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NOTE: Unit nameplate states maximum current draw. See
table for maximum over current protection.
2. Holes are on both sides of the furnace cabinet to facilitate
wiring.
3. Install a separate (properly sized) disconnect switch 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 wiring
diagram shown in Figure 32. Use 18 gauge wire or
larger that is suitable for Class II rating 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.
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 connected
to one of the provided neutral terminals. See Figure 34
for location of terminal. This terminal is energized when
the indoor blower is operating.
8. One line voltage "HUM" 1/4" spade terminal is provided
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 34 for location
of terminal. This terminal is energized in the heating
mode when the indoor blower is is operating.
9. One 24V "H" terminal is provided on the furnace
integrated 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 34 for location of terminal.
506552-01
Table 10
10. Install the room thermostat according to the instructions
provided with the thermostat. See Table 11 for
thermostat connections. If the furnace is being matched
with a heat pump, refer to the instruction packaged with
the dual fuel thermostat.
Thermostat Selection
The unit is designed to operate in a variable rate capacity
mode using a two stage thermostat. This unit will
automatically adjust firing rate based upon thermostat cycle
times.
For optimal performance in non-communicating applications,
Allied Air recommends the following two stage thermostat
set-up for optimal variable rate capacity mode:
First heat stage differential set to 1/2 to 1 degree F; second
heat stage differential set to 1/2 or 1 degree F; second heat
stage upstage timer disabled, or set to maximum (1 hr
minimum).
Indoor Blower Speeds
1. When the thermostat is set to "FAN ON," the indoor
blower will run continuously at 38% percent of the second
stage cooling speed when there is no cooling or heating
demand.
2. When the unit is running in the heating mode, the
integrated control will automatically adjust the blower
speed to match the furnace firing rate. This speed can
be adjusted up or down by 7.5% or 15% using DIP
switches 14 through 16 for the low heat speed and 17
through 19 for the high heat speed.
3. When there is a cooling demand, the indoor blower will
run on the cooling speed designated by the positions of
DIP switches 8 through 11.
Issue 1034
Page 23 of 52
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