Vent Pipe Sizing Worksheet
Step 1 | Proposed vent pipe size : ______ | Equivalent Feet |
Step 2 | Termination kit catalog number : _____________ |
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| Vent pipe equivalency value from table 5 : ______ |
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Step 3 | Total number of 90° elbows required (indoors and outdoors) |
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| ______ X 5 = ______ equivalent feet of pipe |
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Step 4 | Total number of 45° elbows required (indoors and outdoors) |
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| ______ X 2.5 = ______ equivalent feet of pipe |
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Step 5 | Linear feet of straight pipe required : ______ |
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Step 6 | Add equivalent feet of vent pipe listed in | TOTAL |
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steps 2 through 5. |
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If the total is equal to, or less than, the allowable maximum given in table 6, the proposed pipe size is acceptable. If the total exceeds the maximum allowed vent pipe length, repeat the process above using the next larger diameter pipe until an acceptable total is achieved.
NOTE − In Direct Vent systems, total the equivalent length of either the exhaust OR intake piping run, depending upon which will be LONGER. Intake and exhaust pipe diameter must be the same size and must be terminated in the same pressure zone. Intake and exhaust pipe should be roughly the same length.
G61MP Start−Up & Performance Check List
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Job Location |
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Installer |
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Unit Model No. |
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Serial No. |
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Heating Section
Electrical Connections Tight? |
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| Blower Motor H.P. |
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Line Voltage |
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Blower Motor Amps |
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| Gas Piping Connections |
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| Tight & Leak−Tested? |
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Fuel Type: Natural Gas? |
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| LP/Propane Gas? |
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Furnace Btu Input (High fire) |
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| Line Pressure |
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Low Fire Manifold Pressure |
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| w.c. − Nat.: |
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| w.c. − LP/Propane |
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High Fire Manifold Pressure |
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| w.c. − LP/Propane |
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| Proper Draft? |
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Flue Connections Tight? |
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Combustion Gas Tested (high fire and low fire)? |
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| CO2 |
| CO |
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Blower ON delay confirmed? |
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| External Static Pressure? |
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(45 Seconds Fixed On) |
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| (0.5 maximum) |
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Blower OFF Delay Setting (60, 90, 120 or 180)? |
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| Temperature Rise |
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Filter Clean & Secure? |
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Thermostat |
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Heat Anticipator Setting? |
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| Thermostat Level? |
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Page 63
