IMPORTANT: Read and understand this manual before
assembling, starting or servicing heater. Improper use
of heater can cause serious injury. Keep this manual for
future reference.
GENERAL HAZARD WARNING:
Failure to comply with the precautions and instructions
provided with this heater, can result in death, serious
bodily injury and property loss or damage from hazards
of fire, explosion, burn, asphyxiation, carbon monoxide
poisoning, and/or elctrical shock.
Only persons who can understand and follow the instructions should use or service this heater.
If you need assistance or heater information such as an instructions manual, labels, etc. contact the manufacturer.
Safety Information ............................................... 2
Illlustrated Parts Breakdown and Parts List ......... 8
Warranty and Repair Service ..............
6
7
Back Cover
SAFETY INFORMATION
WARNING: This product
contains and/or generates
chemicals known to the State
of California to cause cancer or
birth defects, or other reproductive harm.
WARNING: Fire, burn inhalation, and explosion hazard.
Keep solid combustibles, such
as building materials, paper or
cardboard, a safe distance away
from the heater as recommended
by the instructions. Never use
the heater in spaces which do or
may contain volatile or airborne
combustibles, or products such
as gasoline, solvents, paint thinner, dust particles or unknown
chemicals.
WARNING: Not for home or
recreational vehicle use.
The heater is designed for use as a construction
heater in accordance with ANSI Z83.7/CGA
2.14. Other standards govern the use of fuel
gases and heating products for specific uses.
Your local authority can advise you about these.
The primary purpose of construction heaters is
to provide temporary heating of buildings under
construction, alteration or repair. Properly used,
the heater provides safe economical heating.
Products of combustion are vented into the area
being heated.
We cannot foresee every use which may be made
of our heaters. CHECK WITH YOUR LOCAL
FIRE SAFETY AUTHORITY IF YOU HAVE
QUESTIONS ABOUT HEATER USE
Other standards govern the use of fuel gases and
heat producing products for specific uses. Your
local authorities can advise you about these.
Carbon Monoxide Poisoning: Some people are
more affected by carbon monoxide than others.
Early signs of carbon monoxide poisoning resemble the flu, with headaches, dizziness, and/or
nausea. If you have these signs, the heater may not
be working properly. Get fresh air at once! Check
for proper ventilation and have heater serviced.
.
Propane Gas: Propane gas is odorless. An odor-
making agent is added to propane gas. The odor
helps you detect a propane gas leak. However, the
odor added to propane gas may fade. Propane gas
may be present even though no odor exists.
Make certain you read and understand all warn
ings. Keep this manual for reference. It is your
guide to safe and proper operation of this heater.
1. Install and use heater with care. Follow all
local ordinances and codes. In the absence
of local ordinances and codes, refer to the
Standard for Storage and Handling of Lique
fied Petroleum Gas, ANSI/NFPA 58 and the
Natural Gas Installation Code, CAN/CGA
B149.2. This instructs on the safe storage and
handling of propane gases.
2. This product has been approved for use in the
Commonwealth of Massachusetts.
3. Use only propane gas set up for vapor with
drawal.
4.
Provide adequate ventilation. Before using
heater, provide at least a 2.5 square foot
2
(0.232 m
foot (0.557 m2) (200,000 btu heaters) opening
of fresh, outside air.
5. For indoor use only. Do not use heater out
doors.
6. Keep heater away from strong drafts, wind,
water spray, rain, or dripping water.
7. Do not use heater in occupied dwellings or in
living or sleeping quarters.
8. Do not use heater in a basement or below
ground level. Propane gas is heavier than air.
If a leak occurs, propane gas may sink to the
lowest possible level.
9. Keep appliance area clear and free from com
bustible materials, gasoline, paint thinner, and
other flammable vapors and liquids. Dust is
combustible. Do not use heater in areas with
high dust content.
11. Keep heater at least six feet (1,83 m) from
propane tank(s).
12. Keep propane tank(s) below 100° F (37,8°C).
13. Use only the hose and factory preset regulator
provided with the heater.
14. Check heater for damage before each use. Do
not use a damaged heater.
) (80,000 btu heaters) or 6.0 square
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113811-01A
80,000
B
TU
/H
R
SAFETY INFORMATION
Continued
15. Check hose before each use of heater. If highly
worn or cut, replace with hose specified by
manufacturer before using heater.
16. Do not alter heater. Keep heater in its original
state.
17. Do not use heater if altered.
18. Locate heater on stable and level surface if
heater is hot or operating.
19. Not intended for use on finished floors.
20. Never block air inlet (bottom of shell) or air
outlet (around top of shell) of heater.
21. Do not leave heater unattended.
22. Keep children and animals away from
heater.
23. Never move, handle, or service a hot or operat
ing heater. Severe burns may result. You must
wait 15 minutes after turning heater off.
24. To prevent injury, wear gloves when handling
heater.
25. Never attach duct work to heater.
26. Turn off propane supply to heater when not
in use.
27. Use only original replacement parts. This
heater must use design-specific parts. Do
not substitute or use generic parts. Improper
replacement parts could cause serious or fatal
injuries.
UNPACKING
1. Remove all packing items applied to heater for
shipment. Keep plastic cover caps (attached to
inlet connector and hose/regulator assembly)
for storage.
2. Remove all items from carton.
3. Check all items for shipping damage. If heater
is damaged, promptly inform dealer where you
bought heater.
PRODUCT
IDENTIFICATION
Outer Shell
Ignitor
Button
-
Ball Valve
Control Knob
Figure 1 - 80,000 Btu Model Shown
Safety Pilot
Valve
VENTILATION
WARNING: Provide at least
a 2.5 square foot (0.23 m
opening of fresh, outside air
while running heater. If proper
fresh, outside air ventilation is
not provided, carbon monoxide
poisoning can occur. Provide
proper fresh, outside air ventila
tion before running heater.
2
)
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THEORY OF OPERATION
The Fuel System: The hose/regulator assembly
attaches to the propane gas supply. This provides
fuel to the heater.
The Ignition System: The piezo ignitor lights
the pilot.
The Automatic Control System: This system causes
the heater to shut down if the flame goes out.
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20
0,
000
BT
U
/
HR
PROPANE SUPPLY
You must provide propane gas and propane
tank(s).
Use this heater only with a propane vapor
withdrawal supply system. See Chapter 5 of the
Standard for Storage and Handling of Liquefied
Petroleum Gas, ANSI/NFPA 58
B149.2. Your local library or fire department will
have this booklet.
This heater will operate with a 20-pound (9,07 kg)
propane tank. However, you can only operate it in
the LOW position during mildly cool weather. At
higher heat settings or during colder weather, you
must use larger tanks.
The amount of propane gas ready for use from
propane tanks varies. Two factors decide this
amount.
1. The amount of propane gas in tank(s)
2. The temperature of tank(s)
The chart below shows the minimum number of
100-pound (45 kg) tanks needed to run the heater.
Connect tanks together with a manifold.
Average Temperature °F(°C) Number
At Tank Location Of Tanks
(80,000 Btu models)
20° (-6.7°) to 60° (15,6°) 1
0° (-17,8°) to 20° (-6.7°) 2
(200,000 Btu models)
20° (-6.7°) to 60° (15,6°) 2
0° (-17,8°) to 20° (-6.7°) 3
Less gas is vaporized at lower temperatures. Your
local propane gas dealer will help you select the
proper supply system.
INSTALLATION
WARNING: Review and understand the warnings in the
Safety Information section, page
2. They are needed to safely operate this heater. Follow all local
codes when using this heater.
CAUTION: Never ignite and/
or run this heater uhnless the
shells are fully extended and
locked into position.
OUTER SHELL
IMPORTANT: When the heater is first removed
from carton, the outer shell is in the down posi
tion. Protect hands before lifting outer shell. Never
grasp bare metal without hand protection.
4
and/or CAN/CGA
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1. Care must be taken to protect hands during this
step. Lift outer shell straight up as shown in Fig
ure 2, until all three clips engage slots in lower
shell. Screw holes will line up at this point.
2. Lock clips into place with 3 screws as shown
in Figure 2. The heater must not be operated
unless the outer shell is properlly extended
and fully locked into place.
Outer
Shell
Clip in Slot
of Lower
Shell
3 Screws
per Clip
Figure 2 - Lifting Outer Shell
CONNECTING TO GAS SUPPLY
WARNING: Test all gas piping
and connections for leaks after
installation or servicing. Never
use an open flame to check for
a leak. Apply a mixture of liquid
soap and water to all joints.
Bubbles forming show a leak.
Correct all leaks at once.
1. Provide propane supply system (see Propane
Supply,
page 4).
2. Connect fuel gas fitting on hose/regulator
assembly to propane tank(s). Turn fuel
gas fitting counterclockwise into threads
on tank. Tighten firmly using a wrench.
IMPORTANT:
pointing down. Pointing vent down protects
regulator from weather damage.
3. Connect hose to the valve inlet. Tighten firmly
using a wrench. You must use the regulator sup
plied with heater even if propane tank has one.
-
Tighten regulator with vent
113811-01A
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INSTALLATION
Continued
4. Open propane supply valve on propane tank(s)
5. Check all connections for leaks. Apply mix
Propane Supply
Valve
Propane
Tank
Note: If not opened slowly, excess-
slowly.
flow check valve on propane tank may stop
gas flow. If this happens, you may hear a click
inside the regulator assembly, this is the check
valve closing. To reset the excess flow check
valve, close propane supply valve and open
again slowly.
ture of liquid soap and water to gas joints.
Bubbles forming show a leak that must be
corrected.
Figure 3 - Regulator Position
Valve Inlet
Figure 4 - Hose and Valve Inlet
Hose
Regulator
POL
Fitting
Hose
OPERATION
2. Fully open the valve on the propane cylinder and
wait 15 seconds before proceding to step 3.
3. Depress red button on safety pilot valve admit
ting gas to the heater. Then push and release
the ignitor button until the pilot lights.
4. When the pilot lights, continue to hold the but
ton depressed for 30 seconds, then release.
5. If pilot goes out, wait 5 minutes and repeat the
lighting procedure.
6. When the pilot remains lit, open the ball valve
(turn knob counterclockwise) to light main
burner. Partially close valve to regulate heat
output.
Ignitor
Button
Ball Valve
Control Knob
Figure 5 - Starting Heater
Safety Pilot
Valve
TO STOP HEATER
1. Securely close valve on the propane cylinder.
2. Continue to operate heater until all fuel in the
hose has burned.
3. Fully close the ball valve.
TO RESTART HEATER
1. Securely close valve at propane cylinder.
2. Wait 5 minutes.
3. Restart following To Start Heater procedure
on page 5.
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WARNING: Review and understand the warnings in the
Safety Information section, page
2. They are needed to safely op
erate this heater. Follow all local
codes when using this heater.
TO START HEATER
1. Before lighting pilot fully close the ball valve
(turn knob fully clockwise).
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STORAGE
REPLACEMENT PARTS
CAUTION: Disconnect heater
from propane supply tank(s).
1. The heater should be inspected before each use,
and at least annually by a qualified person.
2. Before each use, check the soft "O" ring seat at
the bullnose of the POL fitting. If the "O" ring
is cut, scuffed, or otherwise damaged, replace
the POL fitting with part number LPA4020.
3. Turn off the gas at the propane/LP gas supply
cylinder(s) when the heater is not in use.
4. When the heater is to be stored indoors, the
connection between the propane/LP gas sup
ply cylinder(s) and the heater must be discon
nected and the cylinder(s) removed from the
heater and stored outdoors and in accordance
with Chapter 5 of the Standard for Storage
and Handling of Liquefied Petroleum Gases
ANSI/NFPA 58 and CSA B149.1, Natural Gas
and Propane Installation Code
5. Store in a dry, clean, and safe place.
.
MAINTENANCE
WARNING: Never attempt
to service heater while it is
connected to propane supply,
operating, or hot. Severe burns
can occur.
1. Keep heater clean.
2. Inspect heater before each use. Check connec
tions for leaks. Apply mixture of liquid soap
and water to connections. Bubbles forming
show a leak that must be corrected. Correct
all leaks at once.
3. Inspect hose/regulator assembly before each
use. If hose is highly worn or cut, replace.
4. Have heater inspected yearly by a qualified
service person.
TECHNICAL SERVICES
You may have further questions about this heater.
If so, contact DESA Heating Productsʼ Technical
Service Department at 1-866-672-6040. When
calling, please have your model and serial numbers
of your heater ready.
You can also visit DESA Heating Productsʼ Techni
cal Service web site at www.desatech.com.
WARNING: Use only original
replacement parts. This heater
must use design-specific parts.
Do not substitute or use generic
parts. Improper replacement
parts could cause serious or fatal injuries. This will also protect
your warranty coverage for parts
replaced under warranty.
PARTS UNDER WARRANTY
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Contact authorized dealers of this product. If they
-
canʼt supply original replacement part(s), either
contact your nearest Parts Central or call DESA
Heating Productsʼ Technical Service Department
at 1-866-672-6040.
When calling DESA Heating Products, have ready
• your name
• your address
• model number of your heater
• how heater was malfunctioning
• purchase date
PARTS NOT UNDER WARRANTY
Contact authorized dealers of this product. If
they canʼt supply original replacement part(s),
either contact your nearest Parts Central (listed in
Authorized Service Center booklet) or call DESA
Heating Products at 1-866-672-6040 for referral
information.
When calling DESA Heating Products, have ready
• model number of your heater
• the replacement part number
ACCESSORIES
Purchase heater accessories and parts from your
nearest dealer or service center. If they can not
supply an accessory or part, either contact your
nearest Parts Central (listed in the separate Au
thorized Service Center booklet) or call DESA
Heating Productsʼ at 1-866-672-6040. You can
also write to the address listed on the back page
of this manual.
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113811-01A
SPECIFICATIONS
80,000 Btu 200,000 Btu
Type of Gas Propane/LP Only Propane/LP Only
Gas Supply Pressure to regulator
This list contains replaceable parts used in your heater. When ordering parts, follow the instructions
listed under Replacement Parts on page 6 of this manual.
KEY PART NUMBER
NO. 80,000 Btu 200,000 Btu DESCRIPTION QTY.
DESA Heating Products warrants this product and any parts thereof, to be free from defects in materials and
workmanship for one (1) year from the date of first purchase when operated and maintained in accordance with
instructions. This warranty is extended only to the original retail purchaser, when proof of purchase is provided.
This warranty covers only the cost of parts and labor required to restore the product to proper operating condition.
Transportation and incidental costs associated with warranty repairs are not reimbursable under this warranty.
Warranty service is available only through authorized dealers and service centers.
This warranty does not cover defects resulting from misuse, abuse, negligence, accidents, lack of proper main
tenance, normal wear, alteration, modification, tampering, contaminated fuels, repair using improper parts, or
repair by anyone other than an authorized dealer or service center. Routine maintenance is the responsibility of
the owner.
THIS EXPRESS WARRANTY IS GIVEN IN LIEU OF ANY OTHER WARRANTY EITHER EXPRESSED OR
IMPLIED, INCLUDING WARRANTIES OR MERCHANTABILITY AND FITNESS FOR A PARTICULAR
PURPOSE.
DESA Heating Products assumes no responsibility for indirect, incidental or consequential damages. Some states
do not allow the exclusion or limitation of incidental or consequential damages, or limitations or exclusions may
not apply to you. This Limited Warranty gives you specific legal rights and you may also have other rights which
vary from state to state.
This warranty does not cover discoloration due to operation of heater. We reserve the right to amend these specifications at any time without notice. The only warranty applicable is our standard written warranty. We make no other
warranty, expressed or implied.
WARRANTY SERVICE
Should your heater require service, return it to your nearest authorized service center. Proof of purchase must be
presented with the heater. The heater will be inspected. A defect may be caused by faulty materials or workmanship.
If so, DESA Heating Products will repair or replace the heater without charge.
REPAIR SERVICE
Return your heater to your nearest authorized service center. Repairs not covered by the warranty will be billed at
standard prices. Each Service Center is independently owned and operated. We reserve the right to amend these
specifications at any time without notice.
For more information write:
-
2701 Industrial Drive
P.O. Box 90004
Bowling Green, KY 42102-9004
ATTN: Customer Service Department
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