Manual 2100-703
Page
16 of 40
Units with an economizer will not have the brass jumper
installed. Refer to vent manuals for instructions on how
Balanced Climate works with each vent.
To operate in Balanced Climate mode, a 2-stage cooling
thermostat is required. The lower indoor airflow operation
is overridden by utilizing a 2-stage thermostat. If the call
for cooling is not satisfied within a given time frame or
temperature differential (specified by the thermostat),
the thermostat will send a signal to Y2 which then
increases the blower speed back to the selected speed.
See pages 33 – 35 for blower speed selection options.
Refer to page 21 for additional Balanced Climate
requirements and limitations.
Dehumidification Feature (Optional)
The D terminal is the 24VAC input for dehumidification
operation on dehumidification hot gas reheat equipped
units. When 24VAC is applied to the D terminal, a
3-way valve solenoid is energized. The reheat coil
located behind the evaporator coil is then active to
reheat the supply air during cooling mode. This allows
humidity to be removed from the air entering the unit
without a large amount of sensible cooling capacity.
During dehumidification, the indoor blower speed is
reduced to help with the humidity removal. A humidity
sensing thermostat or humidistat is required to control
dehumidification operation.
Ventilation Features (Optional)
See ventilation instructions provided with unit for low
voltage wiring.
Alarm Relay Feature (Controls Option)
The alarm relay provides a set of NO (normally open)
and NC (normally closed) pilot duty contacts that
operate when the compressor control module locks out
compressor operation because of a high or low system
refrigerant pressure event.
Dirty Filter Switch Indicator (DFS)
The switch is adjustable and measures pressure drop
across the unit filter surface. When pressure drop is
higher than the switch setting, NO contacts are provided
to indicate the filter needs to be serviced.
Standard Units
Units w/
Economizers
Fan Only
Energize G
Energize G
1st Stage
Cooling Mode/
Balanced Climate
Energize Y1, G
Energize Y1, G
2nd Stage
Cooling Mode
Energize Y2 to
overide Balanced
Climate mode
when Y1-Y2
jumper is
removed
Energize Y1, Y2, G
1st Stage Heating
Energize B/W1
Energize B/W1
2nd Stage Heating
(if employed)
Energize B/W1, W2
Energize B/W1, W2
Ventilation
Energize A
Energize A
Dehumidification
(if employed)
Energize D
Energize D
Emergency Heat
Energize G, W2,
W3
Energize G, W2,
W3
TABLE 3
Low Voltage Connections
