Installation Examples
VITOGAS 100, GS10
9
Installation Examples
These examples depict 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.
Single-stage operation can only occur when
the boiler water temperature is above the
minimum temperature and a demand for
heat is present. When the water
temperature is above the minimum, the
boiler control will determine full input
operation or partial load operation based on
the demand for heat. Refer to boiler control
instructions.
Install LWCO where required by local codes.
IMPORTANT
Vitotronic boiler controls are factory
set for single-stage operation. The
Vitogas 100, GS10 boiler control must
be programmed on-site for two-stage
operation.
Without mixing valve
e.g. with Vitotronic 100
The installation of a flow check valve 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
1
, V
2
).
See Installation Instructions for
details.
5
1
6
7
4
6
6
v
1
.3
IMPORTANT
V
1
V
1
V
2
V
2
