Desa PRV125EDI User manual

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.

PORTABLE

FORCED

AIR HEATER

OWNER’S MANUAL

125 SIDE PFA/PV 004

Model PRV125EDI

Safety Information.........................................................................3

Introduction ...................................................................................4

Product Identiﬁcation .................................................................... 4

Unpacking......................................................................................4

Assembly .......................................................................................5

Theory of Operation ......................................................................6

Fuels ..............................................................................................6

Ventilation .....................................................................................7

Operation .......................................................................................7

Storage ........................................................................................... 8

Preventative Maintenance Schedule..............................................8

Troubleshooting.............................................................................9

Service Procedures ........................................................................ 10

Upper Shell Removal ..............................................................10

Fan........................................................................................... 10

Air Output, Air Intake, and Lint Filters .................................. 11

Pump Pressure Adjustment .....................................................11

Fuel Filter ................................................................................ 12

Spark Plug ............................................................................... 12

Nozzle .....................................................................................13

Pump Rotor ............................................................................. 14

Speciﬁcations................................................................................. 15

Wiring Diagram.............................................................................15

Accessory ......................................................................................15

Illustrated Parts Breakdown and Parts List....................................16

Wheels and Handles................................................................ 17

Burner Head Assembly ...........................................................18

Motor and Pump Assembly ....................................................18

Warranty and Repair Service......................................................... Back Cover

CONTENTS SECTION PAGE

SAFETY

INFORMATION WARNINGS

IMPORTANT: Read this owner’s manual carefully and completely

beforetryingtoassemble,operate,orservicethisheater.Improperuse

of this heater can cause serious injury or death from burns, ﬁre,

explosion, electrical shock, and carbon monoxide poisoning.

Carbon Monoxide Poisoning: Early signs of carbon monoxide poisoning

resemble the ﬂu, with headaches, dizziness, and/or nausea. If you have these signs,

theheatermaynotbeworkingproperly.Getfreshairatonce!Haveheaterserviced.

Some people are more affected by carbon monoxide than others. These include

pregnant women, persons with heart or lung disease or anemia, those under the

influence of alcohol, and those at high altitudes.

Makecertainyoureadandunderstandallwarnings.Keepthismanualforreference.

It is your guide to safe and proper operation of this heater.

DANGER

Carbon monoxide poisoning may lead to death!

•Use only kerosene or No. 1 fuel oil to avoid risk of ﬁre or explosion. Never use

gasoline, naphtha, paint thinners, alcohol, or other highly ﬂammable fuels.

•Never use heater where gasoline, paint thinner, or other highly ﬂammable

vapors are present.

•Follow all local ordinances and codes when using heater.

•Never use heater without properly installed vent piping and regulator.

•This heater must have fresh air for proper operation. If not, poor fuel combus-

tion and improper venting of flue gases will result. Carbon monoxide poison-

ing from backed-up flue gases could occur.

•Use only in places free of ﬂammable vapors or high dust content.

•Use only with the electrical voltage and frequency speciﬁed on model plate.

•Use only a three-wire, grounded (earthed) extension cord.

•Minimum heater clearances from combustibles:

Outlet: 8 Ft. (250 cm) Sides, Top, and Rear: 4 Ft. (188 cm)

•Locate heater on a stable and level surface while hot or running or a ﬁre may

occur.

•When moving or storing heater, keep heater in a level position or fuel spillage

may occur.

•Keep children and animals away from heater.

•Unplug heater when not in use.

•When used with thermostat, heater may start anytime.

•Never use heater in living or sleeping areas.

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

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

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

INTRODUCTION

Fuel Cap

Lower

Shell

Power Cord

Figure 1 - PRV125EDI

Hot Air

Outlet

Safety Control

Reset Button

Fuel

Tank

Fan Guard

Air Filter

End Cover

PRODUCT

IDENTIFICATION

UNPACKING

Upper Shell

Interrupter

This heater is designed to provide heated air. The heated air is free of harmful

exhaust gases. Vent exhaust gases to the outdoors through a ﬂue pipe, smoke-

stack, or chimney. When using the heater, provide enough air for combustion and

ventilation. Provide proper power supply for the heater.

This manual contains operating, maintenance, and troubleshooting instructions. A

complete parts list is also included.

1. Remove all packing items applied to heater for shipment.

2. Remove all items from carton.

3. Check items for shipping damage. If heater is damaged, promptly inform

dealer where you bought heater.

Exhaust

Gases Outlet

ASSEMBLY This heater is furnished with wheels, handles, and an interrupter. These items and

the mounting hardware are found in the shipping carton.

Tools Needed

•Medium Phillips Screwdriver

•3/8" Open or Adjustable Wrench

•Hammer

1. Slide axle through wheel support frame. Install wheels on axle.

IMPORTANT:

When installing wheels, point extended hub of wheels toward

wheel support frame (see Figure 2).

2. Place cap nuts on axle ends. Gently tap with hammer to secure.

3. Place heater on wheel support frame. Make sure air inlet end (rear) of heater is

over wheels. Line up holes on fuel tank ﬂange with holes on wheel support frame.

4. Place front handle and rear handle on top of fuel tank ﬂange. Insert screws

through handles, fuel tank ﬂange, and wheel support frame. Attach nut ﬁnger

tight after each screw is inserted.

5. After all screws are inserted, tighten nuts ﬁrmly.

6. Place interrupter onto combustion chamber. Secure with two screws. Save two

additional screws for mounting vent pipe.

Figure 2 - Wheel, Handle, and Interrupter Assembly

Screw

Hot Air

Outlet

Fuel

Tank

Flange

Wheel

Support

Frame

Wheel

Cap Nut

Nut

Axle Extended

Hub

Air

Inlet

Rear

Handle

Front

Handle

Screw

Interrupter

THEORY CUTAWAY 125 EURO

THEORY OF

OPERATION

WARNING

FUELS

Use only kerosene or No. 1 fuel oil to avoid risk of ﬁre or

explosion. Never use gasoline, naphtha, paint thinners,

alcohol, or other highly ﬂammable fuels.

Clean

Heated

Air Out

Cool

Air

Output

Air

Filter

Figure 3 - Cross Section Operational View

Spark

Plug

Burner

Head Fan

Motor Air Pump

Intake

Air Filter

Nozzle

Heat Exchanger

Outer Shell

Exhaust Gases

Outlet

Exhaust gases cross over

from combustion chamber

to heat exchanger

Fuel

Tank Air line

To Burner Electronic

Ignitor

Exhaust

Gases Air For Fuel

System Air For Combustion

And Heating Fuel

The Fuel System: The air pump forces air through the air line. The air is then

pushed through the burner head nozzle. This air causes fuel to lift from the tank.

A ﬁne mist of fuel is sprayed into the combustion chamber.

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.

Exhaust gases are ducted out of the heater through a vent pipe. The user must

supply the vent pipe.

The Ignition System: The electronic ignitor sends voltage to the spark plug.

The spark plug ignites the fuel and air mixture.

The Safety Control System: This system causes the heater to shut down if

the ﬂame goes out.

Do not use heavy fuels such as No. 2 fuel oil or No. 2 Diesel. Using heavy fuels

will result in:

•clogged fuel ﬁlter and nozzle

•carbon build up on spark plug

•the need of non-toxic anti-icer in fuel during very cold weather

IMPORTANT:

Use a KEROSENE ONLY storage container. Be sure storage

container is clean. Foreign matter such as rust, dirt or water will cause the safety

control to shut down heater. Foreign matter may also require you to clean fuel

system often.

VENTILATION WARNING

A standard 4 inch (10.16 cm) draft regulator is required only if total vertical and

horizontal length of the vent pipe exceeds 20 feet (6.1 meters). Regulator, vent

pipe, and ﬁttings are not supplied with the heater. Purchase these items at a local

hardware store.

OPERATION

Figure 4 - Ventilation Requirements

125 VENTILATION

PFA/PV 023

If horizontal run is

needed, use at least

1 foot (30.48 cm) rise

for each 10 feet (3.05

meters) of run.

Safety Control

Reset Button

(Fan Guard

Removed)

Figure 5 - Safety Control Reset Button

Continued

Never use heater without properly installed vent pipe and

regulator. You must vent heater to the outdoors. This assures

proper combustion and avoids air contamination in the room.

30" (76.2

cm) Mini-

mum

Standard 4 inch

(10.16 cm) draft

regulator (required

if vent pipe ex-

ceeds 20 feet [6.1

meters] in length).

WARNING

Review and understand the warnings in the Safety Informa-

tion Section. They are needed to safely operate this heater.

Follow all local codes when using this heater.

To Start Heater

1. Follow all ventilation and safety information.

2. Fill fuel tank with kerosene or No. 1 fuel oil.

3. Attach fuel cap.

4. Plugpowercordinto standard 230 volt/50hertz,grounded(earthed)outlet.Use an

extensioncordifneeded.Useonlyathree-wire,grounded(earthed)extensioncord.

Extension Cord Wire Size Requirements

Up to 100 feet (30.5 meters) long, use 16 AWG (1.0 mm2) conductor

101 to 200 feet (30.6 to 61 meters) long, use 14 AWG (1.5 mm2) conductor

Heater will start when power cord is plugged into outlet. If not, push in safety

control reset button (see Figure 5).

OPERATION

Continued

To Stop Heater

1. Unplug power cord from outlet.

To Restart Heater

1. Wait 2 minutes after stopping heater.

2. Repeat steps under “To Start Heater,”page 7.

WARNING

PREVENTATIVE

MAINTENANCE

SCHEDULE

STORAGE 1. Drain fuel tank. Locate drain plug on underside of fuel tank. Remove drain

plug to drain all fuel. Be sure all fuel is removed.

2. Replace drain plug.

3. Add one gallon (4 liters) of clean kerosene to fuel tank.

4. Attach fuel cap.

5. Move heater forwards and backwards to stir fuel.

6. Remove drain plug and drain fuel tank. Be sure all fuel is removed.

7. Replace drain plug. Properly dispose of old and dirty fuel.

8. Store heater in dry place. Make sure storage place is free of dust and corrosive

fumes.

IMPORTANT:

Do not store kerosene over summer months for use during next

heating season. Using old fuel could damage heater.

Never service heater while it is plugged in, operating, or

hot. Severe burns and electrical shock can occur.

Item How Often How To

Fuel tank Flush every 150-200 hours See Storage above.

of operation or as needed.

Air output and Replace every 500 hours of See Air Output, Air Intake,

lint ﬁlters operation or once a year. and Lint Filters, page 11.

Air intake Wash and dry with soap and See Air Output, Air Intake,

ﬁlter water every 500 hours of and Lint Filters, page 11.

operation or replace as needed.

Fuel ﬁlter Clean twice a heating season See Fuel Filter, page 12.

or replace as needed.

Spark plug Clean and regap every 600 See Spark Plug, page 12.

hours operation or replace

as needed.

Fan blades Clean each season or as needed. See Fan, page 10.

Motor Not required/permanently lubricated

WARNING

TROUBLE-

SHOOTING

OBSERVED FAULT POSSIBLE CAUSE REMEDY

Wrong pump pressure

Dirty air output, air intake

and lint ﬁlters

Dirty fuel ﬁlter

Dirt in nozzle

Dirty photocell lens

Bad safety control

See Pump Pressure

Adjustment, page 11.

See Air Output, Air Intake

and Lint Filters, page 11.

See Fuel Filter,

page 12.

See Nozzle, page 13.

Clean photocell lens.

Replace safety control.

Heater ignites, but

safety control shuts

off heater after a

short period of time.

Never service heater while it is plugged in, operating, or

hot. Severe burns and electrical shock can occur.

Wrong pump pressure

Carbon deposits on spark

plug and/or improper

gap

Dirty fuel ﬁlter

Dirt in nozzle

Water in fuel tank

Electronic ignitor not

grounded (earthed)

Bad electronic

ignitor

See Pump Pressure

Adjustment, page 11.

See Spark Plug, page 12.

See Fuel Filter,

page 12.

See Nozzle, page 13.

Drain and ﬂush fuel

tank with clean

kerosene. See Storage,

page 8.

Make sure electronic ig-

nitor mounting is tight.

Replace electronic

ignitor.

Heater will not

ignite, but motor runs

for a short period of

time.

WARNING: High voltage!

Motor does not start

when heater is

plugged in, fan turns

slowly or does not

turn.

Safety control not reset

Binding pump rotor

Reset safety control

button (see Figure 5,

page 7).

If fan is hard to

turn, see Pump Rotor,

page 14.

SERVICE

PROCEDURES WARNING

Upper Shell Removal

1. Remove screws along each

side of heater using 5/16"

nut-driver. These screws

attach upper and lower

shells together.

2. Lift upper shell off.

3. Remove fan guard.

125 SHELL REMOVAL PFA/P 050

Upper

Shell

Fan Guard

Figure 6 - Upper Shell Removal

Never service heater while it is plugged in, operating, or

hot. Severe burns and electrical shock can occur.

Fan

IMPORTANT:

Remove fan

from motor shaft before

removing motor from heater.

The weight of the motor

resting on the fan could

damage the fan pitch.

1. Remove upper shell (see

above).

2. Use 1/8" Allen wrench to

loosen setscrew which

holds fan to motor shaft.

3. Slip fan off motor shaft.

4. Clean fan using a soft cloth

moistened with kerosene or

solvent.

5. Dry fan thoroughly.

6. Replace fan on motor

shaft. Place fan hub ﬂush

with end of motor shaft

(see Figure 8).

7. Place setscrew on ﬂat of

shaft. Tighten setscrew

ﬁrmly (40-50 inch-pounds/

4.5-5.6 n-m).

8. Replace fan guard and

upper shell.

Setscrew Fan

Motor

Shaft

Figure 7 - Fan, Motor Shaft, and Setscrew Location

Setscrew

Motor

Shaft

Fan

Flush

Figure 8 - Fan Cross Section

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