Nova Florida ALTAIR RTN 18, Installation, Use And Maintenance Manual

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3.2.6 On-site measurement of
combustion efficiency
To determine combustion efficiency
the following measurements must be
taken:
• The temperature of the combu-
stion-supporting air.
• The temperature of the smoke and
the percentage of CO
2
in samples
drawn from the hole provided for this
purpose in the smoke 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 com-
plied 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 connec-
ted to the meter, it must be chec-
ked for leaks.
If any part of the system is inac-
cessible 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
ALTAIR 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 stan-
dards 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 magnetic-
thermal trip-switch of a suitable trip-
ping 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 producer accepts no
responsibility whatsoever for any
damage caused due to failure to
earth the system. Gas, water or
heating system pipes are not sui-
table for earthing the system.
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 possi-
ble, as these could damage the circu-
lation 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 hea-
ting system, bear in mind the load
losses caused by radiators, thermo-
static valves, radiator gate valves,
and the configuration of the system
itself.
3.2.10 Installation of original kits
The producer provides original
kits for installing clock programmers,
cards for managing a remote water
storage cylinder, and for installing a
heat-regulating 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 stop-
cock 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 condi-
tions over time, to ensure long-
lasting regular operation of auxiliary
equipment as well, and to minimise
energy consumption, thereby inte-
grating 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.
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