Setting The Co₂ Content; Removing The Gas-Air Mixture Unit - Vaillant ecoFIT sustain 615 Installation And Maintenance Instructions Manual

Checking the CO₂ content
Great Britain
front casing on / front casing off
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. (→ Page 25)
11.4 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
CO₂ at full load
Set for Wobbe index
W₀
O₂ at full load
CO at full load
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.
0020277252_00 ecoFIT sustain Installation and maintenance instructions
1
B
Great Britain
front casing on / front cas-
ing off
Natural gas
G20
9.2 ±0.2 %
14.09 kW⋅h/m³
4.5 ±1.8 vol. %
≤ 250 ppm
≤ 0.0027
Inspection and maintenance 11
11.5

Removing the gas-air mixture unit

Note
The gas-air mixture unit consists of three main
components:
– Fan
– Gas valve,
– Burner cover
1. Switch off the product via the main switch.
2. Close the gas isolator cock.
3. Remove the front casing. (→ Page 9)
D
4. Remove the screw (1).
5. Push the clip upwards.
6. Remove the flue gas pipe (2).
5
4
3
B
7. Remove the air intake pipe (3).
8. Remove the plugs from the gas valve (4) and from the
fan (5).
1
A
B
C
2
A
25