6.4.2
Electrical connections of the boiler
Access the connection board located below the control panel to make the
electrical connections by:
1. Fully unscrewing the two screws retaining the electrical cover at the
bottom of the front panel and then remove the cover.
2. Connect the electrical power supply to the X1 terminal on the
connection board as shown on the label located on the inside of the
electrical cover. Route the cables to the rear using the integral
channel guides. Additional cable ties can be used if 5–core cable is
used.
Important
The blue X1 Mains terminal block can be removed to ease the
access for wiring.
X1
Electrical power supply 230V~50Hz
X4
230V Room thermostat (remove the link)
X6
Not used
X7
Not used
X8
On/Off — R-Bus — Low voltage/voltage free Room thermostat
(remove the link)
X9
Service connection (PC)
X13
L-Bus connection
X14
Outside sensor (OS) connection
1
.
X14 – 1. Outside sensor
2
.
X14 – 2. Common
J
Dip-switch
1
.
J1. Maximum heating temperature: OFF = 80°C = 45°C (floor
system)
2
.
J2. OFF = Maximum output (heating) — ON = Boiler output 50%
(heating)
3
.
J3. DO NOT ADJUST!
See
Electrical diagram, page 19 for more information.
6.4.3
Connecting a room thermostat
The terminals can be accessed by removing the electrical cover as
described in Electrical connections of the boiler, page 43.
230V Room Thermostat
When using a 230V Room Thermostat it must be connected to Terminal
X4 on circuit board B. See diagram.
The X4 link wire must be removed from the terminal.
Important
The X4 terminal block for the 230V Room Thermostat can be
removed to ease the access for wiring.
Low Voltage/Voltage Free Room Thermostat
These connections are not polarity sensitive.
When using a Low voltage/Voltage free Open Therm type room thermostat
it must be connected to Terminal X8 on connection board B. See diagram.
The X8 link wire must be removed from the terminal.
Replace the electrical cover and secure with the 2 screws.
Fig.37
Electrical connections
PN-0000518
1
2 3 4 5
1
2 3 4 5 6 7
1
2
1
1
2 3
Br
Br
Bl
Bk
Gy
Bl
Bk
W
Gn
Br
R
G/Y
SERVICE
X7
X6
F2
0.5A
X14
OS
X13
J
X9
L-BUS
B
X12
X11
X10
X3
TIMER
X2
X5
230V - 50Hz
L
N
X1 MAINS
X4
RT
X8
OT
Bk
W
Gy
Vt
Br
Bl
R
3
On
Off
2 1
B
6 Installation
7696317 - 1 - 21032018
43
Содержание Combi 200
Страница 81: ...14 Appendix 7696317 1 21032018 81...
Страница 82: ...14 Appendix 82 7696317 1 21032018...