Roberts Gorden Combat HF 30 v4, Инструкция по установке, пусконаладке, обслуживанию и эксплуатации

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CABINET HEATER
4.4 Fuel Oil Supply
4.4.1 Fuel Storage Tank
The fuel oil storage tank should be located as close as possible to the heater, but outside of the building. The tank must
not be mounted directly on the ground but should be raised clear of the ground on suitable trestles, and/or located in a
concrete or metal catch pit. The catch pit should be constructed to have a net volume of at least 10% greater than the
volume of the tank, and be oil tight.
4.4.2 Fuel Pipes
The fuel pipes must be sized to ensure an adequate supply of oil to the entire installation. Galvanised pipe must not be
used on oil installations (see Table 2.3 for fuel usage).
The fuel pipe must terminate at each heater with an isolating manual valve, a fire valve and a fuel filter (see Fig. 3.1).
The fusible link of the fire valve should be installed so as to be 100 mm (4 inches) above the burner.
The heater’s oil burner pump inlet is provided with a flexible oil line which should be used for the final connection.
When making the final connection to the heater, care should be taken not to impede the removal of any of the removable
panels of the heater. All COMBAT® oil fired cabinet heaters are supplied with burner pumps fitted for one pipe systems.
4.4.3 Gravity Feed System
The simplest installation is a gravity feed system as in Fig. 3.1. This system relies on the head of the fuel in the tank to
push the fuel through the system.
4.4.4 B. M. Oil Lifter
Where a gravity feed system cannot be used, a B.M. Oil Lifter may be used for small installations up to the equivalent
to a single model 050 on minimum lift or a single model 020 on maximum lift (see Fig 4.1).
The fuel output from the oil lifter is gravity fed.
The B.M. Oil Lifter requires a constant 230 volt 50 Hz single phase electrical supply adjacent to its position. The
maximum pipe size to be used on the suction side is 1/4" I.D. (5/16" O.D. (8mm)); for maximum loading of oil lifters
refer to graph on Fig. 4.1. Consult the manufacturers information regarding the need to prime these devices.
4.4.5 Pressurised Systems
For larger installations a pressurised system may be used. In this type of system a pump draws fuel from the tank and
then pushes it through the installation under pressure. The pressure is controlled at the pump by a pressure relief valve
at approximately 0.8 BAR (12 psi ).
When a pressurised system is used, a pressure reducing valve set at approximately 0.3 BAR (5 psi), should be
installed on the fuel inlet to each heater after the manual isolating valve. This is to protect the oil burner pump from the
danger of possible over pressure under fault conditions.
Fig. 4.2 shows a suggested scheme.
The electrical supply for the pumped installation will depend upon the type of pumps chosen, but will normally be set to
run continuously.