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Air to Water Heat Pump split system
5.6
Outdoor sensor
The outdoor sensor is required for the heat pump to
operate correctly.
Consult the fitting instructions on the packaging.
Place the sensor on the coldest part, generally the
northern or north-eastern side.
In any case, it must not be exposed to the 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
under-eave areas, which would isolate the sensor from
variations in the outdoor air temperature.
- Connect the outdoor sensor to the connector X84
(terminals M and B9) on the heat pump control board.
5.7
Room thermostat
and/or room control unit
The room thermostat (room control unit) is optional.
Consult the fitting instructions on the packaging.
The sensor must be installed in the living room area on
a very uncluttered wall. It must be installed so as to be
easily accessible.
Avoid direct sources of heat (chimney/flue, television,
cooking 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.
5.7.1 Installing a room sensor
• Room thermostat T55
- Connect the room thermostat to the X86 connector of
the heat pump's regulator board using the connector
provided (terminals 1, 2).
• Wireless room thermostat T78
- Please refer to the instructions .
5.7.2 Installing a room control unit
• Remote control unit T75
- Connect the remote control to the X86 connector of
the heat pump's regulator board using the connector
provided (terminals 1, 2 and 3).
• Wireless remote control T78
- Please refer to the instructions .
5.7.3 Fan convectors or dynamic radiators area
If the installation is equipped with fan convector or
dynamic radiators, Do not use a room sensor in the
area
- 38 -
6 Commissioning
- Close the installation's main circuit breaker.
On first commissioning (or in winter), in order to
allow the compressor to pre-heat, engage the
installation's main circuit breaker (power supply
to the outdoor unit) some hours before starting
up the tests.
- Engage the start/stop switch.
To ensure that inputs EX1, EX2 and EX3 operate
correctly: Check that the live-neutral polarity of
the electrical supply is correct.
When the power is switched on and every time that the
ON/OFF button is switched off and then switched on
again, the outdoor unit will take approximately 4 minutes
to start up, even if the setting is requesting heating.
The display can show error 370 when the
appliance (re)starts. Do not be concerned,
the communication between the outdoor and
hydraulic unit will re-establish itself in a few
moments.
During the regulator initialisation phase, the display
shows all the symbols and then "Data, update" and then
"State heat pump".
- Make all the specific adjustments to the setting.
(Installation configuration):
OK
- Press
- Hold down the key
access used with the aid of the knob
- Confirm with the key
- Parameter the heat pump's setting
(Consult the settings' list
On commissioning (or the case of error 10), the electrical
back-up heaters are liable to start up even if the outdoor
temperature at the time is above the heaters' trigger
temperature.
The regulating system uses an average initial outdoor
temperature of 0°C and requires some time to update
this temperature.
To avoid this situation, the sensor must be connected
correctly. Re-initialise parameter 8703 (commissioning
level, consumer diagnostic menu).
Installation and operating manual "1775 - EN"
for 3s and select the level of
OK
page
45).
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