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MANUAL RESET HIGH LIMIT SWITCH

This heater has one high limit switch; located inside the solid door end on the heater chamber.

The high limit switches can be easily identified by a red reset button in the center of the switch.

Function

If the heater overheats, the high limit switch can trip, opening the electrcial circuit to the gas control valve. 
Overheating is generally caused low voltage, blocking the heater’s air inlet, or excessive gas pressure.

Resetting

If the high limit switch trips; remove the red cap and firmly press the reset button in the middle of the switch. 
Then, shut the heater off  and turn it back on. Determine the cause of the limit tripping.

Testing

To ensure proper function of this critcal safety component, test the switch annually, typically when the heater 
is given a thorough cleaning.

 1. Remove the high limit switch from the heater.

2.  With a pliers hold the switch by one of its mounting legs, apply a small, soft  flame only to the sensing 

portion on the back of the switch. Be careful not to melt the plastic housing of the switch when conducting 
this test.

3.  Within a minute, you should hear a click coming from the switch, indicating the contacts of the switch have 

opened.

4.  Allow the switch cool down for about a minute. Remove the red cap and firmly press the reset button on the 

switch.

High Limit

WARNING: Fire Hazard

•  Do not operate the heater with the high limit switch bypassed.

• Operating the heater with the high limit switch bypassed or jumper-ed may lead to 

overheating, possibly resulting in a fire, with subsequent damage to the heater or 
property damage.

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Содержание Sleeptight 800

Страница 1: ...Sleeptight 800 150 133029 REV A OWNER S MANUAL AND INSTRUCTIONS Report No 0545GH006S LP Vapor Withdrawal PS080 80 000 Bth 23 4 kW ...

Страница 2: ...ged due to improper gas or electric service damaged in transit or that have been repaired or modified by others without Manufacturer s written authorization Buyer shall have no right to enforce this Warranty unless it has complied with all of its obligations under the contract for purchase lease of the Products including without limitation being current on all payment terms THIS LIMITED WARRANTY I...

Страница 3: ... Instructions 12 System Components 15 Gas Train and Electrical Components 16 Control Components 18 Gas Connection 21 Electrical Connection 22 Heater Start Up Thermostat Setup 23 Sequence of Operation Overview 24 Heater Shut Down 25 Ignition Board Troubleshooting 26 Heater Wiring Diagrams 36 Fresh Air Module Wiring Diagram 37 Replacements Parts Service 38 Maintenance Instructions 39 TABLE OF CONTEN...

Страница 4: ...tthe manufacturer WARNING Fire burn inhalation andexplosion hazard Keepsolidcombustibles suchas buildingmaterials paper orcardboard asafedistanceawayfromtheheateras recommended by the instructions Never usetheheaterinspaceswhichdoormay contain volatile or airborne combustibles or products such as gasoline solvents paint thinner dust particles or unknown chemicals FOR YOUR SAFETY The use and storag...

Страница 5: ...ICE Indicates a potentially hazardous situation which if not avoided could result in property damage WARNING Operation service and repair of this equipment could result in exposure to electrical mechanical or other potential safety hazards and should only be performed by qualified personnel Use extreme caution and observe safety regulations at all times WARNING Any unauthorized modification of thi...

Страница 6: ...hours Provide ventilation air exchange either natural or mechanical as required to maintain acceptable indoor air quality WARNING Air Quality Hazard Ensure that the flow of combustion and ventilation air exchange cannot become obstructed As the building tightens up during the construction phases ventilation may need to be increased HIGH ALTITUDE USE Installation or use of this appliance at altitud...

Страница 7: ...les or unknown chemicals Adequate building relief must be provided so as to not over pressurize the building when this heater is operating at its rated capacity OMNI Test Laboratories certified to ANSI Z83 7 2017 CSA 2 14 2 017 Gas Fired Construction Heater Gases Propane Capacity 80 000 Btu Hr maximum Blower 1600 CFM Electrical 115V 60Hz 1Ph 4 7 Amps starting 3 2 Amps continuous Min Amb Temp 20 De...

Страница 8: ...lts damage to rivnut may occur LEG INSTALLATION 1 Place the foot inside the heater base as shown in figure below 2 Secure leg to heater with provided bolts 1 4 20 x 5 in WHEELS INSTALLATION 1 Insert the wheel axle through the wheel the heater base and the bracket as shown in previous figure 2 Insert the cotter pin through the wheel axle to secure it 3 Repeat steps for the other wheel 7 ...

Страница 9: ... hose hanger to the side of the heater with the provided 1 4 20 x 3 4 bolts and 1 4 flat washers See previous figure FRESH AIR MODULAR HANGER Install the stand off screws to the heater as shown in the figure above After tightening the Stand Off screws there will be a space between the screw head and the case to hang the fresh air module 8 NOTE Ensure handles are positioned as shown Flat Washer Bol...

Страница 10: ...hters check for escaped gas Have them air out the building and area before you return Properly trained service people must repair the leak check for further leaks and relight the heater ODOR FADING NO ODOR DETECTED Some people cannot smell well Some people cannot smell the odor of the man made chemical added to propane or natural gas You must determine if you can smell the odorant in these fuel ga...

Страница 11: ...must completely familiarize yourself with each model heater by reading and complying with the safety instructions labels owner s manual etc that are provided with each heater b To be a qualified gas installation person you must have sufficient training and experience to handle all aspects of installing repairing and altering gas lines including selecting and installing the proper equipment and sel...

Страница 12: ...tets of the heater Doing so may cause improper combustion or damage to heater components leading to property damage 8 The hose assembly shall be visually inspected on a daily basis after heater relocation and when the heater is in use If it is evident there is excessive abrasion or wear or if the hose is cut it must be replaced prior to the heater being put into operation The hose assembly shall b...

Страница 13: ...quipment ANSI A10 10 National Fuel Gas Code ANSI Z223 1 NFPA54 Liquified Petroleum Gas Code NFPA 58 or the Natural Gas and Propane Installation Code CAN B149 1 as appropriate GENERAL OPERATING INSTRUCTIONS 1 Read all safety precautions when installing this heater If during the installation or relocating of heater you suspect that a part is damaged or defective call a qualified service agency for r...

Страница 14: ...s the gas control valve inlet and outlet connections with approved gas leak detectors If a leak is detected check the components involved for cleanliness in the thread areas and proper application of pipe compound before further tightening Tighten the gas connection as necessary to stop the leak If necessary replace the parts or components involved if the leak cannot be stopped Ensure all gas leak...

Страница 15: ...uipment from any people using and visiting the structure 13 Take time to understand how to operate and maintain the heater by using this Owner s Manual Make sure you know how to shut off the gas supply to the individual heater Contact your fuel gas supplier if you have any questions 14 Any defects found in performing any of the service or maintenance procedures must be corrected and defectiveparts...

Страница 16: ...SYSTEM COMPONENTS LP Gas Hose Assembly Fresh Air Fan Module 2 way LP Tank Manifold 15 Interconnect Cable ...

Страница 17: ...16 GAS TRAIN COMPONENTS ITEM DESCRIPTION 3 GAS CONTROL VALVE 4 CSST TUBE 5 IGNITER CABLE 6 IGNITER 3 4 5 6 ...

Страница 18: ...CATOR LED 15 IGNITION CONTROL MODULE 9 HIGH LIMIT INDICATOR LED 16 CO MONITOR BOARD 10 POWER INDICATOR LED 17 N C RELAY CO MONITOR 12 VDC 11 DIGITAL OPERATING THERMOSTAT 18 FUSE HOLDER 12 ROCKER SWITCH W LED ON OFF ON 19 N C RELAY HIGH LIMIT 24VAC 13 N O RELAY GAS CONTROL VALVE 24VAC 20 N O RELAY PREVENT CO MONITOR RESET 12VDC 7 15 11 19 8 16 12 10 17 20 13 9 18 14 ...

Страница 19: ...ITEM DESCRIPTION 21 POWER ENTRY RECEPTACLE 24 POWER SWITCH 22 INTERCONNECT CABLE SOCKET 25 POWER INDICATOR LED 23 5 AMP BREAKER RESET BUTTON 26 FRESH AIR FAN Fresh Air Module Interface CONTROLS COMPONENTS 22 21 23 24 25 26 ...

Страница 20: ...Electrical Interface Locations 2 1 Operator Interface Location ITEM DESCRIPTION 1 INTERCONNECTING CABLE 2 POWER ENTRY RECEPTACLE 19 ...

Страница 21: ... air fan module must be installed to supply a continuous stream of fresh ventilation air into the area being heated at all times during heater operation Failure to comply can result in death or serious bodily injury from hazards of asphyxiation or carbon monoxide poisoning WARNING Forindooruseonly AdequateventilationshallbeprovidedinaccordancewithOSHA 29CFR1926 154 SafetyRequirementsforTemporaryan...

Страница 22: ...orage and Handling of Liquefied Petroleum Gases ANSI NFPA 58 or the Natural Gas and Propane Installation Code CSA B149 1 as applicable c Connect the LP cylinder s to the provided tank manifold regulator assembly and connect the provided gas hose assembly between the regulator and the heater gas train by utilizing the supplied quick connect fittings WARNING The tank manifold regulator assembly and ...

Страница 23: ...s detected must be repaired before heater is placed into service 1 Attach the male quick connector to the ridged part of the hose 2 Install the street elbow to the gas valve inlet 3 Install the hose adapter to the street elbow 4 Attach the hose to the hose adapter Electrical Connection a Plug the Interconnect Cable into the fresh air fan module and the heater b Plug the electrical power cord into ...

Страница 24: ... pre purge cycle NOTE It is normal for air to be trapped in the gas hose upon each initial startup The heater may require more than one trial for ignition before air is finally purged from line and ignition takes place Thermostat Operating Instructions NOTE Set temperature may only be set between 120 and 140 degrees F 1 Press and release the SET button The SP text appears on the display 2 Press th...

Страница 25: ...ition control closing the fuel valve and stopping burner flame 11 The unit enters its 60 seconds post purge period 12 If ignition is not achieved within the ignition trial period the gas valve is shut off the blower motor continues to run for a 30 second inter purge period Additional ignition trials follow the specified sequence If all 3 trials for ignition have occurred without proper ignition an...

Страница 26: ...om the wall outlet and both the Fresh Air fan Module and Heater g Unplug the Interconnect Cable Fresh Air fan Module and Heater Remove fresh air fan module Return door or window to its normal position h When the heater is stored indoors the connection between the propane supply cylinder s and the heater must be disconnected and the cylinder s removed from the heater and stored in accordance with t...

Страница 27: ...ure switch 4 Check fresh air modular cable connections between the fresh air modular and the heater 5 Check cable for cuts or damages 3 Flashes Lockout Ignition lockout from too many trials 1 Verify that gas supply available 2 Verify that the gas valve is receiving 24 VAC 3 Check if spark igniter is cracked or dirty 4 Check ground circuit wiring 5 Check the high limit switch reset if needed 4 Flas...

Страница 28: ... the front case panel for access to the heaters interior components 6 Disconnect the appropriate electrical leads when replacing components 7 For reassembly reverse the respective service procedure Ensure gas connections are tightened securely and leak checked 8 After servicing start the heater to ensure proper operation WARNING Burn Hazard Heater surfaces are hot for a period of time after the he...

Страница 29: ...acing Motor Mount Plate Fan Wheel Motor Clearance AIR PRESSURE SWITCH The air pressure switch is located on the cold air housing internal to the heater It must work properly to allow an ignition cycle If the air pressure switch contacts are closed before the ignition control starts the fan motor or do not close on a call for heat after the fan motor starts ignition will not occur To service Discon...

Страница 30: ...igniter assembly 2 Remove the 2 screws securing the igniter assembly to either the burner or the heat chamber The igniter and ground rod should be cleaned to maintain proper ignition Use steel wool or emery cloth Rub briskly to remove buildup of dust dirt and oxide Check the igniter s ceramic base for cracks Replace the igniter if cracks are found Igniter Igniter Cable 0 125 in 3 18 mm to 0 188 4 ...

Страница 31: ...n of this critcal safety component test the switch annually typically when the heater is given a thorough cleaning 1 Remove the high limit switch from the heater 2 With a pliers hold the switch by one of its mounting legs apply a small soft flame only to the sensing portion on the back of the switch Be careful not to melt the plastic housing of the switch when conducting this test 3 Within a minut...

Страница 32: ...VE 1 Disconnect the heater from it s power source 2 Remove the gas supply hose and elbow hose adapter from the heater s gas inlet 3 Open the door to gain access to the components 4 Remove the brown and green wires attached at the top of the gas valve 5 Remove the brass compression nut securing the stainless steel flexible gas line to the outlet of the gas valve 6 Remove the 2 screws securing the l...

Страница 33: ...rol IND Main power supply voltage from control to motor LED Wire connection to red light of selector switch diagnostic MV 24 VAC from ignition control to relay 1 to gas control valve PS2 24 VAC return from air pressure switch back to ignition control PS1 24 VAC from ignition control to air pressure switch W 24 VAC from relay 2 FS No terminal R 24 VAC from ignition controller to thermostat X 24 VAC...

Страница 34: ... pressure measured at the outlet of the gas valve is Burner Manifold Pressure A Preparation 1 Obtain two pressure gauges capable of reading up to 35 in W C 2 Disconnect the heater from the electrical supply and close the fuel supply valve to the heater inlet 3 Open the burner access panel 4 Brush or blow off any dust and dirt on or in the vicinity of the gas control valve WARNING Do not disassembl...

Страница 35: ...ng or adjustment is required Proceed to section D 3 If the inlet pressure does not agree with that specified on the dataplate then the regulator controlling gas pressure to the heater requires adjustment 4 If the inlet pressure is correct and the burner manifold pressure does not agree with that specifed on the dataplate then the gas control valve s internal pressure regulator requires adjustment ...

Страница 36: ...35 FRESH AIR MODULE WIRING DIAGRAM ...

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Страница 39: ...5020292 HEATER MOTOR 1 8HP 115V 1100 RPM 1 4A BALL BEARING 574251 HEATER FRESH AIR MODULE CABLE AUDIO CONNECTOR 3 CONTACTS JACK 25IN 574252 HEATER PROBE TEMPERATURE SENSOR 574253 HEATER RELAY 120V SPDT FLANGE MOUNTED 574254 HEATER RELAY 12DCV SPDT FLANGE MOUNTED 574255 HEATER RELAY 24V SPDT FLANGE MOUNTED 574239 HEATER SWITCH AIR PRESSURE W BRACKET 0 12 0 03 W C 570520 FRESH AIR MODULE SWITCH ROCK...

Страница 40: ... replaced before the unit is put back into service 1 Turn off all electrical power before inspection and servicing 2 Check the heat chamber for cracks and blockage 3 Check and clean burners and the igniter from dirt rust and blockage by insects 4 Check venting system for blockage by debris including debris from animals and insects 5 Check the piping for leaks 6 Check and clean fan blades and fan g...

Страница 41: ...Sisu Commercial Products LLC 5801 E 41st St Suite 1005 Tulsa OK 74135 www sisu ee com ...

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