3 T&P valve
4 Stop valve
5 Non-return valve
6 Circulation pump
9 Drain valve
10 Gas cock
11 Isolating valve
14 Hot water outlets
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 BTI water heater should be installed in accordance with
local standards and ventilation requirements (category
B11BS).
Further installation and connection details can be found
in the Installation & Commissioning Manual.
BTI
Installation diagram
Vented
