Service Instructions
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.
■ 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.
1. Disconnect the electrical supply before servicing
unless necessary for your service procedure.
2. Clean the heater's nozzle with compressed air or
a soft, dry rag. Do not use files, drills, broaches,
etc. to clean the nozzle hole. Doing so will enlarge
the hole, causing combustion or ignition problems.
Replace the nozzle if it cannot be cleaned properly.
3. The high limit switches and, and thermostat 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
immediately.
-- An alternate method for checking the
components is to perform a continuity check.
4. Open or remove the respective case panel for
access to fan related components.
5. For reassembly, reverse the respective service
procedure. Ensure all fuel connections are
tightened securely.
6. After servicing, start the heater to ensure proper
operation.
Journeyman Ductable Oil Indirect-Fired Heater
7. If any fan keys are lost during service, replacements are
easily made by using 3/16 square x 1 in. bar stock.
Motor/Fan Blades Assembly
Disconnect electrical power supply before working
To access the main motor & fan blades:
• Remove the 7 screws securing the guard to the fan section.
• Remove the fan guard.
Fan Motor
1. Loosen the electrical access plate's screws on the motor
and remove the access plate.
2. Disconnect the power supply wires.
Owner's Manual • Journeyman
DANGER
Electrical Shock
ACCESS
PLATE
15