WIRING DIAGRAM
–
RSSM878SC, RSSD878SC
ELECTRONIC TEMPERATURE CONTROL
SELF CONTAINED
W
BL (OR) W
G
1
2
3
4
5
6
7
8
9
10
11
ANTI-SWEAT HEATER
W
BLK
RANCO
CONTROLLER
BLK
BLK
BLK
Y
BLK
R
W
W W
BLK
BLK
BLK
BLK
G
FLOAT SWITCH
R
R
18GA.
18GA.
18GA.
14GA.
R
BLK
R
W
SPLICE
SPLICE
BLK
FAN
FAN
BLK
M
PLUG
PLUG
M
PLUG
PLUG
W
G
BL
DUAL PRESSURE CONTROL
PART OF COMPRESSOR "A" ASSEMBLY
Y
DEFROST PROBE PB2
DISPLAY
RIBBON CABLE
TEMP. PROBE PBI
12GA.
14GA.
14GA.
14GA.
BLK
W
W
M
BLK
BR (OR) BLK
CONDENSATE "A" PUMP,
W
BLK
GROMMET FOR
MAIN WIRE
HARNESS
FAN MOTOR LEAD REMOVED FROM TERMINAL 5
AND WIRED TO RUN 100%
(FAN MOTOR TO RUN 100%
DOES NOT CYCLE WITH COMPRESSOR)
14GA.
R
BL
Y
Y
G
BL
SWITCH
LIGHT
LIGHTING
COMBINATIONS
WIRE LEADS FROM BALLAST
TOP OR BOTTOM WIRE COMBINATION
W
BLK
LIGHTING CIRCUIT
SCHEMATIC DETAILS
ON DRAWING 91-19136
AS PER ORDER
Y
BL
R
BL
BL
W
BLK
Y
R
BL
R
12GA.
12GA.
12GA.
12GA.
BLK
14GA.
14GA.
14GA.
14GA.
14GA.
18GA.
14GA.
14GA.
120/240 VOLTS
60 HERTZ
1 PHASE
USE COPPER CONDUCTORS
UNIT MUST BE GROUNDED
SUPPLY CONNECTIONS
ONLY FOR POWER
FIELD WIRING BOX
MUST USE NEMA L14-30R
GROUND
BLK
BLK
POWER CORD WITH
NEMA L14-30 PLUG
G
OPTIONAL POWER CORD
W
R
DUAL PRESSURE CONTROL
PART OF COMPRESSOR "B" ASSEMBLY
Y
FAN MOTOR LEAD REMOVED FROM TERMINAL 5
AND WIRED TO RUN 100%
(FAN MOTOR TO RUN 100%
DOES NOT CYCLE WITH COMPRESSOR)
G
R
BLK
G
R
BLK
BLK
14GA.
14GA.
14GA.
18GA.
FAN
FAN
M
PLUG
PLUG
M
PLUG
BLK
W
R
BL (OR) W
G
FLOAT SWITCH
M
G
BR (OR) BLK
CONDENSATE "B" PUMP,
CONDENSER
FAN
"A" BOX
18GA.
BLK
14GA.
14GA.
14GA.
G
R
BLK
14GA.
14GA. 14GA.
G
R
BLK
R
R
Y
Y
Y
Y
"B" BOX
BLK
14GA.
COMPRESSOR "B"
COMPRESSOR
RELAY
COMPRESSOR "A"
COMPRESSOR
RELAY
CONDENSER
FAN
4
5
1
2
4
5
1
2
BLK
14GA.
14GA.
14GA.
14GA.
14GA.
RECEPTACLE
14GA.
TEMP. PROBE PBI
DEFROST PROBE PB2
14GA.
18GA.
18GA.
W
W
R
BLK
Y
BLK
CAREL
CONTROLLER
1110 9 8
76 5
4
OPTIONAL CONTROL
SELF CONTAINED RSSM & RSSD 878
RANCO CONTROL CIRCUIT
91-19136-17 8-23-12 CHM
REVISED 09/08/16 BJW A
03/02/18 BJW B
240V.
120V.
120/240 VOLTS
60 HERTZ
1 PHASE
BLK
OR
RED
BLK
OR
RED
POWER IN
POWER IN
W
R
BLK
G
OPTIONAL POWER SWITCH
USE COPPER CONDUCTORS
UNIT MUST BE GROUNDED
SUPPLY CONNECTIONS
ONLY FOR POWER
FIELD WIRING BOX
OPTIONAL 240V 1200W
CONDENSATE EVAPORATOR
BR
Y/G
BL
Y/G
BL
BR
PTC HEATER
G
BLK
R
M
EXHAUST FAN
NOTE: EXHAUST FAN MOTOR
USED ONLY ON CASES
WITH FRONT AIR DISCHARGE
G
R
BLK
W
OPTIONAL 115V 1500W FIELD INSTALLED
CONDENSATE EVAPORATOR,
W = WHITE
R = RED
BR = BROWN
G = GREEN
BL = BLUE
Y = YELLOW
COLOR CODE
BLK = BLACK
Y/G = YELLOW/GREEN STRIPE
PTC HEATER
Refrigerated Self-Serve Merchandiser (High Profile)
Page 55