Lennox ROOFTOP FLEXY FXK 100, Installation, Operating And Maintenance

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IOM – FLEXY II – 1007 – E Page 51
Low Heat Injection Pressure Checks
- Switch the control to Low Heat
- Check and adjust if necessary the Outlet pressure to 3.7
mbar (G20) or 5.1 mbar f or Groningue(G25) & 15.3 mbar
f or propane (G31)(fig.18)
- Af ter the adjustment of the low heat, re-v erify the high
heat
- re-position the stoppers and close the pressure ports.
Pressure adjustments table for each ty pe of gas (mbar)
Category
Supply
pressure
Low Heat
Injection min.
High Heat
Injection
G20 20.0 +/- 1 3.7 +/- 0.1 10.4+/- 0.2
G25 (Groningue) 25.0 +/- 1.3 5.1 +/- 0.1 13.1 +/- 0.2
G31 (GPL) 37.0 +/- 1.9 15.3 +/- 0.3 34.3 +/- 0.6
HEATING : GAS BURNER 60 & 120kW
Fig.18