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An unpowered, normally open (dry) set of contacts with
a 1/4” spade terminal “HUM” are provided for humidier
connections and may be connected to 24V or 120V. Any
humidier rated up to one amp can be connected to these
terminals. In 120V humidier applications the neutral leg of
the circuit can be connected to one of the provided neutral
terminals. This terminal is energized in the heating mode.
Install the room thermostat according to the instructions
provided with the thermostat. See table 11 for eld wiring
connections in varying applications. If the furnace is being
matched with a heat pump, refer to the instruction pack-
aged with the dual fuel thermostat.
Thermostat Selection
CAUTION
Field wiring for both communicating and non-
communicating applications is illustrated in diagrams,
which begin on the next page.
Non-Communicating
In non-communicating applications the EL296UHV
is designed to operate in a SINGLE-STAGE mode or
TWOSTAGE mode using a conventional thermostat.
For optimal performance in non-communicating applica-
tions, Lennox recommends use of a ComfortSense® 7000
high quality electronic digital thermostat or any other with
adjustable settings for 1st stage / 2nd stage on / off differ-
entials and adjustable stage timers.
Communicating
In communicating applications the icomfort Wi-Fi® ther-
mostat must be used. Refer to the instructions provided
with the thermostat for installation, set-up and operation.
In communicating system all unused thermostat wire in
the wire bundle needs to be terminated inside and out.
The extra wires can terminate on the ‘C” terminal of the
icomfort communication terminal strip. (RSBus). Using an
additional wire come off ”C” terminal and wire nut all the
extra wires together. Termination on the outdoor control
must match the indoor control.
Indoor Blower Speeds
Non-Communicating
When the thermostat is set to “FAN ON,” the indoor blower
will run continuously at a eld selectable percentage of
the second-stage cooling speed when there is no cooling
or heating demand. The factory default setting is 38% of
cool speed. When the EL296UHV is running in the heat-
ing mode,the indoor blower will run on the heating speed
designated by the positions of DIP switches 11, 12 and 13.
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. First stage cooling will run at 70%
cool speed.
Communicating
NOTE - When the EL296UHV is used with icomfort Wi-
F® thermostat, proper indoor blower speed selections are
made by the communicating thermostat.
When the thermostat is set to “FAN ON,” the indoor blower
will run at setting determined during system conguration.
When there is a heating demand the fan will run on heat-
ing speeds for ring rate. When there is a cooling demand,
the fan will run on the rst stage and second stage cooling
speed set using the icomfort WiFi® thermostat in the in-
staller setup mode. The factory default is based upon 400
CFM a ton.
Generator Use - Voltage Requirements
The following requirements must be kept in mind when
specifying a generator for use with this equipment:
• The furnace requires 120 volts (Range: 102 volts to
132 volts)
• The furnace operates at 60 Hz + 5% (Range: 57 Hz
to 63 Hz)
• The furnace integrated control requires both correct
polarity and proper ground. Both polarity and proper
grounding should be checked before attempting to
operate the furnace on either permanent or tempo-
rary power
• Generator should have a wave form distortion of
less than 5% THD (total harmonic distortion)
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