Airedale Condensing Units (CU) 3kW - 80kW - Manual (Page 11)

Condensing Units CU 1
– 4
11
Condensing Units
11
Technical Manual : 904-020 v1.3.0 02_13
Field Connections
MICROPROCESSOR
CONTROLLED (AD05) L1 
N  Mains Incoming 230/1/50
E 
S1A  Communication Connection
S1B  To Indoor Unit (Microprocessor Only)
COOL 
COM 
HEAT 
External Control of Cool/Heat mode (Volt Free) (1)
A3  Optional Auxiliary Alarm
A3  Volt Free Input (Normally Closed = Healthy)
DS1  Defrost Status Indication
DS2  Volt Free Contact (Normally Closed = Defrosting)
CCA  Common
CA1  Normally Closed Contact
CONDENSING UNIT
CA2  Normally Open Contact
Common Alarm Changeover
Volt Free Contacts
SYSTEM FIELD
CONNECTIONS FOR
AD05 CONTROLLED
UNITS L1 L1
N N
E E
S1A  S1A
INDOOR UNIT
S1B  S1B
AD05 CONTROLLED
OUTDOOR UNIT
(1) The microprocessor (AD05) controlIed condensing unit may be matched to non Airedale indoor
air handling units.
A contact can be closed across either the Cool and Common or Heat and Common terminals.
Ensure that the cooling and heating cannot be initialised simultaneously.
ELECTRO-MECHANICALLY CONTROLLED UNITS
Cooling Only Units L1
L2
L3  Mains Incoming 230/1/50 or 400/3/50
N
E
34  Compressor Signal From Indoor Unit
576 
577 
Cooling Signal From 24vac controlled Indoor Unit
589
502  589/502 Volt Free Contact for Unit Trip Indication
CU.1 - 4
N1  Control Neutral (if required)
Heat Pump Units L1
L2
L3  Mains Incoming 230/1/50 or 400/3/50
N
E
34  Compressor Signal From Indoor Unit
35  Cooling Signal From Indoor Unit
36  Defrost Signal From Indoor Unit
589
502  589/502 Volt Free Contact for Unit Trip Indication
CUH. 1 - 4
N1  Control Neutral (if required)