owner’s
manual
Indirect Fired Gas Heated
Make-up Air Units
ARES Dust Furnaces meet the requirements for ANSI Z83.8b-2004 / CSA2.6b-2004
A Division of:
6850 McNutt Road, Anthony, NM 88021 • Tel: (800)-288-0892 • (575)-589-6200 • Fax (575)-589-2398
Internet: www.specair.net • Email: aresinfo@specair.net
CAUTION: Read all instructions carefully before starting installation.
Form #IFGH0312
Indirect Fired Gas Heated Make-Up Air Unit
Contents
General Information ....................................................................................................3
Principle of Operation .................................................................................................3
Sequence of Operation...............................................................................................3
Component ID and Access .........................................................................................4
1) Heat Exchanger..................................................................................................4
2) Electrical Compartment ......................................................................................6
3) External Components .........................................................................................6
Preliminary Installation Procedure ..............................................................................7
Installation Procedure .................................................................................................8
Secondary Systems Check.......................................................................................13
Start-up Procedure ...................................................................................................16
Belt Selection Procedure ..........................................................................................17
Preventive Maintenance Chart .................................................................................19
Trouble-shooting Chart .............................................................................................20
Wiring Details............................................................................................................22
Parts List...................................................................................................................26
Service and Ordering Information.............................................................................28
Limited Warranty.......................................................................................................29
Owner Registration ...................................................................................................30
Warranty Registration ...............................................................................................31
For Your Safety
If you smell Gas:
1. Open Windows
2. Don’t touch electrical switch
3. Extinguish any open flame
4. Immediately call your gas supplier
THE USE AND STORAGE OF GASOLINE OR OTHER FLAMMABLE VAPORS AND LIQUIDS IN
OPEN CONTAINERS IN THE VICINITY OF THIS APPLIANCE IS HAZARDOUS.
WARNING
IMPROPER INSTALLATION, ADJUSTMENT, ALTERATION, SERVICE OR MAINTENANCE CAN
CAUSE PROPERTY DAMAGE, INJURY OR DEATH. READ THE INSTALLATION OPERATING
AND MAINTENANCE INSTRUCTIONS THOROUGHLY BEFORE INSTALLING OR SERVICING
THIS EQUIPMENT.
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Indirect Fired Gas Heated Make-Up Air Unit
General Information
ARES duct furnaces are CSA (AGA/CGA) approved for outdoor/indoor use.
These units may be located at ground level, sidewall extensions, or rooftop (Indoor units supported
from suspension points.)
The main concern when locating the ARES duct furnace is that it is located in such a manner that
combustion air gases or exhaust ventilator contaminants will not be re-entrained in the furnace air
stream. Check with local code officials when placing this unit.
These units are available in 175,000 BTU, 200,000 BTU, 225,000 BTU, 300,000 BTU, 350,000 BTU
and 400,000 BTU inputs as standard.
All units are power-vented for removing combustion gases from the heat exchanger collection box.
All units are provided standard with type 409 stainless steel heat exchanges to be used in conjunction
with pressed aluminized steel burner assemblies utilizing stainless steel inserts.
These units may be used with or without an evaporative cooling section or separate refrigerant coils
(installed down stream of the furnace section).
Each unit is provided with a control cabinet having the capabilities to insert any additional starters or
control requirements for exhaust fans or other optional equipment.
The unit ignition system consists of a hot surface ignitor used in conjunction with an ignition control
module.
The units may be provided with return air systems incorporating standard or modulating actuators and
damper arrangements. The units may also be equipped with 2 speed motors with “high/low” speed
selector switches on the remote control panel.
Units are supplied with G-90 galvanized or with optional air dry enamel.
Sequence of Operation
1. Upon call for heat from the remote control station or thermostat, the combustion blower motor is
energized.
2. Once the combustion blower is up to speed, a centrifugal switch located in the combustion blowerhousing closes providing a 24-volt signal to the control module.
3. Units specified as “indoor units” will be fitted with an additional air proving switch to be proven
before gas combustion is allowed.
4. The hot surface ignitor is energized by 115-volt signal from the control module.
5. Following a 15-second time delay (allowing the glow-bar to heat), the gas valve is energized
allowing ignition to take place. When flame is detected an internal time delay of 30 seconds will
hold the flame on ‘high fire’ to allow the flame sensor adequate time to heat and sense flame. After
the 30 second delay is satisfied the ductstat will regulate the flame to ‘high/low’ fire.
a. Upon ignition failure, the flame sensor will remove power from the control module.
b. The unit will go through three ignition tries before locking out upon flame failure.
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Indirect Fired Gas Heated Make-Up Air Unit
6. Once flame has been established, unit will continue cycling upon thermostatic demand unless shut
off manually.
7. The manual control is de-energized; the ignition system is interrupted, immediately shutting down
the flame.
8. The blower continues to run until the temperature in the heat exchanger has decreased below the
fan limit setting, at which time the blower circuit is interrupted.
One Stage Operation
Previous sequence is the same with the unit initiating and cycling in a high-fire condition only until the
discharge thermostat is satisfied.
Two-Stage Gas Valve Operation
All previously mentioned sequences remain the same with the exception of a solid state timer providing
power to open the second (high) stage port upon call for heat. High fire will remain for a period of 60
seconds to prove ignition. Upon entering air temperature fluctuation, high fire will remain or drop to low
fire conditions.
Modulating Gas Valve
All combustion sequences remain the same with the exception of the following:
Upon call for heat, main gas valve will open with a solid state timer providing high fire signal to
modulation valve insuring proper ignition.
After 60 seconds, the modulating valve will modulate the gas flow-rate from 100% to 40% of rated
output of the duct furnace.
Remote Discharge Air Adjustment
Provides remote adjustment of discharge air sensor to regulate the discharge air temperature.
Component Identification and Access
The following section will depict each component used in the ARES duct furnace providing location
and procedures used in gaining access.
HEAT EXCHANGER SECTION
1. Heat Exchanger: The heat exchanger is constructed with 409 stainless steel in 2 sizes, one for the
175,000, 200,000, and 225,000 BTU units with 13 cells, and the other for the 300,000, 350,000,
and 400,000 BTU units with 26 cells. In conjunction with these heat exchangers, each exchanger
tube incorporates a furnace baffle, which must be
installed when replacing a heat exchanger. (See
illustration right). For this procedure, consult ARES
Service Department, (800-288-0892).
2. Gas Manifold Assembly: THIS assembly incorporates
a one stage or two stage modulating gas valve used in
conjunction with a regulator when necessary. The gas
nozzle orifices required are sized for each application
depending upon the type of gas, BTU input and
altitude.
3. Burner Assembly: THIS assembly is constructed as a
slide out tray incorporating the burner tube rack, burner
manifold including orifices, flame sensor and HSI ignitor.
It is removable by loosening the bolts on the burner rear
(opposite controls), disconnecting the manifold pipe
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Indirect Fired Gas Heated Make-Up Air Unit
assembly and sliding out from the unit. (See illustration below).
4. Burners: Individual burners are constructed of
aluminized steel with stainless steel inserts. They are
removable by detaching the front access cover, lifting
the burner out of its slot receptacle and removing
from the unit. It must be properly insulated from the
burner frame or burner assembly in order to operate
properly.
5. Flame Sensor: The flame sensor is mounted to the
burner tray assembly. It must be properly insulated
from the burner frame or burner assembly in order to
operate properly.
6. Hot Surface Ignitor: THIS assembly mounted directly to the burner tray provides the means of
ignition when a 120 volt circuit is completed from the ignition module.
7. Orifice Manifold Assembly: Black iron pipe supported by tabs formed as part of the burner tray
assembly. THIS manifold incorporates all orifices for each unit. To remove orifices from this unit, it
is necessary only to slide the tray from the make-up air unit making the orifice manifold assembly
accessible.
NOTE: This assembly must be removed opposite from the control panel assembly.
8. Burner Orifices: These orifices, mounted directly to the orifice manifold assembly, are sized
according to application and may be adjusted for altitude. (For proper sizing, consult ARES Service
Department (800-288-0892).
9. One Stage Gas Valve: THIS gas valve is provided for use in units, which operate in a high fire
condition only. When the gas valve is opened, the flame output is constant and cannot be altered.
As the unit cycles, the valve maintains a full ON or
full OFF condition. (See illustration right)
10. Two Stage Gas Valves: THIS gas valve is located
on the front of the manifold assembly. It will
fluctuate between high and low fire depending on
temperature conditions. A timer is provided to
maintain full fire condition until ignition has been
proven. When temperature is satisfied, the valve
will cycle to low fire condition until a fall in
temperature requires the discharge increase.
11. Modulating Gas Valve: THIS valve is located on the orifice manifold assembly below the control
panel. When used in conjunction with a one stage gas valve, will allow the valve to modulate
between 40 and 100 percent opening depending on discharge proportional control or room
override thermostat. (See illustration left)
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Indirect Fired Gas Heated Make-Up Air Unit
ELECTRICAL COMPARTMENT
The following section describes all the individual electrical
components found within the electrical compartment facilitating
proper operation of the duct furnace
1. Combustion Blower Relay (CBR): THIS relay, upon receiving a
signal from the heat button located in the remote control panel,
provides a circuit to the combustion blower motor. (See
illustration right).
2. Air Proving Switch (APS): Pressure switch sensing negative
pressure within combustion blower housing allows completion of
gas valve circuit when combustion blower is energized. (Indoor
unit only)
3. Fuse Block (FB): THIS fuse and fuse holder, in line with the 100
volt supply circuit, protects the circuit between control
transformer and hot surface ignitor.
4. Control Transformer (CTR): Receives power from terminal X4 through fuse FB. It provides 24-volt
circuit for controls.
5. Ignition Control Module (HSI): Upon receiving a 24 volt signal from the heat selector switch on the
remote control panel, this module initiates the 120 volt circuit to the glow-bar. The HSI also
incorporates the flame sensor and controls to the gas valve. Upon ignition failure, the HSI will open
the gas valve circuit.
6. Time Delay Relay (TD): THIS relay provides a circuit to the high fire gas valve stage to aid in initial
ignition. THIS relay will maintain power for 60 seconds insuring the gas valve is full OPEN upon
start up.
7. Motor Contactor (MC): (Optional) these relays provide power to the duct furnace motor on demand
from the remote control station.
EXTERNAL COMPONENTS
The following lists electrical and mechanical components used as an extension or option with the gas
fired duct furnace. The following descriptions will outline function and approximate locations of these
components.
1. Fan Switch: THIS switch is located adjoining the electrical compartment and maintains power to
the blower motor. It also allows a cool down period upon shutdown of the burner.
2. High Limit Switch (HL): THIS switch is designed to protect the unit in the event of control failure
when the gas valve is in the opened condition. Upon a rise in temperature in the heat exchanger, it
will open eliminating power to the gas valve.
3. Discharge Thermostat (DT): Located adjacent to the electrical compartment. Senses temperature
in the discharge duct and moderates the discharge temperature, permitting heat control at the
discharge outlets.
4. Combustion Blower Motor (CB): THIS motor, referred to as the power venter draws the combustion
gases out of the heat exchanger eliminating any possibility of reentry into the discharge air.
5. Centrifugal Switch (CS): THIS switch, located in the end shaft or end bell assembly of the
combustion blower motor, is a normally open switch closing upon combustion blower start-up. The
purpose of this switch is to prove combustion air or combustion air venting prior to energizing the
gas valve circuit.
6. Flame Sensor (FL): Located on the slide-out burner drawer assembly. Its primary purpose is to
sense flame through direct contact, relaying a signal to the HSI control verifying the flame. If flame
is not proven through the flame sensor, the gas valve will be de-energized after a 15-second delay.
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Indirect Fired Gas Heated Make-Up Air Unit
7. Glow-Bar (GB): Ignitor located upon the slide-out burner assembly. When energized, it provides
gas ignition when the gas valve opens.
8. Remote Control Box (RCB): (Optional) THIS control panel is located in a remote area and provides
the manual control station for operation of the make-up air unit. Generally, a heat-cool-vent
combination of switches is provided. As an option, two speed switches for fan control, return air
damper control switches can be incorporated into this assembly.
9. Gas Valve (GV): As previously described, this valve is located directly below the electrical
compartment in front of the burner assembly. THIS valve opens upon a signal from the remote
control station for heat, allowing the burner to ignite and maintain temperature.
10. Modulating Valve (MV): THIS valve, provided in conjunction with a one stage gas valve, allows the
temperature to be modulated through an increase or decrease in BTU input ranging from 50 to 100
percent open.
Preliminary Installation Procedures
Executed by the Installing Contractor
All code requirements should be addressed and understood
1. Local authorities have jurisdiction over all codes. Make sure all drawing have been reviewed and
approved before attempting installation.
2. Most codes require a minimum separation between any make-up air units and ventilator exhaust
fans, plumbing stacks, and any other equipment where unwanted odors or materials may be drawn
into the system. Insure these minimum separations are maintained.
3. Make sure all electrical rough-ins, disconnects and power supplies are installed according to local
jurisdiction.
4. Make sure plumbing is clearly understood and according to local codes.
5. Some areas require seismic restraints to be applied when duct furnaces are installed. Check with
local authorities to make sure these applications are in compliance.
6. Refer to the installation section to determine the operating weight of the ARES unit being installed.
Check with person responsible for determining roof loads prior to setting this equipment.
The following items should be discussed with the installing contractor. Make sure all loose items are
accounted for prior to installation.
7. If items are found missing, contact ARES Service Department immediately at (800-288-0892).
8. Make sure all electrical service requirements are fully understood prior to installation procedure.
9. Make sure all plumbing service requirements for incoming gas piping are understood prior to
installation.
10. Make sure all field joints for ducting are fully understood prior to installation.
11. Recheck equipment for any damage when may have occurred prior to installation. Any noted
problems should be reported to ARES Service Department immediately at (800-288-0892).
12. Make sure all clearances noted in the installation procedure are complied with when equipment is
being placed.
CAUTION: Failure to do so may result in burner assemblies not having
adequate clearance for removal and service.
13. Make sure hoisting equipment is of sufficient size to adequately lift equipment into place during
installation.
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Indirect Fired Gas Heated Make-Up Air Unit
THE FOLLOWING ITEMS SHOULD BE DISCUSSED WITH THE SHEET METAL
CONTRACTOR
1. Make sure all duct size and layout procedures are fully understood.
2. Make sure turning vanes are installed wherever necessary.
3. Make sure gauge thickness for ducting complies with local code requirements.
LISTED BELOW ARE GUIDELINES AND CHECKS WHICH SHOULD BE
ADDRESSED BY THE JOB SITE ELECTRICIAN.
1. Check equipment nameplate power requirements against electrical details supplied to insure
conformity.
2. Insure building power supplies conform to equipment requirements and electrical drawings.
3. Check all inner connecting wires between control panels, fill and drain kits, and power supplies to
make sure drawings are completely understood.
4. Insure all loose items such as remote controls and thermostats are on site and wiring is
understood.
5. Make sure all field connections are noted prior to installation.
PLUMBERS GUIDELINES TO AID IN INSTALLATION
Make sure all gas piping is sized and understood to maintain code conformity.
ROOFERS GUIDELINES TO AID IN INSTALLATION
A discussion should be held with the people responsible for setting and locating the roof curbs used to
support the ARES duct furnace.
The following items should be check prior to placement.
1. Make sure curbs are installed according to local codes.
2. Insure service accessibility around all areas as defined in the installation procedure.
3. Make sure a type of roof is identified and procedures necessary to complete curb installation are
understood.
4. Make sure necessary clearances between ducting and combustible materials per local codes are
followed.
5. When optional down discharge plenums are incorporated as part of the roof curb, make sure the
roofer consults the ARES submittal drawings for correct size of roof penetration openings.
6. Make sure roof will support total operating weight of the unit. (See operating weights in installation
procedure).
Installation Procedure
CAUTION: Before installation procedure is initiated, make sure all preinstallation instructions have been completed.
Use the following procedure in order to maintain an organized approach for installing ARES rooftop
equipment. (See page 9)
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Indirect Fired Gas Heated Make-Up Air Unit
INSTALLING THE ROOF CURB
Prior to roof curb installation, there are several items that should be verified before mounting the roof
curbs.
Depending upon the type of duct furnace supplied, proper clearances should be adhered to.
1. A minimum of 10 feet is required by most local codes where separation between the duct furnace
intake any plumbing stack or ventilator exhaust fan discharge.
2. ARES recommends a minimum of 36" clearance around the unit for service access and air supply
on side opposite controls.
3. Furnace section on ARES 400, 350 and 300 units require 4 feet of clearance for burner access side
being opposite control panel.
4. Furnace section for ARES unit models 225, 200, and 175, requires 3 feet clearance for burner
access side opposite control panel.
5. Insure proper duct clearance from any combustibles prior to any curb placement.
When the above items have been satisfied, place roof curb according to rooftop layout anchor and
flash according to local codes.
Placement of the Duct Furnace
Before hoisting the duct furnace into place, several items should be considered.
1. Clear surrounding area of all debris or materials that may interfere with proper placement
procedure.
2. Reaffirm ARES weight in compliance with building structure. (See chart below)
UNIT WEIGHTS
Model
Hoist Wt.
Operating Wt.
P.S.F.
200
300
300
38
225
300
300
38
300
525
525
44
350
525
525
44
400
525
525
44
175
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300
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Indirect Fired Gas Heated Make-Up Air Unit
3. For hoisting the unit into place, spreader bars should be used in
order to prevent damage to the ARES unit when lifted. (See
illustration left).
NOTE: Duct furnaces are suitable for use in aircraft hangars,
parking structures, and repair garages when installed, as
applicable, in accordance with the Standard for Aircraft Hangers,
ANSI/NFPA 409, the Standard for Parking Structures, ANSI/NFPA
88A, and the Standard for Repair Garages, ANSI/NFPA 88B, and so
marked.
CAUTION: If this appliance is connected to a return air duct or
any other inlet air restriction, the appliance should be installed
on the positive pressure side of the air-circulating blower.
4. Position unit properly upon roof curb.
5. Properly position transition elbow over roof jack assembly with
duct furnace in place.
6. Secure transition elbow to discharge opening of duct furnace. Secure flanged inlet connection and
seal. (See illustration below)
7. Push extension duct through roof
jack until bottom flange is flushed
with ceiling and extension duct has
been inserted into the transition
elbow.
8. Secure roof jack into place (if
required ) and flash or seal.
9. Secure interior ductwork to
extension duct previously installed.
10. Protect outdoor ductwork with
weatherproof installation where
required.
CAUTION: Any ductwork within
6 feet of unit must have a
minimum of 2 inches clearance
from combustible material.
11. Ducts connected to the appliance
shall have removable access
panels on both upstream and
downstream sides of the appliance.
These openings shall be accessible when the appliance is installed in service, and shall be of such size that smoke or reflected
light may be observed inside the casing to indicate the presence of leaks in the heating element.
The cover for the opening shall be attached in such a manner as to prevent leaks.
Gas Installation
Installation must conform to local building codes. In absence of these codes, installation should comply
with National Fuel Gas Codes ANSIZ223.1- latest edition.
1. Run proper sized gas line from the unit. Check local gas utility for line pressure drops making sure
all codes are complied with. Check BTU input rating on ARES nameplate data for proper sizing.
Assure compliance for correct selection and spacing of pipe supports.
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Indirect Fired Gas Heated Make-Up Air Unit
2. Install an approved manual shutoff valve (gas cock) and drip leg at the inlet connection to the
ARES unit for collection of liquid and other foreign matter. THIS valve should be located
immediately prior to the external jacket of the unit. THIS valve should be protected from physical
damage. (See chart and illustration below) THIS valve should also comply with the National Fuel
Gas Codes.
INLET INFORMATION
MANIFOLD PRESSURE
GAS SUPPLY 3/4"
NTL
LPG
NTL
LPG
3.5" MIN
10" MIN
7.5" WC
14" WC
3. When altitudes over 4,000 feet are specified on purchase orders, the factory will furnish main
burner or orifices to reduce input 4 percent of each 1,000 of altitude above actual seal level.
(Orifices and pressure regulator are not to be re-sized or tampered with in the field).
4. THIS appliance and its individual shut-off valve must be disconnected from the gas supply piping
system during any pressure testing on the system in excess of 1/2 PSIG. The appliance must be
isolated from the gas supply piping system by closing its individual manual shut-off valve during
any pressure testing of the gas supply piping system at test pressures equal to or less than 1/2
PSIG.
5. When piping has been completed, bleed the gas line. Use a soap solution to leak check complete
system.
6. A 1/8-inch N.P.T. plugged tapping, accessible for test gage connection, must be installed
immediately upstream of the gas supply connection to the appliance.
7. When piping has been completed and leaks checked, pressure test incoming supply line insuring
pressure does not exceed manufacturer recommendations. (1/2 PSIG).
Electrical Installation
Complete the following electrical installation procedure as outlined.
1. Refer to unit nameplate data and crosscheck with incoming power supplied to insure requirements
are correct as specified.
2. Install a suitable and code acceptable external disconnects switch. THIS disconnects switch may
be provided as an option through ARES.
3. THIS appliance must be grounded electrically in accordance with the National Electrical Code,
ANSI/NFPA 70- latest edition.
4. Electrical controls are operated by a 24 VAC transformer. Units other than 120-volt input will
require a transformer or operator of the combustion blower and HSI glow-bar. These units are
equipped with a hot surface ignition (HSI) system.
WARNING: Never attempt to service this control.
5. Remote Control Station: These controls, generally located where the air is being delivered, are
available with several options. Follow wiring diagrams provided on control cabinet cover for proper
connection. All field connections between the remote control panels and supply air terminal strips
should be 17 gauge wire or larger.
6. When installation is complete, recheck voltage at each unit disconnect comparing with nameplate
data.
ADJUSTING AIR THROUGHOUT
1. This appliance shall be adjusted to obtain an air throughout within the range specified on the
appliance rating plate located adjacent to the electrical control panel.
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Indirect Fired Gas Heated Make-Up Air Unit
VENT INSTALLATION INSTRUCTIONS FOR INDOOR
UNITS
1. Locate combusting blower outlet (See illustration top right).
2. Fit square to round adapter over power venture discharge opening
(See illustration bottom right).
3. Secure square to round adapter to combustion outlet with No. 10
sheet metal screws in location shown in illustration below.
4. Install approved (6") elbow in vertical position only, securing with
non-corrosive sheet metal screws.
5. Run approved (6") vent pipe vertically to outside of building. (Secure
each section with non-corrosive screws) insure vent pipe is properly
supported.
WARNING: All gas-fired units must be properly vented to
outside atmosphere.
6. When passing through combustible roof, provide standard wall
thimble as made by vent manufacturer.
7. Provide adequate height to clear possible snow levels, down drafts,
local codes, etc.
8. Provide Type B vent cap assembly installed per local codes.
Burner Assembly
The following section describes the ARES burner assembly along with components used in
conjunction with it.
1. Burner Tray: The burner tray slides into the ARES heat exchanger compartment from the opposite
side control panel. It is held in place with 2 tek screws, which can be removed for service. The
proper procedure for removing this assembly is to disconnect all power and gas service at the
a/manifold assembly. Follow the procedure shown right.
a. Disconnect the wiring harness,
connected to the glow-bar
assembly located in front of the
housing (See illustration right)
b. Disconnect flame sensor leads.
c. Slide burner assembly until it is
clear from the unit.
2. Burners: The burners are located in a
pre-punched metal housing. They can
be removed for cleaning and service
by following the procedure outline
below.
a. burner assembly as previously
described.
b. When burner assembly has
been removed from unit,
remove the tek screws holding
the burner retainer plate. (See
illustration above).
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Indirect Fired Gas Heated Make-Up Air Unit
c. When burner plate has been removed, lift burner assembly out of receptacle. (See previous
illustration)
d. Blow or wash blockage from burner assemblies as required.
e. Reassemble burner assembly in reverse procedure as previously described.
Secondary Systems Check
Executed by individual trades following installation completion. This check list when completed in the
following sequence will insure all equipment is properly installed and ready for start-up.
ELECTRICAL CHECK
1. Be sure all ON/OFF switches are in the OFF position.
2. Be sure incoming voltage and phasing are compatible with voltage ratings on the ARES unit
nameplate.
3. Be sure fuses and overloads are properly sized.
4. Make sure all debris and loose parts are clear from the blower assembly.
5. Make sure belts and sheaves are properly adjusted.
6. Turn disconnect on, energize blower unit in the vent model only.
7. Check blower for proper rotation.
8. Obtain amp reading at blower motor relay. Compare with nameplate rating.
9. Set thermal protector on make-up air starter 2 amps above operating current of make-up air unit
motor. (See illustration below)
10. Switch unit to low speed if required. Recheck current draw.
This completes the electrical sequence.
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Indirect Fired Gas Heated Make-Up Air Unit
MECHANICAL CHECK
1. Double check all rotations. (See illustration below)
2. Check all sheaves and belts for proper alignment. (See illustration below)
3. Obtain air readings. Make sure unit is delivering proper amount of air.
4. Make sure all return air dampers, fill and drain kits are operating properly.
5. Make sure no return air dampers or other dampers installed in the duct system are in the closed
position.
This completes the mechanical check.
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Indirect Fired Gas Heated Make-Up Air Unit
PLUMBING CHECK
1. Verify all incoming gas piping has been completed according to code.
2. With manual valve in OFF position, turn thermostat to lowest setting preventing call for heat.
CAUTION: Combustion blower motor should not energize at this time.
3. Open manual hand valve to the ARES unit.
4. Turn gas valve to ON position.
5. Set thermostat (located next to control panel) up to call the heat condition.
6. At this time, combustion motor should energize and gas valve should open after 15-second delay.
7. Obtain manometer reading at pressure tap location on gas valve.
8. Compare with specifications.
PLUMBING EVAPORATOR CHECK (if ordered)
1. Open valve allowing evaporator pan to fill 2" and adjust float accordingly.
2. Cycle unit to cool position. At this time, evaporator pump should energize, distributing water to the
evaporative pad.
3. Make sure all distribution points are clear of obstructions and pads are receiving water.
4. Make sure bleed-off valve is set to bleed a minimal amount of water from the circulation cycle.
5. Check evaporator pan for any water leaks which may be occurring.
6. Switch unit to vent position.
CAUTION: Unit will not drain automatically. Seasonal maintenance is required
to provide water system freeze protection.
This concludes the secondary systems check.
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Indirect Fired Gas Heated Make-Up Air Unit
START-UP PROCEDURE
This procedure should be used as a guideline when performing a start-up on any ARES gas fired
make-up air unit. Whenever possible, person doing start-up should be accompanied by the installing
plumber and electrician to answer questions and resolve any problems identified.
1. Check all voltage against nameplate and motor data.
2. Confirm all electrical, plumbing (gas and water) has been completed and leak checked.
3. Set disconnects in ON position.
4. Bump starter or relay to determine correct blower rotation.
5. Set disconnect to off.
6. Allow unit to stop. Check all belts for alignment.
7. Check blower wheel, locking bolts and shaft bearing collars for tightness.
8. Turn ARES disconnect to ON position (gas valve off).
9. Turn unit vent cycle to ON position.
a. Check blower rotation.
b. Listen for unusual noises.
c. Observe blower to ensure smooth start-up and proper belt tension.
d. Balance air according to design in summer applications; in winter conditions, balance the
heating unit operating.
e. Leak check gas train assembly, turn gas valve to ON position.
10. Turn discharge thermostat to lowest setting.
a. Open gas line hand valve.
b. Turn gas valve to ON position.
c. Turn remote control station to heating mode.
d. Increase thermostat setting until heat is called for. Unit should ignite. If ignition fails, see
maintenance section.
e. Obtain pressure reading at gas valve pressure tap.
f. Set thermostat at desired setting.
11. Cycle remote to cool condition (weather permitting).
12. Fill evaporator pan with 2" of water, adjust float accordingly.
13. Evaporator pump should not be distributing water to the evaporative pads.
14. Check for evaporator pan leaks or carry-through.
15. Get fill and drain kit provided, turn unit to OFF position, verify unit drains.
16. If winter or fall condition, drain evaporator pan, leave drain plugs out.
17. If summer condition, allow evaporator pan to fill and adjust bleed-off as required. (See
maintenance section)
18. Complete start-up form as required.
Tel: (800)-288-0892  Internet: www.specair.net
16
Indirect Fired Gas Heated Make-Up Air Unit
BELT
There are several measures which may be taken to increase belt longevity.
1. Avoid short turn radius as much as possible. Short turn radius causes belts to slip on start-up due
to increased torque and lack of friction coefficient. Each time a drive motor pulley slips on a belt, it
creates wear, eventually causing breakdown. This factor is even more important in extreme cold
climates. Whenever possible, motors and pulleys should be sized taking advantage of broader
radius.
2. When installing the belt or adjusting tension, loosen the four motor mounting bolts and reposition
the motor until the belt can be deflected 1/2" to 3/4" for each lineal foot of belt between the center
of the pulley and sheave. (See illustration below)
NOTE: Never adjust the belt tension by changing the setting of the motor sheave. This setting was
determined to provide the correct blower speed for the given CFM and system static pressure.
CAUTION: Belts which are overtightened can have a very damaging effect on the
blower bearing assembly.
3. Belts should never be run out of alignment. This alignment cannot be checked visually from outside
the blower compartment. A straight edge should always be used when aligning belts properly. (See
illustration below)
4. Generally belts will stretch during the first 48 hours of operation and should be re-adjusted again at
two weeks. From that point on, belt tension should be checked during Spring and Fall start-up.
See chart on following page for belt size selection.
Tel: (800)-288-0892  Internet: www.specair.net
17
Indirect Fired Gas Heated Make-Up Air Unit
Outside
belt
length
(inches)
Sum of
pulley
diameters
(inches)
20
25
4
35
40
6
50
8
55
9
60
65
10
75
80
12
18
19
20
25
30
85
13
17
20
70
11
16
15
45
7
15
10
30
5
14
Center
distance
(inches)
HOW TO USE BELT LENGTH SELECTOR:
You must know:
1. Sum of diameters of two pulleys involved.
2. Distance between shaft centers.
Then:
1. Located the point on the left-hand line
equal to the sum of the pulley diameters.
2. Locate the point on the right-hand line
equal to center distance desired.
3. Hold a straight-edge against the chart
connecting these two points. Where the
straight-edge intersects the center line,
read the belt length required.
21
Example: DriveN sheave = 6 in.
DriveR sheave = 3 in.
Total = 9 in.
22
Center distance = 30 in.
Then outside belt length = 74.5 in.
Tel: (800)-288-0892  Internet: www.specair.net
90
35
95
100
40
45
50
55
18
Indirect Fired Gas Heated Make-Up Air Unit
Preventative Maintenance Procedures
MAINTENANCE ITEMS
QUARTERLY
HEATING SEASON
COOLING SEASON
Check and clean.
Check and clean.
Replace if necessary.
Replace every 5 yrs.
STANDARD EVAPORATIVE COOLERS
Evap/filter media
Check and clean.
Evap pump/basket
Clean before start
of season.
Check for operation.
Evaporator pan
Check and clean.
Drain and clean.
Clean and fill.
Float valve assembly
Check operation.
Turn off water supply.
Turn on water and
check for proper
adjustment, 2" in pan.
Bleed off valve
Check for clogging.
Belt adjustment
Check tension, wear
and adjustment.
Adjust as needed.
Adjust as needed.
Water distribution
manifold
Clean and flush.
Be sure to turn off
water supply & drain
water from system.
Clean & flush. Make
sure all distribution
points are free of any
obstructions.
Blower motor
Check amp draw, belt
tension & wear.
Check amp draw and
oil bearings.
Check amp draw &
oil bearings.
Drives, bearings
& pulleys
Check alignment &
bearing wear.
Check alignment &
bearing wear.
Check alignment &
bearing wear.
Fill & drain kits
Check corrosion
& leaks.
Ensure drain valve
opens, draining pan.
Ensure fill valve opens,
filling pan.
Assure proper
placement in drain
overflow pipe.
DUCT FURNACES
Burner tray assembly
Gas train assembly
Remove & clean
burners before start
of heating season.
Check for leaks.
Check for leaks.
Check for proper
gas pressures.
Discharge t-stat
Check for desired
discharge setting.
Power ventor
Oil with SAE oil as
prescribed, check to
ensure centrifigle
switch is operational.
Remote control panel
Cycle all modes.
Tel: (800)-288-0892  Internet: www.specair.net
Cycle heat mode.
Cycle cool mode.
19
Indirect Fired Gas Heated Make-Up Air Unit
Trouble Shooting Chart
PROBLEM
PROBABLE CAUSE
CORRECTIVE ACTION
Unit Fails to Ignite For Heat
Insufficient Inlet Gas Pressure
Check Pressure & Pressure Tap
On Gas Valve
Heating Operation
Blower Motor Runs
Combustion Blower Fails to
Prove Combustion
Pressure Switch not in
Closed Position
Unit Fails To Ignite Upon Call
For Heat
Gas Valve in Closed Position
(or modulating valve)
Defective HIS Control
Thermostat not Calling for Heat
Defective High Limit Switch
Defective Time Delay
Check Control Using Flowchart In
Maintenance Section
Check T-State Setting
Take Continuity Reading Across
Switch Replace if Defective
Replace Solid State Time Delay
Defective Proportional Control
(if required)
Obtain OHM Reading from R-W,
Replace if Open
Defective Hot Surface Ignitor
Preventing Ignition
Replace Defective Hot Surface
Ignitor. Check with OHM meter.
Flame Sensor Shorting to Ground
Reposition or Replace Flame Sensor
Check Thermostat Adjustment
Increase as Necessary
Defective Flame Sensor
Moisture on Air In Gas Line
Check and Replace if Defective
OHM Switch out-Replace if Defective
Replace Defective Flame Sensor
Bleed and Retry
Defective Proportional Control
Replace Defective Control
Defective Room Override Control
Replace as Necessary
Defective Gas or Modulating Valve
Unit Too Small
Replace as Necessary
Add Additional Units
High Limit Switch Cycling @
Low Temperature
Replace High Limit Switch
Defective or Shorted Flame Sensor
Correct or Replace
Incorrectly Sized Burner Orifices
Identify and Correct
Too Much Air Flow Across heat
Exchanger
Improper Gas Pressure
Defective Thermostat
Thermostat Sensing Element
Positioned Incorrectly
Unit Incorrectly Wired
Tel: (800)-288-0892  Internet: www.specair.net
Check Gas Valve in ARES Unit, if
open, Check Inlet Supply Valves
Check and Replace if Defective
Defective Room Override Switch
Unit Fails to Control Discharge
Temperature ( Too Hot)
Check Power Vent and Sensor
Tube
Defective Combustion Blower
Motor
Defective Combustion Blower
Relay
Unit Fails to Maintain Adequate
Discharge Temperature
Check Centrifugal Switch
Located I the Combustion Blower
Housing
Reduce Air volume
Verify and Correct
Replace T-Stat
Place Element in Proper Position
Check Wiring, Correct as
Necessary
20
Indirect Fired Gas Heated Make-Up Air Unit
Trouble Shooting Chart (cont.)
PROBLEM
Unit Fails to Control Discharge
Temperature ( Too Hot)
PROBABLE CAUSE
Shorted Wiring or T-Stat
Defective Gas Valve
Burner Flashback @ Valve
De- Energization
Burner Flashback at Time
of Ignition
Yellow-Tipped Abnormal Flame
(Too High)
Manifold Pressure Too High
Adjust to Specs.
Increase Air Volume
Incorrectly Positioned or Damaged Replace Defective Burners
Burner Assembly
Defective Burner Ribbon
Replace Defective Burner
Damaged carry-over Strip
Replace Damaged carry-over Strip
Lack of Combustion Air
Obstructed Burner Ribbons
Fuel Odors or Burning Eyes
@ Discharge Areas
Replace Valve
Adjust T-Stat
Improper Burner Orifices
Lifting or Wafting Flame
Characteristic
Identify and Correct
Incorrect Thermostat Setting
Air Volume Too Low for
Thermostat Setting
IMPROPER FLAME
CHARACTERISTICS
CORRECTIVE ACTION
Improper Burner fit or Alignment
Check Combustion Blower Motor
and Collector Box for Obstruction
or Defects
Install Correct Orifices
Change Defective Burner
Adjust Burners for Proper Operation
Incorrect Gas Pressure (Too High) Check Gas Pressure Adjust to
Recommendations
Gas Leak
Defective Burner Assembly
Cracked heat Exchanger
Damaged Gas Valve
Shut Unit Down and Correct
Immediately (Soap Check)
Replace Defective Assembly
Check and Replace if Necessary
Replace Defective Valve
Paint and Oil Burn-Off on Start-Up Allow Unit to Burn Until Oil
Has Cleared
Tel: (800)-288-0892  Internet: www.specair.net
21
Indirect Fired Gas Heated Make-Up Air Unit
Tel: (800)-288-0892  Internet: www.specair.net
22
Indirect Fired Gas Heated Make-Up Air Unit
Tel: (800)-288-0892  Internet: www.specair.net
23
Indirect Fired Gas Heated Make-Up Air Unit
Tel: (800)-288-0892  Internet: www.specair.net
24
Indirect Fired Gas Heated Make-Up Air Unit
Tel: (800)-288-0892  Internet: www.specair.net
25
Indirect Fired Gas Heated Make-Up Air Unit
PRODUCT PARTS LIST
PART NO. DESCRIPTION
139830 FUSE FRN-R 10 AMP 300 VOLT
163725 HLDR 18001 BUSSMAN FUSE
186929 *****NOT ON FILE*****
189880 LGHT 1090-A1Red 28V PILOT
189890 LGHT 1090-A3 YELLOW 28V PILOT
189900 LGHT 1090-A5 Green 28V Pilot
980180 WIRE IGN LEAD WIRE ASSY
980215 SWCH ASSY LIMIT
981785 UNN 3/4 IN 150 L P1-728-2
981790 UNN 1 IN 150LB P1-728-3
981830 SPUD DRILL NO. 58 P1-757-10
981833 SPUD DRILL NO. 47 P1-757-5
981834 SPUD DRILL NO. 45 P1-757-2
981835 SPUD DRILL NO. 44 P1-757-4
981940 ASP4128-403 W/BUTTONS SWITCH
982005 SNSR FLAM P2-2137-18
982010 VLV MODULATING 3/4 P2-2271
982015 VLV MODULATING 1 IN P2-2272
982020 CNTL TEMP 55T0175F P2-2273
982025 LGHT IGN PILOT P2-2274
982030 SWCH TIPPETTE DBTH P2-2275
982055 VLV MAIN NAT GAS V845c1040
982080 1237 STRAIN RELEIF BUSHING
982105 CONN 1/2-90*CDT P2-462
982125 SWCH AIR 150*F P2-578-1
981230 SWCH LIMIT 165*F P2-579
982140 SWCH LIMIT 200*F P2-599
982150 18TKGT BEIGE STRANDED WIRE
982205 R822B1000 34V FAN SWCH. RELAY
982210 LGHT PILOT RED P2-990-1
982215 LGHT PILOT GREEN P2-990-2
982220 LGHT PILOT AMBER P2-990-3
982230 SWCH FAN P2-995
982360 LBL CAUTION P7-2113
982430 LBL DQPT GROUND P7-3013
983385 LLUG GROUND 134844
983485 THST 1 STAGE 143708
983610 CMPD PIPE 144079
983840 CNTL DSI SYSTEM 144169-1
983845 CBL INPUT 144170-1
983915 HTR ASSY 144243-1
983920 HTR ASSY 144243-2
983925 HTR ASSY 144243-3
983930 HTR ASSY 144243-4
983940 HTR ASSY 144243-4
984125 7903 HONEYWELL 24V 30A RELAY
984130 LO SPEED 144368-1 RELAY
984215 CNDT 1/2 EXT-FLEX GALV 144523
986140 40-D-217 TAN SEMIGLOSS ENAMEL
986145 40-D-TAN 12OZ AEROSOL ENAL
986170 TSI12160 24V 1AMP SOLID TIME
986180 TS22160 24V 1AMP SOLID TIME
986190 1120 CVH FACE PLT.
986191 1130 CVH 2SP FACE PLT.
986194 1145 CVH R/A MOD FACE PLT.
986198 1165 VH FACE PLT.
986206 1511-12-13 OFF-VENT FACE PLT.
986270 1225 HEAT EXCHANGER FURNACE
986275 1400 HEAT EXCHANGER FURNACE
986290 5/8" X 1/2 X 50' NEOPRENE GASKET
986295 FURNACE BAFFLE HANGER
986298 PF3360 X/ 1X36 FOIL FACED INSUL
986300 #0987360 REPLACE FILTER LABEL
Tel: (800)-288-0892  Internet: www.specair.net
26
Indirect Fired Gas Heated Make-Up Air Unit
PRODUCT PARTS LIST
PART NO. DESCRIPTION
986305 OIL COMBUSTION BLOWER LABEL
986315 AGA GAS SERIAL NUMBER NAMEPLATE
986320 BLOWER SERIAL NUMBER NAMEPLATE
986365 767A-301 HSI CERAMIC IGNITOR
986380 50D47-170 HSU SYSTEM MODULE
986325 WARNING “FOR YOUR SAFETY” LABEL
986330 AIR MOVEMENT L. ASSN. LABEL
986360 F115-0099 HSI SYSTEM HARNESS
986378 OWNERS BLOWER MANUAL
986381 50E47-160 HSI IGNITION MODULE
986573 ARES NAMEPLATE 5” X 1-1 1/2"
986575 ND3324 3/8"-16 WELD NUT
986590 #47 1/8NPT #2052 ORIFICE
986595 #49 1/8 NPT #2052 ORIFICE
986600 BLANK 1/8NPT #2052 ORIFICE
986605 Y45-AA-2 W/PLATE POTENTOMETER
986610 1400 PROPIPE MANFILD PIPE
986615 1225 PROPIDE MANIFOLD PIPE
986625 3/4" X 1-1/2" BLACK NIPPLE
986628 3/4" X 5" BLACK NIPPLE
986630 3/4" X 7" BLACK NIPPLE
986635 134-201-02-101 24V ESSEX RELAY
986725 760-426 HSI FLAME SENSOR
986840 CSL-503 SILICONE SEALANT
986845 FS60-84 TRI-DELTA PROVE SWITCH
986850 60T11-312891LIMIT SWITCH
986860 2FA53-73 SPST “ON/OFF” SWITCH
986875 A28AK-2 2 STAGE THERMOSTAT
986877 A1911F-21 1 STAGE THERMOSTAT
986880 A19EAF 1 STAGE THERMOSTAT
986881 T991A1269 PROP. DUCT THERMOSTAT
986885 1 KVA TRANSFORMER – 208V TO 120V
986887 1.5 KVA TRANSFORMER – 230V/460V TO 120V
986890 1 KVA TRANSFORMER – 230V/460V TO 120V
986892 1.5 KVA TRANSFORMER – 208V TO 120V
986896 50321 MARS TRANSFORMER 75VA
986920 VLV 36C76-417 2 STAGE NAT GAS
986921 36D130405 2 STAGE NAT VALVE
986930 36C68-445 1 STAGE NAT VALVE
986950 MR610 3/4 X 3/4 MAXITROL VALVE
986960 7063-7619 FASCO POWER VENTOR
988400 WIRE 18 GA MTW WHITE STRANDED
987490 HOOD R/A RAIN HOOD-ASSEMBLY
987525 PHL R/A SOLID-ASSEMBLY
990245 5/8 X 1/4" 50' NEOPRENE GASKET
990255 1709 ARES, MYLAR W/ADHESIVE VK
990805 1992 DPST TOGGLE SWITCH
Tel: (800)-288-0892  Internet: www.specair.net
27
Indirect Fired Gas Heated Make-Up Air Unit
Service and Ordering Information
1. ORDERING
For prompt and accurate handling of your order, always include: (See Owner’s Registration Reference
Sheet Page 30)
a. Serial number on unit part
b. Model number of unit
c. Part number
d. Part name
e. Voltage
f. Owner and property location
g. Date installed (See Owner Registration in the back of this manual)
Shipment may be delayed without proper information.
If unit is in warranty, replacement part will be billed and shipped. Credit will be issued when the part in
question is returned, inspected and found defective under normal usage (call the Service Department
at ARES® for instructions).
2. TERMS AND CONDITIONS
Price changes: All prices will be shipped C.O.D. for customers without an open account.
Returns: Written authority must be obtained before returning any merchandise. All returned
merchandise must be shipped prepaid and is subject to a handling charge.
Damaged merchandise: Notify the carrier in the event of damaged shipments, whether apparent at the
time of delivery or concealed damage is discovered after unpacking. File your complaint with the
carrier, not the factory. ARES’ responsibility ceases when shipment is accepted by a reliable carrier for
delivery.
Taxes: Any taxes or other government charge upon production, sale and/or shipment of merchandise
sold hereunder, not imposed by Federal, State, or Municipal authorities, or hereafter becoming
effective, shall be added to the price herein provided, and shall be paid by the buyer.
ALL SHIPMENTS F.O.B., ANTHONY, NEW MEXICO
TO ORDER PARTS OR OBTAIN SERVICE INFORMATION, CONTACT:
ARES®, A Division of Spec-Air
6850 McNutt Road
Anthony, NM 88021
Phone: (800) 288-0892
Fax: (575) 589-2398
Tel: (800)-288-0892  Internet: www.specair.net
28
Indirect Fired Gas Heated Make-Up Air Unit
Limited Warranty
Duct Furnaces for Gas
Model No.:_____________________________Serial No.:_________________________________
Voltage:_______________________________Type of Gas: _______________________________
Date Installation Completed: ____________________________________
ARES® extends this warranty to the original owner of this duct furnace providing it is installed according
to factory instructions, the warranty card is completely filled out and returned to the factory, and the unit
is used under normal conditions.
Length and Coverage of Warranty
The manufacturer will provide free replacement for any part which fails as a result of a defect in
material or manufacturer’s workmanship during the first year after the date of installation (or 18 months
from date of shipment; whichever comes first). The cost of labor and transportation is not included in
this offer. The gas heat exchanger only is warranted to be free from manufacturing defects under
normal use and service for a period of five years following date of original installation. The factory will
exchange the heat exchanger if it is received freight prepaid at the factory, 6850 McNutt Road,
Anthony, NM 88021, and if found upon examination by the factory to be defective due to faulty
material or factory workmanship. It is the responsibility of the owner to arrive at an agreement with a
service organization to repair and/or supply the heat exchanger furnished by the manufacturer under
this plan.
Exemptions of Warranty Coverage
A. The manufacturer is not responsible for any damage not caused by a defect in material or
workmanship. This includes, but is not limited to misuse, abuse, improper installation and
transportation or handling charge.
B. The manufacturer is not responsible for any consequential damage resulting from any malfunction.
Some states do not allow the exclusion of consequential damages so the above limitation or
exclusion may not apply to you.
C. The manufacturer is not responsible for the cost of labor and transportation that may be required to
replace the parts covered in Section I of this warranty.
D. Alteration or disassembly of unit or any rewiring other than factory recommended wiring voids this
warranty.
Obtaining Warranty Service
Please contact installing contractor, servicing contractor and/or the selling agency from whom you
purchased the unit. If you cannot locate them, contact ARES®, 6850 McNutt Road, Anthony, NM
88021. Phone: (800) 288-0892; fax: (575) 589-2398 or by email at; aresinfo@specair.net.
What to do in case of unsatisfactory warranty service.
Please write the ARES® Service Department. Include your name, address and zip code, name of
agency from whom unit was purchased, the model and serial number, date of purchase and a
description of the problem.
Any warranty that may be implied from this purchase is hereby limited to the one year duration of this
warranty. Some states do not allow limitations on how long an implied warranty lasts, so the above
limitation may be apply for you.
This warranty gives you specific legal rights, and you may also have rights which may vary from state
to state.
Parts may be ordered from the ARES Service Dept. by contacting by phone at (800) 288-0892. You
may also contact us by fax at (575) 589-2398 or by email at aresinfo@specair.net.
Tel: (800)-288-0892  Internet: www.specair.net
29
Indirect Fired Gas Heated Make-Up Air Unit
OWNER REGISTRATION
REFERENCE SHEET
For
Packaged Make-up Air Units
(fill out at time of installation)
DO NOT REMOVE FROM THIS MANUAL
Model No.__________________________ Serial No. _______________________
Customer’s Name____________________________________________________
Address____________________________________________________________
Installer’s Name _____________________________________________________
Address____________________________________________________________
Installed at _________________________________________________________
Installation Date _____________________________________________________
Remarks ___________________________________________________________
___________________________________________________________________
___________________________________________________________________
___________________________________________________________________
6850 McNutt Road, Anthony, NM 88021
Tel: (800)-288-0892 • (575)-589-6200 • Fax (575)-589-2398
Internet: www.specair.net • Email: aresinfo@specair.net
Tel: (800)-288-0892  Internet: www.specair.net
30
Indirect Fired Gas Heated Make-Up Air Unit
Warranty Registration
This sheet should be filled in and mailed to the factory within 15 days following
installation.
Owner: __________________________________________________________________________
Address:_________________________________________________________________________
Phone: __________________________________________________________________________
Installer: _________________________________________________________________________
Address:_________________________________________________________________________
Phone: __________________________________________________________________________
In Service Date: ___________________________________________________________________
SUPPLY
Model: ______________________________________________
Serial No.: ___________________________________________
Belt Size: ____________________________________________
Drive Pulley Size: _____________________________________
Wheel Pulley Size: ____________________________________
Motor HP: ___________________________________________
Voltage: _____________________________________________
Phase: ______________________________________________
Fuse Size: ___________________________________________
Overload Setting: _____________________________________
Motor Amps RTD: _____________________________________
Actual: ______________________________________________
Are belts aligned properly
Are set screws and locking collars tight
Unusual wheel alignment or vibration
Is heat exchanger working properly
Are Evap. pads working properly
Are unit bases properly installed
System operational without further adjustment
Yes
Yes
Yes
Yes
Yes
Yes
Yes
______
______
______
______
______
______
______
No _______
No _______
No _______
No _______
No _______
No _______
No _______
System requires following corrections:__________________________________________________
________________________________________________________________________________
________________________________________________________________________________
________________________________________________________________________________
System demonstrated to
____________________________________
____________________________________
____________________________________
Tel: (800)-288-0892  Internet: www.specair.net
System inspected by
____________________________________
____________________________________
____________________________________
31
Place
Postage
Here
ARES
6850 McNutt Road
Anthony, NM 88021
ATT: WARRANTY DEPT