Viessmann vitodens Technical Manual page 56

2.3 Installation on unfinished walls
333
Pre-installation on unfinished walls Vitodens 333
Without connection set or with connection set for on-site connection (part no. 7179 420)
2
A
Key to symbols
GA Gas connection G ¾"
HR Heating return G ¾"
HV Heating flow G ¾"
KOA Condensate drain (funnel siphon)
KW Cold water G c"
OKFF Top edge finished floor
WW Hot water G c"
Z 1 DHW circulation G 1" (without DHW
circulation pump connection set)
Z 2 DHW circulation G ¾" (with DHW
circulation pump connection set)
56
B
A Vitodens 333 (external dimensions)
B Area for electrical supply cables.
Allow all cables to protrude approx.
2 000 mm from the wall.
VITODENS