Airstream 18 User's Manual
Contents
1. 9 11 Transition Hi Limit 11 Standard Vane Axial Heater Operation sss 12 Standard Heater Op ration Et pa ete 12 Hi Lo Heater 12 BTU s Per Gauge Pressure PSI Propane Models Approximate 13 BTU s Per Gauge Pressure PSI Natural Gas Models 14 Adjusting The VaporizOr 15 Standard Heater Troubleshooting 16 Standard Heater WinMe E T A aie 17 Wiring Schematic reaa ae iaaa AEEA AAE AEA A RAA 18 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 ALL DELIVERY AND SHIPMENT CHARGES TO AND FROM GSI S FACTORY WILL BE PURCHASER S RESPONSIBILITY EXPENSES INCURRED BY OR ON BEHALF OF THE PURCHASER WITHOUT PRIOR WRITTEN AUTHORIZATION FROM AN AUTHORIZED EMPLOYEE OF GSI SHALL BE THE SOLE RESPONSIBILITY OF THE PURCHASER EXCEPT FOR THE ABO2. Bad On Off Switch Replace Switch Heater Housing Hi Limit Reset Or Replace Hi Limit ao RO ad Transition Hi Limit Reset Or Replace Hi Limit Power To Heater Check Heater wd ad o0 Blown Fuse Replace Fuse Flame Sensor if flame present light on Clean Or Replace Flame Sensor eO RO aid Control Board Replace Control Board Air Switch if fan on light not on Check Air Switch o0 Vaporzor Hi Limit Adjust Vaporizor Coil Replace Vapor HFLimit Humidistat Thermostat Temperature Reached Replace Thermostat Humidistat w we B ao ag Spark Plug Clean Or Replace Spark Plug No Fuel To Burner Check Fuel Supply Bad Solenoid Replace Solenoid WAIT FOR 20 SECOND PURGE DELAY TO TROUBLESHOOT INDICATING LIGHTS SHOWN ON LEFT SHOULD BE LIT WHEN UNIT 1 OPERATING PROPERLY DC 1161 21 22 LTD HEATER PARTS 18 GAS HEATER erue 22 Pd 6 6 Key Part Number Description 1 HF 6785 18 Heater Housing 2 HH 3933 18 Burner Casting 3 HH 4410 18 Lo Temp Flame Spreader 4 HF 7073 18 Lo Temp Flame Diverter 5 HF 6062 18 18 Access Panel 6 HF 7380 Plastic View Window 7 7379 Access Panel Cover Plate 8 TFH 2046 Access Panel Latch 9 HF 983 18
3. 5 The humidistat is used in con junction with a temperature sensing control device thermo stat which senses the drying air temperature If the plenum air temperature exceeds the setting of the thermostat the thermostat opens and the heater shuts off When the plenum temperature drops below the setting of the thermostat the thermostat closes and the heater turns on again The thermostat is a safety device keeping the grain tem perature equal to the thermostat setting Some grains are more sensitive to temperature Qual ity germination and value are lost due to high temperatures Grains used for seed rice and popcorn are adversely effected by high temperatures LTD HEATER INSTALLATION SURFACE MOUNT HUMIDISTAT AS A HEATER CONTROL REDRAW BOTH HUMIDISTAT AND THERMOSTAT MUST BE CLOSED FOR HEATER OPERATION REDRAW LTD HEATER INSTALLATION LOW TEMPERATURE HEATER SPECIFICATIONS Minimum line size 18 All models Inside diameter 18 5 16 Bolt circle diameter 19 7 16 Length 22 BTU rating 400000 Weight 81 Vapor models Maximum fuel flow GPH 167 Orifice 5 64 Modulating valve bypass orifice Red Minimum operating pressure 2 Maximum operating pressure 20 Minimum line size 3 8 Natural gas Maximum fuel flow CFH 421 models Orifice 9 64 Modulating valve bypass orifice Yellow Minimum operating pressure 1 Maximum operating pressure 7 1 2 LTD HEATER OPERATION 1 Check to see if h
4. 9 5 11 0 12 6 14 3 16 3 19 1 80 4 2 6 2 7 8 9 3 10 8 12 4 14 0 16 0 18 8 85 4 2 6 1 7 7 9 2 10 6 12 1 13 8 15 8 18 5 90 4 1 6 0 7 6 9 0 10 5 12 0 13 6 15 5 18 2 95 4 0 5 9 7 4 8 9 10 3 11 8 13 4 15 3 17 9 100 3 9 5 8 7 3 8 7 10 1 11 6 13 2 15 1 17 7 EQUILIBRIUM MOISTURE TABLE FOR ROUGH RICE WET BASIS Temp Relative Humidity percent degrees 10 20 30 40 50 60 70 80 90 35 6 3 8 3 9 9 11 3 12 6 13 9 15 3 16 9 19 1 40 6 1 8 2 9 7 11 1 12 4 13 7 15 1 16 6 18 8 45 6 0 8 0 9 6 10 9 12 2 13 4 14 8 16 4 18 5 50 5 9 7 9 9 4 10 7 12 0 13 2 14 6 16 1 18 2 55 5 8 7 7 9 2 10 5 11 8 13 0 14 3 15 9 17 9 60 5 7 7 6 9 1 10 4 11 6 12 8 14 1 15 6 17 7 65 5 6 7 5 9 0 10 2 11 4 12 6 13 9 15 4 17 4 70 5 6 7 4 8 8 10 1 11 3 12 5 13 7 15 2 17 2 75 5 5 7 3 8 7 9 9 11 1 12 3 13 5 15 0 17 0 80 5 4 7 2 8 6 9 8 11 0 12 1 13 4 14 8 16 8 85 5 3 7 1 8 5 9 7 10 8 12 0 13 2 14 6 16 6 90 5 3 7 0 8 4 9 6 10 7 11 8 13 1 14 5 16 4 95 5 2 6 9 8 3 9 4 10 6 11 7 12 9 14 3 16 2 100 5 1 6 8 8 2 9 3 10 4 11 6 12 8 14 1 16 0 18 LTD HEATER OPERATION EQUILIBRIUM MOISTURE TABLE FOR SORGHUM WET BASIS Temp Relative Humidity percent degrees 10 20 30 40 50 60 70 80 90 35 6 2 8 2 9 8 11 1 12 4 13 7 15 0 16 6 18 7 40 6 1 8 1 9 7 11 0 12 3 13 5 14 9 16 4 18 5 45 6 1 8 1 9 6 10 9 12 2 13 4 14 8 16 3 18 4 50 6 0 8 0 9 5 10 8 12 1 13 3 14 7 16 2 18 2 55 6 0 7 9 9 4 10 7 12 0 13 2 14 5 16 1 18 1 60 5 9 7 9 9 4 10 7 11 9 13 1 14 4 15 9 18 0 65 5 9 7 8 9 3 10 6 11
5. 24 Burner Collector 10 HF 978 18 24 26 Burner Collector Plate 11 HH 4416 Drum Grill Guard LTD 12 HH 4421 Stand Off Bracket LTD 13 F 953 18 Grill Guard LTD 14 HH 1650 Spark Plug NS HF 1810 Spark Plug Nut NS 7260 18 28 Heater Spark Plug Wire NS HF 7262 18 28 Heater Flame Probe Wire 15 THH 4179 Flame Sensor 16 CD 0187 Flame Sensor Bracket LTD HEATER PARTS AXIAL PROPANE VAPOR amp NATURAL GAS PIPETRAIN N Part Number Description 1 HH 1077 1 2 regulator 2 HH 3670 1 2 x 2 1 2 nipple 3 TFC 0032 1 2 solenoid 4 HH 2029 1 2 x 1 1 2 nipple 5 HH 2984 1 4 gauge 30PSI 6 5 3853 1 2 x 1 4 x 1 2 tee 7 HH 1083 18 24 28 Orifice pipe 8 CD 0149 5 64 Orifice plug propane 8 HF 7085 9 64 Orifice plug natural gas 9 HH 2653 Modulating valve 23 LTD HEATER PARTS CONTROL BOX PARTS Key Part Number Description 1 F 942 Control Box Lid 2 HH 1487 Ignition Transformer 3 HF 7318 Deluxe Control Board 4 HH 1092 Housing Hi Limit 5 FH 4429 1 Latch 6 HF 7211 Snap Track 7 HF 7046 18 Control Box Housing 8 DC 1166 Control Box Decal 9 TFH 2021 110V Red Light 10 HH 1442 Toggle Switch AIRSTREAM GRAIN CONDITIONING SYSTEMS MESTRE a division THE GSI GROUP 1004 E Illinois St Assumption IL 62510 phone 217 226 4421 fax 217 226 4498 October 1997
6. 8 13 0 14 3 15 8 17 9 70 5 8 7 7 9 2 10 5 11 7 12 9 14 2 15 7 17 7 75 5 8 7 7 9 1 10 4 11 6 12 8 14 1 15 6 17 6 80 5 7 7 6 9 1 10 3 11 5 12 8 14 0 15 5 17 5 85 5 7 7 6 9 0 10 3 11 5 12 7 13 9 15 4 17 4 90 5 7 7 5 8 9 10 2 11 4 12 6 13 8 15 3 17 3 95 5 6 7 5 8 9 10 1 11 3 12 5 13 8 15 2 17 2 100 5 6 7 4 8 8 10 1 11 2 12 4 13 7 15 1 17 1 EQUILIBRIUM MOISTURE TABLE FOR SOYBEANS WET BASIS Temp Relative Humidity percent degrees 10 20 30 40 50 60 70 80 90 35 3 0 5 1 7 1 9 0 11 0 13 2 15 6 18 7 23 0 40 2 9 4 9 6 8 8 6 10 6 12 7 15 1 18 0 22 2 45 2 8 4 7 6 5 8 3 10 2 12 2 14 5 17 4 21 5 50 2 7 4 5 6 3 8 0 9 8 11 8 14 1 16 8 20 8 55 2 6 4 4 6 1 7 7 9 5 11 4 13 6 16 3 20 2 60 2 5 4 2 5 9 7 5 9 2 11 1 13 2 15 8 19 7 65 2 4 4 1 5 7 7 3 8 9 10 7 12 8 15 4 19 1 70 2 3 4 0 5 5 7 0 8 7 10 4 12 5 15 0 18 6 75 2 3 3 8 5 3 6 8 8 4 10 1 12 1 14 6 18 2 80 2 2 3 7 5 2 6 7 8 2 9 9 11 8 14 2 17 7 85 2 1 3 6 5 1 6 5 8 0 9 6 11 5 13 9 17 3 90 2 1 3 5 4 9 6 3 7 8 9 4 11 2 13 5 16 9 95 2 0 3 5 4 8 6 2 7 6 9 2 11 0 13 2 16 5 100 2 0 3 4 4 7 6 0 7 4 8 9 10 7 12 9 16 2 LTD HEATER OPERATION EQUILIBRIUM MOISTURE TABLE FOR WHEAT SOFT WET BASIS Temp degrees 10 35 6 3 40 6 2 45 6 1 50 6 0 55 5 9 60 5 9 65 5 8 70 5 7 75 5 7 80 5 6 85 5 5 90 5 5 95 5 4 100 5 4 20 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 30 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 Relative H
7. CIDENT THIS WARRANTY COVERS ONLY PRODUCTS MANUFACTURED BY GSI THIS WARRANTY IS EXCLUSIVE AND IN LIEU OF ALL OTHER WARRANTIES EXPRESS OR IMPLIED GSI RESERVES THE RIGHT TO MAKE DESIGN OR SPECIFICATION CHANGES AT ANY TIME PRIOR TO INSTALLATION PURCHASER HAS THE RESPONSIBILITY TO RESEARCH AND COM PLY WITH ALL FEDERAL STATE AND LOCAL CODES WHICH MAY APPLY TO THE LOCATION AND INSTALLATION ROOF WARNING OPERATION amp SAFETY ROOF DAMAGE WARNING AND DISCLAIMER M that may cause roof vent icing A CAUTION Excessive vacuum or pressure may damage roof Use positive aeration system Make sure all roof vents are open unobstructed Start roof fans when supply fans are started Do not operate when conditions exist DC 969 GSI DOES NOT WARRANT ANY ROOF DAMAGE CAUSED BY EXCESSIVE VACUUM OR INTERNAL PRESSURE FROM FANS OR OTHER AIR MOVING SYSTEMS AD EQUATE VENTILATION AND OR MAKEUP AIR DEVICES SHOULD BE PROVIDED FOR ALL POWERED AIR HAN DLING SYSTEMS GSI DOES NOT RECOMMEND THE USE OF DOWNWARD FLOW SYSTEMS SUCTION SEVERE ROOF DAMAGE CAN RESULT FROM ANY BLOCKAGE OF AIR PASSAGES RUNNING FANS DURING HIGH HUMID ITY COLD WEATHER CONDITIONS CAN CAUSE AIR EX HAUST OR INTAKE PORTS TO FREEZE Thank you for choosing GSI Air stream product It is designed to give excellent performance and service for many years This manual describes the op eration of the GSl Airstream LTD Heater Many m
8. LTD Heater MODEL LTD 18 Owners Manual MANUAL PNEG 595 division of THE GSI GROUP ss LTD HEATER CHECK LIST v OK 1 All wire connections 2 Electrical connection visual inspection and fastener tightness Spark plug gap 125 Pipe train tightness and gas leaks Flame sensor tight 3 4 5 6 Fuse in place extra fuse provided 7T 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 Heatrise even across transition 15 Unit cycles hi to lo hi lo only 2222 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 OPERATING INSTRUCTIONS TABLE OF CONTENTS Warranty ioc bn e RR d dtm 4 Roof Warning Operation amp 5 safety Alert Decals irr mre n Sania poral 6 Standard Vane Axial Heater Installation ee 7 m M R 7 Heater Electrical emm 8 Second Heater Installation etitm 8 Temperature Heater 10 Plenum Thermostat
9. N 5 n 5 5 zm OPTIONAL LUX CONTRO Figure 7 230 volt fan control box 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 IM PORTANT HEATER MUST BE INTERLOCKED WITH FAN FOR SAFE OPERATION 3 Connect deluxe thermostat con trol optional as shown in Fig ure 2 IMPORTANT THERMO STAT MUST BE INSTALLED FOR SAFE OPERATION Ke N a ral Ne 2 GNITION TRANSFORMER IM RESET N Jj a 20 30 P 40 1RCU 50 T TOR BLACK WHITE N GREEN l T LIGH l ON OFF SWITC A f BOX 3 HEATER CONTR HEATER CONTRC 15 OV x 2 iz GREEN AND RED WIRES z FOR HI LO UNITS ONLY 15 EE RE ri lo Fg IZ 1 TIONAL _ ____ _ NO Ng m uns X SG US N P V DELUX YN D CONTROL Figure 8 460 volt fan control box 12 LTD HEATER INSTALLATION AIRSTREAM SURFACE MOUNT HUMIDISTAT EDS SYSTEMS ONLY The humidistat can be used to directly control the operation of a heater for d
10. VE STATED EXPRESS LIMITED WARRANTIES GSI MAKES NO WARRANTY OF ANY KIND EXPRESSED OR IMPLIED INCLUDING WITHOUT LIMITATION WARRANTIES OF MER CHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE OR USE IN CONNECTION WITH i PROD UCT MANUFACTURED OR SOLD BY GSI OR ii ANY ADVICE INSTRUCTION RECOMMENDATION OR SUGGESTION PROVIDED BY AN AGENT REPRESENTATIVE OR EMPLOYEE OF GSI REGARDING OR RELATED TO THE CONFIGURATION INSTALLATION LAYOUT SUITABILITY FOR A PARTICULAR PUR POSE OR DESIGN OF SUCH PRODUCT OR PRODUCTS INNO EVENT SHALL GSI BE LIABLE FOR ANY DIRECT INDIRECT INCIDENTAL OR CONSEQUEN TIAL DAMAGES INCLUDING WITHOUT LIMITATION LOSS OF ANTICIPATED PROFITS OR BENEFITS PURCHASER S SOLE AND EXCLUSIVE REMEDY SHALL BE LIMITED TO THAT STATED ABOVE WHICH SHALL NOT EXCEED THE AMOUNT PAID FOR THE PRODUCT PURCHASED THIS WARRANTY IS NOT TRANSFERABLE AND APPLIES ONLY TO THE ORIGINAL PURCHASER GSI SHALL HAVE OBLIGATION OR RESPONSIBILITY FOR ANY REPRESENTATIVE OR WARRANTIES MADE BY OR ON BEHALF OF ANY DEALER AGENT OR DISTRIBUTOR OF GSI GSI ASSUMES NO RESPONSIBILITY FOR FIELD MODIFICATIONS OR ERECTION DEFECTS WHICH CREATE STRUCTURAL OR STORAGE QUALITY PROBLEMS MODIFICATIONS TO THE PRODUCT NOT SPECIFICALLY COVERED BY THE CONTENTS OF THIS MANUAL WILL NULLIFY ANY PRODUCT WARRANTY THAT MIGHT HAVE BEEN OTHERWISE AVAILABLE THE FOREGOING WARRANTY SHALL NOT COVER PRODUCTS OR PARTS WHICH HAVE BEEN DAMAGED BY NEGLIGENT USE MISUSE ALTERATION OR AC
11. e above for other precautions LTD HEATER INSTALLATION INSTALLING THE LTD HEATER WITH LTD MOUNTING BRACKETS THESE INSTRUCTIONS ARE FOR HEATER INSTALLATION ON FAN UNITS WITH 230V MOTORS 2 gt gt E 7 27 25 Str t Le 124 lt lt SURE POWER IS DISCONNECTED AND LOCKED OUT BEFORE INSTALLATION IMPORTANT FAILURE TO DO SO MAY CAUSE Note Heater Direc 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 Be sure airflow decal is pointing towards the in let of the fan 2 Bolt LTD mounting brackets to each of the six holes in the downstream angle ring of the heater Snug tighten bolts such Figure 2 The six 6 mounting brackets positioned on the LTD Heater that they can still pivot with little force applied See chart for slots six 6 bolts and bolt the remain to bolt through in bracket ing six 6 brackets to fan using WAN nuts removed It may be neces 5 Slot Fan Inlet Bolt Circle sary to remount the fan grill 31 to 35 guard so mounting brackets will seat properly Slots to use for Middle Less than 31 fan mounting bolts are below 3 Pivot brackets so the
12. er of the bin 5 Wear proper breathing equipment or respirator Failure to heed these warnings will result in serious injury or death C 552 LTD HEATER INSTALLATION FUEL CONNECTION Important Do not use propane tanks which have previously been used for ammonia unless they have been purged ac cording 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 1 Propane vapor models are de signed to run directly off of sup ply tank or from a separate ex ternal vaporizer 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 cording to local codes and ordi nances 3 After installation is complete check all connections for leaks DO NOT USE FLAME FOR LEAK TESTING See above for other precautions NATURAL GAS MODELS 1 Natural gas models are similar to vapor models but have a larger orifice to accommodate lower pressure sometimes found with natural gas Run proper size line see speci fications to pipe train on heater Have a qualified gas service man inspect installation to be sure everything is installed ac cording to local codes and ordi nances After installation is complete check all connections for leaks DO NOT USE FLAME FOR LEAK TESTING Se
13. igh limit con 4 trol is in the down position 2 Open fuel valves between tank and heater 3 Turn the heater power switch to ON by toggling the ON OFF Switch to ON position For prolonged shutdown close the tank or supply valve and allow flame to burn until all the gas is out of the line the flame dies out If any problems occur refer to the service section of this manual and follow the proce dure described Some common problems are a Humidistat and or ther mostat is not set high enough b Pressure regulator is not open c Supply valve is not open d High limit button is not pushed in BTU S PER GAUGE PRESSURE PSI PROPANE MODELS APPROXIMATE LOW TEMPERATURE Operating Pressure PSI Diameter 2 4 6 8 10 12 14 16 18 20 18 102900 145970 181870 208190 234510 253660 275200 294340 311090 335020 BTU S PER GAUGE PRESSURE PSI NATURAL GAS MODELS APPROXIMATE LOW TEMPERATURE Operating Pressure PSI Diameter 1 2 3 4 18 144100 205200 250800 289100 322850 353860 383040 16 LTD HEATER OPERATION 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 2 The sensing bulb of the modu lating valve shou
14. imently 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 Variation from table may be required to adjust for grain depth fan performance and bin size 10 The LTD stand off bracket can increase the efficiency of the fan and heater dramatically com pared to using an upwind mounting plate Moreover by applying the heat to the air up wind the air will be a constant temperature discharging into the plenum resulting in more uniform drying After heater is securely mounted connect gas lines as required per the installation re quirements LTD HEATER INSTALLATION LTD HEATER ELECTRICAL INSTALLATION 230V FANS Connect power cord to fan con trol box Make field connections of wires in fan box as shown in Figure IMPORTANT HEATER MUST BE INTERLOCKED WITH FAN FOR SAFE OPERATION NEUTRAL trol optional in heater box as shown in Figure 1 IMPOR TANT THERMOSTAT MUST BE INSTALLED FOR SAFE 3 Connect deluxe thermostat con OPERATION o ON FRANSEOBMER HI LIM RESE CIRCUIT BOARD re d ES 8 30 40 5O O WHITE os ON O SWITCH ER CONTROL BOX 5 HEATER CONTROL 5 120 Y gt T LONA lt GREEN AND RED WIRES 13 LEES OR HI LO UNITS O
15. ld be mounted through the bin wall with the reading side top up The bulb reacts to temperature It changes the amount of gas in crease or decrease burning warmer or cooler depending on the position of the valve SET POINT If the bulb is cooler than it was at the SET POINT the bulb senses the cooler tempera ture and opens the valve further So more heat is applied to the drying air If the bulb is warmer than it was at the SET POINT the valve closes further and re duces the temperature until the air is at the valve SET POINT 3 Itis important that the pressure regulator be set high enough to allow the modulating valve to deliver enough gas to maintain the plenum temperature neces sary The regulator is normally factory set at 15 psi To set the regulator run the heater and turn the modulating valve T handle in This gets full line pressure to the burner Then adjust regula tor to read 15 psi depending on the plenum temperature needed Turn the fan and heater on To setthe modulating valve turn the T handle out counterclockwise until loose and wait a few min utes for the plenum temperature to equalize When the tempera ture under the bin has equalized gradually turn T handle in clock wise about 1 2 turn Wait until temperature under bin has equalized as before If tempera ture under bin is less than the desired temperature continue turning T handle in increasing gas flow and waiting for plenum tempera
16. n reheated which is a waste of fuel in con ventional bin drying systems LTD HEATER OPERATION The following tables are general values for equilibrium moisture con tent The equilibrium moisture con tent is the moisture content that the grain will eventually arrive at if ex posed to specific air conditions for a long enough period of time The equilibrium moisture content does not tell us how fast the grain will lose moisture to get to its equilibrium moisture content Generally drying air conditions with a lower equilib rium moisture content are used to increase the rate of moisture re moval The drying process is then stopped before the grain can reach equilibrium with the drying air The following tables should only be used as a guide for management of grain conditioning systems possible de viations may occur due to varieties and grain condition Values calcu lated from the Henderson Thomp son equation EQUILIBRIUM MOISTURE TABLE FOR SHELLED CORN WET BASIS Temp Relative Humidity percent degrees 10 20 30 40 50 60 70 80 90 35 5 2 7 6 9 5 11 3 13 0 14 8 16 8 19 1 22 2 40 5 0 7 4 9 3 11 0 12 7 14 5 16 4 18 7 21 7 45 4 9 7 2 9 0 10 8 12 4 14 2 16 0 18 3 21 3 50 4 8 7 0 8 8 10 5 12 2 13 9 15 7 17 9 20 9 55 4 7 6 9 8 6 10 3 11 9 13 6 15 4 17 5 20 5 60 4 6 6 7 8 5 10 1 11 7 13 3 15 1 17 2 20 1 65 4 5 6 6 8 3 9 9 11 4 13 0 14 8 16 9 19 7 70 4 4 6 4 8 1 9 7 11 2 12 8 14 5 16 6 19 4 75 4 3 6 3 8 0
17. odels are avail able to accommodate low medium or high temperature grain condi tioning The symbol shown is used to call your attention to instructions con cerning your personal safety Watch for this symbol it points out important safety precautions It means ATTENTION WARN ING CAUTION and DANGER Read the message and be cau tious to the possibility of personal injury or death HEATER OPERATION The principal concern of The GSI Group Inc GSI is your safety and the safety of others as sociated with grain handling equip ment This manual is written to help you understand safe operating pro cedures and some of the problems that may be encountered by the op erator or other personnel As owner and or operator it is SAFETY ALERT SYMBOL your responsibility to know what requirements hazards and pre cautions exist and to inform all personnel associated with the equipment or who are in the heater area Avoid any alterations to the equipment Such alterations may produce a very dangerous situation where serious injury or death may occur WARNING BE ALERT Personnel operating or working around electric fans should read this manual This manual must be delivered with the equipment to its owner Failure to read this manual and its safety instructions is a misuse of the equipment SAFETY ALERT DECALS The GSI Group Inc recom mends contacting your local power compan
18. rying or with addi tional equipment the operation of a fan for aeration The humidistat closes on a humidity rise If the humidistat is set at 50 relative humidity and the humidity of the air sur rounding the sensing unit on the humidistat is greater than 50 relative humidity the micro switch remains closed When the humidity drops below 50 relative humidity the micro switch opens Power then ceases to travel through the hu midistat simultaneously shut ting off the heater If the humi distat is used as an aeration control or fan control for natural air drying additional equipment is required to control the fan power supply so it runs when the humidistat is open 3 The housing of the humidistat has a perforated bottom allow ing air to surround the sens ing element The perforated bottom insures accurate sens ing of the outside humidity The housing also incorporates a vent hole at the top of one side This guards against heat build up in the box changing the relative humidity and de stroying the heat sensing abil ity of the unit Also airis drawn through the perforated bottom and across the sensing ele ment of the humidistat These design features insure accurate sensing of relative humidity The humidistat should be mounted with the back plate corner holes on a corrugation hill It should be positioned ap proximately three feet from the ground or grade line as shown in the illustration
19. ture to equalize until the desired temperature is the stable temperature of the ple num If temperature under bin is the same 10 minutes after you last made any adjustments to the T handle you can be certain that the temperature under the bin is the SET POINT of the valve 1 turn of the T handle equals approximately 7 de grees F of temperature The valve will now keep the ple num temperature at the set point regardless of ambient condi tions as long as humidistat or thermostat do not shut down the heater A bypass orifice is used to maintain a small flame when outside temperature is near or above the set point of the valve The bypass insures steady application of heat at minimum gas flow operation The modulating valve may re quire minor adjustment periodi cally if a certain temperature rise over ambient outside tempera ture is desired To observe how the modulating valve increases the efficiency of bin drying check the gas pres sure of the unit in the morning and compare to the pressure read mid afternoon If the ambi ent outside temperature is sig nificantly greater later in the day as normal the gas pressure will be less Since less heat is required to maintain the same temperature in the plenum the modulating valve will have re duced the amount of gas used by the heater This is preferred to cycling the application of heat as is commonly done The grain is not shocked and cooled quickly and the
20. umidity percent 40 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 50 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 60 13 5 13 3 13 2 13 0 12 8 12 7 12 5 12 4 12 3 12 1 12 0 11 9 11 8 11 7 70 14 8 14 6 14 4 14 2 14 1 13 9 13 7 13 6 13 4 13 3 13 2 13 0 12 9 12 8 80 16 3 16 1 15 9 15 7 15 5 15 3 15 2 15 0 14 8 14 7 14 5 14 4 14 3 14 1 90 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 20 INDICATION TRANSFORMER LTD HEATER WIRING DIAGRAM FLAME OLT LIGHT HH 1447 IGNITION TO FLAME SENSOR GROUND GREEN FLAME SENSOR ELEGTRODE CONNECTION 5 HH 7013 veFOR HI L IMIT PR BH HF 7518 CIRCUIT BOARD FLAME PRESENT O FAN ON TD 100282 RELAY PTI 1112 13 14 15 1 18 21 21 12 23 24 SSS 8 69 69 09 IGHITOR ON CYCLE er INTERLOCK HI LIMIT INTERLOCK D SWITCH i 4 M HH 1092 HH 1082 1442 TRANS IT HOUSE IWG MI LIMIT HI LIMIT SATEH p othe 120 VAC INTERLOCKED TO FAN OR PROVING SWITCH INDICATES LIGHT ON INDICATES LIGHT OFF POSSIBLE CAUSE POSSIBLE SOLUTION
21. y 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 The rotating blade fire warning decals and volt age danger decal must be displayed on the fan heater can The danger decal DC 552 should be present on the inside bin door cover of the two ring door 24 porthole door cover and the roof manway cover If a decal is damaged or is miss ing contact The GSI Group Inc 1004 E Illinois St Assumption IL 62510 217 226 4421 A free replacement will be sent to you ADANGER EWA High voltage Will cause serious injury or death Lockout power before servicing DC 1224 AWARNING Stay clear of rotating blade Blade could start automatically Can cause serious injury Disconnect power before servicing DC 1225 AWARNING Flame and pressure beyond door Do not operate with service door removed Keep head and hands clear Can cause serious injury DC 1227 Rotating flighting Flowing material Crusted material can kill or can trap and can collapse and dismember suffocate suffocate Keep clear of all augers DO NOT ENTER this bin If you must enter this bin 1 Shut off and lock out all power 2 Use safety harness and safety line 3 Station another person outside the bin 4 Avoid the cent
22. y are nearly Slot Fan Inlet Bolt Circle radial from center of heater Stand behind heater and deter ene gt mine which bolts fan inlet Middle 31 3 4 best line up with the brackets Figure 3 The LTD Heater brackets Inner 20 pivoted so they are radial from the Remove the nuts from those center of the heater LTD HEATER INSTALLATION 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 Align mating bracket pairs so that they are in a straight line Tighten bolts on fan and heater rigid Make sure the heater stand off dimension is correct for the fan used Refer to the table below Slide the heater to meet the stand off dimension all around Tighten mating brackets rigid The heater should now be se curely fastened to the fan If not tighten all loose connections Fan HP Stand Off 5 5 7 5 7 10 7 15 7 1 2 20 8 1 2 25 8 1 2 Figure 4 Heater aligned with paired brackets and bolts inserted Figure 6 Check the heater stand off distance based on fan horsepower 9 LTD HEATER INSTALLATION Note The optimum distance the heater should stand away from the fan inlet has been exper
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