Microtech 2300 - Page 27

27
OM 1364
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DEHUMIDIFICATION
Wiring
Figure 14: Thermostat and sensor combination hot gas
reheat smart dehumidication wiring diagram
R
Y2
C
G
Y1
Unit
HST
I/O Exp Board
R 24VAC
Cool Stage 2
Y2
Common
C
FanG
Cool Stage 1Y1
Thermostat
R 24VAC
Dehumid
DH
Humidistat
Figure 15: Thermostat and sensor combination hot gas
reheat smart dehumidication wiring diagram
R
C
G
Y1
Unit
HST
I/O Exp Board
R 24VAC
Common
C
FanG
Cool Stage 1Y1
Thermostat
R 24VAC
Dehumid
DH
Humidistat
Operation
A call for heating or cooling has a higher priority than a call for
dehumidication. Dehumidication is allowed only if the room
temperature is satised and the return air temperature is 68°F or
greater. If the controller detects the need for heating or cooling,
or if the Humidistat is no longer calling for dehumidication,
dehumidication mode will be suspended. Dehumidication
mode will enable the 3-way hot gas bypass valve, sending hot
superheated refrigerant to the hot gas reheat coil while running
the compressor at full load and the fan at dehumidication speed.
NOTICE
See Fan Performance section in catalog for unit size specic fan speeds.
Figure 16: Unit with WSE and HGR thermostat Wiring
Diagram
R 24VACR
Cool Stage 2
Y2Y2
W4
Common
CC
Fan
GG
Cool Stage 1
Y1
Cool Stage 3
Y3
Y1
Unit Thermostat
R 24VAC
Dehumid
DH
Humidistat
HST
I/O Exp Board