Description Of The Appliance; Optional Accessories - Beretta NOVELLA 24-31-45 RAI Installation Manual

2

DESCRIPTION OF THE APPLIANCE

2.1
Description of the appliance
Novella boilers are gas fuelled boilers for
domestic heating.
They are equipped with an atmospheric bur-
ner and a cast iron primary heat exchanger.
They incorporate an open (type B11BS) com-
bustion chamber and are fitted with a hood
that ensures proper flue gas venting even with
a fluctuating flue draught.
They are also equipped with a flue gas
thermostat, as required by applicable safety
standards.
The burner is a stainless steel unit with stabili-
sed flame and smooth ignition.
The burner is fitted with an ionisation type
flame detection system.
The boiler's control and safety devices con-
form to applicable technical and safety stan-
dards and are enclosed in a functional control
panel integrated in the body of the appliance.
Novella boilers use total shut-down logic
and do not waste energy because they only
start up when heat is actually needed by the
central heating system (i.e. when the room
thermostat trips).
Novella boilers can be connected to a storage
cylinder to produce domestic hot water, and
can be equipped with temperature controllers
in the form of specific accessories.
Installation, maintenance and access to inter-
nal components is facilitated by a large front
panel.
The key features of these boilers include:
- electronic ignition with ionisation flame
detection
- adjustable smooth ignition
- gas supply solenoid valve with built-in pres-
sure stabiliser and double shutter for burner
control
- domestic hot water temperature control
- water circuit temperature and pressure
gauge
- provision for room thermostat or timer.
Novella RAI PV models also feature:
- central heating circuit pump
- 12 litre expansion vessel
- 3 bar central heating circuit safety valve.
2.2

Optional accessories

- Wall-mounted weekly timer thermostat (part
number 1100279)
- Pump manifold kit (part number 694769)
- High head pump kit (part number 1100269)
- RO120 storage cylinder (part number
696339)
- Pump or valve controlled multizone central
heating kit with total shut-down function
(part number 696439)
- Lifting brackets (part number 696429)
5