Nibe AXC 30, Руководство по установке

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Active cooling in
4-pipe system
GENERAL
This function makes it possible to control the production
of cooling.
The cooling system is supplied with cooling from the
heat pump using a circulation pump (AA25-GP12) via a
reversing valve (QN12).
For the installation to work, the cooling system must
flow freely at all times, for example using a volume
vessel (UKV) for cooling.
Operating mode cooling is activated by the temperature
on the outdoor temperature sensor (AA25-BT1) and any
room sensor (AA25-BT50) , room unit or separate room
sensor for cooling (AA25-BT74) (if two different rooms
are to be cooled or heated at the same time, for ex-
ample).
When cooling is required, the cooling reversing valve
(EQ1-QN12) and the circulation pump (EQ1-GP10) are
activated.
Cooling production is regulated by the cooling sensor
(EQ1-BT64) and a cooling set point value that is determ-
ined by the selected cooling curve.
As an accessory, a cooling reversing valve is required,
e.g. VCC 22/VCC 28.
PIPE CONNECTIONS
GENERAL
Pipes and other cold surfaces must be insulated with
diffusion-proof material to prevent condensation. Where
the cooling demand is high, fan convectors with drip
trays and drain connection are needed.
REVERSING VALVE, COOLING/HEATING
The reversing valve (EQ1-QN12) is located in the system
on the supply line from the heat pump.
AB
B A
• Connect the supply line to the climate systems from
the heat pump to the common port AB on the revers-
ing valve (always open).
• Connect the supply line to the climate system for
cooling to port A on the reversing valve.
• Connect the supply line to the climate system for
heating to port B on the reversing valve.
TEMPERATURE SENSOR
Temperature sensor (EQ1-BT64) is mounted on the
supply line to the cooling system at the T-pipe connec-
tion to the volume vessel (CP10.2).
LEK
LEK
E
Install the temperature sensors using cable ties, together
with the heat conducting paste and aluminium tape.
Then insulate with the enclosed insulation tape.
NOTE
To prevent interference, sensor cables to ex-
ternal connections must not be laid close to
high voltage cables.
AXC 30 F-series | GB 68
F