Vaillant Vantage 120 Installation Instructions Manual page 24

8 Installation procedure
VANTAGE 120, 150 and 200 installation
F
E
Fig. 12
A Primary flow from boiler
B Heating flow
C Primary return to boiler
D Main cold water inlet
E Domestic hot water outlet
F Temperature and pressure relief valve discharge
G Sacrificial anode
H Primary circuit air release valves
J Pressure limiting valve and strainer
K Combined expansion relief and check valve
L Connection point for expansion vessel
I Secondary return connection
24
A
B
C
H
D
J
K
L
I
G
Vaillant Vantage 120/150/200