Viessmann Vitopend 100-W Installation And Service Instructions

19
B DC EA
A
Heating flow
B
Gas combi boiler:
DHW
Gas system boiler:
Cylinder flow
C
Gas connection
D
Gas combi boiler:
Cold water
Gas system boiler:
Cylinder return
E
Heating return
Cold water installation
A
Cold water connection, boiler
B
Drain outlet
C
Visible discharge pipe outlet point
(tundish)
D
Safety valve
E
Non-return valve
F
Shut-off valve
G
Cold water
H
Safety assembly
Safety assembly
H
to DIN 1988 and
EN 806 is required if the mains water
supply pressure exceeds 10 bar (1.0
MPa), and no DHW pressure reducing
valve is installed (to DIN 4753).
Only use a non-return valve or a com-
bined shut-off and non-return valve in
conjunction with a safety valve.
If the safety valve is used, the cold
water shut-off valve on the boiler must
not be shut off.
Remove the toggle on the cold water
shut-off valve (if installed) to prevent it
being shut off manually.
Shock arrestor
If the pipework to which the boiler is
connected also supplies draw-off points
at which water hammers may be cre-
ated (e.g. pressure washers, washing
machines or dishwashers), we recom-
mend installing a shock arrestor near
the source of the water hammer.
Installation sequence
Mounting the boiler and making the connections
(cont.)
5837146
Installation

Viessmann Vitopend 100-W Specifications

General

Fuel Type	Gas
Max. Water Temperature	85 °C
Type	Condensing Boiler
Gas Type	Natural gas / LPG
Efficiency	Up to 98%