Checking The O - Rinnai E50CRN Installation & Servicing Instructions Manual

12.3 Checking the O

i
NOTICE
!
WARNING
a
checkpoint O fi gure 27
2
i
NOTICE
O check on full load (Step 1)
2
Full load
O
2
Values valid with closed air box.
at full load (Step 1/3)
2
The O percentage setting is required to be checked at commissioning,
2
maintenance and faults and adjusted if needed.
The O percentage is required to be checked and adjusted after a conversion
2
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 check consists of 2 steps or, if necessary, 3 steps:
2
Step 1: Check on full load
Step 2: Check on low load
Step 3: Adjustment (if necessary).
Step 1: O check on full load
2
The O setting is preset at the factory, for all equipment units. A calibrated O
2
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
- 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 meter ;
2
- Place the probe of the O
- Press the button until the maximum value (in kW) is achieved;
The boiler will burn on full load (value on display in kW)
- Check whether the O
value.
After this setting has been made, once more test the O
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
Gas). Wrong adjustment may result causing property damage, personal injury
or death.
Natural Gas
Nominal 4.7%
Minimum 3.6%, maximum 5.5%
or the button the code C123;
meter into the check point (see fi g. 27);
2
values that are listed below correspond to the measured
2
value according the kind of gas (Natural Gas or Propane
2
Minimum 4.1%, maximum 5.8%
2
value in BTU/hr = x3415
value at low load (see Step
2
Propane Gas
Nominal 5.1%
check
61