HP Hickory Rotis N/45WDG, Hickory Rotis 45WDG PLUS manual Natural Gas Flow Table

			Hickory Industries, Inc.
1.7	Natural Gas Flow Table
			Gas Flow
	Gas	Heating Value in	per Burner (40,000 BTU)
		BTU/ft³	in ft3/hr
			High Flame Setting
	Natural	1040	57.75
	Propane	2500	24.00
	Butane	2500	24.00

1.7.1Volumetric Method to Verify the High Flame Setting, Mathematical

WARNING! No other gas equipment can be in operation during this procedure. Calculation of flow rate E in ft3/hour

E =	FP
	Hi

E = Flow rate in ft3/minute

FP = High Flame Power setting in BTU/hr

Hi= Heating value in BTU/ft3

Thus, for natural gas:

E = 60,000	BTU/hr	=	57.75 ft3/hr	=	0.96 ft3/min.
1040	BTU/ft3

E = 0.96 ft3/min.

Calculation of the natural gas needed in 1 hour by a 45WDG (3 burners) at full power:

57.75 * 3 = 173.25 ft3/hr = 2.89 ft3/min.

The time and the flow measurements should be taken at the gas (flow) meter with a chronometer (stop watch).

To run the test, open the manual gas cock valve, start up the unit according to the start-up instructions on page 24 and set the manifold valves to the high flame setting ("on" position).

Allow the unit to pre-heat (burn) for 10 to 15 minutes. Verify that the flow rate is calibrated to the appropriate flow rate indicated in the table.

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