Desa Tech TC100RNG Owner's Manual
NATURAL GAS
CONSTRUCTION
HEATER
OWNER’S MANUAL
®
Model: TC100RNG
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 ELECTRICAL 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.
TC100RNG
NATURAL GAS CONSTRUCTION HEATER
SAFETY
INFORMATION
WARNINGS
WARNING ICON G 001
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.
Natural Gas: Natural gas has a distinctive
odor. This odor helps you detect a natural
gas leak. However, the odor may fade. Natural 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.
• Install and use heater with care. Follow all local ordinances and codes. In
the absence of local ordinances and
codes, refer to the National Fuel Gas
Code Handbook, NFP A54/ANSI Z223.1
and the Natural Gas Installation Code,
CAN/CGA B149.2. This instructs on the
safe storage and handling of flammable
gases.
• Use only with natural gas. Do not attempt to use with LP gas.
• Provide adequate ventilation. Before
using heater, provide at least a threesquare-foot opening of fresh, outside
air for each 100,000 Btu/Hr of rating.
This heater produces carbon monoxide,
which is listed by the State of California as a reproductive toxin under Proposition 65.
• For indoor use only. Do not use heater
outdoors.
• Do not use heater in occupied dwellings or in living or sleeping quarters.
• Do not use heater below ground level.
• Keep appliance area clear and free from
combustible materials, gasoline, paint
thinner, and other flammable vapors
and liquids. Do not use heater in areas
with high dust content.
• Minimum heater clearances from
combustible materials:
Sides: 6 Ft. Top: 5 Ft.
• Check heater for damage before each
use. Do not use a damaged heater.
• Check hose (if used) before each use
of heater. If highly worn or cut, replace
before using heater.
• Locate heater on stable and level surface if heater is hot or operating.
• Not intended for use on finished floors.
• Never block air inlet (bottom of shell)
or air outlet (top of shell) of heater.
• Keep heater away from strong drafts,
water spray, rain, or dripping water.
• Keep children and animals away from
heater.
• Do not leave heater unattended.
• Never move, handle, or service a hot
or operating heater. Severe burns may
result. You must wait 20 minutes after
turning heater off.
• To prevent injury, wear gloves when
handling heater.
• Never attach duct work to heater.
• Do not alter heater. Keep heater in its
original state.
• Do not use heater if altered.
• Turn off natural gas supply to heater
when not in use.
• 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 valve inlet) 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.
4. Hose not included. User must supply
hose or flexible connector.
THEORY OF
OPERATION
The Fuel System: The gas supply attaches to the heater by a minimum 3/4 inch
i.d. hose or flexible connector. User must
supply hose or flexible connector. The length
should be no more than 10 feet long. The
natural gas moves through the regulator and
out the nozzle.
The Ignition System: The piezo ignitor
lights the pilot fuel supply.
The Automatic Control System: The
automatic control valve shuts off the heater
if the flame goes out.
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OWNER’S MANUAL
PRODUCT
IDENTIFICATION
Shell
Nozzle
Main Burner Tube
Automatic
Control Valve
Button
Figure 1 - Product Identification
NATURAL GAS
SUPPLY
The user must furnish the natural gas supply
and the connections to the heater.
Regulate the natural gas supply down from
a minimum 6 inches water column to a
maximum of 1/2 psi. The natural gas supply
capacity should be able to supply a minimum of 100 cubic feet of gas at pressure for
each heater connected to the system.
Consult your natural gas supplier for proper
sizing of the natural gas supply lines.
Follow all local ordinances and codes. In the
absence of local ordinances and codes, refer
to the National Fuel Gas Code Handbook,
NFPA54/ANSI Z223.1 and the Natural gas
Installation Code, CAN/CGA B149.2.
Top
Emitter
Ignitor Electode
Pilot Burner
Thermocouple
Regulator
Piezo Ignitor Button
Valve Inlet
Base
VENTILATION
WARNING: Provide at least a
3 square foot 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.
FRESH OUTSIDE AIR OPENING
REQUIREMENTS
HEATER SQUARE FOOT
SIZE OPENING
100,000 Btu/Hr 3.0
SPECIFICATIONS
Rating (Btu/Hr) 100,000
Fuel Natural Gas Only
Fuel Consumption
Cubic Feet/Hour 97
Supply Pressure (To Regulator)
Maximum 1/2 psi
Minimum 6" w.c.
Manifold Pressure 4" w.c.
Weight (Pounds) 23
Shipping Weight (Pounds) 27
Size - L x W x H (Inches) 16 x 16 x 29.5
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.
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 natural gas supply system.
2. Install plumbing to a low pressure natural gas source. The source must be regulated to 1/2 psi maximum. The plumbing must be a minimum 3/4 inch i.d.
hose or flexible connector not over 10
feet long.
Valve
Inlet
Hose
Figure 2 - Hose and Valve Inlet
Continued
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3
TC100RNG
NATURAL GAS CONSTRUCTION HEATER
INSTALLATION
Continued
3. Connect the hose to the heater at the 1/2
inch SAE flare fitting at the valve inlet.
WARNING: 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 that must be corrected. Correct all leaks at once.
Tighten all fittings with a wrench
4. Open natural gas supply valve slowly.
5. Check all connections for leaks.
6. Close natural gas supply valve.
OPERATION
WARNING: Review and understand the warnings in the
Safety Information Section. They
are needed to safely operate this
heater. Follow all local codes
when using this heater.
5. Push in and hold control valve knob
while pushing red piezo ignitor button.
Ignitor button may have to be pushed
again (3 to 8 times) until pilot lights.
Note:
Hose may be filled with air. If
so, allow 20 seconds for gas to reach
pilot before pushing ignitor button.
6. After pilot lights, keep control valve
knob depressed for at least 30 seconds,
then release.
7. If pilot light goes out, repeat steps 4
through 6.
8. When pilot remains lit, start heater by
slowly turning control valve knob 1/4
turn to left to ON position (see Figure 4).
PILOT
OFF
ON
FROM “PILOT” POSITION
Figure 4 - ON Position
TURN OFF
SLIGHT PUSH TO
OFFON
LIGHT
FULL PUSH TO
TO STOP HEATER
1. Close valve on gas supply.
2. Turn control valve knob 1/4 turn to
right to PILOT position. Slightly push
in knob and turn 1/4 turn to right to OFF
position (see Figure 6).
PILOT
FROM “PILOT” POSITION
ON
SLIGHT PUSH TO
FULL PUSH TO
TURN OFF
LIGHT
Figure 6 - OFF Position
OFF
OFFON
TO RESTART HEATER
1. W ait five minutes after stopping heater .
2. Restart heater by following steps under “To Start Heater.”
STORAGE
CAUTION: Disconnect heater
from natural gas supply.
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 gas supply slowly.
4. Turn control valve knob 1/4 turn to left
to PILOT position (see Figure 3).
PILOT
ON
OFF
FROM “PILOT” POSITION
SLIGHT PUSH TO
TURN OFF
FULL PUSH TO
LIGHT
Figure 3 - PILOT Position
OFFON
Control Valve Knob
Figure 5 - Control Valve Knob and
Piezo Ignitor Button Locations
Piezo
Ignitor
Button
1. Place plastic cover cap over brass fitting on inlet connector.
2. Store in dry, clean, and safe place.
3. When taking heater out of storage, always check inside of heater. Insects and
small animals may place foreign objects
in heater. Keep inside of heater free from
combustible and foreign objects.
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