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420010970304 - LP-700 Rev. 000 Rel. 002 Date 4.21.21
55
Connector
Description
HT Selv
No. of Location
Pin
CN1
POWER SUPPLY
1
120 VAC LIVE INPUT
HT (120V~) AC
2
120 VAC NEUTRAL INPUT
3
PROTECTIVE EARTH
CN2
EXTERNAL PUMP 2 / Hi-V DIVERTER VALVE
(DHW)
1
120 VAC EXT. PUMP2 INPUT / 120VAC LINE DIV1
HT (120V~) AC
2
120 VAC NEUTRAL
3
120 VAC EXT. PUMP2 (NO) / 120VAC LINE DIV2
BOILER PUMP
4
120 VAC LIVE (NO)
5
120 VAC NEUTRAL
EXTERNAL PUMP 1
(CH)
6
120 VAC EXT. PUMP1 INPUT
7
120 VAC EXT. PUMP1 (NO)
CN3
FAN ON/OFF
1
120 VAC LIVE
HT (120~) AC
2
120 VAC NEUTRAL
IGNITER
3
120 VAC LIVE (NO)
4
120 VAC NEUTRAL
GAS VALVE
5
120 VRAC + (NO)
6
120 VRAC - (NO)
CN8
POWER SUPPLY OUT
1
120 VAC LINE
HT (120V~) AC
2
120 VAC NEUTRAL
CN4
PROTECTIVE EARTH
1
CN7
PROTECTIVE EARTH
1
CN9
PROTECTIVE EARTH
1
CN26
NTC HEAT RETURN
1
+5V
SELV (5V)
2
CH RETURN NTC SENSOR SIGNAL
NTC HEAT FLOW 1
3
+5V
4
CH FLOW 1 NTC SENSOR SIGNAL
5
NOT USED
6
NTC FLUE
7
+5V
8
FLUE NTC SENSOR SIGNAL
AIR PRESSURE SWITCH
9
+24V
SELV (24V)
10
APS DETECTION SIGNAL
11
NOT USED
12
CN20
DHW FLOW SWITCH
1
GROUND
SELV (5V)
2
DHW FLOW DETECTION SIGNAL
WATER PRESSURE SWITCH
3
+5V
4
GROUND
5
CH WATER PRESSURE SENSOR SIGNAL
6
NOT USED
7
DIVERTER VALVE
8
STEPPER DIVERTER VALVE COIL 1 START
9
STEPPER DIVERTER VALVE COIL 1 END
10
STEPPER DIVERTER VALVE COIL 2 START
11
STEPPER DIVERTER VALVE COIL 2 END
Table 20 - Boiler Wiring - 1