1,000 Btu/ft3 is determined by- |
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| WARNING |
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Corrected Input = 90,000 - (6,000 X .04) X (90,000 / 1,000) |
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Corrected Input = 90,000 - (240 X 90) |
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| POSSIBLE PROPERTY DAMAGE, PERSONAL INJURY OR DEATH MAY OCCUR IF | |||||||||||||||||||||
Corrected Input = 90,000 - 21,600 |
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| THE CORRECT CONVERSION KITS ARE NOT INSTALLED. THE APPROPRIATE KITS | ||||||||||||||||||||||
Corrected Input = 68,400 |
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| MUST BE APPLIED TO INSURE SAFE AND PROPER FURNACE OPERATION. ALL | ||||||||||||||||||||
Using the orifices sized as shown in the table for 6,000 feet (#45), | CONVERSIONS MUST BE PERFORMED BY A QUALIFIED INSTALLER OR SERVICE | |||||||||||||||||||||||||||
AGENCY. |
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a meter time of 52.6 seconds is measured. The actual firing rate |
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of the furnace is |
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| This unit | is | configured | for | natural gas. | The | appropriate | ||||||||||||
Input = 1,000 (heating value of the gas) X 3600 (constant) / 52.6 | manufacturer’s propane gas conversion kit, must be applied for | |||||||||||||||||||||||||||
(meter time for 1 ft3 of gas) |
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| propane gas installations. | Refer to the “Propane Gas and/or | |||||||||||||||||||
Input = 3,600,000 / 52.6 |
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| High Altitude Installations” section for details. |
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| Contact your distributor for a tabular listing of appropriate | ||||||||||||||||||||
Input = 68,400 Btu/h |
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| manufacturer’s kits for propane gas and/or high altitude installations. | |||||||||||||||||||
METER TIME IN MINUTES AND SECONDS FOR NORMAL INPUT | ||||||||||||||||||||||||||||
The indicated kits must be used to insure safe and proper furnace | ||||||||||||||||||||||||||||
| RATING OF FURNACES EQUIPPED FOR USE WITH NATURAL | operation. | All conversions must be performed by a qualified | |||||||||||||||||||||||||
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| GAS AT 0 - 2,000 FEET ALTITUDE |
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| installer, or service agency. |
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| GAS PIPING CONNECTIONS |
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| INPUT | METER | HEAT | HEAT | HEAT | HEAT |
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| SIZE | VALUE | VALUE | VALUE | VALUE |
| GENERAL |
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| Btu/hr | FT3 |
| 900 | 1,000 |
| 1040 | 1,100 |
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| MIN. SEC. | MIN.SEC | MIN. SEC. | MIN. SEC. |
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| CAUTION |
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| 40,000 | 1 | 1 | 21 | 1 | 30 | 1 | 33 | 1 | 39 |
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| 10 | 13 | 30 | 15 | 00 | 15 | 36 | 16 | 30 |
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| TO AVOID POSSIBLE UNSATISFACTORY OPERATION OR EQUIPMENT DAMAGE | |||||||||||||||
| 60,000 | 1 | 0 | 54 | 1 | 00 | 1 | 03 | 1 | 06 |
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| 10 | 9 | 00 | 10 | 10 | 10 | 24 | 11 | 00 |
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| DUE TO UNDERFIRING OF EQUIPMENT, USE THE PROPER SIZE OF | |||||||||||||||
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| NATURAL/PROPANE GAS PIPING NEEDED WHEN RUNNING PIPE FROM THE | ||||||||||||||||||||||||
| 80,000 | 1 | 0 | 41 | 0 | 45 | 0 | 47 | 0 | 50 |
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| METER/TANK TO THE FURNACE. |
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| 10 | 6 | 45 | 7 | 30 | 7 | 48 | 8 | 15 |
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| 100,000 | 1 | 0 | 32 | 0 | 36 | 0 | 37 | 0 | 40 |
| When sizing a trunk line, be sure to include all appliances which | ||||||||||||||||
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| 10 | 5 | 24 | 6 | 00 | 6 | 14 | 6 | 36 |
| will operate simultaneously when sizing a trunk line. |
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| 120,000 | 1 | 0 | 27 | 0 | 30 | 0 | 31 | 0 | 33 |
| The gas piping supplying the furnace must be properly sized based | ||||||||||||||||
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| 10 | 4 | 30 | 5 | 00 | 5 | 12 | 5 | 30 |
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| on the gas flow required, specific gravity of the gas, and length of | |||||||||||||||||||||||||
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In Canada, the series and rating plate input for the furnace apply | the run. The gas line installation must comply with local codes, or | |||||||||||||||||||||||||||
in their absence, with the latest edition of the National Fuel Gas | ||||||||||||||||||||||||||||
to installations up to 2,000 feet (610m) above sea level. Kit | Code, NFPA 54/ANSI Z223.1. |
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for natural and LP gases is required to convert furnaces from |
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elevations of 2,000 to 4,500 feet (610m to 1,370m). Canadian |
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| Natural Gas Capacity of Pipe |
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certification applies to the installations of up to 4,500 feet above |
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| In Cubic Feet of Gas Per Hour (CFH) |
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sea level. Installations above 4,500 feet are subject to acceptance |
| Length of |
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| Nominal Black Pipe Size |
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| Pipe in Feet | 1/2" |
| 3/4" |
| 1" |
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| 1 1/4" |
| 1 1/2" |
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by the local authorities having jurisdiction. |
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| 10 |
| 132 |
| 278 |
| 520 |
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| 1050 |
| 1600 |
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Do not derate the furnace by adjusting the manifold pressure to a |
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| 92 |
| 190 |
| 350 |
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| 730 |
| 1100 |
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| 30 |
| 73 |
| 152 |
| 285 |
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| 590 |
| 980 |
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lower pressure than specified on the furnace rating plate. The |
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| 40 |
| 63 |
| 130 |
| 245 |
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| 500 |
| 760 |
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combination of the lower air density and a lower manifold pressure |
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| 50 |
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| 115 |
| 215 |
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| 440 |
| 670 |
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will prohibit the burner orifice from drawing the proper amount of |
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| 60 |
| 50 |
| 105 |
| 195 |
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| 400 |
| 610 |
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air into the burner. | This may cause incomplete combustion, |
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| 46 |
| 96 |
| 180 |
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| 370 |
| 560 |
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flashback, and possible yellow tipping. |
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| 90 |
| 170 |
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| 350 |
| 530 |
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In some areas the gas supplier may artificially derate the gas in an |
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| 84 |
| 160 |
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| 490 |
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| 100 |
| 38 |
| 79 |
| 150 |
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| 305 |
| 460 |
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effort to compensate for the effects of altitude. If the gas is artificially | (Pressure 0.5 psig or less and pressure drop of 0.3" W.C.; Based on | ||||||
derated, the appropriate orifice size must be determined based | 0.60 Specific Gravity Gas) | ||||||
upon the BTU/ft3 content of the derated gas and the altitude. Refer | CFH = | BTUH Furnace Input | |||||
to the National Fuel Gas Code, NFPA 54/ANSI Z223.1, and |
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Heating Value of Gas (BTU/Cubic Foot) | |||||||
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information provided by the gas supplier to determine the proper | To connect the furnace to the building’s gas piping, the installer | ||||||
orifice size. |
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A different pressure switch may be required at high altitude | must supply a ground joint union, drip leg, manual shutoff valve, | ||||||
and line and fittings to connect to gas valve. In some cases, the | |||||||
regardless of the BTU/ft3 content of the fuel used. | Contact your | installer may also need to supply a transition piece from 1/2" pipe | |||||
distributor for a tabular listing of appropriate altitude ranges and | to a larger pipe size. | ||||||
corresponding manufacturer’s pressure switch kits. |
| The following stipulations apply when connecting gas piping. Refer | |||||
PROPANE GAS CONVERSION |
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| to Figure 16 for typical gas line connections to the furnace. | ||||||
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| • Use black iron or steel pipe and fittings for the building piping. | |||||
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| • | Use pipe joint compound on male threads only. Pipe joint | ||||
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| compound must be resistant to the action of the fuel used. | ||||
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| • | Use ground joint unions. | ||||
18 |
| 12/04 |