Regulations; Water Quality; Product Description; Supplied Parts - Bosch Compress 7000i AW Installation Manual

Regulations

2 Regulations
This is an original manual. This manual may not be translated without the
approval of the manufacturer.
Follow the directives and regulations given below:
• Local provisions and regulations of the electricity supplier and
corresponding special rules
• National building regulations
• F-Gas regulation
• EN 50160 (voltage properties in power grids for public distribution)
• EN 12828 (heating systems in buildings - Design and installation of
water-based heating systems)
• EN 1717 (Protection of potable water against pollution in potable
water installations)
2.1

Water quality

Water quality in the heating system
Heat pumps work at lower temperatures than other heating systems,
which is why thermal degassing 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.
3

Product description

3.1

Supplied parts

Fig. 1 Supplied parts
[1] Heat pump
[2] Cover and side panels
4
1
3
If heating systems have to be regularly refilled or if hot water samples
from these systems are inconclusive, corresponding measures such as
retrofitting magnetite separators and air vents are needed before
installing the heat pump.
Measures during frequent refilling: replacing the expansion vessel, leak
test and verifying whether the size of the expansion vessel corresponds
to the system volume.
If the limits specified below are not reached, an intermediate heat
exchanger may be required to protect the heat pump.
Only use non-poisonous additives to increase the pH value and keep
the water clean.
Water quality Limit values for the heating system
Hardness
Oxygen content
Carbon dioxide, CO
2
-
Chloride ions, Cl
Sulphate, SO
4
Conductivity
pH
Table 2 Water quality in the heating system
2
[3] Adjustable feet
Compress 7000i AW – 6721830633 (2021/02)
<3 °dH
<1 mg/l
<1 mg/l
<250 mg/l
<100 mg/l
<350 μS/cm
7.5 – 9