Multi Boiler Systems; Special Considerations For Multi Boiler Systems - Viessmann VITODENS Operating Instructions Manual

Multi boiler systems

Special considerations for multi boiler systems

In systems with several boilers (multi boiler systems),
each boiler is equipped with its own control unit. These
control units are regulated by a higher control unit.
Make the required settings (e.g. room temperature) at
the higher control unit.
Operating instructions of the higher control unit
Boiler number
In multi boiler systems, each boiler control unit indi-
cates the boiler number on the standard display.
Example:
Boiler number "3"
3 4 8
Fig. 8
Boiler number "3" has been blocked by the higher con-
trol unit.
0
3
Fig. 9
Operating program
" " for frost protection monitoring (standby mode):
■
By selecting operating program " ", you individually
shut down the relevant boiler.
Boiler frost protection monitoring is active.
" " for DHW heating (summer mode):
■
You cannot set operating program " ".
Room temperature/boiler water temperature
You cannot select either room temperature or boiler
water temperature.
18
°C