Filter
Top Products
19
Riello 2-stage burner specifications and applications:
MODEL
PART
OL6 2-STAGE
MTG. PLATE PART NO. 11700
MTG. PLATE GASKET
PART NO.
330212
**NOZZLE SIZE
.70x45° W / .50x45° W*
NOZZLE PART NO. 380702 / 380724*
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”.
* Optional equipment not shipped with burner.
** 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%.