Crown Boiler Phantom X series, Installation And Operating Instructions Manual, Page: 133 / 136

133
Altitude Model Fuel Recommended CO
2
Range
Percentage Derate
(approx. per 1000 ft)
2,001 ft
to 4,500 ft
PHNTM399C
NG 8.6-9.2
2.3%
LP 9.4-10.2
PHNTM500C
NG 8.7-9.2
4.1%
LP 9.8-10.1
4,001 ft
to 6,000 ft
PHNTM399C
NG 8.6-9.2
2.3%
LP 9.4-10.2
PHNTM500C
NG 8.7-9.2
4.1%
LP 9.8-10.1
6,001 ft
to 7,800 ft
PHNTM399C
NG 8.6-9.2
2.2%
LP 9.4-10.0
PHNTM500C
NG 8.7-9.2 3.6%
LP No Application No Application
7,801 ft
to 10,100 ft
PHNTM399C
NG 8.6-9.2
2.2%
LP 9.4-9.8
PHNTM500C
NG 8.7-9.2 3.4%
LP No Application No Application
NOTE : De-rate’s per 1000 ft are approximate
**Based on minimum vent length**
Appendix A - Instructions for High Altitude Installations Above 2000 ft.
(continued)
Table S2: Phantom X Altitude Adjustments