BTI
Installation diagram
Unvented
1Pressure reducing valve
3T&P valve
4Stop valve
5
6Circulation pump
9Drain valve
10Gas cock
11Isolating valve
14Hot water outlets
15Expansion relief valve
16Expansion vessel
ACold water
BHot water
CReturn circulation
DGas supply
A.O. Smith unvented system kits utilise combination valves.
A 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.
