Vaillant ecoMAX 665 Installation And Maintenance Manual - page 22
22
Installation and maintenance manual ecoMAX 665
Note!
Adjust only in increments of 1/8 turn and wait
approx. 1 minute after each adjustment until
the value stabilises.
- Turn to the left (anti-clockwise):
higher CO
2
content
- Turn to the right (clockwise):
lower CO
2
content
Settings
Natural
gas H
tolerance
CO2 after 5 minutes full-load operation
8.8 +/- 1.0
set for Wobbe index Wo
15.0
Table 5.2 Factory gas setting
• After the setting procedure, put the air intake pipe
back up.
• Check the CO
2
content again.
If necessary, repeat setting.
• Quit the P.1 test program by pressing the “+” and “i”
keys simultaneously. The measuring operation is also
quit when no key has been pressed for 15 minutes.
• Screw the screw (4) in.
• Put on the appliance casing.
5.3 Functional test
I
0
Fig. 5.5 Functional test
After installing the appliance and setting the gas, per-
form a functional test before commissioning the appli-
ance and handing it over to the user.
• Commission the appliance in accordance with the
instructions in the relevant operating manual.
• Check the appliance for gas and water leaks.
• Check the flue system for leaks and that it is fixed
properly.
• Check over-ignition and that the flame on the burner
is burning evenly.
• Check that the heating and hot water generation are
working properly.
• Pass the appliance on to the user.
The Vaillant ecoMAX 665 possesses status codes that
display the operating status of the appliance in the DIA
system display. A functional test of the hot water opera-
tion and heating operation can be carried out using
these status codes by pressing the “i” key.
Filling the storage tank
• Switch on the appliance and the connected hot water
cylinder.
• Make sure that the cylinder thermostat is requesting
heat.
• Press the “i” key.
When the cylinder is correctly charged, the status code
“S.24” appears in the display.
Fig. 5.6 Display during recharging
Heating mode
• Switch on the appliance.
• Make sure that heat is being requested.
• Press the “i” key.
When the heating is running correctly, the status code
“S.4” appears in the display.
Fig. 5.7 Display during heating mode
5 Putting the device into service