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ENERAL

WARNING

T

O PREVENT POSSIBLE EQUIPMENT DAMAGE, PROPERTY DAMAGE, PERSONAL

INJURY OR DEATH, THE FOLLOWING BULLET POINTS MUST BE OBSERVED

WHEN INSTALLING THE UNIT.

Follow the instructions listed below when selecting a furnace loca-
tion.  Refer also to the guidelines provided in 

Section V, Combus-

tion and Ventilation Air Requirements.

Centrally locate the furnace with respect to the proposed
or existing air distribution system.

Ensure the temperature of the return air entering the
furnace is between 55°F and 100°F when the furnace is
heating.

Provide provisions for venting combustion products
outdoors through a proper venting system.  Special
consideration should be given to vent/flue pipe routing
and combustion air intake pipe when applicable.  Refer
to 

Section IX, Vent/Flue Pipe and Combustion Air Pipe -

Termination Locations 

for appropriate termination

locations and to determine if the piping system from
furnace to termination can be accomplished within the
guidelines given.  

NOTE:

  The length of flue and/or

combustion air piping can be a limiting factor in the
location of the furnace.

Locate the furnace so condensate flows downwards to
the drain.  Do not locate the furnace or its condensate
drainage system in any area subject to below freezing
temperatures without proper freeze protection. Refer to

Section X, Condensate Drain Lines and Trap

 for further

details.

Ensure adequate combustion air is available for the
furnace.  Improper or insufficient combustion air can
expose building occupants to gas combustion products
that could include carbon monoxide.  Refer to 

Section V,

Combustion and Ventilation Air Requirements.

Set the furnace on a level floor to enable proper
condensate drainage.  If the floor becomes wet or damp
at times, place the furnace above the floor on a concrete
base sized approximately 1-1/2" larger than the base of
the furnace.  Refer to the 

Section VII, Horizontal

Applications and Considerations

 for leveling of horizontal

furnaces.

Ensure upflow or horizontal furnaces are not installed
directly on carpeting, or any other combustible material.
The only combustible material allowed is wood.

A special accessory subbase must be used for upright
counterflow unit installations over any combustible
material (including wood).  Refer to subbase instructions
for installation details.  (NOTE: A subbase will not be
required if an air conditioning coil is located beneath the
furnace between the supply air opening and the
combustible floor.

Exposure to contaminated combustion air will result in
safety and performance-related problems.  Do not install
the furnace where the combustion air is exposed to the
following substances:

chlorinated waxes or cleaners
chlorine-based swimming pool chemicals
water softening chemicals
deicing salts or chemicals
carbon tetrachloride

NOTE:

 Do not connect the temporary duct directly to the

furnace. The duct must be sized according to the
instructions under 

Section V, Combustion and Ventilation

Air Requirements, Section 5.3.3.

The furnace heat exchanger, components, duct system,
air filters and evaporator coils are thoroughly cleaned
following final construction clean up.

All furnace operating conditions (including ignition, input
rate, temperature rise and venting) are verified according
to these installation instructions.

NOTE: 

The Commonwealth of Massachusetts requires that the

following additional requirements must also be met:

Gas furnaces must be installed by a licensed plumber or
gas fitter.

A T-handle gas cock must be used.

If the unit is to be installed in an attic, the passageway to
and the service area around the unit must have flooring.

To ensure proper installation and operation, thoroughly read this
manual for specifics pertaining to the installation and application
of this product.

WARNING

P

OSSIBLE PROPERTY DAMAGE, PERSONAL INJURY OR DEATH DUE TO FIRE,

EXPLOSION, SMOKE, SOOT, CONDENSTAION, ELECTRICAL SHOCK OR CARBON

MONOXIDE MAY RESULT FROM IMPROPER INSTALLATION, REPAIR, OPERATION,

OR MAINTENANCE OF THIS PRODUCT.

WARNING

T

O PREVENT PROPERTY DAMAGE, PERSONAL INJURY OR DEATH DUE TO FIRE,

DO NOT INSTALL THIS FURNACE IN A MOBILE HOME, TRAILER, OR RECREATIONAL

VEHICLE.

To ensure proper furnace operation, install, operate and maintain
the furnace in accordance with these installation and operation
instructions, all local building codes and ordinances.  In their ab-
sence, follow the latest edition of the National Fuel Gas Code
(NFPA 54/ANSI Z223.1), and/or CAN/CSA B149 Installation Codes,
local plumbing or waste water codes, and other applicable codes.
A copy of the National Fuel Gas Code (NFPA 54/ANSI Z223.1) can
be obtained from any of the following:

American National Standards Institute
1430 Broadway
New York,  NY  10018

National Fire Protection Association
1 Batterymarch Park
Quincy, MA  02269

CSA International
8501 East Pleasant Valley
Cleveland, OH 44131

A copy of the CAN/CSA B149 Installation Codes can also be ob-
tained from:

CSA International
178 Rexdale Boulevard
Etobicoke, Ontario, Canada M9W 1R3

The rated heating capacity of the furnace should be greater than or
equal to the total heat loss of the area to be heated.  The total heat
loss should be calculated by an approved method or in accor-
dance with “ASHRAE Guide” or “Manual J-Load Calculations” pub-
lished by the Air Conditioning Contractors of America.

Summary of Contents for GMS95

Page 1: ...f in a position which is more hazardous than when the unit is in operation Remember it is your responsibility to install the product safely and to know it well enough to be able to instruct a customer...

Page 2: ...ROPER VENT FLUE AND COMBUSTION AIR PIPING PRACTICES 13 TERMINATION LOCATIONS 13 CANADIAN VENTING REQUIREMENTS 14 STANDARD FURNACE CONNECTIONS 14 ALTERNATE FURNACE CONNECTIONS 14 NON DIRECT VENT SINGLE...

Page 3: ...afety Circuit Description 31 GENERAL 31 INTEGRATED CONTROL MODULE 31 PRIMARY LIMIT 31 AUXILIARY LIMIT 31 ROLLOUT LIMIT 31 PRESSURE SWITCHES 31 FLAME SENSOR 31 XVIII Troubleshooting 31 ELECTROSTATIC DI...

Page 4: ...warranty certificate is also supplied with the unit Read the warranty carefully and note what is covered Keep the warranty cer tificate in a safe location for future reference If additional informatio...

Page 5: ...lectrical Connection Inlets Alternate 19 Coil Front Cover Pressure Tap 20 Coil Front Cover Drain Port 21 Drain Line Penetrations 22 Drain Trap 23 Blower Door Interlock Switch 24 Capacitor 25 Integrate...

Page 6: ...are set per the furnace rating plate The input rate and temperature rise are set per the furnace rating plate 100 outside air is provided for combustion air requirements during construction Temporary...

Page 7: ...ly air opening and the combustible floor Exposure to contaminated combustion air will result in safety and performance related problems Do not install the furnace where the combustion air is exposed t...

Page 8: ...g system properly vents when tested as outlined above re turn doors windows exhaust fans fireplace dampers and any other gas burning appliance to their previous conditions of use halogen type refriger...

Page 9: ...input rating of all appliances installed in that space Rooms communicating directly with the space in which the appliances are installed through openings not furnished with doors are considered a par...

Page 10: ...nsion of rectangular air ducts shall not be less than 3 inches ing shall have a minimum free area of 1 square inch per 1 000 BTU per hour of the total input rating of all gas utilization equipment in...

Page 11: ...tallation Positions figure for appropriate in stallation positions ductwork connections and resulting airflow arrangements VII HO VII HO VII HO VII HO VII HORIZO RIZO RIZO RIZO RIZONT NT NT NT NTAL AP...

Page 12: ...ane gas installations require an orifice change to compensate for the energy content difference between natural and propane gas High altitude installations may require both a pressure switch and an or...

Page 13: ...nt flue pipe and a combustion air intake pipe Refer to the appropriate section for details concerning piping size length number of elbows furnace connections and terminations MATERIALS AND JOINING MET...

Page 14: ...DIRECT VENT INSTALLATIONS On upflow units secure the combustion air intake pipe directly to the air intake coupling On counterflow units secure the combus tion air intake pipe to the air intake coupl...

Page 15: ...ue piping to the rubber elbow using a worm gear hose clamp NOTE Use of the alternate vent flue location for upright installations requires the drain trap be installed on the same side of the unit as t...

Page 16: ...ould be in stalled on either side of the wall and solvent cemented to a length of pipe connecting the two couplings The length of pipe should be the wall thickness plus the depth of the socket fitting...

Page 17: ...s in each Vent Flue Combustion Air Intake pipe Elbows and or tees used in the terminations must be included when determining the number of elbows in the piping systems If the combustion air intake pip...

Page 18: ...es If the pipes must go below the joist and then up into the last joist space to penetrate the header two 45 elbows should be used to reach the header rather than two 90 elbows VENT INTAKE TERMINATION...

Page 19: ...t installations using the standard vent flue outlet require drain hoses to be connected as follows The following quantity of hoses tubes and hose clamps are provided with the unit HOSE A QTY 1 HOSE B...

Page 20: ...flow models relocation of the front cover pressure switch hose is required Make connections as follows 1 Remove the rubber plug from the coil front cover drain port Counterflow furnaces Relocate the f...

Page 21: ...is an integral part of this furnace Field alter ation to comply with electrical codes should not be required Wires are color coded for identification purposes Refer to the wiring diagram for wire rout...

Page 22: ...at 120 VAC Turn OFF power to the furnace before installing any accessories Follow the humidifier or air cleaner manufacturers instructions for locating mounting grounding and controlling these access...

Page 23: ...field convertible for use with propane gas by replacing the regulator spring with a propane gas spring from an appropriate manufacturer s propane gas conversion kit Taps for measuring the gas supply p...

Page 24: ...rotect against external corrosion when in contact with masonry plaster or insulation or subjected to repeated wetting by liquids such as water except rain water detergents or sewage MANUAL SHUT OFF VA...

Page 25: ...nace manifold with all gas appliances in operation Maintaining proper gas pressure depends on three main factors 1 Vaporization rate depending on temperature of the liquid and wetted surface area of t...

Page 26: ...the dampers or other means used to control the flow of air must be adequate to prevent chilled air from entering the furnace and if manually operated must be equipped with means to prevent operation...

Page 27: ...nace is equipped with an ignition device which automatically lights the burner Do not try to light the burner by hand 5 Move the furnace gas valve manual control to the OFF position 6 Wait five minute...

Page 28: ...soap suds check for leaks at hose connection Bubbles forming indicate a leak SHUTOFF GASAND FIXALLLEAKS IMMEDIATELY BEFORE PROCEEDING TO NEXT STEP 6 Measure furnace gas supply pressure Supply pressure...

Page 29: ...uals the installation s gas heating value multiplied with a conversion factor hours to seconds divided by the number of seconds per cubic foot The measured input must not be greater than the input ind...

Page 30: ...sensed Circulator blower is energized on heat speed following a fixed thirty second blower on delay Electronic air cleaner terminals are energized with circulator blower Furnace runs integrated contro...

Page 31: ...DISCHARGE ESD PRECAUTIONS NOTE Discharge body s static electricity before touching unit An electrostatic discharge can adversely affect electrical components Use the following precautions during furna...

Page 32: ...e filter s by reversing the procedure for removal 4 Turn ON electrical power to furnace MEDIA AIR FILTER OR ELECTRONIC AIR CLEANER REMOVAL Follow the manufacturer s directions for service BURNERS Visu...

Page 33: ...he blower until filter clears bottom rail 5 Lower filter down and pull outward Front of Furnace Blower Front of Furnace Blower 6 Replace filter by reversing procedure X X X X XXI BEFO XI BEFO XI BEFO...

Page 34: ...34...

Page 35: ...kage proper length elbows and termination Check drain system Correct as necessary Correct pressure switch setpoint or contact motion Tighten or correct wiring connection Pressure switch hose blocked p...

Page 36: ...e sensor with emery clot See Vent Flue Pipe section for piping details See rating plate for proper gas pressure 7 7 FLASHES Flame sensor is coated oxidized Flame sensor incorrectly positioned in burne...

Page 37: ...OSTAT CONNECTIONS BU GN GND 115 VAC 24 VAC BLOWER COMPARTMENT DOOR SWITCH OPEN WHEN DOOR OPEN DOOR SWITCH WARNING DISCONNECT POWERBEFORE SERVICING WIRING TOUNITMUST BE PROPERLYPOLARIZED AND GROUNDED B...

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