85-03-00955
P a g e
|
28
GAS INPUT RATE VERICATION REQUIREMENTS
For Natural Gas
1. Verify Main Orifice Size. The main orifice body has the orifice hole size stamped on it. NG orifice size shall be 33" for
0-2000 feet elevation and #34 for elevations exceeding 2000 feet.
2. Verify that the Manifold Gas Pressure is within 3.5" WC +/- 1/8":
3. Turn OFF all other appliances and their pilot flame in the home.
4. Read the main home gas supply meter reading.
Write the initial reading here >>
Initial Gas Meter Reading
_______________
5. Run this appliance for a period of 30 minutes on maximum flame size. Then turn off the main burner and pilot flame.
6. Read the main home gas supply meter reading after the 30 minutes of burn time.
Write the reading here >>
Final Gas Meter Reading
_______________
7. Subtract Initial Gas Meter from Final Gas Meter Reading.
Write the result here >> _____________________
8. Multiply the result is step 7 by 100,000.
Write the result here >> _____________________
9. Multiply the result in step 8 by 2.
Write the result here >> _____________________
The result in step 9 shall be at least maximum Input Rate (34,250 Btu) for altitudes below 2000 Feet. For altitudes higher
than 2000 feet, the result in step 9 shall be at least 32,500 Btu.
For LPG
1. Verify Main Orifice Size. The main orifice body has the orifice hole size stamped on it. LPG orifice size shall be #50 for
0-2000 feet elevation and #51 for elevations exceeding 2000 feet.
2. Verify that the Manifold Gas Pressure is within 10" WC +/- 1/8".
3. Follow Steps 3 – 9 above.
The result in step 9 shall be at least maximum Input Rate (34,250 Btu) for altitudes below 2000 Feet. For altitudes higher
than 2000 feet, the result in step 9 shall be at least 33,800 Btu.