KWB Easyfire - Page 38

© KWB – Kraft und Wärme aus Biomasse GmbH IM Easyfire 10/2008 Page 39
2 System installation
2 System installation
The pin connectors installed in the undershell of the heating circuit expansion module are pre-wired as shown
below. Comply with the following cable introduction sequence to prevent lines from crossing and to keep the
terminal compartment clear and organized.
HCM terminal compartment
All cables (except bus and sensor) must be connected with YMM 1.5 mm², flexible data / bus cable as specified in
the included connection diagram no. EBAA1018, (section 17).
Do not switch the polarity of the (HCM) supply under any circumstances!
Live parts (pole conductor bars) would be exposed in this process!
After completing and checking the cabling introduce the upper shell with the pin connectors into the block terminals
and join the two shells together, tilt-free, until the locking mechanism engages.
27 remote thermostat HC2
28 remote thermostat HC1
25 Buffer sensor 2 (bottom)
24 Buffer sensor 1 (top)
23 Outdoor sensor
22 DHWC sensor
21 Forward flow sensor HC2
20 Forward flow sensor HC1
19 Reserve
18 GND
17 485 A
16 485 B Bus / 24 VDC
15 +24V
14 GND
13 Reserve
12 Reserve
11 Supply pump
10 DHWC pump
9 Pump HC2
8 Mixer HC2 closed
7 Mixer HC2 open
6 Pump HC1
5 Mixer HC1 closed
4 Mixer HC1 open
3 L
2 N Mains 230 VAC
1 PE
Remote thermostat HC1, 2 Buffer sensor 1, 2 Outdoor sensor DHWC sensor DHWC pump Supply pump Reserve Reserve
Bus / 24 VDC Reserve Forward flow sensor HC 1, 2 Pump HC 2 Mixer HC 2 Pump HC 1 Mixer HC 1 Mains 230 VAC
Earthing bar
Protective conductor bar
Neutral conductor bar
MA-Easyfire 10.2008_EN.indd 39MA-Easyfire 10.2008_EN.indd 39 30.03.2009 13:30:04 Uhr30.03.2009 13:30:04 Uhr