Checking For Contamination - Rinnai E32S Installation & Servicing Instructions Manual

13.1

Checking for contamination

Check point contamination
figure 9
In order to be able to check the boiler for contamination in the following running years
it is advisable to measure the maximum air displacement in the boiler when putting the
boiler into operation. This value can be different with each type of boiler.
In order to be able to measure this value follow the next procedure:
- Press the Central Heating and DHW buttons once to ensure that the boiler is OFF
and not firing.
- Press the MODE-key for 5 seconds.
- The diplay will show COdE followed by an arbitrary number;
- Select by means of the + or the - key the code C123;
- Press the Store-key to confirm the code (code blinks 1 x);
- Press the MODE-key until SERV is shown;
- Press the STEP-key until 2 is shown;
alternately 2 and OFF will be shown.
- Undo the upper measuring nipple on the gas valve open (fig. 9);
- Connect the hose of the digital pressure gauge to the upper measuring nipple of the
gas valve
- Press the + key until the maximum value is achieved;
The fan will function to its maximum revolutions (burner stays off)
- Measure the under pressure and write down this value.
At the next commissioning visit this value may drop 20% of its original value on the
moment of intallation. When this value is dropped more than 20% the boiler needs
maintanance.
- Press the - key until OFF is shown (keep key pressed)
With this the procedure is finished.
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