A DJ & DG MANUAL
22 of 34 May 12 R2
14. Check combustion as described in combustion and final checkout section (or if the unit contains
DJM, DJT, G-TRAC, X-TRAC, DSTRAC etc. CONTROLS refer to those manuals for proper setup).
15. Once the heat call is satisfied:
a. Ignition controller de-energized.
b. Main gas valve de-energized.
16. Units with M420, M520 and M620 or MR610 modulating gas valves that are vented to the burner
box must have the adjustment cover sealed tight so that the valve will respond properly. Do not
leave cover off after making adjustments. (This is referred to as “top loading” and allows the valve
to respond to the pressure in the burner box).
17. After the combustion has been checked, bring the unit to high fire and check entire manifold for gas
leaks.
18. Adjust airflow through the unit to obtain the rating plate specified airflow.
19. Do a final check of the main and safety shutoff valves and pilot valve for leakage following the valve
manufacturer’s recommendations.
OPERATIONAL CHECK FOR ALL OIL FIRED DJ & DG UNITS
Ensure all oil piping is installed correctly, is clean, is leak free and has a full oil line.
1. Read all of this section and the supplemental information bulletin from the burner manufacturer
before proceeding. It may be necessary to refer to another control manual to perform some of the
operation test procedure and then return to this document to complete the safety checks.
2. Do not start burner when the heat exchanger is:
a. very hot
b. has oil laying in the bottom.
3. Close the main shut-off valve, turn the burner switch off, set controller to call for heat, turn the
burner switch on. The flame ignition control will energize the ignition transformer and solenoid
valve after the pre-purge timing is complete. After the trial for ignition time, the flame ignition
control will de-energize the ignition transformer and solenoid valve and will lock out.
4. Do not start burner unless the supply fan blower access door is secured in place and the burner
5. Open the shut-off valve. Reset the flame ignition control. After the pre-purge, the ignition
transformer and the pilot solenoid valve are energized. Observe the ignition spark for location and
stability. Check flame signal and if necessary, adjust the oil pressure to obtain a stable flame with
the highest steady flame signal. (See separate burner and flame ignition control manuals).
6. Perform a combustion smoke test with unit operating at high fire. Adjust burner if smoke spot test is
3 or higher on ASTM D 2156-63T.
7. Observe the flame and insure that the flame does not impinge on the heat exchanger surface and
that there are no hot spots on the combustion chamber.
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