155
107774-01- 9/17
Table A3: Approximate Starting Number of Throttle Turns
Model Size
# Counter-clockwise Turns (From Fully Closed)
Natural Gas LP Gas
135 12-1/4 9
150 10 10
180 15 14
Appendix A - (continued)
Model No. Fuel
Approximate Derate per 1000 ft.
2001-6000 ft. 6001-7800 ft. 7801-10,100 ft.
K2WTC-135B
NG 1.2% 1.8% 2.4%
LP 1.7% 3.3% Not Permitted
K2WTC-150B
NG 2.6% 2.9% 3.1%
LP 3.2% 3.0% 3.3%
K2WTC-180B
NG
Not Permitted
LP
NOTE: THESE DERATES ARE AT MINIMUM VENT LENGTH Max. Vent Length 135 eq. Feet (3 inch Intake/
Vent Pipe)
Table A2: K2WTC Altitudes Derates
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