VALCOBABY Heat Rite Manual

17.6 KW
Heat Rite Direct Spark
65.9 KW
IGNITION OUTPUT
MODEL TYPE (KW) FUEL
Models are
available in
either L.P. Gas
Vapor Withdrawal
or Natural Gas
Configurations.
Congratulations!
You have purchased the finest agricultural building heater available.
We, at VAL-CO, thank you for your confidence in our products and welcome
any suggestions or comments you may have...call us at 419-678-8731.
Owner's Manual and Instructions
Agricultural Animal Confinement Building Heaters
ATTENTION ALL USERS
This heater has been designed and developed specifically for use as a direct-fired
circulating heater for agricultural animal confinement buildings. The heater is
approved for indoor use or outdoor use with the approved outdoor air handling kit.
If you are considering using this product for any application other than its intended
use, then please contact your fuel gas supplier, or VAL-CO.
F150-81509
210 East Main Street, P.O. Box 117, Coldwater, OH 45828 USA ■[phone]

WARNING
Fire and Explosion Hazard
■Not for home or recreational vehicle use.
■Installation of this heater in a home or
recreational vehicle may result in a fire or
explosion.
■Fire or explosions can cause property
damage or loss of life.
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 supplier.
FOR YOUR SAFETY
Do not store or use gasoline or other
flammable vapors and liquids in the vicinity
of this or any other appliance.
WARNING
Fire and Explosion Hazard
■Keep solid combustibles a safe distance
away from the heater.
■Solid combustibles include wood or paper
products, feathers, straw, and dust.
■Do not use the heater in spaces which
contain or may contain volatile or airborne
combustibles.
■Volatile or airborne combustibles include
gasoline, solvents, paint thinner, dust
particles or unknown chemicals.
■Failure to follow these instructions may
result in a fire or explosion.
■Fire or explosions can lead to property
damage, personal injury or loss of life.
GENERAL HAZARD WARNING
■Failure to comply with the precautions and instructions provided with this heater, can result
in:
— Death
— Serious bodily injury or burns
— Property damage or loss from fire or explosion
— Asphyxiation due to lack of adequate air supply or carbon monoxide poisoning
— Electrical shock
■Read this Owner’s Manual before installing or using this product.
■Only properly-trained service people should repair or install this heater.
■Save this Owner’s Manual for future use and reference.
■Owner’s Manuals and replacement labels are available at no charge. For assistance, contact
VAL-CO at 419-678-8731.
WARNING
■Proper gas supply pressure must be provided to the inlet of the heater.
■Refer to rating plate for proper gas supply pressure.
■Gas pressure in excess of the maximum inlet pressure specified at the heater inlet can cause
fires or explosions.
■Fires or explosions can lead to serious injury, death, building damage or loss of livestock.
■Gas pressure below the minimum inlet pressure specified at the heater inlet may cause
improper combustion.
■Improper combustion can lead to asphyxiation or carbon monoxide poisoning and therefore
serious injury or death to humans and livestock.
2

This Owner's Manual includes all options and accessories
commonly used on this heater. However, depending on the
configuration purchased, some options and accessories may
not be included.
When calling for technical service assistance, or for other
specific information, always have model number,
configuration number and serial number available. This
information is contained on the dataplate. The dataplate is
located on the exterior of the case assembly on the blower
outlet side of the heater.
This manual will instruct you in the operation and care of
your unit. Have your qualified installer review this manual
with you so that you fully understand the heater and how it
functions.
The gas supply line installation, installation of the heater,
and repair and servicing of the heater requires continuing
expert training and knowledge of gas heaters and should not
be attempted by anyone who is not so qualified. See page 6
for definition of the necessary qualifications.
Contact your local VAL-CO distributor or VAL-CO for
assistance, or if you have any questions about the use of the
equipment or its application.
VAL-CO has a policy of continuous product improvement. It
reserves the right to change specifications and design
without notice.
SECTION PAGE
General Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
Heater Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
Safety Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
Installation Instructions
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
Air Diverter Installation Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
Hanging Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
Sediment Trap Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
Thermostat Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
Manual Shut-Off Valve, Hose and Regulator Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
Start-Up Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
Shut-Down Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
Cleaning Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
Maintenance Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
Service Instructions
Motor and Fan Wheel Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
Air Proving Switch with Paddle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
Igniter and Flame Sensor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14
Gas Pressure Checks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14
Testing the Manual Reset High Limit Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15
Troubleshooting Guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16
Electrical Connection and Ladder Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23
Heater Component Function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24
Parts Identification
Parts Schematic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25
Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26
Label Identification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27
Fastener Selection Table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27
Warranty Policy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28
Replacement Parts and Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28
Table of Contents
General Information
3

SPECIFICATIONS
60 mbar 25 mbar 60 mbar 25 mbar
30 mbar 17 mbar 30 mbar 17 mbar
25 mbar 10 mbar 25 mbar 10 mbar
49.7 Watts 249 Watts
1450 RPM 1100 RPM
1.2 5.0
.4 1.7
74 cm x 32 cm x 29 cm 98 cm x 47 cm x 42 cm
TOP .3 m
SIDES .3 m
BACK .3 m
BLOWER
OUTLET
GAS L.P. Gas Supply — 1.83 m
SUPPLY Natural Gas Supply — N/A
60 225
L.P. Natural L.P. Natural
Gas Gas Gas Gas
MMooddeell
Ventilation Air Required 429 Cubic Meters 1543 Cubic Meters
to Support Combustion per Hour per Hour
Maximum Input 17.6 KW 65.9 KW
Fuel
Electrical Supply
(Volts/Hz/Phase)
Amp Draw
Dimensions
L x W x H
Minimum Safe
Distances From
Nearest
Combustible
Materials
STARTING
CONTINUOUS
OPERATION
Motor Characteristics
Burner Manifold Pressure
Ball Bearing
3 m
220-240/50/1
4
Heater Specifications
Inlet Gas Supply Pressure
Acceptable at Inlet of Heater for
Purpose of Input Adjustment
MAX.
MIN.

LP ggas aand nnatural ggas hhave mman-mmade oodorants aadded sspecifically ffor ddetection oofffuel ggas lleaks.
If aaggas lleak ooccurs, yyou sshould bbeaable ttossmell tthe ffuel ggas.
THAT’S YYOUR SSIGNAL TTOGGOIINTO IIMMEDIATE AACTION!
■Do not take any action that could ignite the fuel gas. Do
not operate any electrical switches. Do not pull any
power supply or extension cords. Do not light matches
or any other source of flame. Do not use your telephone.
■Get everyone out of the building and away from the area
immediately.
■Close all propane (LP) gas tank or cylinder fuel supply
valves, or the main fuel supply valve located at the meter
if you use natural gas.
■Propane (LP) gas is heavier than air and may settle in low
areas. When you have reason to suspect a propane
leak, keep out of all low areas.
■Natural gas is lighter than air and can collect around
rafters or ceilings.
■Use your neighbor’s phone and call your fuel gas
supplier and your fire department. Do not re-enter the
building or area.
■Stay out of the building and away from the area until
declared safe by the firefighters and your fuel gas
supplier.
■FINALLY, let the fuel gas service person and the
firefighters 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
leakages, and then relight the appliance for you.
WARNING
■Do not use this heater for heating human living quarters.
■Do not use in unventilated areas.
■The flow of combustion and ventilation air must not be
obstructed.
■Proper ventilation air must be provided to support the
combustion air requirements of the heater being used.
■Refer to the specification section of the heater’s Owner’s
Manual, heater dataplate, or contact VAL-CO to
determine combustion air ventilation requirements of
the heater.
■Lack of proper ventilation air will lead to improper
combustion.
■Improper combustion can lead to carbon monoxide
poisoning in humans leading to serious injury or death.
Symptoms of carbon monoxide poisoning can include
headaches, dizziness and difficulty in breathing.
■Symptoms of improper combustion affecting livestock
can be disease, lower feed conversion, or death.
Asphyxiation Hazard
■Some ppeople ccannot ssmell wwell. SSome ppeople ccannot
smell tthe oodor ooftthe mman-mmade cchemical aadded tto
propane ((LP) oornnatural ggas. YYou mmust ddetermine iifyyou
can ssmell tthe oodorant iintthese ffuel ggases.
■Learn to recognize the odor of propane (LP) gas and
natural gas. Local propane (LP) 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.
■Smoking can decrease your ability to smell. Being
around an odor for a period of time can affect your
sensitivity to that particular odor. Odors present in
animal confinement buildings can mask fuel gas odor.
■The oodorant iinppropane ((LP) ggas aand nnatural ggas iis
colorless aand tthe iintensity oofiits oodor ccan ffade uunder
some ccircumstances.
■If there is an underground leak, the movement of gas
through the soil can filter the odorant.
■Propane (LP) gas odor may differ in intensity at different
levels. Since propane (LP) gas is heavier than air, there
may be more odor at lower levels.
■Always bbessensitive ttotthe sslightest ggas oodor. If you
continue to detect any gas odor, no matter how small,
treat it as a serious leak. Immediately go into action as
discussed previously.
5
Safety Precautions
FUEL GAS ODOR
ODOR FADING -- NO ODOR DETECTED
ATTENTION -- CRITICAL POINTS TO REMEMBER!
■Propane (LP) gas and natural gas have a distinctive odor.
Learn to recognize these odors. (Reference “Fuel Gas
Odor” and “Odor Fading” sections above.
■ If you have not been properly trained in repair and service
of propane (LP) gas and natural gas fueled heaters, then
do not attempt to light heater, perform service or repairs,
or make any adjustments to the heater on propane (LP)
gas or natural gas fuel system.
■Even if you are not properly trained in the service and
repair of the heater, ALWAYS be consciously aware of the
odors of propane (LP) gas and natural gas.
■A periodic “sniff test” around the heater or at the
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 heater
or the gas supply line unless you have continuing
expert training and knowledge of gas heaters.
Qualifications for service and installation of this
equipment are as follows:
a.
To be a qualified gas heater service person, you
must have sufficient training and experience to
handle all aspects of gas-fired heater installation,
service and repair. This includes the task of
installation, troubleshooting, replacement of
defective parts and testing of the heater. You must
be able to place the heater into a continuing safe
and normal operating condition. You must
completely familiarize yourself with each model
heater by reading and complying with the safety
instructions, labels, Owner’s Manual, etc., that is
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 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 VAL-CO heaters
must meet all relevant local, state and national codes.
Included are L.P. gas, natural gas, electrical, and
safety codes. Your local fuel gas supplier, a local
licensed electrician, the local fire department or
similar government agencies, or your insurance agent
can help you determine code requirements.
3. Do not move, handle, or service heater while in
operation or connected to a power or fuel supply.
4. This heater may be installed in areas subject to
washdown. This heater may only be washed on the
external case assembly—see Cleaning Instructions.
Do not wash the interior of the heater. Use only
compressed air, 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 for at least one hour after external washdown.
5. For safety, this heater is equipped with a manual reset
high-limit switch and an air flow switch. Never operate
this heater with any safety device that has been
bypassed. Do not operate this heater unless all of
these features are fully functioning.
6. Do not operate the 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 heater.
8. Do not block air intakes or discharge outlets of the
heater. Doing so may cause improper combustion or
damage to heater components leading to property
damage or animal loss.
9. The hose assembly (if provided) 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 heater being put into
operation. The hose assembly shall be protected from
animals, building materials, and contact with hot
surfaces during use. The hose assembly shall be that
specified by the manufacturer. See parts list.
10. Check for gas leaks and proper function upon heater
installation, before building repopulation or when
relocating.
11. This heater should be inspected for proper operation
by a qualified service person before building
repopulation and at least annually.
12. Always turn off the gas supply to the appliance if the
appliance is not going to be used in the heating of
livestock.
13. This heater is wired for a three-wire electrical system.
There is a hot lead, neutral lead, and a ground lead.
The heater may or may not incorporate a plug in the
power cord on the heater and the plug may or may not
incorporate a pin for the ground wire. In any case, the
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. If gas flow is interrupted and the flame goes out, do
not relight the heater until you are sure that all gas
that may have accumulated has cleared away. In any
event, do no relight the heater for at least 5 minutes.
15. In a hanging type installation, rigid pipe or copper
tubing coupled directly to the 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 BS1387
Medium Duty Galvanized Steel Tube. (Aluminum
piping or tubing shall not be used.) Copper tubing
when used for conveying natural gas, shall be
internally tinned or equivalently treated to resist
sulphur.
6

1. Read all safety precautions and follow VAL-CO
recommendations 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 repair or replacement.
2. Make sure the heater is properly positioned before
use and is hung level. Observe and obey all minimum
safe distances of the heater to the nearest
combustible materials. Minimum safe distances are
given on the heater nameplate and on page 4 of this
manual.
3. The heater is approved for either indoor or outdoor
use. When the heater is mounted outdoors, use only
the approved air handling kit.
4. For heaters intended for outdoor installation, the
heater is to be installed at least 50 cm above the
ground or to a height that would prevent snow
blockage of heater’s air inlet.
5. The heater’s gas regulator (with pressure relief valve)
should be installed outside of building. Any regulators
inside the buildings must be properly vented to the
outside. Local, state and national codes always apply
to regulator installation. Natural gas regulators with
vent limiting device may be mounted indoors without
venting to outdoors.
6. Insure that all accessories that ship within the heater
have been removed from inside of heater and
installed. This pertains to air diverters, hose,
regulators, etc.
7. 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 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.
8. Any heater connected to a piping system must have an
accessible, approved manual shut off valve installed
within 1.83 meters of the heater it serves.
9. 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. Further 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. Further 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.
10. A qualified service agency must check for proper
operating gas pressure upon installation of the heater.
11. Light according to instructions on heater or within
owner's manual.
12. It is extremely important to use the proper size and
type of gas supply line to assure proper functioning of
the heater. Contact your fuel gas supplier for proper
line sizing and installation.
Installation Instructions
GENERAL
WARNING
Fire oorEExplosion HHazard.
Can ccause pproperty ddamage, ssevere iinjury oorddeath.
1. Disconnect power supply before wiring to prevent
electrical shock or equipment damage.
2. To avoid dangerous accumulation of fuel gas, turn
off gas supply at the appliance service valve before
starting installation, and perform gas leak test after
completion of installation.
3. Do not force the gas control knob. Use only your
hand to turn the gas control knob. Never use any
tools. If the knob will not operate by hand, the
control should be replaced by a qualified service
technician. Force or attempted repair may result in
fire or explosion.
WARNING
Fire aand EExplosion HHazard
■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,
personal injury or loss of life.
7

13. Make sure the heater has the proper gas regulator for
the application. A regulator must be connected to the
gas supply so that gas pressure at the inlet to the gas
valve is regulated within the range specified on the
dataplate at all times. Contact your gas supplier, or
VAL-CO if you have any questions.
14. This heater can be configured for use with either L.P.
gas vapor withdrawal or natural gas. Consult the
dataplate, located on interior of the burner end or
motor end door, for the gas configuration of the
specific heater. Do not use the heater in an L.P. gas
liquid withdrawal system or application. If you are in
doubt, contact VAL-CO .
15. 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.
16. 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 building
and also to the individual heater. Contact your fuel
gas supplier if you have any questions.
17. Any defects found in performing any of the service or
maintenance procedures must be eliminated and
defective parts replaced immediately. The heater
must be retested by properly qualified service
personnel before placing the heater back into use.
8
(Optional accessory on some models.)
(Appearance of the outlet on heater may vary from model to model.)
AIR DIVERTER
INSTALLATION INSTRUCTIONS
1. Optional air diverters can be installed in the heater
outlet to provide direction to the heated air as it exits
the heater. Installation options include installing the
diverters in such a way as to broadly distribute the air
in two 45 degree paths or to focus the air flow in one
45 degree direction.
2. The air diverters require hand forming prior to
installation. Make 90 degree bends utilizing the
perforations provided. Diverter should then have the
shape as 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 (Typical installation allowing two directions of air movement.)
Alternate Air Diverter Installations
TABS
DIVERTER
HALVES
OUTLET
SCREWS
FORMED
OUTLET GUARD
NOTCHES IN MOUNTING TABS

HANGING INSTRUCTIONS
9
OPTIONAL INDOOR
REGULATOR
MOUNTING LOCATION
GAS HOSE
THERMOSTAT
CORD
YOKE
HEATER
THERMOSTAT 30.5CM 30.5CM
BLACK PIPE
THROUGH WALL
VENT LINE
WALL OUTLET
POWER CORD
SEDIMENT
TRAP
WALL
CHAIN OR CABLE
EYEBOLT
NUT
FLAT WASHER
CAGE NUT
CHAIN
CASE TOP
1. Assemble according to the illustration and tighten all
eyebolts securely.
FIG. 2
2.Be sure heater is securely fastened and is hanging level.
(Check crosswise and lengthwise.)
3. See Fig. 3 for typical indoor installation. In any animal
confinement building, consideration must be given to
making sure the heater is located away from the
livestock so that livestock cannot knock the heater,
tear it loose from its mounting, or damage the heater
or its gas supply line in any way. Make sure you
observe and obey minimum clearance distances to
combustible materials as stated in the specification
section of this owner’s manual and on the heater
itself.
FIG. 3
SEDIMENT TRAP ASSEMBLY
(Optional Accessory)
NIPPLE
HOSE ADAPTER
TEE
NIPPLE
CAP
TO GAS CONTROL
VALVE INLET
Assemble the tee, nipples and cap together and tighten
securely. 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 aall cconnections ffor
gas lleaks uusing aapproved ggas lleak ddetectors.
FIG. 4

10
MANUAL SHUT-OFF VALVE, HOSE
AND REGULATOR ASSEMBLY
To CConnect tthe DDirect WWired TThermostat KKit ttotthe CControl
Box oontthe HHeater:
a. The installation and wiring of a thermostat must
be done by an electrician or someone properly
qualified.
b. The thermostat cordset must use a minimum of
18 gauge wire consisting of a hot lead, neutral
lead, and a ground lead.
c. The heater must be tested for proper operation
after the thermostat has been connected.
WARNING
Electrical SShock HHazard
■Disconnect the electrical supply before connecting the
thermostat to the heater.
■Failure to follow this warning can result in electrical
shock, leading to personal injury or death.
THERMOSTAT INSTALLATION
(Optional Accessories)
REGULATOR VENT
PIPING ADAPTER
VALVE, MANUAL
SHUT-OFF
NIPPLE 1/2"
REGULATOR
PIPING ADAPTER
ADAPTER
GAS HOSE
ADAPTER
SEDIMENT TRAP
TO GAS CONTROL
VALVE INLET
GAS FLOW
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 the
figure. 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 aall cconnections ffor ggas lleaks uusing aapproved
gas lleak ddetectors.
FIG. 5

Follow steps 1 - 7 on initial start-up after heater installation
by a qualified service person. For normal start-up, simply set
the thermostat to a setting above room temperature.
1. Open all manual fuel supply valves and check for gas
leaks using approved leak detectors.
2. Open the control box.
3. The gas control valve has a manual shut-off feature
incorporated into the valve assembly. Make sure the
indicator on the control valve is positioned to On.
FIG. 6
4. This heater includes a direct spark ignition (DSI)
control module for purposes of controlling the timing
of the ignition process of the heater as well as
monitoring of the safety functions. The DSI module is
located in a control box assembly at the motor end of
the heater. On the DSI is a red light emitting diode
(LED). This LED indicates the status of the heater. A
consistent flashing from the LED is an indicator that
the heater is functioning correctly. Any other light
pattern, steady on or flashing, given by the LED is
indicative that there is a problem in the operation of
the heater. Refer to the troubleshooting decal on the
access panel at the burner end of the heater for
assistance in troubleshooting or refer to the
troubleshooting guide within this Owner’s Manual.
Only qualified and properly-trained personnel shall
service or repair the heater.
5. On a call for heat, the motor will start up and run for
five (5) seconds prior to ignition trial. This pre-purge
is a safety feature and a normal operational
characteristic. After five (5) seconds the igniter will
spark until burner flame is detected by the control
module.
NOTE: It is normal for air to be trapped in the gas
hose on new installations. You may have to
attempt more than one trial for ignition before
the air is finally purged from the line and
ignition takes place.
6. If ignition is not achieved during the ignition trial, the
ignition control module will lock-out and a two-flash
pattern will be indicated by the LED. To reset the
ignition control module, remove the screw located
within the viewing lens of the control box. Using a
small tool, fully depress the reset button located
directly above the red L.E.D. for 1 - 3 seconds until fan
motor starts.
7. Do not exceed the input rating stamped on the
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.
If the 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 standard shut down.
1. Close all manual fuel supply valves.
2. With the 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 heater from the electrical supply.
Shut-Down Instructions
11
Start-Up Instructions
ON
OFF

1. Have your gas supplier check all gas piping annually
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.
2. The aappliance aarea sshall bbekkept cclear aand ffree ffrom
combustible mmaterials, ggasoline, aand oother fflammable
vapors aand lliquids.
3. Review all heater markings prior to use. Markings
constitute information relating to warnings, start-up,
shut-down instructions, etc. Make sure all markings
are legible and not cut, torn, or otherwise damaged.
Any damaged markings should be replaced
immediately. Markings are available at no cost by
contacting VAL-CO.
4. Regulators can wear out and function improperly.
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.
5. Regulators must be periodically inspected to make
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.
1. Before cleaning, shut off all gas supply valves and
disconnect electrical supply.
2. The heater should have dirt or dust removed
periodically:
a. After each flock or between building re-population,
give the 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 heater down.
b. At least once a year, give the 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 Instructions. This
same Warning is also supplied on the heater.
WARNING
This heater may be washed only on the external case
assembly provided:
A. The 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 heater.
D. The water pressure does not exceed 3.1 BAR for 10
seconds on each side of heater.
E. The heater is not reconnected to electrical supply for
a minimum of 1 hour or until the heater is thoroughly
dry.
Improper cleaning of the 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 which
can result in gas leaks and fire or explosion from the
leak.
Clean internal components of the heater with a soft, dry
brush or cloth, or compressed air.
12
Cleaning Instructions
Maintenance Instructions
WARNING
Fire, BBurn, aand EExplosion HHazard
■This heater contains electrical and mechanical components in the gas management, safety and airflow systems.
■Such components may become inoperative or fail due to dust, dirt, wear, aging, or the corrosive atmosphere of
an animal confinement building.
■Periodic cleaning and inspection as well as proper maintenance are essential to avoid serious injury or property
damage.

Service Instructions
1. Shut off the gas supply to the heater.
2. Disconnect the heater from its electrical supply.
3. Open the case access panel on the control box end of
the heater.
4. Disconnect the motor leads.
5. Remove the screws securing the motor mounting plate
to the fan housing.
6. Pull the fan and motor assembly from the housing.
7. Loosen the square had set screw(s) on the fan wheel
with a wrench.
8. Pull the fan wheel from the motor shaft. Use a wheel
puller if necessary.
9. Remove the four (4) nuts securing the motor to the
mounting plate.
10. To replace the motor and fan, reverse the above
procedures.
NOTES: a. Fan wheel to motor mount plate spacing
must be adjusted to the clearances
specified in the table below before
tightening the fan wheel to the motor shaft.
b. Make sure that set screw(s) of the fan are
on the “flats” of motor shaft when
tightening.
Heat Output
17.6 KW 6.4 mm
65.9 KW 3.2 mm
FIG. 7
MOTOR AND FAN WHEEL ASSEMBLY
AIR PROVING SWITCH WITH PADDLE
13
MOTOR MOUNT PLATE FAN WHEEL
CLEARANCE
MOTOR
SWITCH W/PADDLE
LEADS
OBLONG HOLE
NUTS PADDLE
HOUSING SIDE PANEL
1. Shut off the gas supply to the heater.
2. Disconnect the heater from its electrical supply.
3. Open the case access panel on the control box end of
the heater.
4. Remove the two (2) sheet metal screws holding the
switch with bracket to blower housing. Remove the
assembly by turning the switch assembly 90°so the
paddle on the switch arm can be pulled through the
oblong hole on side of fan housing.
5. Disconnect the leads from the air proving switch.
6. To replace the switch, reverse the above procedure.
The replacement switch will be pre-assembled to its
mounting bracket.
IMPORTANT
Make sure you don’t bend the switch arm when installing the
replacement switch. Bending the switch arm may create
ignition problems later.
FIG. 8

1. Close the fuel supply valves to the heater and
disconnect the heater from its electrical supply.
2. The igniter and sensor assembly is located within a
metal enclosure mounted to the heat chamber near
the burner.
3. Remove the enclosure cover.
4. Remove the screws that secure this assembly to the
heat chamber. See Fig. 9.
FIG. 9
5. Disconnect the igniter cable and sensor lead from the
ignition module.
6. To reassemble, reverse these procedures.
7. Reconnect the heater to its electrical supply. Open the
fuel supply valves to the heater.
8. Start the heater and test for proper operation.
IMPORTANT
■The igniter/sensor assembly may require cleaning due to
accumulations of dust and dirt over a period of time,
thereby affecting its ability to ignite fuel gas and sense
burner flame. Cleaning will require igniter/sensor
removal.
-- If spark appears to be weak, briskly rub the igniter
electrode with emery cloth or steel wool to remove
any buildup. Recycle the heater.
--- If the spark appears strong but the heater cycles off,
briskly rub the sensor rod with emery cloth or steel
wool to remove any build-up. Recycle the heater.
--- If problem persists, insure the burner ground screw
and terminal are not corroded, and that both are
securely fastened to the burner.
■Insure the igniter gap is 3 mm (min.) to 4 mm (max.) and
the igniter tip is centered over the burner port according
to the illustration below. To adjust the gap between the
igniter and the burner, loosen the three screws, as
illustrated, and slide the igniter/sensor assembly up or
down to maintain proper gap. Tighten the screws. See
Fig. 10.
IGNITER AND FLAME SENSOR
14
FIG. 10
ATTENTION
■The following explains a typical procedure to be followed
in checking gas pressures.
■The gas pressures will vary depending upon country, gas
category and fuel type.
■Consult the dataplate on the heater or pages 4 - 5 in this
manual for specific pressures to be used in conjunction
with this procedure.
■Gas pressure measured at the inlet to the gas valve is
Inlet Pressure and gas pressure measured at the outlet
of the gas valve is Burner Manifold Pressure.
GAS PRESSURE CHECKS
WARNING
Fire aand EExplosion HHazard
■Do not disassemble the gas control valve.
■Do not attempt to replace any components on the gas
control valve.
■The gas control valve must be replaced if any physical
damage occurs to the control valve assembly.
■Failure to follow this warning will result in fire or
explosions, leading to injury or death to humans and
livestock, and building damage.
HEAT CHAMBER
ENCLOSURE
COVER
ENCLOSURE WITH
IGNITER/SENSOR
FLAME
SENSOR
IGNITER
BURNER HEAT CHAMBER
ONE SCREW INSIDE HEAT CHAMBER
IGNITER/SENSOR
ENCLOSURE
TWO SCREWS ON FRONT
OF HEAT CHAMBER
4 MM

OUTLET PRESSURE
TAP SCREW
INLET PRESSURE
TAP SCREW
A. Preparation
1. Obtain two pressure gauges capable of reading up to
65 mbar.
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.
B. Gauge IInstallation
1. Locate the inlet and outlet pressure taps, see Fig. 11.
Turn screws internal to the pressure taps at least one
full turn counterclockwise.
2. Securely connect a pressure gauge to each pressure
tap.
3. Open the fuel supply valves to the heater and
reconnect the heater electrical supply.
4. Start the heater.
C. Reading PPressures
1. With the heater operating, the pressure gauges should
read the pressures specified on the dataplate.
2. Do the readings at the inlet and outlet pressure
gauges agree with that specified on the dataplate? If
so, then no further checking or adjustment is required.
Proceed to Section D.
3. If the inlet pressures do not agree with that specified
on the dataplate, then the building system regulator
controlling gas pressure to the heaters requires
adjustment.
4. If the inlet pressures are correct and the burner
manifold pressure does not agree with that specified
on the dataplate, then the gas control valve’s internal
pressure regulator requires adjustment. See Fig. 12
for regulator location.
D. Completion
1. Once inlet and burner manifold pressures have been
confirmed and/or properly set, close the fuel supply
valve to the heater and allow the heater to burn off any
gas remaining in the gas supply line.
2. Disconnect the heater from its electrical supply.
3. Remove the gauges and connecting hoses.
4. Tighten the pressure tap screws by turning clockwise.
Check for gas leaks to insure the tap screws have
seated properly.
FIG. 11
FIG. 12
LOW PRESSURE GAUGELOW PRESSURE GAUGE
INTERNAL PRESSURE
REGULATOR OUTLET PRESSURE TAP
INLET PRESSURE TAP
OFF
ON
0
5
10
15
20
25
30
35
40
45
50
55
60
65
0
5
10
15
20
25
30
35
40
45
50
55
60
65
TESTING THE MANUAL RESET HIGH LIMIT SWITCH
The high limit switches should be tested a minimum of once
per year when the heater is given a thorough cleaning.
1. Disconnect the heater from its electrical supply.
2. Remove the high limit switch from the heat chamber.
3. Holding the switch by one of its mounting legs, apply a
small flame only to the sensing portion on the back of
the switch. Be ccareful nnot ttommelt tthe pplastic hhousing
of tthe sswitch wwhen cconducting tthis ttest.
4. Within a minute, you should hear a “pop” coming from
the switch, which indicates the contacts of the switch
have opened.
5. Allow the switch cool down for about a minute before
firmly pressing the reset button on the switch.
6. Check for electrical continuity across the switch
terminals to make sure the contacts have closed.
7. Reinstall the switch back into the heater. Reconnect
the heater to its electrical supply. Start the heater and
check for proper operation.
FIG. 13
RESET BUTTON
SENSING
SURFACE
TERMINAL
FLAME
MOUNTING
LEG
WARNING
Fire HHazard
■Do not operate the appliance with the high limit switch
bypassed.
■Operating the heater bypassed high limit switch may
lead to overheating, possibly resulting in a fire, with
subsequent damage to the heater, building damage, or
loss of livestock.
15

16
READ THIS ENTIRE SECTION BEFORE
BEGINNING TO TROUBLESHOOT PROBLEMS.
The following troubleshooting flow charts provide systematic
procedures for isolating equipment problems. The charts
are intended for use by a QUALIFIED GAS HEATER SERVICE
PERSON. DO NNOT SSERVICE TTHESE HHEATERS UUNLESS YYOU
HAVE BBEEN PPROPERLY TTRAINED.
TEST EQUIPMENT REQUIRED
The following pieces of test equipment will be required to
troubleshoot this system with minimal time and effort.
• Digital MMultimeter - for measuring AC and DC voltage and
resistance.
• Low PPressure GGauge - for checking inlet and outlet
pressures of the gas control valve against dataplate rating.
INITIAL PREPARATION
■Visually inspect equipment for apparent damage.
■Check all hoses for abrasion and wear. Replace any
that are suspect.
■Make sure heater is properly installed and meets
minimum clearances to nearest combustible materials.
(Refer to dataplate on the heater.)
■Check all wiring for loose connections and worn
insulation.
Refer to the system operation sequence in this section to
gain an understanding as to how the equipment operates
during a call for heat.
Understanding the sequence of operation of the ignition
module and related components is essential as it will relate
directly to problem solving provided by the flow charts.
The ignition control module is self-diagnostic. The red light
on the module will flash a specific light pattern depending
upon the problem which is diagnosed. To effectively use the
flow charts, you must first identify what the problem is by the
light pattern of the L.E.D. (light emitting diode) diagnostic
light. If the light is flashing, the flash pattern will be followed
by a pause and then a repeat of the flash pattern until the
problem is corrected. Refer to the tables below to identify
what page to refer to when troubleshooting any problems.
Heating MMode PProblems Page
L.E.D. is not on, but heater is operating properly
during a call for heat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18
L.E.D. is steady on. No flash pattern . . . . . . . . . . . . . . . . .18
L.E.D. light is not on during a call for heat. Fan
motor does not run, heater does not light . . . . . . . . . . . . .19
L.E.D. diagnostic light is flashing:
A. Two Times . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20
B. Three Times . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21
C. Five Times . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22
Components should be replaced only after each step has
been completed and replacement is suggested in the flow
chart. Refer to the Servicing sections as necessary to obtain
information on disassembly and replacement procedures of
the component once the problem is identified by the flow
chart.
Troubleshooting Guide
WARNING
Electrical SShock aand BBurn HHazard
■Troubleshooting this system may require operating the
unit with line voltage present and gas on. Use extreme
caution when working on the heater.
■Failure to follow this warning may result in property
damage, personal injury or death.

17
DIRECT IGNITION OPERATION SEQUENCE:
— Line Voltage is Sent to Transformer
— Transformer Reduces Line Voltage to 24 Volts
— A Call for Heat Occurs from the Thermostat
— Thermostat Sends 24 Volts to the Fuse and to the
Ignition Control
— Red L.E.D. on Control Module is Illuminated
— Ignition Control Module Performs Self Safety Check
-- Internal Components are Tested
-- Air Proving Circuit is Checked
— Ignition Control Module Begins Ignition Trial Sequence
— Ignition Control Module Sends 24 Volts to Air Proving
Switch
-- Fan Motor Starts
-- Air Proving Switch Closes and 24 Volts is Returned to
the Ignition Control Module
— Ignition Control Module Sends High Voltage to the Igniter
Electrode
-- Igniter Sparks
— Ignition Control Module Sends 24 Volts to the Gas
Control Valve through the High Limit Switches
-- Gas Control Valve Opens
— Ignition Occurs
-- Igniter Continues to Spark until Flame Proving Occurs
-- Ignition Spark is Shut Off
-- Gas Valve Stays Open
— Room Warms to Desired Temperature
-- Thermostat is Satisfied
-- Heater Shuts Down
— Process Starts Again on a Call for Heat
IGNITION FAILURE SEQUENCE:
— Trial for Ignition Takes Approximately 15 Seconds
— If Ignition Module Does Not Sense a flame Within the
Ignition Trial, the Module goes into Safety Lockout (2
Flash Pattern)
-- Gas Valve Closes
-- Ignition Spark Shuts Off
-- Fan Motor Stops
— To Retry for Ignition, the System Must be Manually Reset
-- Remove the Screw From the Lens in the Control Box of
the Heater. Using a Small Tool, Fully Depress the
Reset button Located Directly Above the Red L.E.D. for
1 - 3 Seconds Until the Fan Motor Starts.

18
LED FFlashing Normal Operation
LED iisNNot OOn, BBut HHeater iisOOperating PProperly DDuring aaCCall ffor HHeat. Defective LED in Control Module. Replace Ignition Control Module.
LED iisSSteady OOn. NNoFFlash PPattern. Ignition Control Lock-Out Due to:
(A) Ignition Control Module Failure. (B) Poor Electrical Quality: Frequency
Line Noise, Line Spikes.
Reset Ignition Control Module By Depressing Reset Button with a Small Tool: (A) If Control Module Does Not Reset, Replace Ignition
Control Module.
(B) Have Qualified Electrician Check the Power Supply.

19
Problem
LED LLight
Not OOn During aaCCall
for HHeat. Fan MMotor
Does NNot
Run, HHeater
Does NNot
Light.
Is Heater
Plugged In?
Plug heater in.
Yes
No
Yes Yes
Yes
Is
Proper
Voltage Supplied to
Transformer?
Check Electrical
Connections and Power
Supply to Transformer.
Repair as Necessary.
Are 24 Volts
Supplied from
Transformer?
Is
Proper
Voltage Supplied
to Heater Power Cord
and Through
Power
Cord?
Check Dataplate for
Electrical Supply
Requirements. Provide
Proper Voltage From
Electrical Supply. Check
Circuit Breakers in
Building Electrical
System. Check Power
Cord for Continuity.
Is
Thermostat Set
Above Room
Temperature?
Set Thermostat
Above Room
Temperature.
No No
No No
No
Yes
Is
Thermostat
Receiving Proper
Voltage?
Check Electrical
Connections. Repair
as Necessary.
Replace Ignition Control Module.
Yes
Replace Transformer.
No
Are
Thermostat
Contacts Operating
Properly?
Check for Continuity.
Replace Thermostat if
Necessary.
Yes
No
Is Fuse
Receiving 24
Volts?
Check Wiring.
Repair as
Necessary.
Yes
No
Is Fuse
Delivering 24
Volts to the Ignition
Control Module?
Determine Cause of
Fuse Opening and
Replace Fuse.
Yes