26
INSTALLATION
The installation of the machine must be carried out by qualified personnel with the requirements of the law and in
accordance with the standards, laws and regulations in force.
Temperature
The operating temperatures of burner and electric parts are:
Ø
minimum 0°C;
Ø
maximum 40°C.
For “XE”, “XEO” and “XP” versions for external installation, when operational temperature are below -10°C the
manufacturer recommends an anti-frost kit,
on demand
,
mounted
i
n the burner protective cabin.
The anti-frost kit maintains the temperature inside the burner cabin to 0°C
when the outdoor temperature drops below
this limit.
BURNER INSTALLATION
The warm air heater is supplied together with a modulating pre-mixed gas burner (series RX), complete with gas ramp,
modulating kit and modulating air sensor: all these elements can form a complete heating unit. The burner is
assembled, wired to the warm air heater and the tri-thermostat, adjusted and tested.
NOTE: For operation with LPG – G31, the RIELLO burners must also have the pilot gas train cod. 20127965 (see
technical data on pages 23, 24 and 29, 30 and 52, 53).
Anyway, during the first start-up and periodical inspections, check that combustion parameters are the ones shown
in the technical data table on Chapter
DATA SHEET
.
If the appliance has to be re-adjusted (for example if the burner is replaced), this operation must be performed by
a qualified engineer, according to the instructions provided in the RX burner manual, delivered together with the
heater.
NOTE: the CO value should range between 0 and 20 ppm
GAS PIPING
Gas piping must be realized in accordance with regulation in force.
The piping diameters must be calculated from:
-
the heat output of the installed air heater,
-
distance from gas meter
The piping must be realized in a way that the total pressure drop from the gas meter and every warm air heater won’t
be superior then:
-
1 mbar for methane gas
-
2 mbar for LPG (Liquified Petroleum Gas)
The reference UNI-CIG standards contain tables of the diameters to be used according to the flow rates and lengths.
Install a tap and a gas filter near the heater.
For methane (G20) be sure that the gas feed system is sufficient to deliver the volume of gas needed.
For LPG adopt a pressure reduction system of two stages, installing a first stage reductor (set at 1,5 mbar) near the
reservoir, and a second stage reductor before internal piping.
Gas interception device and alarm
The system where the warm air heater is installed must have a gas interception and alarm device in case of gas leak
as required by laws and regulations in force.
GAS SHUT-OFF AND ALARM DEVICE
The warm air heater must be provided with a gas shut-off and alarm device to detect any gas leak, in compliance
with national/local laws and regulations in force.
Electrical connections
(see chapter ELECTRICAL DIAGRAMS)
Summary of Contents for AS COND
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