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7.8
Filling the condensate trap
C
1.
Unclip the lower section of the condensate trap (1) from
the upper section of the condensate trap (2).
2.
Remove the float (3).
3.
Fill the lower section of the condensate trap with water
up to 10 mm below the upper edge of the condensate
discharge pipe.
4.
Re-insert the float (3).
Note
Check that the float is present in the con-
densate trap.
5.
Clip the lower section of the condensate trap (1) into the
upper section of the condensate trap (2).
7.9
Filling the hot water circuit
1.
Open the water tap to fill the hot water circuit.
2.
Close the water tap once the appropriate volume of
water has flowed out.
◁
The hot water circuit is filled.
3.
Check all connections and the entire system for leak-
tightness.
7.10
Checking the gas flow rate
The gas flow rate has been set during production and does
not require adjustment. With the front casing fitted check the
gas flow rate of the boiler as follows:
▶
Start up the product with the check programme P.01.
▶
In addition, ensure that maximum heat can be dissipated
into the heating system by turning up the room thermo-
stat.
▶
Wait at least 5 minutes until the boiler has reached its
operating temperature.
▶
Ensure that all other gas appliances in the property are
turned off.
▶
Measure the gas flow rate at the gas meter.
▶
Compare the measured values with the corresponding
values in the table.
0020277252_00 ecoFIT sustain Installation and maintenance instructions
2
B
A
3
1
Qnw from the data
plate
15.3
18.4
24.7
25.7
28.6
30.6
35.7
Conditions: Gas flow rate not in the permissible range
▶
Check all of the piping and ensure that the gas flow rates
are correct.
▶
Only put the product into operation once the gas flow
rates have been corrected.
Conditions: Gas flow rate in the permissible range
▶
End the check programme P.01.
▶
Allow the boiler to cool down by allowing pump overrun to
operate for a minimum of 2 minutes.
▶
Record the boiler maximum gas flow rate onto the
Benchmark gas boiler commissioning checklist.
7.11
Checking and adjusting the gas settings
Only a qualified competent person is authorised to imple-
ment the settings on the gas valve assembly.
Each destroyed tamper-proof seal must be replaced.
The CO₂ adjusting screw must be sealed.
Never modify the factory setting of the gas pressure regu-
lator of the gas valve assembly.
7.11.1 Checking the gas connection pressure (gas
flow pressure)
2
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 (1).
3.
Undo the sealing screw on the test nipple (2).
4.
Connect a manometer to the test nipple (2).
5.
Open the gas stopcock (1).
6.
Start up the product with check programme P.01 (sys-
tem with eBUS control) or P.03 (installation without
eBUS control).
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 (2)
complies with the requirements.
Start-up 7
H gas in m³/h
−10%
Nom.
+5%
1.62
1.70
1.46
1.95
2.05
1.76
2.61
2.74
2.35
2.72
2.86
2.45
3.03
3.18
2.73
3.24
3.40
2.92
3.78
3.97
3.40
17
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