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of the circuit being connected to one of the provided neutral
terminals. If an accessory rated at greater than one amp is
connected to this terminal, it is necessary to use an exter
nal relay.
One line voltage “HUM” 1/4” spade terminnal is provided
on the furnace integrated control. See figure 21 for inte
grated control configuration. This terminal is energized in
the heating mode when the combustion air inducer is
operating. Any humidifier rated up to one amp can be con
nected to this terminal with the neutral leg of the circuit be
ing connected to one of the provided neutral terminals. If a
humidifier rated at greater than one amp is connected to
this terminal, it is necessary to use an external relay relay.
One 24V ”H” 1/4” spade terminal is provided on the furnace
integrated control. See figure 21 for integrated control con
figuration. The terminal is energized in the heating mode
when the combustion air inducer is operating and the pres
sure switch is closed. Any humidifier rated up to 0.5 amp
can be connected to this terminal with the ground leg of the
circuit connected to ground or the ”C” terminal.
Generator Use - Voltage Requirements
The following requirements must be kept in mind when
specifying a generator for use with this equipment:
S
The furnace requires 120 volts + 10% (Range: 108
volts to 132 volts).
S
The furnace operates at 60 Hz + 5% (Range: 57 Hz to
63 Hz).
S
The furnace integrated control requires both proper
polarity and proper ground. Both polarity and proper
grounding should be checked before attempting to op
erate the furnace on either permanent or temporary
power.
S
Generator should have a wave form distortion of less
than 5% total harmonic distortion.
Thermostat
Install the room thermostat according to the instructions
provided with the thermostat. See figure 20 for thermostat
designations. If the furnace is being matched with a heat
pump, refer to the FM21 installation instruction or appropri
ate dual fuel thermostat instructions.
Indoor Blower Speeds
1 - When the thermostat is set to “FAN ON,” the indoor
blower will run continuously on the fan speed when
there is no cooling or heating demand.
2 - When the EL180DFE is running in the heating mode,
the indoor blower will run on the heating speed.
3 - When there is a cooling demand, the indoor blower will
run on the cooling speed.
