- 15 -
the power supply for the device, but this voltage does not appear on the
connection points of the relay that controls the boiler (
NO
and
COM
). We
propose to connect the neutral wire of the network to point
N
, while the phase
conductor to point
L
. We recommend using a fork type connection including
a switch for mains connection. Please de-energize the device when heating
is continuously not needed (e.g. summer).
The receiver unit controls the boiler or air conditioner through a potential-free
relay whose connection points are:
NO
and
COM
. Connect the two connection
points of the heating or cooling equipment to be controlled to terminals
NO
and
COM
, i.e. to the normally open terminals of the relay. These connection points
become closed following the heating/cooling command of any thermostat.
If you would like to operate an old boiler or any other device that has no
connection points for thermostats, then the connection points
NO
and
COM
of the thermostat should be connected to the mains cable of the device,
similarly as a switch would be connected
.
ATTENTION!
Always consider the loadability of the receiver unit and follow the
manufacturer’s instructions of the heating or cooling equipment. The device must
be installed and connected by a qualified professional!
The voltage appearing at terminals
NO
and
COM
depends only on the
system being controlled, therefore the dimensions of the wire are determined
by the type of the device to be controlled. The length of the wire is of no
significance, the receiver unit may be installed either near the boiler or far
away from it, but do not install it under the housing of the boiler.
If the distance between the transmitter and receiver units is too large due to
local circumstances and it makes the wireless (radio-frequency) connection
unreliable, install the receiver unit nearer to the place of thermostat.
Beside controlling the boiler, the receiver unit can also open/close the valves
of maximum 4 heating zones. Following the heating/cooling command of
one of the thermostat, 230V AC, 50Hz voltage appears on the connection
points of the zone valves associated with the thermostat. The zone valves
should be connected to the connection points
L1 N1
;
L2 N2
;
L3 N3
and
L4
N4
of the receiver.
230V AC
50-60 Hz
230V AC
50-60 Hz
N
L
Heating unit (boiler)
Zone valves
Rear panel of the receiver unit
(phase)