Unigas TN90, Руководство по установке, использованию и обслуживанию

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C.I.B. UNIGAS - M039259CA
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between the fan and the burner and according to the fan features as well.
Matching the burner to the boiler
The burners described in this manual have been tested with combustion chambers that comply with EN676 regulation and whose
dimensions are described in the diagram . In case the burner must be coupled with boilers with a combustion chamber smaller in dia-
meter or shorter than those described in the diagram, please contact the supplier, to verify that a correct matching is possible, with
respect of the application involved. To correctly match the burner to the boiler verify the necessary input and the pressure in combu-
stion chamber are included in the burner performance curve; otherwise the choice of the burner must be revised consulting the burner
manufacturer. To choose the blast tube lenght follow the instructions of the boiler manufacturer. In absence of these consider the fol-
lowing:

Cast-iron boilers, three pass flue boilers (with the first pass in the rear part): the blast tube must protrude no more than 100 mm into
the combustion chamber.

Pressurised boilers with flame reversal: in this case the blast tube must penetrate at least 50 - 100 mm into combustion chamber in
respect to the tube bundle plate.
The length of the blast tubes does not always allow this requirement to be met, and thus it may be necessary to use a suitably-sized
spacer to move the burner backwards or to design a blast tube tha suites the utilisation (please, contact the manifacturer).
Hidraulic system
The pumps that are used can be installed both into single-pipe and double-pipe systems.
Single-pipe system: a single pipe drives the oil from the tank to the pump’s inlet. Then, from the pump, the pressurised oil is driven to
the nozzle: a part comes out from the nozzle while the othe part goes back to the pump. In this system, the by-pass pulg, if provided,
must be removed and the optional return port, on the pump’s body, must be sealed by steel plug and washer.
Double-pipe system: as for the single pipe system, a pipe that connects the tank to the pump’s inlet is used besides another pipe that
connects the pum’s return port to the tank, as well. The excess of oil goes back to the tank: this installation can be considered self-ble-
eding. If provided, the inside by-pass plug must be installed to avoid air and fuel passing through the pump.
Burners come out from the factory provided for double-stage systems. They can be suited for single-pipe system (recommended in the
case of gravity feed) as decribed before.To change from a 1-pipe system to a 2-pipe-system, insert the by-pass plug
G (as for ccw-rota-
tion- referring to the pump shaft).
Caution: Changing the direction of rotation, all connections on top and side are reversed.
pipeline length in meters.
Bleed
Bleeding in two-pipe operation is automatic : it is assured by a bleed flat on the piston. In one-
pipe operation, the plug of a pressure gauge port must be loosened until the air is evacuated
from the system.
1 Inlet G1/2
2 To the nozzle G1/2
3 Return G1/2
4 Pressure gauge port G1/4
5 Vacuum gauge port G1/4
6 Pressure governor
ATTENTION! The bellows unit provided is made of canvas and is provided with blocking spacers to avoid breaking it during
installation: first place the bellows unit between flanges, then remove the spacers. Canvas has to be stretched after the instal-
lation, but not stressed.
Suntec TA
Suntec TA..
Oil viscosity 3 ÷ 75 cSt
Oil temperature 0 ÷ 150°C
Min. suction pressure - 0.45 bar to avoid gasing
Max. suction pressure 5 bar
Max. return pressure 5 bar
Rotation speed 3600 rpm max.
G