Installation, use and maintenance guide
COMPACT S22
–S26–S32 EVO5
Page
14
ENG
5 – HYDRAULIC CONNECTION
5.1 HYDRAULIC DIAGRAM
The circulating pump installed in the appliance has the following features:
ATTENTION: flexible tubing with a minimum length of 70 centimetres must be used for all connections, as this
will facilitate moving the appliance for servicing.
ATTENTION: a connection must be made between the safety valve and the outlet to prevent damaging
materials surrounding the boiler when the valve is activated.
ATTENTION: To avoid continual startups and shut offs, the size of the plant must be such as to guarantee power
absorption that is not less than the power generated by the boiler running at reduced power.
1
System circulating pump
W
System drain/refill
gate valve
2
Automatic relief valve
X
Plant return
3
Boiler water temperature sensor
K
Plant delivery
4
Reset thermostat bulb
Y
Safety valve 3 bar
5
Pressure gauge 0 - 4 bar
Z
System inlet
6
8 l closed expansion tank
4
2
3
Y
Z
5
1
6
X
PARAGRAFO 5 _1_ 32.DFT
K
Y
W
