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User's Information
To Start
the Heating
System
Heating Cycle Operation
Your unit's heating
system
has a solid-state
electronic
ignition control that lights the furnace burners
each time the
thermostat
calls for heat. At the end of each heating
cycle, the
furnace burners
are extinguished.
This type of system
is
called Direct Spark Ignition
(DSI).
A normal heating
cycle begins when the air temperature
in
your home drops below the thermostat
setting.
The thermo-
stat then energizes
the heating
electrical
circuit that starts
and controls the furnace
burners.
Shortly
after the burners
ignite, the indoor fan starts
and circulates
warm air through
your home.
When the air temperature
rises above the thermostat
setting,
the thermostat
de-energizes
the heating
electrical
circuit,
which in turn, extinguishes
the furnace
burners.
The indoor
fan continues
to circulate
warm air until the remaining
heat
is removed from the unit's heat exchanger.
Safety Controls
Your unit is equipped
with an automatic
reset safety limit
control to prevent
overheating.
When this control opens, it
shuts down the heating
electrical
circuit until the unit cools
down sufficiently.
Inadequate
airflow may cause the unit to
cycle on and off as the limit control trips and automatically
resets. If you suspect
that the unit is cycling on its limit
control, immediately
contact a service technician
for instruc-
tions.
If the unit is unable
to exhaust
combustion
by-products
properly,
due to a blocked flue hood or other blockage, a
pressure
switch safety device will prohibit
the unit from
operating.
The cause must be investigated
by a qualified
service technician.
If flames from the burner
are not properly
drawn into the heat
exchanger,
a Flame Rollout Protection
Control will open
causing
the furnace
to shut off. The cause must be investi-
gated by a qualified
service technician.
Heating System Start Up
Never attempt to manually light the burner. This unit is
equipped with an ignition device which automatically lights
the burners.
Your unit has an automatic
ignition
system. This feature
makes it easy to start the heating
cycle at the beginning
of
the heating
season.
In order for this unit to operate
properly
and safely, the
furnace needs air for both combustion
and ventilation.
Accordingly,
observe the area in which the furnace is installed.
Check to make sure that all the air openings
are unob-
structed.
Likewise,
insure
that the spacing around
the furnace
itself is not blocked or obstructed.
1. Set the thermostat
to lowest setting.
2. Turn offall electric power to the unit if service is to be
performed.
3. Remove the access panel that is identified
as CONTROL/
HEAT.
4. Turn gas control off by moving the toggle switch to OFF.
See Figure
2 on page 5.
5. Wait five (5) minutes
to clear any gas. If you then smell
gas, STOP!, for your safety follow the "What To Do If You
Smell Gas" instructions
on the front page. If you do not
smell gas, go to next step.
6. Turn gas on by moving the toggle switch to ON.
7. Replace the panel that you removed
in Step 3 and make
sure all other unit panels
are securely
in place.
8. Turn on all electrical
power to the unit.
9. Set thermostat
to desired temperature
and the fan to ON.
The unit will now operate
automatically.
10.If the unit will not operate,
perform
the steps in the
following section, "To Turn OffGas
To Unit" (under
Heating
System
Shutdown)
and call your service techni-
cian or gas supplier.
NOTE: The unit is to be adjusted to obtain a temp air rise that is
specified on the nameplate.
Heating System Shutdown
To shut down the heating
system
for brief periods of time,
simply adjust
the thermostat
selector
switch to the OFF
position.
If you need to turn the gas offto the unit, follow the steps
below:
To Turn Off Gas To Unit
1. Set the thermostat
to lowest setting.
2. Turn offall electric power to the unit if service is to be
performed.
3. Remove the access panel that is identified
as CONTROL/
HEAT.
4. Turn gas control off by moving the toggle switch to OFF.
See Figure 2 on page 5.
5. Replace the panel you removed
in Step 3.
If you shutdown your heating system during the cold
weather months, precautions must be taken to prevent
freeze-up of all water pipes and water receptacles. When-
ever your home or building is to be vacant, arrange to have
someone inspect your structure for proper temperature. This is
very important in below freezing weather. If for any reason
your furnace should fail to operate, damage such as frozen
water pipes could result.
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