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5.

Heater installation must take into consideration
proper hanging height to allow for clearance of
catching machines, litter spreaders, and any other
equipment used.

6.

Ensure the heater installation does not interfere with
water, gas, or electrical lines.

7. Position the gas hose to prevent any contact with the

tubes, heat relectors, and burner box.

8.

Ensure that all accessories that ship with the heater
have been removed from shipping containers and
installed.  This pertains to gas hose, regulators,
supports, hangers, etc.

9.

This heater requires a regulated gas supply to its gas
inlet :

--

The regulator must be the proper design for the  
application.

--

The regulator must control the inlet pressure to
the heater within the range specified on the
dataplate.

--

Regulators mounted outside must be protected
from adverse weather conditions. 

--

Regulators with pressure relief valves should be
installed outside the building.

--

Regulator installed inside should be vented
outside.

--

Local state and national codes apply to regulator
installation. Refer to NFPA 54, National Fuel Gas
Code, and NFPA 58, Standard for Storage and
Handling of Liquified Petroleum Gas.

10.

Always use pipe joint compound that is resistant to
liquefied petroleum gas and natural gas.

11.

Check all connections for gas leaks using approved
gas leak detectors.  Gas leak testing is performed as
follows: 

--

Check all pipe connections, hose connections,
fittings and adapters upstream of the gas
control with approved gas leak detectors.  

--

In the event a gas leak is detected, check the
components involved for cleanliness and proper
application of pipe compound before further
tightening.  

--

Tighten the gas connections as necessary to
stop the leak.  

--

After all connections are checked and any leaks
are stopped, turn on the main burner.  

--

Stand clear while the main burner ignites to
prevent injury caused from hidden leaks that
could cause flashback.  

--

With the main burner in operation, check all
connections, hose connections, fittings and
joints as well as 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 leaks have been identified and
repaired before proceeding.

12.

Install a sediment trap at the gas valve inlet to
prevent foreign materials (pipe compound, pipe
chips and scale) from entering the gas valve.  Debris
blown into the gas valve may cause that valve to
malfunction resulting in a serious gas leak that
could result in a possible fire or explosion causing
loss of products, building or even life.  A properly
installed sediment trap will keep foreign materials
from entering the gas valve and protect the safe
functioning of that important safety component.  

13.

Any heater connected to a piping system must have
an accessible, approved manual shut off valve
installed within six feet (6 ft.) of the heater it serves.

14.

Install the proper gas supply line to assure proper
functioning of the heaters.  Consult your fuel gas
supplier, or the L.B. White Co., Inc. for proper line
sizing and installation.

15.

Light according to instructions on heater or within
Owner’s Manual.

16.

The heater is designed for L.P. vapor withdrawal or
natural gas only.  Do not use this heater in a
propane liquid withdrawal system.  Do not permit
propane in liquid form to enter the heater at any
time.

17.

The corrosive atmosphere present in animal
confinement buildings can cause component failure
or heater malfunction.  The heater should be
periodically inspected and cleaned in accordance
with the Maintenance and Cleaning Instructions in
this manual.  Make sure that livestock is protected
by a back up alarm system that limits high and low
temperatures and also activates appropriate alarms.

18.

Take time to understand how to operate and
maintain the heater using the owner’s manual.
Make sure you know how to shut off the gas supply
to the building and to the heater.  Contact your gas
supplier if you have any questions.

19.

Any defects found in performing any of the service
procedures must be eliminated and defective parts
replaced immediately.  Retest the heater before
placing it back into service.

20.

D o   n ot   exc e e d   i np u t   r a t i n g   s t a mp e d   o n   t h e
dataplate of the heater.  Do not exceed the burner
manifold pressure stated on the dataplate.  Do not
use an orifice size different than specified for the
specific input rating of this heater, fuel type
configuration and altitude.

9

WARNING

Fire and Explosion Hazard

Do not use open flame (matches, torches, candles,
etc.) in checking for gas leaks.  

Use only approved leak detectors.  

Failure to follow this warning can lead to fires or
explosions.

Fires or explosions can lead to property damage,
injury or death.

Summary of Contents for Sentinel AT 100

Page 1: ...ments you may have call us toll free at 800 345 7200 ATTENTION ALL USERS This heater has been tested and evaluated by C S A International in accordance with the requirements of standard ANSI Z83 20 20...

Page 2: ...charge For assistance contact L B White at 800 345 7200 FOR YOUR SAFETY If you smell gas 1 Open windows 2 Don t touch electrical switches 3 Extinguish any open flame 4 Immediately call your gas suppl...

Page 3: ...f the heater or its application The L B White Co Inc has a policy of continuous product improvement It reserves the right to change specifications and design without notice SECTION PAGE General Inform...

Page 4: ...ation Air Required to Support Combustion Minimum Safe Distances of Heater From Nearest Combustible Materials See Fig 1 on page 5 Amp Draw Starting Amps Include Igniter Motor Characteristics 1 02 Tempe...

Page 5: ...LINE WATER LINES FEED LINE INSTALL SENSOR APPROX 15 FT DOWN FROM BURNER BOX SENSOR LITTER 12 18 FIG 2 TEMPERATURE SENSOR LOCATION OR IN PROXIMITY INSIDE WATER LINE SENSOR TO AN IN FEED LINE SENSOR LOC...

Page 6: ...l gas is colorless and the intensity of its odor can fade under some circumstances If there is an underground leak the movement of gas through the soil can filter the odorant Propane gas odor may diff...

Page 7: ...r soft brush or dry cloth to clean the interior of the heater and it s components After external washdown do not operate this heater until it is completely dry In any event do not operate the heater f...

Page 8: ...ng Inlet Air From Attic Use L B White air inlet kit 24950 Drawing Inlet Air Through Side Walls 4 The heater is approved for indoor use only 12 IN MIN FROM INSIDE OF ROOF 12 IN MIN ABOVE INSULATION ROO...

Page 9: ...cannot be stopped Ensure all gas leaks have been identified and repaired before proceeding 12 Install a sediment trap at the gas valve inlet to prevent foreign materials pipe compound pipe chips and s...

Page 10: ...hown in Fig 1 3 From the burner box chain measure the distances shown in Fig 6 Aligning to the center of the burner box discharge hang chains at these points using open eye hooks FIG 5 FIG 6 INITIAL S...

Page 11: ...Clamp bolts must be tight Tighten both bolts firmly Tighten both bolts to 35 ft lbs Finish tightening bolts to 65 ft lbs 3 Slide on hangers and connect to chains 4 Connect and hang remaining tubes F F...

Page 12: ...cap is up against burner box 3 Slide remaining reflectors over tubes Overlap the reflectors 2 3 inches Non notched ends overlap notched ends 4 Attach remaining end cap to last reflector with U clips 5...

Page 13: ...must always be mounted so its vent regardless of location on the regulator is always pointed downward Ensure hose is positioned away from the heater 2 Tighten all connections securely and check for g...

Page 14: ...iring of thermostat as shown or refer to electrical diagram on heater 3 Building Controller Connections See Fig 15 Remove wire nut from yellow and orange wires Connect controller contacts as shown B H...

Page 15: ...for heat the red status LED will come on The motor will start up and run for five 5 seconds This pre purge is a safety feature and a normal operational characteristic prior to ignition taking place A...

Page 16: ...el is closed and securely latched Water spray nozzle shall not discharge within 6 feet of the burner box and its tubes The water pressure does not exceed 45 PSIG for 10 seconds on each side of burner...

Page 17: ...d hangers are secure reflectors do not sag and are properly located 10 Check all gasketing on burner box and fan housing discharge Ensure all is in good condition Replace any gasket material if suspec...

Page 18: ...8 in See Fig 22 2 Clean the electrode and ground rod using emery cloth FIG 22 IGNITER 1 8 IN GAS CONTROL VALVE 1 Brush or blow off any dust in area of the gas control valve 2 Disconnect the gas hose...

Page 19: ...ssary FIG 25 5 When reinstalling the burner ensure larger opening between burner vanes is directed to the access door of the burner box See Fig 26 FIG 26 BURNER ORIFICE MOTOR AND FAN ASSEMBLY 19 NUTS...

Page 20: ...sure switch See Fig 32 Remove respective orifice from switch Hold up to light if blocked clean the orifice Ensure orifices are securely pushed backed into proper location on switch FIG 31 Servicing th...

Page 21: ...l 5 Remove the plug from the connector near the power cord and route the gauge tubing through the connector See Fig 33 Keep the connector s plug FIG 33 6 If connector is occupied by thermostat wiring...

Page 22: ...e has opened to second stage and the gas pressure will increase Verify second stage gas pressure according to dataplate If different the HI heat regulator must be adjusted Turn clockwise or counterclo...

Page 23: ...nostic light is flashing A One Time 25 B Two Times 25 C Three Times 26 D Four Times 26 E Five Times 26 Components should be replaced only after each step has been completed and replacement is suggeste...

Page 24: ...y Check circuit breakers in building electrical system Check power cord for continuity Replace thermostat Are 24 volts supplied from transformer Replace transformer No No No No Yes Are 24 volts suppli...

Page 25: ...r voltage Check electrical supply circuit breakers etc Is proper voltage supplied to heater Yes No Red LED Flashing One Time Differential air pessure switch contacts are closed before fan motor starts...

Page 26: ...ad connected No No Connect high voltage lead Yes A Check high voltage lead for continuity and tight connections Replace if defective B Defective improperly gapped or dirty igniter Replace regap or cle...

Page 27: ...Electrical Connection and Ladder Diagram SINGLE STAGE THERMOSTAT GAS CONTROL 27...

Page 28: ...HI LO TWO STAGE THERMOSTAT GAS CONTROL 28...

Page 29: ...o modulate from a first stage minimum heat position to a second stage maximum heat position if needed to satisfy the temperature requirements of the building This results in less temperature variation...

Page 30: ...Parts Identification PARTS SCHEMATIC 30 24 35 34 22 36 37 33 32 30 27 23 26 25 50 41 45 29 28 31 49 43 44 38 51 52 14 48 40 42 39 18 15 8 10 5 4 13 11 12 3 6 9 16 20 19 2 46 7 21 1 47 50 50 33 31 5...

Page 31: ...t 19 Spacer 19A Fitting Pressure 19B Copper Pressure Tube with fittings 20 Burner Orifice LP NG 21 Manifold 22 Gas Control Valve Single Stage LP NG Two Stage LP NG 23 Motor 24 Fan Housing 25 Fan Wheel...

Page 32: ...rchase by the end user Warranty is automatic if a component is found defective within 12 months of the date code marked on the part If the defect occurs more than 12 months later than the date code bu...

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