Outdoor Sensor - Fujitsu WSYA050ML3 Design & Technical Manual

¢ Outdoor sensor
The outdoor sensor is required for the heat pump to operate correctly.
Consult the fitting instructions on the sensor's packaging. Place the sensor on the coldest part, gen-
erally the northern or north-eastern side.
In any case, it must not be exposed to morning sun. It must be installed so as to be easily accessible
but at least 2.5 m from the floor. It is essential that it avoid any sources of heat such as flues, the
upper parts of doors and windows, proximity to extraction vents, the underneath of balconies and un-
der eave areas which would isolate the sensor from variations in the outdoor air temperature.
Connect the outdoor sensor to the M and BX4 (B9) terminals on the heat pump control board.
¢ Room thermostat and/or remote control
The room thermostat (remote control) is optional.
Consult the fitting instructions on the sensor's packaging. The sensor must be installed in the living
room area on a very uncluttered wall, 1.5 m above the floor.
Avoid direct sources of heat (chimney/flue, television, cooling hobs), draughty areas (ventilation,
door, etc.). Air leaks in the seals in the constructions are often translated into cold air blowing
through the electrical conduits. Lag the electrical conduits if there is a cold draught on the back of
the IR sensor.
• Installing a room thermostat
– Room thermostat
Connect the room thermostat to the X86 connector of the heat pump's regulator board using the
connector provided (terminal 1, 2).
– Room thermostat radio
Connect the wireless room thermostat radio to the connector X60.
• Installing a remote control
– Remote control unit
Connect the remote control unit to X86 connector of the heat pump's regulator board using the
connector provided (terminal 1, 2, and 3).
– Remote control unit radio
Connect the wireless remote control unit radio to the connector X60.
4-3. Connections to the heat pump regulator (Accessories and Options)
- (03-74) -
4. Electrical connections