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Initial start-up
Measuring the standing gas-supply pressure
Take the boiler out of service by pressing the mains switch
(fig. 41, item 1) to "0".
Close the gas shutoff valve (fig. 42, item 1).
Set the pressure gauge to "0".
Attach a tube from the pressure gauge to the gas test
nipple (the lower one, see fig. 43, item 2).
Slowly open the gas shutoff valve.
Measure the standing gas-supply pressure.
Measuring the working pressure
Take the boiler out of service by pressing the mains switch
(fig. 41, item 1) to "0".
Close the gas shutoff valve (fig. 42, item 1).
Set the pressure gauge to "0".
Attach a tube from the pressure gauge to the gas test
nipple (the lower one, see fig. 43, item 2).
Slowly open the gas shutoff valve.
Open at least two radiators.
Set the mains switch (fig. 41, item 1) to "1".
Create a heat demand by pressing the chimney sweep
button (fig. 41, item 2), until a LED is visible in the lower
right hand corner (chimney sweep mode).
Measure the working gas-supply pressure and enter in the
start-up report.
The working gas-supply pressure should be between:
a minimum of 17 mbar and a maximum of 25 mbar
(nominal connection pressure of 25 mbar) for Natural gas.
a minimum of 30 mbar and a maximum 50 mbar
(nominal connection pressure 37 mbar for LPG "P"
Pull off the tube from the gas testing nipple.
Tighten the screw of the gas testing nipple.
ATTENTION
If the required connection pressure is not
available or too high, contact your gas supplier
or TRANSCO.
Ensure that all disturbed joints and connections are checked
for gas tightness on completion of tasks.
Subject to modifications resulting from technical improvements!
28
Installation and maintenance instructions for wall-mounted condensing gas boiler 600 - 28C • 01/2004
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fig. 41 Press the chimney sweep button
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fig. 42 Gas valve
pos. 1:
Gas valve closed
pos. 2:
Gas valve open
fig. 43 Measuring the gas-supply pressure
Boulter Buderus Ltd. • http://www.boulter-boilers.com
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