
23
Domestic hot water system
Pressure in the hot water system must be
within the range of 1 to 6 bar. If the pressure
exceeds 6 bar, a pressure reduction
valve must be fi tted on the supply side,
combined with a safety valve.
In areas with very hard water we
recommend to implement suitable
measures to reduce the water hardness.
Fig. 12
K
O
A
L
P
S
T
R
M
W
Mounting the boiler