Thermo Products OH6FX072DV4 Stage Firing Rates Capacity Nozzle Size Input Rate Effective

Riello 2-stage burner specifications and applications:

MODEL	OD6 2-STAGE
PART
MTG. PLATE	11700
PART NO.
MTG. PLATE
GASKET	330212
PART NO.
**NOZZLE SIZE	.70 X 45° W
NOZZLE	380702
PART NO.
OIL PUMP	130 LOW
PRESSURE	170 HIGH
BURNER	G5D
BURNER	380529
PART NO.

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	NOZZLE SIZE	INPUT RATE*	EFFECTIVE**
	RATE	Riello	(BTU/HR)	HEATING
				CAPACITY
HIGH CAPACITY	HIGH FIRE	.70 X 45° W	106,250/170psi	90,000
	LOW FIRE		85,000/130psi	74,000
LOW CAPACITY	HIGH FIRE	.50 X 45° W	85,000/170psi	74,000
	LOW FIRE		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%.

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