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Installation, use and maintenance guide
BOSKY 30/F30 EVO
– BOSKY COUNTRY 30/F30 EVO
ATTENTION: it is mandatory to earth the generator. If this instruction is not observed serious damage, which is
not covered by warranty, will result to the body of the appliance. Have a skilled electrician check the earthing.
Th
ere must be no electric potential (Volt) between the generator earth and the plant’s real earth (earth plate). To
prevent electrochemical corrosion of the appliance body do not use galvanised pipes and fittings. Other materials
must be earthed with special earthing cables in order to obtain a unipotential earthing system.
5.3INSTRUCTIONS FOR EXECUTING THE HYDRAULIC SYSTEM CLOSED EXPANSION TANK
To install the system with a closed expansion tank refer to the requirements laid down in EN 10412-2:2009 for appliances with
nominal heat output not exceeding 35 kW. A closed expansion tank must be series-connected to the generator as protection for the
system.
The nominal volume of the closed expansion tank must be sized in relation to the total volume of the water contained in the system.
Thermorossi prescribes the size of the closed expansion tank as equal to 10% of the volume of water contained in the entire
system. Any bulging of the boiler body caused by an incorrectly sized expansion tank will not be covered by the warranty.
The following chapter does not replace the above standards to which it makes reference. The qualified installer must in any case be
fully aware of the above standards and their amending versions.
5.4 SCHEMATIC DIAGRAM OF TYPICAL OPEN EXPANSION TANK
HYDRAULIC SYSTEM
LEGENDA
KEY
Dall'acquedotto
from water mains
Tubo di carico
Delivery pipe
Tubo di sicurezza
Safety tube
Scarico
Outlet
ATTENTION: it is mandatory to earth the generator. If this instruction is not observed serious damage, which
is not covered by warranty, will result to the body of the appliance. Have a skilled electrician check the
earthing. There must be no electric potential (Volt) between the generator earth and the system’s real earth
(earth plate). To prevent electrochemical corrosion of the appliance body do not use galvanised pipes and
fittings. Other materials must be earthed with special earthing cables in order to obtain a unipotential
earthing system.
ATTENTION:
It is important to guarantee that the boiler return temperature always exceeds 55°C. For this reason we recommend
installing a temperature control thermometer on the return (see diagram). Act on the head of the mixing valve to adjust the
temperature.
VSP
Gate valve
(throttle according to pressure drop in the
system)
A
Heating plant delivery
R
Heating plant return
E
Safety pipe that runs from the boiler to the
open expansion tank
S
Boiler discharge
PC
System circulating pump
VI
On-off valve
VNR
Nonreturn valve
VST
Thermal relief valve (recommended)
SCS
Safety heat exchanger (recommended)
VS
Safety valve 3 bar
TCI
Circulation tube
TSF
Vent pipe
TT
Overflow pipe
VM3VT
Anti-condensation mixing valve
T
Return temperature control thermometer
Summary of Contents for Bosky 30 EVO
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