Westinghouse WBRC 140 Series Installation, Start-Up, Maintenance, Parts, Warranty page 43

No. of Location
CN7
LWD1140-14
CN14
SMW250-09
CN3
SMW250-06
CN5
SMW250-10
Table 22 - Boiler Wiring 2
Connector
Pin Board Silk
1
F.S
8
2
OP.S
9
3
DH.S
10
4
I.S
11
5
BG.S
12
6
ST.S
13
7
SP.S
14
1
2
3
4
5
DHM
6
7
8
9
4
5 FLUX1
6
1
RPM
2
Figure 35 - Terminal Block Wiring Detail
Description
Flame Sensor
Operating Water Temperature Sensor
DHW Temperature Sensor
NOT USED
Exhaust Temperature Sensor
NOT USED
Overheat Temperature Sensor
GND
DHM Stepper Motor Position
VDD
DHM Stepper Motor Coil X Phase
DHM Stepper Motor Coil Y Phase
VDD
DHW Stepper Motor Coil / X Phase
DHM Power IWM Stepper Motor Coil
/ Y Phase
NOT USED
VCC
Water Flow Sensor
GND
Fan RPM Check
GND
whl-648 Rev. 001 Rel. 003 Date 10.8.19
43
HT SELV
SELV (5V)
SELV (14V)
-
SELV (5V)