Internal Leak Testing; Measuring The Ionization Current; Measuring The Inlet Gas Pressure; Checking And Adjusting The Gas/Air Ratio - Buderus Logamax Plus GB142-24 Installation Instructions Manual

11 Inspection

11.3 Internal leak testing

 Switch off the heating system using the main switch.
 Test for internal leaks of the gas burner fitting on the inlet
side, applying a test pressure of 7.0 inch W.C.
(17.4 mbar) in case of natural gas and 11.0 mbar
(27.4 mbar) in case of LPG.
After one minute the pressure must not have dropped by
more than 3.8 inch W.C. (10 mbar).
 If the pressure has dropped more, you must check all
gaskets and joints upstream of the gas burner fitting for
leaks using a foaming agent. Repeat the pressure test if
no leaks are found. If the pressure has again dropped by
more than 3.8 inch W.C. (10 mbar) per minute you will
have to replace the gas burner fitting.

11.4 Measuring the ionization current

See subsection 8.12 "Measuring the ionization current",
page 37.

11.5 Measuring the inlet gas pressure

See subsection 8.7 "Inlet gas pressure", page 33.

11.6 Checking and adjusting the gas/air ratio

See subsection 8.8 "Checking and adjusting the gas/air
ratio", page 34.
11.7 Carrying out a gas leak test in operating
conditions
See subsection 8.9 "Carrying out a leak test in operating
conditions", page 36.
11.8 Measuring the carbon monoxide content
(CO)
See subsection 8.10 "Measuring the carbon monoxide
content (CO)", page 36.
11.9 Carrying out a pressure test of the
heating system
See chapter 8 "Start-up procedure", page 30.
11.10 Checking the functioning and the safety
of the air intake and flue gas conduit
See subsection 8.5 "Checking the combustion air/flue gas
connection", page 32.

11.11 Checking venting systems

Check air intake and flue gas for obstruction or damage.
48 Logamax plus GB142-24/30/45/60 - We reserve the right to make any changes due to technical modifications!