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7.14.4 Checking the gas flow pressure
1006/5-5
1206/5-5
1
1.
Ensure that the gas inlet working pressure can be
obtained with all other gas appliances in the property
working.
2.
Close the gas stopcock.
3.
Use a screwdriver to undo the sealing screw of the test
nipple (1) at the gas valve assembly.
4.
Connect a manometer to the test nipple (1).
5.
Open the gas stopcock.
6.
Start up the product with the check programme P.01.
7.
In addition, ensure that maximum heat can be dissip-
ated into the heating system by turning up the room
thermostat.
8.
With the boiler operating at full load check that the gas
inlet working pressure at the reference test point (1)
complies with the requirements.
–
Permissible gas flow pressure for operation with
natural gas H: 1.7 to 2.5 kPa (17.0 to 25.0 mbar)
9.
Should the pressure recorded at the reference test point
in the boiler be lower than indicated check if there is
any blockage in the pipework or if the pipework is un-
dersized.
Condition: Gas flow pressure not in the permissible range
Caution.
Risk of material damage and operating
faults caused by incorrect gas flow pres-
sure.
If the gas flow pressure lies outside the per-
missible range, this can cause operating
faults in and damage to the product.
0020134823_07 ecoTEC plus Installation and maintenance instructions
▶
If you cannot correct the failure, notify the gas supply
company and proceed as follows:
806/5-5
▶
End the check programme P.01.
▶
Allow the boiler to cool down by allowing pump overrun
to operate for a minimum of two minutes.
▶
Close the gas stopcock.
▶
Remove the pressure gauge and retighten the sealing
1
screw (1) for the measuring nipple.
▶
Open the gas stopcock.
▶
Check the test nipple for gas tightness.
▶
Close the gas stopcock.
▶
Install the front casing. (→ Page 10)
▶
Disconnect the product from the power grid.
▶
You must not start up the boiler.
Condition: Gas flow pressure in the permissible range
▶
End the check programme P.01.
▶
Allow the boiler to cool down allowing pump overrun to
operate for a minimum of two minutes.
▶
Close the gas stopcock.
▶
Remove the pressure gauge and retighten the sealing
screw (1) for the measuring nipple.
▶
Open the gas stopcock.
▶
Check the test nipple for gas tightness.
▶
Install the front casing. (→ Page 10)
▶
Reset boiler controls for normal operation.
▶
Record the appliance gas inlet working pressure (kPa
resp. mbar) in the Benchmark gas boiler commissioning
checklist.
7.14.5 Checking the CO₂ content and, if necessary,
1.
Start up the product with the check programme P.01.
2.
Wait at least five minutes until the product reaches its
operating temperature.
3.
Measure the CO₂ and CO/CO₂ content at the flue gas
analysis point (1).
4.
Compare the measured values with the corresponding
values in the table.
▶
Do not make any adjustments to the
product.
▶
Check the gas installation.
▶
Do not start up the product.
adjusting it (air index setting)
Start-up 7
1
23
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