Bosch DOMESTIC HOT WATER HEAT PUMP Technical Manual page 46

For the maintenance, diagnostic and performance analysis of the heat pump module and its refrigerant circuit,
following information must be taken in consideration. On chapter 7, additional information is described to help the
understanding of the operation of the circuit.
Parameter
Type of refrigerant
Gas charge
Suction pressure /
Temperature
Discharge pressure /
Temperature
Internal pressure /
Temperature
Refrigerant pressure drop
on evaporator
Super heat
Sub cooling
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Pict.56 – Example of cleaning and purifier spray for evaporators application
(+5ºC to +35ºC) and
(-10ºC to +35ºC)
Table 7 - Design data of the heat pump for inlet water and inlet air at 15ºC
6720649497 SM HP270-1 2012/09 en
Value for
GWP = 1300 / ODP = 0,00
R134a
Ebullition temperature = - 26,1 ºC
375 g
outlet of evaporator / inlet to
3,5 bar / 10ºC
compressor
outlet of compressor / inlet to
8 bar / 50ºC
condenser
Inlet of evaporator / outlet of
3,5 bar / 4ºC
expansion valve
0,3 bar
3,8 K
2 K
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