Thermal Solutions APEX APX425C - Appendix A Instructions for High Altitude Installations Above 2,000 ft. (continued); Apex Altitude Adjustment Table for Recommended CO2 Range and Derate

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APEX Installation, Operating, & Service Instructions
Altitude Model Fuel Recommended CO
2
Range
Percentage Derate
(approx. per 1,000 ft.)
2,001 ft.
to 4,500 ft.
APX425C
NG 8.6-9.2
2.3%
LP 9.4-10.2
APX525C
NG 8.7-9.2
4.1%
LP 9.8-10.1
APX625C
NG 8.6-9.2
0.0%
LP 9.4-9.9
APX725C
NG 8.2-8.7
1.7%
LP 9.2-9.7
APX825C
NG 8.2-9.1 1.2%
LP 9.4-10.0 0.0%
4,001 ft.
to 6,000 ft.
APX425C
NG 8.6-9.2
2.3%
LP 9.4-10.2
APX525C
NG 8.7-9.2
4.1%
LP 9.8-10.1
APX625C
NG 8.6-9.2
0.0%
LP 9.4-9.9
APX725C
NG 8.2-8.7
0.0%
LP 9.2-9.7
APX825C
NG 8.2-9.1 1.2%
LP 9.4-10.0 0.0%
6,001 ft.
to 7,800 ft.
APX425C
NG 8.6-9.2
2.2%
LP 9.4-10.0
APX525C
NG 8.7-9.2 3.6%
LP No Application No Application
APX625C
NG 8.6-9.2 0.7%
LP 9.4-9.7 1.2%
APX725C
NG 8.2-8.7
0.8%
LP 9.2-9.5
APX825C
NG No Application No Application
LP 9.4-9.8 1.4%
7,801 ft.
to 10,100 ft.
APX425C
NG 8.6-9.2
2.2%
LP 9.4-9.8
APX525C
NG 8.7-9.2 3.4%
LP No Application No Application
APX625C
NG 8.6-9.2
2.0%
LP 9.4-9.8
APX725C
NG 8.2-8.7 2.0%
LP No Application No Application
APX825C
NG No Application No Application
LP 9.4-9.7 2.8%
NOTE: De-rate’s per 1,000 ft. are approximate
**Based on minimum vent length**
Table A-4: Apex Altitude Adjustments
Appendix A Instructions for High Altitude Installations Above 2,000 ft.
(continued)