Ecoer EAHAEC-36 - 5.10.4 Control Logic

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SDi Decades Extreme Service Manual www.ecoer.com
May. 2023Manufacturer reserves the right to change specifications or designs without notice.
4. Dehumidification control wiring
ON
1 2
S4
DH
R
HUMIDISTAT
Dehumidification control requires indirect humidifier at DH and R. Set S4-2 as OFF. When the humidity rises and
exceeds the set value of the humidifier, the 24V
signal of DH changes to 0V, the cooling system starts the dehumidification operation, and the air volume drops
to 80 % of the nominal cooling air volume.
When the partition control, DH is connected to the DH port of the partition controller. When the 24V signal of
DH changes to 0V, the air volume drops to 8 0 % of the nominal refrigeration air volume.
5. UV, fresh air or negative ion wiring
The WORK port is linked with the fan. When the fan is running, the relay is closed; if an active 24V signal is
required, it can be directly connected to the G and C ports.
work
24V control signal or 208/230V power supply
UV, fresh wind or
negative ions, etc
CN33
5.10.4 Control Logic
Indoor unit Connector
Connector
Purpose
R
24V Power Connection
C
Common
G
Fan Control
Y1
Low Cooling
Y/Y2
High Cooling
B
Heating Reversing Valve
W
Heating Control
W1
Stage 1 Electric heating
W2
Stage 2 Electric heating
E/AUX
Emergency heating
DH/DS/BK
Dehumidification/Zoning control
L
System Fault Signal
Outdoor unit Connector
Connector
Purpose
R
24V Power Connection
C
Common
Y1
Low Cooling
Y2
High Cooling
B
Heating Reversing Valve
W
Heating Control
D
Dehumidification control
L
System Fault Signal