Table des Matières
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Only applicable numbers are mentioned.
1.
pressure-reducing valve
(mandatory if the mains water
pressure exceeds 8 bar)
4.
stop valve (recommended in pipe
C and mandatory in pipe A)
5.
non-return valve (mandatory)
6.
circulation pump (optional)
9.
drain valve (mandatory)
11.
service stop valve
(recommended)
12.
temperature gauge
(recommended)
13.
condensation drainage
(mandatory)
42
1.5.4 Water circuit – hydraulics diagram
UNVENTED
A
VENTED
H
19
A
E
4
18
14.
hot water draw-off points
15.
expansion valve (mandatory)
16.
expasion vessel (mandatory)
17.
3-way aeration valve
(recommended)
18.
water tank
19.
float valve
14
14
14
4
4
12
6
5
4
C
4
1
5
15
17
12
T
11
14
14
14
5
6
4
4
C
4
11
T
B
13
16
9
B
13
9
A.
cold water supply
B.
hot water supply
C.
circulation pipe
E.
overflow pipe
H.
overflow safety
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