STIEBEL ELTRON HPG-I 04 S Premium - INSTALLATION; Maintenance and Care; Troubleshooting; Installation Safety

Repair instructions
HPG-I 04-06-08-12-15 S-CS-DS-DCS
Premium
TQR
Page 6 from 48
D0000095883-c
Info "Replacing the valve assembly on the MFG".
D0000050953
Special requirements for the use of R454c refrigerant
3. Affected devices
Device
Mat. no.
HP ID
Variant
HPG-I 04 S Premium
202617
A
HPG-I 06 S Premium
202618
A
HPG-I 08 S Premium
202619
A
HPG-I 11 S Premium
202620
A
HPG-I 15 S Premium
202621
A
HPG-I 04 CS Premium
202627
B
HPG-I 06 CS Premium
202628
B
HPG-I 08 CS Premium
202629
B
HPG-I 11 CS Premium
202630
B
HPG-I 15 CS Premium
202631
B
HPG-I 04 DS Premium
202622
C
HPG-I 06 DS Premium
202623
C
HPG-I 08 DS Premium
202624
C
HPG-I 12 DS Premium
202625
C
HPG-I 15 DS Premium
202626
C
HPG-I 04 DCS Premium
202632
D
HPG-I 06 DCS Premium
202633
D
HPG-I 08 DCS Premium
202634
D
HPG-I 12 DCS Premium
202635
D
HPG-I 15 DCS Premium
202636
D
4. Variants
The heat pumps are divided into four variants.
Variant A
H
Heating
Variant B
HK
Heating / Cooling
Variant C
HW
Heating / hot water
Variant D
HKW
Heating / cooling / domestic hot
water
The safety valve of the heat source must be installed externally.
5. Functional description
5.1 Heating and hot water operation
As soon as the heat pump control recognises a request for heating or DHW operation, the changeover
valve (MA12) in the multifunction module (MFG) moves to the corresponding position. The following
components are controlled depending on the output: the heat source pump (MA25) starts with flow, then
the compressor (MA01) and the circulation pump (MA10) are switched on.
The thermodynamic refrigeration circuit extracts heat from the source medium through the evaporating
refrigerant. The compressor compresses the aspirated refrigerant vapour and brings the refrigerant to a
higher temperature level. When the gaseous refrigerant is liquefied, the heat energy is transferred to the