LTD Heater MODEL # LTD - 18 Owner's Manual MANUAL # PNEG-595 1
LTD HEATER CHECK LIST 9OK _____ 1. All wire connections _____ 2. Electrical connection visual inspection and fastener tightness _____ 3. Spark plug gap .125 _____ 4. Pipe train tightness and gas leaks _____ 5. Flame sensor tight _____ 6. Fuse in place, extra fuse provided _____ 7. Time delay reset _____ 8. Indicator light _____ 9. Pressure gauge _____ 10. Regulator adjusted _____ 11. Shut off valve operates correctly _____ 12. Vapor high limit _____ 13. Unit cycles on to off _____ 14.
LTD HEATER OPERATING INSTRUCTIONS TABLE OF CONTENTS Warranty.......................................................................................................................4 Roof Warning, Operation & Safety...............................................................................5 Safety Alert Decals.......................................................................................................6 Standard Vane Axial Heater Installation......................................................
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, CONTAIN A MATERIAL DEFECT DUE TO MATERIALS OR WORKMANSHIP.
ROOF WARNING, OPERATION & SAFETY ROOF DAMAGE WARNING AND DISCLAIMER GSI DOES NOT WARRANT ANY ROOF DAMAGE CAUSED BY EXCESSIVE VACUUM OR INTERNAL PRESSURE FROM FANS OR OTHER AIR MOVING SYSTEMS. ADEQUATE VENTILATION AND/OR "MAKEUP AIR" DEVICES SHOULD BE PROVIDED FOR ALL POWERED AIR HANDLING SYSTEMS. GSI DOES NOT RECOMMEND THE USE OF DOWNWARD FLOW SYSTEMS (SUCTION). SEVERE ROOF DAMAGE CAN RESULT FROM ANY BLOCKAGE OF AIR PASSAGES.
SAFETY ALERT DECALS The GSI Group, Inc. recommends contacting your local power company, and having a representative survey your installation so the wiring is compatible with their system, and adequate power is supplied to your unit. Safety decals should be read and understood by all people in the grain handling area. The rotating blade, fire warning decals and voltage danger decal must be displayed on the fan/heater can.
LTD HEATER INSTALLATION FUEL CONNECTION Important! Do not use propane tanks which have previously been used for ammonia unless they have been purged according to procedures of the National L. P. Association. Be sure fuel supply system complies with all local codes for L. P. gas installations. PROPANE VAPOR MODELS 3. After installation is complete 2. Run proper size line (see speci- check all connections for leaks. fications) to pipe train on heater.
LTD HEATER INSTALLATION 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 IMPORTANT! on Note: Heater Directi OUT BEFORE INSTALLATION! FAILURE TO DO SO MAY CAUSE SERIOUS INJURY OR DEATH. Figure 1: Make sure the LTD Heater is positioned in the right direction. 1. Place heater on the ground next to the inlet of the centrifugal fan. The LTD heater is designed to mount upwind.
LTD HEATER INSTALLATION 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 Fan 5 Middle Middle 7.5 End Middle 10 End Middle 15 End End 20 End End 25 End End Figure 4: Heater aligned with paired brackets and bolts inserted. 5. Align mating bracket pairs so that they are in a straight line.
LTD HEATER INSTALLATION Note: The optimum distance the 8. The LTD stand off bracket can heater should stand away from the increase the efficiency of the fan mounted, connect gas lines as fan inlet has been experimently de- and heater dramatically com- required per the installation re- termined. If there are any ignition pared to using an upwind quirements. problems, or flame quality is not as mounting plate.
LTD HEATER INSTALLATION LTD HEATER ELECTRICAL INSTALLATION (230V FANS) 1. Connect power cord to fan control box. IMPORTANT! HEATER MUST trol (optional) in heater box as BE INTERLOCKED WITH FAN shown in Figure 1. IMPOR- FOR SAFE OPERATION. TANT! THERMOSTAT MUST 2. Make field connections of wires in fan box as shown in Figure BE INSTALLED FOR SAFE 3. Connect deluxe thermostat con- OPERATION. 1. Figure 7: 230 volt fan control box.
LTD HEATER INSTALLATION LTD HEATER ELECTRICAL INSTALLATION (460V FANS) 1. Connect power cord to fan control box. or .5KVA 460V to 110V transformer must be used to trol (optional) as shown in Fig- supply power for heater. IM- ure 2. IMPORTANT! THERMO- PORTANT! HEATER MUST STAT MUST BE INSTALLED wires in fan box as shown in BE INTERLOCKED WITH FOR SAFE OPERATION. Figure 2. 110V power supply FAN FOR SAFE OPERATION. 2. Make field connections of Figure 8: 460 volt fan control box. 12 3.
LTD HEATER INSTALLATION AIRSTREAM SURFACE MOUNT HUMIDISTAT (EDS SYSTEMS ONLY) 1. The humidistat can be used to 3. The housing of the humidistat directly control the operation of has a perforated bottom allow- junction with a temperature a heater for drying, or with addi- ing air to surround the sens- sensing control device (thermo- tional equipment, the operation ing element. The perforated stat), which senses the drying of a fan for aeration. bottom insures accurate sens- air temperature.
LTD HEATER INSTALLATION SURFACE MOUNT HUMIDISTAT (AS A HEATER CONTROL) REDRAW BOTH HUMIDISTAT AND THERMOSTAT MUST BE CLOSED FOR HEATER OPERATION REDRAW 14
LTD HEATER INSTALLATION LOW TEMPERATURE HEATER SPECIFICATIONS 18" All models Inside diameter Bolt circle diameter Length BTU rating Weight 18.5/16" 19.
LTD HEATER OPERATION 1. Check to see if high limit con- 4. For prolonged shutdown close the trol is in the down position. 2. Open fuel valves between tank problems are: tank or supply valve and allow a. Humidistat and /or ther- flame to burn until all the gas is mostat is not set high out of the line (the flame dies out). enough. and heater. b. Pressure regulator is not 5. If any problems occur refer to 3. Turn the heater power switch to open. the service section of this c.
LTD HEATER OPERATION MODULATING VALVE OPERATION Your LTD heater is equipped with regulator, run the heater and turn tions as long as humidistat or a modulating valve. The following the modulating valve T-handle thermostat do not shut down the material should be read thor- in. This gets full line pressure to heater. A bypass orifice is used oughly. the burner.
LTD HEATER OPERATION The following tables are general not tell us how fast the grain will lose equilibrium with the drying air. The values for equilibrium moisture con- moisture to get to its equilibrium following tables should only be used tent. The equilibrium moisture con- moisture content.
LTD HEATER OPERATION EQUILIBRIUM MOISTURE TABLE FOR SORGHUM % WET BASIS Temp. degrees 10 20 30 Relative Humidity (percent) 60 50 40 35 40 45 50 55 60 65 70 75 80 85 90 95 100 6.2 6.1 6.1 6.0 6.0 5.9 5.9 5.8 5.8 5.7 5.7 5.7 5.6 5.6 8.2 8.1 8.1 8.0 7.9 7.9 7.8 7.7 7.7 7.6 7.6 7.5 7.5 7.4 9.8 9.7 9.6 9.5 9.4 9.4 9.3 9.2 9.1 9.1 9.0 8.9 8.9 8.8 11.1 11.0 10.9 10.8 10.7 10.7 10.6 10.5 10.4 10.3 10.3 10.2 10.1 10.1 12.4 12.3 12.2 12.1 12.0 11.9 11.8 11.7 11.6 11.5 11.5 11.4 11.3 11.2 13.7 13.5 13.4 13.
LTD HEATER OPERATION EQUILIBRIUM MOISTURE TABLE FOR WHEAT (SOFT) % WET BASIS Temp. degrees 10 20 30 Relative Humidity (percent) 60 50 40 35 40 45 50 55 60 65 70 75 80 85 90 95 100 6.3 6.2 6.1 6.0 5.9 5.9 5.8 5.7 5.7 5.6 5.5 5.5 5.4 5.4 8.3 8.1 8.0 7.9 7.8 7.7 7.6 7.5 7.4 7.4 7.3 7.2 7.1 7.1 9.8 9.6 9.5 9.4 9.2 9.1 9.0 8.9 8.8 8.7 8.6 8.5 8.4 8.4 11.1 10.9 10.8 10.6 10.5 10.4 10.2 10.1 10.0 9.9 9.8 9.7 9.6 9.5 20 12.3 12.1 12.0 11.8 11.7 11.5 11.4 11.3 11.1 11.0 10.9 10.8 10.7 10.6 13.5 13.3 13.
LTD HEATER WIRING DIAGRAM 21
LTD HEATER PARTS 18" GAS HEATER Key 1 2 3 4 5 6 7 8 9 10 11 12 13 14 NS NS NS 15 16 22 Part Number HF-6785 HH-3933 HH-4410 HF-7073 HF-6062-18 HF-7380 HF-7379 TFH-2046 HF-983 HF-978 HH-4416 HH-4421 F-953 HH-1650 HF-1810 HF-7260 HF-7262 THH-4179 CD-0187 Description 18" Heater Housing 18" Burner Casting 18" Lo-Temp Flame Spreader 18" Lo-Temp Flame Diverter 18" Access Panel Plastic View Window Access Panel Cover Plate Access Panel Latch 18/24" Burner Collector 18/24/26" Burner Collector Plate Drum Grill Guar
LTD HEATER PARTS AXIAL PROPANE VAPOR & NATURAL GAS PIPETRAIN Key 1 2 3 4 5 6 7 8 8 9 Part Number HH-1077 HH-3670 TFC-0032 HH-2029 HH-2984 S-3853 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 23
LTD HEATER PARTS CONTROL BOX PARTS Key 1 2 3 4 5 6 7 8 9 10 24 Part Number F-942 HH-1487 HF-7318 HH-1092 FH-4429-1 HF-7211 HF-7046 DC-1166 TFH-2021 HH-1442 Description Control Box Lid Ignition Transformer Deluxe Control Board Housing Hi-Limit Latch Snap Track 18" Control Box Housing Control Box Decal 110V Red Light Toggle Switch
AIRSTREAM GRAIN CONDITIONING SYSTEMS 1004 E. Illinois St.
