ENFRRU PL DE IT ES NLEN • 17 664Y6100 • BHeatMaster® 71 - 101 - 201BURNER CHARACTERISTICS1. Burner tube2. Ignition and ionisation electrode3. Gas valve4. Gas connection5. Flame sight glass6. Fan7. Venturi tubeThe BG 2000-M burners are pre-adjusted for naturalgas in the factory.Conversion to propane:Prohibited in Belgium.BURNER ADJUSTMENTWhen the burner operates at full power, the CO2 must be 8.8% to 9.2%(natural gas) or 10.5% to 10.6% (propane).If necessary adjust the CO2 by turning the screw in the clockwisedirection to reduce and the anti-clockwise to increase. (see photo)1752643BG 2000-M/10112564 73BG 2000-M/201172563 4BG 2000-M/71IncreaseReduceBG 2000-M/201IncreaseReduceBG 2000-M/71 - 101