Laars FT Series, Installation And Operation Instructions Manual

Page: 51 / 92

The FT Series Wall Mounted, Combination Boiler
Page 51
4.23 Electrical Connections
Connector
Description
HT SELV
#, Location, Type PIN Label
CN9
65001WS-12
1 -
GROUND HT (120V~)
2 L
Power Supply Line HT (120V~)
3 CP1 Not Used
HT (120V~)
4 IT Igniter
HT (120V~)
5 L(HT)
Pump : CH HT (120V~)
6
GV Gas Valve HT (120V~)
7
-
- -
8 N
Power Supply Neutral HT (120V~)
9-12
N
AC Power COM Line HT (120V~)
CN6
LW6A4-03
1
CP3/3Way 3 Way Valve
HT (120V~)
3
HT (120V~)
CN1
SMW250-5D
1
RS-485
RS485 + SELV (5V)
2 GND
SELV (5V)
3
RS485 - SELV (5V)
CN4
LWD1140-06D
1
FAN
Not Used -
2 GND
SELV (30V)
3
VDD SELV (14V)
4
Fan power(start coil) SELV (30V)
5
Fan power(end coil) SELV (30V)
6
Fan speed feedback signal SELV (14V)
CN8
SMW250-04D
1
MCU ISP
GND
SELV (5V)
2
ISP /Reset port SELV (5V)
3
ISP TOOL0 Data port SELV (5V)
4
VCC SELV (5V)
CN11
LWD1140-16
1
HWL Not Used
SELV (12V~)
8
2
LWL
Low Water Level Leakage Sensor SELV (12V~)
10
3
HD Central Heating Demand
SELV (5V)
11
4
TH
Connect to the Display
Control(Thermostat)
SELV (14V)
12
5
APS
Jump
SELV (14V)
13
6
EL
Jump
SELV (14V)
14
7
BL Burner Limit
SELV (14V)
15
8
HL
Condensate Block SELV (14V)
16