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3. Wiring Connection
1) [B13/B14]
‐ Cooling thermo contact signal(output)
‐ Contact short : Cooling thermo on
‐ Contact open : Coollng thermo off or stop
2) [B22/B23]
‐ Free cooling contact signal(input)
‐ Contact short : Free cooling available
‐ Contact open : Mechanical cooling available
3) [Operation by Economizer controller]
‐ Cooling thermo on → Relay1 Close → Y1I Activate → Economizer decide mechanical cooling
→ Y1O Activate → Relay 2 Open(due to normally close relay) → Mechanical cooling start
‐ Cooling thermo on → Relay1 Close → Y1I Activate → Economizer decide free cooling
→ Y1O Deactivate → Relay 2 Close(due to normally close relay) → Free cooling start
Damper Actuators
(Field supplied)
DB68-06643A-03_IM_ACC UCK Kit_AA_EN.indd 23
DB68-06643A-03_IM_ACC UCK Kit_AA_EN.indd 23
AUX2-1
OCC
E-GND
AUX1-0
Y2I
Y2O
Y1I
Y1O
C R
Economizer Controller
(Field supplied)
Universal Comm. Kit
B1
B3
B5
B5
B5
B11 B13 B15
B2
B4
B6
B8
B10
B12 B14
B16
Power
(Field supplied)
open Relay
24Vac Com.
24Vac
B17
B19
B21
B23
B25
B18
B20
B22
B24
B26
Relay 1
Relay 2
Normally
Normally
close Relay
Com.
23
2023-01-13 오전 11:35:12
2023-01-13 오전 11:35:12
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