Start-up 7
0020258610_00 ecoVIT exclusiv Installation and maintenance instructions
19
Conditions
: The product design
is not compatible
with the local gas
group
▶
Do not start up the product.
Conditions
: The product design
is compatible
with the local gas group
▶
Proceed as described below.
7.9.2
Checking the gas connection pressure (gas
flow pressure)
1.
Close the gas stopcock.
2.
Remove the upper casing. (
→
Page 9)
2
1
3.
Undo the sealing screw marked "in"
(1)
on the gas valve
assembly.
4.
Connect a manometer
(2)
.
5.
Open the gas stopcock.
6.
Start up the product with check programme
P.01
or the
chimney sweep function.
7.
Measure the gas connection pressure against atmo-
spheric pressure.
–
Permissible gas connection pressure for opera-
tion with G20 natural gas: 1.7 … 2.5 kPa (17.0
… 25.0 mbar)
–
Permissible gas connection pressure for opera-
tion with G25 natural gas: 1.7 … 2.5 kPa (17.0
… 25.0 mbar)
–
Permissible gas connection pressure for opera-
tion with G31 natural gas: 4.25 … 5.75 kPa (42.50
… 57.50 mbar)
8.
Decommission the product.
9.
Close the gas stopcock.
10. Remove the manometer.
11. Tighten the sealing screw
(1)
.
12. Open the gas stopcock.
13. Check the test nipple for gas tightness.
14. Install the upper casing. (
→
Page 10)
Conditions
: Gas connection pressure
not
in permissible range or
stagnation pressure differs from gas flow pressure by more than 1.0 kPa
(10 mbar)
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 eliminate the fault, contact the gas
supply company.
▶
Close the gas stopcock.
7.9.3
Checking the CO
₂
content and, if
necessary, adjusting it (air ratio setting)
1.
Remove the upper casing. (
→
Page 9)
2.
Start up the product with check programme (
→
Page 16)
P.01
.
3.
Wait at least three minutes until the product reaches its
operating temperature.
Note
During the adjustment, the air hose must not
be removed from the gas valve assembly.
The measurement must be carried out with
the air/flue pipe installed to ensure that the
measured values are not distorted.
Conditions
: VKK 226/4; VKK 286/4; VKK 366/4
▶
Measure the CO
₂
and CO content at the flue gas test
point.
Conditions
: VKK 476/4; VKK 656/4
▶
Measure the CO
₂
and CO content at the adapter with
test openings on top of the product.
4.
Compare the measured values with the corresponding
values in the table.
Set values
Unit
Natural
gas
(G20)
Natural
gas
(G25)
(G31)
liquid
gas
CO
₂
after 5
minutes in full
load mode
Vol.
–
%
9.2
±
0.3
9.0
±
0.3
10.0
±
0.3
Set for Wobbe
index W
s
kWh/m
³
15.0
12.4
22.5
O
₂
after 5
minutes in full
load mode
Vol.
–
%
4.1
±
1.80
4.2
±
1.80
5.3
±
1.80
CO content
ppm
≤
50
≤
50
≤
50
