Lennox DAVE SIGNATURE SL280DFV Installation Instructions Manual page 22

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)
Communicating Enabled Furnace and Non-
Communicating Outdoor Unit
OPTIONAL
DISCHARGE
AIR SENSOR
COMMUNICATING
THERMOSTAT
CLIP ON-BOARD LINK
W915 (Y1 TO Y2) FOR
TWO-STAGE OPERATION
Outdoor Unit
COMMUNICATING FURNACE
OPTIONAL
OUTDOOR
AIR SENSOR
A2L
NON-COMMUNICATING
OUTDOOR AIR
CONDITIONING UNIT -
1 OR 2 STAGE
nace/air handler control and four wires between the outdoor unit and the furnace/air
handler control. When a thermostat cable with more than four wires is used, the extra
wires must be properly connected to avoid electrical noise. The wires must not be left
disconnected.
Use wire nuts to bundle the four unused wires at each end of the cable. A single wire
should then be connected to the indoor unit end of the wire bundle and attached to the
"C" terminals as shown below.
• 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)
Communicating Enabled Furnace and
Communicating Enabled Outdoor Unit
COMMUNICATING FURNACE
OPTIONAL
DISCHARGE
AIR SENSOR
OPTIONAL
OUTDOOR
AIR SENSOR
COMMUNICATING
THERMOSTAT
Communicating Integrated Control
A2L
FIGURE 20
Page 22
A2L
DOOR AIR CONDITIONING
OR HEAT PUMP UNIT
Communicating Thermostat