Page 37
G60UH Series
17− Reconnect wires to pressure switch, roll−out switches,
gas valve and combustion air inducer. Refer to unit wir-
ing diagram.
G60UH(X) BURNER & HEAT EXCHANGER REMOVAL
FIGURE 28
HEAT EXCHANGER
BURNER BOX ASSEMBLY
NOx INSERTS
(X models only)
FIGURE 29
NOx INSERT
18− Re−install top cap and re−secure vent pipe to combus-
tion air inducer outlet.
19− Reconnect gas supply piping.
20− Turn on power and gas supply to unit.
21− Set thermostat and check for proper operation.
22− Check all piping connections, factory and field, for gas
leaks. Use a leak detecting solution or other preferred
means.
CAUTION
Some soaps used for leak detection are corrosive to
certain metals. Carefully rinse piping thoroughly af-
ter leak test has been completed. Do not use
matches, candles, flame or other sources of ignition
to check for gas leaks.
23− If a leak is detected, shut gas and electricity off and
repair leak.
24− Repeat steps 23 and 24 until no leaks are detected.
25− Replace front access panel.
Planned Service
The service technician should check the following during
an annual inspection. Power to the unit must be shut off for
the service technician’s safety.
Fresh air grilles and louvers (on the unit and in the room
where the furnace is installed) − Must be open and unob-
structed to provide combustion air.
Burners − Must be inspected for rust, dirt, or signs of water.
Vent pipe − Must be inspected for signs of water, damaged
or sagging pipe, or disconnected joints.
Unit appearance − Must be inspected for rust, dirt, signs
of water, burnt or damaged wires, or components.
Blower access door − Must be properly in place and pro-
vide a seal between the return air and the room where the
furnace is installed.
Return air duct − Must be properly attached and provide
an air seal to the unit.
Operating performance − Unit must be observed during
operation to monitor proper performance of the unit and the
vent system.
Combustion gases − Flue products must be analyzed and
compared to the unit specifications.
Problems detected during the inspection may make it nec-
essary to temporarily shut down the furnace until the items
can be repaired or replaced.
Instruct the homeowners to pay attention to their fur-
nace. Situations can arise between annual furnace inspec-
tions that may result in unsafe operation.
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