A.O. Smith BFC - 50 User Manual

Vented

Unvented

1   Pressure reducing valve
3   T&P valve
4   Stop valve
5   Non-return valve
6   Circulation pump
9   Drain valve
10  Gas cock
11  Isolating valve
12  Temperature gauge
13  Condense drain 
14  Hot water outlets
15  Expansion relief valve
16  Expansion vessel
17  Three way valve
18  Water tank
19  Float valve

A   Cold water 
B   Hot water 
C   Return circulation 
D   Gas supply
E   Overfl ow pipe
H   Expansion vent pipe 

A.O. Smith unvented system kits utilise combination valves.

Further installation and connection details can be found in 
the Installation & Commissioning Manual.

Installation diagrams