DeDietrich EMC-M 30/35 MI Service Manual download pdf (Page 54)

7.2.5. Checking the transfer capacity

If tap capacity falls significantly (due to insufficient temperature and/

or flow rate), clean the plate heat exchanger (hot water side) and the

tap water cartridge:

¼See chapter: "Cleaning the plate exchanger", page 56.

7.2.6. Checking the flue gas discharge and the air

supply

Check the tightness of the flue gases evacuation and air inlet

connections.

7.2.7. Checking combustion

Measure the O

/ CO

contents and the temperature of the flue gases

at the flue gas measuring point. To do this, proceed as follows:

4 Heat the water in the boiler to a temperature of approx. 70 °C.

4 Unscrew the plug of the flue gas measurement point.

4 Measure the smoke content in O

/ CO

using the measuring

equipment. Compare this with the control value.

¼See following chapters:

"Setting the air/gas ratio (Full load)", page 41

"Setting the air/gas ratio (Part load)", page 42

7.2.8. Checking the automatic air vent

1. Check that the automatic bleed is working (This is visible on the

right on top of the boiler).

2. The air vent can be closed off with the cap that can be found next

to it.

3. If any leaks are detected, replace the air vent.

R000406-A

T003127-B

R000350-A

7. Checking and maintenance

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DeDietrich EMC-M 30/35 MI Service Manual Page 54