PAGE 38 of 79 VULCAIN OIL-FIRED HEATER
LAST UPDATED: JAN 22-2019 COPYRIGHT © SAMUEL JACKSON, INCORPORATED 2018 ALL RIGHTS RESERVED
Step 7
Turn on the main air fan. The Fan Interlock and Air Flow Switch lights should be green
and the actual air velocity pressure will be shown.
Turn on the Combustion Air Fan by pressing the button and verify that the combustion
air velocity pressure reading is displayed on the right side of the page and shows a
reading of 2” water column.
Open the Atomizing Air Valve by pressing the button and verify that the atomizing air
pressure reading is displayed on the right side of the page and shows a reading of 50 psi
for HO-1 and 120 psi for HO-4 and HO-7.
Step 8
This screen allows to purge the oil line with the oil pump on and the oil valve opened.
The fuel pressure is displayed on the top of the screen. The oil pressure should be set at
20 psi for HO-1 and 60 psi for HO-4 and HO-7. Refer to the beginning of the Test
Program section for a more detailed description of the purge line operation and oil
pressure adjustment.
Step 9
The main air fan must be on for this step. The Fan Interlock and Air Flow Switch
indicator lights should be green. Press the “Ignition Transformer Off” button to turn the
ignition transformer on. The “Flame Signal” indicator should remain green (signifying
OFF) when the ignition is transformer is on. For safety, the “Transformer Off” button
will not be available until both the fan interlock and air flow conditions are satisfied for
20 seconds.
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