Viessmann Vitodens 050-W Installation And Service Instructions Manual page 12

Preparing for installation
Preparing for installation
Filling/draining
G
Dimension for siting with DHW cylinder below the
H
boiler
1. Subject to order: Fit supplied pre-plumbing jig,
mounting frame or wall mounting bracket in the rel-
evant installation location.
Installation instructions for pre-plumbing jig
or mounting frame
Note
Check the condition of the wall where the boiler is
to be installed. For the suitability of the supplied
rawl plugs for various building materials, see man-
ufacturer's instructions: Fischer expansion plugs
SX 10 x 80
For other construction materials, use fixing materi-
als with sufficient load bearing capacity.
2. Prepare the water connections to the valves/fittings
of the mounting bracket.
Thoroughly flush the heating system.
!
Please note
To prevent damage to the appliance,
connect all pipework so that it is free of load
and torque stress.
Note
If an on-site expansion vessel also has to be instal-
led: Install this expansion vessel in the cylinder
return, as the 3-way diverter valve is located in the
heating flow.
Not possible with type B0KA, BPKA
Connection on the DHW side for gas condensing combi boiler
Cold water installation
Fig. 3
Cold water connection of boiler
A
Drain outlet
B
12
(cont.)
3. Prepare the gas connection according to TRGI or
4. Prepare the electrical connections.
C
D
E
F
G
H
Safety assembly
delivery and requires installing.
Only use a non-return valve or a combined 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.
TRF [or local regulations].
■ The appliance is delivered fitted with a power
cable (approx. 2 m long).
Note
Connect the power cable to the electricity supply
using a fixed connection.
■ Power supply: 230 V, 50 Hz, fuse rating
max. 16 A
■
Accessory cables: 0.75 mm
with required number of cores for external con-
nections
Accessory cables: 1.5 mm
with required number of cores for external con-
nections
Visible discharge pipe outlet point
Safety valve
Non-return valve
Shut-off valve
Cold water
Safety assembly
is included in the standard
H
2
flexible PVC cable
2
flexible PVC cable