Viessmann VITOGAS 100 GS1 series Installation Instructions Manual page 22

Connections
Installation Examples
Installation Examples
IMPORTANT
These examples show possible piping layouts
for Viessmann product equipped with
Viessmann System Technology. For boiler and
tank combinations, please install only the
feasible combinations listed in the Price List.
These are simplified conceptual drawings only!
Piping and necessary componentry must be field
verified.
Proper installation and functionality in the field is
the responsibility of the heating contractor.
Without mixing valve
e.g. with Vitotronic 100
V
1
V
2
V
22
(continued)
1
V
2
The installation of the check valve to
restrict gravity circulation in the heating
supply pipe prevents uncontrolled heat
flow to the heating system by gravity
during priority switching of domestic hot
water heating or during summer operation.
Heating circuit
Spring-loaded flow check valve
Circulation pump
Safety header
with automatic air vent,
pressure relief valve, and
pressure gage
Expansion tank
Domestic hot water storage tank
(indirect-fired)
DHW pump module
Bypass pipe (highly recommended)
c/w two regulating valves (V
See page 28 for installation details.
, V )
1 2