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Hunter Fan UH68ODH - page 1
REV 14MAY02 PN 168324 Heater, Tent Model UH68ODK, UH68ODH Manual for UH68G1 with Hunter Part Number 53100 Outdoor Kit Installed and UH68ODH, Part Number 168325 Hunter Manufacturing Company 30525 Aurora Rd Solon, OH, 44139 www.huntermfgco.com ...
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Hunter Fan UH68ODH - page 2
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Hunter Fan UH68ODH - page 3
WARNING! FUEL WARNING Gasoline and JP-4 should NOT be used with the UH68OKD/ODH under any circumstance. Only JP-8 or an approved al ternate fuel as detailed in Chapter 1. Failure to observe fuel requirements coul d cause damage to the heater assembly and injury or death to personnel withi n or around the tent and the heater assembly. Always place f ...
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Hunter Fan UH68ODH - page 4
ELECTRIC SHOCK Always disconnect power cable from heater before doing any type of service work or repairs. SEVERE BURNS HOT EXHAUST DO NOT MOVE THE HEATER ASSEMBL Y WHILE ANY OF THE ADVISORY LIGHTS ARE LIT. Small, portable, shelter heaters of this type are not designed to be moved during operation or before purge cycles are comp lete. Serious injur ...
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Hunter Fan UH68ODH - page 5
UH68ODK Tent Heater Chapter 1 Introduction Scope Type of manual: Operators Model and Name: UH68ODK and UH68ODH, Fo rced air tent heater, with ducts. Purpose of Equipment: Circulates heated air in the Alaska, TEMPER tent, and other soft walled structures. Maintains temperature via room thermostat in the remote control panel. Control panel also has d ...
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Hunter Fan UH68ODH - page 6
UH68ODK Tent Heater 1-2 Specifications Manufacturer Hunter Manufacturing Model UH68ODK Voltage 120 VAC Cycles 50-60Hz Power 400 watts Heat Output 60,000 BTU nominal Air Flow 650 CFM @ .5 IWC Back pressure **Fuel *DF2, DF1, DFA, JP8 Dry Weight 130 Lbs. * Heater is factory set on for DF 2, adjustment to the carburetor is necessary for other fuels. ** ...
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Hunter Fan UH68ODH - page 7
UH68 ODK/ODH Tent H eater Operator s Instructi ons 2-1 Chapter 2 Operating Instruction s Operator Controls and Indicators Table 2. Controls and Indicators Key Control or Indicator Function 1 Main Sw itch Starts and s tops he ater . FAN positio n turns fan only on for venti lation 2 Room Thermo Set for desired temp er ature. * 3 Main Pow er LED (g r ...
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Hunter Fan UH68ODH - page 8
UH68 ODK/ODH Tent H eater 2-2 Table 3. Blink Codes Number of Blinks Problem 1 Low v oltag e at AC input ( < 100 VAC ) 2 Rever se polari ty at AC input 3 Hig h voltag e (> 130 VAC) 4 Not used 5 PC Board over te mp 6 Not used 7 Not used 8 Ignition Faul t Lock out Note: On ly the Ignition fault lockout will shut down the heater. Any other code w ...
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Hunter Fan UH68ODH - page 9
UH68 ODK/ODH Tent H eater Operator s Instructi ons 2-3 Table 5. Key Description Function 1 Inlet Adapter Attachment point for re turn air d uct 2 Storage co mpartm ent Storage for stack, fuel li nes, pow er cord etc. 3 Exhaust elb ow Exhaust stack rests on top 4 Stack suppor t Holds exhaust s tack secur ely 5 Exhaust stack Double w all ex haust sta ...
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Hunter Fan UH68ODH - page 10
UH68 ODK/ODH Tent H eater 2-4 Operation Under Usual Conditions Setup A laska Tent TEMPER Tent Completel y setup the Alaska tent, and d eploy the duct col lars at the en d in whi ch you ar e to setup the h eater. Make sure th e gen erator or power supply is on line . Before setti ng up t he t ent and heater, s ome t hought s houl d be gi ven to the ...
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Hunter Fan UH68ODH - page 11
UH68 ODK/ODH Tent H eater Operator s Instructi ons 2-5 4 5 4 6 7 8 9 10 6 7 Supply Return 12 ...
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Hunter Fan UH68ODH - page 12
UH68 ODK/ODH Tent H eater 2-6 7. Uncoil re mote control (2 ) inside tent an d feed throug h the c ollar w ith the r eturn duct (5) . Attach remote con trol (2) to heater. M ake main sure sw itch is in the off position. 8. Attach pow er cable (3) to heater th en plug in t o power supply . The gr een, main p ow er LED, on the rem ote panel should ill ...
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Hunter Fan UH68ODH - page 13
UH68 ODK/ODH Tent H eater Operator s Instructi ons 2-7 15 14 16 17 18 19 14 17 MAX DIST ANCE 20 21 22 23 24 ...
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Hunter Fan UH68ODH - page 14
UH68 ODK/ODH Tent H eater 2-8 Operating Procedure s The UH68 ODK can b e operate d in ei ther o f tw o modes: a. Heati ng mode. b. Fan only mode. Heating Mode 1. Set the ro om th ermo (1) to the low est detent setting . 2. Move main switch (2) to HEA T. The green stan dby LED (3) should illumin ate 3. Rotate th e room t hermo un til the g reen HEAT ...
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Hunter Fan UH68ODH - page 15
UH68 ODK/ODH Tent H eater Operator s Instructi ons 2-9 Shutdown 1. Place main switch in off positio n. Vent fan w ill continue to run until heat exchan ger has cool ed dow n. The length of time will vary depe nding on ambient temper ature. Operation Under Unusual Conditions Extreme Cold, Belo w 10 o F There is a thermos tatic ally controll ed fuel ...
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Hunter Fan UH68ODH - page 16
UH68 ODK/ODH Tent H eater 2-10 Operation Under Rainy Conditions 1. T he remote contro l pan el is water-re sistant . No special instruc tions for setting up in t he rain . 2. Do not r emove pr otectiv e cov ers from the remote a nd pow er receptacl es unti l ready to connect. 3. To keep rain w ater from collecti ng ar ound heater, pl ace h eater o ...
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Hunter Fan UH68ODH - page 17
UH68 ODK/ODH Tent H eater Operator s Instructi ons 2-11 1 2 2 3 4 5 6 5 6 7 1 ...
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Hunter Fan UH68ODH - page 18
UH68 ODK/ODH Tent H eater 2-12 4. Remo ve inlet duct collar (8) and stow in PUDA 5. Disconnect R emote Cabl e (9) coil up and stow in PUDA 6. Di sconnect power cable (10) , coil up and stow in PUDA. Close PUDA 7. Remov e stack (11) a nd stow in storag e compar tment ( 13) . Secur e w ith spring hold down ( 12) .* 8. Store fuel lines in stor ag e co ...
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Hunter Fan UH68ODH - page 19
UH68 ODK/ODH Tent H eater Operator s Instructi ons 2-13 8 9 10 11 12 13 15 11 14 14 16 11 16 14 17 ...
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Hunter Fan UH68ODH - page 20
UH68ODK Tent Heater Chapter 3 Maintenance Instructions Lubrication Instructions Doors, Pop Up Duct Adapter Lubricate all hinges with MI L-A-907 anti-seiz e compound. Preventative Maintenance Checks and Services (PMCS) Systematic, periodic PMCS are essential to ensure that the heater is re ady for operation at all times. B – Before Operation A – ...
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Hunter Fan UH68ODH - page 21
UH68ODK Tent Heater PMCS Procedures 1.1 Fuel Line System - check all fuel lines and fittings for l eaks. Make sure vent at top Suction Feed Adapter is clear of ice and snow. 1.2 Exhaust stack - make sure exhaust sta ck is clear of ice and snow. Check for damage or anything that might obstruct the flow of exhaust gas. 1.3 Fuel Supply – before fill ...
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Hunter Fan UH68ODH - page 22
UH68ODK Tent Heater Cleaning, burner head 1. Remove Carb mixer assembly 2. Remove Igniter 3. Clean carbon deposits in this area. Use a small wire brush. 5. Finish up with solvent wash commonly used in parts cleaning stations or carb cleaner. Let dry before assembly. 4. Clean these areas using compressed air. CAUTION: Wear appropriate eye protection ...
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Hunter Fan UH68ODH - page 23
UH68ODK Tent Heater Cleaning, Mixer 1. Remove mixer from carb assembly Caution: The mixer assembly is made of brass and can be scratched or dented very easily . Great care must be tak en not damage the mixer nozzle. The performance of your heater depends on this delicate part. 2. Soak mixer in solvent bath for an hour or so to loosen up carbon depo ...
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Hunter Fan UH68ODH - page 24
UH68ODK Tent Heater Reassembly * IMPORTANT The mixer assembly must be seated correctly to insure that your heater has good combustion. Figure 1 shows the mixer assembly properly seated in the burner head. ( carburetor not shown for clarity) Figure 1 Figure 2 shows the mixer incorrectly seated. If left in this position combustion air will leak past ...
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Hunter Fan UH68ODH - page 25
UH68ODK Tent Heater 1.10 Igniter – Check igniter for carbon build up and signs of wear. As the igniter w ears the gap between 1. and 2. will become wider and oval shaped. Replace when signs of wear are evident. 1.11 Fuel Pump – the fuel pump has a filter screen located at the inlet end. To clean remove three screws holding the cap on, remove th ...
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Hunter Fan UH68ODH - page 26
UH68ODK Tent Heater 3-7 ...
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Hunter Fan UH68ODH - page 27
UH68ODK Tent Heater 4-1 Chapter 4 Troubleshooting General This section contains informatio n for locating and correcting m ost operati ng problems. This manual c an not list al l that may occur. W hen per f orming troubl e shooting proc edures, foll ow all w arnings and safet y procedures. At n o time does thi s manual s upercede good co mmon sense ...
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Hunter Fan UH68ODH - page 28
UH68ODK Tent Heater 4-2 1 2 J6 CONN-H2 ZCC 1 2 3 6 5 4 U5 MOC3031 R10 180 M2 M1 G U8 1 2 J5 CONN-H2 1 2 J3 CONN-H2 1 2 J4 CONN-H2 R15 180 R1 20K R4 500K VENT FAN CARB HTR IGNITION COMB BLR VI 1 VO 3 GND 2 U1 L4805 MOUSER # 511-L4805CV R16 5.0 C6 0.1uF C4 100uF D6 TVS-18V V+ 1 GP5/OSC1/CLK 2 GP4/OSC2/AN3 3 GP3/MCLR 4 GND 8 GP0/AN0 7 GP1/AN1/Vref 6 G ...
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Hunter Fan UH68ODH - page 29
UH68ODK Tent Heater 4-3 Troubleshooting Procedures 1.1 Fuel Supply – See P MCS 1.2 Check Flame Switch – the fla m e switch i s a normally open heat sensi tive switch. The UH 68G has two sw itches. As used in the 68 outdoor k it, only the n ormally open switch is activ e. Normally switch 1, r ed and brown w ires, is used. The other sw itch is no ...
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