![Viessmann D2RA Installation Instructions For Contractors Download Page 41](http://html.mh-extra.com/html/viessmann/d2ra/d2ra_installation-instructions-for-contractors_1016875041.webp)
41
Sprache
Dansk
Cesky
Bulgarski
Deutsch
Wählen mit
ê
ê
ç
DE
BG
CZ
DK
ê
ê
(
Fig. 28
Setting the time and date
The time and date need to be reset during commis-
sioning or after a prolonged time out of use (approx. 18
days).
Extended menu:
1.
å
2.
"Settings"
3.
"Time / Date"
4. Set current time and date.
Filling and venting the process circuit
Note
The system is equipped with hydraulic system separa-
tion. The on-site secondary circuit and the process cir-
cuit must each be filled separately.
Fill water
!
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 hardness of over
3.0 mol/m
3
(16.8 °dH) must be softened, e.g.
with a small softening system for heating
water.
Commissioning, inspection, maintenance
Changing the language
(cont.)
5678 044 GB
Summary of Contents for D2RA
Page 113: ...113 Maintenance Checking the Vitotronic 200 H accessories cont 5678 044 GB Maintenance ...
Page 133: ...133 Parts lists Sorption module hydraulics cont 5678 044 GB Components ...
Page 136: ...136 0001 0002 0003 0004 0005 Fig 83 Parts lists Miscellaneous 5678 044 GB Components ...
Page 163: ...163 5678 044 GB ...