Start-up 6
0020214491_01 ecoTEC plus Installation and maintenance instructions
21
▶
Remove the pressure gauge and retighten the sealing
screw
(1)
for the measuring nipple.
▶
Open the gas isolator cock.
▶
Check the measuring nipple for gas tightness.
▶
Close the gas isolator cock.
▶
Install the front casing. (
→
Page 10)
▶
Disconnect the product from the power mains.
▶
You must not start up the boiler.
Conditions
: 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 isolator cock.
▶
Remove the pressure gauge and retighten the sealing
screw
(1)
for the measuring nipple.
▶
Open the gas isolator cock.
▶
Check the measuring 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.
6.12.5 Checking the CO
₂
content and, if
necessary, adjusting it (air index setting)
1.
Start up the product with the check programme
P.1
.
2.
Wait at least five minutes until the product reaches its
operating temperature.
1
2
3
4
3.
Measure the CO
₂
content at the flue gas analysis point
(1)
.
4.
Compare the measured value with the corresponding
value in the table.
Settings
Unit
G20 natural
gas
CO
₂
after 5 minutes in full load
mode with front casing closed
Vol.
–
%
9.2
±
1.0
CO
₂
after 5 minutes in full load
mode with front casing removed
Vol.
–
%
9.0
±
1.0
Set for Wobbe index W
₀
kWh/m
³
14.1
O
₂
after 5 minutes in full load
mode with front casing closed
Vol.
–
%
4.53
±
1.8
Conditions
: The CO
₂
content must be adjusted
▶
Unscrew the screw
(2)
and tilt the air intake pipe
(3)
for-
wards by 90°. Do not remove the air intake pipe.
▶
Set the CO
₂
content (value with front casing removed)
by turning the screw
(4)
.
Note
Turn to the left: Higher CO
₂
content
Turn to the right: Lower CO
₂
content
▶
Only carry out the adjustment in increments of 1/8 turn
and wait approximately 1 minute after each adjustment
until the value stabilises.
▶
After performing the adjustments, tilt the air intake pipe
back up.
▶
Check the CO
₂
content again.
▶
If necessary, repeat the setting process.
▶
Press the
button. Full load mode is also exited if no
buttons are pressed for 15 minutes.
▶
Use the screw
(2)
to secure the air intake pipe again.
▶
If an adjustment is not possible in the specified adjust-
ment range, you must not start up the product.
▶
If this is the case, inform Vaillant Customer Service.
▶
Install the front casing. (
→
Page 10)
6.12.6 Checking the CO
₂
content and, if
necessary, adjusting it (air index setting)
1.
Start up the product with the check programme
P.1
.
2.
Wait at least five minutes until the product reaches its
operating temperature.
1
2
3
4
3.
Measure the CO
₂
content at the flue gas analysis point
(1)
.
4.
Compare the measured value with the corresponding
value in the table.
Settings
Unit
G20 natural
gas
CO
₂
after 5 minutes in full load
mode with front casing closed
Vol.
–
%
9.2
±
1.0
CO
₂
after 5 minutes in full load
mode with front casing removed
Vol.
–
%
9.0
±
1.0
Set for Wobbe index W
₀
kWh/m
³
14.1
