21
3.8 INVERTING THE DOOR APERTURE
If the door is to be opened to the opposite side, act as follows:
1. Switch the outside nut (or bush) of one hinge with the diametrically opposite cl osure bush; then at the
hinge side, fasten the cone to the door with the inside nut.
2. Repeat the operation for the other hinge.
3. For any adjustment needed, act on the specific hinge nuts.
3.9 BURNER CONNECTION
Before installation you are advised to thoroughly clean the in side of all the fuel supply system pipes in order to
remove any foreign matter that could affect correct operat ion of the boiler. See technical specification tables
and check the max pressure value inside the furnace. The value found on the table may also increase by 20% if
heavy oil is used instead of gas or light oil; furthermore the following checks should also be carried out:
a) Check the internal and external seal of the fuel supply system;
b) Regulate the fuel flow according to the power required by the boiler;
c) Check that the boiler is fired by the correct type of fuel;
d) Check that the fuel supply pressure is within the values specified on the burner rating plate;
e) Check that the fuel supply system is sized for the maximum flow rate necessary for the boiler and that it
is provided with all control and safety devices provided for by the regulations referred to above;
f) Check that the boiler room vents are sized in or der to guarantee the air flow established by the regula-
tions referred to above and that they are in any case sufficient to obtain perfect combustion.
In particular, when using gas:
g) Check that the feeding line and the gas ramp comply with the regulations in force;
h) Check that all the gas connections are sealed;
i) Check that the gas pipes are not used as earth connections for electrical appliances.
If the boiler is not going to be used for some time, close the fuel supply cock or cocks.
IMPORTANT: check that the air spaces betw een the burner draught tube and the manhole are suita-
bly filled w ith thermoinsulating material (Fig. 6).
The boiler is supplied with a piece of ceramic rope.
Should this not suit the burner used, use a braid of different diameter bur same material.
All details on the draught tube length (
P6
), the diameter of the burner hole (
Øb
) and the pressurization are included
in the par. Technical Specifications.
ATTENTION:
when using oil or bio-gas for operation, the door
must have cement insulation and special tie rods. Any alterations
and/or lack of communication during the selling phase shall nullify
the warranty conditions.
1
4
3
2
Fig. 6
KEY:
1. Burner
2. Manhole
3. Thermoinsulating material
4. Flange
P6
Ø
b
Summary of Contents for REX F
Page 1: ...TECHNICAL MANUAL REX REX F REX K REX K F REX DUAL REX DUAL F PRESSURISED STEEL BOILERS...
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Page 18: ...18 1 2 6 3 4 5 9...
Page 30: ......
Page 32: ...ASSEMBLY INSTRUCTIONS STAVES LINING...
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