Bryant OM11-19 - Manual (Page 3)

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VII. Step 7
Replace the burner access panel.
VIII. Step 8
Turn on the electrical supply to unit.
IX. Step 9
Open the manual gas valve.
X. Step 10
Set room thermostat selector slightly above room tempera-
ture to start unit. The induced-draft combustion air fan will
start. Main gas valve will open and main burners should
ignite within 5 seconds. If the burners do not light, there is a
22-second delay before another 5-second try. If the burner
still does not light, the time delay is repeated. If the burner
does not light within 15 minutes, there is a lockout. If burn-
ers still do not light, call for service.
XI. Step 11
Set the temperature selector on the room thermostat to de-
sired setting.
TO SHUT UNIT OFF
Refer to Fig. 3 while proceeding with the following steps:
I. Step 1
Set room thermostat to lowest temperature setting and set
SYSTEM switch to OFF position.
II. Step 2
Close the external manual gas valve.
III. Step 3
Turn off the electrical power supply to unit and install lock-
out tag.
IV. Step 4
Remove the burner access panel.
V. Step 5
Move the control on the gas valve to the OFF position.
VI. Step 6
Replace the burner access panel.
VII. Step 7
If unit is being shut down because of a malfunction, call your
dealer as soon as possible.
If unit is being shut down because the heating season has
ended, restore electrical power to the unit to ensure opera-
tion of the cooling system during the cooling season.
Should overheating occur, or the gas supply fail to shut off,
shut off the manual gas valve to the unit before shutting off
the electrical supply.
Do not use this unit if any part has been under water. Imme-
diately call a qualified service technician to inspect the unit
and to replace any part of the control system and any gas
control which has been under water.
MAINTAINING YOUR UNIT
All maintenance should be handled by skilled, experienced
personnel. Your dealer can help you establish a standard
procedure.
For your safety, keep the unit area clear and free of combus-
tible materials, gasoline, and other flammable liquids and
vapors.
To ensure proper functioning of the unit, flow of combustion
and ventilating air must not be prevented from reaching the
unit.
To ensure proper airflow, clearance to the condenser coil
should be 36 in. on one side and 12 in. on the other. Either
side may receive the greater clearance. A clearance of 1 in.
from the bottom of the unit to combustible surfaces must be
maintained when not using a roof curb. A clearance of 0 in.
from the bottom of the base rail to combustible surfaces must
be maintained when not using a roof curb. A 60-in. clearance
above the unit must be allowed for proper condenser fan
operation.
A clearance of 42 in. should be allowed on the unit control
box side. When ungrounded surfaces are present, allow a
36-in. clearance between unit and the ungrounded surfaces.
Allow 42 in. between the unit and block or concrete walls or
other grounded surfaces.
Clearance of 48 in. must be maintained between flue side
and combustible surfaces.
ROUTINE MAINTENANCE AND CARE
FOR THE EQUIPMENT OWNER
Consider the following information before maintaining or
servicing equipment:
I. AIR FILTERS
Air filter(s) should be checked at least every 3 or 4 weeks and
changed or cleaned when necessary. Table 1 indicates the
correct filter size for your unit. See Fig. 4 for filter access
door location.
WARNING: If the main burners fail to light, or the
blower fails to start, shut down gas heating section and
call your dealer for service. Failure to follow these
requirements could result in serious injury or death.
WARNING:
1. Do not turn off the electrical power to unit with-
out first turning off the gas supply.
2. Never attempt to manually light the main
burners on unit with a match, lighter, or any
other flame. If the electric sparking device fails
to light the main burners, refer to the following
shutdown procedures. Call your dealer as soon
as possible.
Failure to follow these procedures could result in seri-
ous fire or serious injury or death.
WARNING:
1. TURN OFF GAS SUPPLY AND THEN ELEC-
TRICAL POWER TO YOUR UNIT BEFORE
SERVICING OR PERFORMING MAINTE-
NANCE.
2. DO NOT turn off electrical power to this unit
without first turning off the gas supply.
3. When removing access panels or performing
maintenance functions inside your unit, be
aware of sharp sheet metal parts and screws.
Although special care has been taken to reduce
sharp edges to a minimum, be extremely care-
ful when handling parts or reaching into the
unit.
Failure to follow these instructions could result in seri-
ous fire or serious injury or death.