Place Of Installation; Plumbing Connections - Ferroli BlueHelix HiTech RRT C Instructions For Use, Installation & Maintenance

2.2 Place of installation

B
The combustion circuit is sealed with respect to the place of installation and
therefore the unit can be installed in any room except in a garage. The place
of installation must be sufficiently ventilated to prevent the creation of dan-
gerous conditions in case of even small gas leaks. Otherwise there may be
risk of suffocation and intoxication or explosion and fire. This safety stan-
dard is set by the EEC Directive no. 2009/142 for all units that use gas (inclu-
ding sealed chamber units).
The unit is designed to operate in a partially protected
place, with minimum temperature of -5°C. If provided
with the special frost protection kit it can be used with
minimum temperature to -15°C. The boiler must be
installed in a sheltered place, e.g. under the slope of a
roof, inside a balcony or in a protected recess.
The place of installation must be free of dusts, flam-
mable materials or objects, or corrosive gases.
The boiler is arranged for wall mounting and comes as
standard with a hooking bracket. Wall fixing must en-
sure stable and effective support for the generator.
If the unit is enclosed in a cabinet or mounted
A
alongside, a space must be provided for re-
moving the casing and for normal mainte-
nance operations. fig. 27 gives the minimum
distances to be respected.

2.3 Plumbing connections

Important
The heating capacity of the boiler must be previously established by calculating the building's heat requirement accor-
ding to the current regulations. To ensure proper operation and long boiler life, the plumbing system must be adequately
sized and complete with all the necessary accessories, including a room thermostat, a thermostatic radiator valve
(TRV), etc. The system flow and return pipes must have a diameter of at least 22 mm for the first 3 m of length from the
unit.
If the system delivery and return pipes follow a path where air pockets could form in certain places, it is advisable to
install vent valves at these points. Also, install type "A" drain cocks at the lowest points in the system to allow complete
emptying.
The temperature drop between the delivery manifold and the return to the boiler should not exceed 20 °C.
A flow rate of at least 6 litres/min through the heat exchanger is required.
B
Do not use the water system pipes to earth electrical appliances.
18
BlueHelix HiTech RRT C
A
B
C
D
cod. 3541V691 - Rev. 00 - 04/2022
fig. 27
Min. 2.5 cm
Min. 20 cm
Min. 30cm
Min. 60 cm (via an openable panel)
EN