Connections On The Heating Water And Dhw Sides - Viessmann VITODENS 200-W Installation And Service Instructions Manual

Installation sequence
Mounting the boiler and making connections
3. Danger
Take care not to injure your hands.
Do not take hold of the boiler at the back of
the side panels. Hatched area in the dia-
gram.
Fitting the boiler:
Align the boiler with the outer ends of the wall
■
mounting bracket.
■ Lower the boiler vertically into position.
■ The supporting surface of the boiler must rest on
the fitting assembly.
4. Take 4 screws from the installation kit and screw
them into the fitting assembly from below.
Torque 3 Nm. Never tighten the screws with a
cordless screwdriver.
Danger
Injury can be caused if the boiler is not ade-
quately secured.
Screws must be inserted to fasten the boiler
securely.
Note
When correctly installed, the boiler will not rest on
the hooks of the wall mounting bracket (see dia-
gram).

Connections on the heating water and DHW sides

A B C D E
Fig. 6 Diagram shows connections for gas con-
densing combi boiler
Heating flow G
A ¾
DHW G (gas condensing combi boiler)
B ½
Cylinder flow G (gas condensing system boiler)
¾
Gas connection R
C
½
Cold water G (gas condensing combi boiler)
D ½
Cylinder return G (gas condensing system
¾
boiler)
Heating return G
E ¾
Filling/draining
F
14
F
(cont.)
5. Tighten the union nut on the gas pipe.
Torque 30 Nm.
If the connections have not been fitted previously,
make the connections on the heating water and DHW
sides.