Westinghouse WBRC 140 Series Installation, Start-Up, Maintenance, Parts, Warranty page 42

42
Connector
No. of Location
CN9
65001WS-12
CN6
LW6A4-03
CN1
SMW250-03
CN4
LWD1140-06
CN8
SMW250-04
CN11
LWD1140-16
Table 21 - Boiler Wiring 1
whl-648 Rev. 001 Rel. 003 Date 10.8.19
Pin Board Silk
1
2 L
3 CP1
4 IT
5 L/(HT)
6 GV
7
8 N
9-12
1
CP2/3WAY
3
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
APS
13
6
EL
14
7
BL
15
8
HL
16
Description
GROUND
Power Supply Line
External CH Pump Power Supply (Live)
Ignitor Power Supply
Internal Pump Power Supply (Live)
Gas Valve Power Supply
-
Power Supply (Neutral)
AC Power COM Line
3 Way Valve
RS-485 +
GND
RS-485 -
NOT USED
GND
VDD
Fan power (start coil)
Fan power (end coil)
Fan speed feedback signal
GND
ISP / Reset Port
ISP TOOL0 Data Port
VCC
NOT USED
Low Water Level Sensor
Central Heating Demand (T/T)
Display Control
Flue Air Pressure Switch
NOT USED
Burner High Limit
Condensate Air Pressure Switch
HT Selv
HT (120V~) AC
SELV (5V) DC
-
SELV (14V) DC
SELV (8 - 26.5V) AC
SELV (14V) DC
SELV (5V) DC
SELV (12V~) AC
SELV (5V) DC
SELV (14V) DC