Variations; Terminations - Napoleon WPV-N Série Instructions D'installation Et D'opération

5. When the thermostat W2 call ends and W1 remains (two stage thermostat), the control de-energizes the
high gas output and immediately changes exhauster speed from high to low. With the thermostat heating
contacts open (single stage thermostat), the fl ames extinguish immediately and the exhauster blower
stops after a 5 second post purge time.
6. Blower off delay is handled by the motor. The control de-energizes the motor heat signal when the gas
valve de-energizes, and starts a programmed delay period.
IN THE EVENT OF FLAME FAILURE:
If fl ame is lost, the control de-energizes the gas valve within 2 seconds, switches the exhauster motor to
high speed (if not already on high), and begins timing the inter-purge delay. The indoor blower motor will be
energized and/or remain energized on heat speed for the programmed delay off time. When the inter-purge
delay is over, the control will re-cycle up to 5 fl ame losses (4 re-cycles) within a single call for heat before
going into lockout. The control fl ashes "8" on the Red LED if lockout is due to too many fl ame dropouts (1 hour
lockout).
4.8

VARIATIONS

If your system includes air conditioning, your thermostat will likely have two switches. The fi rst switch is the
system switch. The switch settings usually include HEAT, COOL, and OFF. Some thermostats have system
switches which include HEAT, COOL, AUTO, and OFF. The system switch must be in the HEAT or AUTO
position for the furnace to run.
The second switch is the fan switch. It usually has settings of ON and AUTO. The fan switch may be in either
position when using the furnace. If the fan switch is set to ON, the main blower will run continuously.
4.9

TERMINATIONS

The combustion air and exhaust terminals should be inspected occasionally to ensure that they are free of
obstructions and debris. If screens were used in either terminal, ensure that they are free of debris, corrosion,
or anything preventing the free fl ow of air.
H21.3.2B
H27.7
H27.8
W415-2308 / B / 11.04.19
75
UM