Lennox ROOFTOP FLEXY FXK 100, Installation, Operating And Maintenance, Page: 55 / 110

IOM – FLEXY II – 1007 – E Page 53
Low Heat Injection Pressure Checks
- Switch the control to Low Heat
- Check and adjust if necessary the Outlet pressure to 3.1
mbar (G20) or 3.9 mbar f or Groningen (G25) & 12.6 mbar
f or propane (G31) (f ig.22)
- 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 3.1 +/- 0.1 8+/- 0.2
G25 (Groningue) 25.0 +/- 1.3 3.9 +/- 0.1 10.4 +/- 0.2
G31 (GPL) 37.0 +/- 1.9
12.6 +/- 0.3 28.3 +/- 0.6
HEATING : GAS BURNER 180 & 240kW
Fig.22