8
4.7 TYPICAL INSTALLATION LAYOUT
4.8 WATER CONNECTIONS - GENERAL
CAUTION All connections to the boiler must be carried out respecting the correct flow, return, hot, cold and
discharge indicators that are labelled on the boiler and also shown in this manual.
CAUTION When tightening or loosening threaded connections, always use suitable tools such as open-end spanners.
Do not use pipe wrenches, extensions or unsuitable tools that may cause damage or water leaks.
4
3
2
1
0
1
2
3
4
5
Heating return
Heating Flow
7
6
Balanced cold
water from Group
combination valve
to relevant outlets
Blended hot
water supplies
to all outlets
10
8
9
Mains cold
water pipe
Balanced cold
water from Group
combination valve
to thermostatic
mixing valve
1. DHW P&T Relief Valve (to drain via tundish)
2. Filling Loop
3. Sealed heating system P&T relief valve (to drain)
4. Full bore isolation valve with drain off above
5. Bypass Circuit incorporating 22mm auto bypass valve
6. Thermostatic mixing valve
7. NRV
8. Group combination valve with drain off above
9. ERV from Group combination valve (to drain)
10. Full bore isolation valve