TECHNICAL QUIETSIDE
DPW Dual Purpose Water
Heating Season 2008/2009
QS-DPW-CT-001
DPW Condensing DPWH
• Basic Model Features
• 2 models 99k & 120k
Btu/h inputs
• Tested AFUE of 90%
• Provides both Heating
and Domestic Hot Water
from one unit
• Modulating induction fan
and gas valve for
complete control
• Wet recuperative heat
exchanger to allow
condensing to reduce
(<140 DegF) exhaust gas
temperature allows
venting in Schedule 40
PVC
What is a Dual Purpose Water
Heater
• A Dual Purpose Water Heater is a unit that will provide
both heating water for space heating and also potable
domestic hot water for washing from a single unit
without any additional controls required
• Domestic hot water is given priority over the space
heating, and is activated by flow through the domestic
hot water system
• DHW is “on demand” and continuous, it will be
provided as long as the faucet is open
• Once DHW call is completed the unit will revert to
heating the house as required
What is a Dual Purpose Water
Heater
• The Closed Loop Heating system and the Potable
DHW system are
COMPLETELY SEPARATED FROM EACH OTHER
• No Check Valves or other Hydronic components are
required for this unit to provide both heating and DHW
• This makes this system a true and better alternative to
taking a tankless water heater and then adding the
necessary components to enable it to provide space
heating
What is a Dual Purpose Water
Heater
• It is not called a Boiler in North America unlike the rest
of the world, this is because
• It does not provide closed loop heating water at a
temperature above 176 DegF
• It does not have an ASME H stamp, therefore cannot
be used in areas where this is a requirement
• Internal Water Volume is less than 1 gallon
• Therefore these units are certified by ANSI Z21.10.32004/CSA 4.3-2004 as a gas water heater
Applications – Hydronic Heating
• 1. Radiant Heating :
Almost the perfect application for this unit
Low water temperature adds efficiency to the
system
Low water volume suits these ultra low mass
type of units
However the only issue is not to slice the zones
to thin as this can lead to short cycling of the unit
when few zones are calling
Applications – Hydronic Heating
2. Fan Coils :
Good application
For maximum efficiency ensure that return
temperature is low enough to allow high
efficiency operation
Use an aqua stat on the air handler to allow
indoor fan to cycle off when in DHW mode
May need 24VAC SPST relay to interface
For Air handlers (even one) with or without
pumps we must use the Quietside
Primary/Secondary piping arrangement
Applications Hydronic Heating
• 3. Baseboard :
Standard US Baseboard temperature is 180 plus
DegF
IF baseboard is sized using these temperatures
Quietside DPWH can only make 176 DegF
MAXIMUM inside the unit – Typically
temperature delivered into the loop is approx 165
DegF
SO – We may need to add additional lengths of
baseboard to the house
Applications Hydronic Heating
• 3. Baseboard (Cont):
∆T and Hi Flow rates can cause problems maintaining
temperature in the system
We recommend designing system for a loop ∆T of 20 to
25 DegF to allow the system to inject enough 160/165
DegF water into the loop to maintain temperature and
comfort
Return temps above 140 DegF back to the DPW
significantly reduce efficiency and condensate production
Therefore care is required as may not be the best
possible application, especially in a true retrofit scenario
Applications Hydronic Heating
• 4. Cast Iron Horizontal Radiator Panels
See baseboard issues regarding the water temperatures
and ∆T delivered at maximum from the DPW
Very high water volume when compared to a radiant or
AHU application
This can create flow issues and expansion tank sizing
problems for the Quietside unit
Return temps above 140 DegF back to the DPW
significantly reduce efficiency and condensate production
Therefore not a preferred application, without careful
planning prior to installation
Which size of DPW?
HOW TO SIZE THE UNIT
• 1. Size the unit to the heating load of the house
THEN
• 2. Size the unit to the domestic hot water usage
of the household.
Use the total max DHW load possible,
i.e. count all of the faucets or appliances that can
be used at a single time, that will be your max
DHW load, e.g. Shower and faucet, Shower and
Laundry etc etc etc
Which size of DPW?
• IT IS NOT ACCEPTABLE TO JUST PICK THE
LARGEST UNIT IN THE RANGE BECAUSE OF
THE DHW REQUIREMENT
• We must ensure that the unit will modulate down
to meet the heating load of the house, providing
that the load is above minimum modulation level
• Short cycling will reduce efficiency and promote
component wear
Sizing the DPW unit
• Q : What is the MINIMUM OUTPUT capacity of a
DPW?
• A:
DPW 099 – 47,000 Btu/h
DPW 120 – 47,000 Btu/h
Values based on net IBR calculations
But I have small Zones?
• Q : My smallest zone is 10,000 Btu/h what can I do to
prevent short cycling of the unit?
• A : Quietside recommends that the smallest zone on the
system should be 25% of the rated unit input or 60% of
the minimum output shown in the previous slide
• In the above case we either need to increase the size of
the zone in question or ………………..
Get a Buffer
• Quietside offers a 20
Gallon buffer tank
• DPW maintains the
tank temperature and
then system pump
(field installed) acts
as a primary loop
pump
Prevents the DPW
from short cycling
Sizing the DPW unit, Part 2
• DHW Production : DPW099
Sizing the DPW unit, Part 2
Sizing the DPW unit, Part 2
• Q : Still not enough DHW Production??
• A : The DPW can be used very easily in conjunction with
a storage tank for an instant supply of DHW – An old
electric or gas water heater works very well
Use a bronze re-circ pump for temperature control in the
tank
OR
Use the Quietside range of Storage tanks which include
all of the parts required
Sizing the DPW unit, Part 2
• Quietside Storage Tank
• 20 Gallon
• Comes complete with
Bronze pump
Mixing Valve
Check Valves
Aquastat to control pump
etc
But I want to use a Tankless
• Homeowners want to a
unit to provide between
6 and 8 GPM of DHW,
without a tank
• All of these units MUST
have a Max Input of
between 180,000 Btu/h
and 240,000 Btu/h for
this level of performance
• DPW has a maximum
Input of 120,000 Btu/h
with a 90,000 Btu/h
being sufficient to heat
most houses
I want my 8 GPM
•
•
•
•
•
Gas Pipe Sizing becomes an issue
Standard House Construction (approx)
Boiler/Furnace
135,000 Btu/h
Storage Water Heater
40,000 Btu/h
Range/Fireplace
30,000 Btu/h
• Total
205,000 Btu/h
• This requires a maximum gas pipe size in the house of 1”
giving full capacity at 80ft of gas piping in the house
I want my 8 GPM
• Gas Pipe Sizing using a DPW with a tank
• DPW (Largest)
135,000 Btu/h
• No storage Water Heater required
• Range/Fireplace
30,000 Btu/h
• Total
165,000 Btu/h
• This requires a maximum gas pipe size in the house of
1”, with ¾” through most of the house giving full capacity
at 80ft of gas piping – no change needed for a retrofit
I want my 8 GPM
• Gas Pipe Sizing using a Tankless for DHW
•
•
•
•
Water Heater
Furnace or Heating unit
No storage Water Heater
Range/Fireplace
• Total
230,000 Btu/h
135,000 Btu/h
30,000 Btu/h
365,000 Btu/h
• This requires a minimum gas pipe size in the house of 1 ½”
to giving full capacity at 80ft of gas piping in the house
But I want to use a Tankless
But I want to use a Tankless
•
•
•
•
•
•
Added Cost
Pump Taco 007
Expansion Tank
Brazed Plate
Flow Switch
Check Valves
• Plus the venting……………………….
DHW & Well Systems
• Pump is required in a
Well application
• Pressure changes during
DHW use can cause
flow/temperature changes
of DHW from DPW
• Reduce differential on
well Pump to minimize
OR
• USE A QSDHS
STORAGE TANK to
prevent this
Installation and Start Up
Locating the DPW unit
• Must be in an indoor location
• Ensure that the temperature in that location does
not fall below 45 DegF
• Ensure that the Indoor humidity levels do not
exceed 80%
• Stay within the venting limitations, total
equivalent length of 45feet, less elbows etc
• Requires a solidly grounded dedicated 115V
power supply
• Ensure that a correctly sized gas pipe is
available
Installing the DPW
• Remove unit from Carton
• Unit installs on a hanging bracket mounted to studs or wall brace
• CANNOT be installed on a combustible wall. Use non combustible
backing plate e.g. Durarock or 24g sheet metal
• Pipe condensate directly to the building drain
• Comply with stated clearances to other appliances
Installing the DPW – Water
Connections, Left to Right
Heating Water Return : ¾” Male Union
DHW Cold Inlet (or tank) ½” Male Union
DHW Supply to house :
½” Male Union
Heating Water Supply :
¾” Male Union
DO NOT OVER TORQUE!!
Installing the DPW – Gas/Vent
• GAS LINE SIZE MINIMUM OF
3/4”, flexible pipe to connect is
acceptable providing it has a
minimum capacity of 250,000
Btu/h
• Drip leg required to prevent dirt
entering gas valve
• Venting : 3” Diameter
Intake and Exhaust is standard –
connections go directly to 3” PVC
• PVC cement, then seal around
vent connection with high
temperature silicone to prevent
leaks
Installing the DPW
EXPANSION TANK AND
PRIMARY LOOP PUMP
INCLUDED
• Expansion Tank is equivalent to
a standard 20 Gallon
• Check your requirement for
expansion especially if you are
doing an old gravity system
• Primary Loop pump, maximum
flow through the Primary Loop is
approximately 3.5 GPM
• If you are using a higher flow on
the system side it will blend
down the temperature delivered
in the heat emitters
Installing the DPW
• Manual feed valve included on
the unit – no pressure setting
however it does have a check
valve
• Always installed an approved
Boiler Feed Valve on the closed
loop system
• Make sure that Backflow
prevention is included
• Taco 335 or 329 is ideal
• Screw the Quietside feed valve
closed and do not open it
Installing the DPW
• Automatic Air vent included
inside unit
• Air Elimination is very
important with these types of
units
• ALSO INSTALL ADDITONAL
VENT AT HIGHEST POINT –
AIR REMOVAL IS SINGLE
LARGEST CAUSE OF FAULT
CODES
Installing the DPW
Note : THE
PLASTIC
SIPHON AT THE
FRONT OF THE
UNIT
IT MUST BE
FILLED PRIOR
TO THE START
UP OF THE
UNIT
Fill To Here
Venting the DPW
• When installing the venting ensure that the Exhaust
Flue is sloped back to the DPW approx 1” per 2ft
horizontal to allow condensate from exhaust gases to
return to the unit for draining – this will also reduce the
build up of ice on the termination during cold weather
• Install termination snout to reduce ice build up, caulk
around the snout
• Install 90 Deg Elbow and birdscreen on the inlet air pipe
Vertical Venting the DPW
• Respect the maximum vent lengths and elbows
• Always use 2 x 45 Deg Elbows on flue pipe
• Use the snout that is provided with the unit for
the flue pipe
• 2 x Elbows are used on the Inlet pip providing
they are in the same barometric plane, don’t
forget the birdscreen
Vertical Venting addendum to IOM available on
request
DPW Circulation Pump
• The pump in the DPW has to overcome the
head losses of the unit Heat Exchangers
• Therefore the external head available to the
system is much less than the gross pump curve
printed, in addition the system is designed for
higher ∆T’s than standard US Cast Iron boilers
Unit
DPW 099
Flow Rate @ 15Ft
External Head
2.1 GPM
DPW 120
2.2 GPM
DPW Water Piping
THEREFORE WE MUST PIPE THE UNIT AS
FOLLOWS, NO IF’S, AND’S OR BUT’S
• With a PRIMARY/SECONDARY LOOP with the unit
injecting hot water into the secondary loop to be
circulated by the loop pump(s)
• We also have found that using additional pumps in
series does not work well with the DPW
• If retrofitting simply remove old unit – replace with
pipe and Tees and then pipe up to DPW like this…..
DPW Water Piping
Cold Water Supply
from House to 1/2"
male connection on
DPW
Use 1/2" Unions
Notes :
When brazing always wrap valves, drains
etc with a wet rag to prevent damage
DPW UNIT
Check system design for requirement for
additional expansion tank on closed loop system
Shut Off Valves to isolate
both Inlet and Supply of
DHW system from DPW
"Boiler Drains" to allow
maintenance of the DHW
Plate Heat Exchanger
Closed
Loop
Return
Pressure Relief Valve
(Factory Supplied)
Pipe to building drain
(See local codes)
Boiler Feed Valve with
Backflow prevention
See local codes
DHW
Cold In
DHW
Hot Out
Closed
Loop
Supply
3/4" Unions to connect
to 3/4" Male Supply and Return
connections on DPW
Shut Off Valves to isolate
both Supply & Return
Boiler drain installed on Primary Loop
should be below DPW Isolation valve to allow
closed loop system to be filled with DPW
isolated from the closed loop to protect unit
A Drain can also be installed on return piping above
shut off valve to drain the unit or Pressure Relief
valve on the unit can be used provide a drain
Anti Scald Valve
MANDATORY
Set for Maximum
of 120DegF
Air Vent at
highest point
House
Hot Water
Supply
Supply to Heating
zones
(No detail shown)
Return from Heating
zones
(No detail shown)
2 x 1 1/4" x 1 1/4" x 3/4" Tees
Space max of 4 Pipe Dia's
apart on tee centerline
"Boiler Drain" - see notes
System Circulation Pump
Field Installed
Use 1 1/4"
pipe diameter
for heating
primary loop
8750 Pioneer Blvd, Santa Fe Springs CA 90670
Tel : 562 699 6066, Fax : 562 699 4351, Web : w w w .Quietside.com
Title : DPW Recommended Piping Layout, Heating & DHW
Drg # : QUI-DPWP-001 Drawn : JLM 8/26/2008
Rev : 001
DPW Water Piping
Cold Water Supply
from House to 1/2"
male connection on
DPW
Use 1/2" Unions
Notes :
When brazing always wrap valves, drains
etc with a wet rag to prevent damage
DPW UNIT
Boiler drain installed on piping
should be below DPW Isolation valve to allow
closed loop system to be filled with DPW
isolated from the closed loop to protect unit
Shut Off Valves to isolate
both Inlet and Supply of
DHW system from DPW
"Boiler Drains" to allow
maintenance of the DHW
Plate Heat Exchanger
Pressure Relief Valve
(Factory Supplied)
Pipe to building drain
(See local codes)
Closed
Loop
Return
Boiler Feed Valve with
Backflow prevention
See local codes
DHW
Cold In
DHW
Hot Out
Closed
Loop
Supply
3/4" Unions to connect
to 3/4" Male Supply and Return
connections on DPW
A Drain can also be installed on return piping above
shut off valve to drain the unit or Pressure Relief
valve on the unit can be used provide a drain
Anti Scald Valve
MANDATORY
Set for Maximum
of 120DegF
Air Vent at
highest point
House
Hot Water
Supply
Coil Inlet
Shut Off Valves to isolate
both Supply & Return
HW Coil
"Boiler Drain" - see notes
AHU
Unit
System is designed for the
Air Handler to be located no
more than 10ft from the DPW
and no more than 5ft above
or below the DPW
Air Handler should not have
it's own circulator installed
Disconnect pump if installed
Use max ø1" pipe for Supply
& Return to AHU. Max total pipe
length (Supply & Return) 20ft
8750 Pioneer Blvd, Santa Fe Springs CA 90670
Tel : 562 699 6066, Fax : 562 699 4351, Web : w w w .Quietside.com
Title : DPW Recommended Piping Layout, AHU (No Pump) & DHW
Drg # : QUI-DPWP-002 Drawn : JLM 8/26/2008
Rev : 001
DPW Water Piping
Closed Loop Heating System Notes :
When brazing always wrap valves, drains
etc with a wet rag to prevent damage
QSDHS DHW System Notes :
Tank system also includes Tank Drain and
P/R Valve (supplied loose)
These should be installed and piped in
accordance with local codes
Check system design for requirement for
additional expansion tank on closed loop system
DPW
DPWH
Boiler drain installed on Supply to closed loop
should be below DPW Isolation valve to allow
closed loop system to be filled with DPW
isolated from the closed loop to protect unit
A Drain can also be installed on return piping above
shut off valve to drain the unit or Pressure Relief
valve on the unit can be used provide a drain
House
Hot Water
Supply
Closed
Loop
Return
Pressure Relief Valve
Pipe to building drain
(See local codes)
3/4" Unions to connect
to 3/4" Male Supply and Return
connections on DPW
Air Vent at
highest point
DHW
Cold In
DHW
Hot Out
Closed
Loop
Supply
DPW DHW Inlet &
Outlet connection
sizes are 1/2"
From
DPW DHW
Outlet
To DPW
DHW Inlet
Anti Scald Valve
MANDATORY
Supplied with QSDHS
Max Setting 120DegF
ø3/4" NPT Connection
"Boiler Drain" - see notes
ø3/4"NPT
Shut Off Valves to
isolate DPW
from Air Handler
Use ø1 1/4" pipe
for Primary Loop
ø3/4"NPT
QSDHS
DHW STORAGE
TANK
SYSTEM
20 GAL
CAPACITY
ø1" NPT
Supply to Heating
zones
(No detail shown)
Return from Heating
zones
(No detail shown)
Secondary or Zone Pump
Taco 008 Bronze Pump
c/w IFC and Shut offs
Supplied with QSDHS
Cold Water Inlet
from House supply
8750 Pioneer Blvd, Santa Fe Springs CA 90670
Tel : 562 699 6066, Fax : 562 699 4351, Web : w w w .Quietside.com
Title : DPW Piping, Primary Loop Htg c/w QSDHS DHW Storage
Drg # : QUI-DPWP-003 Drawn : JLM 9/18/2008
Rev : 001
DPW Water Piping
Closed Loop Heating System Notes :
When brazing always wrap valves, drains
etc with a wet rag to prevent damage
QSDHS DHW System Notes :
Tank system also includes Tank Drain and
P/R Valve (supplied loose)
These should be installed and piped in
accordance with local codes
System is designed for the Air Handler to be located
no more than 10ft from the DPW and no more
than 5ft above or below the DPW
Boiler drain installed on Supply to closed loop
should be below DPW Isolation valve to allow
closed loop system to be filled with DPW
isolated from the closed loop to protect unit
A Drain can also be installed on return piping above
shut off valve to drain the unit or Pressure Relief
valve on the unit can be used provide a drain
DPW
DPWH
House
Hot Water
Supply
Closed
Loop
Return
Pressure Relief Valve
Pipe to building drain
(See local codes)
3/4" Unions to connect
to 3/4" Male Supply and Return
connections on DPW
Air Vent at
highest point
DHW
Cold In
DHW
Hot Out
Closed
Loop
Supply
To DPW
DHW Inlet
DPW DHW Inlet &
Outlet connection
sizes are 1/2"
From
DPW DHW
Outlet
Anti Scald Valve
MANDATORY
Supplied with QSDHS
Max Setting 120DegF
ø3/4" NPT Connection
"Boiler Drain" - see notes
ø3/4"NPT
Shut Off Valves to
isolate DPW
from Air Handler
QSDHS
DHW STORAGE
TANK
SYSTEM
20 GAL
CAPACITY
Use max ø1" pipe for Supply
& Return to AHU. Max total pipe
length (Supply & Return) 20ft
ø1" NPT
HW Coil
AHU
Unit
Taco 008 Bronze Pump
c/w IFC and Shut offs
Supplied with QSDHS
ø3/4"NPT
Cold Water Inlet
from House supply
8750 Pioneer Blvd, Santa Fe Springs CA 90670
Tel : 562 699 6066, Fax : 562 699 4351, Web : w w w .Quietside.com
Title : DPW Piping, Close coupled AHU c/w QSDHS DHW Storage
Drg # : QUI-DPWP-004 Drawn : JLM 9/18/2008
Rev : 001
Power Wiring the DPW
•
•
•
Power Wiring
115V, 15 Amp dedicated
circuit is required
Circuit and unit must be
grounded
•
Unit has internal 3 Amp
glass buss style fuses to
protect the
Microprocessor and
other components
•
Seal around connection
to prevent leakage
Zone Controlling the DPW
• Several ways to for zone control of the units
1. Taco/Argo style zone controller
2. SR501 switching relay
3. SPST Relays allow interface with 24VAC
Thermostats – e.g. Fan Coils
Zone Control Panel Wiring
DSR-100F
NOTES
TO SET DSR-100F
1 PRESS UNIT ON/OFF BUTTON
DPW
DPWH
2 PRESS HEATING SET TEMP
BUTTON (LHS OF ON/OFF BUTTON)
YEL
3 USE UP AND DOWN ARROWS
TO SELECT DESIRED HEATING
WATER TEMPERATURE
RANGE 122-176 DEGF
YEL
BRN
BRN
4 PRESS DHW SET TEMP
BUTTON (RHS OF ON/OFF BUTTON)
5 USE UP AND DOWN ARROWS
TO SELECT DESIRED DHW
WATER TEMPERATURE
98-114 DEGF, 120, 130, 140 DEGF
WHEN DRY CONTACT IS CLOSED UNIT
WILL START AND PROVIDE CLOSED
LOOP HEATING WATER AT THE
TEMPERATURE SELECTED
To Secondary
Pump Control
e.g. Taco
SR501
DHW PRIORITY WILL BE MAINTAINED
WHEN THE ZONE(S) SATISFY THE UNIT
WILL SHUT DOWN, DSR WILL REMAIN LIT
AT ALL TIMES
THIS IS THE PREFERRED METHOD TO
INTEGRATE ZONE VALVES AND
THE SECONDARY LOOP PUMP
8750 Pioneer Blvd, Santa Fe Springs CA 90670
Tel : 562 699 6066, Fax : 562 699 4351, Web : w w w .Quietside.com
Title : DPW & TACO ZVC ZONE CONTROL PANEL WIRING
Drg # : QUI-ZCW-005 Drawn : JLM 10/17/2008
Rev : 001
Zone Switching Relay Wiring
NOTES
TO SET DSR-100F
DSR-100F
1 PRESS UNIT ON/OFF BUTTON
DPW
DPWH
2 PRESS HEATING SET
TEMPERATURE BUTTON
YEL
3 USE UP AND DOWN ARROWS
TO SELECT DESIRED HEATING
WATER TEMPERATURE
RANGE 122-176 DEGF
YEL
BRN
BRN
4 PRESS DHW SET
TEMPERATURE BUTTON
5 USE UP AND DOWN ARROWS
TO SELECT DESIRED DHW
WATER TEMPERATURE
98-114 DEGF, 120, 130, 140 DEGF
WHEN X-X CONTACT IS CLOSED UNIT
WILL START AND PROVIDE CLOSED LOOP
HEATING WATER AT THE
TEMPERATURE SELECTED
DHW PRIORITY WILL BE MAINTAINED
WHEN THE ZONE(S) SATISFY THE UNIT
WILL SHUT DOWN, DSR WILL REMAIN LIT
AT ALL TIMES
THIS IS THE PREFERRED METHOD TO
CONTROL THE SECONDARY LOOP PUMP
REQUIRED IN ALL NON CLOSE COUPLED
AHU & HW COIL APPLICATIONS
8750 Pioneer Blvd, Santa Fe Springs CA 90670
Tel : 562 699 6066, Fax : 562 699 4351, Web : w w w .Quietside.com
Title : DPW & TACO SR501 ZONE CONTROL PANEL WIRING
Drg # : QUI-ZCW-003 Drawn : JLM 9/24/2008
Rev : 001
Zone Switching Relay Wiring
NOTES
TO SET DSR-100F
DSR-100F
1 PRESS UNIT ON/OFF BUTTON
DPW
DPWH
2 PRESS HEATING SET
TEMPERATURE BUTTON
YEL
3 USE UP AND DOWN ARROWS
TO SELECT DESIRED HEATING
WATER TEMPERATURE
RANGE 122-176 DEGF
YEL
BRN
BRN
4 PRESS DHW SET
TEMPERATURE BUTTON
5 USE UP AND DOWN ARROWS
TO SELECT DESIRED DHW
WATER TEMPERATURE
98-114 DEGF, 120, 130, 140 DEGF
WHEN X-X CONTACT IS CLOSED UNIT
WILL START AND PROVIDE CLOSED LOOP
LOOP HEATING WATER AT THE
TEMPERATURE SELECTED
DHW PRIORITY WILL BE MAINTAINED
WHEN THE ZONE(S) SATISFY THE UNIT
WILL SHUT DOWN, DSR WILL REMAIN LIT
AT ALL TIMES
DIAGRAM SHOWS AN SR504, HOWEVER
DIAGRAM CAN BE USED WITH ALL
ZONE CONTROL PANELS (SR, ZV, ETC)
WITH AN X - X OR 0V CONTACT
8750 Pioneer Blvd, Santa Fe Springs CA 90670
Tel : 562 699 6066, Fax : 562 699 4351, Web : w w w .Quietside.com
Title : DPW & TACO SR504 ZONE CONTROL PANEL WIRING
Drg # : QUI-ZW-002 Drawn : JLM 9/24/2006
Rev : 001
SPST Relay Wiring
NOTES
WIRING DIAGRAM FOR CONTROL OF A
AIR HANDLER & HW COIL, WHERE
PRIMARY PUMP IN DPW IS CAPABLE
OF PROVIDING FLOW TO FAN COIL
DSR-100F
DPW
DPWH
TO SET DSR-100F CONTROLLER
YEL
1 PRESS UNIT ON/OFF BUTTON
YEL
2 PRESS HEATING SET
TEMPERATURE BUTTON
BRN
3 USE UP AND DOWN ARROWS
TO SELECT DESIRED HEATING
WATER TEMPERATURE
RANGE 122-176 DEGF
BRN
SPST
RELAY
24V AC
4 PRESS DHW SET
TEMPERATURE BUTTON
5 USE UP AND DOWN ARROWS
TO SELECT DESIRED DHW
WATER TEMPERATURE
98-114 DEGF, 120, 130, 140 DEGF
6 INSTALL AN AQUA STAT IN THE HTG COIL
OF THE AIR HANDLER - WIRE TO FAN
MOTOR TO STOP FAN OPERATION IF
COIL TEMPERATURE FALLS e.g. DHW
PRIORITY OR INITIAL START UP
WHEN T-STAT CALLS FOR HEAT, RELAY WILL
CLOSE AND DPW UNIT WILL START
WHEN T-STAT IS SATISFIED RELAY WILL OPEN AND
UNIT WILL STOP
DSR CONTROL WILL REMAIN LIT AT ALL TIMES
STD 24V
AC
HEAT
COOL
TSTAT
C
C
W
W
HYDRONIC
FAN COIL
8750 Pioneer Blvd, Santa Fe Springs CA 90670
Tel : 562 699 6066, Fax : 562 699 4351, Web : w w w .Quietside.com
Title : DPW & SPST RELAY CONTROL WIRING
Drg # : QUI-DPW-ZW-001 Drawn : JLM 9/6/2006
Rev : 001
DSR-100F Unit Controller
• MUST BE USED
• Will display Air Temp
when first connected
• Will display actual closed
loop water temperature
• DHW Water temperature
is set from the controller
• Fault Codes are
displayed
• DON’T ever put 24V AC
to the DSR
Commissioning the DPW
Once unit is piped, vented and wired it can be
Commissioned
Fill the closed loop system with water
1. Isolate DPW from the closed loop using the shut off
valves
2. Attach hose from DHW water supply to boiler drain
that is open to the closed loop system
3. Fill System – add glycol if required – Only use
Fernox Alphii or No Burst glycol as they do not
attack the seals – Maximum Glycol 30%
4. Once system is full, open shut off valves filling the
DPW
Operation of the DPW
• DSR – Heating Water temp was set
• Call for heat :
• After Call
Unit will pre purge
Pre Ignition
Open Gas valve (Solenoids)
Establish combustion at
60% capacity
Modulation to load using
temp sensor in DPW
Post Ignition
Post purge
More Domestic Hot Water
• DHW Temperature is controlled but you
MUST INSTALL A MIXING VALVE to prevent
scalding
• Minimum flow rate of 0.7 GPM is required to
trigger operation in DHW mode
• Flow switch is normally open – closed circuit =
DHW mode
• DHW production is always prioritized over
heating function – also unit does not need to be
in heating mode to provide DHW
LP Gas Conversion
LP Conversion Kit
Tools required
Crescent wrench,
Philips/Flat screwdriver, Manometer
• 1. Change Gas Manifold
• Then reassemble and follow set
up instructions
• Dip Switch #1 and 2 must be
switched for LP
• Gas Pressure set up is shown
later
Inlet Gas Pressure
• Natural Gas minimum pressure 5.8” WC,
Maximum 9.7” WC
• LP Gas minimum pressure 9” WC, Maximum
13” WC
• If unit has been set up but still is noisy check
Inlet gas pressure, especially under normal
start up
• There is not a tapping for Inlet pressure on the
gas valve
Inlet Gas Pressure
• ENSURE INLET GAS
PRESSURE ON START UP
DOES NOT CHANGE
FROM THE INLET
PRESSURE MEASURED
WHEN UNIT IS NOT
RUNNING
• If this does occur a new
regulator may be required
Annual Maintenance
Routine Maintenance is recommended Water
• Check closed loop system pressure is still at 1 (15
psi)
• Check for leaks at all unions and connections
• Flush and clean Condensate siphon – carbon in the
gas supply can give the siphon a dirty gray color,
use a little washing up liquid to clean – refill with
water
• Check Auto Air bleed screw is loose
Annual Maintenance
Routine Maintenance is recommended - Electric
• Check all exposed electrical connections are secure
Inspect for any signs of overheating
• Check Dip Switch settings
• Energize heating zones to check control circuitry, make
sure DSR is set correctly to required water temps and
mode
Annual Maintenance
Routine Maintenance is
recommended - Gas
• Check Inlet gas piping,
pressure for leaks and/or
pressure deviations
• Remove igniter check for
carbon make sure
connections to Ignition TX
and flame sensor are tight
• Start unit, check flame color
• Switch into low fire mode
check gas valve settings
Re-check in High Fire mode
Annual Maintenance
Routine Maintenance is
recommended - Vent
• Check termination for any
blockage, make sure any
debris is thoroughly
removed
• Check venting for any
cracks or loose joints
• Check Air Pressure switch
operation
• Check Exhaust Duct inside
unit for leaks
Annual Maintenance
Routine Maintenance is recommended - DHW
• Isolate DHW system, then using hose bibs back flush
DHW Heat Exchanger using lime away (pre mixed) or
solution of ethanoic acid (Vinegar)
• Repeat several times in areas of high mineral content to
ensure removal of all debris
Checking Components
•
•
•
•
•
Electrode and Flame
Detector
Single Electrode so no
gap, check the ceramic
The igniter has the pink
marking
Electrode Voltage – 1518kV DO NOT TOUCH!
Flame Detector – Faces
away from electrodes
Flame Detector Voltage
200V to ground
Checking Components
Strainer
• Closed system strainer on
return side
• Catches debris before
passing through the pump
• Held in place with a wire
retainer, be careful when
replacing it
Technical Support
• Both East And West Coast Technical Support is
available
• East Coast : Hours 8AM to 5PM EST Tel : 717
243 2535 (866 243 6498)
• West Coast : Hours 8AM to 5:30PM PST Tel : 562
699 6066 x 3 (888 699 6067)
• Website – www.Quietside.com
DPW Warranty
• All models, FIVE YEAR PARTS – no labor
allowance
• Primary and Secondary Heat Exchangers carry a
12 Year warranty
• Domestic Hot Water Heat Exchanger – 12 years
THANK YOU
FOR
ATTENDING
ANY QUESTIONS??