Sioux Tools S17623 Parts list manual
1
Axial / Centrifugal
Heater
Owner’s Parts and Instruction Manual
For the Following Heater Controls:
Thermostats
Modulating Gas Valves
High-Low Fire
Dual Control (Thermostat/Humidistat)
Sioux Steel Company
Sioux Falls, South Dakota 57101
800-557-4689
Manual No. 169169
Rev F/17-153/9-28-17/KAG
3-3-03/GDS
STEEL COMPANY
R
2
3
CONTENTS
Heater Model List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-5
Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-11
Heater Selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12-13
Installation, Operating, & Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14-18
Low Temperature Drying Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19-21
Automatic Controls (Model TC-100 & TC-400, HT-3000) . . . . . . . . . . . . . . . . . . . 22-25
Solid State High-Low Fire . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26-29
Modulating Gas Valve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30-32
Troubleshooting (solid state) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33-35
Electrical schematic
Basic wiring all units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Incoming power following high limits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Temperature Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
Plumbing diagrams
High fire upper manifold . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Lower manifold, liquid propane . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
Upper manifold, super low fire gas . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
Upper manifold, modulating gas valve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
Upper manifold, high- fire thermostat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
Super-Low Heater Bracket kit assembly S187994 . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
Centrifugal Adapter Frame (208& SCF Series Fans) . . . . . . . . . . . . . . . . . . . . . . . . 45-47
Replacement parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48-50
Template (TC-100, TC-400, & HT-3000) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51-52
Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53-54
Model # ___________________________________
Mfg. Date _________________________________
Purchase
Date _____________________________
4
HEATER UNITS COVERED IN THIS MANUAL
AXIAL HEATERS
WITH THERMOSTAT CONTROL
!
"
"
WITH MODULATING GAS VALVE
""
#
""
#$
"
""
""
""
$
"
""
WITH SOLID STATE HIGH
-
LOW FIRE CONTROL
"
!
%
#
"
!
%
"
"
!
%
$
"
!
%
$#
"
!
%
"
"
!
%
W
ITH DUAL CONTROL (THERMOSTAT/HUMIDISTAT)
$
$
$#
"
$
$$
"
SUPER LOW TEMP AXIAL HEATERS (10-30 DEGREE TEMP RISE)
WITH THERMOSTAT CONTROL
#
#
"
#
##
"
WITH DUAL CONTROL (THERMOSTAT/HUMIDISTAT)
$
#
$
"
"
5
HEATER UNITS COVERED IN THIS MANUAL (cont.)
CENTRIFUGAL HEATERS
WITH THERMOSTAT CONTROL (50F-180F TEMP RISE UNLESS NOTED)
#!#
# #!#
$ #!#"
# #!#&%!%'
#
$$$$ "
WITH MODULATING GAS VALVE (50F-180F TEMP RISE UNLESS NOTED)
# #!# ""
#!#"""
""
""
WITH SOLID STATE HIGH-LOW FIRE CONTROL (50F-180F TEMP RISE UNLESS NOTED)
#$ #!# "!%
# #!#""!%
"!%
"!%
""!%
WITH DUAL CONTROL (THERMOSTAT/HUMIDISTAT) (50F-180F TEMP RISE UNLESS NOTED)
#!#
#!#
#!#"
# #!#&%!%'
$ "
6
READ AND SAVE THESE INSTRUCTIONS
GENERAL SAFETY STATEMENTS
Thank you for choosing a Sioux Steel Company product. It is designed to perform and serve you for many years.
It is the goal of Sioux Steel Company to improve our products whenever it is possible and practical to do so. Sioux
Steel Company reserves the right to change, improve, and modify products at any time without obligation to make
changes, improvements, and modifications on previously sold equipment.
Safety is Sioux Steel Company’s main concern for you and those who are associated with the grain handling
equipment. This manual is written to help you understand safe operating procedures, and some of the problems that
may be encountered by operator or other personnel.
It is your responsibility as owner/operator to know what requirements, hazards, and precautions exist, and to inform
all personnel associated with the equipment. Any alterations to equipment are strictly forbidden. Such alterations
may result in serious injury or death and will void any warranty on product.
This equipment shall be installed in accordance with the current installation codes and applicable regulations which
should be carefully followed in all cases. Authorities having jurisdiction should be consulted before installation is
made.
Carefully review this manual and its safety instructions before installing or operating this unit. Failure to read this
manual and its safety instructions may lead to serious injury or death. If you do not understand any part of this
manual or need assistance, contact your dealer.
Save the manual for future reference by personnel operating or maintaining the unit.
THIS MANUAL DESCRIBES THE OPERATION OF THE AXIAL/CENTRIFUGAL HEATER. THIS
PRODUCT IS IDEAL FOR THE CONDITIONING OF CORN, SOYBEANS, AND OTHER SELECT
GRAINS. ANY OTHER USE IS CONSIDERED A MISUSE OF THE PRODUCT.
7
SAFETY
RECOGNIZE THE SAFETY ALERT SYMBOL
The above symbol means “ATTENTION! BE ALERT! YOUR PERSONAL SAFETY IS INVOLVED!” Note this
symbol in instructions for important issues concerning your personal safety. Read each message carefully to avoid
personal injury or death.
FOLLOW MACHINE SAFETY SIGNS & MESSAGES
Observe safe operating practices. Carefully read this manual and all safety signs on your equipment. Safety signs
must be kept in good condition. Replace missing or damaged safety decals or shields. Safety decals and shields are
available free of charge from Sioux Steel Company, 196 ½ E. 6
th
St., Sioux Falls, SD 57101-1265.
Learn how to use controls and operate equipment. Do not let anyone operate unit (especially youth) without
thorough training of basic operating and safety procedures.
Make no unauthorized modifications to equipment. Modifications may endanger function and/or safety of unit.
Periodically check all mechanical and electrical components. Keep unit in good working condition.
PRACTICE SAFE MAINTENANCE
Read and understand correct service procedures before operating. Keep area clean and dry to prevent accidents.
Machine should never be lubricated, serviced, or adjusted while it is in operation. Hands, feet and clothing must be
kept away from all moving parts. Keep all parts in good condition and properly installed. Fix any damage
immediately. Qualified service personnel should replace worn or broken parts. Any built-up grease, oil, and debris
around machine should be removed.
EMERGENCIES-KNOW WHAT TO DO
A first aid kit should be made readily available.
In the event of fire, a fire extinguisher should be at hand.
Have emergency numbers near your telephone for doctors, emergency medical squad, ambulance service, hospital,
and fire department and also have written directions to your location.
WEAR PROTECTIVE CLOTHING
CLOTHING- Avoid baggy clothes to avoid catching on moving parts.
HEARING PROTECTION- When high noise levels are encountered, ear plugs or muffs should be used.
EYE PROTECTION- Safety glasses should be worn at all times to protect eye from debris.
GLOVES- Always wear gloves to protect hands from sharp edges.
STEEL TOE SHOES- Appropriate shoes should be worn to protect toes from falling debris.
RESPIRATOR- In order to prevent breathing toxic fumes or dust, a respirator may be needed.
HARD HAT- Appropriate headwear should be worn to protect head from falling debris.
FALL PROTECTION- Appropriate fall protection should be worn when working at elevations greater than six (6)
feet.
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8
WARNING: To reduce the risk of fire, electric shock, or injury to persons, observe the following:
1. Use this unit only in the manner intended by the manufacturer. If you have any questions, contact the
manufacturer.
2. Before servicing or cleaning unit, switch power off at service panel and lock the service disconnecting
means to prevent power from being switched on accidentally. When the service disconnecting means
cannot be locked, securely fasten a prominent warning device, such as a tag, to the service panel.
3. Installation work and electrical wiring must be done by a qualified person(s) in accordance with all
applicable codes and standards, including fire-rated construction.
WARNING: To prevent explosion or fire:
1. Carefully review the operator’s manual.
2. Clean under floor, as fines may cause a bin fire.
3. Do not use to exhaust hazardous or explosive material and vapors.
4. Disconnect and lock out all power sources before servicing equipment.
WARNING: Keep clear of all moving parts
1. Keep people (ESPECIALLY YOUTH) away from equipment, particularly during operation.
2. Keep away from all moving parts. Entanglement can cause serious injury or death.
3. Keep inlet guard in place and in good working condition.
4. If fan is wired for suction, outlet must be shielded to protect an individual from moving parts.
Failure to follow the above precautions may cause serious injury or death.
CAUTION: To avoid electrocution, all equipment must be properly wired and grounded according to electrical
codes. Have unit wired by a qualified electrician.
Have your electrician install a main power disconnect switch capable of being locked only in the OFF position.
Mark disconnect clearly as to the equipment it operates. Always LOCK OFF main power disconnect switch
whenever equipment is not in use or when servicing the unit.
9
DANGER: Never enter bin, unless all power is locked off and another person is present. Rotating augers can kill or
dismember!
DANGER: Flowing grain may trap and suffocate. If you enter a bin of flowing grain you can be completely
submerged in grain in seconds. Failure to heed may cause serious injury or death.
WARNING: Heater must be electrically interlocked with fan. Never operate heater without airflow. Failure to do so
may cause serious injury or death.
CAUTION: To avoid personal injury, frequently inspect all mechanical and electrical components. LOCK OFF all
power whenever servicing equipment. Replace and/or repair worn parts. Be sure all electrical wire is in good
condition.
DANGER: Disconnect electricity before inspecting or servicing. Lock out all power and have another person
present. Always lock off all power and check with voltage meter before servicing. Failure to do so may cause
serious injury or death.
10
SAFETY DECAL LOCATIONS FOR AXIAL HEATER
Safety decals and shields are mounted whenever possible at factory. Please check that all decals are in place
according to these drawings and in good legible condition. To order replacement decals or shields (NO CHARGE)
contact your dealer or Sioux Steel Company, 196 ½ E. 6
th
St., Sioux Falls, SD 57101-1265. Please specify serial
number.
IMPORTANT! The following safety decals should be mounted on your equipment as shown below. If suggested
locations are not clearly visible, place safety decals in a more suitable area. Never cover up any existing safety
decals.
Make sure location area for decal is free from grease, oil, and dirt. Remove backing from decal and place in proper
position.
1. WARNING- 165232 (SAFE OPERATION DECAL)
2. WARNING- 165231 (DISCONNECT ELECTRICITY/KEEP GUARDS IN PLACE)
11
Safety- In Case of Fire Instructions
IMPORTANT:
TO MAINTAIN GRAIN QUALITY AND AVOID RISK OF BIN FIRE, DRYING TEMPERATURE
SHOULD NOT EXCEED 130 DEG. F FOR IN-BIN STIR DRYING OF CORN, OR 180 DEG. F FOR IN-
BIN CONTINUOUS-FLOW SYSTEM. LOWER TEMPERATURE MAY BE REQUIRED DEPENDING
UPON DRYING CONDITIONS.
KEEP AREA BENEATH PEFORATED FLOOR CLEAN OF ALL FINES AND FOREIGN MATERIALS.
IF FIRE IS SUSPECTED:
1. Shut off gas at supply tank and heater. Shut off fan.
2. Call Fire Department.
3. Seal fan inlet and any other openings to smother fire.
4. Remove fan and heater from transition. Sand-bag transition opening. If possible, flood bottom of bin (plenum)
with water to a depth of 4” above perforated floor. This will protect steel floor supports and may extinguish fire,
depending upon it’s location. If fire is located higher in bin, insert a long pipe with small holes through bin wall
and into grain to direct water at source of fire.
5. Unload bin. ALL GRAIN MUST BE REMOVED FROM BIN TO REACH POINT OF FIRE. It should not be
necessary to cut large hole in bin to remove grain.
NOTE: Grain may smolder for days. Do not restart fan in hope that fire has gone out, unless all grain has been
removed from bin.
It is important that grain be screened before going into bin to avoid formation of fines and trash. Cleaned grain is
less likely to develop hot spots.
12
HEATER SELECTION
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WARNING! *9-..1908+*:(;1<(,,9+3:14-3.71+01.0-*-0@.18-.50-4-3.1D@190+0(-*:--5397
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97+5B1.0-B3.*3@>1.:(;1/8+*:8-.+B(*<(,,9+3:1+:5397/+5+)1+:3*/1.:(;1
Recommendation 1.19-551*/071.1:-3.91:-8071*(>1.:(04-8(**1:-0+E:([email protected]/390:+*/
(-:4:015:*)(*11.(*)1@+.051*071(.7+*/4%+*1,190(-*"3(/1@.-).+59+*B1+991::1/+0071
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FUEL SOURCE: (I3(/@.-@+*15-/1,:&<(07>+@-.(;1.'+.1.19-551*/1/8-./.4(*)<71*3:(*)->1.
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8--0-88,1D(B,17-:1B10<11*831,,(*1+*/71+01.18-.19-**190(*)0-71+01.=@3.)1)+:,(*10-
B,-<-30+*4/(.0(*@(@171*3:(*)>+@-.71+01.=9-**190+0.1)3,+0-.(see A-LP Vapor drawing on
page 13). 71*3:(*),(I3(/71+01.=9-**190+0?:0.+(*1.&see B-LP Liquid drawing on page 13'
+03.+,)+:5-/1,:+.1+>+(,+B,1?-3.)+:9-5@+*4:7-3,//1,(>1.#@:(3*/1.8,-<0--B0+(*
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(*9,3/1'(*)+:,(*1*1+.71+01.0-9-*0.-,71+0-30@30
LOW TEMPERATURE DRYING: -<015@1.+03.1/.4(*)(:3:1/0-+97(1>1+#L/.-@(*.1,+0(>1
735(/(04+(:(*)071-30:(/1015@1.+03.1&+5B(1*0'B4*-5-.107+*/1).11:=<71*3:(*)+*+D(+,
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9-511I3(@@1/<(07071.5-:0+0+*/3*/1.B(*071.5-5101.1>1.1D911/#/1).11015@1.+03.1.(:1H
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8+(,3.107+0(:*-09->1.1/B4071B(*5+*38+903.1:<+..+*011 Further notes on low temperature
drying can be found on pages 19-21.
13
CONTINUOUS FLOW DRYING. ()7!,-<-.5-/3,+0(*)>+,>1&9-*0(*3-3:8,+51'(:.19-551*/8-.7()7
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BATCH-IN-BIN OR STIR DRYING: 71.5-:0+0=7()7!,-<-.5-/3,+0(*)>+,>13*(0:5+4B13:1/8-.071:1
:04,1:-8/.4(*)
LPG TANK SIZE (GALLONS) FOR VAPOR WITHDRAWL*
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B - LP LIQUID
SIDE VIEW
C- NATURAL GAS
14
INSTALLATION, OPERATING, & MAINTENANCE
SOLID STATE CONTROL HEATER
FOR OPERATION WITH PROPANE VAPOR, PROPANE LIQUID, AND NATURAL GAS
DANGER: THESE UNITS OPERATE WITH FLAMMABLE AND EXPLOSIVE GASES,
IMPROPER INSTALLATION, OPERATION, OR MAINTENANCE CAN CREATE
POTENTIAL DANGER. READ ALL INSTRUCTIONS CAREFULLY, AND OBEY ALL
CAUTIONS AND WARNINGS. FAILURE TO DO SO COULD RESULT IN SERIOUS
BODILY INJURY OR PROPERTY DAMAGE.
SHIPPING, RECEIVING AND INSPECTION
Review heater model number, confirming this is the model you ordered. Contact your dealer immediately
if otherwise. All cardboard cartons are shipped attached to heater, with power cord installed. Inspect
heater for damage, noting any found on freight bill.
PREPARING SITE FOR INSTALLATION
WARNING! Be sure to review pervious pages on model selection and warnings. Installation should be
performed only by a qualified dealer, who is experienced and familiar with grain drying equipment, and
with local codes, laws, and ordinances regulation gas and electrical installations. Improper installation
could result in serious bodily injury or property damage.
Before installing heater and controls- your locale gas company needs to review your site and read the
following information regarding your needs for a correct, safe installation, and operating future.
Heater Using Propane Vapor
A 1,000 gallon storage tank should provide adequate vaporization to ignite the heater within its capacities.
The heater should not be used if the tank is less than 20% full. The storage tank should be equipped with
a propane regulator with an outlet pressure of range of 0 to 60 psi, set and locked at
30 psi.
If the tank is within 50 feet of the heater, 5/8” OD, type K copper tubing, or ½” schedule 80 black pipe
should be used for the gas supply line from the vapor regulator on the tank to within 3 feet of the heater, if
the tank is more than 50 feet away, use 7/8” OD type K copper tubing.
CAUTION: The gas storage tank should be at least
25 feet from the heater. Local ordinances may require
further distances.
A high pressure 3 to 5 foot flexible hose for use with
LP gas should be used to connect gas supply line directly
to heater regulator (see diagram A).
The gas supply line should be buried at least 6” below the
ground.
DIAGRAM A
15
Heaters Using Liquid Propane
When the propane storage tank will not provide sufficient vapor to operate the heater continuously, a
model with a preinstalled vaporizer should have been purchased. The purpose of the vaporizer is to
convert the liquid propane to a vapor by using the heater flame to heat the propane. The dealer selling the
heater usually knows if a vaporizer is needed, and should recommend a model that incorporates one.
NOTE: Heaters are shipped from the factory with vaporizer pushed in as far as housing will allow, thus
protecting the outside plumbing during transportation. Once heater has been installed in conjunction with
your fan, unlock vaporizer mounting screws and move coils to the center of the housing, directly in front
of combustion chamber. An improperly mounted vaporizer could allow liquid propane to freeze in upper
manifold and not allow heater to work properly.
A 1,000 gallon storage tank should provide adequate liquid propane to ignite the heater within its
capacities. The heater should not be used if the tank is less than 20% full. The storage tank should be
equipped with a propane regulator with an outlet pressure of range of 0 to 60 psi, set and locked at 30 psi.
If a vaporizer is to be used, and the tank is less than 50’ away from the heater, the gas supply line from
the storage tank should be 3/8” OD type K copper tubing, and the tank itself should be equipped with an
excess flow valve to stop the flow in the event that the line should break. If tank is further than 50’, a ½”
OD type K copper tubing should be installed.
CAUTION: The gas storage tank should be at least
25 feet from the heater. Local ordinances may require
further distances.
A high pressure 3 to 5 foot flexible hose for use with
LP gas should be used to connect gas supply line to
the heaters Y strainer located on the lower manifold
(see diagram B.)
The gas supply line should be buried at least 6” below
the ground.
Heaters Using Natural Gas
The piping used to connect the heater to the gas supply line should be large enough to maintain 5 psi on
heaters panel mounted gauge while the heater is operating. The contractor or Gas Company should
recommend proper pipe size.
INSTALLING HEATER
WARNING! Be sure to review pervious pages on model selection and warnings. Installation should be
performed only by a qualified dealer, who is experienced and familiar with grain drying equipment, and
with local codes, laws, and ordinances regulation gas and electrical installations. Improper installation
could result in serious bodily injury or property damage.
NOTE: The heater should be handled by the housing legs or mounted handles. Never handle, move or lift
the heater by any parts of the gas manifold as this could loosen or break the manifold and cause leakage.
Connecting To Fan and Bin
Axial and centrifugal heaters should be mounted between the fan and the transition leading to the grain bin.
Air Flow with Axial and Centrifugal Heater
FAN →HEATER →TRANSITION →BIN
B - LP LIQUID
SIDE VIEW
Diagram B
16
Upstream centrifugal71+01.::7-3,/B15-3*01/-*071(*,10:(/1-807191*0.(83)+,8+*3:(*)071
B.+96106(0&$'=:-,/:1@+.+01,4See page 448-.+::15B,4(*:0.390(-*:8-.3:1-8B.+96106(0
71*3:(*)+7()7!015@71+01.(*+*3@:0.1+591*0.(83)+,9-*8()3.+0(-*=*1>1.B3.*71+01.+B->1
/1).11:&%'()71.015@1.+03.1:9-3,//+5+)191*0.(83)+,8+*<711,=+*/>-(/<+..+*04
Air Flow with Upstream Centrifugal Heater
HEATER →FAN →TRANSITION→BIN
CAUTION: After mounting the heater, the airflow arrow decals on the heater should be pointing in the
direction of the airflow.
Mounting Transition High Limit
Once heater has been installed, mount transition
high limit. Cut 1-1/16” hole in top of transition
that is centered for high limit (see Figure AA).
Locate transition high limit connected to heater
by a 12’-0” cord. Take note of the thermos disk
protruding from mount box. Disk goes into hole
newly cut into transition. Remove backing plate
on high limit mount box, caulk around hole and
set disk in hole. Self-drill to transition, and replace
cover.
Mounting Control System
Once heater and transition high limit have been installed; follow instruction for which control system you
have purchased from the respected manuals included; automatic thermostat (pages 22-25), high-low fire
thermostat (pages 26-29), or modulating gas valve (pages 30-32).
OPERATING INSTRUCTIONS
CAUTION: To maintain grain quality and avoid risk of bin fire, drying temperature should not exceed
130 degrees (F) for in-bin stir drying of corn, or 180 degrees (F) for in-bin continuous flow systems,
Lower temperature may be required depending upon drying conditions.
Keep area beneath perforated floor clean of all fines and foreign material, and check routinely.
Heater Starting Procedure
While it’s best to follow starting procedures included on each model, based on the various types of
controls, the following are the basics. Setting of the controls should be in conjunction with the following:
1. Always start fan first; checking to be sure heaters 115 volt power supply is interlocked with fan.
2. Open all fuel sources from tank to heater. Start heater by moving switch to the “on” position on front
of heater control panel. A 45 second delay will occur, as fan purges the heater of any fuel vapors.
FIG. AA
TRANSITION HIGH LIMIT
Reset b
utton
Push to
reset
Hi Limit
Switch
High
Limit
Bin
17
3. Red light located on heater control panel comes on indicting solenoid valves; transformer and spark
plug are energized. – Heater lights and fires.
4. Unlock locking nut of heater regulator. Adjust gas pressure setting according to your models controls
(thermostat, modulation gas valve, high-low thermostat – See instructions provided later in this
manual for those controls).
CAUTION: Higher than necessary gas pressure setting will not dry your grain any faster.
5. Whenever shutting down your fan & heater system, always close the fuel source at the tank first,
draining the lines, allow the heaters safety system to detect no flame and lock itself out.
6. AFTER STEP 5 HAS BEEN COMPLETED- turn the heaters panel power switch to the off
position. Then shut down the fan.
SIDE VIEW
REGULATOR
VAPOR SAFETY
RELEASE
HIGH
PRESSURE
HOSE
LIQUID
SOLENOID
VALVE
HIGH
PRESSURE
HOSE
LIQUID
SAFETY
RELEASE
LIQUID
STRAINER
GAS
COCK
18
MAINTENANCE
KEEP ALL GUARDS AND SCREENS IN PLACE
DISCONNECT ALL POWER SOURCES
BEFORE DOING ANY REPAIR, MAINTENANCE OR INSPECTIONS!
BEGINNING OF EACH DRYING SEASON:
1. Remove inlet screen. With power off, check for foreign material on fan blade. Turn fan by hand to be sure it
rotates freely.
2. Check wiring of fan and heater. Look for loose connections, bare wires, or rodent damage. Be sure to check
ignition wire and flame sensor wires for any damage.
3. Examine the flame rod for cracked insulation.
4. Examine spark plug for proper gap. The gap should be approximately 1/8”. Spark plug and flame rod should be
examined periodically throughout drying season.
5. All plenum controls should be checked.
6. Check all plumbing connections for leaks, using soap solution.
7. Check vaporizer adjustment daily. Weather condition changes can demand new adjustment.
AFTER DRYING SEASON:
The balance of a vane axial blade is very critical. Vibration can cause the fan housing to crack. To prevent this,
check behind the blade for dirt, dust, or foreign material.
Burn fuel out of lines and turn off at source.
Cover fan inlet to keep out weather, pests, and to prevent “wind milling” which can cause wear on the start switch in
single phase motors.
DURING OFF SEASON:
Every six weeks, remove inlet cover and operate fan to redistribute grease in bearings. Let motor warm up enough to
force out any accumulated moisture.
Make sure control box cover is in place and secured. Turn off power and fuel at source.
NOTE: One drop of liquid LP will expand 270 times as it converts to vapor. It would be very dangerous to have a
vaporizer coil develop a leak during heater operation. Be sure to check vaporizer coil yearly. Vaporizer should be
replaced every 5 years.
19
NOTES ON LOW TEMPERATURE DRYING
LOW TEMPERATURE DRYING: -<015@1.+03.1/.4(*)(:3:1/0-+97(1>1+#L/.-@(*.1,+0(>1
735(/(04+(:(*)071-30:(/1015@1.+03.1&+5B(1*0'B4*-5-.107+*/1).11:=<71*3:(*)+*+D(+,
-.91*0.(83)+,8+*@.-/39(*)0-985@1.B3:71,=+*/+3@1.M-<71+01.<(,,+97(1>107(:J11@(*
5(*/=<1:3))1:0+).+(*:@.1+/1.8-.4-3.B(*+*/07(:04@1-8/.4(*):7-3,/B1(*+:(03+0(-*<71.14-3
+.13:(*)4-3.B(*0-/.4-*183,,B(*@1.41+.&*-08-.9-*0(*3-3:8,-</.4(*)',,:3@1.,-<71+01.:
9-511I3(@@1/<(07071.5-:0+0+*/3*/1.B(*071.5-5101.1>1.1D911/#/1).11015@1.+03.1.(:1H
07(:9+*9+3:1+*35B1.-8@.-B,15:,(61->1./.4(*)=+*/9+3:1+9.3:01/9-*/(0(-*.1:3,0(*)(*B(*
8+(,3.107+0(:*-09->1.1/B4071B(*5+*38+903.1:<+..+*011
-<15@1.+03.1.4(*)1@1*/:*1>1.+,[email protected]+*0+.(+B,1:H
1+071.!(*91,(00,171+0(:3:1/0-9-*0.-,071.1,+0(>1735(/(04=-@1.+0(-*-8/.4(*):4:015::7-3,/
-*,40+61@,+91<71*+>1.+)1/+(,4015@1.+03.1(:B10<11*+*/#/1).11:%71*015@1.+03.1(:
+B->1#/1).11:%=+,,-<+B,1:0-.+)10(515+4*-0B1,-*)1*-3)70-/.4).+(*B18-.1(0:@-(,:1,-<
/1).11:%=/.4(*):7-3,/B1/1,+41/3*0(,<+.51.<1+071.B19+3:1/.4(*).+01:<(,,B1:,-<
(.8,-<!.-@1.+(.8,-<,1>1,:53:0B15+(*0+(*1/0-/.4).+(*B18-.1+*4:@-(,+)1B1)(*:*:388(9(1*0
+(.8,-<<(,,9+3:1:@-(,+)1B18-.1/.4(*)(:9-5@,101
-(:03.1-*01*0!71<1001.071).+(*(:=0718+:01.071:@-(,+)1-.1+(.8,-<(:*11/1/8-.<1001.
).+(*B19+3:1071).+(*/.(1:5-.1:,-<,4+*/(0:+,,-<+B,1:0-.+)10(51(:,1::4@(9+,,4=%(:
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@[email protected](-*+,0-+(.8,-<8+(.8,-<(:(*9.1+:1/#L=071*071/.4(*).+01+,:-(*9.1+:1:B4#L715-.1
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5-3*0-81+00(,(;1/!71+8-.151*0(-*1/&!/1).11:%5+D(535'53:0B1+/71.1/0-+0+,,
0(51:71*+//(*):3@@,151*0+,71+0=071.19-551*/1/+(.8,-<53:0*-0B1.1/391/=*-.:7-3,/071
B(*B1,-+/1/<(07).+(*<1001.07+*.19-551*/1/71+//1/71+071,@:0-9-*0.-,071.1,+0(>1
735(/(04-8071/.4(*)+(.0--B0+(*071/1:(.1/8(*+,5-(:03.19-*01*0+*/@.1>1*0.1<100(*)/3.(*)+*
1D01*/1/@1.(-/-8/+5@=9-,/<1+071.1+0:7-3,/-*,4B1+//1/<71*071.1,+0(>1735(/(041D911/:
L0-+>-(/->1./.4(*)+*/5(*(5(;11*1.)49-:0:
+*+)(*)-<15@1.+03.1.4(*)4:015F
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O+(03*P,+>1.+)1/+(,4015@1.+03.1:+.1B10<11*/1).11:%+*/#/1).11:%
O+(03*P,7+.>1:05-(:03.19-*01*0:+.1<(07(*0719+@+B(,(P1:-84-3.:4:015
O,1+*).+(*0-.1/391.1:(:0+*910-+(.8,-<+*/([email protected]>1:0-.+B(,(04
O:1+).+(*:@.1+/1.0-,1>1,).+(*=1>1*/(:0.(B3P-*-8).+(*(:1::1*P+,8-.3*(8-.5/.4(*)
O0+.08+*:+*/-@1*7+0971:<71*Q--.(:9->1.1/
%(,,(*).-91/3.1:
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0(51:8-.071(*(0(+,8(,,?-35+4+//+//(0(-*+,,+41.:-8).+(*+801.(*(0(+,8(,,/.(1:80715-(:03.1
9-*01*0-8071:19-*/8(,,(:1I3+,0-071(*(0(+,8(,,=+//-*1!7+,8-8071(*(0(+,8(,,/1@0707+*071(*(0(+,8(,,=
+//0<-!07(./:-8071(*(0(+,8(,,/1@071>1.4!/+4:3*0(,071B(*(:83,,85-(:03.19-*01*0-8071
20
:19-*/8(,,(:07.11@-(*0:-.5-.1/.(1.07+*071(*(0(+,8(,,=+//,+41.:1I3+,0-071(*(0(+,8(,,/1@071>1.4
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0-@8+*:+*/9,-:17+0971:<71*0-@,+41.(:3*(8-.5,4/.4+*/9--,
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31
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