507858-01
Issue 1922
Page 17 of 21
4.
Reinstall orifices and burners in the reverse order in
which they were removed. Ensure burners are properly
seated over orifices and properly aligned.
5. Reinstall access panel and turn on gas and electrical
service.
Heat Exchanger
The heat exchanger should be inspected periodically and
cleaned if necessary. If cleaning is necessary, use a stiff
brush with a wire handle to remove scale. While cleaning
the heat exchanger, the vent extension tube should also
be cleaned. Remove the four screws on the combustion
blower mounting plate and take out the blower. Use a
brush to clean the vent extension tube.
Filters
Cleaning the air filter: Follow directions noted on the
filter. Washable filters may be washed, dried, and reused.
Disposable filters must be replaced.
Cooling System
The refrigeration system normally requires no maintenance
since it is a closed, self-contained system. Periodic
maintenance is limited to:
•
Cleaning the air filter. Follow directions noted on the
filter and label attached to the access panel.
• Cleaning the condenser coil if covered with any foreign
material, lint, leaves, or other obstructions.
The condensing coil should be cleaned at a minimum once
per year. In areas subject to high traffic or environmental
conditions which may contain chloride, sulfites, dust,
ammonia, etc., more frequent cleaning is required.
2. Make sure there are no leaks of outside air into the
return air system.
3. Keep the outside louver grille as free as possible of
any ice that may form and obstruct the flue outlet.
High Altitude
In both the United States and Canada, this unit is approved
for operation at altitudes from 0 to 5,500 feet above sea
level without any required modifications. For installations
above 5,500 feet, refer to Table 6.
Maintenance
Disconnect all electrical power to the unit before
conducting any maintenance procedures. Failure to
disconnect the power could result in personal injury or
death.
WARNING
Heating System
Burners
The burners can be removed for cleaning or changing
orifices. To remove the burners:
1.
Disconnect electrical service and turn off gas to the
appliance.
2. Remove access panel to burners and gas valve
compartment.
3. Burners can be individually removed from burner
assembly by removing the two screws that hold each
burner in the burner rack.
• Burners can be cleaned using a bottle brush.
•
Orifices are threaded into the gas manifold and can
be removed by unscrewing.
Altitude
Natural Gas
LP Gas
Burner Orifices
Manifold Pressure
Burner Orifices LP Kit
Manifold Pressure
0 - 5,500 ft.
As shipped
3.5” w.c.
ALPKT613 or 614
(model dependent)
10.0” w.c.
5,500 - 8,500 ft.
3.0” w.c.
8.0” w.c.
Above 8,500 ft.
Per National Fuel Gas Code
3.5” w.c.
Per National Fuel Gas Code
10.0” w.c.
Table 6.
