Control Of Unit With Mrs All Or Nothing Entries - CIAT AQUACIAT ILZHE 22Z Notice D'utilisation

IMPORTANT : the phase used for the Climbox 2 supply must
be the one used on the MRS5.1 card of the unit (see electrical
diagram of unit).
For further details on the ClimBOX 2, refer to the operating bro-
chure.
"
Fan coil unit type installation
Wiring diagram
"
Heating/cooling floor type installation
For this type of installation, we recommend using the Climbox 2
programme and the cooling/heating floor kit, both of which are
available in the catalogue.
The cooling/heating floor kit includes :
– 1 ambient box with ambient temperature adjustment (+/- 3°C)
thumbwheel.
– 1 manual reset thermostat for departure of hot water at 63°C
– wiring, plastic clips and isolating material.
Location of 63°C thermostat
Location of 78°C thermostat
3 - modify the thermostats 63°C and 78°C wiring as indicated
above (see the electrical diagram of the unit).
4 - fix the thermostat capillary on the water departure copper
tube with 2 plastic clips, then cover with the insulation also held
in place with 2 plastic clips.
Wiring diagram of the ClimBOX 2 and of the PCR ambient box :
" Control of unit with the all or nothing entries
of the MRS 5.1
Wiring diagram on the MRS 5.1
The PCR kit controls the house ambient temperature and
ensures the protection of the floor slab.
• In heating mode, the setting on water return takes into account
the desired P08 ambient temperature (description of parame-
ters under para. " commissioning "), the position of the ambient
box thumbwheel and the outside temperature.
• In cooling mode, the unit starts as soon as the ambient tempe-
rature goes above P09. The unit regulates with the fixed setting
on the P36 water return. The ambient box tumbwheel and the
outside temperature have no influence on this mode.
Note : the cooling mode permits creating a temperature diffe-
rence of 3 to 5°C between the indoor and outdoor temperature.
• The frost free mode permits maintaining the indoor tempera-
ture at 8°C.
To install the manual reset thermostat on the unit, you must :
1 - dismount the unit roofing and withdraw the electrical panel
door.
2 - fix the 63°C manual reset thermostat on the electrical panel
(position 1, next to the 78°C thermostat of the electrical auxiliary
devices)
7 8 9 10 11 12
Connect contacts 7, 8, 9, 10, 11, 12 of the MRS terminal box.
Connection recommendations :
All the entries must be voltage free and of good quality.
ATTENTION : do not connect a phase or a neutral on terminals
7 to 12 of terminal box J2.
• Distance inferior to 30 meters :
17
J2