BURNER
The burners are made of ceramic fabric material
and operate in the infrared mode. Depending on the
environment, the burner(s) may require removal of lint
or grease-laden dust periodically. This may be
achieved by removing the burner and applying
pressurized air to the external surface of the material.
Refer to the Servicing Section related to burner
removal.
BURNER REMOVAL/INSPECTION
1.
Shut off electrical power and gas supply to the
appliance.
2.
Disconnect wiring to hot surface igniter and
flame sensor and remove. See section on
removal of these components.
3.
Remove blower. See Blower Removal
Section.
4.
Remove (5) burner flange mounting bolts.
5.
Gently remove the burner assembly from the
appliance being careful not to damage the
burner material.
6.
To reinstall, reverse above procedure and
ensure that flange gasket is not damaged and
a good seal is maintained.
Replace the
burner gaskets.
7.
Always test for leaks after any service has
been performed on the gas train as there is an
explosive gas mixture present downstream of
the combustion blower.
ADJUSTMENTS/REPLACEMENTS OF
COMPONENTS
CONSULT FACTORY PRIOR TO THE
REPLACEMENT OF ANY COMPONENT.
DANGER - SHOCK HAZARD - Make sure
electrical power to the appliance is disconnected to
avoid potential serious injury or damage to
components.
Gas Valve Replacement
1.
Shut off electrical power and gas supply to the
appliance.
2.
Remove front door and right side panel.
3.
On units with multiple burners, disconnect gas
supply line from the Gas Intake Manifold. On
units with a single burner, disconnect the gas
supply line from the gas valve.
4.
Disconnect wiring connections to gas valve.
5.
Disconnect hoses at air proving switch.
6.
Remove entire gas valve / venturi assembly
from blower by removing the 2 screws.
7.
On units with multiple burners, remove the gas
supply manifold with valves attached.
8.
Reverse above procedure to reinstall.
9.
Leak test the gas train before
re-commissioning unit.
Hot Surface Igniter Replacement
NOTE:
Replacement igniters must be supplied by
NORTEC or damage to the unit may occur.
1.
Shut off electrical power and gas supply to the
appliance.
2.
Disconnect wiring leads to the igniter.
3.
Remove nut holding igniter cylinder to burner
flange and carefully remove igniter.
4.
Inspect igniter gasket and replace if
necessary.
5.
Reverse above procedure to re-install.
CAUTION:
Silicon carbide igniter is fragile
and brittle. Exercise extreme care in handling
the assembly to avoid damage.
Ignition Module Replacement
1.
Shut off electrical power to the appliance.
2.
Remove access door.
3.
Disconnect wiring connections to the module
labeling as required.
4.
Remove screws (2) holding module.
5.
Reverse above procedure to re-install.
Transformer Replacement
1.
Shut off electrical power to the appliance.
2.
Remove access door.
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