Use And Care Manual

whl-590 Rev. 003 Rel. 003 Date 3.22.18
44
Connector
Description HT SELV
No. of Location Pin Board Silk
CN7
LWD1140-14
1
F.S Flame Sensor
SELV (5V)
8
2
OP.S
Outlet Operating Water Temperature
Sensor
9
3
DH.S DHW Temperature Sensor
10
4
I.S Inlet Water Temperature Sensor
11
5
BG.S Exhaust Temperature Sensor
12
6
ST.S Return Water Temperature Sensor
13
7
SP.S Overheat Temperature Sensor
14
CN10
SMW250-08D
1
IWM
(Flow Control Valve)
IWM Stepper Motor Coil / Y Phase
SELV (14V)
2
3
IWM Stepper Motor Coil / X Phase
4
5 GND
6 IWM Stepper Motor Position
7
VDD
8
CN14
SMW250-09D
1
DHM
(Mixing Valve)
GND
2 DHM Stepper Motor Position
3 VDD
4 DHM Stepper Motor Coil X Phase
5 DHM Stepper Motor Coil Y Phase
6 VDD
7 DHM Stepper Motor Coil X Phase
8 DHM Stepper Motor Coil Y Phase
9 NOT USED
CN3
SMW250-06D
1
APS Sensor
VCC -
2 GND
SELV (5V)
3 Voltage Input
4
FLUX1
VCC
5 Water Flow Sensor
6 GND
Table 21 - Water Heater Wiring 2