Ferroli ECOTOP VMF Instrucciones De Montaje página 40

IMPORTANT - frost protection
If the solar circuit TIGHTNESS TEST is done with pure water without added antifreeze (INADVISABLE),
make sure to empty the circuit COMPLETELY at the end of the test and immediately fill it with a solution
containing ANTIFREEZE or a suitable premixed solar fluid (e.g. FERSOL LT or ULTRA LT).
The rule for calculating the frost protection level for a solar system is to consider the MINIMUM DESIGN
TEMPERATURE of the place for heating systems (e.g. Law 10/91) SUBTRACTING ANOTHER 7° for "wind-
chill" (rapid heat loss due to wind) and the "clearsky" effect (night radiance with clear sky) on the collector
installed on the roof.
NEVER use solar circuit automatic filling devices directly connected to the mains water, as these do not
allow the replenishing of any small leaks (even prolonged) with the correct added mixture of antifreeze,
diluting the level of protection and putting at risk the integrity of the collector at the connections (plastic
unions) and, in serious cases, the internal piping.
Any devices for replenishing the specific fluid solar can be used only in the presence of good quality mains
water (absence of sludge, hard or brackish water) after a chemical-physical analysis, and in any case provid-
ing for a specific antifreeze dosing pump to add a suitable mixture of quality equal to the solar mixture of
the original filling.
The manufacturer declines any liability for damage caused by frost whenever the
above COMPULSORY instructions are ignored.
Deaeration
To install an automatic deaeration system, it is necessary to remove (by unscrewing) the manual deaerator
and fit the valve and automatic deaerator (optional kit code 072153X0 for model VRF/VRFA, standard on
model VMF/VMFA) as shown in the figure.
If the solar system is deaerated with an automatic deaerator (accessory), close the ball valve after deaera-
tion.
40
EN
ECOTOP VMF/VMFA/VRF/VRFA
3
4
cod. 3541D350 - Rev. 03 - 11/2014
2
1
Legend
1 - Manual deaerator
2 - Ball valve
3 - Automatic deaerator
4 - O-ring