Operating instructions

Temperature safety valve
The S.MAX boilers are equipped with a safety valve (Fig.10) which ensures dissipation of excessive heat without
additional device and supply of external energy in such a way that the maximum permissible boiler temperatu-
re of 95°C is not exceeded. A temperature safety valve must be connected to the inlet - outlet connections of
th b il
the boiler.
Please note
•
It is not permissible to reverse the flows, the indications for inlet and drain shown on the valve must be
followed.
•
Maximum tem
p
erature of the in
p
ut water for tem
p
erature safet
y
valve is 15 °C and minimum water
p
ressur
e
Maximum
temperature
of
the
input
water
for
temperature
safety
valve
is
15
C
and
minimum
water
pressure
is 2 bar.
•
Functionality of safety device ( caleffi 544 ) must be checked or inspected by authorized person once in a
year.
fig. 10
1. Heating water inlet
2. Heating water outlet
3. Safety device ( caleffi 544 ) - max. working pressure : 6 bar
4. Safety device probe ½”
5. Safety device probe capillary
6. Filter
7. Cooling water inlet ½”
8. Safety heat outlet ( drain) ½”
10