Filling The Condensate Siphon; Switching On The Product; Filling The Heating Installation; Checking The Gas Flow Rate - Vaillant ecoTEC plus Installation And Maintenance Instructions Manual

7.7

Filling the condensate siphon

C
1. Unclip the lower section of the siphon (1) from the up-
per section of the siphon (2).
2. Remove the float (3).
3. Fill the lower section of the siphon with water up to
10 mm below the upper edge of the condensate drain
pipework.
4. Re-insert the float (3).
Note
Check whether the float is present in the
condensate siphon.
5. Clip the lower section of the siphon (1) into the upper
section of the siphon (2).
7.8

Switching on the product

▶
Switch on the product via the main switch installed on-
site.
7.9

Filling the heating installation

1. Flush the heating installation through.
2. Fill the heating installation with the maximum possible
volume flow.
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.
0020238195_01 ecoTEC plus Installation and maintenance instructions
2
B
A
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
3
▶
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.
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.
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 isolator cock (1).
3. Undo the sealing screw on the measuring nipple (2).
4. Connect a pressure gauge to the measuring nipple (2).
5. Open the gas isolator cock (1).
6. Start up the product with check programme P.01
(system with eBUS controller) or P.03 (system without
eBUS controller).
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