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Table 7: Oil nozzle capacity
All rates shown achieved with 120 PSIG pump pressure for Beckett and 140 PSIG pump pressure for
Riello.
* Based on #2 domestic heating fuel oil having heating value of 140,000 BTU per gallon.
** Based on thermal efficiency of 84%-85%.
Riello 2-stage burner specifications and applications (OH6 ONLY):
MODEL
PART
OH6 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.
OIL NOZZLE CAPACITY CHART
UNITS
NOZZLE SIZE
(GPH)
EQUIVALENT HEAT
INPUT RATE*
(BTU/HR)
EFFECTIVE HEATING
CAPACITY**
(BTU/HR)
Beckett Riello
OH6FA060D***
.50
.50
70,000
60,000
OH6FA072D***
.60
.60
85,000
73,000
OH6FA090D***
.75
.70
106,250
90,000
OH8FA101D***
.85
.75
119,000
101,000
OH8FA119D***
1.00
.85
140,000
119,000
OH8FA132D***
1.10
1.00
156,250
132,000