Desa TC102, TC101, TC104, TC103, TC105 Owner's Manual
PROPANE CONVECTION CONSTRUCTION HEATER
OWNER’S MANUAL
Variable 15,000/25,000
Btu/Hr Models
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 re, explosion,
burn, asphyxiation, and/or carbon monoxide poisoning.
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 .................................................................. 2
Product Identication ........................................... 3
Unpacking............................................................ 3
Theory of Operation............................................. 3
Ventilation ............................................................ 4
Propane Supply ................................................... 4
Installation ........................................................... 4
Specications ...................................................... 4
Operation ............................................................. 5
TABLE OF CONTENTS
Storage ................................................................ 5
Maintenance ........................................................ 6
Inspecting Burner ................................................ 6
Technical Service................................................. 6
Replacement Parts .............................................. 6
Troubleshooting ................................................... 7
Parts .................................................................... 7
Warranty .............................................................. 8
Save this manual for future reference.
For more information, visit www.desatech.com
SAFETY
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, inha-
lation, 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 specic
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
re safety authority if you have questions
about heater use.
Carbon Monoxide Poisoning: Some people
are more affected by carbon monoxide than
others. Early signs of carb on monoxi de
poisoning resemble the u, with headaches,
dizziness, and/or nausea. If you have these
signs, the heater may not be working properly. Get fresh air at once! Have heater
serviced.
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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 can fade. Propane gas may be present
even though no odor exists.
Make certain you read and understand all
warnings. 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 Liq-
ueed Petroleum Gas, ANSI/NFPA 58 and
the Propane Installation Code, CAN/CGA
B149.2. This instructs on the safe storage
and handling of propane/LP gases.
2. Use only the hose and factory preset
regulator provided with the heater.
3. Use only propane gas set up for vapor
withdrawal.
4. For indoor and outdoor use. When used
indoors, use only in well-vented areas.
Prov id e at least 1 20 squ ar e i nc hes
(774.2 cm2) of fresh, outside air before
using heater.
5. Do not use heater in occupied dwellings,
sleeping quarters, campers, tents, or any
type of unvented or enclosed area.
6. Do not use heater in basement or below
ground level. Propane gas is heavier than
air. If a leak occurs, propane gas will sink
to the lowest possible level.
7. Do not use heater as a cooking device.
Do not place objects on top of heater.
8. Keep appliance area clear and free from
combustible materials, gasoline, paint
thinner, and other ammable vapors and
liquids. Dust is combustible. Do not use
heater in areas with high dust content.
9. Minimum heater clearances from combustibles:
Sides 3 feet (1 m), Top 6 feet (1.8 m)
10. Keep heater at least 6 feet (1.8 m) from
propane tank(s).
11. Keep p ropane tank(s) bel ow 100º F
(38° C).
12. Before each use, check heater for leaks.
Never use an open ame 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.
112396-01D2
SAFETY
Continued
13. Check heater for damage before each
use. Do not use a damaged heater.
14. Check hose before each use of heater.
If highly worn or cut, replace with hose
specied by the manufacturer before using heater.
15. Do not alter heater. Keep heater in its
original state.
16. Do not use heater if altered.
17. Locate heater on stable and level surface
if heater is hot or operating.
18. Never block air inlet (top of base) or air
outlet (around top of shell) of heater.
19. Keep heater away from strong drafts, wind,
water spray, rain, or dripping water.
20. Never operate heater while sleeping or
unattended.
21. Keep children and animals away from
heater.
22. Never move, handle, or service a hot
or operating heater. Severe burns may
result. You must wait 15 minutes after
turning heater off.
PRODUCT IDENTIFICATION
Top
23. To prevent injury, wear gloves when handling heater.
24. Always remove heater from propane tank
after each use. Always store propane
tank outdoors in a well ventilated space
out of the reach of children. Never store
propane tank in a building, garage, or any
other enclosed area. Never store propane
tank near high heat, open ame, or where
temperatures exceed 120° F (49° C).
25. Turn off propane supply to heater when
not in use.
26. Use only original replacement parts. This
heater must use design-specic parts.
Do not substitute or use generic parts.
Improper replacement parts could cause
serious or fatal injuries.
27. Keep all connections and ttings clean.
Make sure propane tank valve outlet is
clean. Check the rubber “O” ring on the
heater inlet fuel connector for damage
before each use. Replace if worn or
damaged.
Shell
Base
Piezo Ignitor
Button
Hose/
Regulator/Fuel
Gas Connector
Assembly
Gas Inlet Connector
Figure 1 - Product Identication
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 heater for any shipping damage.
If heater is damaged call DESA Heating,
LLC at 1-866-672-6040 for replacement
parts before returning to dealer.
112396-01D 3
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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 burner.
The Automatic Control System: This system
causes the heater to shut down if the ame
goes out.
Automatic
Control Valve
Button
VENTILATION
WARNING: Provide at least an 120 square inch (774.2 cm2)
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 ventilation before running heater.
PROPANE SUPPLY
Propane gas and propane tank(s) are to be
furnished by the user.
Use this heater only with a propane vapor
withdrawal supply system. See Chapter 5
of the Standard for Storage and Handling of
Liqueed Petroleum Gas, ANSI/NFPA 58 and/
or CAN/CGA B149.2. Your local library or re
department will have this booklet.
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)
This heater is designed to operate with a
minimum 20 lb (9 kg) tank. You may need
two or more tanks or one larger tank in colder
weather. Use a 100 lb (45 kg) tank for longer
operation or in very cold weather. Less gas is
vaporized at lower temperatures. Your local
propane gas dealer will help you select the
proper supply system.
Temperature Number of tanks,
at Tank Location 100 lb (45 kg)
above 0° F (-18° C) 1
below 0° F (-18° C) 2
Smaller tanks can be used for limited run
times but it is recommended to use larger
tanks for optimum performance.
INSTALLATION
2. Connect hose to inlet connector (see
WARNING: Test all gas piping
and connections for leaks after
installation or servicing. Never
use an open ame 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. Wrench tighten the fuel connector nut into
the propane tank valve (see Figure 2).
Turn fuel connector nut counterclockwise
to tighten. Threads are left-handed.
Figure 3). Tighten rmly using a wrench.
3. Open propane supply valve on propane
tank(s) slowly. Note: if not opened slowly,
excess-ow check valve on propane tank
may stop gas ow. If this happens, you may
hear a click inside the regulator assembly,
this is the check valve closing. To reset the
excess-ow check valve, close propane
supply valve and open it again slowly.
4. Check all connections for leaks. Apply
mixture of liquid soap and water to gas
joints. Bubbles forming show a leak that
must be corrected.
5. Close propane supply valve.
SPECIFICATIONS
• Rating: High 25,000 Btu/Hr (26.375 Kj/Hr), Low 15,000 Btu/Hr (15.826 Kj/Hr)
• Fuel: Propane Vapor Only
• Fuel Consumption/Hour: Minimum 0.17 gal (0.64 liter), Maximum 0.27 gal (1.02 liter)
Minimum 0.70 lb (0.32 kg), Maximum 1.16 lb (0.53 kg)
• Supply Pressure (To Regulator): Maximum Tank Pressure, Minimum 275.8 kPa (40 psi)
• Regulator Outlet Pressure: High 103.4 kPa (15 psi), Low 34.4 kPa (5 psi)
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112396-01D4
OPERATION
WARNING: Review and un-
derstand the warnings in the
Safety section, page 2. They are
needed to safely operate this
heater. Follow all local codes
when using this heater.
TO START HEATER
1. Follow all installation, ventilation, and
safety information.
2. Locate heater on stable and level surface.
Make sure strong drafts do not blow on
heater.
3. Open propane supply valve on propane
tank(s) slowly.
4. Turn the heater regulator knob clockwise
to the HI position.
5. Push in and hold automatic control valve
button (see Figure 3). Push and release
piezo ignitor button. Keep pushing piezo
ignitor button until the burner lights. Hold
control knob down for a maximum of
10 seconds while attempting ignition. If
heater does not light, release control knob
and wait 30 seconds. Repeat step 5 to
start heater. Note: Keep hands and face
away from outlet (around top of shell) of
Propane Supply
Valve
Hose
Propane
Tank
Figure 2 - Connecting Heater to Propane
Tank
POL
Fitting
Regulator
heater while attempting to start heater.
After ignition, hold control knob down for
approximately 30 seconds. This activates
the automatic control system.
6. If burner will not light after repeated tries,
do not attempt to repair heater. Return
hea ter to nearest authorized service
center or call DESA Heating, LLC at
1-866-672-6040.
7. When burner remains lit, you can turn
the heater regulator knob clockwise to
the desired heat setting. If burner goes
out, turn off gas. Check fuel supply. If fuel
supply is OK, restart heater.
Piezo
Ignitor
Hose
Inlet
Connector
Figure 3 - Hose and Inlet Connector,
Automatic Control Valve Button and
Piezo Ignitor Button Locations
Automatic Control
Valve Button
TO STOP HEATER
1. Tightly close propane supply valve on
propane tanks by turning clockwise. Wait
15 minutes for the heater to cool before
handling heater.
2. Always remove gas supply hose from
heater and propane tank after each use.
TO RESTART HEATER
1. Wait ve minutes after stopping heater.
2. Repeat steps under To Start Heater.
STORAGE
age and Handling of Liquied Petroleum
CAUTION: Disconnect heater
from propane supply tank(s).
1. Do not store heater while attached to propane tank. Remove the gas supply hose
from the propane tank by turning the fuel
gas connector nut clockwise.
2. Store propane tank(s) in safe manner.
Refer to Chapter 5 of Standard for Stor-
112396-01D 5
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Gases, ANSI/NFPA 58 and/or CAN/CGA
B149.2. Follow all local codes. Always
store propane tanks outdoors. Never store
propane tank in an enclosed area.
3. Place plastic cover caps over brass ttings
on inlet connector and hose/regulator assembly.
4. 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.
INSPECTING BURNER
WARNING: Heater shell, top,
and heated air from heater is very
hot during operation. Gradually
move in closer to heater to ob-
serve ame color. Do not touch
heater shell or top. Do not get too
close to heated air from heater.
Severe burns could occur.
To check for correct burner flame, look
through the ventilation holes in the top of the
heater to see the burner ame. The burner
ame should be mostly blue with slight yellow coloring on the ends. If the burner ame
is mostly yellow, the primary air openings on
the burner tube under the heater base may
be blocked (see Figure 4).
2. Inspect heater before each use. Check
connections 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 quali-
ed service person.
1. Stop heater (see To Stop Heater, page 5)
and let cool.
2. Turn heater over to locate the primary air
openings on the burner tube (see Figure
4). Remove any debris blocking the primary air openings.
Burner
Tube
Figure 4 - Bottom View of Heater
Primary Air
Openings
You may have further questions about installa-
TECHNICAL SERVICE
tion, operation, or troubleshooting. If so, contact DESA Heating, LLC at 1-866-672-6040.
When calling please have your model and
serial numbers of your heater ready.
REPLACEMENT PARTS
Note: Use only original replacement parts.
This will protect your warranty coverage for
parts replaced under warranty.
PARTS UNDER WARRANTY
Contact authorized dealers of this product. If
they can’t supply original replacement part(s),
call DESA Heating, LLC at 1-866-672-6040.
When calling DESA Heating, LLC, have
ready:
• your name
• your address
• model and serial numbers of your heater
• how heater was malfunctioning
• purchase date
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You can also visit DESA Heating, LLC’s web
site at www.desatech.com.
Usually, we will ask you to return the part to
the factory.
PARTS NOT UNDER WARRANTY
Contact authorized dealers of this product. If
they can’t supply original replacement part(s),
call DESA Heating, LLC at 1-866-672-6040 for
referral information. A list of authorized dealers
can be found by visiting www.desatech.com.
When calling DES A Heating, LLC, have
ready:
• model and serial numbers of your heater
• the replacement part number
112396-01D6
5
6
2
1
4
7
8
3
TROUBLESHOOTING
WARNING: Never attempt to service heater while it is connected
to propane supply, operating, or hot. Severe burns can occur.
SYMPTOM
Burner fails to light
POSSIBLE CAUSE
1. Prop a n e suppl y v alve
closed on propane tank(s)
2. Blockage in burner/valve
assembly
3. Piezo ignition system not
sparking
REMEDY
1. Open propane supply valve
slowly
2.
Replace burner/valve assembly
3. Assur e ignitor electrode
gap is 0.120" (3.04 mm).
Check wire lead for damage. Replace piezo ignitor
and/or ignitor electrode as
necessary
Burner lights but goes out
when automatic control valve
button is released
Maximum burn rate is low
MODELS
TC101
TC102
TC103
TC104
TC105
1. Not enough warm-up time
2. Low gas pressure
3. Th er mocoupl e loos e or
needs to be replaced
4. Automatic control valve
needs to be replaced
1. Low gas pressure
2. Low fuel supply
3. Plugged gas orices
PARTS
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
NO.
PART NO. DESCRIPTION
1
101880-01 Shell Assembly
2
101864-01 Burner Assembly Kit
3
102445-01 Piezo Ignitor w/ Nut
4
103933-01 Thermocouple Bracket
5
101878-01 Electrode Ignitor
6
099236-01 Thermocouple Kit
7
LPA3025 Hose and Regulator
8
112392-01 Base Shield
PARTS AVAILABLE - NOT SHOWN
117069-04 Tradename Decal 1
111348-04 Warning Tag 1
111348-06 Warning Tag 1
111348-05 Operation Tag 1
111348-07 Operation Tag 1
112398-04 Rating Label 1
1.
Relight, hold automatic
control valve button in 45
seconds
2. Check propane tank(s) for
proper gas supply
3. Tighten connection or replace thermocouple
4. Replace automatic control
valve assembly
1. Check gas supply; check
regulator output
2.
Consult propane gas supplier
3. Replace burner assembly
QTY
1
1
1
1
1
1
1
Assembly
1
112396-01D 7
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WARRANTY
KEEP THIS WARRANTY
Model (
located on product or identication tag
Serial No. (
located on product or identication tag
Date Purchased __________________________
Keep receipt for warranty verication.
DESA HEATING, LLC LIMITED WARRANTIES
Standard Warranty: DESA Heating, LLC warrants this new product and any parts thereof to be free from
defects in material and workmanship for a period of one (1) year from the date of rst purchase from an
authorized dealer provided the product has been installed, maintained and operated in accordance with
DESA Heating, LLC’s warnings and instructions.
For products purchased for commercial, industrial or rental usage, this warranty is limited to 90 days from
the date of rst purchase.
Factory Reconditioned Products
Limited Warranty: DESA Heating, LLC warrants factory reconditioned products and any parts thereof
to be free from defects in material and workmanship for 30 days from the date of rst purchase from an
authorized dealer provided the product has been installed, maintained and operated in accordance with
DESA Heating, LLC’s warnings and instructions.
Terms Common to All Warranties
The following terms apply to all of the above warranties:
Always specify model number and serial number when contacting the manufacturer. To make a claim under
this warranty the bill of sale or other proof of purchase must be presented.
This warranty is extended only to the original retail purchaser when purchased from an authorized dealer,
and only when installed by a qualied installer in accordance with all local codes and instructions furnished
with this product.
This warranty covers the cost of part(s) required to restore this product to proper operating condition and
an allowance for labor when provided by a DESA Heating, LLC Authorized Service Center or a provider
approved by DESA Heating, LLC. Warranty parts must be obtained through authorized dealers of this product and/or DESA Heating, LLC who will provide original factory replacement parts. Failure to use original
factory replacement parts voids this warranty.
Travel, handling, transportation, diagnostic, material, labor and incidental costs associated with warranty
repairs, unless expressly covered by this warranty, are not reimbursable under this warranty and are the
responsibility of the owner.
Excluded from this warranty are products or parts that fail or become damaged due to misuse, accidents,
improper installation, lack of proper maintenance, tampering, or alteration(s).
This is DESA Heating, LLC’s exclusive warranty, and to the full extent allowed by law; this express warranty
excludes any and all other warranties, express or implied, written or verbal and limits the duration of any
and all implied warranties, including warranties of merchantability and tness for a particular purpose to one
(1) year on new products and 30 days on factory reconditioned products from the date of rst purchase.
DESA Heating, LLC makes no other warranties regarding this product.
DESA Heating, LLC’s liability is limited to the purchase price of the product, and DESA Heating, LLC shall
not be liable for any other damages whatsoever under any circumstances including indirect, incidental, or
consequential damages.
Some states do not allow limitations on how long an implied warranty lasts or the exclusion or limitation of
incidental or consequential damages, so the above limitation or exclusion may not apply to you.
This warranty gives you specic legal rights, and you may also have other rights which vary from state to state.
For information about this warranty contact:
New Products
) _____________________________
) __________________________
DESA Heating, LLC
2701 Industrial Drive
Bowling Green, KY 42101
www.desatech.com
1-866-672-6040
82 Akron Road
Toronto, Ontario M8W 1T2
(416) 255-5333
112396-01
Rev. D
06/08
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