Observing Inspection And Maintenance Intervals; Procuring Spare Parts; Checking The Co₂ Content; Setting The Co₂ Content - Vaillant ecoFIT pure 825 Installation And Maintenance Instructions Manual

11.2 Observing inspection and maintenance
intervals
▶
Adhere to the minimum inspection and maintenance in-
tervals. The inspection may require maintenance to be
carried out earlier, depending on the results.
Inspection and maintenance work – Overview
(→ Page 38)
11.3

Procuring spare parts

The original components of the product were also certified
by the manufacturer as part of the declaration of conformity.
If you use other, non-certified or unauthorised parts during
maintenance or repair work, this may void the conformity of
the product and it will therefore no longer comply with the
applicable standards.
We strongly recommend that you use original spare parts
from the manufacturer as this guarantees fault-free and safe
operation of the product. To receive information about the
available original spare parts, contact the contact address
provided on the reverse of these instructions.
▶
If you require spare parts for maintenance or repair
work, use only the spare parts that are permitted for the
product.
11.4 Checking the CO₂ content
1. Start up the product with check programme (P.01).
2. Wait until the value that is read is stable.
–
Waiting period for reading a stable value: 5 min
1
3. Unscrew the cover from the flue gas analysis point (1).
4. Measure the CO₂ content at the flue gas analysis point
(1).
5. Compare the measured value with the corresponding
value in the table.
Checking the CO₂ content
Great Bri-
tain
Removed
front cas-
ing/installed
front casing
Natural gas
G20
9.2 ±1 %
◁
The value is OK.
▽
The value is not OK; you cannot start up the
product.
▶
Set the CO₂ content.
0020230531_01 ecoFIT pure Installation and maintenance instructions
Inspection and maintenance 11
11.5 Setting the CO₂ content
Conditions: The CO₂ content must be adjusted
A
▶
Remove the sticker.
▶
Turn the screw (1) to set the CO₂ content (value with
front casing removed).
◁
To increase the CO₂ content: Turn anti-clockwise
◁
To decrease the CO₂ content: Turn clockwise
▶
Only carry out the adjustment in increments of 1/8 turn
and wait approximately 1 minute after each adjustment
until the value has stabilised.
▶
Compare the measured value with the corresponding
value in the table.
Setting the CO₂ value
Great Britain
Removed front cas-
ing/installed front
casing
Natural gas
G20
9.2 ±0.2 %
CO₂ at full
load
Set for 14.09 kW⋅h/m³
Wobbe
index W₀
4.5 ±1.8 vol. %
O₂ at full
load
≤ 250 ppm
CO at full
load
≤ 0.0027
CO/CO₂
▽
If the setting is not in the specified adjustment range,
you must not start up the product.
▶
Inform Customer Service.
▶
Check whether the air-quality requirements with regard
to carbon monoxide are fulfilled.
▶
Fit the front panel.
1
B
25