ECR International GTM Series Guide

29785 R3 3/10/2004
USER’S INFORMATION
MANUAL
THESE INSTRUCTIONS
APPLY TO THE
MODEL GTM SERIES GAS-
FIRED WARM AIR
FURNACE.
ð Do not store or use gasoline or other flamma-
ble vapors and liquids in the vicinity of this or
any other appliance.
ð 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.
· Leave the building immediately.
· 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
fire department.
ð Installation and service must be performed by
a qualified installer, service agency or the gas
supplier.
DO NOT DESTROY THIS MANUAL
Please read this manual completely and keep in a safe place for
future reference.
This symbol indicates important Safety Related Information
FIRE OR EXPLOSION HAZARD
Failure to follow safety warnings exactl
y
could result in serious injury death o
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29785 R3 3/10/2004
IMPORTANT:
READ THESE INSTRUCTIONS
THOROUGHLY BEFORE
ATTEMPTING TO OPERATE THIS
FURNACE.
This furnace has been designed to
deliver many years of efficient, de-
pendable service. With regular mainte-
nance, some of which requires the
attention of a qualified installer, service
agency or gas supplier, some of which
you may do yourself, the furnace will
operate satisfactorily over many heat-
ing seasons.
Please read this manual to familiarize
yourself with safety procedures, opera-
tion, and routine maintenance proce-
dures.
Figure 1 is provided to help identify the
components of your furnace.
IMPROPER INSTALLATION,
ADJUSTMENT, ALTERATION,
SERVICE OR MAINTENANCE CAN
CAUSE PROPERTY DAMAGE,
PERSONAL INJURY OR DEATH
FOR ASSISTANCE OR ADDITIONAL INFOR-
MATION, CONSULT A QUALIFIED INSTALLER,
SERVICE AGENCY, OR YOUR GAS SUPPLIER.
DEVICES ATTACHED TO EITHER
THE VENT OR COMBUSTION AIR
INTAKE FOR THE PURPOSES OF
EXCEEDING THE LIMITATIONS
DESCIBED IN THE INSTALLATION
MANUAL, INCLUDING FIELD
INSTALLED INDUCED BLOWER
FANS HAVE NOT BEEN TESTED
AND ARE NOT INCLUDED IN THE
DESIGN CERTIFICATION OF THE
FURNACE.
WE, THE MANUFACTURER
CANNOT AND WILL NOT
SPECULATE ON THE EFFECTS OF
SUCH MODIFICATIONS, AND
CANNOT AND WILL NOT BE
RESPONSIBLE FOR INJURY OR
DAMAGE CAUSED BY THE USE OF
SUCH UNTESTED AND/OR
UNCERTIFIED DEVICES,
ACCESSORIES OR COMPONENTS.
Most natural gas systems and all LP
gas systems have a service regulator
located near the point where the gas
piping enters the building.
The propane tank will normally have an
additional first stage regulator located
at the tank outlet valve. All of these
regulators (located outdoors) will have
a vent; see Fig. 2.
It is important for these vents to remain
clear. Do not allow moisture, which
could freeze, to build up in the vent. If
you see moisture building up in the
regulator vent, contact your gas sup-
plier.
SAFETY ISSUES
Figure 1 - FURNACE COMPONENTS
1. Vent Box
2. Pressure Switch
3. Induced Blower
4. Limit Switch (Hidden – behind gas valve)
5. Gas Valve
6. Roll-Out Switch
7. Igniter
8. Flame Sensor
9. Roll-Out Switch
10. Burners
11. Control Box
12. Door Switch
13. Junction Box
14. Blower
· Transformer
· Fan Timer Board
· Motor Capacitor

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29785 R3 3/10/2004
FIGURE 2: GAS REGULATOR VENT
OBSTRUCTION OF THE AIR VENT
ON AN LP (PROPANE) CYLINDER
OR TANK REGULATOR CAN CAUSE
EXPLOSION OR FIRE RESULTING IN
PROPERTY DAMAGE, SEVERE
PERSONAL INJURY OR DEATH.
Your gas supplier should periodically
inspect and clean the air vent screen to
prevent any obstruction. Keep the pro-
tective regulator cover in place, as ex-
posure to the elements can cause ice
buildup and a regulator failure.
GENERAL SAFETY RULES
1. Combustible materials should not
be stored against or around the
furnace. Keep the furnace area
clear and free from all combustible
materials such as newspapers,
rags, cardboard, clothing, etc. This
applies especially to gasoline and
other flammable vapors and liq-
uids.
2. A furnace needs adequate
amounts of combustion and venti-
lation air to operate properly. Do
not block or obstruct air openings
on the furnace, or air openings
supplying combustion or ventila-
tion air to the area where the fur-
nace is installed. There are many
areas from which your furnace
could be receiving combustion and
ventilation air including from within
the heated area (inside air), from
outdoors, from an attic or crawl
space. If renovations are done, be
sure that air supply openings are
not inadvertently covered over with
insulation, vapor barrier, or similar
construction material.
3. All doors and panels must be in
place during normal furnace op-
eration. Attempting to operate the
furnace with missing doors or
panels could lead to the creation
of carbon monoxide gas.
4. If the furnace is installed in a con-
fined space or if you intend to build
a furnace room where insulation is
present, be aware that some insu-
lating materials are combustible.
Do not allow building insulating
materials to come into contact with
the furnace.
5. Any additions, alterations or con-
versions required in order for the
furnace to properly match the ap-
plication requirements must be
done by a qualified installation
contractor, service agency or gas
supplier, using factory specified or
approved parts.
6. Familiarize yourself with the loca-
tion of the furnace gas manual
shut-off valve and any electrical
switches, fuse or circuit breaker
associated with the furnace.
7. For your protection, the furnace is
equipped with manually reset
flame roll-out switches. If either
switch trips frequently, do not ig-
nore this, call your installation con-
tractor, service agency or gas
supplier.
8. Should the gas supply fail to shut
off or if overheating occurs, shut
off the gas valve to the furnace be-
fore shutting off the electrical sup-
ply.
9. Do not use this furnace if any part
has been under water. A flood-
damaged furnace is extremely
dangerous. Attempts to use the
furnace can result in fire or explo-
sion. A qualified service agency
should be contacted to inspect the
furnace and to replace all gas con-
trols, control system parts, electri-
cal parts that have been wet or the
furnace if deemed necessary.
10. Familiarize yourself with the loca-
tion of your furnace filter or filters.
A blocked air filter will reduce effi-
ciency, increase fuel consumption,
raise the furnace operating tem-
perature, and shorten the life of
furnace components.
11. Do not cover return air grills and
supply air registers with drapes,
curtains, throw rugs, etc.
12. Avoid shutting off supply air regis-
ters in the interests of saving heat.
The furnace requires a sufficient
quantity of air passing over the
heat exchanger to operate within
design temperatures, (system
temperature rise). Reducing the
availability of supply air registers
may have the unforeseen conse-
quence of raising the furnace op-
erating temperature above design,
thereby reducing furnace effi-
ciency, and shortening the life of
the furnace components.
Regulator Vent
Keep free of ice,
snow and debris.

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29785 R3 3/10/2004
During the heating season, the opera-
tion of the furnace is fully automatic.
TO START THE FURNACE:
1. First read these instructions and
safety notices thoroughly.
2. Set the thermostat to the lowest
setting.
3. Ensure that all supply air registers
and return air grilles are open.
4. Turn off the electric power to the
furnace.
5. Remove the burner access door.
6. Ensure that the appliance manual
shut-off valve is in the “ON” posi-
tion. The valve handle is normally
in-line with the gas pipe and valve
body when it is in the “ON” posi-
tion; perpendicular to the gas pip-
ing and valve body when it is in
the “OFF” position.
7. Honeywell gas valve: no action
required. White-Rodgers gas
valve: turn the manual gas control
knob to the “OFF” position (see
Fig. 5).
8. Wait 5 minutes to clear out any
gas. If, after this time you smell
gas, STOP. Turn the appliance
manual shut-off valve to the “OFF”
position. If burning propane or
other LP gas, smell for gas near
the floor since propane and butane
are both heavier than air. If after
this time you do not smell gas,
continue to the next step.
9. Honeywell gas valve: Ensure that
the “Ignition System Control
Switch” is in the “ON” position (see
Fig. 4). White-Rodgers gas valve:
turn the manual gas control knob
to the “ON” position.
NEVER USE TOOLS TO TURN THE
MANUAL GAS CONTROL KNOB. IF
THE CONTROL KNOB WILL NOT
TURN BY HAND, DO NOT ATTEMPT
TO FORCE IT. DOING SO COULD
RESULT IN FIRE OR EXPLOSION
RESULTING IN SERIOUS
PERSONAL INJURY OR DEATH, OR
PROPERTY DAMAGE. CALL A
QUALIFIED INSTALLATION
CONTRACTOR, SERVICE AGENCY
OR GAS SUPPLIER.
10. Replace the burner access door,
ensuring that it is properly in place.
11. Restore the electric power to the
furnace.
12. Adjust the thermostat to the de-
sired setting. If the thermostat also
controls an air conditioning sys-
tem, ensure that the thermostat
system switch is in the “HEAT” or
“AUTO” mode.
If this is the first time that the furnace
has undergone a trial ignition since
installation, or if there has been work
done on the gas lines, the furnace
might not light because of air trapped
in the gas supply line.
Simply turn the thermostat down to its
lowest setting, wait 5 minutes, then
adjust the thermostat to the desired
setting. If the problem persists, pro-
ceed to the Furnace Shut-Down Pro-
cedure and call your installer, service
agency or gas supplier.
FURNACE SHUT-DOWN
PROCEDURE
1. Set the thermostat to its lowest
setting.
2. Shut off electric power to the fur-
nace.
3. Turn the appliance manual shut-off
valve to the “OFF” position.
4. If your furnace is equipped with
the White-Rodgers gas valve, re-
move the burner access door, turn
the manual gas control knob to the
“OFF” position, then re-install the
burner access door.
If you intend to be away from home for
lengthy periods of time during the non-
heating season, it is advisable to follow
the furnace shut down procedure.
FURNACE OPERATION INFORMATION
Figure 3: Honeywell Gas Valve

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29785 R3 3/10/2004
ROUTINE MAINTENANCE BY
HOMEOWNER
AIR FILTER
DO NOT OPERATE YOUR FURNACE (OR AIR
CONDITIONER) FOR EXTENDED PERIODS OF
TIME WITHOUT AN AIR FILTER.
A portion of the dust entrained in the
air may temporarily lodge in the air
duct runs and the supply registers. Any
recirculated dust particles will be
heated and charred by coming into
contact with the heat exchanger. This
residue will soil ceilings, walls, drapes,
carpets, furniture, and other household
articles.
DISCONNECT THE ELECTRICAL
POWER TO THE FURNACE BEFORE
ATTEMPTING ANY MAINTENANCE.
FAILURE TO DO SO MAY CAUSE
ELECTRICAL SHOCK RESULTING IN
SEVERE PERSONAL INJURY OR
DEATH.
The furnace is supplied with a semi-
permanent 16 x 25 x 1 air filter. The
filter medium is synthetic sponge,
which allows for several cleanings be-
fore the filter requires replacement.
REMOVING FILTER
1. Disconnect electrical
power to the furnace.
2. Pull the filter out the
front.
3. Clean or replace the
filter, then re-install
by reversing steps 1
through 3.
FILTER CLEANING
Vacuum the loose dirt
from the filter, then wash
it using a mild detergent
and water. Please handle
carefully. The synthetic
sponge medium can be easily punc-
tured and made unsuitable for air filtra-
tion.
ALLOW THE FILTER TO DRY THOROUGHLY
BEFORE RE-INSTALLATION. NEVER
OPERATE THE CIRCULATING BLOWER WITH A
WET FILTER.
Consult your installation contractor or
service technician if you have any
questions on filters.
Figure 6: Side Positioned Filter
Figure 4: Honeywell Valve Figure 5: White-Rodgers Valve
MAINTENANCE

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29785 R3 3/10/2004
IF CLEANING RATHER THAN REPLACING THE
FILTER, UNLESS THE FILTER IS THOROUGHLY
WASHED AND DRIED, BE SURE THAT THE
FILTER IS RE-INSTALLED WITH THE AIRFLOW
DIRECTION IDENTICAL TO ITS PREVIOUS USE.
REVERSING THE FILTER WILL CAUSE DUST
TRAPPED WITHIN THE FILTER TO BREAK
FREE AND RECIRCULATE WITHIN THE DUCT
SYSTEM.
LUBRICATION
Minimal lubrication is required for your
furnace. The induced blower assembly
motors have sealed bearings. The
bearings contain permanent special
purpose lubricants. Attempting to force
common oil into the induced blower
motor bearings will deteriorate the
original lubricant and shorten bearing
life.
DISCONNECT ELECTRICAL POWER
TO THE FURNACE BEFORE
ATTEMPTING TO LUBRICATE THE
BLOWER MOTOR. FAILURE TO DO
SO COULD RESULT IN SEVERE
PERSONAL INJURY OR DEATH.
The circulating fan may have perma-
nently lubricated ball bearings or
sleeve bearings. If the blower motor is
equipped with sleeve bearings, peri-
odic oiling is required. If the fan motor
runs continuously, the bearings should
be oiled yearly. If the fan runs occa-
sionally, (automatically), the bearings
may be oiled after the second year. 4 -
6 drops of SAE 20 non-detergent oil is
ideal. The oiling ports are normally (but
not necessarily) located on the outside
edge of the motor end bells. The inner
oil port is difficult to reach without a
“tele-spout” or similar type oiler. If you
cannot see an oil port, we recommend
that you leave this part of the mainte-
nance to your service contractor.
DO NOT USE AUTOMOTIVE MOTOR OIL,
HOUSEHOLD OIL, GENERAL-PURPOSE OIL,
ETC. THESE OILS WILL SHORTEN THE LIFE
OF THE MOTOR.
DO NOT OVER-OIL THE ELECTRIC MOTOR.
EXCESS OIL WILL SHORTEN THE LIFE OF THE
MOTOR.
ROUTINE EXAMINATION
It is good practice to give a quick in-
spection of your furnace each time you
inspect or clean the air filter. Things to
check:
· All areas around the vent connec-
tor and chimney should be clear
and free of obstructions.
· Check the venting to ensure that it
is still fastened to the furnace. It
should not sag, and should have a
¼ inch to the foot slope upwards
to the chimney. It should be physi-
cally sound, without holes or ex-
cessive corrosion.
· The return air duct connection
must be sound and securely fas-
tened to the furnace casing. In
most cases, the filter rack provides
the means to connect the return
air to the furnace. There should be
no return air inlets in the vicinity of
the furnace.
· All ductwork should be secured to
the furnace, and all ductwork
should be solidly supported
throughout the heating system.
· The furnace should be well sup-
ported on a level floor, or, by the
means used to suspend the fur-
nace in a horizontal configuration.
Base support should be physically
sound without sagging, cracks,
gaps, etc. around the base so as
to provide a seal between the
support and the base.
· Check the furnace for obvious
signs of deterioration.
· The gas burner should be ob-
served from time to time during the
heating season to ensure that the
flames are clean and blue. A bit of
orange color in the flame is not
likely to be a problem and is
probably dust particles burning. If
you observe lazy yellow flames,
call your heating or service con-
tractor immediately. The yellow
flames inevitably lead to soot-ups.
FURNACE APPEARANCE
The furnace exterior finish is a durable
automotive like coating. It may be
washed with mild soap if necessary.
Galvanized metal surfaces require no
maintenance.
CLEANING
It is advisable to keep dust build-up on
warm surfaces to a minimum, since
dust, in some cases, can be a combus-
tible.
Dust build-up in the circulating fan can
impair blower performance; therefore,
reduce efficiency. Because the blower
wheel is fastened directly to the blower
motor, we recommend that major
cleaning be left to your service contrac-
tor.
DO NOT PERMIT WATER OR CLEANING SOLU-
TIONS TO ENTER THE ELECTRIC MOTOR.
The burner area should be inspected
and cleaned periodically. Be careful
when cleaning around the burner area.
The hot surface igniter is fragile and
will break easily. Do not touch the hot
surface igniter or flame rod
NEVER ATTEMPT TO CLEAN THE
BURNER AREA WHILE THE
BURNERS ARE OPERATING. DOING
SO MAY RESULT IN EXPLOSION OR
FIRE RESULTING IN SEVERE
PERSONAL INJURY OR DEATH.
ALWAYS DISCONNECT THE
ELECTRICAL SUPPLY TO THE
FURNACE BEFORE REMOVING THE
BURNER COMPARTMENT ACCESS
DOOR.

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29785 R3 3/10/2004
THE FURNACE SHOULD BE OPERATED WITH
ALL PANELS IN PLACE. NEVER OPERATE THE
FURNACE WITH THE BLOWER DOOR
REMOVED EXCEPT FOR SERVICE PURPOSES.
The furnace achieves its mid-efficiency
in two general areas. First, there is no
wasteful standing pilot. The furnace
consumes no gas in between cycles.
Secondly, the furnace is designed to
allow very small amounts of excess air
in the combustion process. Older fur-
naces had heat exchangers that were
commonly 40% larger than necessary
for complete combustion. While this
prevented the creation of carbon mon-
oxide, the heated excess air was ex-
pelled up the chimney where it could
not benefit the interior of the home.
Special safety controls now prevent the
formation of carbon monoxide.
IMPORTANT
Your furnace should be cleaned and
inspected annually by a trained and
qualified service technician.
Your service technician has the knowl-
edge and test equipment to determine
the condition of your furnace.
SEQUENCE OF OPERATION
1. Thermostat, responding to cool
room, calls for heat.
2. Combustion air blower begins.
3. After 15 second pre-purge, hot
surface igniter warms up.
4. After approximately 5 seconds, the
gas valve will open, and the burn-
ers ignite.
5. Thirty seconds after the burners
ignite, the main blower starts on
the heating speed.
6. System remains in this state until
the room air temperature rises
causing the thermostat to termi-
nate its call for heat.
7. The gas valve shuts off; the burn-
ers extinguish.
8. After brief post-purge period, (5
seconds), the combustion air fan
stops. The main blower continues
to run.
9. Approximately 2 minutes after the
burners extinguish, the main
blower stops. Elapse time ranges
from 60 seconds to 150 seconds,
depending on the installer’s ad-
justments.
10. The furnace remains idle until the
next call for heat.
VARIATIONS
If your system includes air condition-
ing, your thermostat (supplied by the
installer) will likely have two switches.
The first switch is the system switch.
The switch settings usually include
HEAT, COOL, and OFF. Some ther-
mostats have system switches which
include HEAT, COOL, AUTO, and
OFF. The system switch must be in the
HEAT or AUTO position for the furnace
to run.
The second switch is the fan switch. It
usually has settings of ON and AUTO.
The fan switch may be in either posi-
tion when using the furnace. If the fan
switch is set to ON, the main blower
will run continuously, and the blower
delays mentioned in the sequence of
operation points 5 and 9 will be ig-
nored.

8
29785 R3 3/10/2004
Home Owner Information
To help remember important information,
Please fill in the chart below:
Model No.:
Serial No.:
Installer:
Address:
City:
Postal Code:
Telephone Numbers
Installer:
Serviceman:
After Hr. Phone:
Fuel Supplier:
6800 Base Line, Wallaceburg, Ontario, N8A 5E5, Can. Tel: [phone] Fax: [phone]
2201 Dwyer Avenue, Utica, New York, 13504, USA. Tel: [phone] Fax: [phone]
85 Middle Road, Dunkirk, New York, 14048, USA. Tel: [phone] Fax: [phone]
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