lp-673 Rev. 000 Rel. 001 Date 8.30.18
32
Table 20 - Water Heater Wiring 1
Connector
Description
HT Selv
No. of Location
Pin
Board Silk
CN9
65001WS-12
1
GROUND
HT (120V~) AC
2
L
Power Supply Line
3
CP1
Heater Pump Power Supply (Live)
4
IT
Ignitor Power Supply
5
HEAT/CP2
System Pump Power Supply (Live)
6
GV
Gas Valve Power Supply
7
-
8
N
Heater Pump Power Supply (Neutral)
9-12
Power Supply (Neutral)
CN6
LW6A4-03
1
CP2/3WAY
NOT USED
3
NOT USED
CN1
SMW250-03
1
RS-485
RS-485 +
Cascade
Connection
SELV (5V) DC
2
RS-485 -
3
-
4
RS-485 +
5
RS-485 -
CN4
LWD1140-06
1
FAN
NOT USED
-
2
GND
3
VDD
SELV (14V) DC
4
Fan power (start coil)
SELV (8 - 26V) AC
5
Fan power (end coil)
6
Fan speed feedback signal
SELV (14V) DC
CN8
SMW250-04
1
MCU ISP
GND
SELV (5V) DC
2
ISP / Reset Port
3
ISP TOOL0 Data Port
4
VCC
CN11
LWD1140-16
1
HWL
NOT USED
SELV (12V~) AC
8
2
LWL
Water Level Sensor
10
3
HD
NOT USED
SELV (5V) DC
11
4
TH
Display Control
SELV (14V) DC
12
5
APS
Flue Air Pressure Switch
13
6
EL
Jumper
14
7
BL
Burner High Limit
15
8
HL
Condensate Air Pressure Switch
16