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Installation
RT20 RF Room Thermostat – 6721844608 (2022/03)
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3.2
Electrical connection
The electrical connection must meet the current standards for
electrical installations in the country of use.
The appliance must be installed by a professional.
DANGER
Risk of electric shock!
▶ Isolate the appliance from the power supply before carrying
out any work on electrical parts.
Receiver wiring connection
▶ Prepare the connection wire and insert the wire connector.
▶ Unscrew the two back cover fixing screws at the bottom of
the receiver and detach the back cover.
▶ Remove and discard the hole cover at the bottom of the
receiver.
▶ Connect the blue and brown wires to the power terminal
and connect the black wire to the control terminal.
▶ Reattach the back cover.
▶ Insert the two screws back at the bottom of the appliance
and tighten them.
Fig. 4
Receiver wiring connection
Connecting the receiver to the wall-hung boiler
The receiver is connected to the wall-hung boiler by a T.A wire:
▶ After disconnecting the boiler power supply, find the
terminal to be connected to the receiver.
▶ Remove the terminal short wiring.
▶ Connect to the receiver T.A wire
Fig. 5
Wiring diagram
Refer to wall-hung boiler manual for more terminal information.
3.3
Mounting
The thermostat and the receiver have more than one mounting
mode option.
Thermostat mounting
▶ Press the cover-opening button of the thermostat and
insert the AAA batteries.
- Wall mounting
The thermostat can be directly mounted on the wall with screws
or double-sided glues stickers.
For wall mounting with screws:
▶ Remove the thermostat back cover and mark the cover
holes measures on the wall. The distance between the two
holes is 60mm.
▶ Drill the two holes on the wall, with 6mm diameter.
▶ Fix the back cover to the wall with two screws.
▶ Reattach the thermostat front cover to the back cover
mounted on the wall.
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