Lennox G23(X) User Manual

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G23(X) FLAME BAFFLES
(NOx UNITS ONLY)
FLAME BAFFLE
TO REMOVE BAFFLE: REMOVE
SCREW. ROTATE BAFFLE AS SHOWN
AND REMOVE FROM HEAT EXCHANG-
ER
FIGURE 42
9 - Insert brush end of cable snake into top of one of the
heat exchanger openings. DO NOT FORCE CABLE
INTO HEAT EXCHANGER. Once the cable has been
inserted, operate drill on slow speed. Move the cable
in and out of the heat exchanger section three or four
times or until sufficient cleaning is accomplished. Re-
verse drill and slowly work cable out of opening.
10- Repeat procedure for each heat exchanger section.
11- When the top heat exchanger sections are complete,
place brush end of cable snake into the bottom openings
of each of the heat exchanger sections. Clean the bottom
opening as described in step 9.
12- Remove cable from heat exchanger. Use a vacuum to
remove debris knocked loose during cleaning from
each heat exchanger section.
13- Attach the exhaust end (positive pressure) of the
vacuum to the top of the heat exchanger sections.
Any loose debris will be forced to the bottom of the
heat exchanger section. Vacuum debris from bot-
tom openings.
14- Replace collector box and combustion air blower.
Check gaskets for damage. Damaged seals must be
replaced to avoid heat exchanger leaks. Replace all
screws to the collector box and combustion air blower.
Leaving off screws may cause leaks.
15- Replace upper vestibule panel, top cap, pressure
switch and ignition control.
16- Clean burner by running a vacuum with a soft brush at-
tachment over face of burners. Visually inspect inside of
burners and crossovers for any blockage caused by for-
eign matter. Remove any blockage.
17- For NOX units, replace flame baffles in each heat ex-
changer section. DO NOT BEND baffles. Baffles
should sit on the bottom of each heat exchanger sec-
tion.
18- Replace burner / manifold assembly onto lower vesti-
bule panel.
19- Reconnect wires to ignition control (-1 through -4 mod-
el units), pressure switch, roll-out switch, gas valve and
combustion air blower. Refer to unit wiring diagram.
20- Reconnect vent pipe to combustion blower outlet.
21- Reconnect gas supply piping.
22- Turn on power and gas supply to unit.
23- Set thermostat and check for proper operation.
24- 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
tocertainmetals.Carefullyrinsepiping thorough-
ly after leak test has been completed. Do not use
matches, candles, flame or other sources of igni-
tion to check for gas leaks.
25- Ifa leakisdetected, shut gas and electricityoff and
repair leak.
26- Repeat steps 23 and 24 until no leaks are detected.
27- Replace front access panel.
C-Supply Air Blower
1 - Check and clean blower wheel.
2 - Motors used on the Lennox G23(X) series units are
permanently lubricated and need no further lu-
brication.
D-Flue and Chimney
Flue must conform to all AGA/GAMA venting require-
ments. Flue pipedeteriorates from the insideout and must
be disconnected in order to check thoroughly. Check flue
pipe, chimney and all connections for tightness and to
make sure there is no blockage or leaks.
E-Electrical
1 - Check all wiring for loose connections.
2 - Check for correct voltage.
3 - Check amp-draw on blower motor.

Lennox G23(X) Specifications

General

Brand	Lennox
Model	G23(X)
Category	Furnace
Language	English