15
16
LP-532 REV. 8.13.2014
LP-532 REV. 8.13.2014
Connector
Descriptions
HT
SELV
no. of location and
type
Pin nr. Board Silk
CN9
65001WS-12
1 - Unused -
2 L Power Supply Line HT (120VAC)
3 CP1 Unused HT (120VAC)
4 IT Igniter HT (120VAC)
5 L(HT) Heater HT (120VAC)
6 GV Gas Valve HT (120VAC)
7 EARTH GROUND HT (120VAC)
8 N Power Supply Neutral HT (120VAC)
9-12
N AC Power COM Line HT (120VAC)
CN1
SMW250-03
1
RS-485
RS485 + SELV (5VDC)
2 GND SELV (5VDC)
3 RS485 - SELV (5VDC)
CN4
LWD1140-06
1
FAN
Unused -
2 GND SELV (30VDC)
3 VDD SELV (14VDC)
4 Fan power(start coil) SELV (30VDC)
5 Fan power(end coil) SELV (30VDC)
6 Fan speed feedback signal SELV (14VDC)
CN8
SMW250-04
1
MCU ISP
GND SELV (5VDC)
2 ISP /Reset port SELV (5VDC)
3 ISP TOOL0 Data port SELV (5VDC)
4 VCC SELV (5VDC)
CN11
LWD1140-16
1
HWL Unused -
8
2
LWL Unused -
10
3
HD Unused -
11
4
TH
Connect to the Display Con-
trol(Thermostat)
SELV (14VDC)
12
5
APS Air Pressure Switch SELV (14VDC)
13
6
EL Jumper Wire SELV (14VDC)
14
7
BL Burner Limit SELV (14VDC)
15
8
HL High Limit SELV (14VDC)
16
CN5
SMW250-10
1
RPM
FAN RPM Check SELV(5VDC)
2
GND SELV(5VDC)
Connector
Description
HT
SELV
no.oflocationand
type
Pin
nr.
Board
Silk
CN7
LWD1140-14
1
F.S Flame Detect Sensor SELV(5VDC)
8
2
OP.S Operation water temperature sensor SELV(5VDC)
9
3
DH.S DHW temperature sensor SELV(5VDC)
10
4
I.S
Inlet water temperature sensor SELV(5VDC)
11
5
BG.S Exhaust temperature sensor SELV(5VDC)
12
6
ST.S Unused -
13
7
SP.S Unused -
14
CN12
SMW250-07
1
AGM
AGM Stepper motor coil /Y phase SELV(24VDC)
2
AGM Stepper motor coil Y phase SELV(24VDC)
3
AGM Stepper motor coil /X phase SELV(24VDC)
4
AGM Stepper motor coil X phase SELV(24VDC)
5
GND SELV(24VDC)
6
AGM Stepper motor position SELV(14VDC)
7
VDD SELV(24VDC)
CN10
SMW250-08
1
DHM
DHM Stepper motor coil /Y phase SELV(14VDC)
2
DHM Stepper motor coil Y phase SELV(14VDC)
3
DHM Stepper motor coil /X phase SELV(14VDC)
4
DHM Stepper motor coil X phase SELV(14VDC)
5
GND SELV(14VDC)
6
DHM Stepper motor position SELV(14VDC)
7
Unused SELV(14VDC)
8
VDD SELV(14VDC)
CN14
SMW250-09
1
IWM
GND SELV(14VDC)
2
IWM Stepper motor position SELV(14VDC)
3
VDD SELV(14VDC)
4
IWM Stepper motor coil X phase SELV(14VDC)
5
IWM Stepper motor coil Y phase SELV(14VDC)
6
VDD SELV(14VDC)
7
IWM Stepper motor coil /X phase SELV(14VDC)
8
IWM power IWM Stepper motor coil /Y phase SELV(14VDC)
9
Unused -
CN3
SMW250-06
1
WPS
Unused SELV(5VDC)
2
Unused SELV(5VDC)
3
Unused SELV(5VDC)
4
FLUX1
VCC SELV(5VDC)
5
Water Flow Sensor SELV(5VDC)
6
GND SELV(5VDC)
Chapter 1 Product Characteristics Chapter 1 Product Characteristics
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