Vaillant ecoMAX 646 Installation And Maintenance Manual - page 20
Installation and maintenance manual ecoMAX 646 / 0020020158_02
20
Caution!
After the filling process has finished
• Close the filling unit and remove the filling hose.
• Inspect all connections for leakage.
1
Fig. 5.1 Bleeding the appliance
5.1.3
Hot water side filling and bleeding
To fill the DHW primary circuit, proceed as described in
point 5.1.2.
• Restart the venting program (P.0).
5.1.4 Filling
the
siphon
1
Fig. 5.2 Filling the siphon
Danger!
If the device is operated with an empty conden-
sate siphon, there is the danger of poisoning
through escaping flue gases.
Therefore, it is mandatory to fill the siphon as
described below before start-up.
• Screw off the bottom (1) of the condensate siphon
(fig. 5.2).
• Fill the bottom about 3/4 full with water.
• Screw the bottom back on the condensate siphon.
5.2
Checking the gas setting
5.2.1 Factory
gas
setting
Caution!
Ensure the appliance is connected to the cor-
rect gas supply that it is intended to be used
on. It is important to check the gas rate and
check the CO
2
content in the flue gasses, as
part of the commissioning process.
The appliances are set ex works to the values listed in
table 5.1.
The appliance design corresponds to the gas family
available on site:
• Check the CO
2
percentage as described in chapter 5.2.3.
Note!
Please ask Vaillant customer service about the
gas conversion of the appliance.
• Check the CO
2
percentage as described in chapter 5.2.3.
Appliance type
ecoMAX 646
Appliance design
Natural gas H
Designation on the appliance badge
II
2H3P
Factory setting to Wobbe index Ws (in kWh/m
3
),
corresponding to 0 °C / 1013 mbar
15.0
Factory setting of the hot water output (in kW)
45
Factory setting of the heating output (in kW)
35
Table 5.1 Overview of factory gas settings
5.2.2 Gas inlet working pressure
Check the inlet pressure as described below:
• Remove the front case from the boiler.
• Close the gas shutoff valve fitted to the boiler.
• Loosen the sealing screw marked ”in” (1) on the gas
valve assembly (Fig. 5.3).
• Connect a digital or a U gauge (2).
• Open the gas shutoff valve fitted to the boiler.
• Put the boiler into service (refer to the Instructions
for Use supplied with the boiler).
• Check the U gauge reading and ensure the inlet gas
pressure is between the pressures detailed below.
5 Initial start up and commissioning