Page 23
INTERIOR MAKE−UP BOX INSTALLATION
MAKE−UP
BOX
Left side
FIGURE 22
Refer to figure 23 for schematic wiring diagram and trou-
bleshooting and table 10 and figure 24 for field wiring.
1 − Select circuit protection and wire size according to the
unit nameplate. The power supply wiring must meet
Class I restrictions.
2 − Holes are on both sides of the furnace cabinet to facili-
tate wiring.
3 − Install a separate disconnect switch (protected by ei-
ther fuse or circuit breaker) near the furnace so that
power can be turned off for servicing.
4 − Before connecting the thermostat or the power wiring,
check to make sure the wires will be long enough for
servicing at a later date. Remove the blower access
panel to check the length of the wire.
5 − Complete the wiring connections to the equipment.
Use the provided unit wiring diagram and the field wir-
ing diagrams shown in table 10 and figure 24. Use
18−gauge wire or larger that is suitable for Class II ra-
ting for thermostat connections.
6 − Electrically ground the unit according to local codes or,
in the absence of local codes, according to the current
National Electric Code (ANSI/NFPA No. 70) for the
USA and current Canadian Electric Code part 1 (CSA
standard C22.1) for Canada. A green ground wire is
provided in the field make−up box.
NOTE − The G60UHV(X) furnace contains electronic
components that are polarity sensitive. Make sure
that the furnace is wired correctly and is properly
grounded.
7 − One line voltage EAC" 1/4" spade terminal is provided
on the furnace integrated control. Any electronic air
cleaner rated up to one amp can be connected to this
terminal with the neutral leg of the circuit being con-
nected to the one of the provided neutral terminals.
See figure 25 for control configuration. This terminal is
energized when the indoor blower is operating.
8 − One line voltage HUM" 1/4" spade terminal is pro-
vided on the furnace integrated control. Any humidifier
rated up to one amp can be connected to this terminal
with the neutral leg of the circuit being connected to
one of the provided neutral terminals. See figure 25 for
control configuration. This terminal is energized in the
heating mode whenever the combustion air inducer is
operating.
9 − One 24V H" terminal is provided on the furnace inte-
grated control terminal block. Any humidifier rated up
to 0.5 amp can be connected to this terminal with the
ground leg of the circuit being connected to either
ground or the C" terminal. See figure 25 for control
configuration.
10 −Install the room thermostat according to the instruc-
tions provided with the thermostat. See table 10 for
field wiring connections in varying applications. If the
furnace is being matched with a heat pump, refer to the
instruction packaged with the dual fuel thermostat.
Indoor Blower Speeds
1 − When the thermostat is set to FAN ON," the indoor
blower will run continuously at approximately 38% of
the second−stage cooling speed when there is no cool-
ing or heating demand.
2 − When the G60UHV(X) is running in the heating mode,
the indoor blower will run on the heating speed desig-
nated by the positions of DIP switches 11 and 12.
3 − When there is a cooling demand, the indoor blower will
run on the cooling speed designated by the positions
of DIP switches 5 and 6.
