Buderus 800-24 Installation And Servicing Instructions page 28

2 Initial start-up
Slowly open the gas service valve.
Insert the mains plug and move the mains switch to "I".
After about 30 seconds the burner will fire.
Measure the gas distribution pressure and enter into the
certificate.
The gas distribution pressure must be
min. 17 mbar, max. 25 mbar, rated distribution
pressure 20 mbar for natural gas H and
min. 30 mbar, max. 50 mbar, rated distribution
pressure 37 mbar for LPG.
Pull off the measuring hose and tighten up the screw plug
on the test nipple.
NOTE!
If the required connection pressure is not
available or too high, contact your gas supplier
or TRANSCO.
Ensure all disturbed joints and connections are checked for
gas tightness on completion of tasks.
2.2.4 Checking and setting the gas/air ratio
The gas/air ratio can be checked and set in two different ways:
– using a pressure gauge;
– in accordance with the CO
Subject to modifications resulting from technical improvements !
28 Installation and servicing instructions condensing gas boiler 800 - 24/29/43/60 and 800 - 24T25/29T25 H/V • edition 02/2006
content.
2
fig. 35 Measuring the gas distribution pressure
(Honeywell gas units)
fig. 36 Measuring the gas distribution pressure (SIT gas units)
fig. 37 Service button
Buderus • http://buderus-domestic.co.uk