page 9
1.10 DIMENSIONS - W version for wall installation
Fig. 2
1.220
613
Top view of the
W version
219
212
930
151
Bottom view of
the W version
69
491
40
38
190
Air intake, Ø 60
Air filter
300
28
1.164
119
190
392
113
Rear view of
the W version
ISO 228/1 G1/2”A
gas connection
Electric power supply cable inlet
Flue gas discharge,
Ø 60
page 28
the technical data table. If the gas supply
pressure does not correspond to the value
indicated, use the pressure regulator (second
stage) installed externally to obtain the correct
value
h) remove the pressure gauge tube and tighten
the pressure inlet screw
i) use a special spray or electronic leak detector
to identify any leaks in the gas circuit
j) Put the air heater casing’s right angular panel
back in its position and fasten it in place.
6.2 SWITCHING FROM GAS IN THE THIRD
GROUP (LPG) TO GAS IN THE SECOND
GROUP (NATURAL GAS)
a) Check that the adaptation kit envelope
contains the replacement injector and the
adhesive label on which to indicate the new
type of gas being used, to replace the previous
label.
b) Check that the injector diameter required for
the type of gas to be used (see the technical
data table on page 7) corresponds to the
diameter stamped on the injector.
c) Close the gas on-off valve and disconnect the
electric power supply. Remove the air heater
casing’s right angular panel by first removing
the two screws located on the front (protected
by plastic caps) and then using the point of a
screwdriver as a lever to release the fastening
springs in the rear.
d) Remove the 2 screws which attach the gas
supply pipe connector to the combustion
chamber (fig. 24). Gently remove the
connector until the injector is free and unscrew
it using a 10-mm hex wrench. Insert a new
injector and retighten it to ensure a proper
seal. Put the connector back in place and
attach it to the combustion chamber with the
two screws.
e) on the gas unit, remove the screw block with
pin located on the pressure regulator to reset
regulation operation (fig. 24)
f) start the air heater according to what is
indicated in point 5.2
g) insert the water column pressure gauge tube
into the pressure outlet on the gas unit burner
(fig. 23) after having backed off the closing
screw a few turns. Check that the supply
pressure corresponds to what is indicated in
the technical data table. If the gas supply
pressure to the burner does not correspond
to the value indicated, use the pressure
regulator (fig. 23) to obtain the correct value.
Turn counterclockwise to decrease the
pressure and clockwise to increase the
pressure
h) remove the pressure gauge tube and tighten
the pressure inlet screw. Insert the regulator
protection plug (original equipment)
i) use a special spray or electronic leak detector
to identify any leaks in the gas circuit
j) Put the air heater casing’s right angular panel
back in its position and fasten it in place.
Fig. 24
CHANGING THE TYPE OF GAS
Plastic pressure
regulator screw
Protection plug
Gas unit
Gas injector
Screw block with pin
for gas in group III
Содержание W
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