DATE PRINTED: 2/8/05 Revision Date: 04/15/04
OM-2205 Page 25
10,000 / Nat 39# / Prop 56#
9,000 / Nat 38# / Prop 55#
8,000 / Nat 38# / Prop 55#
7,000 / Nat 38# / Prop 55#
6,000 / Nat 37# / Prop 54#
5,000 / Nat 37# / Prop 54#
4,000 / Nat 37# / Prop 54#
3,000 / Nat 36# / Prop 53#
2,000 / Nat 36# / Prop 53#
1,000 / Nat 36# / Prop 53#
SEA LEVEL / Nat 36# / Prop 53#
APPENDIX ‘A’ (HIGH ALTITUDE CHART)
Equivalent Orifice Sizes at High Altitudes per the current edition of ANSI Z223.1 (Includes 4% input reduction for each 1,000 feet).
NATURAL GAS AND PROPANE ORIFICE
REQUIRED AT INCREASED ALTITUDE
THIS CHART IS BASED ON A CALORIFIC
VALUE OF 1000 BTU FOR NATURAL GAS
AND 2500 BTU FOR PROPANE
In Canada the appliance is certified for use with a number 36# (natural gas) & 53# (propane) orifice up to 4500 ft
Check with your local gas supplier for correct calorific value (BTU rating).