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FIGURE 12
G23(X) UPPER VEST PANEL
FLUE COLLECTOR BOX
FLUE BOX
GLASS FIBER GASKET
ORIFICE PLATE
(FLUE TRANSITION ASSEMBLY)
UPPER VEST
PANEL
IGNITION CONTROL
BRACKET
COMBUSTION AIR BLOWER
FLUE OUT-
LET
GLASS FIBER
GASKET
COMBUSTION AIR BLOWER MOTOR
IGNITION CONTROL
(-1 through -4 model units)
COMBUSTION AIR BLOWER
PROVE (PRESSURE)
SWITCH
COMBUSTION AIR BLOWER
GLASS FIBER GASKET
NOTE-ALL components located behind up-
per vest panel including combustion air blow-
er are exposed to supply air stream.
E-Blower Motors and Capacitors
All G23(X) units use direct drive blower motors. All motors
used are 120V permanent split capacitor motors to ensure
maximum efficiency. See table 4 for ratings.
TABLE 4
G23(X) BLOWER RATINGS 120V 1PH
BLOWER MOTOR HP
G23Q2/3(X)
G23Q3(X)
CAP
1/3
5MFD 370V
G23Q5/6(X)
G23Q4/5(X)
3/4 40MFD 370V
3/4 40MFD 370V
1/3
5MFD 370V
G23Q2(X) 1/5 5MFD 370V
G23Q3/4(X)
1/2
7MF 370V
F-Flame Rollout Switch (S47)
Flame rollout switch is a high temperature limit located on
rollout switch bracket (over burner assembly). The limit is a
N.C. SPST manual-reset limit connected in series with the
ignition control (A3). When S47 senses rollout, the ignition
control immediately stops ignition and closes the gas valve.
If unit is running and flame rollout is detected, the gas valve
will close and ignition control will be disabled. Rollout can
be caused by a reverse draft, blocked flue or lack of com-
bustion air. The switch is factory set and cannot be ad-
justed. The switch may have different setpoints for each
unit model number. However, the setpoint will be printed on
the side of the limit. The switch can be manually reset. To
manually reset a tripped switch, push the reset button lo-
cated on the control (see figure 13).
FIGURE 13
ROLLOUT SWITCH (S47)
MANUAL
RESET BUTTON
G-Primary Limit Control (S10)
Primary limit (S10) on G23(X) units is located in the middle of
the vestibule panel. When excess heat is sensed in the heat
exchanger, the limit will open. If the limit is tripped, the furnace
control energizes the supply air blower and closes the gas
valve. The limit automatically resets when temperature re-
turns to normal. The switch is factory set and cannot be ad-
justed. The switch may have different setpoints for each
unit model number. However, the setpoint will be printed on
the side of the limit.
FIGURE 14
INSULATING COVER (s)
LIMIT CONTROL (S10) FOR
G23(X) SERIES UNITS AND ALTERNATE STYLE
SPADE CONNECTORS
LIMIT
Units may be equipped with
either style limit.
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