HTP EFTC-199W - Page 47

47
LP-520 REV. 5.1.17
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
External CH Pump
4
IT
Ignitor
5
L(HT)
Internal Pump
6
GV
Gas Valve
7
-
-
8
N
Power Supply Neutral
9-12
AC Power COM Line
CN6
LW6A4-03
1
CP2/3WAY
3 Way Valve
3
CN1
SMW250-03
1
RS-485
RS485 +
SELV (5V) DC
2
GND
-
3
RS485 -
SELV (5V) DC
CN4
LWD1140-06
1
FAN
NOT USED
-
2
GND
SELV (14V) DC
3
VDD
SELV (14V) DC
4
Fan power (start coil)
SELV (8~26.5V) 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
Low Water Level Leakage Sensor
10
3
HD
Central Heating Demand
SELV (5V) DC
11
4
TH
Connect to the Display Control
(Thermostat)
SELV (14V) DC
12
5
APS
Air Pressure Switch
13
6
EL
NOT USED
14
7
BL
Burner Limit
15
8
HL
Condensate Block
16
Table 19 – Appliance Wiring 1