6 (15)
EN.33.C.94.1702
Assembly instructions | LK Electric Boiler 11-n
Switching off
12
34
6
7
Switch 1 in position OFF
The output can be switched off by an external
de-energised contact, e.g. room thermostat. Open
contact causes stepped reduction in output. Con-
nection is made to the base of the circuit board.
The existing link between terminals 2–3 is remo-
ved.
Output control with 0-10V signal
1
2
3
4
GND 0-10Vdc
6
The boiler’s output control is arranged via 0 –
10V DC signal, which corresponds to 0% - 100%
of the installed capacity, see below. Connection is
made to the base of the circuit board. The existing
link between terminals 2 – 3 is removed.
0-10V variable output
1
2
3
4
GND
0-10V
6
Assisted by transformers, the loading relay mea-
sures loading affecting the main fuses. Fuse size,
16 - 50 A, situated on the circuit board.
The transformers are located on the wire from
the fuses and must be protected. Connection is
made to the base of the circuit board using high-
current-insulated cable, minimum 0.75 mm
2
. The
earth (grounding) is connected using terminal 4.
The transformers do not need to be connected if
this function is not intended to be used.
Remote control / Switching off
One of the inputs on the circuit board has a dif-
ferent function depending on switch SW 4/1. The
functions cannot be used simultaneously.
1. Remote control, which depends on the in-
put status, switches between normal tempe-
rature mode and low temperature mode.
2. Switching off the entire boiler output.
Remote control
1
2
34
Switch 1 in position ON
7
6
8
Example; this function can be used to maintain
a low temperature for frost protection when the
house is not occupied. By connecting the system
to phone-based control, the temperature can be
varied by making a phone call. The contact fun-
ction in the control unit must be de-energized.
Open between 2 – 3, temperature corresponds to
the setting shown in item 8.
Shut between 2 – 3, ordinary temperature set-
ting.
