Minimum Clearances - Viessmann VITODENS 200-W Technical Manual

Design information
Thermally activated safety shut-off valve
According to paragraph 4, section 5 of the FeuVo 2008 [or local reg-
ulations], thermally activated shut-off equipment that will shut off the
gas supply if the external temperature exceeds 100 ºC must be instal-
led in combustion equipment or in gas lines immediately upstream of
the combustion equipment. These valves must isolate the gas supply
for at least 30 minutes up to a temperature of 650 ºC. This is intended
to prevent the formation of explosive gas mixtures in the event of a
fire.
The gas shut-off valves supplied with the Vitodens are equipped with
integral thermally activated safety shut-off valves.
Sizing recommendation, gas flow switch
In supply areas with H below 8.6 kWh/m
IB
pliant with category I , determine a fictitious rated heat input. This
2N
fictitious rated heat input results from the rated heat input (Q
appliance, multiplied by a factor of 1.23 (ratio H
gas flow switch and size the pipework to TRGI 2008 [or local regula-
tions] using this fictitious rated heat input.

Minimum clearances

Maintain a clearance of 700 mm in front of the Vitodens or the DHW
cylinder for maintenance purposes.
Installing the Vitodens 200-W, 45 to 100 kW directly onto a wall (single boiler)
The enclosed screws and rawl plugs are only suitable for concrete. For
other construction materials, use fixing materials that are suitable for
100 kg loads.
VITODENS 200-W
(cont.)
3 and gas appliances com-
) of the
NB
8.6/7.0). Select the
IB
Rated heating output range of the
Vitodens
kW
12.0-45.0
12.0-60.0
20.0-80.0
20.0-100.0
32.0-150.0
The selection recommendation for the gas flow switch does not waive
the requirement for correctly sizing the pipework, including the gas flow
switch.
No maintenance clearances are required to the left or right of the
Vitodens.
Gas flow switch
GS 10
GS 16
GS 16
GS 16
not required
4
VIESMANN
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