L.B. White AD060 Manual

WORLD PROVIDER - INNOVATIVE HEATING SOLUTIONS
411 Mason Street, Onalaska, WI 54650 • 001-608-783-5691 • 001-608-783-6115 (fax) • www.lbwhite.com
Propane-Vapor Withdrawal, Butane
Propane withdrawal or Natural Gas
Guardian
Agricultural Animal
Confinement Building
Brood Heater
AD060
AD100
AD250
AD325
17.6 kW
29.3 kW
73.3 kW
95.3 kW
Owner’s Manual and Instructions
View this manual online at www.lbwhite.com
SEE ASSEMBLY
INSTRUCTIONS
INSIDE
Please refer to important
elevation information on
inside cover.
Attention
This brood heater has been
designed and developed as
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brood heater for the heating of
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buildings, and is approved for
indoor or outdoor mounting. If
you are considering using this
product for any application
other than it’s intended use,
contact your local agent or the
L. B. White Company, LLC in
the U.S.A. at 001-608-783-
5691.
www.lbwhite.com
Congratulations!
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heater available.
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the most experienced manufacturer of brood heating products
using state-of-the-art technology.
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and welcome any suggestions or comments you may have...
contact us toll free at 001-608-783-5691, or email us at
customerser[email protected].
SCAN THIS
with your smartphone or
visit http://i.youku.com/lbwhite
to view maintenance
videos for L.B.White heaters.*
* Requires an app like QR Droid
for Android or for iPhone

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Owner’s Manual • Guardian
2
TABLE OF CONTENTS
%URRG+HDWHU6SHFL¿FDWLRQV............................................................................................ 4
General Information......................................................................................................... 5
Safety Precautions.......................................................................................................... 6
Installation Instructions
General............................................................................................................................ 9
Air Diverter Installation Instructions................................................................................. 11
Hanging Installation Instructions...................................................................................... 11
Sediment TrapAssembly Instructions ............................................................................. 12
Thermostat Installation Instructions................................................................................. 12
Manual Shut-Off Valve, Hose and RegulatorAssembly Instructions............................... 12
Start-Up Instructions........................................................................................................ 13
Shut-Down Instructions................................................................................................... 13
Cleaning Instructions....................................................................................................... 14
Maintenance Instructions................................................................................................. 15
Service Instructions
General....................................................................................................................... 16
Motor & FanAssembly ............................................................................................... 16
Air Proving Switch ...................................................................................................... 17
Flapper (Sail)AD325.................................................................................................. 17
Igniter & Flame SensorAssembly .............................................................................. 18
High Limit Switch........................................................................................................ 19
 *DV&RQWURO9DOYHDQG%XUQHU2UL¿FH......................................................................... 21
Ignition Control ........................................................................................................... 21
Transformer................................................................................................................ 22
Gas Pressure Checks................................................................................................. 22
Troubleshooting Guide.................................................................................................... 24
Electrical Connection and Ladder Diagram..................................................................... 29
Brood Heater Component Function................................................................................. 30
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Warranty Policy ,Replacement Parts and Service........................................................... 40
WARNING
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between 0 and 610 m above sea level.
If operated at higher elevations the product will not function correctly and may
function in an unsafe nature.
Products providing proper operation for alternate elevations may be available.
If you require a high elevation product, did not specify when ordering, and/or the
box this unit came in does not have an alternate altitude designation sticker please
contact technical support.

Guardian Brood Heaters
Owner’s Manual • Guardian
3
WARNING
FIRE, BURN, INHALATION, AND
EXPLOSION HAZARD
Ŷ.((362/,'&20%867,%/(6$6$)(',6-
TANCE AWAY FROM THE BROOD HEATER.
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PAPER PRODUCTS, FEATHERS, STRAWAND
DUST.
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SPACES WHICH CONTAIN OR MAY CONTAIN
VOLATILE OR AIRBORNE COMBUSTIBLES.
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INCLUDE PIT GASES, GASOLINE, SOLVENTS,
PAINT THINNER, DUST PARTICLES OR UN-
.12:1&+(0,&$/6
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MAY RESULT INA FIRE OR EXPLOSION.
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PROPERTY DAMAGE, PERSONAL INJURY OR
DEATH.
FOR YOUR
SAFETY
If you smell gas:
1. Open windows.
2. Don’t touch electrical
switches.
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4. Immediately call your gas
supplier.
FOR YOUR
SAFETY
Do not store or use gasoline
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and liquids in the vicinity of
this or any other appliance.
GENERAL HAZARD WARNING
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THIS BROOD HEATER CAN RESULT IN:
— DEATH
— SERIOUS BODILY INJURY OR BURNS
— PROPERTY DAMAGE OR LOSS FROM FIRE OR EXPLOSION
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POISONING
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SHOULD USE OR SERVICE THIS BROOD HEATER.
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WEBSITE, OR FORASSISTANCE, CONTACT L.B. WHITEAT 001-608-783-5691.
WARNING
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BROODHEATER.
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BROOD HEATER INLET CAN CAUSE FIRES OR EXPLOSIONS.
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DAMAGE.
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HEATER INLET MAY CAUSE IMPROPER COMBUSTION.
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INGAND THEREFORE SERIOUS INJURY OR DEATH.
WARNING
FIRE AND EXPLOSION HAZARD
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RESULT INA FIRE OR EXPLOSION.
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Guardian Brood Heaters
www.lbwhite.com
Owner’s Manual • Guardian
4
Specifications
AD060 AD100 AD250 AD325
MaximumInputperhour (kW) 17.6 29.3 73.3 95.3
Ventilation Air Required to Support Combustion
(m3/hour)
408 680 1,869 2,888
Burner Manifold Pres-
sure (kPa/mbar/Inches
W.C.)
Propane Gas 2.50/25.5/10.0 N/A
Natural Gas 1.0/10.0/4.0 0.87/8.7/3.5
Butane/Propane 2.00/20.0/8.0 2.24/22.4/9.0 N/A
Gas Supply Pressure
Acceptable at the inlet
of the brood heater for
purpose of input adjust-
ment (kPa/mbar/Inches
W.C.)
Propane
Gas
MAX. 3.40/34.0/13.5
MIN. 2.74/27.4/11.0
Natural Gas MAX. 3.40/34.0/13.5
MIN. 1.75/17.5/7.0
Butane/
Propane
MAX. 3.40/34.0/13.5 N/A
MIN. 2.74/27.4/11.0 N/A
MotorCharacteristics
(Watts/RPM)
Ball Bearing
50/1450 150/1300 186/1150 373/950
Electrical Supply
(Volts/Hz/Phase)
220-240/50/1 220-240/50/1
230/60/1
220-240/50/1
Amp Draw Starting 1.2 2.0 3.5 (220-240/50/1)
4.5 (230/60/1)
5.4
Continuous 0.4 1.2 2.6 (220-240/50/1)
3.5 (230/60/1)
2.6
Dimensions LxWxH (cm) 54x36x46 75x36x46 78x46x72 91.5x56.5x76
Minimum safe distances
from nearest combus-
tible materials
Top 0.3m
Sides 0.3m
Back 0.3m
BlowerOutlet 1.83m
Gas Supply Propane Gas Supply - 1.83m
Natural Gas Supply - N/A
Gas Consumption
per hour
Propane Gas (kg) 1.26 2.10 5.26 N/A
Natural Gas (m3) 1.70 2.83 7.08 9.20
Butane/Propane (kg) 1.26 2.10 5.26 N/A
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the heater is operating on propane fuel, the heating rate of the unit will be approximately 11% less than
fuel rated output.

Guardian Brood Heaters
Owner’s Manual • Guardian
5
This Owner’s Manual includes all accessories
commonly used on this brood heater. However,
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accessories may not be included.
When calling for technical service assistance, or
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available. This information is contained on the data-
plate. The dataplate is located on the interior of either
the burner end or motor end door.
This manual will instruct you in the operation and
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this manual with you so that you fully understand the
brood heater and how it functions.
The gas supply line installation, installation of the
brood heater, and repair and servicing of the brood
heater requires continuing expert training and
knowledge of gas brood heaters and should not be
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Adetailed Installation and Service Guide is available,
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local L.B. White distributor, dealer or the L.B. White
Company.
General Information
Contact your local L.B. White distributor or the L.B.
White Company, LLC for assistance, or if you have
any questions about the use of the equipment or its
application.
The L.B. White Company, LLC has a policy of con-
tinuous product improvement. It reserves the right to
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Guardian Brood Heaters
www.lbwhite.com
Owner’s Manual • Guardian
6
Propane gas and natural gas have man-made odor-
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If a gas leak occurs, you should be able to smell the
fuel gas .
THAT’S YOUR SIGNALTO GO INTO IMMEDIATE
ACTION!
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gas. Do not operate any electrical switches. Do not
pull any power supply or extension cords. Do not
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use your telephone.
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area immediately.
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low areas. When you have reason to suspect a
propane leak, keep out of all low areas.
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the building or area.
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gas supplier.
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air out the building and area before you return.
Properly trained service people must repair the
leak, check for further leakages, and then relight
the heater for you.
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cannot smell the odor of the man-made chemi-
cal added to propane or natural gas. You must
determine if you can smell the odorant in these
fuel gases.
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natural gas. Local propane gas dealers and your
local natural gas supplier (utility) will be more than
happy to give you a “scratch and sniff” pamphlet.
Use it to become familiar with the fuel gas odor.
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around an odor for a period of time can affect your
sensitivity to that particular odor. Odors present in
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odor.
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orless and the intensity of its odor can fade under
some circumstances.
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levels. Since propane gas is heavier than air, there
may be more odor at lower levels.
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continue to detect any gas odor, no matter how
small, treat it as a serious leak. Immediately go into
action as discussed previously.
Fuel Gas Odor
Safety Precautions
Odor Fading - No
Odor Detected
WARNING
Asphyxiation Hazard
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heater being used.
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the L.B. White Company to determine combustion air ventilation requirements of the brood heater.
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Symptoms of carbon monoxide poisoning can include headachaches, dizziness and diffuculty
breathing.
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death.

Guardian Brood Heaters
Owner’s Manual • Guardian
7
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these odors. (Reference Fuel Gas Odor and Odor
Fading sections above.
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service of LPG and natural gas brood heaters, then
do not attempt to light the heater, perform service
or repairs, or make any adjustments to the brood
heater on the fuel system.
Even if you are not properly trained in the service and
repair of the brood heater, ALWAYS be consciously
aware of the odors of LPG and natural gas.
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the brood heater’s joints; i.e. hose, connections,
etc., is a good safety practice under any conditions.
If you smell even a small amount of gas, CONTACT
YOUR FUEL GAS SUPPLIER IMMEDIATELY. DO
NOT WAIT!
1. Do not attempt to install, repair, or service this
brood heater or the gas supply line unless you
have continuing expert training and knowledge of
gas heaters.
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tion of this equipment are as follows:
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\RXPXVWKDYHVXI¿FLHQWWUDLQLQJDQGH[SHULHQFH
WRKDQGOHDOODVSHFWVRIJDV¿UHGEURRGKHDWHU
installation, service and repair. This includes the
task of installation, troubleshooting, replacement
of defective parts and testing of the brood heater.
You must be able to place the brood heater into a
continuing safe and normal operating condition.
You must completely familiarize yourself with each
model brood heater by reading and complying with
the safety instructions, labels, Owner’s Manual,
etc., that is provided with each heater.
E7REHDTXDOL¿HGJDVLQVWDOODWLRQSHUVRQ\RXPXVW
KDYHVXI¿FLHQWWUDLQLQJDQGH[SHULHQFHWRKDQGOH
all aspects of installing, repairing and altering gas
lines, including selecting and installing the proper
equipment, and selecting proper pipe and tank size
to be used. This must be done in accordance with
all local, state and national codes as well as the
manufacturer’s requirements.
2.All installations and applications of L.B. White
brood heaters must meet all relevant local, state
and national codes. Included are LPG, natural gas,
electrical, and safety codes. Your local fuel gas
VXSSOLHUDORFDOOLFHQVHGHOHFWULFLDQWKHORFDO¿UH
department or similar government agencies, or
your insurance agent can help you determine code
requirements.
3. Do not move, handle, or service the brood heater
while in operation or connected to a power or fuel
supply.
4. This brood heater may be installed in areas
subject to washdown. This brood heater may only
be washed on the external case assembly—see
Cleaning Instructions. Do not wash the interior
of the brood heater. Use only compressed air,
soft brush or dry cloth to clean the interior of the
brood heater and it’s components.After external
washdown, do not operate this brood heater until
it is completely dry. In any event, do not operate
the brood heater for at least one hour after external
washdown.
5. For safety, this brood heater is equipped with a
manual reset high-limit switch and an air proving
switch. Never operate this brood heater with any
safety device that has been bypassed. Do not op-
erate this brood heater unless all of these features
are fully functioning.
6. Do not operate the brood heater with its door open
or panel removed.
7. Do not locate fuel gas containers or fuel supply
hoses anywhere near the blower outlet of the
brood heater.
8. Do not block air intakes or discharge outlets of the
brood heater. Doing so may cause improper com-
bustion or damage to brood heater components
leading to property damage or animal loss.
9. The hose assembly shall be visually inspected on
an annual basis. If it is evident there is excessive
abrasion or wear, or if the hose is cut, it must be
replaced prior to the brood heater being put into
operation. The hose assembly shall be protected
from animals, building materials, and contact with
hot surfaces during use. The replacement hose
DVVHPEO\VKDOOEHWKDWVSHFL¿HGE\WKHPDQXIDF-
turer. See parts list.
Attention - Critical
Points to Remember!

Guardian Brood Heaters
www.lbwhite.com
Owner’s Manual • Guardian
8
10. Check for gas leaks and proper function upon
brood heater installation, before building repopu-
lation or when relocating.
11. This brood heater should be inspected for proper
RSHUDWLRQE\DTXDOL¿HGVHUYLFHSHUVRQEHIRUH
building repopulation and at least annually.
12.Always turn off the gas supply if the brood heater
is not going to be used.
13. This brood heater is wired for a three-wire elec-
trical system. There is a hot lead, neutral lead
and ground lead. The brood heater may or may
not incorporate a plug in the power cord to the
brood heater and the plug may or may not incor-
porate a pin for the ground wire. In any case, the
brood heater must be properly connected into
a grounded electrical supply using the ground
lead in the power cord. Failure to use a properly
grounded electrical supply can result in electrical
shock, personal injury or death.
14. Direct ignition brood heaters will make up to
three trials for ignition. If ignition is not achieved,
the control system will lock out the gas control
valve. If gas is smelled after system lock out
has occurred, immediately close all fuel supply
valves. Do not relight until you are sure that all
gas that may have accumulated has cleared
away. In any event, do not relight for at least 5
minutes.
15. In a hanging type installation, rigid pipe or
copper tubing coupled directly to the brood
heater may cause gas leaks during movement,
and therefore must not be used. Use only gas
hose assemblies that are rated and approved
for L.P.gas and natural gas in a hanging type of
installation.
16. Installations not using the gas hose supplied with
this appliance must connect dimensionally using
American National Standard Wrought Steel and
Wrought Iron Pipe B36/10-1970. (Aluminum pip-
ing or tubing shall not be used.) Copper tubing
when used for conveying natural gas, shall be
internally tinned or equivalently treated to resist
sulphur.

Guardian Brood Heaters
Owner’s Manual • Guardian
9
the ground or to a height that would prevent
lockage of heater’s air inlet.
7. The brood heater’s gas regulator (with pressure
relief valve) should be installed outside of build-
ing. Any regulators inside the buildings must
be properly vented to the outside. Local, state
and national codes always apply to regulator
installation.
8.All gas pressure regulators must be installed in
strict accordance with the manufacturer’s safety
instructions. These instructions accompany each
regulator.
9. Insure that all accessories that ship within the
brood heater have been removed from inside of
brood heater and installed. This pertains to air
diverters, hose, regulators, etc.
10. Make certain that a sediment trap is installed 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
LQDSRVVLEOH¿UHRUH[SORVLRQFDXVLQJORVV
of products, building or even life. Aproperly
installed sediment trap will keep foreign materi-
als from entering the gas valve and protect
the safe functioning of that important safety
component.
11. Any brood heater connected to a piping system
must have an accessible, approved manual
shut off valve installed within 1.83 meters of the
brood heater it serves.
12. Check all connections for gas leaks using ap-
proved gas leak detectors. Gas leak testing is
performed as follows:
General Installation Instructions
INSTALLATION INSTRUCTIONS
WARNING
Fire or Explosion Hazard
Can cause property damage, severe injury or death.
Ŷ'LVFRQQHFWSRZHUVXSSO\EHIRUHZLULQJWRSUHYHQW
electrical shock or equipment damage.
Ŷ7RDYRLGGDQJHURXVDFFXPXODWLRQRIIXHOJDVWXUQ
off gas supply at the appliance service valve before
starting installation, and perform gas leak test after
completion of installation.
Ŷ'RQRWIRUFHWKHJDVFRQWURONQRE8VHRQO\\RXU
hand to turn the gas control knob. Never use any
tools. If the knob will not operate by hand, the
FRQWUROVKRXOGEHUHSODFHGE\DTXDOL¿HGVHUYLFH
technician. Force or attempted repair may result in
¿UHRUH[SORVLRQ
1. Read all safety precautions and follow L. B. White
recommendations when installing this brood
heater. If during the installation or relocating of
brood heater, you suspect that a part is damaged
RUGHIHFWLYHFDOODTXDOL¿HGVHUYLFHDJHQF\IRU
repair or replacement.
2. Make sure the brood heater is properly positioned
before use and is hung level, using a level.
Observe and obey all minimum safe distances of
the heater to the nearest combustible materials.
Minimum safe distances are given on the brood
heater nameplate and on page 4 of this manual.
3. Ensure the brood heater has the proper second
stage gas regulator for the application. Aregulator
must be connected to the gas supply so that gas
pressure at the inlet to the gas valve is regulated
ZLWKLQWKHUDQJHVSHFL¿HGRQWKHEURRGKHDWHU¶V
dataplate at all times. Contact your gas supplier, or
the L. B. White Co., Inc. if you have any questions
4. Do not exceed input rating stamped on the
dataplate of the brood heater. Do not exceed the
burner manifold pressure stated on the dataplate.
'RQRWXVHDQRUL¿FHVL]HGLIIHUHQWWKDQVSHFL¿HG
IRUWKHVSHFL¿FLQSXWUDWLQJRIWKLVKHDWHUIXHOW\SH
FRQ¿JXUDWLRQDQGDOWLWXGH
5. The brood heater may be installed either indoors
or outdoors. When the brood heater is mounted
outdoors, use only the ductwork supplied in the
outdoor mounting kit.
6. For brood heaters intended for outdoor installation,
the heater is to be installed at least 46 cm above
WARNING
Fire and Explosion Hazard
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candles, etc.) in checking for gas leaks.
Ŷ8VHRQO\DSSURYHGOHDNGHWHFWRUV
Ŷ)DLOXUHWRIROORZWKLVZDUQLQJFDQOHDGWR¿UHV
or explosions.
Ŷ)LUHVRUH[SORVLRQVFDQOHDGWRSURSHUW\GDP-
age, personal injury or loss of life.

Guardian Brood Heaters
www.lbwhite.com
Owner’s Manual • Guardian
10
-- Check all pipe connections, hose connections,
¿WWLQJVDQGDGDSWHUVXSVWUHDPRIWKHJDVFRQWURO
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.
-- Furthermore 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
FDXVHÀDVKEDFN
-- With the main burner in operation, check all
FRQQHFWLRQVKRVHFRQQHFWLRQV¿WWLQJVDQGMRLQWV
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.
(QVXUHDOOJDVOHDNVKDYHEHHQLGHQWL¿HGDQG
repaired before proceeding.
$TXDOL¿HGVHUYLFHDJHQF\PXVWFKHFNIRUSURSHU
operating gas pressure upon installation of the
brood heater.
14. Light accordance to instructions on the brood
heater or within owner’s manual.
15. It is extremely important to use the proper size
and type of gas supply line to assure proper
functioning of the brood heater. Contact your
fuel gas supplier for proper line sizing and
installation.
7KLVEURRGKHDWHULVFRQ¿JXUHGIRUXVHZLWK
either LPG vapor withdrawal only. Do not
use the brood heater in an L.P. gas liquid
withdrawal system or application. If you are
in doubt, contact the L. B. White Co., Inc.
17. Eventually, like all electrical/mechanical
devices, the thermostat can fail. Thermostat
failure may result in either an underheating
or overheating condition which may damage
critical products and/or cause animal injury
or death. Critical products and/or animals
should be protected by a separate back-up
control system that limits high and low
temperatures and also activates appropriate
alarms.
18. Take time to understand how to operate
and maintain the brood heater by using this
Owner’s Manual. Make sure you know how
to shut off the gas supply to the building and
also to the individual brood heater. Contact
your fuel gas supplier if you have any ques-
tions.
19.Any defects found in performing any of the
service or maintenance procedures must
be eliminated and defective parts replaced
immediately. The brood heater must be
UHWHVWHGE\SURSHUO\TXDOL¿HGVHUYLFHSHUVRQ-
nel before placing the brood heater back
into use.

Guardian Brood Heaters
Owner’s Manual • Guardian
11
(Appearance of the outlet on brood
heater may vary from model to model.)
1. Outlet to provide direction to the heated air as it
exits the brood heater. Installation options include
installing the diverters in such a way as to broadly
NOTCHES IN MOUNTING TABS distribute the air
LQWZRGHJUHHSDWKVRUWRIRFXVWKHDLUÀRZLQ
one 45 degree direction. See Fig. 1.
2. The air diverters may require hand forming prior
to installation. Make 90 degree bends utilizing the
performations provided. The diverter should then
have the shape shown in Fig. 1.
3. The air diverter’s tabs on each half will pop
into the blower outlet between the inside of the
case assembly and the blower housing outlet.
If the notched tabs do not pop into the blower
outlet, loosen (do not remove) the blower outlet
screws. Doing this provides a gap into which you
can insert the tabs. Retighten the screws after
installation.
FIG. 1
TABS
DIVERTER
HALVES
OUTLET
SCREWS
FORMED
OUTLET GUARD
NOTCHES IN MOUNTING TABS
AlternatveAir DIverter Installations
Air Diverter Installation
Instructions
(Must be ordered separately)
1.Assemble according to the illustration and tighten all
eyebolts securely. See Fig. 2.
FIG. 2
EYEBOLT
NUT
FLAT WASHER
CAGE NUT
CHAIN
CASE TOP
2. Be sure the brood heater is securely fastened and
is hanging level. (Check crosswise and lengthwise
using a level).
3. See Fig. 3 for typical indoor installation. In any
DQLPDOFRQ¿QHPHQWEXLOGLQJFRQVLGHUDWLRQPXVWEH
given to making sure the brood heater is located
away from the livestock so that livestock can-
not knock the brood heater, tear it loose from its
mounting, or damage the brood heater or its gas
supply line in any way. Make sure you observe and
obey minimum clearance distances to combustible
PDWHULDOVDVVWDWHGLQWKHVSHFL¿FDWLRQVHFWLRQRIWKLV
owner’s manual and on the brood heater itself.
FIG. 3
NOTE: REGULATORS SHOULD ALWAYS BE MOUNTED OUTDOORS. IF
CIRCUMSTANCES FORCE INSTALLING THE REGULATOR INDOORS,
THE REGULATOR'S VENT MUST BE VENTED OUTDOORS USING VENT
LINE NO SMALLER THAN VENT OPENING.
VENT OF REGULATOR MUST
POINT DOWN AND REGULATOR
MUST BE VENTED OUTDOORS
MANUAL SHUT-OFF VALVE
CAN BE INSTALLED BEFORE
THE REGULATOR, UNDER
THE EAVE OF THE BUILDING,
OR AFTER THE REGULATOR
INSIDE THE BUILDING.
OPTIONAL INDOOR
REGULATOR
MOUNTING LOCATION
GAS HOSE
THERMOSTAT
CORD
YOKE
BROOD
HEATER
THERMOSTAT 0.3 m
BLACK PIPE
THROUGH WALL
VENT LINE
WALL OUTLE
T
POWER CORD
SEDIMENT
TRAP
WALL
CHAIN OR CABLE
0.3 m

Guardian Brood Heaters
www.lbwhite.com
Owner’s Manual • Guardian
12
Assemble the tee, nipples and cap together and
tighten securely. See Fig. 4. The sediment trap
assembly must always be mounted in a vertical
position. Make sure pipe thread compound that is
resistant to both L.P. gas and natural gas is used
in making all connections. Check all connec-
tions for gas leaks using approved gas
leak detectors.
FIG. 4
Sediment Trap Assembly
Thermostat Installation
(Must be ordered separately)
7R&RQQHFWWKH'LUHFW:LUHG7KHUPRVWDW.LWWRWKH
Control Box on the Brood Heater:
a. Open the control box.
b. Remove the yellow wire connected between the
24 volt output of the transformer and terminal W
of the ignition control.
c. Remove the plastic hole plug at the back or
bottom of the control box. Run the wiring of the
thermostat kit through this hole.
d. Connect the black lead of the thermostat kit to
the 24 volt output terminal of the transformer.
e. Connect the white lead of the thermostat kit to
terminal W of the ignition control.
f. Install the strain relief (supplied on thermostat
cordset) around the cord at the entry hole of the
control box.
g. Close and latch the control box.
h. Start the brood heater and check for proper
operation.
NIPPLE
TEE
NIPPLE
CAP
TO GAS CONTROL
VALVE INLET
Manual Shut-Off Valve,
Hose and Regulator
Assembly
1.Always use approved pipe thread compound
suitable for use with L.P. gas or natural gas on the
threaded connections.
2.Assemble the components together according to
Fig. 5. This view is to show general assembly of
the components only. The regulator must always
be mounted so its vent, regardless of location on
the regulator, is always pointed downward.
3. Tighten all connections securely.
4. Check all connections for gas leaks
using approved gas leak detectors.
FIG. 5
REGULATOR
NIPPLE
VALVE, MANUAL
SHUT-OFF
GAS HOSE
ADAPTER
SEDIMENT TRAP
TO CONTROL
VALVE INLET
REGULATOR VENT
GAS FLOW

Guardian Brood Heaters
Owner’s Manual • Guardian
13
Start-Up Instructions
Follow steps 1 - 6 on initial start-up after brood
KHDWHULQVWDOODWLRQE\DTXDOL¿HGJDVKHDWHUVHUYLFH
person. For normal start-up, simply turn thermostat
above room temperature. The brood heater will start.
1. Open all manual fuel supply valves and check for
gas leaks using approved leak detectors. The gas
control valve on the brood heater has a manual
shut-off feature incorporated into the valve as-
sembly. Make sure the indicator on the valve is
turned to the “on” position. See Fig. 6.
FIG. 6
ON
OFF
2. Connect the electrical cord to an approved
electrical outlet.
3. Set the thermostat (if supplied) to desired room
temperature.
4. This brood heater includes a direct ignition control
module for purposes of controlling the timing
of the ignition process of the heater as well as
monitoring of the safety functions. The control
module is contained within the control enclosure.
On the control module is a red light emitting diode
(LED). This LED indicates the status of the brood
heater. The LED is visible external of the control
enclosure through the viewing window.A constant
light from the LED is an indicator that the brood
KHDWHULVIXQFWLRQLQJFRUUHFWO\$Q\ÀDVKSDWWHUQ
by the LED is indicative that there is a problem
in the operation of the brood heater. Refer to the
troubleshooting decal on the access panel at the
fan motor end of the brood heater for assistance
LQWURXEOHVKRRWLQJ2QO\TXDOL¿HGDQGSURSHUO\
trained personnel shall service or repair the brood
heater.
5. On a call for heat, the motor will start up and run
IRU¿YHVHFRQGV7KLV³SUHSXUJH´LVDVDIHW\
feature and a normal operational characteristic
SULRUWRLJQLWLRQWDNLQJSODFH$IWHU¿YHVHFRQGV
the igniter will begin to spark.
NOTE: It is normal for air to be trapped in the gas
hose on new installations. The brood heater may at-
tempt more than one trial for ignition before the air is
¿QDOO\SXUJHGIURPWKHOLQHDQGLJQLWLRQWDNHVSODFH
6. The ignition control will make up to three trials for
ignition. Each trial for ignition will take approxi-
PDWHO\WHQVHFRQGV7KH¿UVWWKUHHWULDOVIRU
ignition will occur within 40 seconds if ignition is not
achieved.A 15 minute “wait period” will then begin
after the third trial for ignition has taken place.
After the 15 minute time span has elapsed, three
more trials for ignition will take place. If ignition is
QRWDFKLHYHGDWWKLV¿QDOWULDOWKHV\VWHPZLOO³ORFN
RXW´DQGDWKUHHÀDVKSDWWHUQZLOOEHLQGLFDWHGE\
the LED.
Shut-Down Instructions
If the brood heater is to be shut down for cleaning,
maintenance or repair, follow steps 1 - 5. Otherwise,
simply turn thermostat to “off” or “no heat” for stan-
dard shut down.
1. Close all manual fuel supply valves.
2. With the brood heater lit, allow heater to burn off
excess fuel in gas supply hose.
3. Turn the indicator on the gas control to “off”.
4. Turn thermostat to “off” or “no heat” position.
5. Disconnect the brood heater from the electrical
supply.

Guardian Brood Heaters
www.lbwhite.com
Owner’s Manual • Guardian
14
Cleaning Instructions
WARNING
Fire, Burn, and Explosion Hazard
Ŷ7KLVEURRGKHDWHUFRQWDLQVHOHFWULFDODQGPH-
chanical components in the gas management,
VDIHW\DQGDLUÀRZV\VWHPV
Ŷ6XFKFRPSRQHQWVPD\EHFRPHLQRSHUDWLYHRU
fail due to dust, dirt, wear, aging, or the
corrosive atmosphere of an animal
FRQ¿QHPHQWEXLOGLQJ
Ŷ3HULRGLFFOHDQLQJDQGLQVSHFWLRQDVZHOODV
proper maintenance are essential to avoid
serious injury or property damage.
1. Before cleaning, shut off all gas supply valves
and disconnect electrical supply.
2. The brood heater should have dirt or dust
removed periodically:
D$IWHUHDFKÀRFNRUEHWZHHQEXLOGLQJUH
population, give the brood heater a general
cleaning using compressed air or a soft brush
on its interior and exterior.At this time, dust off
the motor case to prevent the motor from over-
heating and shutting the brood heater down.
b.At least once a year, give the brood heater a
thorough cleaning.At this time, remove the fan
and motor assembly and brush or blow off the
fan wheel, giving attention to the individual fan
blades.Additionally, make sure the burner air
inlet venturi ports and the throat of the casting
are free of dust accumulation and the area
between the heat chamber top and inside case
is also free of dust.
c. When washing with water, observe and obey
the Warning within these Cleaning Instruc-
tions. This same Warning is also supplied on
the brood heater.
WARNING
This brood heater may be washed only on the
external case assembly provided:
A. The brood heater is disconnected from the
electrical supply.
B.All access panels are securely closed.
C. Water spray nozzle shall not discharge within
1.83 m of the brood heater.
D. The water pressure does not exceed 3.1 BAR
for 10 seconds on each side of the brood
heater.
E. The brood heater is not reconnected to electri-
cal supply for a minimum of 1 hour or until the
brood heater is thoroughly dry.
Improper cleaning of the brood heater can cause
severe personal injury or property damage due to
water and/or cleaning solution:
1. In electrical components, connections and
wires causing electrical shock or component
failure.
2. On gas control components causing corrosion
ZKLFKFDQUHVXOWLQJDVOHDNVDQG¿UHRUH[SOR-
sion from the leak.
Clean internal components of the brood heater
with a soft, dry brush or cloth, or compressed air.

Guardian Brood Heaters
Owner’s Manual • Guardian
15
Maintenance Instructions
BEFORE EACH USE:
Ŷ+DYH\RXUJDVVXSSOLHUFKHFNDOOJDVSLSLQJDQ-
nually for leaks or restrictions in gas lines. Also,
at this time have your gas supplier clean out
the sediment trap of any debris that may have
accumulated.
Ŷ7KHEURRGKHDWHU¶VVXUURXQGLQJDUHDVKDOOEHNHSW
clear and free from combustible materials, gaso-
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Ŷ5HJXODWRUVPXVWEHSHULRGLFDOO\LQVSHFWHGWRPDNH
sure the regulator vents are not blocked. Debris,
insects, insect nests, snow, or ice on a regulator
can block vents and cause excess pressure at the
appliance.
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start-up/shutdown, electrical wiring, diagrams, etc.)
for legibility. Ensure that none are cut, torn, or
otherwise damaged. Any damaged markings must
be replaced immediately by contacting L.B. White
Co., Inc. Markings are available at no cost.
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defects are found.
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Replace any terminals that are corroded.
Ŷ/HDNFKHFNWKHEURRGKHDWHU¶VJDVFRQQHFWLRQV
according to instructions within this manual.
ANNUALLY:
Ŷ+DYH\RXUJDVVXSSOLHUFKHFNDOOJDVSLSLQJDQ-
nually for leaks or restrictions in gas lines. Also,
at this time have your gas supplier clean out
the sediment trap of any debris that may have
accumulated.
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Have your gas supplier check the date codes
on all regulators installed and check delivery
pressures to the appliance to make sure that the
regulator is reliable.
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Refer to instructions within this manual.

Guardian Brood Heaters
www.lbwhite.com
Owner’s Manual • Guardian
16
Service Instructions
1.Close the fuel supply valve to the brood heater
and disconnect the electrical supply before servic-
ing unless necessary for your service procedure.
2.Open side panels for access to brood heater
components.
3.Disconnect the appropriate electrical leads for the
component being replaced.
4.The thermostat, and high limt switch can be
tested by jumpering the suspect part out of the
electrical circuit:
-- Reconnect the electrical supply and open fuel
supply valves.
-- If the brood heater lights, the component is defec-
tive and must be replaced.
-- Do not operate the brood heater with the compo-
nent jumpered. Replace the part immediately.
-- An alternate method for checking the components
is to perform a continuity check.
5.Do not jumper the air proving switch. If jumpered,
the ignition control will not allow heater operation.
Test the air proving switch for continuity. If defec-
tive, replace the switch
WARNING
Burn Hazard
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time after the brood heater has been shut down.
Ŷ$OORZWKHEURRGKHDWHUWRFRROEHIRUHSHUIRUPLQJ
service, maintenance, or cleaning.
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causing injury.
WARNING
Fire and Explosion Hazard
Ŷ'RQRWGLVDVVHPEOHRUDWWHPSWWRUHSDLUDQ\
brood heater components or gas train compo-
nents.
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are found.
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explosions, causing property damage, injury, or
death.
6.For reassembly, reverse the respective service
procedure. Ensure gas connections are tightened
securely.
7.After servicing, start the brood heater to ensure
proper operation. Check for gas leaks with ap-
proved leak detectors.
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DLURUDVRIWGU\UDJ'RQRWXVH¿OHVGULOOV
EURDFKHVHWFWRFOHDQWKHRUL¿FH'RLQJVRPD\
enlarge the hole, causing combustion or ignition
SUREOHPV5HSODFHWKHRUL¿FHLILWFDQQRWEH
cleaned properly.
Fan and Motor Wheel
Assembly
1.Remove the motor mounting plate screws and
lift the fan and motor assembly from the housing.
See Fig. 7,AD250 shown.
2.Loosen the square head set screw(s) on the fan
wheel.
3.Pull the fan wheel from the motor shaft. Use a
wheel puller if necessary.
4.Remove the four (4) nuts securing the motor to
the mounting plate.
FIG. 7
NOTES:
a. Fan wheel to motor mount plate spacing must
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8 before tightening the fan wheel to the motor
shaft.
SCREWS

Guardian Brood Heaters
Owner’s Manual • Guardian
17
0DNHVXUHWKDWVHWVFUHZVRIWKHIDQDUHRQWKHÀDWV
of motor shaft when tightening.
FIG. 8
MOTOR MOUNT PLATE FAN WHEEL
CLEARANCE
MOTOR
Air Proving Switch
The air proving switch is located on the fan housing at
the motor end of the brood heater. It must work properly
to allow an ignition cycle. If the air proving switch
contacts are closed before the igntion control starts the
fan motor, or do not close on a call for heat after the fan
motor starts, ignition will not occur . See Fig. 9a or 9b.
AW060/AW100/AW250 service (Fig. 9a):
-- Remove the two (2) sheet metal screws holding the
switch with bracket to blower housing.
--Remove the assembly by turning the switch so the
paddle on the switch arm can be pulled through the
oblong hole on side of fan housing.
AW325 service (Fig. 9b):
-- Remove the two mounting nuts and slide the switch
from its mounting screws.
FIG. 9a
FIG. 9b
Flapper (Sail)
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discharge, works in conjunction with the air proving
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by the fan and motor before allowing an ignition cycle to
continue. See Fig. 10.
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proving switch and ignition will not occur.
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the fan housing and that it is free of dust and other
debris.
FIG. 10
REMOVE COVER
(AD325 ONLY)
REMOVE NUTS
AIR PROVING SWITCH
AD060/AD100; 6mm
AD250/325; 3 mm

Guardian Brood Heaters
www.lbwhite.com
Owner’s Manual • Guardian
18
Igniter and Flame Sensor
Assembly
• Refer to Fig. 11 (AD100/250/325) or Fig. 12 (AD060)
for servicing of the igniter assembly.
• The igniter/sensor assembly may require cleaning due
to accumulations of dust and dirt over a period of time,
affecting its ability to ignite fuel gas and sense burner
ÀDPH&OHDQLQJZLOOUHTXLUHLJQLWHUVHQVRUUHPRYDO
-- If spark appears to be weak, rub the igniter electrode
with emery cloth or steel wool to remove any buildup.
-- If the spark appears strong but the brood heater
cycles off, rub the sensor rod with emery cloth or steel
wool to remove any build-up.
• Ensure the igniter gap to burner is 4 mm and the
igniter tip is positioned over the burner port according
to the illustration below.
FIG. 11
SENSOR IGNITER
4 mm
HEAT CHAMBER FACE
BURNER
IGNITER LEAD
SENSOR LEAD
IGNITER / SENSOR
ENCLOSURE
TO REMOVE IGNITER / SENSOR WITH ENCLOSURE
REMOVE SCREW, LIFT ASSEMBLY
FROM ITS MOUNTING SLOTS
TO GAP IGNITER LOOSEN SCREW.
MOVE ENCLOSURE UP OR DOWN
TO ALLOW PROPER POSITIONING
OF IGNITER TO BURNER.
FIG. 12
BURNER
4 mm
IGNITER
FLAME SENSOR
REMOVE SCREW (17,6 kW MODEL ONLY)
REMOVE SCREWS
IGNITER/SENSOR
ENCLOSURE
BURNER
HEAT CHAMBER

Guardian Brood Heaters
Owner’s Manual • Guardian
19
Manual Reset High Limit
Switch
WARNING
Fire Hazard
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limit switch bypassed.
Ŷ2SHUDWLQJWKHEURRGKHDWHUDE\SDVVHGKLJK
limit switch may lead to overheating, possibly
UHVXOWLQJLQD¿UHZLWKVXEVHTXHQWGDPDJHWR
the brood heater, building damage, or loss of
livestock.
This brood heater uses a high limit heat switch for
the purpose of over heat protection. It is connected
between the ignition control and the gas control
valve.
The switch has normally closed contacts. If an over-
heat condition occurs, the switch contacts will open,
thereby opening the circuit to the gas control valve.
ModelAD060/AD100/AD250: The high limit switch is
located on the heat chamber, See Fig. 13a and 13b.
ModelAD325: The high limit switch is located on
the fan housing side panel at the motor end of the
heater. See Fig. 14a and 14b.
FIG. 13a
FIG. 13b
HIGH LIMIT SWITCH
(AD100/AD250)
FIG. 14a
FIG. 14b
The high limit switch should be tested a minimum of
once per year when the heater is given a thorough
cleaning.
1. Remove the switch. Holding the switch by one of its
PRXQWLQJOHJVDSSO\DVPDOOÀDPHRQO\WRWKHVHQV-
ing portion on the back of the switch. See Fig. 15.
Do not melt the plastic housing of the switch when
conducting this test.
2. Within a minute, you should hear a pop coming
from the switch, which indicates the contacts of the
switch have opened. Check for lack of electrical
continuity across the switch terminals to verify
contacts have opened.
SWITCH
(AD325)
SWITCH
(AD060)
REMOVE COVER

Guardian Brood Heaters
www.lbwhite.com
Owner’s Manual • Guardian
20
3.Allow the switch cool down for about a minute before
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4. Check for electrical continuity across the switch
terminals to make sure the contacts have closed.
5. Reinstall the switch back into the brood heater. Re-
connect the brood heater to its electrical supply. Start
the brood heater and check for proper operation.
FIG. 15
RESET BUTTON
SENSING
SURFACE
TERMINAL
FLAME
MOUNTING
LEG