Checking Leak-Tightness - Vaillant ecoTEC plus VU 446/5-5 (H-GB) Installation And Maintenance Instructions Manual

7 Start-up
Set values, G20 natural gas (→ Page 61)
Set values, G31 liquefied petroleum gas (→ Page 62)
6. Remove the front casing. (→ Page 10)
Applicability: VU 446/5-5 (H-GB)
Condition: The CO₂ content must be adjusted
1
▶
Set the CO₂ content (value with front casing removed)
by turning the screw (1).
▶
Only carry out the adjustment in increments of 1/8
turn and wait approximately 1 minute after each ad-
justment until the value stabilises.
Note
Turn anti-clockwise: Lower CO₂ content
Turn to clockwise: Higher CO₂ content
Applicability: VU 606/5-5 (H-GB)
Condition: The CO₂ content must be adjusted
1
▶
Set the CO₂ content (value with front casing removed)
by turning the screw (1).
▶
Only carry out the adjustment in increments of 1/8
turn and wait approximately 1 minute after each ad-
justment until the value stabilises.
Note
Turn to the left: Higher CO₂ content
Turn to the right: Lower CO₂ content
7. Once the setting is finished, lock the check programme.
8. If an adjustment is not possible in the specified adjust-
ment range, do not start up the product.
28
–
Inform Customer Service.
9. Install the front casing. (→ Page 11)
7.10.6 Gas conversion procedure
Note
The conversion procedure is described in the in-
structions that are included with the conversion
set that is supplied with the product.
▶
Follow the instructions in the manual for the conversion
set to carry out the gas conversion on the product.
7.11

Checking leak-tightness

▶
Check the gas pipe, the heating circuit and the hot water
circuit for leak-tightness.
▶
Check that the air/flue pipe has been installed correctly.
Condition: Room-sealed operation
▶
Check whether the vacuum chamber has been closed
tightly.
7.11.1 Checking the heating mode
1. Ensure that there is a heating demand at the product.
2. Call up Live monitor.
Status codes – Overview (→ Page 45)
◁
If the product is working correctly, the display shows
S.04.
7.11.2 Checking the hot water generation
Condition: Cylinder connected
Danger!
Risk of death from legionella.
Legionella multiply at temperatures below
60 °C.
▶
Ensure that the end user is familiar with
all of the Anti-legionella measures in or-
der to comply with the applicable regula-
tions regarding legionella prevention.
▶
Make sure that the cylinder thermostat is requesting
heat.
1. Call up Live monitor.
Status codes – Overview (→ Page 45)
◁
If the cylinder charging is carried out correctly, S.24
appears in the display.
2. If you have connected a control to the installation and
you can set the domestic hot water temperature on this
control, set the domestic hot water temperature on the
boiler to the maximum possible temperature.
3. Adjust the target temperature for the connected do-
mestic hot water cylinder to the control.
◁
The boiler adopts the set target temperature which
is set on the control.
Installation and maintenance instructions ecoTEC plus 0020261389_02