EngA ENGINEERED AIR base - Small Sh(X) Burner Setup

base A
21
IOM74 November 2020 R105
For initial testing, to avoid high levels of CO overloading the analyzer at high fire, increase the ‘PacMan’
opening to near fully open before starting.
Press Service Mode and set Service Override to 100%.
The burner will be enabled to prepurge and ignition. Allow the heat exchanger to warmup a few minutes.
CAUTION
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Be aware of high discharge temperatures.
Adjust regulator to achieve design manifold pressure.
Connect analyzer to flue.
Adjust the ‘PacMan’ to achieve a high fire air. Refer to the combustion Value Table in Appendix F.
Calculate and clock the high fire gas flow. Adjust regulator as required and re-clock. Once set, lock the
‘PacMan’ in place with the slider set-screw.
Follow the combustion setup sequence noted in appendix G.
Once the above values have been confirmed and set, return to high fire and allow combustion levels to
stabilize. Set Service Override to low fire and observe combustion values to ensure clean combustion
throughout the operating range.
Low fire combustion blower speed must not be lower than 950 rpm.
Navigate to the Save Load tab and press Save Settings.
Combustion setup is now complete.
SMALL SH(X) BURNER SETUP
Combustion setup may only be done using a computer. Refer to the Large SH(X) burner setup for SH and SHX
humidifiers sizes 120 – 650. The following is for the small versions sizes 35-90 which have a turndown of 3:1.
Power the base and enable the fan switch. Connect computer to base.
Select the Combustion Setup tab.
Enable the heat switch.
Follow the combustion Values noted in appendix F.
Press Service Mode, then set Service Override to 100%.
The burner ignition module will be enabled to start the ignition sequence and monitor the air proving switch.