Westinghouse WGRT 150 Series Installation Start-Up Maintenance Parts page 51

CONNECTOR
NO. OF LOCATION
CN9
65001WS-12
CN1
SMW250-03
CN4
LWD1140-06
CN8
SMW250-04
CN11
Table 24 – Water Heater Wiring 1
PIN BOARD SILK
1 -
2 L
3 CP1
4 IT
5 L(HT)
6 GV
7
8 N
9-12
1
2 RS-485
3
1
2
3
FAN
4
5
6
1
2
MCU ISP
3
4
1
HWL
8
2
LWL
10
3
HD
11
4
TH
12
5
Condensate APS
13
6
Flue APS
14
7
BL
15
8
HL
16
DESCRIPTION
UNUSED
Power Supply Line
UNUSED
Ignitor
Ceramic Heater (Freeze Protection)
Gas Valve
EARTH GROUND
Power Supply Neutral
AC Power COM Line
RS485 +
GND
RS485 -
Unused
GND
VDD
Fan power (start coil)
Fan power (end coil)
Fan speed feedback signal
GND
ISP / Reset Port
ISP TOOL0 Data Port
VCC
Unused
Water Leak Sensor (150 model only)
Unused
Connect to the Display Control
(Thermostat)
Condensate Air Pressure Switch
Flue Air Pressure Switch
Burner Limit
Water High Limit
51
HT SELV
-
HT (120V~)
SELV (5V)
-
SELV (30V)
SELV (14V)
SELV (30V)
SELV (14V)
SELV (5V)
-
SELV (14V)
WHL-004 REV. 5.26.17