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Riello 2-stage burner specifications and applications:
MODEL
PART
OD6 2-STAGE
MTG. PLATE
PART NO.
11700
MTG. PLATE
GASKET
PART NO.
330212
**NOZZLE SIZE
.70 X 45° W
NOZZLE
PART NO.
380702
OIL PUMP
PRESSURE
130 LOW
170 HIGH
BURNER G5D
BURNER
PART NO.
380529
Table 8: Riello burner application
THE NOZZLE SIZE GIVES THE NOMINAL FLOWRATE, IN GPH, FOLLOWED BY THE SPRAY ANGLE, IN
DEGREE’S, AND THE SPRAY PATTERN, EITHER “H” FOR HOLLOW CONE OR “S” FOR SOLID CONE.
FOR EXAMPLE, A NOZZLE RATED AT 0.65 GPH @ 100 PSIG THAT PROVIDES AN 80° SPRAY ANGLE
AND A HOLLOW SPRAY PATTERN WOULD BE ABBREVIATED IN THE TABLE AS “0.65 X 80°H”.
** NOTE: The reason the Riello burner nozzle sizes are smaller than the standard Thermo Pride burner nozzles
is that pre-set pump pressures are higher, therefore achieving the same firing rate with a smaller nozzle.
For more specific burner information, specifications or service information, reference the training manual enclosed
with each Riello burner or contact:
Riello Corporation of America,
5 Pond Park Road Hingham, Massachusetts 02043
Phone: (617) 749-8292
2 STAGE FIRING RATES
CAPACITY
FIRING
RATE
NOZZLE SIZE
Riello
INPUT RATE*
(BTU/HR)
EFFECTIVE**
HEATING
CAPACITY
HIGH FIRE 106,250/170psi 90,000
HIGH CAPACITY
LOW FIRE
.70 X 45° W
85,000/130psi 74,000
HIGH FIRE 85,000/170psi 74,000
LOW CAPACITY
LOW FIRE
.50 X 45° W
70,000/130psi 60,000
Table 9: Riello 2-stage firing rates
* Based on #2 domestic heating fuel oil having heating value of 140,000 BTU per gallon.
** Based on thermal efficiency of 84%-85%.