Thermo Products OH5-85DXE operation manual Stage Firing Rates

All installations and services must be performed by qualified service personnel.

G. BURNER SPECIFICATIONS AND APPLICATIONS

RIELLO BURNER APPLICATION CHART

MODEL	OH5 2 STAGE
PART
MTG. PLATE	35750
PART NO.
MTG. PLATE
GASKET	330088
PART NO.
**NOZZLE	.70 X 45° W
SIZE
NOZZLE	380702
PART NO.
OIL PUMP	130 LOW
	170
PRESSURE
	HIGH
BURNER	G-51
BURNER	380695
PART NO.

* 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

2 STAGE FIRING RATES

	NOZZLE SIZE	INPUT RATE*	EFFECTIVE**
OH5-85DXE***			HEATING
	Riello	(BTU/HR)	CAPACITY
HIGH FIRE		106,250/170psi	85,000
LOW FIRE	.70 X 45° W	85,000/130psi	74,000

*Based on #2 domestic heating fuel oil having heating value of 140,000 BTU per gallon.

**Based on thermal efficiency of 84%-85%.

7