13
GENERAL INfORMAtION
1.8
Operating limits
Operating mode
temperature
Min
Max
Cooling
Indoor air (W.b.)
°C
21
35
Outdoor air (D.b.)
°C
-15
46
Heating
Indoor air (D.b.)
°C
10
27
Outdoor air (W.b.)
°C
-15
24
The values are based on the following condition:
—
pipe length: 5 m
—
difference in height: 0 m
—
air flow: maximum
1.9
Cooling circuit
The cooling circuit is of the heat pump type with a refrigerant gas
reversal cycle. The source fluid utilised is the outdoor air, while
the utility-side fluid is the air inside the rooms.
During the wintertime, the heat pump extracts the thermal
energy from the outdoor air and delivers it to the room air, the-
reby heating it. During the summertime the cycle is reversed,
and the thermal energy is extracted from the room air, which is
cooled, and is delivered to the outdoor air.
A
Outdoor unit
B
Indoor unit
1
Compressor
2
Discharge temperature sensor
3
Cycle reversal valve
4
Electric fan
5
Heat exchanger
6
External air probe
7
Defrost temperature sensor
8
Capillary tube
9
Electronic expansion valve
10
Two-way shut-off valve
11
Connection pipes
12
Three-way shut-off valve
13
Intake separator
14
Intake sensor
A
B
1
2
3
6
7
8
13
14
12
11
10
9
4
5
