Fondital BALI RTN 18, Инструкция по установке, эксплуатации и обслуживанию

Страница: 13 / 20

3.2.6 On-site measurement of
combustion efficiency
To determine combustion efficiency the
following measurements must be taken:
• The temperature of the combustion-
supporting air.
• The temperature of the flue gas and the
percentage of CO2 in samples drawn
from the hole provided for this purpose
in the flue gas duct.
Take the specific measurements with
the boiler running at normal load.
3.2.7 Connecting to the gas mains
The gas supply pipe must have a cross-
section that is equal to or greater than
that on the burner.
Installation standards must be
complied with and are taken as being
an integral part of this booklet.
Remember that before putting an
internal gas distribution system into
service, before it is connected to the
meter, it must be checked for leaks.
If any part of the system is inaccessible
the tightness test must be carried out
before the pipes are covered up.
The tightness test must not be carried
out using combustible gas. Use air or
nitrogen for this purpose.
Once there is gas in the pipes, checking
for leaks using a naked flame is
forbidden.
Use the products made for this purpose
that are available on the market.
3.2.8 Connecting to the electrical
mains
These boilers have a terminal board for
connection to a three-pole power supply
cable, and a suitable cable clamp to
prevent it from being torn out.
This boiler must be connected to a
230V-50Hz electrical power supply.
When forming the connection respect
the phase/neutral polarity.
During installation relevant standards
must be complied with and are taken
as being an integral part of this
booklet.
A two-pole switch must be fitted
upstream of the boiler to allow all
maintenance work to be carried out in
complete safety.
The power supply to the boiler must be
fitted with a differential magneticthermal
trip-switch of a suitable tripping power.
The electrical power supply must be
safely earthed.
This basic safety requirement must be
checked. In case of doubt, call in
professionally qualified personnel to
check the electrical system carefully.
The Manufacturer accepts no
responsibility whatsoever for any
damage caused due to failure to earth
the system. Gas, water or heating
system pipes are not suitable for
earthing the systemю
3.2.9 Plumbing connections
Before installation, the boiler should be
cleaned in order to remove, as far as
possible, the impurities that may come
from the components as far as possible,
as these could damage the circulation
pump or the heat exchanger.
The heating delivery and return pipes
must be connected to the respective
couplings on the boiler.
When sizing the piping for the heating
system, bear in mind the load losses
caused by radiators, thermostatic valves,
radiator gate valves, and the configuration
of the system itself.
3.2.10 Installation of original kits
The Manufacturer provides original kits
for installing clock programmers, cards
for managing a remote water storage
cylinder, and for installing a heatregulating
unit.
These original kits are to be installed
in compliance with the instructions
supplied with them.
3.3 Filling the system
Once all the connections in the system
have been completed, the heating circuit
can be filled.
This operation must be carried out
carefully, and in the following steps:
• Open the bleeding valves on the
radiators and make sure that the vent
valve installed in the boiler room is
working.
• Gradually open the relevant stopcock to
fill the system and make sure that all
automatic air vents installed in the system
are working properly.
• Close the vent valve as soon as water
comes out of it.
• Use the pressure gauge installed in the
boiler room to check when the pressure
reaches 0.8 / 1 bar.
• Shut the filling stopcock and bleed any
air out again using the bleeding valves
on the radiators.
• Having started the boiler and brought
the system up to its working temperature,
stop the pump and repeat the air
bleeding operations.
• Allow the system to cool and return the
water pressure to 0.8/1 bar.
WARNING
It is essential to treat the water of
domestic heating systems using specific
products that are compatible with
multimetal systems. This must be made
to optimise performance and safety, to
preserve these conditions over time, to
ensure longlasting regular operation of
auxiliary equipment as well, and to
minimise energy consumption, thereby
integrating current laws and standard.
Note: The boiler is equipped with a
drain cock at the front of the unit that
can be used to empty the system
13