Vaillant ecoCOMPACT VCC4 Series User Manual

Start-up 7
0020181421_04 ecoCOMPACT Installation and maintenance instructions 25
1
1
2
2. Use a screwdriver to undo the sealing screw on the gas
valve's measuring connection (1) (bottom screw).
3. Connect a pressure gauge (2) to the measuring nipple
(1).
4. Open the gas isolator cock.
5. Start up the product with the check programme P.01.
6. Measure the gas connection pressure against atmo-
spheric pressure.
Applicability: Germany
OR Belgium
OR Austria
– Permissible gas connection pressure for opera-
tion with G20 natural gas: 1.7 … 2.5 kPa
Applicability: Belgium
– Permissible gas connection pressure for opera-
tion with G25 natural gas: 2.0 … 3.0 kPa
Applicability: Germany
– Permissible gas connection pressure for opera-
tion with G25 natural gas: 1.8 … 2.5 kPa
Applicability: Belgium
– Permissible gas connection pressure for opera-
tion with G31 liquid gas: 2.5 … 4.5 kPa
Applicability: Austria
OR Germany
– Permissible gas connection pressure for opera-
tion with G31 liquid gas: 4.25 … 5.75 kPa
7. Switch off the product.
8. Close the gas isolator cock.
9. Remove the pressure gauge.
10. Tighten the screw on the measuring nipple (1).
11. Open the gas isolator cock.
12. Check the measuring nipple for gas tightness.
Conditions: Gas connection pressure not in the permissible range
Caution.
Risk of material damage and operating
faults caused by incorrect gas connec-
tion pressure.
If the gas connection pressure lies outside
the permissible range, this can cause oper-
ating faults in and damage to the product.
▶ Do not make any adjustments to the
product.
▶ Do not start up the product.
▶ If you are unable to remedy the fault, contact the gas
supply company.
▶ Close the gas isolator cock.
7.15.2 Checking the CO₂ content and, if necessary,
adjusting it (air index setting)
Applicability: Except Belgium
1
▶ Start up the product with the check programme P.01.
▶ Wait at least five minutes until the product reaches its
operating temperature.
▶ Measure the CO₂ content at the flue gas analysis point
(1).
1. Compare the measured value with the corresponding
value in the table.
Gas adjustment values as set at the factory (Applicab-
ility: Austria)
Gas adjustment values as set at the factory (Applicab-
ility: Germany OR Belgium)
Conditions: The CO₂ content must be adjusted
▶ Remove the front casing.

Vaillant ecoCOMPACT VCC4 Series Specifications

General

Brand	Vaillant
Model	ecoCOMPACT VCC4 Series
Category	Boiler
Language	English