Manual 2100-702D
Page
23 of 29
Unit
Operation
Occ.
Signal
Low Voltage 24VAC
Speed Taps
Fan Speed
Comp.
Oper.
Damper
G
Y1
Y2
W1
W2
A
D
1
2
3-4-5
1
Fan Only
Yes
X
X
X
Vent
Off
Min Pos
Fan Only
No
X
X
Vent
Off
Closed
BC Cooling
Yes
X
X
X
X
B Climate
Econ
Min Pos
BC Cooling
No
X
X
X
B Climate
Econ
Closed
Full Load Cool
Yes
X
X
X
X
X
X
Lo/Med/Hi
On
Min Pos
Full Load Cool
No
X
X
X
X
X
Lo/Med/Hi
On
Closed
1st Stage Heat
Yes
X
X
X
Lo/Med/Hi
Off
Min Pos
1st Stage Heat
No
X
X
Lo/Med/Hi
Off
Closed
2nd Stage Heat
Yes
X
X
X
X
Lo/Med/Hi
Off
Min Pos
2nd Stage Heat
No
X
X
X
Lo/Med/Hi
Off
Closed
Dehumidify
2
Yes
X
X
X
X
B Climate
On
Min Pos
Dehumidify
2
No
X
X
X
B Climate
On
Closed
¹
Fan speed is selectable through the blower speed control terminal block. LO (default), MED or HI speeds can be used.
2
Dehumidification operation is disabled when a call for heating or cooling occurs. Unit runs at Balanced Climate speed
during dehumidification operation.
BC and B Climate − Balanced Climate
TABLE 8
Unit Operation with S (Part Flow), Y and Z (Full Flow) Economizer Options
Balanced Climate Mode – S, Y and Z Option
Economizer Sequence of Operation
Balanced Climate can be used for duct free and ducted
applications below 0.2" W.C. ESP total static.
Call for cooling and ECONOMIZER IS NOT AVAILABLE
(due to outdoor conditions):
Y1 energizes mechanical cooling and the Balance
Climate fan speed simultaneously. If the outdoor
conditions are not acceptable, the Y2 terminal will
energize full load compressor and increase the fan
speed to the rated airflow. When the temperature drops
below the Y2 setpoint, the unit will return to part load
and Balanced Climate fan speed. When the cooling
call is satisfied, the compressor will shut down and the
economizer will move to minimum position (ventilation
setting) and the fan will continue to run at RATED
airflow if A is energized on the low voltage terminal
strip.
Call for cooling and ECONOMIZER IS AVAILABLE (due
to outdoor conditions):
Two stage cooling thermostat is required and connector
is disconnected at
JADE
TM
controller to enable
Balanced Climate mode (see wiring diagrams on pages
28 and 29).
Unit has a call for ventilation: Damper to Min position
and fan will run at RATED airflow. (When using
Balanced Climate mode, increase the minimum
position blade setting to allow 28% more outdoor air
CFM than rated.) Y1 energizes economizer and the
Balance Climate fan speed simultaneously. If the
temperature continues to rise, the Y2 terminal will
energize part load compressor and increase the fan
speed to the RATED airflow. When the temperature
drops below the Y2 setpoint, the unit will return to
part load and Balanced Climate fan speed. When the
cooling call is satisfied, the compressor will shut down
and the economizer will move to minimum position
(ventilation setting) and the fan will increase to run
at RATED airflow if A is energized on the low voltage
terminal strip.