INSTALLATION
2000 Autoflow
Liquid Propane (LP)
Top Dry dryers have internal vapor- izers, and they are designed to oper- ate on liquid draw from the supply tank. Avoid using propane supply tanks that have been used for vapor draw for long periods of time. When using liquid draw systems any mois- ture that may be present in tanks or lines may freeze when the system is used in cold weather. To avoid this situation, purge the system with methanol. Do not use tanks which have previously been used for am- monia or fertilizer solutions. These substances are extremely corrosive and will damage fuel supply and burner parts. Because the vaporizer coil may need to be adjusted during operation flexible hose suitable for LPs should be used for the final field connection.
See the “Fuel Systems and Rec-
ommendations Chart” for liquid propane to determine the correct size line to run from the tank to the dryer. Have a qualified gas service per- son inspect the installation to be sure that everything is installed ac- cording to local codes and ordinances.
After installation is complete check all connections for leaks with liquid detergent or comparable. Wear rubber gloves and eye protection. Avoid contact with liquid propane. DO NOT USE FLAME FOR LEAK TESTING.
LP line field connection.
Fuel System Specifications and Recommendations
Liquid Propane (LP)
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| Maximum Heat | Maximum Fuel |
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| Minimum | Maximum |
Dryer | Dryer | Capacity BTU | Flow Gallons | Minimum | Orifice | Operating | Operating |
Fan Size | Horsepower | Per Hour | Per Hour | Line Size | Size | Pressure | Pressure |
36” | 3.5 million | 39 | 1/2” | 9/32” | 1 lb. | 15 lbs. | |
36” | 15 | 4.5 million | 50 | 1/2” | .265” | 1 lb. | 15 lbs. |
42” | 15 | 5.75 million | 64 | 1/2” | .344” | 1 lb. | 15 lbs. |
42” | 20 | 6.75 million | 75 | 1/2” | 3/8” | 1 lb. | 15 lbs. |
42” | 30 | 8.75 million | 97 | 1/2” | .328” | 1 lb. | 15 lbs. |
42” | 40 | 10.25 million | 113 | 3/4” | 29/64” | 1 lb. | 15 lbs. |
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