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Contractor: P.O.:
Engineer:
Project Name:
Unit Tag:
SD2552WNB 09/16
26
Page _____ of _____
ENVISION
2
NKW
REVERSIBLE CHILLER - 50Hz
Wiring Schematics cont.
Reversible Chiller HydroLink Aurora 150 Series
ABC SW2 Accessory Relay
DESCRIPTION
SW2-4
SW2-5
Not Used
ON
ON
Cycle with Compressor
OFF
OFF
Water Valve Slow Opening
ON
OFF
Not Used
OFF
ON
L1
L2
L3
L2
L1
L3
Black(A)
Red(C)
White(B)
F4
F5
F6
Di sconnect handle
(throug h the door )
Unit Power Supply
L1
L2
L3
L2
L1
L3
G
Di sconnect (fus ed disc onnect op
Ɵ
onal)
F1
F2
F3
L1
L2
L3
L2
L1
L3
F7
F8
F9
Co
m
p 1
F
us
es
Co
m
p 2
Fu
se
s
Black(G)
White(H)
Red(J)
Compressor A
CCA
T1
L1
T2
L2
T3
L3
Red (M)
White (L)
Black (K)
T1
T2
T3
Compressor B
CCB
T1
L1
T2
L2
T3
L3
Red (Q)
White (P)
Black (N)
T1
T2
T3
Green / Yellow (G1)
Green / Yellow (G2)
Black (N)
White (P)
Red (Q)
24
V
Tr
an
sf
or
m
er
Black
F19
F20
3
2
1
Phase
Guard
Monitor
(PGM)
Red (AA)
White (AB)
Bl
ac
k (
AC
)
Red (AD) White (AE)
Black (AF)
Black/White
Yellow
Black (65)
White (66)
Red (67)
Black (64)
Black (63)
PB1
2
1
3
Class 2
T2
S2
S1
T1
T3
L
N
T2
S2
S1
T1
T3
L
N
Compressor
Protec
Ɵ
on
M odule #1
(CPM1)
Compressor
Protec
Ɵ
on
M odule #2
(CPM2)
S1
S2
S1
S2
Bl
ue
Bl
ue
Bl
ue
Bl
ue
Black (70)
1)
Re
d/
W
hit
e (
73)
Bl
ac
k/W
hit
e (
72
)
Grn/Ylw (74)
Green/Yellow
(75)
Tr
an
sf
or
m
er
120
V
L N
(AC)
-V
+V
+
ADJ
Power Supply 5V
L N
(AC)
-V
+V
+
ADJ
Power Supply 15V
Wireless Router
Power USB
Tablet
RJ-45
(LA N 2)
P OWER
EX-30
EX-51
Red (80)
Black (81)
Green/Yellow (82)
Brown (30)
Brown/White (51)
Red (76)
Black (77)
Bl
ac
k (
77
)
Re
d (7
6)
Black (79)
Red (78)
Gr n/Ylw
(83 )
Gr
n/
Yl
w (
84
)
Bl
ac
k
Bl
ac
k/
W
hi
te
Bl
ac
k
Re
d
Black/White (99)
Yellow (100)
Black/White (101)
Yellow (102)
24
V
Tr
an
sf
or
m
er
Red for 208V
Blue for 230V
Red for 460V
Blue for 575V
Class 2
Black
Yellow
Black/White
Red for 208V
Blue for 230V
Red for 460V
Blue for 575V
Note 3
