Viessmann vitodens Technical Manual page 57

Pre-installation on unfinished walls Vitodens 333
With connection set (part no. 7179 420)
for on-site connection from above or
below
comprising:
H 2 ball shut-off valves (G ¾")
with air vent valve, heating water
H Gas tap R ½" with integral
thermal safety shut-off valve
H Filling tap
KW GA
HV HR
243
470
208
B
KOA
Z
C
200
Key to symbols
GA Gas connection R ½"
HR Heating return G ¾"
HV Heating flow G ¾"
KOA Condensate drain
OKFF Top edge finished floor
KW Cold water G c"
WW Hot water G c"
Z DHW circulation G1"
Boiler plinth
H height adjustable, for screed floors
10 to 18 cm
H for installation of Vitodens 333 on the
unfinished floor
H with knockout apertures for on-site
pipes
VITODENS
Note
Ensure a clearance of 700 mm in front of
Vitodens is maintained for service work.
Maintenance clearance to the l.h. or r.h.
side of Vitodens are not required.
WW
A
OKFF
A Vitodens 333 (external dimensions)
B Area for electrical supply cables.
Allow all cables to protrude approx.
2000 mm from the wall.
C Drain outlet kit (accessory)
D Connection set
A Knockout apertures
2.3 Installation on unfinished walls
KW
A
333
GA
D
WW
HV
HR
57
2