Desa RCLP375B User Manual

CANADIAN PROPANE

CONSTRUCTION

HEATER

OWNER’S MANUAL

LP-PFA/PV 008LP 375

Model: RCLP375B

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.

CANADIAN MODEL RCLP375B
PROPANE CONSTRUCTION HEATER

SAFETY
INFORMATION

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 for use as a construc­tion heater in accordance with ANSI
Z83.7•CGA2.14. 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
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 Natural Gas Installation Code,
CAN/CGA B149.2. This instructs 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/
NFP A 70 or 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.

• Use only a three-prong, grounded
extension cord.

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

• Use only propane gas set up for va­por withdrawal.

• Provide adequate ventilation. Before
using heater, provide at least a three­square-foot (0.28 m2) 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. Propane gas is heavier than air.

If a leak occurs, propane gas will sink
to the lowest possible 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
combustibles:
Outlet: 8 Ft. (2.5 m)Sides: 2 Ft. (60
cm) Top: 6 Ft. (2 m) Rear: 2 Ft.
(60 cm)

• Keep heater at least six feet (2 m)
from propane tank(s). Do not point
heater at propane tank(s) within 20
feet (6 m).

• Keep propane tank(s) below 100°F
(38°C).

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

• Check hose 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 (rear) or air out­let (front) of heater.

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

• Do not leave heater unattended.

• Keep children and animals away
from heater.

• Never move, handle, or service a hot,
operating, or plugged-in heater. Se­vere burns may result. Wait 20 min­utes after turning heater off.

• T o 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 propane supply and unplug
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.

• Do not adjust regulator below 7 psig
(48 kPa) or above 20 psig (138 kPa).

2

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OWNER’S MANUAL

PRODUCT
IDENTIFICATION

Hot Air
Outlet
(Front)

Outer Shell

On/Off Switch

Inlet Connector

Figure 1 - RCLP375B Model

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

Power
Cord

Hose /
Regulator
Assembly

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.

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.

Combustion
Chamber

Clean
Heated
Air Out
(Front)

DSI

Nozzle

Air For Combustion Air For Heating

Air For Combustion

Figure 2 - Cross Section Operational View

Ignitor

Fan

Solenoid
Valve

Air For Heating

Motor

Cool Air In
(Back)

Power
Cord

Hose/
Regulator
Assembly

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3

CANADIAN MODEL RCLP375B
PROPANE CONSTRUCTION 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

Liquefied Petroleum Gas, ANSI/NFPA 58

and/or CAN/CGA B149.2. Your local li-
brary or fire 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)
The chart below shows the number of 100-

pound (45 kg) tanks needed to run this
heater.

Do not operate this product with any tank
smaller than 100 pounds (45 kg).

Temperature °F(°C)
At Tank 100 lb.(45 Kg)

40 (4.4) 3
32 (0) (Use larger tank

20 (-6.7) (Use larger tank

9(-18) (Use larger tank

-10 (-23) (Use larger tank

-20 (-29) (Use larger tank

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 (-29°C).

No. of Tanks

below 40°F [4.4°C])

below 40°F [4.4°C])

below 40°F [4.4°C])

below 40°F [4.4°C])

below 40°F [4.4°C])

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 installing 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 above).

2. Connect POL fitting on hose/regulator
assembly to propane tank(s). Turn POL
fitting counterclockwise into threads on
tank. Tighten firmly using

wrench.
lator with black adjustment knob point­ing down. Pointing adjustment knob
down protects regulator from weather
damage.

3. Connect hose to inlet connector.
Tighten firmly using a wrench.

IMPORTANT:

may be used if needed. Install extra
hose or piping between hose/regulator
assembly and propane tank. You must
use the regulator supplied with the
heater.

Supply
Valve

Propane
Tank

IMPORTANT:

POL Fitting

Tighten regu-

Extra hose or piping

Hose

Regulator

Adjustment Knob
(pointing down)

Hose

Inlet
Connector

Figure 4 - Hose and Inlet Connector

4. Open propane supply valve on propane
tank(s) slowly.

Note:

If not opened
slowly , excess-flow check valve on pro­pane tank may stop gas flow. If this
happens, close propane supply valve
and open again slowly.

5. Adjust regulator between 7 and 20 psig
(48 and 138 kPa) (see Figure 5).

Note:

Higher regulator setting will allow
heater to produce more heat.

WARNING: Do not adjust
regulator below 7 psig (48 kPa) or
above 20 psig (138 kPa). Heater
may not run properly.

I

N

C

R

E

A

S

E

5
10
15
20

Regulator

5

5

10

10

15

15

20

20

Figure 5 - Adjustable Regulator Set At 7
psig (48 kPa)

6. Check all connections for leaks.

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. Correct all leaks at
once.

Figure 3 - Regulator With Adjustment
Knob Pointing Down

4

7. Close propane supply valve.

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OWNER’S MANUAL

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 (0.28 m2) 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 (1.05 m2).
Provide extra fresh air if more heaters are
being used.

OPERATION

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.

6. Make sure regulator is set between 7
and 20 psig (48 and 138 kPa).

Note:

Higher regulator setting will al-

low heater to produce more heat.

WARNING: Do not adjust

regulator below 7 psig (48 kPa) or
above 20 psig (138 kPa) . Heater
may not run properly.

7. Turn on/off switch to the ON position.
Heater will start within six seconds.

Note:

If heater does not start, turn on/
off switch to the OFF position. W ait ten
seconds for safety control to reset, then
try again.

TO STOP HEATER

1. Tightly close propane supply valve on
propane tank(s). Allow heater to burn
remaining fuel in hose.

2. Wait a few seconds. Heater will burn
gas left in supply hoses.

3. Turn on/off switch to the OFF position.

4. Unplug heater.

STORAGE

CAUTION: Disconnect heater

from propane supply tank(s).

1. Store propane tank(s) in safe manner.
See Chapter 5 of Standard for Storage

and Handling of Liquefied Petroleum
Gases, ANSI/NFPA 58 and/or CAN/
CGA B149.2. Follow all local codes.

2. Place plastic cover caps over brass fit­tings on inlet connector and

hose/regulator assembly.

3. Store in dry, clean, and safe place. Do
not store hose/regulator assembly in­side heater combustion chamber.

4. 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.

MAINTENANCE

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 into front or rear of heater.

3. Plug power cord of heater into a three­prong, grounded extension cord. Exten­sion cord must be at least six feet (2 m)
long. Extension cord must be UL/CGA
listed.

Extension Cord Size Requirement

Up to 50 feet (15 m) long, use 18 AWG
rated cord.

51 to 100 feet (16 to 30 m) long, use 16
AWG rated cord.

101 to 200 (31 to 60 m) feet long, use
14 AWG rated cord.

4. Plug extension cord into a 120 volt/60
hertz, three-hole, grounded outlet.

5. Open propane supply valve on propane
tank(s) slowly.
slowly , excess-flow check valve on pro­pane tank may stop gas flow. If this
happens, close propane supply valve
and open again slowly.

Note:

If not opened

TO RESTART HEATER

If safety control stops gas flow to heater,
motor will continue to run.

To restart heater:

1. Turn on/off switch to the OFF position.

2. Wait ten seconds, then turn on/off
switch to the ON position.

If heater does not restart

• Check manual valves (if any) and

supply valves (on propane tank).
Make sure they are open.

• Check fuel level in propane tank(s).

If fuel level is too low, contact local
propane gas company.

If heater still does not restart, contact your
local service center.

WARNING: Never service
heater while it is plugged in, con­nected to propane supply, oper­ating, or hot. Severe burns and
electrical shock can occur.

1. Keep heater clean. Clean heater annu­ally or as needed to remove dust and
debris. If heater is dirty or dusty , clean
heater with a damp cloth.

2. Inspect heater before each use. Check
connections for leaks. Apply mixture
of liquid soap and water to connections.
Bubbles forming show a leak. 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 agency.

5. Keep inside of heater free from com­bustible and foreign objects.

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5

CANADIAN MODEL RCLP375B
PROPANE CONSTRUCTION HEATER

SERVICE
PROCEDURE

WARNING: Never service
heater while it is plugged in, con­nected to propane supply, oper­ating, or hot. Severe burns and
electrical shock can occur.

CLEANING FAN

Clean fan every 500 hours of operation or as
needed.

1. Remove screws on side cover using
5/16" nut-driver.

2. Remove side cover.

3. Detach the five motor wires from parts
under heater shell. Be sure to detach
only wires coming from motor.

The five motor wires are:

• white wire—to terminal board

• black wire—to terminal board

• blue wire—to thermal switch wire

• orange wire—to solenoid valve

• green wire—to grounding screw

on shell

Thermal
Switch Wire

Figure 6 -

Mounting
Bolts

Figure 7 - Location of Fan and Motor

LP-PFA/P 024

Grounding
Screw

Terminal
Board

Solenoid
Valve

Location of Motor Wires

Motor
Mount

Motor
Wires

4. Remove fan guard from rear of heater.

5. Reach into rear of heater shell. Care­fully pull motor wires through hole in
bottom of shell.

Note:

Pull wires

through hole one at a time.

6. Remove nuts and mounting bolts hold­ing motor mount to shell. Use 3/8" nut­driver and 7/16" wrench.

7. Carefully pull motor and fan out of
shell.

IMPORTANT:

Be careful not to dam­age fan. Do not set motor and fan down
with the weight resting on fan. This
could damage fan pitch.

8. Turn motor and fan around. Place mo­tor and fan into shell backwards.

Note:

Motor will go into shell first (see Fig­ure 8).

Rear
Mounting
Hole

First
Hole

LP-PFA/P 026

Figure 8 - Fan and Motor Turned Around

9. Line up rear mounting holes in shell
with first hole on each side of motor
mount (see Figure 8).

Note:

When

holes are lined up, fan should be out­side of shell.

10. Holding mounting bolt, carefully reach
through fan blades into rear of heater.
Be careful not to damage fan pitch. In­sert bolt through motor mount and
shell. With free hand, attach nut finger
tight. Repeat process for other mount­ing hole.

11. Use 1/8" hex wrench to loosen setscrew
which holds fan to motor shaft (see Fig­ure 9).

12. Slip fan off motor shaft.

13. Clean fan using soft cloth moistened
with kerosene or solvent.

14. Dry fan thoroughly.

15. Replace fan on motor shaft. Make sure
setscrew is touching back of flat sur­face on motor shaft (see Figure 10).

Fan

Setscrew

Motor shaft

Figure 9 - Fan, Motor Shaft, and Setscrew
Location

Figure 10 - Fan Cross Section

FAN LP-PFA/P 023A

Fan

Hub

Motor Shaft

Setscrew

FAN CROSS SECTION LP-PFA/P 013

16. Place setscrew on flat of shaft. Tighten
setscrew firmly to 40-50 inch-pounds
(5.6 N•m).

17. Remove two nuts and bolts securing
motor mount to shell.

18. Pull motor and fan from shell. Turn
motor and fan around. Carefully place
back in shell.

Note:

Fan will go into

shell first.

19. Line up mounting holes in shell with
holes on motor mount. Replace four
bolts through shell and motor mount.
Insert bolts from outside of heater.
Tighten nuts firmly.

20. Route motor wires through hole in bot­tom of shell (see Figure 7).

21. Connect motor wires as follows (see
Figure 6):

• white wire—to terminal board.

Note:

Attach to empty connector on

white wire side of terminal board.

• black wire—to terminal board.

Note:

Attach to empty connector on

black wire side of terminal board.

• blue wire—to thermal switch wire

• orange wire—to solenoid valve

• green wire—to grounding screw on

shell

22. Replace side cover.

23. Replace fan guard.

6

103910

WIRING DIAGRAMS

OWNER’S MANUAL

Ignitor

Orange

DSI

Control

Blue
White

Black
Blue

Black

Green

Solenoid

Valve

Blue

Connector

T

Thermal

Switch

Figure 11 - Wiring Diagram

Orange

Orange

Blue

Connector

Ignitor

Solenoid

Green

Valve

Blue

Motor

White White

Black Black

Terminal

Board

Orange

Blue

Green

Black

T

Power

Cord

On/Off

Switch

103910

Black

Green

Direct Spark

Ignitor

White

Blue

Thermal Switch

Blue

Centrifugal

Switch

Black

Motor

White

Green

Green

Line Ground Neutral

Figure 12 - Electrical Ladder Diagram

7

White

CANADIAN MODEL RCLP375B
PROPANE CONSTRUCTION HEATER

SPECIFICATIONS

Output Rating (Btu/Hr)
Fuel
Fuel Consumption

Gallons (liters)/Hour
Pounds (kg)/Hour

Supply Pressure To Regulator

Minimum (for purposes of
input adjustment)

Maximum
Regulator Outlet Pressure
Hot Air Output in CFM (m3/min)
Motor
Electric Input
Amperage
Ignition
Weight in Pounds (kg)

Heater

Shipping

168,800 to 332,325 (160,000 to 315,000 kJ/Hr)
Propane Vapor Only

1.8 (6.8)Minimum/3.6 (13.6)Maximum

7.4 (3.35)Minimum/15.1 (6.85)Maximum

25 psig (172 kPa)
Tank Pressure

7-20 psig (48-138 kPa)
1500 (42.5)
1725 RPM, 1/5 HP
120 V/60 Hz

4.2
Direct Spark

42 (19)
49 (22)

Size - L x W x H in Inches (cm)

34 x 13 x 19.5 (86.4 x 33 x 49.5)

8

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