54
Installation and maintenance instructions 0020257297_06
3.9.2
DHW mode
[-20;43]
[35;62]
[-10;55]
[-20;5]
[2;62]
[20;5]
[43;55]
[43;10]
A
B
60
70
50
40
30
20
10
0
-20
-10
0
10
20
30
40
50
A
Outdoor temperature
B
Heating water temperat-
ure
3.9.3
Heat output
0,70
0,75
0,80
0,85
0,90
0,95
1,00
0
5
10
15
20
25
30
35
40
A
B
A
Basic length of the
refrigerant pipes in
metres
B
Power factor
3.9.4
Cooling mode
Validity:
Product with cooling mode
[15;7]
[15;25]
[46;7]
[46;25]
A
B
30
25
20
15
10
5
0
10
15
20
25
30
35
40
45
A
Outdoor temperature
B
Heating water temperat-
ure
3.9.5
Cooling output
Validity:
Product with cooling mode
0,70
0,75
0,80
0,85
0,90
0,95
1,00
0
5
10
15
20
25
30
35
40
A
B
A
Basic length of the
refrigerant pipes in
metres
B
Power factor
3.10
Thawing mode
At outdoor temperatures below 5 °C, condensation on the
fins of the evaporator may freeze and frost may form. This
frost is automatically detected and is automatically thawed at
certain intervals.
The thawing occurs by reversing the refrigeration circuit
while the heat pump is operating. The heat energy that is
required for this is taken from the heating installation.
Correct thawing operation is only possible if the minimum
volume of heating water is circulating in the heating installa-
tion:
Product
If the back-
up heater is
activated
If the back-up heater
is deactivated
VWL 35/5 to
VWL 75/5
40 litres
100 litres
VWL 105/5 and
VWL 125/5
60 litres
200 litres
3.11
Safety devices
The product is equipped with technical safety devices. See
"Safety devices" graphic (
If the refrigerant circuit pressure exceeds the maximum pres-
sure of 4.15 MPa (41.5 bar), the pressure switch switches
the product off. Following a waiting period, another attempt
is made to start it. After three failed start attempts in succes-
sion, a fault message is displayed.
If the product is switched off, the crankcase housing heat-
ing is switched on when the compressor outlet temperat-
ure reaches 7 °C. This prevents possible damage caused
by switching the product back on.
If the compressor inlet temperature and the compressor out-
let temperature are below -15 °C, the compressor does not
start up.
If the temperature measured at the compressor outlet is
higher than the permissible temperature, the compressor
is switched off. The permissible temperature depends on the
evaporation and condensation temperature.
Содержание VWL 105/5 AS S2
Страница 203: ......
