Wiring diagrams
35
Factory low voltage wiring
Factory high voltage wiring
Field low voltage wiring
Field line voltage wiring
Optional block
Internal PCB connection
Quick connect terminal
Screw terminal
CC
Compressor contactor
BR1
Fan relay speed 1
BR2
Fan relay speed 2
HP
High pressure switch
LP
Low pressure switch
FP1
Freeze protection water side
FP2
Freeze protection air side
CO
Condensate overflow
RV
Reversing valve
DAT
Discharge air temperature
LWT
Leaving water temperature
Relay coil
Capacitor
High pressure switch
Low pressure switch
Temperature thermistor
Condensate switch
Relay contacts
Legend
Wiring diagram
208-230V, standard and high static
Notes
1. Used for optional communicating thermostat.
2. Cut JP1 or JP2 for dry contact output on accessory relay 1 and 2.
3. If a single stage thermostat is used place a jumper wire between
Y1 and Y2 at P1 terminal.
4. If disconnect option is not installed connect line power to the L1
and L2 lugs on the compressor contactor.
5. Accessory relays 24VAC max. Activated by compressor output.
6. All 208-230V units are factory wired for 208V operation. If supplier
voltage is 230V, installer must rewire transformer.
R
RC
C
Y1
AL
G
O
Y2
Note 3
Typical 24VAC
2-Stage stat
4
L1
Com2 modbus address
8
J1
1
2
3
ORANGE 240V
Brown
Black
Blue
Yellow
White
Red
Yellow
O
W
AL
G
Y2
Y1
C
R
Note 2
Note 2
ES
NSB
JP1
JP2
P3
COM
NC2
COM
NC1
NO2
NO1
R
R
COM 2
COM
COM 1
Note 4
Optional
Disconnect
Switch
G
208-230V/60HZ/1PH
Power Supply
Unit
L1
L2
T2
T1
CC
Blue
Black
7
8
5
6
3
4
1
2
7
8
5
6
3
1
2
Orange
Orange
Red
Red
Black
Black
CO1
RV
LP
HP
FP1
T
FP2
T
LWT
DAT
T
T
Black
Black
Com2 modbus address
7
6
5
4
3
2
1
Com2 modbus address
Com2/com1
RV=Cooling OFF/ON
Tstat=Comm/24VAC
FP1=GLYCOL / WATER
Test/Normal
SW1
Off/On
Power
LD 1
CCG
CC
CC
P6
HP
LP
RV
co
1
2
3
4
5
6
7
8
8
LWT
DAT
FP1
FP2
1
2
3
4
6
5
7
White
Orange
BLACK COM
Blue
Orange
Yellow
Note 1
LD 4
LD 3
LD 2
H
Motor
Blower
PSC
M
L
L2
Grn
Yel
Gry
Cap
Transformer
24V
R
P5
C
BR2
BR1
P4
P2
P1
S
C
Compressor
R
Zone valve
+
(A)
-
(B)
+
(NETA)
-
(NETB)
24VAC
+-
Field
installed
wiring
Connect to
network
L2
Note 5
ACCESSORY
RELAY 1
ACCESSORY
RELAY 2
Brown
Black
White
Black
Yellow
Yellow
White
Black
Black
See blower
speed wiring
chart for wire
colors
RED 208V
Blue
Capacitor
CAP
Optional
BACnet or
Lonworks card
See Note 6
Blower speed wiring
Unit
size
Orange Brown
Blue
Red
09
Low
High
12
Low
High
15
Low
High
18
Low
High
24
Low
High
30
Low
High
36
Low
High