Use and Care Manual

ManualsBrandsWestinghouse ManualsHeating, Ventilation, and Air ConditioningCondensing 93.2% Combination Liquid Propane Floor Mount Boiler/Water Heater with 140,000 BTU Input

40

WHL-015 REV. 9.4.14

CONNECTOR

DESCRIPTION

HT SELV

NO. OF LOCATION

PIN

BOARD SILK

CN7

LWD1140-14

1

F.S

Flame Detect Sensor

SELV (5V)

8

2

OP.S

Operating Water Temperature Sensor

9

3

DH.S

DHW Temperature Sensor

10

4

I.S

Return Water Temperature Sensor

11

5

BG.S

Exhaust Temperature Sensor

12

6

ST.S

Storage Temperature Sensor

13

7

SP.S

CH Over-Heat Temperature Sensor

14

CN14

SMW250-09

1

DHM

GND

SELV (14V)

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 Power IWM Stepper Motor Coil / Y

Phase

9

Unused

-

CN3

SMW250-06

4

FLUX1

VCC

SELV (5V)

5

Water Flow Sensor

6

GND

CN5

SMW250-10

1

RPM

Fan RPM Check

2

GND

Table 19 – Appliance Wiring 2

Figure 27 – Terminal Block Wiring Detail