ENGLISH
21
CLOSED TANK additional regulations to those specified above
(VALID ONLY FOR IDRO 50/CS)
OPEN TANK
- Be careful not to exceed 1.5 bar when
filling the system.
- All the vents of the radiators must be ope-
ned during this phase so as to prevent
air pockets from forming in the system,
which would obstruct the circulation of
water.
- Only if a thermal relief valve actuates the
coil can the fireplace be installed on a
CLOSED TANK system.
- Consider the necessity of installing another
CLOSED TANK.
- Make sure the drain is connected to the
coil and the power supply is at least 1.5 bar.
- The upstream pressure of the cooling
circuit must be at least 1.5 bar (UNI
10412/2 point 6.2).
- The connections, commissioning and
verification of proper operation of the fi-
replace must be carried out by
qualified personnel, who can implement
all connections in accordance with the
laws in force, particularly with Italian D.M
37 Law No. 46/90, apart from com-
plying with these instructions.
- The thermo fireplace and the system are
filled with water that flows from the water
inlet pipe (the diameter must not be less
than 18 mm) to the open expansion tank.
- All the vents of the radiators must be ope-
ned during this phase so as to prevent air
pockets from forming in the system, which
would obstruct the circulation of water.
NB:
- The open tank should be placed higher
than 3 m from the highest radiator and
lower than 15 m from the thermo
fireplace outlet.
- Connect the drains of the thermal relief
valve (TRV) and the safety valve (SV)
(diagrams are found on the following
pages).
- The flow test of the system must be carried
out with the expansion tank open.
- It is recommended to install a 6 bar safety
valve on the hot sanitary water circuit so
as to drain any excessive increase in the
volume of the water in the heat
exchanger.
- Place all the components of the system
(circulator, heat exchanger, valves, etc.)
in easily accessible points for routine and
special maintenance procedures.
- It is recommended to prepare thermal
insulation on the vaulted top part of the
boiler.
WATER TREATMENT
- If need be, antifreeze, descaling and
anticorrosive solutions are to be added to
the water. A softener must be used if the
hardness of the water used to refill and
top-up the system exceeds 35°f (French
degrees).
Please refer to UNI 8065-1989 standard
(water treatment in domestic heating
systems).
- In any case, the tank must be high
enough to create a greater pressure than
that produced by the pump (circulator).
- The system must never be filled
directly from the water mains as the
pressure may be greater than that
stipulated on the data plate of the thermo
fireplace.
- The safety pipe to the expansion tank must
allow the water to flow freely, must not
have taps and must be insulated properly.
- The water inlet pipe must not have taps
nor curves.
- The maximum operating pressure must not
exceed 1.5 bar
- The testing pressure is 3 bar.
- In places that reach very low temperatures,
antifreeze liquid must be added to the
water in the system.
- Never ignite the fire in the thermo fireplace
(not even as a test) unless the system is
filled with water as this could cause
irreparable damage.
GENERAL SAFETY REGULATIONS
