10
EN.33.C.152.1405
Assembly instructions | LK Room Temperature Control ICS.2
Pump relay
The Receiver 8 has a potential free pump relay for
controlling the circulation pump, for example a
pump in a shunt group. The relay is located under
the cover on the high voltage side of the receiver.
NOTE:
Cut all incoming power to the unit before
opening the high voltage cover. Remember
that the relay for pump and heat source are
powered from an external power supply
which must also be cut.
Note that the pump relay contact is potential-free
which means that the relay contact must be pow-
ered from an external source (NOTE: Not from the
receiver's power supply). The pump starts about 6
minutes after any channel calls for heat. When the
relay is enabled the Pump LED lights. The pump is
run once a day to prevent the pump from jamming
during long periods of downtime, e.g. summertime.
8
8
230VAC
FUSE
BOILER
PUMP
7
M
8
M
L N
~ ~
P
The wiring diagram for connecting the pump to receiver 8.
Relay for heat source
It is possible to control the system's heat source via the
receiver's relay for the heat source. The relay is located
under the cover on the high voltage side of the receiver.
NOTE:
Cut all incoming power to the unit before
opening the high voltage cover. Remember
that the relay for pump and heat source are
powered from an external power supply
which must also be cut.
Note that the relay contact is potential-free which
means that the relay contact must be powered from
an external source (NOTE: Not from the receiver's
power supply). The relay activates the heat source
about 6 minutes after any channel has called for heat.
When the relay is enabled the Boiler LED lights.
See the wiring diagram below.
8
8
230VAC
FUSE
BOILER
PUMP
7
M
8
M
Boiler
L N
~ ~
The wiring diagram for connecting the heat source to
receiver 8.
