Pre-Installation With Mounting Frame - Viessmann VITODENS 300-W Technical Manual

Design information
(cont.)
A
SRL/KW
SVL/WW
Illustration: Connection layout for the Vitodens 200-W gas system boiler
A Vitodens
B Pre-plumbing jig
C Area for power cables.
Allow cables to protrude approx. 800 mm from the wall.
D Cold water and DHW connections in conjunction with DHW
cylinder installed below the boiler.
E Compulsory in conjunction with DHW cylinders below the
boiler. Otherwise recommendation only.
ATR Drain outlet connection R 1

Pre-installation with mounting frame

Mounting frame with expansion vessel for Vitodens 300-W (26
and 35 kW)
With diaphragm expansion vessel (rated capacity 18 litres), valves,
fixing elements and gas angle valve G ¾ with thermally activated
safety shut-off valve.
With valves with threaded fitting
■ For installation on finished walls
■ For installation on unfinished walls
VITODENS
B C
ATR
1 2
5
E
HR
GA
HV
O K
F F
E
GA
HR
HV
KW
OKFF Top edge, finished floor
WW
SRL
SVL
All fittings are located inside the boiler casing.
Note
Minimum clearance between mounting frame and ceiling for removal
of the expansion vessel: 400 mm.
Drain
Gas connection R ½
Heating return G ¾
Heating flow G ¾
Cold water G ½ (gas combi boiler)
DHW G ½ (gas combi boiler)
Cylinder return G ¾ (gas boiler)
Cylinder flow G ¾ (gas boiler)
6
VIESMANN
57