Viessmann VITODENS 300-W Technical Manual page 9

Vitodens 200-W
(cont.)
a
KAS
360
A Compulsory in conjunction with DHW cylinders below the
boiler. Otherwise recommendation only.
B Installation on finished walls
C Installation on unfinished walls
ATR Drain outlet connection
E Drain
GA Gas connection
HR Heating return
A B
105
225
Balanced flue connection
A Balanced flue connection
B Ventilation air connection (closed in delivered condition)
Rated heating output
kW
3.2 - 13.0
3.2 - 19.0
5.2 - 26.0
5.2 - 35.0
VITODENS
225
B
SVL/
WW
SRL/
KW
SIV
HV GA HR
E
95
162
225
287
355
450
OKFF
HV Heating flow
KAS Boiler flue connection
KW Cold water (gas condensing combi boiler)
OKFF Top edge finished floor
SIV Safety valve
SRL Cylinder return (gas condensing boiler)
SVL Cylinder flow (gas condensing boiler)
WW DHW (gas condensing combi boiler)
Note
For connection dimensions for installation on finished walls with pre-
plumbing jig, see page 54.
For connection dimensions for installation on unfinished walls with pre-
plumbing jig, see page 56.
Note
Lay all required supply cables on site and route them into the boiler at
the point indicated (see page 52).
HV SVL/
Dim. a
mm
136
136
158
158
225
C
SVL/
WW
SRL/
KW
SIV
ATR
HV GA HR
E
95
162
225
287
355
450
OKFF
Finished wall
GA SRL/ HR
WW KW
VIESMANN
1
50
9