4
INSTALLATION
Installation of the boiler can only be done by a company or individual with the necessary pro-
fessional accreditations. Installation should be performed so that it meets the generally accepted
laws and regulations applicable to the industry. Electrical installation work must be done only
by a qualified electrician.
Space requirements
An area of 1 metre must be reserved in front of the boiler for cleaning and maintenance pro-
cedures. Above the boiler, a space at least as high as the height of the boiler must be reserved for
convection.
Flue connection and combustion air opening
Flue requirements for Ariterm 35+:
• Steel flue: height at least 4 m from the floor of the boiler room to the top of the flue, inner
diameter at least 150 mm
• Brick flue: height at least 4 m, free cross-sectional area at least 290 cm2
• For already existing flues, check the fire-technical suitability of the flue from your local fire
safety authority.
e free surface area of the combustion air opening must be about the same size as the flue.
is opening must never be covered.
Plumbing connections
Ariterm 35+ is intended for use with an accumulator tank. Before installation of the boiler, the
heating system must be flushed and a water pressure test carried out. e tightness of the con-
nections must be ensured before installation. e factory is not responsible for damage caused
by leaking connections.
Safety vent installation
e vent must be CE-approved with a maximum opening pressure of 1.5 bar and a minimum
size of DN 15. e safety vent must be selected according to the highest pressure class of the
equipment assembly. No equipment may be installed between the vent and the boiler, as this
may interfere with the connection. e exhaust pipe must be dimensioned and installed so that
it neither restricts the exhaust efficiency of the vent, nor causes a hazardous situation when the
vent is in operation. e volume of the expansion tank must correspond to the greatest change
in fluid volume that occurs when the equipment is in use. In periodic heating, the expansion vo-
lume must be about 10% of the overall system volume. We recommend the use of only a closed
system (film expansion vessel).
