4
The boiler is factory fitted with a safety valve mounted
on the left hydrobloc.
CAUTION
4
The heating pipe must be mounted in accordance
with prevailing provisions.
4.6.3.
Hydraulic connection of the water circuit
for domestic use
1. Connect the cold water inlet pipe to the domestic cold water
connection.
2. Connect the domestic hot water outlet pipe to the domestic hot
water connection.
x
Connection by internal brazing ∅ 16 mm
y
Connection by internal brazing ∅ 16 mm
CAUTION
4
The domestic water pipes must be connected in
accordance with prevailing provisions.
4
If using synthetic pipes, follow the manufacturer's
(connection) instructions.
4.6.4.
Connecting the expansion vessel
The boiler is fitted as standard with an 12-litre expansion vessel.
If the water volume is greater than 150 litres or the static height of the
system exceeds 5 metres, an additional expansion vessel must be
fitted. Refer to the table below to determine the opened expansion
vessel required for the installation.
Conditions of validity of the table:
4
3-bar safety valve
4
Average water temperature: 70 °C
Flow temperature: 80 °C
Return temperature: 60 °C
4
The filling pressure in the system is lower than or equal to the initial
pressure in the opened expansion vessel
T001633-B
T001626-A
MCA 15 - MCA 25 MCA 25/28 MI
4. Installation
29/04/2010 - 300022146-001-B
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