Instructions / Assembly

45
WHL-590 REV. 7.27.16
CONNECTOR
DESCRIPTION
HT SELV
NO. OF LOCATION
PIN
BOARD SILK
CN9
65001WS-12
1
-
CASE GROUND
-
2
L
Power Supply Line
HT (120V~)
3
CP1
Internal Pump
4
IT
Ignitor
5
HEAT/CP2
External Pump
6
GV
Gas Valve
7
EARTH GROUND
8
N
Power Supply Neutral
9-12
AC Power COM Line
CN6
LW6A4-03
1
CP2/3WAY
Solenoid Valve Power Supply (Live)
3
Solenoid Valve Power Supply (Neutral)
CN1
SMW250-05D
1
RS-485
RS485 +
SELV (5V)
2
RS485 -
3
-
4
RS485 +
5
RS485 -
CN4
LWD1140-06D
1
FAN
Unused
-
2
-
-
3
VDD
SELV (14V)
4
Fan power (start coil)
SELV (8 – 26V)
5
Fan power (end coil)
6
Fan speed feedback signal
SELV (14V)
CN8
LWD1140-16
1
MCU ISP
GND
SELV (14V)
2
ISP / Reset Port
SELV (5V)
3
ISP TOOL0 Data Port
4
VCC
CN11
LWD1140-16
1
HWL
Water Leak Detection Sensor
SELV (14V)
8
2
LWL
Water Level Sensor
10
3
HD
Heat Demand Switch (T/T)
SELV 5V)
11
4
TH
Display Control
SELV (14V)
12
5
Condensate APS
Condensate Air Pressure Switch
13
6
Jumper
Jumper
-
14
7
BL
Burner High Limit
SELV (14V)
15
8
HL
Water Temperature High Limit
16
Table 21 – Water Heater Wiring 1