HVAC Right Sizing
Program
Subcontractor’s field guide
0
GLOSSARY
 Procedures for HVAC Design and Installation
Pg. 2
 Details for an HVAC system: Materials, Fabrication, Design, and Installation
Pg. 4
 HVAC System Testing Protocols
Pg. 11
 Appendix A, Test-In Checklist
Pg. 26
 Appendix B, Test-Out Checklist
Pg. 28
 Appendix C, CEC Compliance Forms
Pg. 30
 Appendix D, CEC Code Clarification Letters
Pg. 51
1
PROCEDURES FOR HVAC SYSTEM DESIGN AND INSTALLATION
The goal for a HVAC system is to provide proper airflow, heating, and cooling to each room.
This document sets out key criteria that describe a quality system, and key design and installation
considerations that should be met to achieve this goal. The following pages contain more detailed
information on design, fabrication, installation, and performance testing.
Criteria for a Quality HVAC System
An HVAC system should:
1. Be properly sized to provide correct airflow, and meet room-by-room calculated heating and
cooling loads,
2. Be installed so that the static air pressure drop across the handler is within manufacturer and
design specifications,
3. Have sealed supply ductwork that will provide proper airflow,
4. Be installed with a return system sized to provide correct return airflow,
5. Have sealed return ductwork that will provide proper airflow to the fan, and avoid air entering
the HVAC system from polluted zones (e.g., fumes from autos and stored chemicals, and attic
particulates),
6. Have balanced airflows between supplies and return systems to maintain neutral pressure in
the home,
7. Minimize duct air temperature gain or loss between the air handler and room registers, and
between return registers and the air handler,
8. Be properly charged with refrigerant,
9. Have proper CVA, burner operation and proper draft.
Procedures to Design and Install an Air Distribution System
The following steps should be followed in the design and installation of the HVAC system to ensure
efficiency and comfort:
1. Determine room-by-room loads and air-flows using ACCA Manual J calculation procedures (or
substantially equivalent),
2. Layout duct system on floor plan, accounting for the direction of joists, roof hips, firewalls, and
other potential obstructions. Determine register locations and types, duct lengths, and
connections required to produce layout given construction constraints,
3. Size duct system according to ACCA Manual D calculation procedures (or substantially
equivalent),
4. Size HVAC equipment to sensible load using ACCA Manual S procedures (or substantially
equivalent),
5. Install equipment and ducts according to design specifications, using installation requirements
and procedures from the Uniform Mechanical Code, the Air Diffusion Council, SMACNA,
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California Residential Energy Efficiency Standards (Title 24), and manufacturers’
specifications. Using these procedures, the duct system should be substantially air tight,
6. Charge the system appropriately, and verify charge with the evaporator superheat method or
sub-cooling method,
7. Check for proper furnace burner operation and firebox drafting,
8. Test the system to ensure that it performs properly by determining that the system is properly
sized, it does not leak substantially, and has proper air handler fan flow, and proper plenum
static pressures.
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Details for an HVAC System:
Materials, Fabrication, Design and Installation
MINIMUM MATERIALS SPECIFICATIONS
The following are minimum materials specifications recommended to achieve a substantially tight
installation that will last:
All Materials
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Shall have a minimum performance temperature ratings per UL181 (ducts), UL181A (closure
systems for rigid fiberglass ducts), UL181B (closure systems for flexible ducts) and/or UL
181BM (mastic); Butyl-back tape may also be used to seal ducts, ductboard and metal,
Shall have a flame spread rating of no more than 25 and a maximum smoke developed rating
of 50 (ASTM E 84).
Factory-Fabricated Duct Systems
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All factory-fabricated duct systems shall include UL 181 listed ducts with approved closure
systems including collars, connections and splices,
All pressure-sensitive and heat-activated tapes used in the manufacture of rigid fiberglass
ducts shall be UL 181A listed,
All pressure-sensitive tapes and mastics used in the manufacture of flexible ducts shall be UL
181B (tape) or UL 181BM (mastic) listed.
Field-Fabricated Duct Systems
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Ducts:
- Factory-made ducts for field-fabricated duct systems shall be UL 181 listed.
Mastic sealants and mesh:
- Sealants shall be UL 181BM listed, non-toxic, and water resistant,
- Sealants for interior applications shall pass ASTM tests C 731 (extrudability after aging)
and D 2202 (slump test on vertical surfaces),
- Sealants and meshes shall be rated for exterior use,
- Sealants for exterior applications shall pass ASTM tests C 731, C 732 (artificial
weathering test), and D 2202.
Pressure-sensitive tapes:
- Cloth-backed, rubber-adhesive tapes (typical duct tape) shall not be used even if UL
181B rated,
- Tape used for flex-duct shall be UL 181B listed or be aluminum-backed butyl adhesive
tape (15 mil. minimum),
- Tape used for duct board shall be UL 181A listed and so indicated with a UL 181A mark
or aluminum-backed butyl adhesive tape (15 mil. minimum).
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Draw bands:
- Shall be either stainless-steel worm-drive hose clamps or UV-resistant nylon duct ties,
- Shall have a minimum performance temperature rating of 165 degrees Fahrenheit
(continuous, per UL 181A-type test) and a minimum tensile strength rating of 50
pounds,
- Shall be tightened as recommended by the manufacturer with an adjustable tensioning
tool.
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DESIGN, FABRICATION, AND INSTALLATION
The following are design, fabrication, and installation guidelines that, if carefully followed, will provide
a duct installation that is substantially airtight and that will provide proper airflow to each room of the
house:
General Issues
 Ducts, plenums, and fittings should be constructed of galvanized metal, duct board, or flexible
duct. Building cavities may not be used as a duct or plenum without a sealed duct board or metal
liner,
 The air handler box should be airtight,
 Air filters should be easily accessible for replacement, and evaporator coils should be easily
accessible for cleaning,
 Ducts should be configured and supported so as to prevent use of excess material, prevent
dislocation or damage, and prevent constriction of ducts below their rated diameter,
 Flexible duct bends should not be made across sharp corners or have incidental contact with
metal fixtures, pipes, or conduits that can compress or damage the ductwork,
 Flexible ducts should not have bends that exceed 90º unless specified in the design,
 Sheet metal collars and sleeves should be beaded to hold draw-bands.
DESIGN HVAC SYSTEM
Loads and CFM Calculation
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ACCA Manual J Load Calculation or equivalent required,
Calculate heat loss and heat gain for each room,
Total room loads to determine system requirements.
Lay Out Air Distribution System
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Lay out duct system on floor plan and determine register positions and duct paths to optimize
room air circulation and minimize actual duct length as well as equivalent lengths of fittings,
bends, etc.,
Duct paths must account for locations and directions of joists, roof hips, firewalls, and other
potential obstructions,
Duct paths must be planned to avoid sharp turns of flexduct that will kink the duct.
Size Air Distribution System
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ACCA Manual D Duct Design or equivalent required,
Calculate correct cfm for each room and total for building for both supply and return,
Size ducts according to Manual J loads, Manual D airflows, and final layout on plans,
Choose registers to optimize air distribution and duct static pressure,
Size and locate returns to optimize airflow per ACCA methods,
For return-filter grills, calculate minimum return filter area per ACCA methods.
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Select System
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ACCA Manual S Residential Equipment Selection or equivalent required. ACCA, 1515 16th
St., NW, Washington, DC 20036,
From Manual J loads and Manual D cfm, determine appropriate equipment
Equipment should be sized to sensible loads,
Equipment sensible capacity should not be more than 15% larger than the total sensible
design load (as specified in Manual S).
FABRICATE AND INSTALL AN AIRTIGHT DUCT SYSTEM
All Duct Types
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All joints and seams of duct systems and their components should be sealed with mastic,
mastic and embedded mesh, aluminum-backed butyl adhesive tape (15 mil. minimum), or
pressure-sensitive tape approved for use by the duct manufacturer and meeting UL181
specifications, excluding cloth-backed rubber-adhesive tapes (“approved tape”); cloth-backed
rubber-adhesive tapes shall not be used to attach or seal ducts,
Junctions of collars to distribution boxes and plenums should be sealed with mastic,
All sealants should be used in strict accordance with manufacturer’s installation instructions
and within sealants moisture and temperature limitations,
All tapes used as part of duct system installation should be applied to clean, dry surfaces and
sealed with manufacturer’s recommended amount of pressure or heat. If oil is present, taped
surfaces should be prepared with a cleaner / degreaser prior to application,
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Flexible Ducts
 Flexible ducts should be joined by a metal sleeve, collar, coupling, or coupling system. At
least 2 inches of the beaded sleeve, collar, or coupling must extend into the inner core while
allowing a 1-inch attachment area on the sleeve, collar, or coupling for the application of tape,
 The inner core should be mechanically fastened to all fittings, preferably using draw-bands
installed directly over the inner core and beaded fitting. If beaded sleeves and collars are not
used, then the inner core should be fastened to the fitting using #8 screws equally spaced
around the diameter of the duct, and installed to capture the wire coil of the inner liner (3
screws for ducts up to 12” diameter, and 5 screws for ducts over 12” diameter),
 The inner core should be sealed to the fitting with mastic or approved tape,
 Tape used for sealing the inner core should be applied with at least 1 inch of tape on the duct
lining, 1 inch of tape on the fitting of flange, and wrapped at least three times,
 The outer sleeve (vapor barrier) should be sealed at connections with a drawband and/or three
wraps of approved tape,
 The vapor barrier should be complete. All holes, rips, and seams must be sealed with mastic
or approved tape.
Metal Ducts and Plenums
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Metal-to-metal connections should be cleaned and sealed in accordance with manufacturer’s
specifications,
Openings greater than 1/16 inch should be sealed with mastic and mesh, or butyl adhesive
tape,
Openings less than 1/16 inch should be sealed with mastic or UL-181A listed tape,
Special attention should be paid to collar connections to duct-board and/or sheet metal; seal
around the connection with mastic,
Connections between collars and distribution boxes should be sealed with mastic,
At least three equally spaced #8 screws should be used to mechanically fasten round ducts (3
screws for ducts up to 12” diameter, and 5 screws for ducts over 12” diameter),
Crimp joints should have a contact lap of at least 1½ inches,
Square or rectangular ducts should be mechanically fastened with at least one screw per side
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Duct Board
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Duct board connections should be sealed with adhesive, mastic, or UL 181A listed pressuresensitive or heat-activated tape in accordance with manufacturer’s specifications.
Duct Support
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Supports should be installed per manufacturer’s specifications or per UMC requirements,
Supports for flexible ducts should be spaced at no more than 4-foot intervals,
Flexible ducts should be supported by strapping having a minimum width of 1½ inches at all
contact points with the duct,
Supports should not constrict the inner liner of the duct,
Flexible ducts should have maximum of ½ inch sag per foot between supports,
Flexible ducts may rest on ceiling joists or truss supports as long as they lie flat and are
supported at no more than 4-foot intervals.
Boots
 After mechanically attaching the register boot to floor, wall, or ceiling, all openings between the
boot and floor, wall, or ceiling should be sealed with caulk, mastic, or butyl-adhesive tape,
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Air Handler
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Openings greater than 1/16 inch should be sealed with mastic and mesh, or butyl adhesive
tape,
Openings less than 1/16 inch should be sealed with mastic or UL 181A listed tape,
Unsealed access doors should be sealed with UL 181A listed tape.
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HVAC SYSTEM TESTING PROTOCOLS
The following are testing requirements and procedures that must be followed to ensure that
the HVAC system has been properly installed. The tests are designed to determine whether:
1. Ducts, plenum, and air handler are tight;
a. A rough system, including both supply and return but without the air handler, should not
leak more than 4% of nominal fan flow (cfm leakage measured with HVAC system
pressurized to 25 Pa),
b. For finished installation, including supply and return ducts, the air handler, condeser and
finished registers, measured leakage must be less than 6% of nominal fan flow (cfm
leakage measured with HVAC system pressurized to 25 Pa), or less than 15% of
nominal fan flow for equipment change-outs only,
c. Duct leakage can be determined using a pressurization or depressurization technique;
for details, see ASHRAE Standard 152P, California Energy Commission ACM Manual
Appendix F, Minneapolis Duct Blaster™ manual, or other commercially available duct
pressurization or depressurization devices,
d. Duct leakage to outside space can be determined with the house pressurization or LBL
simplified technique.
2. Cooling Coil Airflow is as designed;
a. Airflow must be greater than 350 cfm/ton,
3. Fan Watt Draw requirements are met;
a. Fan Watt Draw must be equal to or better than .58w per cfm
4. Refrigerant Charge is adequate;
a. For systems with fixed metering devices use evaporator superheat method:
i. Cooling coil airflow must be greater than 350 cfm/ton,
ii. Refrigerant system evacuation must be complete;
iii. In hot, dry climates be cautious to be within range of superheat charging chart or
use an approved method.
b. For systems with thermostatic expansion valves use the sub-cooling method.
PROCEDURES
1. Duct Testing (using 1 of the 3 following methods)
a. Total Duct Leakage (brand new systems and change-outs), CF6R- MECH-20-HERS or
CF6R-MECH-21-HERS
i. The objective of this procedure is for an installer to determine or a rater to verify the
total leakage of a new or altered duct system. The total duct leakage shall be
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determined by pressurizing the entire duct system to plus 25 Pa with respect to
outside. The following procedure shall be used for the fan pressurization tests:
1. Verify that the air handler, supply and return plenums and all the connectors,
transition pieces, duct boots and registers are installed. The entire duct
system shall be included in the total leakage test,
2. For newly installed or altered ducts, verify that cloth backed rubber adhesive
duct tape has not been used and if a platform or other building cavity used to
house the air distribution system has been newly installed or altered, it
contains a duct or is ducted with duct board or sheet metal,
3. Seal all the supply and return registers except for one return register or the
system fan access,
4. Attach the duct blaster to the duct system at the return,
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5. Install a static pressure probe at a supply register,
6. Pressurize the ducts with the duct blaster to produce a +25 Pa pressure in the
duct system,
7. Record the flow from the manometer; this is the leakage flow at +25 Pa,
8. Divide the leakage flow by the total fan flow determined by the cooling
method (400cfm X ton) or the heating method (21.7x BTU output in
thousands) to find a percentage,
9. If the leakage flows percentage is less than 15% for change-outs or 6% for
whole new systems, it passes
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b. Duct Leakage to Outside (change-out only), CF6R-MECH-21-HERS
i. The objective of this test is to determine the duct leakage to outside. This
measurement is used to verify that duct systems are entirely located within
conditioned space. The procedure is also used to provide an alternate leakage
measurement where it is likely that some of the total duct leakage is to within the
conditioned space. The duct leakage to outside shall be determined by pressurizing
the ducts and the conditioned space of the house to 25 Pa with respect to outside.
The following procedure shall be used for the fan pressurization test of leakage to
outside:
1. Seal all the supply and return registers except one return register or the fan
access door,
2. Attach the duct blaster to the duct system at the unsealed register or access
door,
3. Install a static pressure probe at a supply register,
4. Attach a blower door to an external doorway,
5. If any ducts are located in an unconditioned basement, all doors or accesses
between the conditioned space and the basement shall be closed, and at
least one operable door or window (if it exists) between the basement and
outside shall be open during the test,
6. If the ducts are located in a conditioned basement, any door between the
basement and the remaining conditioned space shall be open, and any
basement doors or windows to outside must be closed during the test.
7. Adjust the blower door fan to provide +25 Pa pressure in the conditioned
space with respect to outside,
8. Adjust the duct blaster to maintain zero pressure (plus or minus 0.5Pa)
between the ducts and the conditioned space, and adjust the blower door fan
to maintain +25 Pa pressure in the conditioned space with respect to outside.
This step may require several iterations,
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9. Record the flow from the Duct blast Manometer (this is the duct leakage at
+25 Pa. To verify ducts in conditioned space compare this flow to the
criterion,
10. Where the criterion is a percentage of total flow, divide the leakage flow by
the total fan flow determined by by the cooling method (400cfm X ton) or the
heating method (21.7x BTU output in thousands) to find a percentage.
11. If the leakage flow percentage is less than 10%, the system passes.
c. Leakage Reduction Test (change-out only), CF6R-MECH-21-HERS
i. For altered existing duct systems that do not pass the Total Leakage or Leakage to
Outside tests, the objective of this test is to show that the original leakage is reduced
through duct sealing. The following procedure shall be used:
1. Use the procedure of the total duct leakage test to measure the leakage
before commencing duct sealing,
2. After sealing is complete use the same procedure to measure the leakage
after duct sealing,
3. Subtract the sealed leakage from the original leakage and divide the
remainder by the original leakage. If the leakage reduction is 60 percent or
greater of the original leakage, the system passes.
2. Cooling Coil Airflow (using 1 the 3 following methods), CF6R-MECH-22-HERS
a. Cooling Coil Airflow with a flow hood
i. The fan flow measurement shall be performed using the following procedures:
1. All registers shall be fully open, and the air filter shall be installed,
2. Turn on the system fan at the cooling speed and measure the fan flow at the
return grille(s) with a calibrated flow capture hood to determine the total
system return fan,
3. The system fan flow (cfm) shall be the sum of the measured return flows.
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b. Cooling Coil Airflow with Plenum Pressure Matching Method
i. The fan flow measurement shall be performed using the following procedures:
1. If the duct blaster is to be connected to the air handler outside the conditioned
space, then the door or access panel between the conditioned space and the
air handler location shall be opened,
2. With the system fan on at the maximum speed used in the installation (the
cooling speed when air conditioning is present), measure the pressure
difference (in Pa) between the supply plenum and the conditioned space
(Psp). Psp is the target pressure to be maintained during the fan flow tests,
3. Place the pressure probe in the Supply Pressure Measurement Location
described below:
4. Adjust the probe to achieve the highest pressure and then firmly attach the
probe to ensure that it does not move during the fan flow test,
5. If the duct blaster is to be connected to the air handler at the access, block
the return duct system from the plenum upstream of the air handler fan and
the duct blaster. Filters are often located in an ideal location for this blockage,
6. Attach the duct blaster to the duct system at the air handler or alternatively at
the inlet to the return from the conditioned space with the grille and filter
removed,
7. Turn on the system fan and the duct blaster, and adjust the pressure until the
pressure between supply plenum and conditioned space matches Psp,
8. Record the flow through the duct blaster’s monometer (cfm) - this is the
diagnostic fan flow. In some systems, system fan and duct blaster
combinations may not be able to produce enough flow to reach Psp. In this
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case record the maximum flow (Qmax) and pressure (Pmax) between the
supply plenum and the conditioned space. The following equation shall be
used to correct measured system flow and pressure (Qmax and Pmax) to
operating condition at operating pressure (Psp).
Air Handler Flow Qah = Qmax x (Psp/Pmax) ^0.5
c. Cooling Coil Airflow with the Flow Grid Measurement:
i. The fan flow measurement shall be performed using the following procedures:
1. With the system fan on at the maximum speed used in the installation (the
cooling speed when air conditioning is present), measure the pressure
difference (in Pascal) between the supply plenum and the conditioned space
(Psp),
2. Place the pressure probe in the Supply Pressure Measurement Location
described in the previous section,
3. Adjust the probe to achieve the highest pressure and then firmly attach the
probe to ensure that it does not move during the fan flow test,
4. The flow grid shall be attached at a point where all the fan air flows through
the flow grid,
5. Re-measure the system operating pressure with the flow grid in place.
6. Measure the airflow through the flow grid (Qgrid) and the test pressure
(Ptest),
7. The following equation for air handler flow shall be used to correct flow
through the flow grid and pressure (Qgrid and Ptest) to operating condition at
operating pressure (Psp).
Qah = Qmax x (Psp/Ptest) ^0.5
3. Fan Watt Draw (Using 1 of the 2 following methods), CF6R-MECH-22-HERS
a. Fan Watt Draw using a portable watt meter
i. The air handler watt draw measurement shall be performed using the following
procedures:
1. All registers shall be fully open, and the air filter shall be installed,
2. Turn on the system fan at the maximum speed used in the installation
(usually the cooling speed when air conditioning is present,)
3. Measure the fan watt draw (Wfan).
b. Fan Watt Draw using the Utility Revenue Meter
i. The air handler watt draw measurement shall be performed using the following
procedures:
1. All registers shall be fully open, and the air filter shall be installed,
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2. Turn on the system fan at the maximum speed used in the installation
(usually the cooling speed when air conditioning is present) and turn off every
circuit breaker except the one exclusively serving the air handler,
3. Record the Kh factor on the revenue meter, count the number of full
revolutions of the meter wheel over a period exceeding 90 seconds,
4. Record the number of revolutions (Nrev) and time period (trev, seconds).
5. Compute the air handler watt draw (Wfan) using the following formula:
Air Handler Fan Watt Draw Wfan = (Kh x Nrev x 3600) / trev
6. Return all circuit breakers to their original positions.
4. Refrigerant Charge (using 1 of the 2 following methods)
a. Standard Procedure, CF6R-MECH-25-HERS
i. Under this procedure, required refrigerant charge is calculated using the Superheat
Charging Method for Fixed Metering Devices and the Subcooling Charging Method
for Thermostatic Expansion Valves (TXV) and Electronic Expansion Valves (EXV).
The method also checks airflow across the evaporator coil to determine whether the
charge test is valid using the Temperature Split Method,
ii. The standard procedure detailed in this section shall be completed when the outdoor
temperature is 55°F or higher after the HVAC installer has installed and charged the
system in accordance with the manufacturer’s specifications. If the outdoor
temperature is between 55°F and 65°F the return dry bulb temperature shall be
maintained above 70°F during the test. All HERS rater verifications are required to
use this standard procedure,
iii. Measurements require four (4) temperature sensors with a response time that
produces the accuracy specified within 15 seconds of immersion in a bath at least
40º F different from the surrounding conditions,
iv. Measurements require one (1) cotton wick for measuring wet-bulb temperatures,
v. Measurements require at two (2) pipe temperature sensors that produce the
accuracy within 15 seconds of being applied to a pipe at least 40º F different from
the surrounding conditions,
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vi. There shall be two labeled temperature measurement access holes, one in the
supply plenum and one in the return plenum. The temperature measurements shall
be taken at the following locations:
vii. The standard charge measurement shall be performed using the following
procedure:
1. If the condenser air entering temperature is less than 65ºF, establish a return
air dry bulb temperature sufficiently high that the return air dry bulb
temperature will be not less than 70ºF prior to the measurements at the end
of the 15-minute period in step 2,
2. Connect the refrigerant gauges to the service ports, taking normal
precautions to not introduce air into the system,
3. Turn the cooling system on and let it run for 15 minutes to stabilize
temperatures and pressures before taking any measurements. While the
system is stabilizing, proceed with setting up the temperature sensors,
4. Attach one pipe temperature sensor to the suction line near the suction line
service valve and attach one pipe temperature sensor to the liquid line near
the liquid line service valve,
5. Attach a temperature sensor to measure the condenser entering air dry-bulb
temperature. The sensor shall be placed so that it records the average
condenser air entering temperature and is shaded from direct sun,
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6. Be sure that all cabinet panels that affect airflow are in place before making
measurements. The temperature sensors shall remain attached to the system
until the final charge is determined,
7. Place wet-bulb temperature sensor (cotton wick) in water to ensure it is
saturated when needed. Do not get the dry-bulb temperature sensors wet,
8. Insert the dry-bulb temperature sensor in the supply plenum at the "Title 24 –
Supply Temperature Access" detailed in the previous diagram in this section,
9. At 12 minutes, insert a dry-bulb temperature sensor and a wet-bulb
temperature sensor into the return plenum at the "Title 24 – Return
Temperature Access" detailed the previous diagram in this section,
10. At 15 minutes when the return plenum wet-bulb temperature has stabilized,
using the temperature sensors already in place, measure and record the
return (evaporator entering) air dry-bulb temperature (Treturn, db) and the
return (evaporator entering) air wet-bulb temperature (Treturn, wb),
11. Using the dry-bulb temperature sensor already in place, measure and record
the supply (evaporator leaving) air drybulb temperature (Tsupply, db),
12. Using the refrigerant gauge or saturation temperature measurement sensor
already attached, measure and record the evaporator saturation temperature
(Tevaporator, sat) from the low side gauge,
13. Using the refrigerant gauge or saturation temperature measurement sensor
already attached, measure and record the condenser saturation temperature
(Tcondenser, sat) from the high side gauge,
14. Using the pipe temperature sensor already in place, measure and record the
suction line temperature (Tsuction),
15. Using the pipe temperature sensor already in place, measure and record the
liquid line temperature (Tliquid),
16. Using the dry-bulb temperature sensor already in place, measure and record
the condenser (entering) air dry-bulb temperature (Tcondenser, db).
viii. The following steps describe the calculations to determine if the system meets the
required refrigerant charge and metering device function using the measurements
described in the section above:
1. Fixed Metering Device Calculations; The Superheat Charging Method is
used only for systems equipped with fixed metering devices. These include
capillary tubes and piston-type metering devices:
a. Calculate Actual Superheat as the suction line temperature minus the
evaporator saturation temperature.
Actual Superheat = Tsuction, – Tevaporator, sat.
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b. Determine the Target Superheat using the tables below using the
return air wet-bulb temperature (Treturn, wb) and condenser air drybulb temperature (Tcondenser, db).
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c. If a dash mark is read from the table above, the target superheat is
less than 5°F. Note that a valid refrigerant charge verification test
cannot be performed under these conditions. The usual reason for a
target superheat determination of less than 5°F is that outdoor
conditions are too hot and dry. One of the following is needed so a
target superheat value can be obtained from the referenced tables:
i. turn on the space heating system and/or open the windows to
warm up indoor temperature, OR
ii. retest at another time when conditions are different,
d. Repeat the measurement procedure as necessary to establish the
target superheat. Allow system to stabilize for 15 minutes before the
final measurements are taken,
e. Calculate the difference between actual superheat and target
superheat (Actual Superheat – Target Superheat). In order to allow for
inevitable differences in measurements, the Pass/Fail criteria are
different for the Installer and the HERS Rater,
f. For the Installer, if the difference is between minus 5°F and plus 5°F,
then the system passes the required refrigerant charge criterion,
g. For the HERS Rater inspecting the system, if the difference is
between minus 6°F and plus 6°F, then the system passes the required
refrigerant charge criterion,
h. For the Installer, if the difference is greater than plus 5°F, then the
system does not pass the required refrigerant charge criterion and the
Installer shall add refrigerant. Adjust refrigerant charge and check the
measurements as many times as necessary to pass the test. After the
final adjustment has been made, allow the system to run 15 minutes
before completing the final measurement procedure,
i. For the Installer, if the difference is between minus 5°F and
minus100°F, then the system does not pass the required refrigerant
charge criterion, the Installer shall remove refrigerant. Adjust
refrigerant charge and check the measurements as many times as
necessary to pass the test. After the final adjustment has been made,
allow the system to run 15 minutes before completing the final
measurement procedure.
2. Variable Metering Device Calculations; The Sub-cooling Charging Method
is used only for systems equipped with variable metering devices. These
include Thermostatic Expansion Valves (TXV) and Electronic Expansion
Valves (EXV). Since variable metering devices are constant superheat
valves, measuring the superheat determines whether they are working
properly.
23
a. Calculate Actual Sub-cooling as the condenser saturation temperature
minus the liquid line temperature,
Actual Subcooling = Tcondenser, sat – Tliquid.
b. Determine the Target Sub-cooling specified by the manufacturer.
c. Calculate the difference between actual sub-cooling and target subcooling,
Actual Sub-cooling – Target Sub-cooling
d. In order to allow for inevitable differences in measurements, the
Pass/Fail criteria are different for the Installer and the HERS Rater,
e. For the Installer, If the difference is between minus 3°F and plus 3°F,
then the system passes the required refrigerant charge criterion,
f. For the HERS Rater inspecting the system, if the difference is
between minus 4°F and plus 4°F, then the system passes the required
refrigerant charge criterion,
g. For the Installer, if the difference is greater than plus 3°F, then the
system does not pass the required refrigerant charge criterion and the
Installer shall remove refrigerant. Adjust refrigerant charge and check
the measurements as many times as necessary to pass the test. After
the final adjustment has been made, allow the system to run 15
minutes before completing the final measurement procedure,
h. For the Installer, if the difference is between minus 3°F and minus
100°F, then the system does not pass the required refrigerant charge
criterion, the Installer shall add refrigerant. Adjust refrigerant charge
and check the measurements as many times as necessary to pass the
test. After the final adjustment has been made, allow the system to run
15 minutes before completing the final measurement procedure,
i. Calculate Actual Superheat as the suction line temperature minus the
evaporator saturation temperature,
Actual Superheat = Tsuction, – Tevaporator, sat.
j.
If possible, determine the Superheat Range specified by the
manufacturer,
k. In order to allow for inevitable differences in measurements, the
Pass/Fail criteria are different for the Installer and the HERS Rater,
l. For the Installer, if the superheat is within the manufacturer’s
superheat range, then the system passes the metering device criterion.
If the manufacturer’s specification is not available and the superheat is
24
between 4°F and 25°F, then the system passes the metering device
criterion.
m. For the HERS Rater inspecting the system, if the superheat is
between 3°F and 26°F, then the system passes the metering device
criterion.
3. Minimum Airflow
a. For the refrigerant test to be valid, a minimum airflow of 300cfm/ton
has to be present,
b. This value can be measured using any of the Cooling Coil Airflow
testing methods described in previous sections.
b. Weigh-in procedure, CF6R-MECH-23-HERS
i. Under this procedure, the required refrigerant charge is calculated using the WeighIn Charging Method,
ii. There shall be two labeled temperature measurement access holes, one in the
supply plenum and one in the return plenum, as described in the diagram present in
the Standard Measurement procedure section.
iii. HVAC installers who must complete system installation verification when the outdoor
temperature is below 55°F shall use this alternate procedure in conjunction with
installing and charging the system in accordance with the manufacturer’s
specifications,
iv. HERS Raters shall not use this procedure to verify compliance,
v. Split system air conditioners come from the factory already charged with the
standard charge indicated on the nameplate,
vi. The manufacturer supplies the charge proper for the application based on their
standard liquid line length,
vii. It is the responsibility of the HVAC installer to ensure that the charge is correct for
each air conditioner and to adjust the charge based on liquid line lengths different
from the manufacturer's standard.
25
APPENDIX A
Test-In Checklist
26
TEST IN CHECKLIST
DUCT LAYOUT
□
□
□
□
□
□
No sharp bends
No collapsed ducts
Insulation present, R-Value:_________
No un-ducted chases
Sealed joints
Support straps every 4 feet of duct or less
FURNACE
□ Sealed penetrations
 Refrigerant lines
 Condensation lines
 Blower access door
□ Sealed seams
□ Sealed joints
COIL
□ Sealed seams
□ Sealed penetrations
 Refrigerant lines
 Condensation lines
□ Sealed joints
PLENUMS
□ Dampers present
□ Sealed joints
□ Sealed seams
SUPPLY/ RETURN CANS
□ Sealed flange
□ Sealed to drywall
DIAGNOSTIC TESTING
□ Duct leakage
Ton/ BTUs:______
□ Cooling Coil Airflow
CFM:______
CFM25:______
%Leakage:______
COMPLIANCE DOCUMENTATION
□ CF1R-ALT-HVAC (Climate Zone 10-15)
□ Confirm Home Owner submittal of Residential HVAC Rebate Reservation
□ Confirm Home Owner submittal of Residential HVAC Rebate Application
27
APPENDIX B
Test-Out Checklist
28
TEST OUT CHECKLIST
DUCT LAYOUT
□
□
□
□
□
□
No sharp bends
No collapsed ducts
Insulation present; R-Value:_______
No un-ducted chases
Sealed joints
Support straps every 4 feet of duct or less
□
Sealed penetrations
 Refrigerant lines
 Condensation lines
 Blower access door
Sealed seams
Sealed joints
FURNACE
□
□
COIL
□
Sealed seams
Sealed penetrations
 Refrigerant lines
 Condensation lines
Sealed joints
□
□
□
Dampers present
Sealed joints
Sealed seams
□
□
PLENUMS
SUPPLY/ RETURN CANS
□
□
Sealed flange
Sealed to drywall
DIAGNOSTIC TESTING
□
Duct Leakage
□
Cooling Coil Airflow
□
□
Refrigerant Charge
Fan Watt Draw
Ton/BTUs:______
CFM25:______
%Leakage:______
%Leakage Reduction: Test in% - Test Out% = ________
CFM:______
Airflow increase: Test Out CFM - Test In CFM = _______
COMPLIANCE DOCUMENTATION
□
□
□
□
CF6R-MECH-04 (Equipment Installed)
CF6R-MECH-20-HERS OR CF6R-MECH-21-HERS (For the Duct Leakage)
CF6R-MECH-22-HERS (For Cooling Coil Airflow and Fan Watt Draw) SPLIT SYSTEMS ONLY
CF6R-MECH-25 OR 26-HERS (For Refrigerant Charge) SPLIT SYSTEMS ONLY
29
APPENDIX C
CEC Compliance Forms
30
(ENFORCEMENT AGENCY
CAN CUSTOMIZE WITH LETTERHEAD/SEAL)
2008 Building Energy Efficiency Standards Residential HVAC Alterations Climate
Zones 10 to 15
BUSINESS AND PROFESSIONS CODE, SECTION 7110
Willful or deliberate disregard and violation of the building laws, including the California Building Code, and local permit
requirements constitutes a cause for disciplinary action from the Contractors State License Board working in conjunction with
the local building department. This action may consist of fines up to $5,000 per violation or suspension/revocation of a
contractor’s license.
WHEN IS A PERMIT REQUIRED?
A written construction permit shall be obtained from the enforcement agency prior to the erection, construction, reconstruction,
installation, relocation, or alteration of any mechanical system, except as permitted in Appendix Chapter 1, Section 112.2 of the 2007
California Mechanical Code. Projects requiring permits include, but are not limited to:
• New HVAC installation
• Relocation of an existing HVAC unit
• HVAC Changeout
• Adding or replacing more than 40ft ducting
• Replacement of furnace, coil, FAU, or condenser
in unconditioned space
2008 BUILDING ENERGY EFFICIENCY STANDARDS (Title 24, Part 6) REQUIREMENTS INCLUDE:
1. Heating equipment must have a minimum 78% AFUE (Exception: Wall & floor furnaces; room heaters).
2. Central air conditioners & heat pumps less than 65,000 Btu/hr must have a minimum 13 SEER.
3. Newly installed or replaced ducts must have a minimum insulation value of R-4.2. When more than 40 ft of ducting will
be installed or replaced, the duct insulation value must be R-6 (CZ 10-13), or R-8 (CZ 14 and 15).
4. A setback type thermostat (24 hr clock with four set points) is required for all alterations.
5. New or replacement ducts must meet the mandatory requirements of Section 150(m):
• All joints and openings in the in the HVAC system must be sealed.
• Only UL 181, UL 181A, or UL 181B approved tapes or mastic shall be used to seal duct openings.
• Connections of metals ducts and the inner core of flex ducts shall be mechanically fastened. Flex ducts must be
connected using a metal sleeve/coupling.
• Flex ducts that are suspended must be supported every 4ft. max for horizontal runs with no more than 2” of sag
between supports and 6 ft. max for vertical runs.
WHEN IS HERS VERIFICATION REQUIRED AND WHAT FORMS ARE REQUIRED?
HERS verification is required for all HVAC alterations in Climate Zone 10-15. A HERS rater is a special inspector for the building
department. The building inspector may also request to be on site to witness testing by the contractor and/or HERS rater. The installer
picks one of the four options on the CF-1R-ALT-HVAC Form that describe the work being conducted. Each option lists the forms
required to be at the job site for final inspection.
• CF-6R Forms shall be completed and submitted by the installing contractor for final inspection.*
• CF-4R Forms shall be completed, registered with an approved HERS Provider (cannot be completed by hand), and submitted
by the HERS Rater for final inspection effective January 1, 2010.
DESCRIPTION OF HERS TESTS BELOW (Full descriptions found in Residential Appendix RA3 and Residential Manual)
Duct sealing – The installer is to insure leakage of the HVAC system is less than 6% for new air conditioning system (new equipment
and all new ducts) or 15%, 60% reduction, seal all accessible leaks, etc. for alterations to existing HVAC systems. When the contractor
uses the option to seal all accessible leaks, all easily movable objects must be moved to seal existing ducting. New ducting installed by
the contractor is not allowed to have any leaks even if it is no longer accessible. In example 3 of the CF-1R “all new ducts” means that
all the ducting was changed. The original boots, plenums, etc. do not need to be changed.
Cooling Coil Airflow (CCA) – There are two different minimum air flow requirements that must be met. These are 300 CFM and 350
CFM. The minimum 300 CFM per ton of cooling is required in order to conduct a refrigerant charge test. For new HVAC systems
(new equipment and new ducts) the HVAC system must move a minimum 350 CFM of air for each ton of cooling.
Refrigerant Charge (RC) – The installer is required to verify the charge is correct. If the outside temperature is below 55 degrees
then the weigh in method must be used by the installer. When the weigh in method is used the HERS rater must retest when the
temperature is 55 and above. A charge indicator display (CID) can be used in place of conducting an RC, manufacturers are currently
developing this device.
Temperature Measurement Access Holes (TMAH) – Installer must drill and mark holes to measure temperature split.
Hole for the placement of a Static Pressure Probe (HSPP) or Permanently installed Static Pressure Probe (PSPP) – Either the
installer must drill and mark holes to measure static pressure or a permanently installed pressure probe must be installed and marked.
Saturation Temperature Measurement Sensors (STMS) – Permanently installed type K thermocouple are installed on the indoor
and outdoor coil so that the HERS rater can verify charge without attaching gauges. Instructions are found in Ch 4 of the Res. Manual.
Fan Watt Draw (FWD) – Installer verifies that the furnace fan watt draw is less than 0.58 Watts/CFM.
NOTE: The CF-6R-MECH-04 is required for all HVAC alterations.
* For Final inspection ALL compliance forms (CF-1Rs, CF-6Rs, and CF-4Rs) shall be registered with an approved HERS
Provider for building permit applications submitted on or after October 1, 2010.
Simplified Prescriptive Certificate of Compliance: 2008 Residential HVAC Alterations
CF-1R-ALT-HVAC
Climate Zones 10 to 15
Site Address:
Enforcement Agency:
Date:
Permit #:
Conditioned Floor
Equipment Type1
List Minimum Efficiency2
Duct insulation requirement
Area
Thermostat
† Packaged Unit
Over 40 ft of ducts added or
† Setback
† Furnace
† AFUE____
† COP______
replaced in unconditioned space Served by system
(If not already
† Indoor Coil
†SEER_____
† HSPF ____
present, must be
† R 6 (CZ 10-13)
________ sf
† Condensing Unit
† EER _____
† Resistance
installed)
† R 8 (CZ 14-15)
† Other ________
1. Equipment Type: Choose the equipment being installed; if more than one system, use another CF-1R-ALT-HVAC for each system.
2. Minimum Equipment Efficiencies: 13 SEER, 78% AFUE, 7.7HSPF for typical residential systems.
HERS VERIFICATION SUMMARY Listed below are four HVAC alteration Options. The installer decides what work is being done and
picks one of the appropriate Options. Each Option lists the HERS measures that must be conducted. A copy of the forms shall be left on site for final
inspection and a copy given to the homeowner. At final, the inspector verifies that the work listed on this form was in fact the work completed by the
installer. The inspector also verifies that each appropriate CF-6R and registered CF-4R forms (no hand filled CF-4Rs allowed) are filled out and
signed. Beginning October 1, 2010, a registered copy of the CF-1R and CF-6R shall also be on site for final inspection.
† 1. HVAC Changeout
• All HVAC Equipment replaced
Required Forms:
CF-6R forms: MECH-04, MECH-21-HERS and (for split systems) MECH-25-HERS
CF-4R forms: MECH-21 and (for split systems) MECH-25
• Condenser Coil and /or
CF-6R forms: MECH-21-HERS and (for split systems) MECH-25-HERS
• Indoor Coil and /or
CF-4R forms: MECH-21 and (for split systems) MECH-25
• Furnace
For Split Systems: Duct leakage < 15 percent; RC, CCA ≥ 300 CFM/ton(Minimum Air Flow Requirement), TMAH
For Packaged Units: Duct leakage < 15 percent
Exempted from duct leakage testing if:
† 1. Duct system was documented to have been previously sealed and confirmed through HERS verification, or
† 2. Duct systems with less than 40 linear feet in unconditioned space, or
† 3. Existing duct systems are constructed, insulated or sealed with asbestos
† 2. New HVAC System
• Cut in or Changeout with new
ducts: (all new ducting and all
new equipment)
Required Forms:
CF-6R forms: MECH-04, MECH-20-HERS,and (for split systems) MECH-22-HERS, and MECH-25-HERS
CF-4R forms: MECH-20, and (for split systems) MECH-22, and MECH-25
For Split Systems: Duct leakage < 6 percent; RC, CCA ≥ 350 CFM/ton, FWD, TMAH, STMS, and either HSPP or PSPP.
For Packaged Units: Duct leakage < 6 percent
† 3. New Ducts with Replacement
Required Forms:
CF-6R forms: MECH-04, MECH-20-HERS,and (for split systems) MECH-25-HERS
• Includes replacing or installing all new ducting
and/or outdoor condensing unit and/or indoor
coil and/or furnace. Not all equipment changed.
CF-4R forms: MECH-20 and (for split systems) MECH-25
For Split Systems: Duct leakage < 6 percent, RC, CCA ≥ 300 CFM/ton, TMAH
For Packaged Units: Duct leakage < 6 percent
† 4. New Ducting over 40 feet
Required Forms:
• Includes adding or replacing more than 40
CF-6R forms: MECH-04, MECH-21-HERS
linear feet of duct in unconditioned space.
CF-4R forms: MECH-21
For split system or packaged units: Duct leakage < 15 percent
† EXCEPTION: Existing duct systems constructed, insulated or sealed with asbestos.
Contractor (Documentation Author's /Responsible Designer's Declaration Statement)
• I certify that this Certificate of Compliance documentation is accurate and complete.
• I am eligible under Division 3 of the California Business and Professions Code to accept responsibility for the design identified on this Certificate of Compliance.
•
•
I certify that the energy features and performance specifications for the design identified on this Certificate of Compliance conform to the requirements of Title 24,
Parts 1 and 6 of the California Code of Regulations.
The design features identified on this Certificate of Compliance are consistent with the information documented on other applicable compliance forms, worksheets,
calculations, plans and specifications submitted to the enforcement agency for approval with the permit application.
Name:
Signature:
Company:
Date:
Address:
License:
City/State/Zip:
Phone:
2008 Residential Compliance Forms
July 2010
Mandatory Measures Summary
MF-1R
Residential
Site Address:
(Page 1 of 3)
Enforcement Agency:
Date:
NOTE: Low-rise residential buildings subject to the Standards must comply with all applicable mandatory measures listed,
regardless of the compliance approach used. More stringent energy measures listed on the Certificate of Compliance (CF-1R,
CF-1R-ADD, or CF-1R-ALT Form) shall supersede the items marked with an asterisk (*) below. This Mandatory Measures
Summary shall be incorporated into the permit documents and the applicable features shall be considered by all parties as minimum
component performance specifications whether they are shown elsewhere in the documents or in this summary. Submit all
applicable sections of the MF-1R Form with plans.
DESCRIPTION
Building Envelope Measures:
§116(a)1: Doors and windows between conditioned and unconditioned spaces are manufactured to limit air leakage.
§116(a)4: Fenestration products (except field-fabricated windows) have a label listing the certified U-Factor, certified Solar Heat Gain Coefficient
(SHGC), and infiltration that meets the requirements of §10-111(a).
§117: Exterior doors and windows are weather-stripped; all joints and penetrations are caulked and sealed.
§118(a): Insulation specified or installed meets Standards for Insulating Material. Indicate type and include on CF-6R Form.
§118(i): The thermal emittance and solar reflectance values of the cool roofing material meets the requirements of §118(i) when the installation of
a Cool Roof is specified on the CF-1R Form.
*§150(a): Minimum R-19 insulation in wood-frame ceiling or equivalent U-factor.
§150(b): Loose fill insulation shall conform with manufacturer’s installed design labeled R-Value.
*§150(c): Minimum R-13 insulation in wood-frame wall or equivalent U-factor.
*§150(d): Minimum R-13 insulation in raised wood-frame floor or equivalent U-factor.
§150(f): Air retarding wrap is tested, labeled, and installed according to ASTM E1677-95(2000) when specified on the CF-1R Form.
§150(g): Mandatory Vapor barrier installed in Climate Zones 14 or 16.
§150(l): Water absorption rate for slab edge insulation material alone without facings is no greater than 0.3%; water vapor permeance rate is no
greater than 2.0 perm/inch and shall be protected from physical damage and UV light deterioration.
Fireplaces, Decorative Gas Appliances and Gas Log Measures:
§150(e)1A: Masonry or factory-built fireplaces have a closable metal or glass door covering the entire opening of the firebox.
§150(e)1B: Masonry or factory-built fireplaces have a combustion outside air intake, which is at least six square inches in area and is equipped
with a with a readily accessible, operable, and tight-fitting damper and or a combustion-air control device.
§150(e)2: Continuous burning pilot lights and the use of indoor air for cooling a firebox jacket, when that indoor air is vented to the outside of the
building, are prohibited.
Space Conditioning, Water Heating and Plumbing System Measures:
§110-§113: HVAC equipment, water heaters, showerheads, faucets and all other regulated appliances are certified by the Energy Commission.
§113(c)5: Water heating recirculation loops serving multiple dwelling units and High-Rise residential occupancies meet the air release valve,
backflow prevention, pump isolation valve, and recirculation loop connection requirements of §113(c)5.
§115: Continuously burning pilot lights are prohibited for natural gas: fan-type central furnaces, household cooking appliances (appliances with an
electrical supply voltage connection with pilot lights that consume less than 150 Btu/hr are exempt), and pool and spa heaters.
§150(h): Heating and/or cooling loads are calculated in accordance with ASHRAE, SMACNA or ACCA.
§150(i): Heating systems are equipped with thermostats that meet the setback requirements of Section 112(c).
§150(j)1A: Storage gas water heaters rated with an Energy Factor no greater than the federal minimal standard are externally wrapped with
insulation having an installed thermal resistance of R-12 or greater.
§150(j)1B: Unfired storage tanks, such as storage tanks or backup tanks for solar water-heating system, or other indirect hot water tanks have R-12
external insulation or R-16 internal insulation where the internal insulation R-value is indicated on the exterior of the tank.
§150(j)2: First 5 feet of hot and cold water pipes closest to water heater tank, non-recirculating systems, and entire length of recirculating sections
of hot water pipes are insulated per Standards Table 150-B.
§150(j)2: Cooling system piping (suction, chilled water, or brine lines),and piping insulated between heating source and indirect hot water tank
shall be insulated to Table 150-B and Equation 150-A.
§150(j)2: Pipe insulation for steam hydronic heating systems or hot water systems >15 psi, meets the requirements of Standards Table 123-A.
§150(j)3A: Insulation is protected from damage, including that due to sunlight, moisture, equipment maintenance, and wind.
§150(j)3A: Insulation for chilled water piping and refrigerant suction lines includes a vapor retardant or is enclosed entirely in conditioned space.
2008 Residential Compliance Forms
August 2009
Mandatory Measures Summary
MF-1R
Residential
Site Address:
(Page 2 of 3)
Enforcement Agency:
Date:
§150(j)4: Solar water-heating systems and/or collectors are certified by the Solar Rating and Certification Corporation.
Ducts and Fans Measures:
§150(m)1: All air-distribution system ducts and plenums installed, are sealed and insulated to meet the requirements of CMC Sections 601, 602,
603, 604, 605 and Standard 6-5; supply-air and return-air ducts and plenums are insulated to a minimum installed level of R-4.2 or
enclosed entirely in conditioned space. Openings shall be sealed with mastic, tape or other duct-closure system that meets the applicable
requirements of UL 181, UL 181A, or UL 181B or aerosol sealant that meets the requirements of UL 723. If mastic or tape is used to
seal openings greater than 1/4 inch, the combination of mastic and either mesh or tape shall be used
§150(m)1: Building cavities, support platforms for air handlers, and plenums defined or constructed with materials other than sealed sheet metal,
duct board or flexible duct shall not be used for conveying conditioned air. Building cavities and support platforms may contain ducts.
Ducts installed in cavities and support platforms shall not be compressed to cause reductions in the cross-sectional area of the ducts.
§150(m)2D: Joints and seams of duct systems and their components shall not be sealed with cloth back rubber adhesive duct tapes unless such tape
is used in combination with mastic and draw bands.
§150(m)7: Exhaust fan systems have back draft or automatic dampers.
§150(m)8: Gravity ventilating systems serving conditioned space have either automatic or readily accessible, manually operated dampers.
§150(m)9: Insulation shall be protected from damage, including that due to sunlight, moisture, equipment maintenance, and wind. Cellular foam
insulation shall be protected as above or painted with a coating that is water retardant and provides shielding from solar radiation that
can cause degradation of the material.
§150(m)10: Flexible ducts cannot have porous inner cores.
§150(o): All dwelling units shall meet the requirements of ANSI/ASHRAE Standard 62.2-2007 Ventilation and Acceptable Indoor Air Quality in
Low-Rise Residential Buildings. Window operation is not a permissible method of providing the Whole Building Ventilation required in
Section 4 of that Standard.
Pool and Spa Heating Systems and Equipment Measures:
§114(a): Any pool or spa heating system shall be certified to have: a thermal efficiency that complies with the Appliance Efficiency Regulations;
an on-off switch mounted outside of the heater; a permanent weatherproof plate or card with operating instructions; and shall not use
electric resistance heating or a pilot light.
§114(b)1: Any pool or spa heating equipment shall be installed with at least 36” of pipe between filter and heater, or dedicated suction and return
lines, or built-up connections for future solar heating
§114(b)2: Outdoor pools or spas that have a heat pump or gas heater shall have a cover.
§114(b)3: Pools shall have directional inlets that adequately mix the pool water, and a time switch that will allow all pumps to be set or
programmed to run only during off-peak electric demand periods.
§150(p): Residential pool systems or equipment meet the pump sizing, flow rate, piping, filters, and valve requirements of §150(p).
Residential Lighting Measures:
§150(k)1: High efficacy luminaires or LED Light Engine with Integral Heat Sink has an efficacy that is no lower than the efficacies contained in
Table 150-C and is not a low efficacy luminaire as specified by §150(k)2.
§150(k)3: The wattage of permanently installed luminaires shall be determined as specified by §130(d).
§150(k)4: Ballasts for fluorescent lamps rated 13 Watts or greater shall be electronic and shall have an output frequency no less than 20 kHz.
§150(k)5: Permanently installed night lights and night lights integral to a permanently installed luminaire or exhaust fan shall contain only high
efficacy lamps meeting the minimum efficacies contained in Table 150-C and shall not contain a line-voltage socket or line-voltage
lamp holder; OR shall be rated to consume no more than five watts of power as determined by §130(d), and shall not contain a medium
screw-base socket.
§150(k)6: Lighting integral to exhaust fans, in rooms other than kitchens, shall meet the applicable requirements of §150(k).
§150(k)7: All switching devices and controls shall meet the requirements of §150(k)7.
§150(k)8: A minimum of 50 percent of the total rated wattage of permanently installed lighting in kitchens shall be high efficacy.
EXCEPTION: Up to 50 watts for dwelling units less than or equal to 2,500 ft2 or 100 watts for dwelling units larger than 2,500 ft2 may be exempt
from the 50% high efficacy requirement when: all low efficacy luminaires in the kitchen are controlled by a manual on occupant
sensor, dimmer, energy management system (EMCS), or a multi-scene programmable control system; and all permanently installed
luminaries in garages, laundry rooms, closets greater than 70 square feet, and utility rooms are high efficacy and controlled by a
manual-on occupant sensor.
§150(k)9: Permanently installed lighting that is internal to cabinets shall use no more than 20 watts of power per linear foot of illuminated
cabinet.
§150(k)10: Permanently installed luminaires in bathrooms, attached and detached garages, laundry rooms, closets and utility rooms shall be high
efficacy.
2008 Residential Compliance Forms
August 2009
Mandatory Measures Summary
MF-1R
Residential
Site Address:
(Page 3 of 3)
Enforcement Agency:
Date:
EXCEPTION 1: Permanently installed low efficacy luminaires shall be allowed provided that they are controlled by a manual-on
occupant sensor certified to comply with the applicable requirements of §119.
EXCEPTION 2: Permanently installed low efficacy luminaires in closets less than 70 square feet are not required to be controlled by a
manual-on occupant sensor.
§150(k)11: Permanently installed luminaires located in rooms or areas other than in kitchens, bathrooms, garages, laundry rooms, closets, and utility
rooms shall be high efficacy luimnaires.
EXCEPTION 1: Permanently installed low efficacy luminaires shall be allowed provided they are controlled by either a dimmer switch
that complies with the applicable requirements of §119, or by a manual-on occupant sensor that complies with the
applicable requirements of §119.
EXCEPTION 2: Lighting in detached storage building less than 1000 square feet located on a residential site is not required to comply
with §150(k)11.
§150(k)12: Luminaires recessed into insulated ceilings shall be listed for zero clearance insulation contact (IC) by Underwriters Laboratories or
other nationally recognized testing/rating laboratory; and have a label that certifies the lumiunaire is airtight with air leakage less then
2.0 CFM at 75 Pascals when tested in accordance with ASTM E283; and be sealed with a gasket or caulk between the luminaire housing
and ceiling.
§150(k)13: Luminaires providing outdoor lighting, including lighting for private patios in low-rise residential buildings with four or more dwelling
units, entrances, balconies, and porches, which are permanently mounted to a residential building or to other buildings on the same lot
shall be high efficacy.
EXCEPTION 1: Permanently installed outdoor low efficacy luminaires shall be allowed provided that they are controlled by a manual
on/off switch, a motion sensor not having an override or bypass switch that disables the motion sensor, and one of the
following controls: a photocontrol not having an override or bypass switch that disables the photocontrol; OR an
astronomical time clock not having an override or bypass switch that disables the astronomical time clock; OR an
energy management control system (EMCS) not having an override or bypass switch that allows the luminaire to be
always on
EXCEPTION 2: Outdoor luminaires used to comply with Exception1 to §150(k)13 may be controlled by a temporary override switch
which bypasses the motion sensing function provided that the motion sensor is automatically reactivated within six
hours.
EXCEPTION 3: Permanently installed luminaires in or around swimming pool, water features, or other location subject to Article 680 of
the California Electric Code need not be high efficacy luminaires.
§150(k)14: Internally illuminated address signs shall comply with Section 148; OR not contain a screw-base socket, and consume no more than five
watts of power as determined according to §130(d).
§150(k)15: Lighting for parking lots and carports with a total of for 8 or more vehicles per site shall comply with the applicable requirements in
Sections 130, 132, 134, and 147. Lighting for parking garages for 8 or more vehicles shall comply with the applicable requirements of
Sections 130, 131, 134, and 146
§150(k)16: Permanently installed lighting in the enclosed, non-dwelling spaces of low-rise residential buildings with four or more dwelling units
shall be high efficacy luminaires.
EXCEPTION: Permanently installed low efficacy luminaires shall be allowed provided that they are controlled by an occupant sensor(s)
certified to comply with the applicable requirements of §119.
2008 Residential Compliance Forms
August 2009
INSTALLATION CERTIFICATE
Space Conditioning Systems, Ducts and Fans
CF-6R-MECH-04
(Page 1 of 2)
Site Address:
Enforcement Agency:
Permit Number:
Space Conditioning Systems
Heating Equipment
Equip
Type
(packageheat pump)
CEC Certified Mfr. Name
and Model Number
ARI
Reference
Number 2
# of
Identical
Systems
Efficiency
(AFUE,
etc.)1, 3
(≥CF-1R
value)4
Duct
Location
(attic,
crawlspace,
etc.)
Duct
R-value
Heating
Load
(Btu/hr)
Heating
Capacity
(Btu/hr)
Duct
Location
(attic,
crawlspace,
etc.)
Duct
R-value
Cooling
Load
(Btu/hr)
Cooling
Capacity
(Btu/hr)
Cooling Equipment
Equip
Type
(package
heat
pump)
CEC Certified Mfr. Name
and Model Number
ARI Reference
Number 2
# of
Identical
Systems
Efficiency
(SEER
and EER)
1, 3
(≥CF-1R
value) 4
1. If project is new construction, see Footnotes to Standards Table 151-B and Table 151-C for duct ceiling alternative
compliance.
2. ARI Reference Number can be found by entering the equipment model number at http://www.aridirectory.org/ari/ac.php#
3. Listed efficiency on this page must be greater than or equal ( ≥ ) to the value shown on the CF-1R form.
4. When CF-1R is reference it is also applicable to the CF-1R, CF-1R-AA or CF-1R-ALT
ALL BOXES MUST BE CHECKED TO BE A VALID FORM
† §110-§113: HVAC equipment is certified by the California Energy Commission.
† §150(h): Heating and/or cooling loads calculated in accordance with ASHRAE, SMACNA, or ACCA.
† §150(i): Setback Thermostat on all applicable heating and/or cooling systems meet the requirements of §112(c).
† §150(j)2: Pipe insulation for cooling system refrigerant suction, chilled water and brine lines meets minimum
requirements of Table 150-B and includes a vapor retardant or is enclosed entirely in conditioned space.
2008 Residential Compliance Forms
August 2009
INSTALLATION CERTIFICATE
Space Conditioning Systems, Ducts and Fans
Site Address:
CF-6R-MECH-04
(Page 2 of 2)
Enforcement Agency:
Permit Number:
Ducts and Fans
§150(m): Duct and Fans
1. All air-distribution system ducts and plenums installed, sealed and insulated to meet the requirements of CMC
Sections 601, 602, 603, 604, 605 and Standard 6-5; supply-air and return-air ducts and plenums are insulated to a
minimum installed level of R-4.2 or enclosed entirely in conditioned space. Openings shall be sealed with mastic, tape
or other duct-closure system that meets the applicable requirements of UL 181, UL 181A, or UL 181B or aerosol
sealant that meets the requirements of UL 723. If mastic or tape is used to seal openings greater than 1/4 inch, the
combination of mastic and either mesh or tape shall be used; and
† 1. Building cavities, support platforms for air handlers, and plenums defined or constructed with materials other
than sealed sheet metal, duct board or flexible duct shall not be used for conveying conditioned air. Building cavities
and support platforms may contain ducts. Ducts installed in cavities and support platforms shall not be compressed to
cause reductions in the cross-sectional area of the ducts.
† 2D. Joints and seams of duct systems and their components shall not be sealed with cloth back rubber adhesive
duct tapes unless such tape is used in combination with mastic and draw bands.
† 7. Exhaust fan systems have back draft or automatic dampers.
†
†
8. Gravity ventilating systems serving conditioned space have either automatic or readily accessible, manually
operated dampers.
† 9. Protection of Insulation. Insulation shall be protected from damage, including that due to sunlight, moisture,
equipment maintenance, and wind. Cellular foam insulation shall be protected as above or painted with a coating that is
water retardant and provides shielding from solar radiation that can cause degradation of the material.
† 10. Flexible ducts cannot have porous inner cores.
DECLARATION STATEMENT
• I certify under penalty of perjury, under the laws of the State of California, the information provided on this form is true and correct.
•
I am eligible under Division 3 of the Business and Professions Code to accept responsibility for construction, or an authorized
representative of the person responsible for construction (responsible person).
•
I certify that the installed features, materials, components, or manufactured devices identified on this certificate (the installation)
conforms to all applicable codes and regulations, and the installation is consistent with the plans and specifications approved by the
enforcement agency.
•
I reviewed a copy of the Certificate of Compliance (CF-1R) form approved by the enforcement agency that identifies the specific
requirements for the installation. I certify that the requirements detailed on the CF-1R that apply to the installation have been met.
I will ensure that a completed, signed copy of this Installation Certificate shall be posted, or made available with the building
permit(s) issued for the building, and made available to the enforcement agency for all applicable inspections. I understand
that a signed copy of this Installation Certificate is required to be included with the documentation the builder provides to
the building owner at occupancy.
•
Company Name: (Installing Subcontractor or General Contractor or Builder/Owner)
Responsible Person's Name:
CSLB License:
2008 Residential Compliance Forms
Responsible Person's Signature:
Date Signed:
Position With Company (Title):
August 2009
INSTALLATION CERTIFICATE
Duct Leakage Test – Completely New or Replacement Duct System
Site Address:
Enforcement Agency:
CF-6R-MECH-20-HERS
(Page 1 of 2)
Permit Number:
Enter the Duct System Name or Identification/Tag:
Enter the Duct System Location or Area Served:
Note: Submit one Installation Certificate for each duct system that must demonstrate compliance in the dwelling.
This certificate is required for compliance for completely new duct systems installed in new dwelling construction, and also
for completely new or replacement duct systems in existing dwellings. For existing dwellings, a completely new or
replacement duct system can also include existing parts of the original duct system (e.g., register boots, air handler, coil,
plenums, etc.) if those parts are accessible and they can be sealed.
Duct Leakage Diagnostic Test – completely new or replacement duct system
Enter a value for the Allowed Leakage (CFM) for the duct system leakage verification. The value entered must be the
Verified Low Leakage Ducts in Conditioned Space criteria or one of the three calculated leakage rates described below.
Verified Low Leakage Ducts in Conditioned Space (VLLDCS) Compliance Credit. If compliance credit
Allowed
for verified low leakage ducts in conditioned space is shown in the special features section of the CF-1R, the
Leakage
leakage to outside test method must be used to verify duct leakage (refer to RA3.1.4.3.4), and 25 CFM must be
(CFM)
entered for Allowed Leakage.
Allowed leakage calculation – (select one calculation method from this section). Use 6% (leakage factor =
0.06) for calculations if tested at “final” or 4% (leakage factor = 0.04) if tested at “rough.” When utilizing
Low Leakage Air Handler (LLAH) credit, the allowed duct leakage may be specified by the CF-1R to be less
than 6%, in which case the user-specified leakage rate must be used in the calculations below. For example, if
the user-specified leakage (specified as a percentage of fan airflow) is reported on the CF-1R as 3%, then use a
leakage factor of 0.03 in the calculations below.
† Cooling system method:
Nominal capacity of condenser in Tons
x 400 x leakage factor =
(CFM)
† Heating system method:
Output Capacity in Thousands of Btu/hr x leakage factor =
21.7 x
(CFM)
† Measured airflow method (RA3.3):
Enter measured fan flow in CFM here
(CFM)
x leakage factor =
Enter value for Actual leakage (CFM) in the right column, from measurement using applicable duct leakage
pressurization test procedure from Reference Residential Appendix RA3.1(CFM @ 25 Pa).
Actual
Leakage
(CFM)
List Actual Leakage from duct leakage test (CFM)
Pass if Actual Leakage is less than Allowed Leakage
Pass
For complete replacement of duct systems only, if the 6 percent leakage rate criteria cannot be met, a smoke
test should be performed to verify that the excess leakage is coming only from a pre-existing furnace cabinet
(air handler cabinet), and not from other accessible portions of the duct system. A HERS rater must verify the
installation (No sampling allowed).
List Actual Leakage from smoke test(CFM)
Pass if all accessible leaks (except for existing air handler) are sealed using smoke
Pass
Fail
Fail
Registration Number: ___________________________ Registration Date/Time: __________________ HERS Provider: ____________
2008 Residential Compliance Forms
August 2009
INSTALLATION CERTIFICATE
Duct Leakage Test – Completely New or Replacement Duct System
Site Address:
Enforcement Agency:
CF-6R-MECH-20-HERS
(Page 2 of 2)
Permit Number:
Compliance Method
This dwelling was: (select one of the following two choices):
† Tested at Final
† Tested at Rough-in (requires installer to complete the visual inspection at final construction stage described below)
Visual Inspection at Final Construction Stage (if applicable)
After installing the interior finishing wall and verifying that the above rough-in tests was completed, the
following procedure must be performed:
† For all supply and return registers, verify that the spaces between the register boot and the interior finishing wall are
properly sealed.
† If the house rough-in duct leakage test was conducted without an air handler installed, inspect the connection points
between the air handler and the supply and return plenums to verify that the connection points are properly sealed.
† Inspect all joints to ensure that no cloth backed rubber adhesive duct tape is used.
† Outside air (OA) ducts for Central Fan Integrated (CFI) ventilation systems, shall not be sealed/taped off during duct
leakage testing. CFI OA ducts that utilize controlled motorized dampers, that open only when OA ventilation is required to
meet ASHRAE Standard 62.2, and close when OA ventilation is not required, may be configured to the closed position
during duct leakage testing.
† All supply and return register boots must be sealed to the drywall
† New duct installations cannot utilize building cavities as plenums or platform returns in lieu of ducts.
† Mastic and draw bands must be used in combination with Cloth backed, rubber adhesive duct tape to seal leaks at duct
connections.
DECLARATION STATEMENT
• I certify under penalty of perjury, under the laws of the State of California, the information provided on this form is true and correct.
•
I am eligible under Division 3 of the Business and Professions Code to accept responsibility for construction, or an authorized
representative of the person responsible for construction (responsible person).
•
I certify that the installed features, materials, components, or manufactured devices identified on this certificate (the installation)
conforms to all applicable codes and regulations, and the installation is consistent with the plans and specifications approved by the
enforcement agency.
•
I understand that a HERS rater will check the installation to verify compliance, and that that if such checking identifies defects, I am
required to take corrective action at my expense. I understand that Energy Commission and HERS provider representatives will also
perform quality assurance checking of installations, including those approved as part of a sample group but not checked by a HERS
rater, and if those installations fail to meet the requirements of such quality assurance checking, the required corrective action and
additional checking/testing of other installations in that HERS sample group will be performed at my expense.
I reviewed a copy of the Certificate of Compliance (CF-1R) form approved by the enforcement agency that identifies the specific
requirements for the installation. I certify that the requirements detailed on the CF-1R that apply to the installation have been met.
I will ensure that a completed, signed copy of this Installation Certificate shall be posted, or made available with the building
permit(s) issued for the building, and made available to the enforcement agency for all applicable inspections. I understand
that a signed copy of this Installation Certificate is required to be included with the documentation the builder provides to the
building owner at occupancy. I will ensure that all Installation Certificates will come from a HERS provider data registry for
multiple orientation alternatives, and beginning October 1, 2010, for all low-rise residential buildings.
•
•
Company Name: (Installing Subcontractor or General Contractor or Builder/Owner)
Responsible Person's Name:
CSLB License:
Responsible Person's Signature:
Date Signed:
Is this installation monitored by a Third Party Quality Control
Program (TPQCP)?
Yes
No
Position With Company (Title):
Name of TPQCP (if applicable):
Registration Number: ___________________________ Registration Date/Time: __________________ HERS Provider: ____________
2008 Residential Compliance Forms
August 2009
INSTALLATION CERTIFICATE
Duct Leakage Test – Existing Duct System
CF-6R-MECH-21-HERS
(Page 1 of 2)
Site Address:
Enforcement Agency:
Permit Number:
Enter the Duct System Name or Identification/Tag:
Enter the Duct System Location or Area Served:
Note: Submit one Installation Certificate for each duct system that must demonstrate compliance in the dwelling.
This installation certificate is required for compliance for alterations and additions in existing dwellings to space
conditioning systems and duct systems.
Note: For existing dwellings, a completely new or replacement duct system can also include existing parts of the original
duct system (e.g., register boots, air handler, coil, plenums, etc.) if those parts are accessible and they can be sealed. For a
completely new or replacement duct system installed in an existing dwelling, use the Installation Certificate titled "Duct
Leakage Test – Completely New or Replacement Duct System."
Duct Leakage Diagnostic Test – Existing Duct System
Select one compliance method from the following four choices.
† Option 1. Measured leakage less than 15% of Fan Airflow.
† Option 2. Measured leakage to outside less than 10% of Fan Airflow.
† Option 3. Reduce leakage by 60% or more, and conduct smoke test to seal all accessible leaks.
† Option 4. Fix all accessible leaks using smoke test, and HERS rater must verify.
Note: (One of Options 1, 2 or 3 must be attempted before utilizing Option 4.)
Determine nominal Fan Airflow using one of the following three calculation methods.
† Cooling system method: Size of condenser in Tons
x 400 =
CFM
† Heating system method: 21.7 x
Heating Output Capacity (kBtuh) =
† Measured system airflow using RA3.3 airflow test procedures:
1
Option 1 used then:
Allowed leakage = Fan Airflow
Actual leakage =
2
Option 2 used then:
Allowed leakage = Fan Airflow
Actual leakage to outside =
Initial leakage
CFM
CFM
Pass if Actual leakage is less than Allowed leakage
† Pass † Fail
x 0.10 =
CFM
CFM
Pass if Actual leakage to outside is less than Allowed leakage
† Pass † Fail
CFM
Final leakage after sealing all accessible leaks using smoke test =
(Leakage reduction
4
CFM
x 0.15 =
Option 3 used then:
Initial leakage prior to start of work=
3
CFM
- Final leakage
/ Initial leakage
CFM
= Leakage reduction
CFM
) x 100% = % Reduction
Pass if % Reduction > 60%
Option 4 used then:
All accessible leaks repaired using smoke test. HERS rater must verify (No sampling).
† Pass † Fail
Pass if all accessible leaks have been sealed using Smoke Test
† Pass † Fail
Registration Number: ___________________________ Registration Date/Time: __________________ HERS Provider: ____________
2008 Residential Compliance Forms
March 2010
INSTALLATION CERTIFICATE
Duct Leakage Test – Existing Duct System
Site Address:
CF-6R-MECH-21-HERS
(Page 2 of 2)
Enforcement Agency:
Permit Number:
† Outside air (OA) ducts for Central Fan Integrated (CFI) ventilation systems, shall not be sealed/taped off during duct
leakage testing. CFI OA ducts that utilize controlled motorized dampers, that open only when OA ventilation is required to
meet ASHRAE Standard 62.2, and close when OA ventilation is not required, may be configured to the closed position
during duct leakage testing.
† All supply and return register boots must be sealed to the drywall if smoke test is utilized for compliance – applies to
duct leakage compliance option 3 (leakage reduction by 60%) and option 4 (fix all accessible leaks) described above.
† New duct installations cannot utilize building cavities as plenums or platform returns in lieu of ducts.
† Mastic and draw bands must be used in combination with cloth backed rubber adhesive duct tape to seal leaks at all new
duct connections.
DECLARATION STATEMENT
• I certify under penalty of perjury, under the laws of the State of California, the information provided on this form is true and correct.
•
I am eligible under Division 3 of the Business and Professions Code to accept responsibility for construction, or an authorized
representative of the person responsible for construction (responsible person).
•
I certify that the installed features, materials, components, or manufactured devices identified on this certificate (the installation)
conforms to all applicable codes and regulations, and the installation is consistent with the plans and specifications approved by the
enforcement agency.
•
I understand that a HERS rater will check the installation to verify compliance, and that that if such checking identifies defects, I am
required to take corrective action at my expense. I understand that Energy Commission and HERS provider representatives will also
perform quality assurance checking of installations, including those approved as part of a sample group but not checked by a HERS
rater, and if those installations fail to meet the requirements of such quality assurance checking, the required corrective action and
additional checking/testing of other installations in that HERS sample group will be performed at my expense.
• I reviewed a copy of the Certificate of Compliance (CF-1R) form approved by the enforcement agency that identifies the specific
requirements for the installation. I certify that the requirements detailed on the CF-1R that apply to the installation have been met.
• I will ensure that a completed, signed copy of this Installation Certificate shall be posted, or made available with the building
permit(s) issued for the building, and made available to the enforcement agency for all applicable inspections. I understand
that a signed copy of this Installation Certificate is required to be included with the documentation the builder provides to the
building owner at occupancy. I will ensure that all Installation Certificates will come from a HERS provider data registry for
multiple orientation alternatives, and beginning October 1, 2010, for all low-rise residential buildings.
Company Name: (Installing Subcontractor or General Contractor or Builder/Owner)
Responsible Person's Name:
CSLB License:
Responsible Person's Signature:
Date Signed:
Is this installation monitored by a Third Party Quality Control
Program (TPQCP)?
Yes
No
Position With Company (Title):
Name of TPQCP (if applicable):
Registration Number: ___________________________ Registration Date/Time: __________________ HERS Provider: ____________
2008 Residential Compliance Forms
March 2010
INSTALLATION CERTIFICATE
HSPP/PSPP Installation; Cooling Coil Airflow & Fan Watt Draw Test
Site Address:
Enforcement Agency:
CF-6R-MECH-22-HERS
(Page 1 of 2)
Permit Number:
As many as 4 systems in the dwelling can be documented for compliance using this form. Attach an additional form(s) for
any additional systems in the dwelling as applicable.
Hole for the placement of a Static Pressure Probe (HSPP), and Permanently installed Static
Pressure Probe (PSPP) in the supply plenum
When the Certificate of Compliance (CF1R )indicates Cooling Coil Airflow or Fan Watt Draw verification are required,
HSPP or PSPP are required to be installed in each air handler in the dwelling. Procedures for installing HSPP and PSPP
are described in Reference Residential Appendix RA3.3. This measure requires verification by a HERS rater.
Select one method from the two choices below for compliance with the HSPP/PSPP requirement for this dwelling.
1/4 inch (6 mm) hole labeled and located downstream of the evaporator coil in the supply
†
HSPP
plenum as shown in the figure in Section RA3.3.1.1.
1/4 inch (6 mm) hole equipped with a permanently installed pressure probe, labeled and
located downstream of the evaporator coil in the supply plenum as shown in the figure in
†
PSPP
Section RA3.3.1.1.
System Name or Identification/Tag
System Location or Area Served
Confirm that a HSPP or PSPP has been
installed on the air handler per the
requirements of RA3.3.1.1.
Enter Pass or Fail
Cooling Coil Airflow Verification
When the Certificate of Compliance indicates Cooling Coil Airflow verification is required, the procedures for measuring
the cooling coil airflow must be performed as specified in Reference Residential Appendix RA3.3. Results of the cooling
coil airflow diagnostic test must be entered in the table below. This measure requires verification by a HERS rater.
Select one method from the three choices below for compliance with the Cooling Coil Airflow test requirement for this dwelling.
†
†
†
Diagnostic Fan Flow Using Plenum Pressure Matching according to the procedures in RA3.3.3.1.1
Diagnostic Fan Flow Using Flow Grid Measurement according to the procedures in RA3.3.3.1.2
Diagnostic Fan Flow Using Flow Capture Hood according to the procedures in RA3.3.3.1.3
System Name or Identification/Tag
System Location or Area Served
Nominal Cooling Capacity (ton) of the
outdoor unit.
Enter the minimum airflow requirement
from the CF-1R (CFM/ton).
Calculate the target minimum airflow for
the test by multiplying the CFM/ton criteria
specified on the CF-1R by the nominal
cooling capacity of the outdoor unit (ton).
Target (CFM)
Enter the diagnostically tested airflow
(CFM).
Tested (CFM)
The system complies if Tested (CFM) is
equal or greater than Target (CFM).
Enter Pass or Fail
Registration Number: ___________________________ Registration Date/Time: __________________ HERS Provider: ____________
2008 Residential Compliance Forms
March 2010
INSTALLATION CERTIFICATE
HSPP/PSPP Installation; Cooling Coil Airflow & Fan Watt Draw Test
Site Address:
Enforcement Agency:
CF-6R-MECH-22-HERS
(Page 2 of 2)
Permit Number:
Fan Watt Draw Verification
When the Certificate of Compliance indicates Fan Watt Draw verification is required, the procedures for measuring the Fan Watt Draw
must be performed as specified in Reference Residential Appendix RA3.3. Results of the Fan Watt Draw diagnostic test must be entered
in the table below. This measure requires verification by a HERS rater. Note: Fan watt draw must be measured simultaneously with
cooling coil airflow. The fan watt draw measurement and cooling coil airflow measurement must simultaneously meet or exceed their
target criteria specified by the CF-1R for the dwelling.
Select one method from the two choices below for compliance with the Fan Watt Draw test requirement for this dwelling.
†
†
Portable Watt Meter Measurement according to the procedures in RA3.3.3.3.1
Utility Revenue Meter Measurement according to the procedures in RA3.3.3.3.2
System Name or Identification/Tag
System Location or Area Served
Enter the air handler Tested (CFM) from the
cooling coil airflow test table above.
Enter the fan watt draw requirement from the
CF-1R (Watt/CFM).
Calculate the target maximum Watt draw for
the test by multiplying the Watt/CFM criteria
specified on the CF-1R by the air handler
Tested (CFM).
Target (Watt)
Enter the diagnostically tested Watt draw
(Watt).
Tested (Watt)
The system complies if Tested (Watt) is less
than or equal to Target (Watt)
Enter pass or Fail
DECLARATION STATEMENT
• I certify under penalty of perjury, under the laws of the State of California, the information provided on this form is true and correct.
•
I am eligible under Division 3 of the Business and Professions Code to accept responsibility for construction, or an authorized
representative of the person responsible for construction (responsible person).
•
I certify that the installed features, materials, components, or manufactured devices identified on this certificate (the installation)
conforms to all applicable codes and regulations, and the installation is consistent with the plans and specifications approved by the
enforcement agency.
•
I understand that a HERS rater will check the installation to verify compliance, and that that if such checking identifies defects, I am
required to take corrective action at my expense. I understand that Energy Commission and HERS provider representatives will also
perform quality assurance checking of installations, including those approved as part of a sample group but not checked by a HERS
rater, and if those installations fail to meet the requirements of such quality assurance checking, the required corrective action and
additional checking/testing of other installations in that HERS sample group will be performed at my expense.
• I reviewed a copy of the Certificate of Compliance (CF-1R) form approved by the enforcement agency that identifies the specific
requirements for the installation. I certify that the requirements detailed on the CF-1R that apply to the installation have been met.
• I will ensure that a completed, signed copy of this Installation Certificate shall be posted, or made available with the building
permit(s) issued for the building, and made available to the enforcement agency for all applicable inspections. I understand
that a signed copy of this Installation Certificate is required to be included with the documentation the builder provides to the
building owner at occupancy. I will ensure that all Installation Certificates will come from a HERS provider data registry for
multiple orientation alternatives, and beginning October 1, 2010, for all low-rise residential buildings.
Company Name: (Installing Subcontractor or General Contractor or Builder/Owner)
Responsible Person's Name:
CSLB License:
Responsible Person's Signature:
Date Signed:
Is this installation monitored by a Third Party Quality Control
Program (TPQCP)?
Yes
No
Position With Company (Title):
Name of TPQCP (if applicable):
Registration Number: ___________________________ Registration Date/Time: __________________ HERS Provider: ____________
2008 Residential Compliance Forms
March 2010
INSTALLATION CERTIFICATE
Refrigerant Charge Verification - Standard Measurement Procedure
Site Address:
Enforcement Agency:
CF-6R-MECH-25-HERS
(Page 1 of 5)
Permit Number:
Note: If installation of a Charge Indicator Display (CID) is utilized as an alternative to refrigerant charge verification for
compliance, a MECH-24 Certificate (instead of this MECH-25 Certificate) should be used to demonstrate compliance with
the refrigerant charge verification requirement. TMAH and STMS are not required for compliance, when a CID is utilized
for compliance.
As many as 4 systems in the dwelling can be documented for compliance using this form. Attach an additional form(s) for
any additional systems in the dwelling as applicable.
Temperature Measurement Access Holes (TMAH) and Saturation Temperature Measurement Sensors (STMS)
Procedures for installing TMAH are specified in Reference Residential Appendix RA3.2. If refrigerant charge verification
is required for compliance, TMAH are also required for compliance. STMS are only required for completely new or
replacement space-conditioning systems that utilize prescriptive compliance method.
TMAH - Access Holes in Supply and Return Plenums of Air Handler
System Name or Identification/Tag
System Location or Area Served
1
†Yes
†No
2
†Yes
†No
Yes to 1 and 2 is a pass.
5/16 inch (8 mm) access hole upstream of evaporative coil in the return plenum and
labeled according to Figure in Section RA3.2.2.2.2.
5/16 inch (8 mm) access hole downstream of evaporative coil in the supply plenum
and labeled according to Figure in Section RA3.2.2.2.2.
Enter Pass or Fail
9 † Pass
9 † Fail
STMS - Sensor on the Evaporator Coil
System Name or Identification/Tag
The sensor is factory installed, or field installed according to manufacturer's
specifications, or is installed by methods/specifications approved by the Executive
Director.
The sensor wire is terminated with a standard mini plug suitable for connection to a
4
†Yes
†No
digital thermometer. The sensor mini plug is accessible to the installing technician and
the HERS rater without changing the airflow through the condenser coil
5
†Yes
†No
The sensor measures the saturation temperature of the coil within 1.3 degrees F
Yes to 3, 4, and 5 is a pass.
Enter
9 † N/A
9 † Pass
9 † Fail
N/A if STMS are not applicable. Otherwise enter Pass or Fail
3
†Yes
†No
STMS - Sensor on the Condenser Coil
System Name or Identification/Tag
The sensor is factory installed, or field installed according to manufacturer's
specifications, or is installed by methods/specifications approved by the Executive
Director.
The sensor wire is terminated with a standard mini plug suitable for connection to a
7
†Yes
†No
digital thermometer. The sensor mini plug is accessible to the installing technician and
the HERS rater without changing the airflow through the condenser coil
8
†Yes
†No
The sensor measures the saturation temperature of the coil within 1.3 degrees F
Yes to 6, 7, and 8 is a pass.
Enter
9 † N/A
9 † Pass
9 † Fail
N/A if STMS are not applicable. Otherwise enter Pass or Fail
6
†Yes
†No
Registration Number: ___________________________ Registration Date/Time: __________________ HERS Provider: ____________
2008 Residential Compliance Forms
August 2009
INSTALLATION CERTIFICATE
Refrigerant Charge Verification - Standard Measurement Procedure
Site Address:
Enforcement Agency:
CF-6R-MECH-25-HERS
(Page 2 of 5)
Permit Number:
Standard Charge Measurement Procedure (for use if outdoor air dry-bulb is above 55 oF)
Procedures for determining Refrigerant Charge using the Standard Charge Measurement Procedure are available in Reference
Residential Appendix RA3.2. As many as 4 systems in the dwelling can be documented for compliance using this form. Attach an
additional form(s) for any additional systems in the dwelling as applicable.
•
The system should be installed and charged in accordance with the manufacturer’s specifications before starting this procedure.
•
The system must meet minimum airflow requirements as prerequisite for a valid refrigerant charge test.
• If outdoor air dry-bulb is 55 °F or below, the installer must use the RA3.2.3 Alternate Charge Measurement Procedure (Weigh-In
Charging Method). If the Weigh-In Method is used, the dwelling cannot be included in a sample group for HERS verification
compliance.
Space Conditioning Systems
System Name or Identification/Tag
System Location or Area Served
Outdoor Unit Serial #
Outdoor Unit Make
Outdoor Unit Model
Nominal Cooling Capacity (ton)
Date of Verification
Calibration of Diagnostic Instruments
Date of Refrigerant Gauge Calibration
(must be re-calibrated monthly)
Date of Thermocouple Calibration
(must be re-calibrated monthly)
Measured Temperatures (°F)
System Name or Identification/Tag
Supply (evaporator leaving) air dry-bulb
temperature (Tsupply, db)
Return (evaporator entering) air dry-bulb
temperature (Treturn, db)
Return (evaporator entering) air wet-bulb
temperature (Treturn, wb)
Evaporator saturation temperature
(Tevaporator, sat)
Condensor saturation temperature
(Tcondensor, sat)
Suction line temperature (Tsuction)
Liquid Line Temperature (Tliquid)
Condenser (entering) air dry-bulb
temperature (Tcondenser, db)
Registration Number: ___________________________ Registration Date/Time: __________________ HERS Provider: ____________
2008 Residential Compliance Forms
July 2010
INSTALLATION CERTIFICATE
Refrigerant Charge Verification - Standard Measurement Procedure
Site Address:
Enforcement Agency:
CF-6R-MECH-25-HERS
(Page 3 of 5)
Permit Number:
Minimum Airflow Requirement
Temperature Split Method Calculations for determining Minimum Airflow Requirement for Refrigerant Charge
Verification. The temperature split method is specified in Reference Residential Appendix RA3.2.
System Name or Identification/Tag
Calculate: Actual Temperature Split =
Treturn, db - Tsupply, db
Target Temperature Split from Table
RA3.2-3 using Treturn, wb and Treturn, db
Calculate difference: Actual Temperature
Split – Target Temperature Split =
Passes if difference is between -3°F and
+3°F or, upon remeasurement, if between
-3°F and -100°F
Enter Pass or Fail
Note: Temperature Split Method Calculation is not necessary if actual Cooling Coil Airflow is verified using one of the
airflow measurement procedures specified in Reference Residential Appendix RA3.3. If actual cooling coil airflow is
measured, the value must be equal to or greater than the Calculated Minimum Airflow Requirement in the table below.
Calculated Minimum Airflow Requirement (CFM) = Nominal Cooling Capacity (ton) X 300 (cfm/ton)
System Name or Identification/Tag
Calculated Minimum Airflow
Requirement (CFM)
Measured Airflow using RA3.3
procedures (CFM)
Passes if measured airflow is greater than
or equal to the calculated minimum
airflow requirement. Enter Pass or Fail
Superheat Charge Method Calculations for Refrigerant Charge Verification. This procedure is required to be used for
fixed orifice metering device systems
System Name or Identification/Tag
Calculate: Actual Superheat =
Tsuction – Tevaporator, sat
Target Superheat from Table RA3.2-2
using Treturn, wb and Tcondenser, db
Calculate difference:
Actual Superheat – Target Superheat =
System passes if difference is between
-5°F and +5°F
Enter Pass or Fail
Registration Number: ___________________________ Registration Date/Time: __________________ HERS Provider: ____________
2008 Residential Compliance Forms
August 2009
INSTALLATION CERTIFICATE
Refrigerant Charge Verification - Standard Measurement Procedure
Site Address:
Enforcement Agency:
CF-6R-MECH-25-HERS
(Page 4 of 5)
Permit Number:
Subcooling Charge Method Calculations for Refrigerant Charge Verification. This procedure is required to be used
for thermostatic expansion valve (TXV) and electronic expansion valve (EXV) systems.
System Name or Identification/Tag
Calculate: Actual Subcooling =
Tcondenser, sat – Tliquid
Target Subcooling specified by
manufacturer
Calculate difference:
Actual Subcooling – Target Subcooling =
System passes if difference is between
-3°F and +3°F
Enter Pass or Fail
Metering Device Calculations for Refrigerant Charge Verification. This procedure is required to be used for
thermostatic expansion valve (TXV) and electronic expansion valve (EXV) systems.
System Name or Identification/Tag
Calculate: Actual Superheat =
Tsuction – Tevaporator, sat
Enter allowable superheat range from
manufacturer's specifications (or use range
between 4°F and 25°F if manufacturer's
specification is not available)
System passes if actual superheat is within
the allowable superheat range
Enter Pass or Fail
Registration Number: ___________________________ Registration Date/Time: __________________ HERS Provider: ____________
2008 Residential Compliance Forms
August 2009
INSTALLATION CERTIFICATE
Refrigerant Charge Verification - Standard Measurement Procedure
Site Address:
Enforcement Agency:
CF-6R-MECH-25-HERS
(Page 5 of 5)
Permit Number:
Standard Charge Measurement Summary:
System shall pass both refrigerant charge criteria, metering device criteria (if applicable), and minimum cooling coil
airflow criteria based on measurements taken concurrently during system operation. If corrective actions were taken, all
applicable verification criteria must be re-measured and/or recalculated.
System Name or Identification/Tag
System meets all refrigerant charge and
airflow requirements. Enter Pass or Fail
† Residential Appendix RA3.2.2 requires that if the outdoor temperature is between 55°F and 65°F the return air dry bulb
temperature shall be maintained above 70°F during the Standard Charge Measurement Procedure. The signature of the
Responsible Person in the declaration statement below certifies this requirement has been met for all applicable system
verifications reported on this certificate.
DECLARATION STATEMENT
• I certify under penalty of perjury, under the laws of the State of California, the information provided on this form is true and correct.
•
I am eligible under Division 3 of the Business and Professions Code to accept responsibility for construction, or an authorized
representative of the person responsible for construction (responsible person).
•
I certify that the installed features, materials, components, or manufactured devices identified on this certificate (the installation)
conforms to all applicable codes and regulations, and the installation is consistent with the plans and specifications approved by the
enforcement agency.
•
I understand that a HERS rater will check the installation to verify compliance, and that that if such checking identifies defects, I am
required to take corrective action at my expense. I understand that Energy Commission and HERS provider representatives will also
perform quality assurance checking of installations, including those approved as part of a sample group but not checked by a HERS
rater, and if those installations fail to meet the requirements of such quality assurance checking, the required corrective action and
additional checking/testing of other installations in that HERS sample group will be performed at my expense.
• I reviewed a copy of the Certificate of Compliance (CF-1R) form approved by the enforcement agency that identifies the specific
requirements for the installation. I certify that the requirements detailed on the CF-1R that apply to the installation have been met.
• I will ensure that a completed, signed copy of this Installation Certificate shall be posted, or made available with the building
permit(s) issued for the building, and made available to the enforcement agency for all applicable inspections. I understand
that a signed copy of this Installation Certificate is required to be included with the documentation the builder provides to the
building owner at occupancy. I will ensure that all Installation Certificates will come from a HERS provider data registry for
multiple orientation alternatives, and beginning October 1, 2010, for all low-rise residential buildings.
Company Name: (Installing Subcontractor or General Contractor or Builder/Owner)
Responsible Person's Name:
CSLB License:
Responsible Person's Signature:
Date Signed:
Is this installation monitored by a Third Party Quality Control
Program (TPQCP)?
Yes
No
Position With Company (Title):
Name of TPQCP (if applicable):
Registration Number: ___________________________ Registration Date/Time: __________________ HERS Provider: ____________
2008 Residential Compliance Forms
March 2010
INSTALLATION CERTIFICATE
Refrigerant Charge Verification - Alternate Measurement Procedure
Site Address:
Enforcement Agency:
CF-6R-MECH-26-HERS
(Page 1 of 2)
Permit Number:
As many as 4 systems in the dwelling can be documented for compliance using this form. Attach an additional form(s) for
any additional systems in the dwelling as applicable.
Temperature Measurement Access Holes (TMAH) and Saturation Temperature Measurement Sensors (STMS)
Procedures for installing TMAH are specified in Reference Residential Appendix RA3.2. If refrigerant charge verification
is required for compliance, TMAH are also required for compliance. STMS are only required for completely new or
replacement space-conditioning systems that utilize prescriptive compliance method.
TMAH - Access Holes in Supply and Return Plenums of Air Handler
System Name or Identification/Tag
System Location or Area Served
1
†Yes
†No
2
†Yes
†No
Yes to 1 and 2 is a pass.
5/16 inch (8 mm) access hole upstream of evaporative coil in the return plenum and
labeled according to Figure in Section RA3.2.2.2.2.
5/16 inch (8 mm) access hole downstream of evaporative coil in the supply plenum
and labeled according to Figure in Section RA3.2.2.2.2.
Enter Pass or Fail
9 † Pass
9 † Fail
STMS - Sensor on the Evaporator Coil
System Name or Identification/Tag
The sensor is factory installed, or field installed according to manufacturer's
specifications, or is installed by methods/specifications approved by the Executive
Director.
The sensor wire is terminated with a standard mini plug suitable for connection to a
4
†Yes
†No
digital thermometer. The sensor mini plug is accessible to the installing technician and
the HERS rater without changing the airflow through the condenser coil
5
†Yes
†No
The sensor measures the saturation temperature of the coil within 1.3 degrees F
Yes to 3, 4, and 5 is a pass.
Enter
9 † N/A
9 † Pass
9 † Fail
N/A if STMS are not applicable. Otherwise enter Pass or Fail
3
†Yes
†No
STMS - Sensor on the Condenser Coil
System Name or Identification/Tag
The sensor is factory installed, or field installed according to manufacturer's
specifications, or is installed by methods/specifications approved by the Executive
Director.
The sensor wire is terminated with a standard mini plug suitable for connection to a
7
†Yes
†No
digital thermometer. The sensor mini plug is accessible to the installing technician and
the HERS rater without changing the airflow through the condenser coil
8
†Yes
†No
The sensor measures the saturation temperature of the coil within 1.3 degrees F
Yes to 6, 7, and 8 is a pass.
Enter
9 † N/A
9 † Pass
9 † Fail
N/A if STMS are not applicable. Otherwise enter Pass or Fail
6
†Yes
†No
Registration Number: ___________________________ Registration Date/Time: __________________ HERS Provider: ____________
2008 Residential Compliance Forms
August 2009
INSTALLATION CERTIFICATE
Refrigerant Charge Verification - Alternate Measurement Procedure
Site Address:
Enforcement Agency:
CF-6R-MECH-26-HERS
(Page 2 of 2)
Permit Number:
Alternate Charge Measurement Procedure (for use if outdoor air dry-bulb is below 55 °F)
Procedures for Determining Refrigerant Charge using the Alternate Method are available in Reference Residential Appendix RA3.2. As
many as 4 systems in the dwelling can be documented for compliance using this form. Attach an additional form(s) for any additional
systems in the dwelling as applicable.
•
The alternative charge measurement procedure requires that the system shall be installed and charged in accordance with the
manufacturer’s specifications for refrigerant charge using the weigh-in charging method.
•
Installer verification of line lengths and charge adjustment calculation must be documented on CF-6R before starting this
procedure.
• If outdoor air dry-bulb is 55 °F or above, installer must use the Standard Charge Measure Procedure.
Weigh-In Charging Method for Refrigerant Charge Verification
System Name or Identification/Tag
System Location or Area Served
Actual liquid line length (ft)
Manufacturer’s Standard liquid line length (ft)
Calculate: difference in length (ft)
= Actual length – Standard length
Manufacturer’s correction factor
(ounces per foot)
Calculate: charge adjustment
= correction factor X difference in length
Alternate Charge Measurement Summary:
System refrigerant charge has been adjusted to
meet the manufacturer's specifications based on
actual line length
Enter Pass or Fail
DECLARATION STATEMENT
•
I certify under penalty of perjury, under the laws of the State of California, the information provided on this form is true and correct.
•
I am eligible under Division 3 of the Business and Professions Code to accept responsibility for construction, or an authorized
representative of the person responsible for construction (responsible person).
•
I certify that the installed features, materials, components, or manufactured devices identified on this certificate (the installation)
conforms to all applicable codes and regulations, and the installation is consistent with the plans and specifications approved by the
enforcement agency.
•
I understand that a HERS rater will check the installation to verify compliance, and that that if such checking identifies defects, I am
required to take corrective action at my expense. I understand that Energy Commission and HERS provider representatives will also
perform quality assurance checking of installations, including those approved as part of a sample group but not checked by a HERS
rater, and if those installations fail to meet the requirements of such quality assurance checking, the required corrective action and
additional checking/testing of other installations in that HERS sample group will be performed at my expense.
I reviewed a copy of the Certificate of Compliance (CF-1R) form approved by the enforcement agency that identifies the specific
requirements for the installation. I certify that the requirements detailed on the CF-1R that apply to the installation have been met.
I will ensure that a completed, signed copy of this Installation Certificate shall be posted, or made available with the building
permit(s) issued for the building, and made available to the enforcement agency for all applicable inspections. I understand
that a signed copy of this Installation Certificate is required to be included with the documentation the builder provides to the
building owner at occupancy. I will ensure that all Installation Certificates will come from a HERS provider data registry for
multiple orientation alternatives, and beginning October 1, 2010, for all low-rise residential buildings.
•
•
Company Name: (Installing Subcontractor or General Contractor or Builder/Owner)
Responsible Person's Name:
CSLB License:
Responsible Person's Signature:
Date Signed:
Position With Company (Title):
Registration Number: ___________________________ Registration Date/Time: __________________ HERS Provider: ____________
2008 Residential Compliance Forms
August 2009
APPENDIX D
CEC Code Clarification Letters
51
STATE OF CALIFORNIA – NATURAL RESOURCES AGENCY
ARNOLD SCHWARZENEGGER, Governor
CALIFORNIA ENERGY COMMISSION
1516 NINTH STREET
SACRAMENTO, CA 95814-5512
www.energy.ca.gov
Guidelines for Residential HERS Compliance Documentation Registered on or After October 1, 2010 –
Newly Constructed Buildings and Additions
Starting January 1, 2010, the 2008 Building Energy Efficiency Standards required all compliance
documentation for newly constructed low-rise residential buildings requiring HERS verification and
demonstrating compliance under the multiple orientation alternative to be registered with the appropriate HERS
Provider. On October 1, 2010, this requirement was extended to all low-rise residential buildings requiring
HERS field verification.
To ensure compliance with this regulation, please follow these guidelines for newly constructed dwellings and
additions:
•
Look for and review a registered Certificate(s) of Compliance (CF-1R) submitted with the building plans.
A registered CF-1R will have a HERS Provider’s watermark and a unique 12-digit registration number
followed by 13 zeros located at the bottom of each page (see registration number guide and example
registered CF-6R on the following pages).
•
Look for and review an electronically signed and registered Installation Certificate(s) (CF-6R) posted by
the installing contractor at the building site. The first 12 digits of its 21-digit registration number
(followed by four zeros) will match the associated CF-1R’s registration number.
•
At final inspection, look for and review an electronically signed and registered Certificate(s) of Field
Verification and Diagnostic Testing (CF-4R) posted at the building site by a certified HERS rater. The
first 20 digits of its 25-digit registration number will match the associated CF-1R’s registration number.
•
At final inspection, verify that the work listed on the CF-1R has actually been completed and that the
installed equipment matches what is listed on the CF-6R posted at the building site.
•
You may verify that any registered compliance document is valid by searching for it on the appropriate
HERS Provider’s website using the document’s registration number. (Currently CalCERTS
[www.calcerts.com] is the only HERS Provider certified for newly constructed residential buildings and
additions.) If the submitted CF-1R, 6R, or 4R does not exactly match the version posted on the
provider’s website, or if there is no electronic version available, its validity should be questioned.
To combat fraud, the California Energy Commission recommends that building department personnel
use the HERS Providers’ websites to perform random verification checks of registered compliance
documents. (See HERS Providers’ website information on next page.)
September 29, 2010
Registration Number Guide
Note: Only capitalized alpha digits are used, to avoid confusion with the number Zero "0", the letter "O" is not used, and to avoid confusion with the number One "1", the letter "I" is not used. HERS Providers
Approved for Newly Constructed Buildings, Additions, Alterations, and New Solar Homes
Partnership Programs
CalCERTS – www.calcerts.com
Approved for Alterations Only
CBPCA – www.cbpca.org
September 29, 2010
Example Registered CF-6R from CalCERTS
HERS
Provider
watermark
Registration Number
210-N0001972A-M2000005B-0000
For more information, visit www.energy.ca.gov/title24 and www.energyvideos.com, or call the Energy Standards Hotline at (800) 772‐3300.
September 29, 2010
STATE OF CALIFORNIA – THE RESOURCES AGENCY
ARNOLD SCHWARZENEGGER, Governor
CALIFORNIA ENERGY COMMISSION
1516 NINTH STREET
SACRAMENTO, CA 95814-5512
www.energy.ca.gov
Guidelines for Residential HERS Compliance Documentation Registered on or After
October 1, 2010 – HVAC Alterations
Starting October 1, 2010, all required energy compliance forms for residential HVAC alterations
shall be registered with an approved HERS provider when HERS field verification and/or testing
is required. This will include the CF-1R-ALT-HVAC form (or CF-1R-ALT form), all required CF6R-MECH-HERS forms, and all required CF-4R forms. To help simplify verification that all of
these forms are registered when required, please follow these guidelines:
•
The CF-1R-ALT-HVAC form (or CF-1R-ALT form) shall be completed by hand, signed,
and submitted along with the building permit application by the individual applying for the
permit. This form will not be registered at the time of permit application.
•
For the final inspection, the building inspector shall verify that the following energy
compliance forms are completed and signed by the installing contractor (or homeowner
if the homeowner installed the HVAC equipment and/or ducting), and that the forms are
registered by an approved HERS provider:
¾ CF-1R-ALT-HVAC form (or CF-1R-ALT form)
¾ ALL required CF-6R-MECH-HERS forms
¾ ALL required CF-4R forms
NOTE: The CF-1R-ALT-HVAC form identifies which CF-6R-MECH-HERS forms and CF4R forms are required depending on climate zone and the type of HVAC alteration.
•
After the final inspection, the installing contractor shall provide a copy of the registered
energy compliance forms to the homeowner.
HERS Providers currently approved for alterations:
CalCERTS – www.calcerts.com
CBPCA – http://thecbpca.org
For more information regarding residential HVAC alterations, required energy compliance forms,
or the registration of forms, please visit the newly developed 2008 Energy Standards Online
Learning Center at www.energyvideos.com, or contact the Energy Standards Hotline at (800)
772-3300.
Guidance for Enforcement Agencies Regarding
Approval Procedure for Weigh-In Method
With winter temperatures upon us and without an approved alternative procedure to verify
refrigerant charge when temperatures are below 55°F there have been reports of HERS raters
conducting verification of refrigerant charge using an unapproved method in order to close
permits due to pressure by contractors. In other cases, some enforcement agencies are
issuing final building permits on the condition provided in RA 2.4.4 (quoted below). There
doesn’t appear to be a formalized process to ensure that the HERS rater provide the
verification required by the Standards after the final building permit has been issued. The
following guidance has been developed to ensure that the HERS rater has been contracted to
complete the verification process when outdoor temperatures are 55°F or above and the
building permit was approved conditionally.
From RA 2.4.4
If necessary to avoid delay of approval of dwelling units completed when outside
temperatures are below 55°F, the enforcement agency may approve compliance
credit for refrigerant charge and airflow measurement when installers have used
the alternate charging and airflow measurement procedure described in Section
RA3.2. This approval will be on the condition that installers provide a signed
agreement to the builder with a copy to the enforcement agencies to return to
correct refrigerant charge and airflow if the HERS rater determines at a later time
when the outside temperature is above 55°F that correction is necessary.
When the Alternate Charge Measurement Procedure (weigh-in method) is used for refrigerant
charge measurement due to outdoor temperatures being below 55°F, the enforcement agency
may final on the CF-6R on the condition that the installer provides a signed agreement to the
builder or homeowner with a copy to the enforcement agency to return to correct refrigerant
charge and airflow if the HERS rater determines that correction is necessary (per RA 2.4.4).
The enforcement agency should verify a written agreement is in place between the installer
and a certified HERS rater that documents that the HERS rater will measure the refrigerant
charge using the Standard Charge Measurement Procedure when outdoor temperatures are
55°F or above and complete and register the required compliance documentation.
This written agreement should be signed by both the installer and the HERS rater and contain
the project address and homeowner’s/builder’s name, the HERS rater’s and Installer’s names,
and specify how the HERS rater will be paid for performing the verification.
This agreement should be submitted to the enforcement agency instead of a CF-4R before the
final permit for the project is issued. Therefore, in cases where the Alternate Charge
Measurement Procedure is used for refrigerant charge measurement, the enforcement agency
may final the permit after receiving the CF-1R, CF-6R, and the written agreement between the
HERS rater and installer detailed above. No CF-4R will be required at that time, but the HERS
rater will provide the registered CF-4R to the homeowner when the verification is complete and
the CF-4R is registered.
For questions or clarification, contact the Energy Commission’s Building Standards Hotline at
(800) 772-3300.