Ignition Module Replacement; Transformer Replacement; Air Switch Replacement; Combustion Air Blower Replacement - Nortec GH Series Instaliation, User & Maintenance Manual

3. Remove nut holding igniter cylinder to burner
flange and carefully remove igniter.
4. 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.
3. Disconnect wiring connections from
transformer leads labeling as required.
4.
Remove screws (2) holding transformer.
5. Reverse above procedure to re-install.
Air Switch Replacement
1. Shut off electrical power to the appliance.
2. Remove front panel.
3. Remove wiring connections to switch.
4.
Remove screws (2) holding the switch.
5. Remove pressure hose(s) from switch noting
proper location.
6. Reverse above procedure to re-install.
Combustion Air Blower Replacement
1. Shut off electrical power to the appliance.
2.
Remove front panel.
3. Disconnect plug connection to motor.
4.
Remove bolts on air intake assembly.
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5. Remove nuts on discharge outlet of blower.
6. Remove blower assembly.
7. Reverse above procedure to re-install
ensuring that O-ring is properly seated.
Tank Replacement
1. Drain water from unit. See section "Draining
The Tank".
2. Switch off power to the unit and open right
front door and removable right panel.
3. Disconnect steam and condensate lines.
4. Remove top door/panel with lock key and lift
the door out of the overlapped edge.
5. Remove tank lid by unscrewing the knobs.
6. Remove left door/panel.
7. Disconnect float chamber by uncoupling the
union and releasing the hose clamp.
8. Disconnect the blowdown/skimmer line (3/4"
copper) utilizing the union.
9. Remove the nuts on the accessory panel.
10. Disconnect the left end tank brackets from the
frame.
11. Carefully slide tank out the left end of the
casing.
12. Reverse procedure to replace tank and
replace fiber gasket on accessory panel
before bolting together.
BLOWDOWN CALIBRATION
The humidifier is equipped with an adjustable
timer that is factory set for average water conditions.
However, in areas of extreme water conditions, it may
be necessary to increase the blowdown time to
compensate for these conditions.
To increase the blowdown time, rotate the small
dial labeled "Slowdown", located on the electrical
panel behind the locked door, in a clockwise direction.
This will result in more skimming time and therefore
reduce the concentration of total dissolved solids. It
may be necessary to test the tank water periodically to
determine the optimum blowdown setting.