Viessmann B2HF, Installation And Service Instructions For Contractors

Page: 41 / 136

41
Fig. 29
Affix a label in the operating instructions.
Calling up the commissioning assistant at a later
point
If you need to continue commissioning later, the com-
missioning assistant can be reactivated at any time.
Tap the following buttons:
1.
2. "Service"
3. Enter password "viservice" .
4. Use to confirm.
5. "Commissioning"
Filling the heating system
Fill water
According to EN 1717 with DIN 1988-100, as a heat
transfer medium for DHW heating, the heating water
must meet fluid category ≤ 3. This requirement is met if
water of potable quality is used as heating water. For
example, if additives are used, the additive manufac-
turer must specify which category the treated heating
water comes under.
!
Please note
Unsuitable fill water increases the level of
deposits and corrosion and may lead to appli-
ance damage.
■ Flush the heating system thoroughly before
filling.
■ Only use fill water of potable water quality.
■ Special antifreeze suitable for heating systems
can be added to the fill water. The antifreeze
manufacturer must verify its suitability.
■ Fill and top-up water with a water hardness in
excess of the following values must be soft-
ened, e.g. with a small softening system for
heating water.
Total permissible hardness of the fill and top-up water
Total heating output
Specific system volume
kW < 20 l/kW
≥
20 l/kW to < 50 l/kW
≥
50 l/kW
≤
50
≤
3.0 mol/m
3
(16.8 °dH)
≤
2.0 mol/m
3
(11.2 °dH) < 0.02 mol/m
3
(0.11 °dH)
>
50 to
≤
200
≤
2.0 mol/m
3
(11.2 °dH)
≤
1.5 mol/m
3
(8.4 °dH) < 0.02 mol/m
3
(0.11 °dH)
>
200 to
≤
600
≤
1.5 mol/m 3 (8.4 °dH)
≤
0.02 mol/m 3 (0.11 °dH) < 0.02 mol/m 3 (0.11 °dH)
>
600
< 0.02 mol/m 3 (0.11 °dH) < 0.02 mol/m 3 (0.11 °dH) < 0.02 mol/m 3 (0.11 °dH)
Commissioning, inspection, maintenance
Commissioning the system with the commissioning…
(cont.)
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