Empire Comfort Systems GWT-50-2 User Manual
INSTALLATION INSTRUCTIONS
AND
OWNER'S MANUAL
GRAVITY VENTED
DUAL WALL FURNACE
MODEL
GWT-50-2 (SG, RB)
Installer: Please leave these instructions with
the consumer.
Consumer: Please retain these instructions
for future use.
WARNING: If not installed, operated and
maintained in accordance with the manufacturer's instructions, this product could
expose you to substances in fuel or from
fuel combustion which can cause death or
serious illness.
EFFECTIVE DATE
JANUARY 2004
WARNING: If the information in this
manual is not followed exactly, a Þ re or
explosion may result causing property
damage, personal injury or loss of life.
— Do not store or use gasoline or other ß am-
mable vapors and liquids in the vicinity
of this or any other appliance.
— WHAT TO DO IF YOU SMELL GAS
• Do not try to light any appliance.
• Do not touch any electrical switch; do
not use any phone in your building.
• Immediately call your gas supplier
from a neighbor's phone. Follow the
gas supplier's instructions.
• If you cannot reach your gas supplier,
call the Þ re department.
— Installation and service must be per-
formed by a qualiÞ ed installer, service
agency or the gas supplier.
12426-4-0104 Page 1
TABLE OF CONTENTS
SECTION PAGE
Important Safety Information .................................................................................................3
Safety Information for Users of LP Gas .................................................................................4
Introduction ............................................................................................................................5
SpeciÞ cations .........................................................................................................................5
Recommended Vent ConÞ guration ........................................................................................6
Gas Supply .............................................................................................................................7
Clearances .............................................................................................................................8
Ventilation and Combustion Air .............................................................................................8
Location - All Models ............................................................................................................8
Rough-In Instructions ......................................................................................................... 8-9
Finishing Instructions ....................................................................................................... 9-10
Thermostat Location (SG Models) .......................................................................................11
Lighting Instructions ............................................................................................................12
Vent Safety Shutoff System ..................................................................................................13
Proper Main Burner Flame ...................................................................................................13
Proper Pilot Flame ................................................................................................................13
Troubleshooting ....................................................................................................................14
Parts List ...............................................................................................................................15
How To Order Repair Parts ..................................................................................................15
Parts View ............................................................................................................................16
Remote Bulb Control Installation Instructions .....................................................................17
Optional Blower Installation Instructions ..................................................................... 18-19
Service Notes ........................................................................................................................20
Page 2 12426-4-0104
IMPORTANT SAFETY INFORMATION
THIS IS A HEATING APPLIANCE
DO NOT OPERATE THIS APPLIANCE WITHOUT OUTER CASING INSTALLED.
• Due to high temperatures the appliance should be located
out of trafÞ c and away from furniture and draperies.
• Children and adults should be alerted to the hazards of
high surface temperatures and should stay away to avoid
burns or clothing ignition.
• Young children should be carefully supervised when they
are in the same room as the appliance.
• Clothing or other ß ammable material should not be placed
on or near the appliance.
• Any safety screen or guard removed for servicing an
appliance must be replaced prior to operating the
appliance.
• Keep burner and control compartment clean.
• Installation and repair should be done by a QUALIFIED
SERVICE PERSON. The appliance should be inspected
before use and at least annually by a qualiÞ ed service
person. More frequent cleaning may be required due to
excessive lint from carpeting, bedding materials, etc. It
is imperative that control compartments, burners and
circulating air passageways of the appliance be kept
clean.
• DO NOT put anything around the furnace that will
obstruct the ß ow of combustion and ventilation air.
• DO keep the appliance area clear and free from
combustible material, gasoline and other ß ammable
vapors and liquids.
• DO examine venting system periodically and replace
damaged parts.
• DO make a periodic visual check of pilot and burners.
Clean and replace damaged parts.
• DO NOT use this heater if any part has been under water.
Immediately call a qualiÞ ed service technician to inspect
the heater and to replace any part of the control system
and any gas control which has been under water.
• This furnace must not be connected to a chimney ß ue
serving a separate solid-fuel burning appliance.
12426-4-0104 Page 3
SAFETY INFORMATION FOR USERS OF LP-GAS
Propane (LP-Gas) is a ß ammable gas which can cause Þ res
and explosions. In its natural state, propane is odorless and
colorless. You may not know all the following safety precautions which can protect both you and your family from an
accident. Read them carefully now, then review them point
LP-GAS WARNING ODOR
If a gas leak happens, you should be able to smell the gas because of the odorant put in the LP-Gas.
That's your signal to go into immediate action!
• Do not operate electric switches, light matches, use your
phone. Do not do anything that could ignite the gas.
• Get everyone out of the building, vehicle, trailer, or area.
Do that IMMEDIATELY.
• Close all gas tank or cylinder supply valves.
• LP-Gas is heavier than air and may settle in low areas such
as basements. When you have reason to suspect a gas leak,
keep out of basements and other low areas. Stay out until
Þ reÞ ghters declare them to be safe.
NO ODOR DETECTED - ODOR FADE
Some people cannot smell well. Some people cannot smell the
odor of the chemical put into the gas. You must Þ nd out if
you can smell the odorant in propane. Smoking can decrease
your ability to smell. Being around an odor for a time can affect
your sensitivity or ability to detect that odor. Sometimes other
odors in the area mask the gas odor. People may not smell the
gas odor or their minds are on something else. Thinking about
smelling a gas odor can make it easier to smell.
The odorant in LP-gas is colorless, and it can fade under some
circumstances. For example, if there is an underground leak, the
movement of the gas through soil can Þ lter the odorant. Odorants
in LP-Gas also are subject to oxidation. This fading can occur if
by point with the members of your household. Someday
when there may not be a minute to lose, everyone's safety
will depend on knowing exactly what to do. If, after reading the following information, you feel you still need more
information, please contact your gas supplier.
• Use your neighbor's phone and call a trained LP-Gas service
person and the Þ re department. Even though you may not
continue to smell gas, do not turn on the gas again. Do not
re-enter the building, vehicle, trailer, or area.
• Finally, let the service man and Þ reÞ ghters check for escaped
gas. Have them air out the area before you return. Properly
trained LP-Gas service people should repair the leak, then
check and relight the gas appliance for you.
there is rust inside the storage tank or in iron gas pipes.
The odorant in escaped gas can adsorb or absorb onto or into
walls, masonry and other materials and fabrics in a room. That
will take some of the odorant out of the gas, reducing its odor
intensity.
LP-Gas may stratify in a closed area, and the odor intensity
could vary at different levels. Since it is heavier than air, there
may be more odor at lower levels. Always be sensitive to the
slightest gas odor. If you detect any odor, treat it as a serious
leak. Immediately go into action as instructed earlier.
SOME POINTS TO REMEMBER
• Learn to recognize the odor of LP-gas. Your local LP-Gas
Dealer can give you a "Scratch and Sniff" pamphlet. Use it
to Þ nd out what the propane odor smells like. If you suspect
that your LP-Gas has a weak or abnormal odor, call your
LP-Gas Dealer.
• If you are not qualiÞ ed, do not light pilot lights, perform
service, or make adjustments to appliances on the LP-Gas
system. If you are qualiÞ ed, consciously think about the
odor of LP-Gas prior to and while lighting pilot lights or
performing service or making adjustments.
• Sometimes a basement or a closed-up house has a musty
smell that can cover up the LP-Gas odor. Do not try to light
pilot lights, perform service, or make adjustments in an area
where the conditions are such that you may not detect the
odor if there has been a leak of LP-Gas.
• Odor fade, due to oxidation by rust or adsorption on walls
of new cylinders and tanks, is possible. Therefore, people
should be particularly alert and careful when new tanks or
cylinders are placed in service. Odor fade can occur in new
tanks, or reinstalled old tanks, if they are Þ lled and allowed
Page 4 12426-4-0104
to set too long before reÞ lling. Cylinders and tanks which
have been out of service for a time may develop internal rust
which will cause odor fade. If such conditions are suspected
to exist, a periodic sniff test of the gas is advisable. If you
have any question about the gas odor, call your LP-gas
dealer. A periodic sniff test of the LP-gas is a good safety
measure under any condition.
• If, at any time, you do not smell the LP-Gas odorant and you
think you should, assume you have a leak. Then take the same
immediate action recommended above for the occasion when
you do detect the odorized LP-Gas.
• If you experience a complete "gas out," (the container is under no vapor pressure), turn the tank valve off immediately.
If the container valve is left on, the container may draw in
some air through openings such as pilot light oriÞ ces. If this
occurs, some new internal rusting could occur. If the valve is
left open, then treat the container as a new tank. Always be
sure your container is under vapor pressure by turning it off
at the container before it goes completely empty or having
it reÞ lled before it is completely empty.
INTRODUCTION
Introduction
Vented wall furnace is shipped ready to install in a 2" x 4" stud
wall, with studs 16" (406mm) center to center. Always consult
your local Building Department regarding regulations, codes
or ordinances which apply to the installation of a vented wall
furnace.
Instructions to Installer
1. Installer must leave instruction manual with owner after
installation.
2. Installer must have owner Þ ll out and mail warranty card
supplied with furnace.
3. Installer should show owner how to start and operate furnace
and thermostat.
Warning:
Any change to this furnace or its control can be dangerous.
This is a heating appliance and any panel, door or guard
removed for servicing an appliance must be replaced prior
to operating the appliance.
General Information
This series is design certiÞ ed in accordance with American National
Standard / CSA Standard Z21.86 and CSA 2.32 by the Canadian
Standards Association, as a Vented Wall Furnace and must be
installed according to these instructions.
Any alteration of the original design, installed other than
as shown in these instructions or use with a type of gas not
shown on the rating plate is the responsibility of the person
and company making the change.
Important
All correspondence should refer to complete Model No., Serial
No. and type of gas.
Notice: During initial Þ ring of this furnace, its paint will bake
out and smoke will occur. To prevent triggering of smoke alarms,
ventilate the room in which the furnace is installed.
Installation in Residential Garages
Gas utilization equipment in residential garages shall be installed
so that all burners and burner ignition devices are located not less
than 18" (457mm) above the ß oor.
Such equipment shall be located, or protected, so it is not subject
to physical damage by a moving vehicle.
QualiÞ ed Installing Agency
Installation and replacement of gas piping, gas utilization equipment
or accessories and repair and servicing of equipment shall be
performed only by a qualiÞ ed agency. The term "qualiÞ ed
agency" means any individual, Þ rm, corporation or company
which either in person or through a representative is engaged in
and is responsible for (a) the installation or replacement of gas
piping or (b) the connection, installation, repair or servicing of
equipment, who is experienced in such work, familiar with all
precautions required and has complied with all the requirements
of the authority having jurisdiction.
State of Massachusetts: The installation must be made by
a licensed plumber or gas Þ tter in the Commonwealth of
Massachusetts.
The installation must conform to local codes or, in the absence of
local codes, with the National Fuel Gas Code ANSI Z223.1/NFPA
54* Natural Gas and Propane Installation Code, CSA B149.1.
*Available from the American National Standards Institute, Inc., 11 West 42nd
St., New York, N.Y. 10036.
High Altitudes
For altitudes/elevations above 2,000 feet (610m), input ratings
should be reduced at the rate of 4 percent for each 1,000 (305m)
feet above sea level. Canadian High Altitudes for locations having
an elevation above mean sea level between 2,000 feet (610m) and
4,500 feet (1370m), the manifold pressure is to be decreased from
3.5" w.c. (.871kPa) to 3.0" w.c. (.747kPa) for Natural Gas and from
10.0" w.c. (2.49kPa) to 8.0" w.c. (1.992kPa) for Propane Gas.
SPECIFICATIONS
Model GWT-50
Input BTU/HR (KW/H) 50,000 (14.7)
Height 66 1/8" (168cm)
Width 16" (406mm)
Depth (Out of wall) 6" (152mm)
Gas Inlet Pipe 1/2"
Vent Pipe Type B Oval 4" (102mm)
Accessory
Blower Package GWTB-2
GWT-50 (SG, RB) is a DUAL WALL Furnace. Warmed air is discharged into two rooms which share a common wall.
12426-4-0104 Page 5
RECOMMENDED VENT CONFIGURATION
Note: No vent equipment supplied with furnace.
4" Oval (all parts purchase locally)
1. Type B-1 oval pipe
2. Single story type B-1 gas vents require a baseplate and one pair of
ceiling plate spacers.
3. Multi-story type B-1 gas vents require a baseplate, one pair of ceiling
plate spacers at the Þ rst ß oor ceiling and one pair of Þ re stop spacers
at each successive ceiling level.
Type B-W gas vent pipe is available for single story or multistory installations. Type B-W gas vent pipe is to be used with the
Listed base plate, ceiling plate spacers and Þ re stop spacers.
Insulated Vent Enclosure
Gravity vented wall furnaces installed in buildings with ß at roofs can have
poor venting. The cold vent pipe will have a delay in proper venting and
cause the wall furnace to shut "off" by the vent safety switch. To prevent
delayed venting as well as condensation of ß ue products an insulated vent
enclosure is recommended.
Use Type B vent pipe and maintain at least a one inch (25mm) clearance
to combustibles.
Use metal thimble to protect vent pipe as it passes through combustibles.
Baseplate Gasket is factory installed on header. Baseplate attaches to header
with screws. B-vent snaps into and is attached to baseplate. Minimum
height of vent pipe must be six feet (1.8m) above header.
Stud space around gas vents must be free of obstructions and building
paper.
Uninsulated Single-Wall Metal Pipe shall not be used outdoors in cold
climates for venting gas utilization equipment.
Attention: The main burner uses room air for combustion. As the gas/air
mixture is injected into the main burner, there is also the ß ow of dust and
lint particles into the main burner.
Dust and lint accumulation inside the main burner will result in a yellow
main burner ß ame and possible sooting inside the combustion chamber
and vent pipe. To clean main burner refer to Page 13, "Proper Main Burner
Flame."
Page 6 12426-4-0104
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