![Vaillant ecoMAX 665 Скачать руководство пользователя страница 31](http://html.mh-extra.com/html/vaillant/ecomax-665/ecomax-665_installation-and-maintenance-manual_848645031.webp)
31
Installation and maintenance manual ecoMAX 665 / 0020020159_03
7.3
Draining the appliance and the system
7.3.1 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 con-
nection in order for the appliance to be completely
drained.
7.3.2 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‘ vents
and the draining cock again.
7.3.3 Cleaning the air separator
d
Danger!
There is danger of being injured or scalded at
all components carrying water. Only carry out
work on these components once they have
cooled down.
• Dismount the air separator as shown in fig. 7.6 and
rinse it with hot water.
• Remount the air separator and make sure to use new
seals (SP no. 981272).
1.
2.
3.
Fig. 7.6 Cleaning the air separator
7.4
Filling and venting the system
Proceed as described in point 5.1.2.
7.5
Checking the gas rate check
Perform a gas rate check as described in chapter 5.2.
7.6
Test operation
After the maintenance work has been completed, carry
out a functional test (see chapter 5.3).
Inspection and maintenance 7
Содержание ecoMAX 665
Страница 38: ...Benchmark gas boiler commissioning checklist ...
Страница 39: ......
Страница 40: ...0020020159_03GB 06 2007 ...