Desa RLP375A, BLP375A User Manual

PROPANE

CONSTRUCTION

HEATERS

OWNER’S MANUAL

Heater Size: 375,000 Btu/Hr - A Series

Models: BLP375A, RLP375A

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.

375,000 BTU/HR - A SERIES
PROPANE CONSTRUCTION HEATER

SAFETY
INFORMA TION

WARNINGS

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 and approved for use
as a construction heater under ANSI Z83.7.
The 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! 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 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.

• 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 Liquefied Petroleum Gas,
ANSI/NFPA 58 and the Propane Instal­lation Code, CAN/CGA B149.2. This in-

structs on the safe storage and handling
of propane gases.

• Use only the electrical voltage and fre­quency specified on model plate. The
electrical connections and grounding of
the heater shall follow the National

Electric Code, ANSI/NFPA 70 or the
Canadian Electric Code, Part 1.

• Electrical grounding instructions — This
appliance is equipped with a three-prong
(grounding) plug for your protection
against shock hazard and should be
plugged directly into a properly grounded
three-prong receptacle or extension cord.

• Approved by the New York City Fire
Department under certificate of Ap­proval #4953. To be used only at con­struction site with applicable New York
City codes, regulations, rules, direc­tives, permits, etc.

• This product has been approved for use
in the Commonwealth of Massachusetts.

• For indoor use only. Provide adequate
ventilation.

• Keep heater away from strong drafts,
wind, water spray, rain, or dripping water .

• Use only in well-vented areas. 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.

• Do not use heater outdoors or in occu­pied dwellings.

• Do not use heater in living or sleeping
quarters.

• Keep appliance area clear and free from
combustible materials, gasoline, paint
thinner, and other flammable vapors and
liquids. Dust is combustible. Do not use
heater in areas with high dust content.

• Check heater for damage before each
use. Do not use a damaged heater.

• Use only propane gas set up for vapor
withdrawal.

• Keep propane tank(s) below 100° F.

• Do not use heater in a basement or be­low ground level. Propane gas is
heavier than air. If a leak occurs, pro­pane gas will sink to the lowest pos­sible level.

• Use only the hose and factory regula­tor provided with the heater.

• Check hose before each use of heater .
If highly worn or cut, replace with
hose specified by manufacturer before
using heater.

• Do not alter heater. Keep heater in its
original state.

• Do not use heater if altered.

• Keep heater at least six feet from pro­pane tank(s). Do not point heater at pro­pane tank(s) within 20 feet.

• Minimum heater clearances from com­bustibles:
Outlet: 8 Ft. Sides: 2 Ft.
Top: 6 Ft. Rear: 2 Ft.

• Locate heater on stable and level sur­face if heater is hot or running.

• Keep children and animals away from
heater.

• Turn off propane supply and unplug
heater when not in use.

• Never block air inlet (rear) or air outlet
(front) of heater.

• Never move, handle, or service a hot,
operating, or plugged-in heater.

• Never attach duct work to front or rear
of heater.

• 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.

• Do not adjust regulator below 7 psig
or above 20 psig.

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OWNER’S MANUAL

PRODUCT
IDENTIFICATION

Hot Air Outlet
(Front)

Outer Shell

On/Off Switch

Handle

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.

Fan
Guard

Inlet Connector

BLP& VLP375 LP-PFA/PV 008C

Figure 1 - 375,000 Btu/Hr Models

Power Cord

Hose /Regulator
Assembly

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375,000 BTU/HR - A SERIES
PROPANE CONSTRUCTION HEATER

THEORY OF OPERATION

The Fuel System: The hose/regulator
assembly attaches to the propane gas sup­ply. The propane gas moves through the
solenoid valve and out the nozzle.

The Air System: The motor turns the fan.
The fan pushes air into and around the
combustion chamber. This air is heated and
provides a stream of clean, hot air.

Combustion
Chamber

Clean
Heated
Air Out
(Front)

DSI

Air For Combustion Air For Heating

Figure 2 - Cross Section Operational View

The Ignition System: The direct spark

ignitor (DSI) sends voltage to the ignitor.
The ignitor ignites the fuel and air mixture.

The Safety Control System: This sys­tem causes the heater to shut down if the
flame goes out. The motor will continue to
run, but no heat is produced.

Ignitor

Nozzle

Fan

Solenoid
Valve

Motor

Hose/Regulator
Assembly

Cool Air
In (Back)

Power
Cord

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

Liquefied Petroleum Gas, ANSI/NFPA 58
and the Propane Installation Code CAN/
CGA B149.2. Your local library or fire de-

partment will have these booklets.
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 number of 100­pound tanks needed to run this heater.

Do not operate this product with any tank
smaller than 100 pounds.

Temperature (°F) At Tank

40° 32° 20° 0° -10° -20°

Number 3 (Use larger tank below
of tanks 40°F)

Less gas is vaporized at lower temperatures.
You may need a larger tank in colder weather.
Your local propane gas dealer will help you
select the proper supply system. The mini­mum surrounding air temperature rating for
each heater is -20°F.

VENTILATION

WARNING: Follow the mini­mum fresh, outside air ventila­tion requirements. If proper fresh,
outside air ventilation is not pro­vided, carbon monoxide poison­ing can occur. Provide proper
fresh, outside air ventilation be­fore running heater.

Provide at least three square feet of fresh,
outside air for each 100,000 Btu/Hr of rat­ing. This heater requires a fresh air opening
of at least 11.25 square feet. Provide extra
fresh air if more heaters are being used.

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