Installation and Operation Manual

Relay function
The boiler relay can be used to send a signal to either fire the heat
source, or to power open a 2-port motorised zone valve positioned on
the flow to the underfloor heating manifold. If the relay is used to
power open a zone valve then, the volt free auxiliary contacts on the
zone valve should be used to fire the heat source.
Alternatively, the boiler relay can be used to send a demand signal to
an electrically operated water temperature room controller. The
additional contacts on the water temperature controller should then
be used to fire the heat source.
The boiler is activated when the relay is closed.
Heating/cooling (requires communication
module)
WD0000005
RELAY 2 (BOILER)
Caution!
If more than one room controller is available in the
system, and the circulation pump settings in Installer
settings is set to Common. The connector on the other
room controllers can be used for heating/cooling output
signal.
Note
This connection requires a dry contact sensing input in
the component producing heating/cooling.
Note
This relay function requires a communication module,
and must be set in Installer settings during initial
configuration, or in the System settings menu.
Note
In systems with a communication module, make sure that
room controller
, relay 2 (Boiler), is set to H/C Switch in
Installer settings and that cooling is available in the
system.
1. Ensure that the power is disconnected from both the room
controller and the heating/cooling relay.
2. Remove the screw and open the cover for the optional
connections compartment.
3. Route the cable from/to the heating/cooling relay via a cable
entry.
4. Connect the heating/cooling relay to the connection labelled
Relay 2 (BOILER).
5.
Secure the cable to/from the heating/cooling relay with a cable
clamp in the enclosure.
6. Close and secure the lid to the optional connections
compartment.
Relay function
Heating is activated when the relay is open, and cooling is activated
when the relay is closed.
Dehumidifier (requires communication
module)
WD0000008
RELAY 2 (BOILER)
Note
This connection requires a dry contact sensing input in
the dehumidifier
.
Note
This relay function requires a communication module,
and must be set in Installer settings during initial
configuration, or in the System settings menu.
Note
In systems with a communication module, make sure that
room controller, relay 2 (Boiler), is set to Dehumidifier in
Installer settings.
1. Ensure that the power is disconnected from both the room
controller and the dehumidifier.
2. Remove the screw and open the cover for the optional
connections compartment.
3. Route the cable from/to the dehumidifier via a cable entry.
4. Connect the dehumidifier to the connection labelled Relay 2
(BOILER).
5. Secure the cable to/from the dehumidifier with a cable clamp in
the enclosure.
6. Close and secure the lid to the optional connections
compartment.
Relay function
The dehumidifier starts (relay closed) when the relative humidity
setpoint is reached when in cooling mode. It will stop when the
minimum run time of 30 minutes has finalized and when the relative
humidity has decreased below the defined RH setpoint - differential.
30
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Installation and operation manual