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29/05/06 -300008885-001-A
BMR 80
4.8
Domestic hot water circulation loop
To guarantee the availability of hot water as soon as the taps are
turned on, a circulation loop between the draw-off points and the
recirculation pipes in the DHW tank can be installed. A non-return
valve must be included in this loop.
4.9
Measures to take to prevent hot water blow back
Fit a non-return valve to the domestic cold water circuit.
If using a closed calorifier, the non-return valve must be easily
accessible.
4.10
Typical systems
9.
Isolation valve
17.
Drain cock
24.
DHW tank heat exchanger primary inlet
25.
DHW tank heat exchanger primary outlet
28.
Domestic cold water inlet
29.
Pressure reducer - If the supply pressure exceeds 80% of the valve
or safety unit setting (e.g. 5.5 bars for a safety unit set at 7 bars), a
pressure reducer must be installed upstream of the DHW tank
53.
Type EA protection unit (stop valve + nonreturn valve)
54.
End of the discharge pipe free and visible 2 to 4 cm above the flow
funnel
55.
Domestic hot water diaphragm safety valve sealed and calibrated at
7 bar
56.
Bleed valve
57.
Domestic hot water outlet
5 Filling the system
A connecting part, a T-piece and an annealed copper pipe are
provided with the mounting frame.
Cut the copper pipe to the correct length using a pipe cutter
.
24
25
28
57
56
8953N029B
A
Domestic cold water inlet
B
to the safety control unit
