Vaillant ecoMAX 646, Руководство по установке и обслуживанию

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Installation and maintenance manual ecoMAX 646 20
5.2.2 Checking the connection pressure (gas flow
pressure)
To check the connection pressure, proceed as follows
(cf. fig. 5.3):
• Take the front casing off the appliance.
• Close the appliance‘s gas stop cock.
• Unscrew the seal plug (1) marked “in” on the gas fit-
ting.
• Connect a digital pressure gauge or U-pipe pressure
gauge (2).
• Open the appliance‘s gas stop cock.
• Start up the appliance.
• Measure the connection pressure against the atmos-
pheric pressure.
1
2
Fig. 5.3 Measuring the connection pressure
Caution!
Natural gas:
If the connection pressure lies outside the range
from 17 to 25 mbar, you mustn‘t make a setting
or start up the appliance.
Liquid gas:
If the connection pressure lies outside the range
from 47.5 to 57.5 mbar, you mustn‘t make a
setting or start up the appliance.
If the connection pressure lies within the permissible
range, proceed as follows:
• Put the appliance out of operation.
• Close the appliance‘s gas stop cock.
• Remove the pressure gauge and screw the seal plug (1)
back on.
• Open the appliance‘s gas stop cock.
• Check that the seal plug is fit tight.
• Put the front casing back on and start the appliance
up again.
If the connection pressure does not lie within the per-
missible range and you can‘t correct the error, notify the
gas supplier. Proceed as follows:
• Put the appliance out of operation.
• Close the appliance‘s gas stop cock.
• Remove the pressure gauge and screw the seal plug (1,
fig. 5.3) back on.
• Check that the seal plug is fit tight.
• Put the front casing back on.
Do not start up the appliance!
5.2.3 Checking the CO
2
content and adjusting it if
needed (air ratio setting)
• Take off the appliance casing.
• Activate test program P.1:
• Press “Mains ON” or press the reset key.
• Now press the “+” key until P.0 appears in the display
(approx. 5 s).
• Then press the “+” key once. The display shows P.1.
• The test program P.1 is started by pressing the “i” key.
The appliance then runs for 15 minutes at full power.
• Wait at least 5 minutes until the appliance reaches op-
erating temperature.
• Measure the CO2 content at the flue gas test nozzle
(3) (fig. 5.4). Compare the value measured with the
corresponding value in table 5.2.
• If a setting of the flue gas value is necessary, unscrew
the screw (4) and move the air intake pipe (5) forward
by 90°.
Do not remove the air intake pipe!
• If necessary, set the corresponding flue gas value
(table 5.2) by turning the screw (6).
Note!
Natural gas:
Adjust only in 1/8 of a full revolution increments
and wait about a minute after every adjustment
until the value becomes stable.
Liquid gas:
Adjust only in very small increments (approx.
1/16 of a full revolution) and wait about a
minute after every adjustment until the value
becomes stable.
5 Start-up