MASCOT MSTWW, Installation And Operation Instructions Manual

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LAARS Heating Systems
Page 38
4.21 Electrical Connections
Connector
Descriptions HT SELV
#, Location, Type PIN Label
CN9
65001WS-12
1 - CASE GROUND -
2 L Power Supply Line HT (120VAC)
3 CP1 Not Used 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 RS485 - SELV (5VDC)
3 - -
CN4
LWD1140-06
1
FAN
Not Used -
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 Not Used -
8
2
LWL Not Used -
10
3
HD Not Used -
11
4
TH
Connect to the Display
Control(Thermostat)
SELV (14VDC)
12
5
APS Air Pressure Switch SELV (14VDC)
13
7
BL Burner Limit SELV (14VDC)
15
8
HL High Limit SELV (14VDC)
16