Installation & Servicing Instructions Rinnai E-Series
61
12.3 Checking the O
2
at full load (Step 1/3)
The O
2
percentage setting is required to be checked at commissioning,
maintenance and faults and adjusted if needed.
The O
2
percentage is required to be checked and adjusted after a conversion
from NG to LP or from LP to NG. This process must be done with a calibrated
combustion analyzer that has been set to the correct gas type.
The O
2
check consists of 2 steps or, if necessary, 3 steps:
Step 1:
Check on full load
Step 2:
Check on low load
Step 3:
Adjustment (if necessary).
Step 1: O
2
check on full load
The O
2
setting is preset at the factory, for all equipment units. A calibrated O
2
check
must be carried out during commissioning.
- Put the boiler into operation and take care that it can deliver its heat.
Set the full load
You can set the full load of the boiler as follows:
- Press the MODE-button for 5 seconds.
- The display will show COdE followed by an arbitrary number;
- Select by means of the
or the
button the code C123;
- Press the Store-button to confi rm the code (code blinks 1 x);
- Press the MODE-button until SERV is shown;
- Press the STEP-button once until 1 is shown;
alternately 1 and OFF will be shown.
- Calibrate the O
2
meter ;
- Place the probe of the O
2
meter into the check point (see fi g. 27);
- Press the
button until the maximum value (in kW) is achieved;
The boiler will burn on full load (value on display in kW)
value in BTU/hr = x3415
- Check whether the O
2
values that are listed below correspond to the measured
value.
After this setting has been made, once more test the O
2
value at low load (see Step
2 on page 62). If there are any changes in the result, then these must be corrected
(see Step 3 on page 63)
Choose the right O
2
value according the kind of gas (Natural Gas or Propane
Gas). Wrong adjustment may result causing property damage, personal injury
or death.
checkpoint O
2
fi gure 27
NOTICE
i
!
WARNING
O
2
check on full load (Step 1)
Full load
Natural Gas
Propane Gas
O
2
Nominal 4.7%
Nominal 5.1%
Minimum 3.6%, maximum 5.5%
Minimum 4.1%, maximum 5.8%
Values valid with closed air box.
NOTICE
i
a
