Dehumidification; Setting Blower "On" And "Off" Timings; Continuous Fan Operation - Napoleon WPV-N Série Instructions D'installation Et D'opération

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FIGURE 33 - INTEGRATED FURNACE IGNITION CONTROL
IOM
IOM
PARK
TERMINALS
ELECTRONIC
AIR CLEANER
POWER
HUMIDIFIER
120 VAC
MOLEX
120 VAC NEUTRAL
CONNECTIONS
18.4

DEHUMIDIFICATION

For situations where humidity control is a problem, a dehumidifi cation feature has been built into the variable
speed motor. At the start of each cooling cycle, the variable speed motor will run at 82% of the rated airfl ow for
7.5 minutes. After 7.5 minutes has elapsed, the motor will increase to 100% of the rated airfl ow.
There are three jumper wires in front of the thermostat input terminal block that are used in different
applications. These jumper wires may be cut or clipped when the option is not desired.
• The JW38 jumper not clipped, connects Y1 to Y2 so that the ECM motor only recognizes one input, when
using a single stage thermostat. If you are connecting a single stage A/C unit, input can be on either the
Y or Y2 terminal. If you are connecting a two stage A/C unit, the JW38 jumper must be clipped (1st stage
cool Y1, 2nd stage cool Y2).
• The JW39 jumper not clipped, connects O to R for using a heat pump in the non-heat pump mode (cooling
only). If the JW39 jumper is clipped, the heat pump will run in heat pump mode.
• The JW40 jumper not clipped, connects DEHUM to R for dehumidifi cation active all the time. With the
JW40 jumper clipped, the thermostat,or humidstat controls dehumidifi cation.
18.5

SETTING BLOWER "ON" AND "OFF" TIMINGS

Blower on/off delays are handled by ECM motor programming. The control de-energizes the ECM heat signal
when the gas valve de-energizes. Features of this ECM variable speed motor are that it will deliver a constant
airfl ow within a wide range of external static pressures, and also includes:
Soft Start: This ECM variable speed motor will slowly ramp up to the required operating speed. This feature in
the heating cycle allows the heat exchanger to reach operating temperature before the set heat speed, which
minimizes noise and increases comfort.
Soft Stop: At the end of the heating or cooling cycle, the ECM variable speed motor will slowly ramp down.
This feature allows for increased energy effi ciency, and reduced noise levels.
18.6

CONTINUOUS FAN OPERATION

When the thermostat continuous fan (G) switch is on without a call for heat or cooling, the indoor fan is
immediately energized up to 50% of the cooling speed. The fan remains energized as long as the call for fan
remains without a call for heat or cooling. This feature allows continuous circulation of air between calls for
heating or cooling.
If a call for heat (W) occurs during continuous fan, the blower will remain energized, the call for heat overides
the call for fan.
If a call for cool (Y) occurs simultaneously with the call for fan (G), the call for cool overrides the call for fan.
See Air Flow Data table.
W415-2308 / B / 11.04.19
5A FUSE
24 VAC MOLEX
ICM
INTERFACE
THERMOSTAT
TERMINALS
FAULT CODE
BUTTON
RED STATUS
HEAT STAGING
LED
JUMPER P5
FIGURE 34
H22.4A
H22.5
H22.3.2A