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Summary of Contents for Airstream 18
- Page 1 LTD Heater MODEL # LTD - 18 Owner's Manual MANUAL # PNEG-595...
- Page 2 _____ 15. Unit cycles hi to lo (hi-lo only) _____ 16. Mod valve holds temperature within 1 degree (mod units only). _____ 17. All decals and serial number tag _____ 18. Aesthetic appearance _____ 19. Manual Tester Signature___________________________________ Date_________________________ LTD HEATER CHECK LIST...
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Page 3: Table Of Contents
Standard Vane Axial Heater Operation...12 Standard Heater Operation...12 Hi-Lo Heater Operation...12 BTU's Per Gauge Pressure (PSI) Propane Models (Approximate)...13 BTU's Per Gauge Pressure (PSI) Natural Gas Models (Approximate)...14 Adjusting The Vaporizor...15 Standard Heater Troubleshooting Guide...16 Standard Heater Wiring...17 Wiring Schematic...18... -
Page 4: Warranty
THE GSI GROUP, INC. ("GSI") WARRANTS ALL PRODUCTS MANUFACTURED BY GSI TO BE FREE OF DEFECTS IN MATERIAL AND WORKMANSHIP UNDER NORMAL USAGE AND CONDITIONS FOR A PERIOD OF 12 MONTHS AFTER RETAIL SALE TO THE ORIGINAL END USER OF SUCH PRODUCTS. GSI'S ONLY OBLIGATION IS, AND PURCHASER'S SOLE REMEDY SHALL BE FOR GSI, TO REPAIR OR REPLACE, AT GSI'S OPTION AND EXPENSE, PRODUCTS THAT, IN GSI'S SOLE JUDGMENT, CON- TAIN A MATERIAL DEFECT DUE TO MATERIALS OR WORKMANSHIP. -
Page 5: Roof Warning, Operation & Safety
It is designed to give excellent performance and service for many years. This manual describes the op- eration of the GSI/Airstream LTD Heater. Many models are avail- able to accommodate low, medium or high temperature grain condi- tioning. -
Page 6: Safety Alert Decals
The GSI Group, Inc. recom- mends contacting your local power company, and having a represen- tative survey your installation so the wiring is compatible with their sys- tem, and adequate power is sup- plied to your unit. Safety decals should be read and understood by all people in the grain handling area. -
Page 7: Fuel Connection
LTD HEATER INSTALLATION PROPANE VAPOR MODELS 1. Propane vapor models are de- signed to run directly off of sup- ply tank or from a separate ex- ternal vaporizer. 2. Run proper size line (see speci- fications) to pipe train on heater. Have a qualified gas service person inspect installation to be sure everything is installed ac-... - Page 8 INSTALLING THE LTD HEATER WITH LTD MOUNTING BRACKETS THESE INSTRUCTIONS ARE FOR HEATER INSTALLATION ON FAN UNITS WITH 230V MOTORS. BE SURE POWER IS DISCONNECTED AND LOCKED OUT BEFORE INSTALLATION! FAILURE TO DO SO MAY CAUSE SERIOUS INJURY OR DEATH. 1.
- Page 9 4. Lift heater and align paired brackets as shown and insert bolts in corresponding slots as in table below. Be sure to place washer provided between tap and bracket. Tighten bolts snug but loose enough to slide heater in and out. Slot Fan HP Heater...
- Page 10 LTD HEATER INSTALLATION Note: The optimum distance the heater should stand away from the fan inlet has been experimently de- termined. If there are any ignition problems, or flame quality is not as desired, move heater in or out, cali- brating heater to actual field condi- tions.
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Page 11: Heater Electrical Installation
LTD HEATER INSTALLATION LTD HEATER ELECTRICAL INSTALLATION (230V FANS) 1. Connect power cord to fan con- trol box. 2. Make field connections of wires in fan box as shown in Figure IMPORTANT! HEATER MUST BE INTERLOCKED WITH FAN FOR SAFE OPERATION. 3. - Page 12 LTD HEATER INSTALLATION LTD HEATER ELECTRICAL INSTALLATION (460V FANS) 1. Connect power cord to fan con- trol box. 2. Make field connections of wires in fan box as shown in Figure 2. 110V power supply or .5KVA 460V to 110V trans- former must be used to supply power for heater.
- Page 13 LTD HEATER INSTALLATION AIRSTREAM SURFACE MOUNT HUMIDISTAT (EDS SYSTEMS ONLY) 1. The humidistat can be used to directly control the operation of a heater for drying, or with addi- tional equipment, the operation of a fan for aeration. 2. The humidistat closes on a humidity rise.
- Page 14 LTD HEATER INSTALLATION SURFACE MOUNT HUMIDISTAT (AS A HEATER CONTROL) REDRAW BOTH HUMIDISTAT AND THERMOSTAT MUST BE CLOSED FOR HEATER OPERATION REDRAW...
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Page 15: Temperature Heater Specifications
Minimum operating pressure Maximum operating pressure Minimum line size Natural gas Maximum fuel flow (CFH) models Orifice Modulating valve bypass orifice Minimum operating pressure Maximum operating pressure Minimum line size 18" 18.5/16" 19.7/16" 22" 400000 5/64" 3/8" 9/64" Yellow 1/2"... -
Page 16: Btu's Per Gauge Pressure (Psi) Propane Models (Approximate)
ON by toggling the ON/OFF switch to ON position. BTU'S PER GAUGE PRESSURE (PSI) PROPANE MODELS (APPROXIMATE) Diameter 102900 145970 181870 18" BTU'S PER GAUGE PRESSURE (PSI) NATURAL GAS MODELS (APPROXIMATE) Diameter 18" 144100 205200 LTD HEATER OPERATION 4. For prolonged shutdown close the... - Page 17 MODULATING VALVE OPERATION Your LTD heater is equipped with a modulating valve. The following material should be read thor- oughly. 1. The modulating valve regulates gas flow through heater based on sensing unit in the plenum, and maintains a constant drying air temperature.
- Page 18 (Values calcu- lated from the Henderson-Thomp- son equation.) 14.8 16.8 19.1 14.5 16.4 18.7 14.2 16.0 18.3 13.9 15.7 17.9 13.6 15.4 17.5 13.3 15.1...
- Page 19 12.8 14.1 15.6 12.8 14.0 15.5 12.7 13.9 15.4 12.6 13.8 15.3 12.5 13.8 15.2 12.4 13.7 15.1 13.2 15.6 18.7 12.7 15.1 18.0 12.2 14.5 17.4 11.8 14.1 16.8 16.3 11.4 13.6 11.1 13.2 15.8 10.7 12.8 15.4 10.4 12.5...
- Page 20 13.9 15.3 12.5 13.7 15.2 12.4 13.6 15.0 12.3 13.4 14.8 12.1 13.3 14.7 12.0 13.2 14.5 11.9 13.0 14.4 11.8 12.9 14.3 11.7 12.8 14.1 18.3 18.1 17.9 17.6 17.4 17.2 17.0 16.9 16.7 16.5 16.4 16.2 16.1 15.9...
- Page 21 LTD HEATER WIRING DIAGRAM...
- Page 22 HH-4416 Drum Grill Guard (LTD) HH-4421 Stand-Off Bracket (LTD) F-953 18" Grill Guard (LTD) HH-1650 Spark Plug HF-1810 Spark Plug Nut HF-7260 18-28" Heater Spark Plug Wire HF-7262 18-28" Heater Flame Probe Wire THH-4179 Flame Sensor CD-0187 Flame Sensor Bracket...
- Page 23 HH-1083 CD-0149 HF-7085 HH-2653 Description 1/2" regulator 1/2" x 2-1/2" nipple 1/2" solenoid 1/2" x 1-1/2" nipple 1/4" gauge 30PSI 1/2" x 1/4" x 1/2" tee 18/24/28" Orifice pipe 5/64" Orifice plug (propane) 9/64" Orifice plug (natural gas) Modulating valve...
- Page 24 CONTROL BOX PARTS Part Number Description Control Box Lid F-942 HH-1487 Ignition Transformer Deluxe Control Board HF-7318 HH-1092 Housing Hi-Limit Latch FH-4429-1 Snap Track HF-7211 HF-7046 18" Control Box Housing Control Box Decal DC-1166 TFH-2021 110V Red Light Toggle Switch HH-1442...
- Page 26 I R S T R E A M R A I N O N D I T I O N I N G Y S T E M S 1004 E. Illinois St. Assumption, IL 62510 phone 217-226-4421 fax 217-226-4498 October 1997...