Buderus Logano GE434 Maintenance Instructions Manual page 28

6 Heating system start-up
Draught
Recommendation: 3 Pa (0.03 mbar) and 10 Pa
(0.1 mbar).
RISK TO LIFE
through toxic flue gases.
! Only operate these boilers with a
WARNING!
chimney or flue gas system, which
supplies the stated draught during
operation.
PLEASE NOTE
Higher draught leads to avoidable heat
losses, leading to higher heating costs. In
addition, errors can occur during flue gas
loss tests.
A draught stabiliser is recommended for
values above 10 Pa (0.1 mbar).
Flue gas loss
Flue gas losses must not be higher than 9 %.
Higher values indicate test errors or boiler and/or burner
contamination.
Check the test arrangements or clean the system (see
Chapter 8 "Heating system inspection and
maintenance", page 35).
Carbon monoxide content
CO values in the airless state must be below 400 ppm or
0.04 % vol.
Values above 400 ppm indicate an incorrect burner
adjustment, incorrect device setup, burner and/or heat
exchanger contamination or burner faults.
In such cases, identify and remedy all related causes.
We reserve the right to make any changes due to technical modifications.
Commissioning and maintenance instructions Logano GE434 Gas-fired special boiler • Issue 02/2003
28
Buderus Heiztechnik GmbH • http://www.heiztechnik.buderus.de