ar8370t2002b

Adjusting combustion air quantity

Type ar · topic 83.70 · version 0100 · 2005-07-12

Applies to: MODEL 671 with CODE (H26) Webasto DW 300

Where it sits

Function group 3 Body › 83 Climate control › 83.70 Auxiliary/supplementary heater — Series 671

EinPAS 39 Heating/ventilation/cooling › 39.25 Stationary heater/auxiliary heater › 39.25.30 Heater — Series 671

AR83.70-T-2002B

Adjusting combustion air quantity

11.12.98

MODEL 671 with CODE (H26) Webasto DW 300

Adjusting combustion air quantity

M83.70-0100-01

1 Arresting screw

2 Adjustment ring

Checking

1

Loosen screw in oblong hole in adjustment ring (2)

2

Measure CO2 value

AR83.70-T-1176B

3

Adjust CO2 value

If the CO2 value is too high:
Increase combustion air intake by adjusting adjustment ring (2). If the CO2 value is too low: Decrease combustion air intake by adjusting adjustment ring (2)
Measure CO2 value again, readjust if necessary until specified value is reached.

If sufficient adjustment is not possible:
Check burner head for leakage on air side

Check spray pattern of atomizing nozzle

AR83.70-T-2009B

Check fuel pump pressure.

AR83.70-T-2026A

4

Tighten screw (1) in oblong hole

Referenced documents