HDG F20 - Cleaning the Flue Gas Pipe; Cleaning the Cleaning System, Heat Exchanger Surfaces and Flue Gas Flap

7 Cleaning and servicing the heating system – Procedure
72
CLEANING THE FLUE GAS PIPE
1. Allow the fire in the boiler to burn out and cool off.
6. Sweep any deposits into the flue gas collection box, but not in the
direction of the boiler.
7. Screw the inspection hatch (2) securely back onto the flue gas
pipe (3) with the wing nut (1).
✓ The cleaning of the flue gas pipe is completed.
CLEANING THE CLEANING SYSTEM, HEAT EXCHANGER SURFACES AND
FLUE GAS FLAP
Important!
✎ Observe the “Generally applicable safety instructions” in this
section.
2. Unscrew the wing nut (1) on
the inspection hatch cover (2).
3. Remove the inspection hatch
cover (2) from the flue gas
pipe (3).
4. Check whether the flue gas
pipe (3) needs cleaning.
5. If necessary, extract the ash
from the flue gas pipe (3)
using a vacuum cleaner.
Figure 7/6 - Clean the flue gas pipe
1
2
3
Important!
✎ Observe the “Generally applicable safety instructions” in this
section.
Caution!
Risk of injury from automatically driven components
Working on the flue gas fan can lead to hand injuries due to the
moving parts.
Disconnect the boiler from the power mains when working on the
flue gas fan.