VI. MAIN BURNERS
For all applications, main burners are factory set and should require no adjustment.
A.Main Burner Removal (Fig. 38)
1.Shut off
2.Shut off power to unit.
3.Remove heating access panel.
4.Disconnect gas piping from gas valve inlet.
5.Remove wires from gas valve.
6.Remove wires from rollout switch.
7.Remove sensor wire and ignitor cable from IGC board.
8.Remove 2 screws securing manifold bracket to basepan.
9.Remove 4 screws that hold the burner support plate ¯ange to the vestibule plate.
10.Lift burner assembly out of unit.
Fig. 38 Ð Main Burner Removal
VII. POWER EXHAUST OPERATION
The power exhaust packages are factory- or
VIII. HEAD PRESSURE CONTROL
Each unit has a fan cycling, outdoor thermostat to shut off the
IX. LOW AMBIENT KIT
Low Ambient Kit is a fan speed control device actuated by a temperature sensor. The
CARE AND MAINTENANCE
To ensure continuing high performance, and to minimize the possibility of premature equipment failure, periodic mainte- nance must be performed on this equipment. This combina- tion heating/cooling unit should be inspected at least once each year by a quali®ed service person.
NOTE TO EQUIPMENT OWNER: Consult your local dealer about the availability of a maintenance contract.
WARNING: The ability to properly perform mainte- nance on this equipment requires certain expertise, mechanical skills, tools, and equipment. If you do not possess these, do not attempt to perform any mainte- nance on this equipment other than those procedures recommended in the User's Manual. FAILURE TO HEED THIS WARNING COULD RESULT IN SERIOUS PER- SONAL INJURY AND POSSIBLE DAMAGE TO THIS EQUIPMENT.
The minimum maintenance requirements for this equipment are as follows:
1.Inspect air ®lters each month. Clean or replace when necessary.
2.Inspect cooling coil, drain pan, and condensate drain each cooling season for cleanliness. Clean when necessary.
3.Inspect blower motor and wheel each heating and cooling season. Clean and lubricate (if required) when necessary.
4.Lubricate bearings every 6 months if fan runs continu- ously or annually if fan runs intermittently.
5.Check electrical connections for tightness and controls for proper operation each heating and cooling season. Service when necessary.
6.Check and inspect heating section before each heating season.
7.Check and clean vent screen if needed.
WARNING: Failure to follow these warnings could re- sult in serious personal injury:
1.Turn off electrical power to the unit before perform- ing any maintenance or service on the unit.
2.Use extreme caution when removing panels and parts. As with any mechanical equipment, personal injury can result from sharp edges, etc.
3.Never place anything combustible either on, or in con- tact with, the unit.
4.Should overheating occur, shut off the electrical supply.
Ð28Ð