Desa Tech 100-RA, SPC-100, SPC-100RA Owner's Manual

SCHEU PRODUCTS COMPANY, INCORPORATED

Mail: P.O. Box 250, Upland, CA 9l785

Plant: 8855 Baker Ave.,

Rancho Cucamonga, CA 91730

Telephone: [phone]

ASSEMBLY AND OPERATING INSTRUCTIONS

MODELS 100-RA/SPC-100RA

CONSTRUCTION HEATER

YOUR SAFETY IS IMPORTANT TO YOU AND TO
OTHERS, SO PLEASE READ THESE INSTRUCTIONS
BEFORE YOU OPERATE THIS HEATER.

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, AND
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.

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.

OPERATING INFORMATION
Intended use is primarily the temporary heating of
buildings under construction, alteration or repair.

WARNING

NOT FOR HOME OR RECREATIONAL VEHICLE USE.

This is a propane, direct-fired heater.
Propane is heavier than air. If propane leaks from a
connection or fitting, it sinks to the floor, collecting there with
the surrounding air, forming a potentially explosive mixture.
Obviously, propane leaks should be avoided, so set up the
propane supply with utmost care. Leak check new
connections or reconnections with a soap and water
solution and follow all connection instructions herein. Also,
ask your propane dealer for advice on the propane supply
installation and ask him to check it if there are any
questions. Direct-Fired means that all of the combustion
products enter the heated space. Even though this heater
operates very close to 100 percent combustion efficiency, it

still produces small amounts of carbon monoxide. Carbon
monoxide (called CO) is toxic.

CO can build up in a heated space and failure to provide
adequate ventilation could result in death. The symptoms of
inadequate ventilation are:

headache
dizziness
burning eyes and nose
nausea

dry mouth or sore throat
So, be sure to follow advice about ventilation in these
operating instructions.

SAFETY PRECAUTIONS

1. Check the heater thoroughly for damage. DO NOT
operate a damaged heater.

2. DO NOT modify the heater or operate a heater which
has been modified from its original condition.

3. Use only propane gas.

4. Use only VAPOR WITHDRAWAL propane supply. If there
is any question about vapor withdrawal, ask your
propane dealer.

5. Mount the propane cylinders vertically (shutoff valve up).
Secure them from falling or being knocked over and
protect them from damage.

6. Locate propane containers at least 7 ft. from the heater
and do not direct exhaust toward containers.

7. Use only the hose and regulator assembly provided
with the heater. Inspect hose assembly before each use
of the heater. If there is excessive abrasion or wear, or
hose is cut, replace with hose assembly listed on parts
list before using heater.

8. For indoor use only. Area must be well ventilated.
Provide minimum openings of 2 sq. ft. near the floor and
2 sq. ft. near the ceiling (also see "Operating
Information").

9. If at any time gas odor is detected, IMMEDIATELY
DISCONTINUE operation until the source of gas has
been located and corrected.

10. Install the heater such that it is not directly exposed to
water spray, rain and/or dripping water or wind.

11. Maintain minimum clearance from normal combustible
material (like paper) of 6 ft. in all directions. Locate 10 ft.
from canvas or plastic tarpaulins or similar coverings
and secure them to prevent flapping or movement due
to wind action.

12. Operate only on a stable, level surface.

13. Do not use on combustible floors.

14. Caution: Do not touch heater surface during operation
or for 30 minutes after shutdown. It can cause serious
burns.

15. Do not move, handle or service while hot or burning.

16. Use only in accordance with local codes or, in the
absence of local codes, with the Standard for the
Storage and Handling of Liquefied Petroleum Gases
ANSI/NFPA 58-1998.

OPERATING INSTRUCTIONS

PREPARING FOR OPERATION

1.Check the heater for possible shipping damage. If any
is found, immediately notify your dealer.

2.Follow all of the "Safety Precautions" on page 1,
"Propane Fuel Information on page 4 and "Operating
Information" on page 1.

3.Connect the POL fitting of hose and regulator assembly
to the propane cylinder by rotating the POL nut counter
clock wise into the propane cylinder's valve outlet and
securely tighten with a wrench.

4.Connect the hose to the heater.

5.Securely tighten all gas connections.

6.Open the cylinder's gas valve and check all gas
connections with a soap and water solution. DO NOT
USE A FLAME.

START

1.WARNING: BEFORE LIGHTING PILOT, fully close the
ball valve (turn handle perpendicular to valve body).

2.Fully open the valve on the propane cylinder.

3.Depress red button on safety pilot valve admitting gas to
the pilot. Push and release the piezo button until the
pilot lights, multiple tries may be necessary. Alternately
place a lighted match near the pilot (pilot is above cutout
in the middle pan). If the hose is filled with air, allow a
few minutes for gas to reach the pilot.

4.When the pilot lights, continue to hold the button on the
safety pilot valve depressed for 30 seconds, then
release.

5.If the pilot goes out, wait 5 minutes and repeat the start
procedure.

6.When the pilot remains lit, open the ball valve to light the
main burner (turn handle parallel with valve body) .

CAUTION: Adjusting burn rate to lower than design can
cause sooting.

STOP

1.Securely close valve on the propane cylinder.

2.Close the ball valve (handle perpendicular to valve body).

RESTART AFTER SAFETY SHUTDOWN

1.Securely close valve at propane cylinder.

2.Wait 5 minutes.

3.Restart following "Start" procedure.

CAUTION

When the heater is to be operated in the presence of other
people the user is responsible for properly acquainting
those present with the safety precautions, and of the
hazards involved.

SERVICING

A hazardous condition may result if a heater is used that
has been modified or is not functioning properly. When the
heater is working properly:

* The flame is contained within the heater.
* The flame is essentially blue.
* There is no strong disagreeable odor, eye burning or

other physical discomfort.

* There is no smoke or soot internal or external to the

heater.

* There are no unplanned or unexplained shutdowns of

the heater.

The parts list shows the heater as it was constructed. Do
not use a heater which is different from that shown. In this
regard, use only the hose, regulator and cylinder
connection fitting (called a POL fitting) supplied with the
heater. Do not use alternates. For this heater, the regulator
must be set to supply 11" W.C. pressure. If there is any
uncertainty about the regulator setting, have it checked.

A heater which is not working right must be repaired, but
only by a trained, experienced service person. Contact the
factory for the service center closest to you, phone number
[phone].

You may also obtain in-warranty or out-of-warranty service
by returning the product postage prepaid to :

Scheu Products Company

8855 Baker Avenue

Rancho Cucamonga, CA 91730

In-warranty products returned to the Service Department will
be repaired with no charge for either parts or labor and will
be returned to you postage prepaid. Please include a brief
statement indicating date, place of purchase, the nature of
the problem and proof of purchase.

MAINTENANCE AND STORAGE

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,
otherwise damaged, replace it with part number 6681.

3.Turn off the gas at the 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 LP-gas supply cylinder(s) and the heater
must be disconnected 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 58-1998.

Page 2

Out-of-warranty products returned to the Service
Department will be repaired with a charge for parts and
labor and will be returned to you postage collect.