10
Installation and maintenance instructions 0020213394_05
–
Max. refrigerant circuit pressure: 4.60 MPa (g) (46.00 bar
(g))
–
Waiting period: 5 minutes (after the first occurrence)
–
Waiting period: 30 minutes
(after the second and every further occurrence)
The fault counter is reset if both of the following conditions
are met:
–
Heat requirement without switching off prematurely
–
60 minutes of uninterrupted operation
3.3.7
Hot gas thermostat in the refrigerant circuit
The hot gas thermostat shuts down the heat pump if the tem-
perature in the refrigerant circuit is too high. Following a wait-
ing period, the heat pump attempts to start once more. After
three failed start attempts in succession, a fault message is
displayed.
–
Max. refrigerant circuit temperature: 135
℃
–
Waiting period: 5 minutes (after the first occurrence)
–
Waiting period: 30 minutes
(after the second and every further occurrence)
The fault counter is reset if both of the following conditions
are met:
–
Heat requirement without switching off prematurely
–
60 minutes of uninterrupted operation
3.3.8
Safety cut-out (SCO) in the heating circuit
If the temperature in the heating circuit of the internal elec-
tric back-up heater exceeds the maximum temperature, the
safety cut-out shuts down the electric back-up heater as a
securing measure. Following a waiting period, another at-
tempt is made to start the electric back-up heater. A fault
message is displayed that can only be reset by pressing the
Reset button or by switching the heat pump off and on again.
–
Max. heating circuit temperature: 85
℃
4
Product description
4.1
Product design
4.1.1
Front view, open
1
2
3
4
1
Electronics box
2
Control panel
3
Heating/cylinder char-
ging diverter valve
4
4-port valve
1
2
3
4
5
11
12
9
10
8
7
6
1
Electric back-up heater
2
Condenser
3
Heating pump
4
Electronic expansion
valve EVI (intermediate
circuit injection)
5
Heating circuit
filling/draining cock
6
Data plate
7
Carrying straps for
transport
8
Compressor
9
Electronic expansion
valve
10
Brine circuit
filling/draining cock
11
Brine circuit pump
12
Evaporator (not visible)
