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Clocking the Meter (for Natural Gas only)

1. Turnoffallotherappliancesandpilots.

2. Turnontheapplianceandsettheappliancetohighfire.

3. Ensuretheappliancehasalargeloadtoheat,sothattheappliancewillnotshutoff.

4. WithaStop-Watch,recordthenumberofsecondsforthesmallestdialtomake1fullrevolution.

5. CFH=(3600xDialSize)/Seconds.

6. CFHx1000(checklocalBtucontent)=InputBtu’s.

 Note

For2PSImetersmultiplyCFHx1.097

ForMetricmetersmultiplyCFHx35.3

For2PSImetricmetersmultiplyCFHx1.097x35.3

ForAltitudeabove4,500'deduct2%per1,000’ofaltitudefromtheInputBtu’s.

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