CAROBNA HYDRO
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Figure 7 b
– Scheme of closed central heating system with built leaning pipe thermostat
Pump 1. Intake valve
Valve 2. Guide for filling and discharging the system
Air-exhaust valve 3. Distribution guide
Safety valve 4. Thermal exhaust valve
Mixing valve 5. Drainage for overheated water from the system
Thermomanometer 6. Aqueduct network
Consumer 7. Closed expansion vessel
Boiler filling tap 8. Leaning pipe thermostat
Instalation on the open central system
One of the aspects of installation is depicted on Figure 8a and 8b.
At this system, starting guides are to be mounted in sequence, safety distribution guide of expansion vessel
and boiler valve, and on starting guide of the system boiler valve, pump and valve are to be installed. Directly
below opened expansion vessel, short connection should be installed between safety distribution guide and
safety retracting guide, which provides freezing of water during winter in the expansion vessel.
On safety distribution and safety retracted guide, there may not be any armature. Expansion vessel itself
must possess overflow pipe as seen on scheme on figure 6. Volume of expansion vessel is determined by the
pattern:
V = 0,07x V water, (l), where V water is volume of water in entire power plant.
Open expansion vessel is to be installed vertically above the highest heating body. At the opened system of
heating, gravitation system of heating is possible.
Thermal safety valve, Caleffi 544, in installation for open central heating system is not necessary.
