Rinnai E75CN - Manual (Page 60)

Installation & Servicing Instructions Rinnai E-Series
60
Visual inspection of the flame
The burner must flame evenly over the entire surface when operating correctly. The
flame must burn with a clear, blue, stable flame.
Check the flame through the inspection glass in the ignition probe (fig. 33).
The flame pattern should be as shown in the figures below.
SATISFACTORY
Ignition probe
blue flame
UNSATISFACTORY
Ignition probe
yellow flame
Further checks:
- Inspect the pressure relief valve
- Clean the water filter in the return pipe
- Check the pH of the water or glycol/water mixture.
Verify proper operation after servicing.
13.4 Warranty
For warranty conditions refer to the warranty card supplied with the boiler.
Inspection glass figure 33