Viessmann vitodens Technical Manual page 51

Pre-installation in unfinished buildings for subsequent installation of Vitodens 200 and 300 (up to 35 kW)
directly on the wall installation on finished walls
Required accessories for installations
without DHW cylinder
Installation template
incl. fixing parts, valves and gas stop cock
Rp ½" with integral thermal safety
shut-off valve
D
Illustration: Gas fired combination boiler connection
Key to symbols
E Drain
GA Gas connection Rp ½"
HR Heating return Rp ¾"
HV Heating flow Rp ¾"
OKFF Top edge finished floor
VITODENS
2.3 Installation in unfinished buildings (on finished walls)
Additional requirements when
connecting a DHW cylinder
Connection set for DHW cylinders
A B C
E
HR
SRL/KW
GA
SVL/WW
HV
Only for gas fired combination boilers
KW Cold water G ½"
WW Hot water G ½"
Only for gas fired boilers
SRL Cylinder return G ¾"
SVL Cylinder flow G ¾"
*1
Obligatory in conjunction with DHW
cylinders installed below the boiler.
Otherwise, recommendation only.
Note
Ensure a clearance of 700 mm in front of
Vitodens or the DHW cylinder for
maintenance purposes.
Maintenance spaces to the l.h. or r.h. side
of Vitodens are not required.
A Installation template
B Vitodens
C Area for electrical supply cables.
Allow all cables to protrude
approx. 1 200 mm from the wall.
D Wall mounted DHW cylinder
(if installed)
200
300
2
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