Vaillant ecoMAX 646, Руководство по установке и обслуживанию

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Installation and maintenance manual ecoMAX 646 28
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Fig. 7.5 Cleaning the condensate paths
7.3 Checking the gas setting
Perform a gas setting check as described in chapter 5.2.
7.4 Filling and bleeding the system
Proceed as described in points 5.1.2 and 5.1.3.
7.5 Draining the appliance and the system
7.5.1 Draining the appliance
• Close the appliance‘s maintenance cocks.
• Open the drain valve in the return.
• Open the air-release valve on the cylinder supply in
order for the appliance to be completely drained.
7.5.2 Draining the entire system
• Attach a hose to the system‘s drain point.
• Bring the open end of the hose to a suitable discharge
point.
• Make sure that the boiler‘s maintenance cocks are
open.
• Open the draining cock.
• Open the air-release valves on the radiators. Start with
the radiator that is highest up and then continue
downward.
• When the water has run out, close the radiators‘ ex-
hausts and the draining cock again.
7.5.3 Cleaning the air barrel
Danger!
There is
danger of being injured or scalded at all compo-
nents carrying water. Only carry out work on
these components once they have cooled down.
• Dismount the air barrel as shown in fig. 7.6 and rinse it
with hot water.
• Remount the air barrel and make sure to use new
seals (SP no. 981272).
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Fig. 7.6 Cleaning the air barrel
7.6 Test operation
After the maintenance work has been completed, carry
out a functional test (see chapter 5.3).
7 Inspection and maintenance