Roberts Gorden POP-ECA/PGP-ECA 015 to 0100 Pressure Switch, Page 8, .5 through Page 9, Section

COMBAT® CABINET HEATERS INSTALLATION, COMMISSIONING, OPERATION AND SERVICE MANUAL

10.5.1 Pressure Switch

WARNING

Electrical Shock Hazard

Use extreme caution while commissioning.

Failure to follow these instructions can result in death or electrical shock.

Setting of the pressure switch must only be carried out as part of a complete commission which includes combustion testing.

Remove the cover of the pressure switch. With the burner firing, turn the pressure switch dial to the setting indicated for that model and burner. See

Page 8, Section 4.5 through Page 9, Section 4.6.

10.5.2 Complete the Commissioning

Ensure that all covers are fitted correctly and all test points are properly sealed.

10.5.3 High/Low and Modulating Burners

After setting the minimum burner input and combustion, the following check must be made: Run the heater on low fire for a minimum of 15 minutes. Check the flue gas temperature. If the flue gas temperature falls below 125° C, increase the low fire gas setting until the temperature reaches 125° C, otherwise condensation may form.

10.6 Commissioning the Burner (Oil Heaters)

Check all valves between the fuel tank and the heater are open, including the fire valve.

Ensure that oil is available at the heater inlet and that the air has been vented from the fuel pipe installation. Vent the air by opening the bleed screw on top of the fuel filter. On pressurised systems, check that the installation is running at the correct pressure. B.M. oil lifters will need priming.

10.6.1

Ensure that the burner head and air damper settings are adjusted for the correct burner and that the correct atomising nozzle is fitted. See Page 10, Section 4.7 and the burner reference number on the data plate.

10.6.2 Preparation for Burner Pressure Test

Attach a pressure gauge 0-15 BAR (0 - 200 psi) to the burner pump pressure test port. (See manufacturer’s information). A test manifold gives you the facility for the connection of the pressure gauge and the venting of the pump.

10.7 Control - Oil-Fired Heaters

For High/Low oil burners, follow the general sequence as described below and also have extra functional stages related to air damper positions. Refer to the burner manufacturer’s instructions for further detail.

10.7.1 Description of Oil Fired Heater Control

The oil fired burners fitted to the heater are controlled by a fully automatic control and photoelectric flame monitor unit. This control ensures the safe start,

ignition and stop sequence and also monitors the flame. If the flame should fail the control will go into "lockout". The button on ther front of the control will illuminate to indicate lockout. Press the button to reset the control to restart the burner firing cycle.

Figure 18: Oil-Fired Heaters Control Box Sequence

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