8
The device is of one piece with the thermal valve and valve for filling.
Valve opening temperature is 100°C (+0°C/-5°C).
The fluid recommended in the installation is water and glucose antifreeze of 30%.
Note:
At reaction, and valve operation, during fluid cooling in an overheated boiler part of the new fluid is injected into the boiler,
but the part is also ejected from the boiler. It will be poured down the drain. If the antifreeze is in the installation you must
keep in mind that a certain percentage will go out and pour down the drain!
We recommend the thermal valve Caleffi type 544, 1/2" as shown in Figure 7a.
7.2.2.
SLOPE PRESSURE REGULATOR 1/2" WITH MANOMETER (Fig. 7, Item 19 and Fig. 7b)
When installing the thermal valve it is required to mount the slope pressure regulator as shown in Fig. 7, Item 19. The
pressure that is maintained by pressure regulator must be set at a higher pressure than the pressure that is in the heating
system. If you do not have a higher water pressure of at least 0.8 bar compared to the pressure in the heating system thermal
valve will not work or cannot inject cold water into the boiler that needs to be cooled.
Pressure regulator should be set to 2.8 to 3 bars.
You should take into account the direction of placing the slope pressure regulator!
7.2.3.
WATER FILTER OF THE BOILER INTAKE (Fig. 7, Item 20)
In front of the slope pressure regulator on water intake from water supply line it is necessary to install a filter that will clean
the water from solid objects, primarily of sand, which can damage the tap seal or seals of the thermal valve and the slope
pressure regulator.
This filter does not need to be resistant to high water temperatures due to cold water that flows through.
7.2.4.
WATER FILTER OF THE BOILER OUTLET (Fig. 7, Item 21)
It is required to install the filter on the boiler outlet which will clean the hot - boiling water from dirt and solid objects that
can damage the tap seals, or seals of the thermal valve.
This filter must be resistant to water temperatures up to 150°C.
NOTES:
- After the completion of thermal valve activation, checking the pressure in the installation and filling the system with cold
water is mandatory.
- In cases where antifreeze is used, after filling the installation with water it is required to check percentage content of
antifreeze in a mixture of water and antifreeze!
7.3.
SAFETY VALVE (Fig. 7 and 8, Item 5 and Fig. 4, Item 6)
An R1/2" connection (Fig. 4, Item 6) is welded at the back of the boiler, under the cooktop frame, on which a safety valve
MUST be fitted. The safety valve should be 2.5 to 3 bars. You can fit it directly on the connection or at a distance from the
connection of at least 1 m, provided that there is no block valve between the boiler and the safety valve.
In general, safety valve is not fitted in open circuits, but we advise you to fit it nonetheless, as another safety precaution for
the boiler and the system (in case of emergency).
NOTE:
If the safety valve is not fitted as described above, the warranty will not be valid.
7.4.
THERMOMETER AND PRESSURE GAUGE (Fig. 1, Items 16 and 17 and Fig. 5)
Thermometer and pressure gauge are installed on the stove, on the additional lid (Fig. 1, Item 24) between the firebox door
and the ash pan door (Fig. 1, Items 16 and 17, and Fig. 5) and therefore it is not necessary to install them.
Thermometer, Item 17, shows the temperature of water in the boiler (operating temperature) in ºC.
Pressure gauge, Item 16, shows the pressure of water in the boiler or the system in bars.
Figure
5
Figure 6
8.
PRACTICAL
INSTRUCTIONS
AND
HEATING
SYSTEM
OPERATION ADVICE
-
We recommend you to use a closed circuit, due to corrosion hazard related to open circuits.
-
All connections must be well sealed and tightened.
-
Before startup, the entire system needs to be tested with water under 2.4 bar pressure.
-
It is recommended to discharge the water from the system at least once, to empty the system of dirt.
