Harman Stove Company 929BV manual Appendix B, De-rating for High Altitude, Propane

Appendix B

De-rating for High Altitude

For U.S. installations, the Clarity B-Vent is approved	For high altitude installations consult the local gas dis-
for elevations up to 2000 feet using the factory-installed	tributor or the authority having jurisdiction for proper rating
burner injectors. At elevations above 2000 feet, U.S. codes	methods.
require a decrease in the input rating by changing the burner	NOTE: The difference in altitude derating requirements
injectors to a smaller size. The chart below lists by part	for the U.S. and Canada is simply a result of differences in
numbers the appropriate injectors for both LP and natural	testing standards between the two countries.
gas at various altitudes.	If the installer must convert the unit to adjust for varying
For Canadian installations, the Clarity B-Vent is ap-	altitudes, an information sticker like the one below must be
proved for elevations up to 610 meters (2000 feet). For	filled out and affixed to the appliance at the time of conver-
installations from 610-1370 meters (2000-4500 ft.) the	sion.
orifice sizes (DMS) for natural and propane gas are as

shown in the chart below. natural gas

	front	Harman	Center	Harman	Rear	Harman	Nominal Btu
Altitude	Injector	Part No.	Injector	Part No.	Injector	Part No.	Input Rate
0-2000'	47	3-40-64347	56	3-40-57356	39	3-40-64739	40,000
2000-3000'	48	MALE	56	3-40-57356	40	MALE	38,400
3000-4000'	49	MALE	56	3-40-57356	41	MALE	36,900
4000-5000'	49	MALE	57	MALE	42	MALE	35,400
5000-6000'	50	MALE	57	MALE	42	MALE	34,000
6000-7000'	50	MALE	57	MALE	43	MALE	32,600
7000-8000'	51	MALE	58	MALE	43	MALE	31,300
8000-9000'	51	MALE	58	MALE	44	MALE	30,100

PROPANE

	front	Harman	Center	Harman	Rear	Harman	Nominal Btu
Altitude	Injector	Part No.	Injector	Part No.	Injector	Part No.	Input Rate
0-2000'	56	3-40-57356	71	3-40-57271	53	3-40-57753	40,000
2000-3000'	56	3-40-57356	71	3-40-57271	54	MALE	36,900
3000-4000'	56	3-40-57356	71	3-40-57271	54	MALE	36,900
4000-5000'	57	MALE	71	3-40-57271	54	MALE	35,400
5000-6000'	57	MALE	71	3-40-57271	55	MALE	32,600
6000-7000'	57	MALE	71	3-40-57271	55	MALE	32,600
7000-8000'	58	MALE	71	3-40-57271	56	3-40-57356	30,100
8000-9000'	58	MALE	71	3-40-57271	56	3-40-57356	30,100

●When ordering injectors that have no Harman Part number, specify MALE or FEMALE and the appropriate 2- digit number.

THE CONVERSION SHALL BE CARRIED OUT BY A MANUFACTURER'S AUTHORIZED REP- RESENTATIVE IN ACCORDANCE WITH THE REQUIREMENTS OF THE MANUFACTURER, PROVINCIAL OR TERRITORIALAUTHORITIES HAVING JURISDICTION AND IN ACCORDANCE WITH THE REQUIREMENTS OF THE CURRENT EDITION OF CAN/CGA-B141.1 OR CAN/CGA- B141.2 INSTALLATION CODES.

This appliance has been converted for use at an altitude of __________ft.

Orifice Sizes:	Front ________		Center_________ Rear ________
Input (Btu/hr)		_________________
Manifold Pressure		__________________
Fuel Type	_______________________
Converted By	_________________________________

Date of Conversion _______________________________

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