Manual# I27028 6-14 Rev. 2 – 11/22/2017
The installation must conform to the requirements of
the local jurisdiction having authority, and, in the
United States, to the latest edition of the National Fuel
Gas Code, ANSI Z223.1/NFPA54. In Canada, the
installation must conform to the latest edition of the
Natural Gas and Propane Installation Code, GSA
B149.1 and/or local codes. Any modifications to the
burner, its gas controls, or wiring may void the
warranty. If field conditions require modifications,
consult the factory representative before initiating such
modifications.
2. Inspect the gas system for any leaks using a bubble test with a non-corrosive soapy
solution. If leaks are found, isolate the main gas supply from the equipment and
correct the leaks.
3. Check the gas supply pressure to the first gas train component on the Munters
supplied equipment. Ensure that it is between the minimum and maximum supply
pressures listed on the rating plate.
Before trying to light the burner, ensure that there is no
power at any of the gas valves when the ignition
control is de-energized. Ensure that the main gas
valves are closed.
4. Ensure that both the process and reactivation fans are running and that the wheel
pressure drop has been adjusted for both. Note that when the burner lights, the
pressure drop of the reactivation loop will steadily increase as the air warms. It is
good practice to set the air flow low (10- 20%) in the unfired condition to
compensate for this effect.
5. Adjust the pilot pressure until the pilot lights reliably (R10 & R15 only). Multiple tries
may be necessary to bleed air from the gas line. If the gas pressure to the pilot is
too high or too low, the pilot may not light properly. The pilot is adjusted at the
factory. If pilot adjustment is necessary in the field, reduce the pilot gas pressure
using the pilot regulator, and then gradually increase the pilot gas pressure until the
pilot lights. Finally, increase the pilot pressure by 1.5 turns on the pilot regulator.
The pilot gas pressure to the pilot should be approximately 3.5" WC. The pilot
flame should be a bushy blue flame inside the first 1/4 of the air wings. See Figure
6-5.
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