Overview Of Water Circuits; Filling The Fuel Cell Module System Separation Circuit - Viessmann Vitovalor PT2 E11T Installation And Service Instructions Manual

Commissioning, inspection, maintenance

Overview of water circuits

P
C
Fig. 46
The system has three separate water circuits, each
with different requirements in terms of the quality of fill
water, plus the DHW water circuit.
A Gas condensing module and heating circuits
(page 52)
Fuel cell module system separation circuit
B
(page 50)

Filling the fuel cell module system separation circuit

!
Please note
Unsuitable fill water increases the level of
deposits and corrosion. This can cause damage
to the appliance.
■ The fill and top-up water must be softened,
e.g. with a small heating water softener.
Permissible total hardness of the fill and top-
■
up water: < 3.0 mol/m
■ Antifreeze must not be added to the fill or top-
up water.
50
D
A
B
3
(16.8 °dH)
Fuel cell module process circuit
C
DHW
D