Product description
Compress 3000 AWES – 6720892204 (2020/06)
4
2.1 Water quality
Water quality in the heating system
Heat pumps work at lower temperatures than other heating systems,
which is why thermal deaerating is less effective and the remaining
oxygen content is always higher than with electric, oil and gas heaters.
This means that the heating system will be more sensitive to rust with
aggressive water.
If heating systems have to be regularly refilled or if hot water samples
from these systems are cloudy, corresponding measures such as
retrofitting magnetic filters and air vents are needed before installing the
heat pump.
A heat exchanger may be required to protect the heat pump if the
specified limits cannot be reached.
Only use additives to increase the pH value and keep the water
clean.
Table 2 Water quality in the heating system
3 Product description
3.1 Supplied parts
Fig. 1 Supplied parts
[1] Indoor unit
[2] Documentation
[3] Drill template
[4] Cable feeds
[5] Particle filter with strainer
[6] Jumpers for 1-phase installation
[7] Mounting rail
[8] Flow temperature sensor
[9] Packaging includes terminals for the installation module
[10] DHW temperature sensor
[11] Bag with screws
[12] Outdoor sensor
Water quality Limit values for the heating system
Hardness <3 °dH
Oxygen content <1 mg/l
Carbon dioxide, CO
2
<1 mg/l
Chloride ions, Cl
-
<250 mg/l
Sulphate, SO
4
<100 mg/l
Conductivity <350 μS/cm
pH 7.5 – 9
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