Measuring Static Pressure; Filling Gas Condensing Module And Heating Circuits - Viessmann Vitovalor PT2 Installation And Service Instructions For Contractors

Commissioning, inspection, maintenance

Measuring static pressure

D
B
Fig. 59
1. Fold down heat management unit
page 42.
2. Remove cover panel
3. Close gas shut-off valve
4. Loosen the screw in test connector
train, do not unscrew. Connect the pressure gauge.
5. Open gas shut-off valve

Filling gas condensing module and heating circuits

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.
62
A
. See
A
.
B
.
C
on the gas
D
.
C
C
6. Measure static pressure and record measured
value in report on page 162.
Set value: Max. 30 mbar (3.0 kPa).
7. Close the gas shut-off valve. Remove the pressure
gauge and lock the screw in the test connector
8. Fit cover panel
B
9. Open gas shut-off valve
.
.
C
.
D