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All installations and services must be performed by qualified service personnel.
7
G. BURNER SPECIFICATIONS AND APPLICATIONS
RIELLO BURNER APPLICATION CHART
MODEL
PART
OH5 2 STAGE
MTG. PLATE
PART NO.
35750
MTG. PLATE
GASKET
PART NO.
330088
**NOZZLE
SIZE
.70 X 45° W
NOZZLE
PART NO.
380702
OIL PUMP
PRESSURE
130 LOW
170
HIGH
BURNER G-51
BURNER
PART NO.
380695
* INSULATOR S = SLEEVE OR N = NONE
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
(617) 749-8292
* Based on #2 domestic heating fuel oil having heating value of 140,000 BTU per gallon.
** Based on thermal efficiency of 84%-85%.
2 STAGE FIRING RATES
OH5-85DXE***
NOZZLE SIZE
Riello
INPUT RATE*
(BTU/HR)
EFFECTIVE**
HEATING
CAPACITY
HIGH FIRE 106,250/170psi 85,000
LOW FIRE .70 X 45° W 85,000/130psi 74,000