52
Hy
dr
aulic c
onnec
tions
ARIANE
X
T
PL
US
NOTE: Installation with under-fl oor systems
For under-fl oor installations, make sure to install a safety device on the heating delivery circuit, as required by DTU 65.11. For the thermostat
hookup, refer to “Electrical connections”.
If the delivery temperature is too high, the system stops in both domestic hot water and heating/cooling modes, and the remote control will
report error code 116 “Under-fl oor heating thermostat open”. The system will start again when the manual re-arm thermostat is closed.
CONNECTIONS BETWEEN INTERNAL UNIT AND EXTERNAL UNIT
ATTENTION
The electrical connections are made after completing all hydraulic connections.
1 ZONE MGP
The internal unit has a circulation pump which drives the fl uid between the external unit and the heating/cooling system.
The unit also has two 2 kW heating elements and an expansion vessel.
VE
1
6
4
(*)
5
7
2
8
3
Legend:
1. Internal unit
2. External unit
3. External sensor
4. High-temperature heating zone /
Low temperature cooling zone (with fan
coil unit)
5. Heating/low temperature cooling zone
6. Expert Control system interface
7. Filter
8. Cartridge Anti-freeze
(*) Auxiliary pump (not supplied)