Page 29 from 40 6720803522 AD HP270-1 2012/03 en
Appliance
Pressure Relief
Valve (bar)
Water Pressure
(bar)
Recommended
Vessel Capacity (l)
HP 270
(35ºC to 60ºC)
6 bar
2
12
3
18
4
25
8 bar
2
12
3
12
4
18
10 bar
2
12
3
12
4
18
Table 4 – Recommended expansion vessel size
Pict.24 – Overview of dimensions for hydraulic connections
Apart of the available accessories supplied by Bosch, other important accessories must be considered by the
installer to complete installation, according available products in destination country.
It’s strongly recommended verify functionality and existence of:
-
Expansion vessel (available volumes of 12, 18 and 25 liters);
-
Pressure relief valve (up to 10 bar);
-
Cut-Off Valve;
Hot Water Outlet 1”
Recirculation 3/4”
External Coil 1”
Cold Water Inlet 1”
Junkers / Elm
Leblanc
Bosch / Buderus
