Lennox ELITE Series Installation Instructions Manual page 38

An unpowered, normally open (dry) set of contacts with
a 1/4" spade terminal "HUM" are provided for humidifier
connections and may be connected to 24V or 120V. Any
humidifier rated up to one amp can be con nected to these
terminals. In 120V humidifier 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 13 for field wir-
ing connections in varying applications. If the furnace is
being matched with a heat pump, refer to the instruction
packaged with the dual fuel thermostat.
Thermostat Selection
CAUTION
Field wiring for both
communicating applications is illustrated in diagrams,
which begin on Page 39.
Non-Communicating
In non-communicating applications the EL296DFV 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
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 a communicating thermo-
stat 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 strip. (RS-
Bus). 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.
communicating and non-
7000
®
Indoor Blower Speeds
Non-Communicating
When the thermostat is set to "FAN ON," the indoor blower
will run continuously at a field 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 EL296DFV 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 EL296DFV is used with a communicat-
ing thermostat, proper indoor blower speed selections are
made by the communicating thermostat. When the ther-
mostat is set to "FAN ON," the indoor blower will run at set-
ting determined during system configuration. See TABLE
23 on page 55 for allowable circulatuion speeds.
When there is a heating demand the fan will run on heat-
ing speeds for firing rate. See TABLE 22 on page 55
for allowable heating speeds. When there is a cooling de-
mand, the fan will run on the first stage and second stage
cooling speed set using thermostat in the installer 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)
Page 38