Fondital Antea 24kW Range, Руководство по установке, использованию и обслуживанию

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8.16. Pressure relief valve
• Access behind the control panel as described in 7.2 and drain the boiler heating circuit
• Disconnect the pressure relief valve outlet pipe
• Extract the retaining clip and lift the valve out of the pump housing
• Replace with the new valve and reassemble in reverse order
• Refill and pressurize the system
8.17. DHW heat exchanger (fig. 30)
• Access behind the front panel as described in 7.2 and drain both heating and DHW circuits
• Remove the condensate trap, as described in 8.20 to gain more space for extracting the heat exchanger
• Unscrew the two socket head capscrews holding the DHW heat exchanger with a 4 mm Allen key
• Rotate the heat exchanger counterclockwise and extract it from the lower part of the boiler. Be careful not to allow water to drip on any electrical
component
• Reassemble with a new heat exchanger in reverse order
• Refill and pressurise the system
8.18. Three-way valve cartridge
• Access behind the control panel, as described in 7.2, and drain the heating circuit
• Remove the three way valve motor, as described in 8.8
• Unscrew the two screws holding the cartridge and remove it, taking care non to drip water onto any electrical component
• Insert the new cartridge in place and reassemble in reverse order
• Refill and pressurize the system
8.19. Expansion vessel (fig. 28)
Note: check the pressure of the new vessel, which must be about 1 bar, before installing it. If necessary, pressurize it.
• Access the room sealed chamber, as described in 7.2, and drain the heating circuit
• Disconnect the pipe from the bottom of the expansion vessel
• Unscrew the two screws holding the top support bracket
• Extract the expansion vessel from the boiler and replace it
• Reassemble in reverse order
• Refill and pressurize the system
8.20. Condensate trap (fig. 30)
• Access the room sealed chamber as described in 7.2
• Place a container under the boiler and remove the condensate trap cap, in order to empty the condensate trap
• Disconnect the top and drain connections of the condensate trap
• Unscrew the threaded washer holding the condensate trap to the bottom of the sealed chamber, and remove the condensate trap
• Fit the new trap and assemble in reverse order
Note: fill the new trap with water once installed and before operating the boiler