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• Note :
It is possible to obtain temperature control by actuating a
temperature control valve (not supplied) operating in on-
off mode and feeding the terminal unit.
In this case, ventilation is permanent.
Valve power supply: 230 VAC (Max. intensity = 0.5 A in-
ductive).
• It is possible to invert the direction of action of control and
thus to change to heating mode by connecting thermostat
terminal 19 to the installation's neutral which can be found
on thermostat terminal 4.
• For installations which can operate in cooling mode or in
heating mode, it is possible to connect a contact which:
- if it is closed, connects terminal 19 to the installation's
neutral and causes the installation's thermostat to
operate in heating.
- if it is open, isolates terminal 19 and causes the control
thermostat to operate in cooling mode.
• This contact (not supplied) can come, for example, from
the hydraulic module MH.
Note : The same contact can control the mode change-
over of several room thermostats provided:
- That the length of the wire connecting to the change-
over contact does not exceed 150 m (wire of section 1.5 mm2).
- That the neutral on which the change-over contact is connected is the same as the one for the various air handlers.
- Do not run this control cable near power cables in order to avoid interference.
4.3.6 REMOTE TEMPERATURE PROBE ACCESSORY
• Enables the control thermostat to be put outside the premises to be air-conditioned.
The probe connects to the thermostat.
• Fixing:
- Make sure that the installation is switched off.
- Open the probe case cover.
- Fix the probe case in the required place, following these rules:
- Avoid draughts
- Avoid any unwanted heat source which could affect the probe (sunlight, proximity
of supplementary heaters, lights, chimneys, television sets, etc.)
- Make sure that the probe is in the normal convection currents.
• Remove the cover of the control thermostat case.
• Remove the probe inside the thermostat shown opposite
(by cutting this component's fixing lugs using pliers).
Protected supply
230 V / 1 + T / 50
N Ph
COOLING MODE
ONLY
Action on valve
19
1
4
Thermostat
20
21
22
3
6
Control cable
Valve
19
1
3
4
Thermostat
20
21
22
heating change-over
19
19
1
3
4
20
21
22
AIR CONDITIONING/HEATING MODE
H z
Power supply cable
U
N
N
Air handler
1
MW
3
4
20
21
22
HEATING MODE
Air conditioning/
contact
19
1
1
3
3
4
4
20
20
21
21
22
22
27
71
71
Probe
GB
13
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