0020193968_05 ecoTEC exclusive Installation and maintenance instructions
31
1
1
3.
Use a screwdriver to undo the sealing screw of the test
nipple
(1)
at the gas valve assembly.
4.
Connect a manometer
(2)
to the test nipple
(1)
.
5.
Open the gas stopcock.
6.
Start up the product with the check programme
P.01
.
◁
S.93
is briefly displayed.
◁
If the display switches to
S.04
, the product is ready
for the measurement.
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 com-
plies with the requirements.
9.
Measure the gas flow pressure in comparison with the
atmospheric pressure.
–
Permissible gas flow pressure for operation
with G20 natural gas: 1.3 to 2.3 kPa (13.0 to
23.0 mbar)
–
Permissible gas flow pressure for operation
with G31 liquid gas: 2.3 to 4.3 kPa (23.0 to
43.0 mbar)
10.
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
undersized.
11.
Decommission the product.
12.
Close the gas stopcock.
13.
Remove the manometer.
14.
Tighten the screw on the test nipple
(1)
.
15.
Open the gas stopcock.
16.
Check the test nipple for gas tightness.
Condition
: Gas flow pressure not in the permissible range
Caution.
Risk of material damage and operating
faults caused by incorrect gas connection
pressure.
If the gas connection pressure lies outside
the permissible range, this can cause operat-
ing faults in and damage to the product.
▶
Do not make any adjustments to the
product.
▶
Do not start up the product.
▶
If you cannot correct the failure, notify the gas supply
company and proceed as follows:
▶
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
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.
▶
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.
▶
Reset boiler controls for normal operation.
▶
Record the appliance gas inlet working pressure (kPa
resp. mbar) in the Benchmark gas boiler commissioning
checklist.
9.15.4 Calibrating the heat generator and
measuring the CO/CO
₂
content and gas
flow in heating mode
Caution.
Risk of operating faults caused by the
corruption of the measured values during
the calibration.
Operating the product with the front casing
open or not completely installed, or with the
flue pipe open, may negatively influence the
calibration of the gas-air mixture.
▶
During the calibration and when measur-
ing the CO
₂
content, you must operate the
product with the front casing installed and
closed, and with the flue pipe completely
installed.
1.
Start up the product.
Note
Since the combustion can be continuously
monitored by the product, you do not need
to check the combustion.
2.
Ensure that the maximum heat volume can be trans-
ferred to the heating installation by opening the radiator
thermostats.
