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Premier Ductable Heater
www.lbwhite.com
Owner’s Manual • Premier Ductable Heater
18
Service Instructions
1. Close the fuel supply valve to the heater and
disconnect the electrical supply before servicing
unless necessary for your service procedure.
2. Clean the heater’s orifice with compressed air or
a soft, dry rag. Do not use files, drills, broaches,
etc. to clean the orifice hole. Doing so will enlarge
the hole, causing combustion or ignition problems.
Replace the orifice if it cannot be cleaned properly.
3. The high limit switch can be tested by:
-- Disconnecting the leads at the component, and
jumpering the leads together.:
-- Reconnect the electrical supply and open fuel
supply valves.
-- If the heater lights, the component is defective
and must be replaced.
-- Do not leave the jumper on or operate the heater
if the part is defective. Replace the part immedi-
ately.
-- An alternate method for checking components is
to perform a continuity check.
4. The air pressure switch must not be jumpered.
If jumpered, the ignition control will not allow the
heater to operate. Test the air pressure switch for
continuity. If defective, replace the switch.
WARNING
Burn Hazard
■ Heater surfaces are hot for a period of time after
the heater has been shut down.
■ Allow the heater to cool before performing
service, maintenance, or cleaning.
■ Failure to follow this warning will result in burns
causing injury.
WARNING
Fire and Explosion Hazard
■ Do not disassemble or attempt to repair any
heater components or gas train components
such as gas valves, or gas hoses.
■ All component parts must be replaced if defects
are found.
■ Failure to follow this warning will result in fire or
explosions, causing property damage, injury, or
death.
Motor & Fan Assembly
Premier 40
■ Remove the 8 screws located on the underside of the
base; 4 each on both long sides of the heater. Spread
the bottom sides outward and lift up to clear the
internal components.
Premier 80/170
■ Open the louvered access panel opposite the burner
end of heater.
1. Disconnect the motor leads.
2. Remove the screws securing the motor mounting plate
to the housing.
3. Pull the motor and fan assembly from the housing.
4. Loosen set screws on the fan wheel and pull the fan
wheel from the motor shaft.
5. Remove the four nuts securing the motor to the mount-
ing plate.
6. See Fig. 16 for fan wheel spacing.
5. Open the front case panel for access to the heat-
ers interior components.
6. Disconnect the appropriate electrical leads when
replacing components.
7. For reassembly, reverse the respective service
procedure. Ensure gas connections are tightened
securely and leak checked.
8. After servicing, start the heater to ensure proper
operation.