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4. Installation
4.1. Connections to the chimney
4.2. Hydraulic connections
Radiators
Safety
valve
Differential pressure
valve (*)
Insulation valve
Boiler
Heating
circulation
pump
Filling valve
Expansion
vessel
HYDRAULIC SCHEMA "HEATING ONLY" WITHOUT REGULATION
Insulation valve
* If all radiators are equipped with thermostatic valves, a differential pressure valve should be placed within the delivery and return
boilers.
IMPORTANT:
The start/return pipings of the installation may not in any case be from a diameter lower than 2" at least on a section of
200mm and this in order to ensure an optimal irrigation of the cast-iron elements constituting the heating body.
The boilers are designed to function in heating installations with hot water and forced circulation.
It is forbidden for the boilers to work in thermosiphon (without circulating pump).
The fitter must absolutely dimension the circulation pump to ensure a difference of temperature between the start and return
of the boiler of minimum 5°C and of maximum 35°C.
Beforeinstallingadevice,itishighlysuggestedthattheinstallerchecksthe conditionsofthechimney(boilertubecleaning
buffer,infiltratedairintake,cracks,etc.). Theboilerperformancerequiresrelativelylowfumetemperature.Particularcare
shouldbetakento theheatinsulatedand tight chimneys.Infact,anincorrecttightnessand insulationof thechimneyreduce
the fume temperature and cause the bistre event. To avoid this problem, it is possible to tube protect the ducts, i.e. heat-
insulate the draining duct. The tubing quality should be compliant with the used fuel.
Recommendationsforchimneyconnection
- keep the same section of the boiler outlet valve
- avoid sudden direction changes
- install the connecting protection sleeves with an ascending slope in the direction of the circulation (in particular, at the
nesting into the chimney)
- arrange a draining cup as near as possible to the boiler
-arrange some chimneysmadeof corrosion-proof materials
- connect the chimney from the back. The fume pipe should be properly nested (outside) and assure a perfect tightness.
