Typical Gas Piping for Upflow
Drip Leg and Union, Union* should be outside the | Gas | (Single Pipe) | |
cabinet. Manual |
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dripleg, union, | Manual shut- off |
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| valve |
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Useelbows and3" pipenippleto connectvalveto pipingwhen usingright side gas pipe entry.
LP Lowpressure
switch. Optional on some models.
nipp
* Union may be installed inside the cabinet when necessary because
Typical Gas Piping for Downflow
Use elbows and 3" pipe nipple to connect valve's- to piping when using left side gas pipe entry.
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| Manual shut- off |
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| LP | Low | pressure | valve | |
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| switch. | Optional | LP |
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| conversion. |
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| Drip Leg and Union, Union* should |
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| the | cabinet. | Manual | valve MUST | be | ||
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| upstream | of dripleg, | union, | and furnace. |
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| Gas | Pipe Grommet |
*Union | may | be installed | inside the | cabinet | when | necessary | (Single Pipe) | ||
because | of | clearances. |
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Natural Gas Input Rating Check | Example |
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Natural Gas | No. of Seconds | Time Per Cubic | BTUPer | |
NOTE: The gas meter can be used to measure input to furnace. |
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Rating is based on a natural gas BTU content of 1,000 BTU's per | PerHour3,600 | _ | Foot in48Seconds | 75,000Hour |
BTU1,000Content | ||||
cubic meter. Check with gas supplier for actual BTU content. |
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1.Make sure burner compartment door is in place before per- forming the following steps.
2.Turn OFF gas supply to all appliances and start furnace.
1,000 x 3,600 + 48 = 75,000 BTUH
3.Time how many seconds it takes the smallest dial on the gas meter to make one complete revolution. Refer to Ex- ample.
[_ | 440 01 111400 |
