33
2.9 Hydraulic Installation
2.9.1 Open vase plant safety devices
According to standard UNI 10412-2 (2006) in force in Italy, systems with open expansion vases must
be tted with:
• Open expansion vase
• Safety pipe
• Loading pipe
• Circulator control thermostat (except for natural circulation systems)
• Circulation system (except for natural circulation systems)
• Acoustic alarm activation device
• Acoustic alarm
• Temperature indicator
• Pressure indicator
• Automatic thermal blocking switch (blocking thermostat)
2.9.2 Closed vase plant safety devices
According to standard UNI 10412-2 (2006) in force in Italy, systems with close expansion vases must
be tted with:
• Safety valve
• Circulator control thermostat
• Acoustic alarm activation thermostat
• Acoustic alarm
• Temperature indicator
• Pressure indicator
• Automatic thermal regulation switch
• Automatic thermal blocking switch (blocking thermostat)
• Circulation system
• Expansion system
• Safety dissipation system built into the generator with thermal discharge valve (automatic),
if the device is not tted with a self-adjusting temperature system.
Automatic loading domestic heating devices must be tted with a fuel blocking thermostat or with a
cooling circuit provided by the device’s manufacturer, activated by a thermal safety valve that guarantees
that the top temperature established by the standard is not exceeded. The connection between the feed
unit and the valve must be without any cut-offs. The pressure upstream of the cooling circuit must be
at least 1.5 bar.
2.9.3 Recommendations for installation
The hydraulic plant can be connected after positioning the thermostove and installing all the smoke
discharge pipes.
To Next Page
Loading...