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APPENDIX A — WIRING SCHEMATICS
CHILLER CONTROL SCHEMATIC
NOISE
SUPPRESSOR
VFD COOLANT
SOLENOID
)RLC
(
)K
L
B
(
)
N
RB
(
(BRN)
RMS
+
S
-
RELATIVE
HUMIDITY
(BLK)
(WHT)
(RED)
JUMPER
JUMPER
R
STOP
ICVC
ALARM
J7
J1
J8
5
4
24VAC
3
2G
+
-
1
(RED)
(GRY)
(RED)
(BLK)
(CLR)
SERVICE
6
SW2
1
O
N
32
SWITCH POSITION
SW "ON" = EXT 4-20mA
SW "OFF" = EXT 1-5Vdc
1 "OFF"
2 "ON"
3 "ON"
ALL SWITCHES SET
TO "OFF" POSITION
LOAD RESISTOR
4.3K
LOAD RESISTOR
4.3K
LOAD RESISTOR
4.3K
LOAD RESISTOR
10K
G
+
-
2
1
SP
NOTE: GND SHIELDS AT THIS END ONLY
(RED)
(GRY)
(RED)
)
DLEIHS()
D
L
E
IHS(
(RED)
)
KL
B
()K
L
B(
NCC)
T
HW
(
)RL
C
(
6
J6
J9J10
(BLK)
(WHT)
)TH
W
(
+
-
OIL PUMP
DISCH PRESS
(RED)
(CLR)
(BLK)
100»f
+
+
-
OIL SUMP
PRESS
(RED)
(CLR)
(BLK)
100»f
+
CB2
CB1
(RED)
(GRY)
(GRY) (GRY)
(RED)
(GRY)
2
1
J1
SW1
0
N
12345678
1C
C1
C2
2C
C2 C1
3C
31
(WHT)
(BLK)
(BRN)
HGBP (OPTIONAL)
COMP'R OIL HEATER
COMP'R OIL PUMP
(BLK)
(BRN)
(BRN)
(WHT)
(BRN)
(ORN)
(WHT)
(BLK)
(BLU)
(BLK)
6
5
4
3
2
J12
1
(YEL)
(YEL)
(SHIELD)
4-20mA
4-20mA
EXT
EXT
(1-5vdc)
(1-5vdc)
AUTO DEMAND LIMIT
(OPTIONAL)
AUTO CHILLED WATER
RESET (OPTIONAL)
6
+-+-+-
5432
J5
1
L1
L2
COMMON
G.V. DECREASE
G.V. INCREASE
(SHIELD)
(RED)
(BLK)
GUIDE VANE ACTUATOR
(CLR)
X
2
3
3
1
J11
2
(RED)
(CLR)
(BLK)
(BLK)
(CLR)
(RED)
3
+-
1
J7
234
-+-+
1
J8
2
J3 (LOWER)
13
14
15
16
17
18
19
20
21
22
23
24
+
-
EVAP PRESS
(RED)
(CLR)
(BLK)
+
-
COND PRESS
(RED)
(CLR)
(BLK)
J2
1
2
3
4
5
6
J3 (UPPER)
1
2
3
4
5
6
7
8
9
10
11
12
J4 (LOWER)
15
16
17
18
19
20
21
22
23
24
25
26
27
28
SPARE TEMP #1
(OPTIONAL)
(WHT)
(BLK)
SPARE TEMP #2
(OPTIONAL)
(WHT)
(BLK)
COMP'R
DISCH TEMP
(RED)
(BLK)
1
3
2
COMP'R THRUST
BRG TEMP
(CLR)
(BLK)
(SPARE)
COMP'R OIL
SUMP TEMP
(RED)
(BLK)
1
3
2
COMP'R
MOTOR TEMP
(CLR)
(BLK)
(SPARE)
G.V. POSITION
FEEDBACK
(CLR)
78
10K
4
(BLK)
(SHIELD)
REMOTE TEMP
RESET
(OPTIONAL)
(WHT)
(BLK)
EVAP ENT
WATER TEMP
(RED)
(BLK)
EVAP LVG
WATER TEMP
(RED)
(BLK)
COND ENT
WATER TEMP
(RED)
(BLK)
COND LVG
WATER TEMP
(RED)
(BLK)
EVAP REFRIG
LIQUID TEMP
(RED)
(BLK)
J4 (UPPER)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
CCM
(BLK)
(WHT)
L1
(BLU)
(ORN)
L2
(CLR)
(BLK)
DIFFUSER ACTUATOR
4-20mAkw
OUTPUT
(SHIELD)
*
a19-1946