Desa GK20, GK30 User Manual

PORTABLE FORCED AIR HEATERS

OWNER’S MANUAL

RISCALDATORI MOBILI AD ARIA

FORZATA

MANUALE OPERATIVO

APPAREILS DE CHAUFFAGE

INDIVIDUELS À AIR FORCÉ

MANUEL D’UTILISATION

TRAGBARE HOCHDRUCK-

HEISSLUFTTURBINEN

BEDIENUNGSANLEITUNG

Heater Sizes: 20 and 30 KW

Portata dei riscaldatori: 20 e 30 KW

Production de la chaleur: 20 et 30 KW

Heizgerät-Größen: 20, 30 KW

Models - Modelli - Modèles - Modelle:

GK20, GK30

108954

PORTABLE FORCED AIR HEATERS

OWNER’S MANUAL

Heater Sizes: 20 and 30 KW

Models: GK20 and GK30

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.

SAFETY INFORMATION ............................................................ 2

PRODUCT IDENTIFICATION ..................................................... 3

UNPACKING............................................................................... 3

ASSEMBLY................................................................................. 3

FUELS......................................................................................... 4

VENTILATION ............................................................................. 4

THEORY OF OPERATION ......................................................... 4

OPERATION ............................................................................... 5

STORING, TRANSPORTING, OR SHIPPING............................ 5

PREVENTATIVE MAINTENANCE SCHEDULE ......................... 6

TROUBLESHOOTING ................................................................ 6

SERVICE PROCEDURES .......................................................... 8

WIRING DIAGRAM ................................................................... 14

SPECIFICATIONS .................................................................... 15

ACCESSORIES ........................................................................ 15

ILLUSTRATED PARTS AND PARTS LIST................................ 16

WHEELS AND HANDLES ........................................................ 20

EC CONFORMITY DECLARATION.......................................... 21

SAFETY INFORMATION

WARNINGS

IMPORTANT: Read this owner’s manual carefully and completely before trying to assemble, operate, or service this heater. Improper use of this heater can cause serious injury or death from burns, ﬁre, explosion, electrical shock, and carbon monoxide poisoning.

DANGER: Carbon monoxide poisoning may lead

to death!

Carbon Monoxide Poisoning: 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. 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.

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.

• 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.

• Fueling a)Personnel involved with fueling shall be qualified and thor-

oughly familiar with the manufacturer's instructions and applicable regulations regarding the safe fueling of heating units.

b)Only the type of fuel specified on the heater's data plate shall

be used.

c) All flame, including the pilot light, if any, shall be extin-

guished and the heater allowed to cool, prior to fueling.

d)During fueling, all fuel lines and fuel-line connections shall

be inspected for leaks. Any leaks shall be repaired prior to returning the heater to service.

e)At no time shall more than one day's supply of heater fuel

be stored inside a building in the vicinity of the heater. Bulk fuel storage shall be outside the structure.

f) All fuel storage shall be located a minimum of 762cm (25

feet) from heaters, torches, welding equipment, and similar sources of ignition (exception: the fuel reservoir integral with the heater unit).

g)Whenever possible, fuel storage shall be confined to areas

where floor penetrations do not permit fuel to drip onto or be ignited by a fire at lower elevation.

h)Fuel storage shall be in accordance with the authority hav-

ing jurisdiction.

• Never use heater where gasoline, paint thinner, or other highly ﬂammable vapors are present.

• Follow all local ordinances and codes when using heater.

• Heaters used in the vicinity of tarpaulins, canvas, or similar enclosure materials shall be located a safe distance from such materials. The recommended minimum safe distance is

304.8cm (10 feet). It is further recommended that these enclosure materials be of a fire retardant nature. These enclosure materials shall be securely fastened to prevent them from igniting or from upsetting the heater due to wind action.

• Use only in well-vented areas. Before using heater, provide at least a 2800 square cm (three-square-foot) opening of fresh, outside air for each 30 KW (100 000 BTU Hr) of rating.

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

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

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

• Minimum heater clearances from combustibles: Outlet: 250 cm (8 Ft.) Sides, Top, and Rear: 125 cm (4 Ft.)

• Locate heater on a stable and level surface if heater is 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.

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PRODUCT IDENTIFICATION

UNPACKING

ASSEMBLY

PRODUCT IDENTIFICATION

Hot Air Outlet

Upper Shell

Lower Shell

Fuel Tank

Side Cover

ON/OFF Switch with Light

Power Cord

Figure 1 - Model GK20

Hot Air Outlet

Upper Shell

Handle

Fan Guard

Air Filter End Cover

Fuel Cap

ASSEMBLY

(FOR MODEL GK30 ONLY)

These models are furnished with wheels and handles. Wheels, handles, 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:

wheels toward wheel support frame (see Figure 3).

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.

When installing wheels, point extended hub of

Lower Shell

Fan

Fuel Cap

Side Cover

Figure 2 - Model GK30

Power Cord

ON/OFF Switch with Light

Guard

Fuel Tank

UNPACKING

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

2. Remove all items from carton.

3. Check items for any shipping damage. If heater is damaged, promptly inform dealer where you bought heater.

Front Handle

Screw

Hot Air Outlet

Rear Handle

Fuel Tank Flange

Air Inlet

Wheel Support Frame

Wheel Cap Nut

Figure 3 - Wheel and Handle Assembly for Model GKL30

Nut

Extended Hub

Axle

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FUELS

VENTILATION THEORY OF OPERATION

FUELS

WARNING: 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.

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

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

IMPORTANT:

Use a KEROSENE ONLY container. Be sure storage container is clean. Foreign matter such as rust, dirt, or water will cause the flame-out control to shut down heater. Foreign matter may also require you to clean fuel system often.

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 a fresh air opening of at least 2800 square cm (three square feet) for each 30kw (100,000 Btu/Hr) rating. Provide extra fresh air if more heaters are being used.

THEORY OF OPERATION

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.

The Ignition System: The ignition control assembly provides

power to the ignitor. This ignites the fuel/air mixture in the combustion chamber.

The Flame-Out Control System: This system causes the heater to

shut down if the ﬂame goes out.

Combustion Chamber

Clean Heated Air Out

Fuel Tank

Air For Fuel System

Figure 4 - Cross Section Operational View

Nozzle

Ignitor

Fuel Filter

Air For Combustion And Heating

Motor

Fan

Air Line To Burner

Air Pump

Air Intake Filter

Cool Air In

Air Output Filter

Ignition Control Assembly

Fuel

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OPERATION

STORING, TRANSPORTING, OR SHIPPING

OPERATION

WARNING: Review and understand the warnings in the 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. Plug power cord of heater into standard 240 volt/50 hertz,

EXTENSION CORD WIRE SIZE REQUIREMENTS

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

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

Push ON/OFF switch to ON (|) position and heater should start in 5 seconds. If ON/OFF switch light does not come on or heater does not start, see Troubleshooting (pages 6 and 7).

Safety Information

grounded (earthed) outlet. Use an extension cord if needed. Use only a three-prong, grounded (earthed) extension cord.

section, page 2. They are

STORING, TRANSPORTING, OR SHIPPING

Note:

If shipping, transport companies require fuel tanks to be

empty.

1. Drain fuel tank.

Note:

Some models have drain plug on underside of fuel tank. If so, remove drain plug to drain all fuel. If heater does not have drain plug, drain fuel through fuel cap opening. Be sure all fuel is removed.

2. Replace drain plug if provided.

3. If any debris is noted in old fuel, add 1 or 2 quarts of clean kerosene to tank, stir, and drain again. This will prevent excess debris from clogging filters during future use.

4. Replace fuel cap or drain plug. Properly dispose of old and dirty fuel. Check with local automotive service stations that recycle oil.

5. If storing, store heater in dry place. Make sure storage place is free of dust and corrosive fumes.

IMPORTANT:

during next heating season. Using old fuel could damage heater.

Do not store kerosene over summer months for use

TO STOP HEATER

Push ON/OFF switch to OFF (O)position.

TO RESET HEATER

1. Push ON/OFF switch to OFF (O) position and wait 10 seconds (2 minutes if heater has been running).

2. Repeat steps under To Start Heater, above.

ON/OFF

ON/OFF Switch

with Light

Figure 5 - ON/OFF Switch, Model GK20

Figure 6 - ON/OFF Switch, Model GK30

Switch with Light

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PREVENTATIVE MAINTENANCE SCHEDULE

TROUBLESHOOTING

PREVENTATIVE MAINTENANCE SCHEDULE

Item

Fuel tank

Air output and lint ﬁlters

Air intake ﬁlter

Fuel ﬁlter

Ignitor

Fan blades

Motor

How Often

Flush every 150-200 hours of operation or as needed

Replace every 500 hours of operation or once a year

Wash and dry with soap and water every 500 hours of operation or as needed

Clean twice a heating season or as needed

No maintenance required

Clean every season or as needed

Not required/permanently lubricated

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

How To

See Storing, Transporting, or Shipping, page 5

See Air Output, Air Intake, and Lint Filters, page 10

See Fuel Filter, page 8

See Fan, page 13

TROUBLESHOOTING

ATTENTION:

current overloads. Use the light in the ON/OFF switch to troubleshoot the fault condition.

FAULT CONDITION

Motor does not start five seconds after heater is plugged in (ON/OFF switch light remains on)

The ignition control has built-in protection against

POSSIBLE CAUSE

1. Bad electrical connection between motor and ignition control assembly or ignition control assembly and power cord

2. Binding pump rotor

3. Defective ignition control assembly

4. Defective motor

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

REMEDY

1. Check all electrical connections. See Wiring Diagram, page 14

WARNING: High voltage!

2. If fan does not turn freely, see Pump Rotor, page 12

3. Replace ignition control assembly

4. Replace motor

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TROUBLESHOOTING

Continued

TROUBLESHOOTING

FAULT CONDITION

Motor starts and runs but heater does not ignite (ON/OFF switch light remains on)

Heater ignites but ignition control assembly shuts heater off after a short period of time (ON/OFF switch light remains on)

POSSIBLE CAUSE

1. No fuel in tank

2. Pump pressure incorrect

3. Dirty fuel ﬁlter

4. Obstruction in nozzle assembly

5. Water in fuel tank

WARNING: High voltage!

6. Bad electrical connection between ignitor and ignition control assembly

7. Defective ignitor

8. Defective ignition control assembly

1. Pump pressure incorrect

2. Dirty air intake, air output, and/or lint filter

3. Dirty fuel ﬁlter

4. Obstruction in nozzle assembly

5. Photocell assembly not properly installed (not seeing the flame)

WARNING: High voltage!

REMEDY

1. Fill tank with kerosene

2. See Pump Pressur e Adjustment, page 10

3. See Fuel Filter, page 8

4. See Nozzle Assembly, page 11

5. Drain and ﬂush fuel tank with clean kerosene. See Storing, Transporting, or Shipping, page 5

6. Check electrical connections. See Wiring Diagram, page 14

7. Replace ignitor, see page 9

8. Replace ignition control assembly

1. See Pump Pressur e Adjustment, page 10

2. See Air Output, Air Intake, and Lint Filters, page 10

3. See Fuel Filter, page 8

4. See Nozzle Assembly, page 11

5. Make sure photocell boot is properly seated in bracket

ON/OFF switch light does not come on when switch is turned to the ON(|) position and heater does not start

ON/OFF switch light comes on when switch is turned to the ON(|) Position but turns off after five seconds

6. Dirty photocell lens

7. Bad electrical connection between photocell and ignition control assembly

8. Defective photocell

9. Defective ignition control assembly

1. No power to heater

WARNING: High voltage!

2. Bad electrical connections

3. Electrical short in ignitor

1. Electrical short in motor

WARNING: High voltage!

6. Clean photocell lens

7. Check electrical connections. See Wiring Diagram, page 14

8. Replace photocell

9. Replace ignition control assembly

1. Verify that power cord is plugged into an electrical outlet and that the circuit breaker in the electral panel is reset

2. Check electrical wiring and connections. See W iring Diagram, page 14

3. Check ignitor wiring. If no problems are found, replace ignitor (see page 9)

1. Check motor wiring. If no problems are found, replace motor

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SERVICE PROCEDURES

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

UPPER SHELL REMOVAL

1. Remove screws and lock washers 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.

Upper

Upper Shell

Fan Guard

Figure 7 - Upper Shell Removal, Model GK20

Figure 8 - Upper Shell Removal, Model GK30

Shell

Fan Guard

Fuel Filter

Fuel Line

Side Cover

Figure 9 - Fuel Filter Removal, Model GK20

Fuel Filter, Bushing, and Lower Fuel Line

Upper Fuel Line

FUEL FILTER

(Model GK20)

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

2. Remove side cover.

3. Pull rubber fuel line off fuel ﬁlter neck.

4. Carefully pry bushing and fuel ﬁlter out of fuel tank.

5. Wash fuel ﬁlter with clean fuel and replace in tank.

6. Attach rubber fuel line to fuel ﬁlter neck.

7. Replace side cover.

FUEL FILTER

(Model GK30)

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

2. Remove side cover.

3. Pull upper fuel line off fuel ﬁlter neck.

4. Carefully pry bushing, lower fuel line, and fuel ﬁlter out of fuel tank.

5. Wash fuel ﬁlter with clean fuel and replace in tank.

6. Attach upper fuel line to fuel ﬁlter neck.

7. Replace side cover.

Side Cover

Figure 10 - Fuel Filter Removal, Model GK30

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SERVICE PROCEDURES

Continued

IGNITOR

1. Remove upper shell and fan guard (see page 8).

2. Remove fan (see page 13).

3. Remove 4 side cover screws with a 5/16" nut driver. Remove side cover (see Figure 9 or 10, page 8).

4. Disconnect ignitor wires (black) from ignition control assembly (see Figure 11). Pull the ignitor wires up through the hole in the lower shell.

5. Disconnect fuel line hose and air line hose. Remove photocell from photocell bracket (see Figure 11).

6. Remove combustion chamber. Stand combustion chamber on end with nozzle adapter bracket on top (see Figure 12).

7. Remove ignitor screw with a 1/4" nut driver. Carefully remove ignitor from nozzle adapter bracket.

CAUTION: Do not bend or strike ignitor element.

Handle with care.

SERVICE PROCEDURES

8. Carefully remove replacement ignitor from styrofoam packing.

9. Carefully guide ignitor into opening in nozzle adapter bracket. Do not strike ignitor element. Attach ignitor to nozzle adapter bracket with screw using a 1/4" nut driver (see Figure 12). Torque .90 to 1.69 N-m (8 to 15 in-lbs) Do not over torque.

10. Replace combustion chamber.

11. Route the ignitor wires back down through the hole in the lower shell. Connect wires to the ignition control assembly.

12. Replace side cover (see Figure 9 or 10, page 8).

13. Connect and route fuel line hose and air line hose to burner head. See Fuel and Air Line Replacement and Proper Rout- ing, page 12.

14. Replace photocell in photocell bracket. Route wires as shown in either Figure 17 or 18, page 11.

15. Replace fan (see page 13).

16. Replace fan guard and upper shell (see page 8).

Combustion Chamber

Air Line Hose

Fuel Line Hose

Photocell Bracket

Photocell Assembly

Side Cover

Figure 11 - Disconnecting Ignitor Wires from Ignition Control Assembly

Nozzle Adapter Bracket

Ignitor

Ignitor Wires

Ignition Control Assembly

Ignitor Screw/ Washer Assembly

Ignitor

Photocell Bracket

Combustion Chamber

Figure 12 - Ignitor Replacement

Element

Nozzle Adapter Bracket Opening

Ignitor

Nozzle Adapter Bracket

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SERVICE PROCEDURES

Continued

AIR OUTPUT, AIR INTAKE, AND LINT FILTERS

1. Remove upper shell (see page 8).

2. Remove ﬁlter end cover screws using 5/16" nut-driver.

3. Remove ﬁlter end cover.

4. Replace air output and lint ﬁlters.

5. W ash or replace air intake ﬁlter (see Preventative Maintenance Schedule, page 6).

6. Replace ﬁlter end cover.

7. Replace fan guard and upper shell.

IMPORTANT:

PUMP PRESSURE ADJUSTMENT

1. Remove pressure gauge plug and plastic cap (GK20 only) from ﬁlter end cover.

2. Install accessory pressure gauge (part number HA1180).

3. Start heater (see Operation, page 5). Allow motor to reach full speed.

4. Adjust pressure. Turn relief valve to right to increase pressure. Turn relief valve to left to decrease pressure. See speciﬁcations below for correct pressure for each model.

5, Remove pressure gauge. Replace pressure gauge plug and plas-

tic cap (GK20 only) in ﬁlter end cover.

Do not oil filters

Air Intake Filter

Lint Filter

Air Output Filter

Figure 14 - Air Output, Air Intake, and Lint Filters, Model GK30

Pressure Gauge Plug

Plastic Cap

Filter End Cover

Fan Guard

Relief Valve

Air Intake Filter

Filter End Cover

Lint Filter

Air Output Filter

Fan Guard

Figure 13 - Air Output, Air Intake, and Lint Filters, Model GK20

Figure 15 - Pressure Gauge Plug and Plastic Cap Removal

Pump Pressure

Model (PSI/Bar)

GK20 4.9/0.338 GK30 4.9/0.338

Pressure Gauge

Figure 16 - Adjusting Pump Pressure

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SERVICE PROCEDURES

Continued

SERVICE PROCEDURES

NOZZLE ASSEMBLY

1. Remove upper shell (see page 8).

2. Remove fan (see page 13).

3. Remove fuel and air line hoses from nozzle assembly (see Figure 17 or 18).

4. Turn nozzle assembly 1/4 turn to left and pull toward motor to remove (see Figure 19).

5. Place plastic hex-body into vise and lightly tighten.

6. Carefully remove nozzle from the nozzle adapter using 5/8" socket wrench (see Figure 20).

7. Blow compressed air through face of nozzle. This will free any dirt in nozzle area.

8. Inspect nozzle seal for damage.

9. Replace nozzle into nozzle adapter until nozzle seats. Tighten 1/3 turn more using 5/8" socket wrench 4.5 to 5.1 N-m (40 to 45 in-lbs). See Figure 20.

10. Attach nozzle assembly to burner strap.

11. Attach fuel and airline hoses to nozzle assembly. See Fuel and Airline Replacement and Proper Routing, page 12.

12. Replace fan (see page 13).

13. Replace fan guard and upper shell (see page 8).

Combustion Chamber

Nozzle Adapter Bracket

Photocell Bracket

Nozzle/Adapter Assembly

Fuel Line Hose

Combustion Chamber

Nozzle Adapter Bracket

Air Line Hose

Photocell Bracket

Figure 18 - Removing Air and Fuel Line Hoses (Model GK30 Only)

Combustion Chamber

Figure 19 - Removing Nozzle/Adapter Assembly

Nozzle Face

Nozzle

Nozzle Adapter

Nozzle Seal

Nozzle/ Adapter Assembly

Fuel Line Hose

Nozzle/Adapter Assembly

Air Line Hose

Figure 17 - Removing Air and Fuel Line Hoses (Model GK20 Only)

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Air Line Fitting

Figure 20 - Nozzle and Nozzle Adapter

Fuel Line Fitting

SERVICE PROCEDURES

Continued

FUEL AND AIR LINE REPLACEMENT AND PROPER ROUTING

1. Remove upper shell (see page 8).

2. Remove side cover screws using 5/16" nut driver.

3. Remove side cover.

4. Inspect fuel and air line hoses for cracks and/or holes. If fuel line hose is damaged, disconnect from nozzle adapter (see Figure 17 or 18, page 11) and from fuel filter (see page 8). If air line hose is damaged, disconnect from nozzle adapter (see Figure 17 or 18, page 11) and from barb fitting on pump end cover (see Figure 21).

5. Install new air and/or fuel line. Attach one end of air line hose to barb fitting on pump end cover (see Figure 21) and the other end to nozzle adapter (see Figure 17 or 18, page 11). Attach one end of fuel line hose to fuel filter (see page 8) and the other end to nozzle adapter (see Figure 17 or 18, page 11).

For GK20 model heaters, route air and fuel lines approximately as shown in Figure 17, page 11.

Note:

Hoses are not to be touching photocell bracket.

For GK30 model heater, route air and fuel lines approximately as shown in Figure 18, page 11.

Note:

Hoses are not to be touching photocell bracket.

6. Replace side cover.

7. Replace upper shell and fan guard (see page 8).

7. Check for debris in pump. If debris is found, blow out with compressed air.

8. Install insert and rotor.

9. Check gap on rotor. Adjust to .076/.101 mm (.003"/.004") if needed (see Figure 24, page 13).

Note:

Rotate rotor one full turn to ensure the gap is .076/.101 mm

(.003"/.004") at tightest position. Adjust if needed.

10. Install blades, pump plate, air ﬁlters, and ﬁlter end cover.

11. Replace fan guard and upper shell.

12. Adjust pump pressure (see page 10).

Note:

If rotor is still binding, proceed as follows.

Blade

Pump Plate

Air Intake Filter

Filter End Cover

Insert

Rotor

Air Output Filter

Pump End Cover

Barb Fitting

Air Hose

Figure 21 - Air Hose to Barb FItting

PUMP ROTOR

(Procedure if Rotor is Binding)

1. Remove upper shell (see page 8).

2. Remove ﬁlter end cover screws using 5/16" nut-driver.

3. Remove ﬁlter end cover and air ﬁlters.

4. Remove pump plate screws using 5/16" nut-driver.

5. Remove pump plate.

6. Remove rotor, insert, and blades.

Fan Guard

Figure 22 - Rotor Location, Model GK20

Blade

Pump Plate

Air Intake Filter

Filter End Cover

Rotor

Insert

Air Output Filter

Fan Guard

Figure 23 - Rotor Location, Model GK30

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SERVICE PROCEDURES

Continued

SERVICE PROCEDURES

13. Perform steps 1 through 6, page 12.

14. Place ﬁne grade sandpaper (600 grit) on ﬂat surface. Sand rotor lightly in “ﬁgure 8” motion four times (see Figure 25).

15. Reinstall insert and rotor.

16. Perform steps 10 through 12, page 12.

Gap Adjusting Screw

.076/.101 mm

Blade

Rotor

Gap Adjusting Screw

Figure 24 - Gap Adjusting Screw Locations

Sandpaper

(.003"/.004") Gap Measured With Feeler Gauge

Fan

Setscrew

Fan

Flush

Motor Shaft

Figure 26 - Fan, Motor Shaft, and Setscrew Location

Motor Shaft

Figure 27 - Fan Cross Section

Setscrew

IGNITION CONTROL ASSEMBLY

WARNING: Unplug heater before servicing.

Remove Old Assembly

1. Using the 5/16" nut driver or socket wrench, remove the four side cover screws (see Figure 28).

2. Disconnect the nine wires from the ignition control assembly .

3. Using needle nose pliers, squeeze the tab on the printed circuit board support and lift up on the edge of the ignition control assembly (see Figure 29). Repeat this for the other four printed circuit board supports then remove the assembly.

Figure 25 - Sanding Rotor

FAN

IMPORTANT:

motor from heater. The weight of the motor resting on the fan could damage the fan pitch.

1. Remove upper shell (see page 8).

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 27).

7. Place setscrew on ﬂat of shaft. Tighten setscrew ﬁrmly 4.5 to

5.6 N-m (40 to 50 in-lbs).

8. Replace fan guard and upper shell.

108954

Remove fan from motor shaft before removing

Side Cover

Figure 28 - Removing Cover

Side Cover

Ignition Control Assembly

Printed Circuit Board Supports (5)

Figure 29 - Removing Circuit Board

SERVICE PROCEDURES WIRING DIAGRAM

SERVICE PROCEDURES

Continued

Installing the New Assembly

CAUTION: Ignition control assembly contains electrostatic components. Handle the assembly by the edges of the printed circuit board. Do not touch any of the quick connect terminals or electronic components.

1. Align the five holes in the assembly with the five printed circuit board supports in the side cover.

2. Holding the assembly by the edges of the printed circuit board, apply downward pressure until all five tabs on the printed circuit board supports springlock into place. Pull up on assembly to verify this (see Figure 30).

3. Connect the nine wire leads to the ignition control assembly as shown in the wiring diagram in column 2.

CAUTION: Double check connections. Connecting ignition control assembly wrong could result in damage to the ignition control assembly and/or other components in the heater assembly.

WIRING DIAGRAM

Power Plug 240 V/50Hz

Green-Yellow

Photocell

Blue

(2)(1)

Brown

Blue

White

Blue

(3) (4) (6)

White

(N)

Blue

(5)

Ignition Control

Brown/White

Green-Yellow

Motor

Red

ON/Off Switch

(7)

Ignitor

Black

(8)

Black

4. Using the 5/16" nut driver or socket wrench reinstall side cover to heater. Tighten screws until snug. Do not over torque!

Unacceptable

Unacceptable Acceptable

Figure 30 - Attaching Circuit Board to Tabs

Acceptable

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SPECIFICATIONS

GK20 GK30

Output Rating (KW) 20 30 Fuel Use Only Kerosene or No. 1 Fuel Oil Fuel Tank Capacity (U.S. Gal./Liters) 5.0/18.9 9.0/34 Fuel Consumption (Gal. Per Hr./Liters Per Hr.) .52/1.97 .79/3.0 Electric Requirements 240 V/50 Hz (Same All Models) Amperage (Normal Run) 1.0 1.2 Hot Air Output (CFM/CMM) 225/6.4 425/12 Motor Speed (RPM) 2850 2850

SPECIFICATIONS

ACCESSORIES

Purchase accessories from your local dealer.

AIR GAUGE KIT - HA1180

For all models. Special tool to check pump pressure.

STANDARD WHEELS AND HANDLE KIT HA1206

Makes heater even more portable and convenient. Easy to assemble. For model GK20.

HEAVY DUTY WHEELS AND HANDLE KIT HA1202

For heavy duty applications. Makes your heater even more portable and convenient. For model GK20.

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A 008

IGNITION CONTROL ASSEMBLY/ PHOTOCELL TESTER - HA1170

Special tool used to test the ignition control assembly and photocell.

9-2

9-1

9-3

9-4

9-5

9-6

ILLUSTRATED PARTS BREAKDOWN

MODEL GK20

12-1

12-2

12-18

12-17

12-16

Motor and Pump Assembly

12-3

12-15

12-4

12-14

12-5

12-6

12-7

12-8

12-9

12-13

12-10

12-12

12-11

12-19

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PARTS LIST

MODEL GK20

KEY PART NO. NUMBER DESCRIPTION QTY.

1 M51104-01 Handle 1 2 098511-256 Upper Shell 1 3 M11084-29 Screw, #10-16 x 3/4" 2 4 102432-01 Screw/Lockwasher, 1/2" 6 5 098512-64 Combustion Chamber 1 6 M10908-2 Screw, #6-32 x 3/8" 2 7 103154-03 Photocell Bracket 1 8 M16656-24 Photocell Assembly 1 9 ∗∗ Burner Strap Assembly 1 9-1 HA3026 Nozzle Assembly 1 9-2 102548-05 Ignitor Kit 1 9-3 104056-01 Nozzle Adapter 1 9-4 102336-01 Nozzle Adapter Bracket 1 9-5 M10908-75 Screw, #6-32 x 7/8" 1 9-6 103347-01 Belleville Washer 1 10 102431-01 Screw/Lockwasher, 1/2" 2 11 103684-01 Fan 1 12 ∗∗ Motor and Pump Assembly 1 12-1 102001-23 Motor 1 12-2 079975-02 Pump Body 1 12-3 M22009 Insert 1 12-4 M22456-1 Rotor 1 12-5 M29608 Pump End Cover 1 12-6 M29632 Lint Filter 1 12-7 M29633 Intake Filter 1 12-8 M29609 Filter End Cover 1 12-9 M12461-31 Screw, #10-32 x 1" 3 12-10 M27694 Adjusting Screw 1 12-11 M10993-1 Pressure Relief Spring 1 12-12 M22997 Plug 1 12-13 M8940 Steel Ball, 1/4" Diameter 1 12-14 M29612-01 Output Filter 1 12-15 M12461-31 Screw #10-32 x 1" 6 12-16 103676-01 Nylon Elbow, 90° 1 12-17 M8643 Blade 4 12-18 FHPF3-5C Screw, #10-32 x 5/8" 2 12-19 105780-01 Plastic Cap 1 13 M51105-01 Fan Guard 1

This list contains replaceable parts used in your heater. When ordering parts, be sure to provide the correct model and serial numbers (from the model plate), then the part number and description of the desired part.

KEY PART NO. NUMBER DESCRIPTION QTY.

14 079673-07 Power Cord 1 15 M50400 Strain Relief Bushing 1 16 NTC-4C Hex Lock Nut, 1/4-20 2 17 102431-01 Screw/Lockwasher, 1/2" 4 18 M50631 Rubber Bumper 2 19 097461-09 Side Cover 1 20 101205-01 Motor Bracket 1 21 M30865-02 Bushing 1 22 M11271-8 Clip Nut 6 23 M50104-02 Bushing 1 24 102431-01 Screw/Lockwasher, 1/2" 6 25 RF3-4B Screw, #10-32 x 1/2" 1 26 098511-237 Lower Shell 1 27 M50814-06 Rubber Airline 1 28 M29652-05 Fuel Line 1 29 108060-03 Fuel Filter 1 30 M10990-3 Rubber Bushing 1 31 102861-01 Nylon Locknut 1 32 102349-01 PCB Support 5 33 104068-04 Ignition Control Assembly 1 34 097702-01 Fuel Cap (Includes Gasket) 1 35 108088-03 Fuel Tank 1 36 M51108-01 Shell Heat-Shield 1 37 NPF-3B Nut, #10-32 3 38 097785-01 Vinyl Foam Gasket 1 39 WLE-3 Lockwasher, #10 1 40 079010-39 Wire Assembly (Brown/White) 1 41 105793-01 ON/OFF Switch 1 42 079919-01 Switch Cover 1 43 079010-40 Wire Assembly (White) 1

PARTS AVAILABLE - NOT SHOWN

HA2210 Filler Neck Screen 1 103814-01 Wire Tie 1 097649-01 Tradename Decal 2 106013-02 Decal Package 1 105880-01 Ignition Control Assembly Fuse 1

∗∗ Not available as an assembly; order parts separately

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ILLUSTRATED PARTS BREAKDOWN

MODEL GK30

7-4

7-1

7-2

7-6

7-3

7-5

10-1

10-2

10-3

10-4

10-17

10-16

10-15

10-13

Motor and Pump Assembly

10-14

10-5

10-13

10-6

10-7

10-8

10-9

10-10

10-11

10-12

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PARTS LIST

MODEL GK30

KEY PART NO. NUMBER DESCRIPTION QTY.

1 098511-257 Upper Shell 1 2 102432-01 Screw/Lockwasher, 1/2" 8 3 098512-65 Combustion Chamber 1 4 103971-01 Photocell Bracket 1 5 M10908-2 Screw, #6-32 x 3/8" 2 6 M16656-24 Photocell Assembly 1 7 ** Burner Strap Assembly 1 7-1 HA3027 Nozzle Assembly 1 7-2 102548-05 Ignitor Kit 1 7-3 M10908-75 Screw, #6-32 x 7/8" 1 7-4 102336-01 Nozzle Adapter Bracket 1 7-5 104054-01 Nozzle Adapter 1 7-6 103347-01 Belleville Washer 1 8 102431-01 Screw/Lockwasher, 1/2" 2 9 102042-01 Fan 1 10 ** Motor and Pump Assembly 1 10-1 102001-24 Motor 1 10-2 079975-02 Pump Body 1 10-3 FHPF3-5C Screw, #10-32 x 5/8" 2 10-4 M22009 Rotor Insert 1 10-5 M22456-1 Pump Rotor 1 10-6 M50545 Pump End Cover 1 10-7 M12179 Intake Filter 1 10-8 M16545 Filter End Cover 1 10-9 M8940 Steel Ball, 1/4" Diameter 1 10-10 M10993-1 Relief Spring 1 10-11 M27694 Adjusting Screw 1 10-12 M22997 Plug 1 10-13 M12461-31 Screw, #10-32 x 1" 10 10-14 M12244-1 Output Filter 1 10-15 M11637 Lint Filter 1 10-16 M50820-02 Barb Fitting 1 10-17 M8643 Blade 4 11 M50631 Rubber Bumper 2 12 101206-01 Motor Mounting Bracket 1 13 101695-01 Button Plug 1 14 104068-04 Ignition Control Assembly 1

KEY PART NO. NUMBER DESCRIPTION QTY.

15 NTC-4C Hex Lock Nut, 1/4-20 2 16 M51114-01 Fan Guard 1 17 M27417 Drain Plug (Includes “o” Ring) 1 18 099213-01 Button Plug 1 19 M51345-01 Fuel Line 1 20 107961-01 Fuel Filter 1 21 M51151-01 Fuel Line Tube 1 22 M10990-3 Rubber Bushing 1 23 M50814-03 Airline 1 24 098511-236 Lower Shell 1 25 M50104-03 Bushing 1 26 M50104-01 Bushing 1 27 102431-01 Screw/Lockwasher, 1/2" 6 28 M11271-8 Clip Nut 8 29 RF3-4B Screw, #10-32 x 1/2" 1 30 108088-04 Fuel Tank 1 31 097702-01 Fuel Cap (Includes Gasket) 1 32 102349-01 P.C. Board Support 5 33 M50400 Strain Relief Bushing 1 34 079673-07 Power Cord 1 35 M51077-15 Side Cover 1 36 102431-01 Screw/Lockwasher, 1/2" 4 37 102861-01 Nylon Locknut 1 38 079010-39 Wire Assembly (Brown/White) 1 39 105793-01 ON/OFF Switch 1 40 079919-01 Switch Cover 1 41 WLE-3 Lockwasher, #10 1 42 NPF-3B Nut, #10-32 3 43 097468-01 Edge Liner 1 44 079010-40 Wire Assembly (White) 1

PARTS AVAILABLE - NOT SHOWN

HA2210 Filler Neck Screen 1 103814-01 Wire Tie 1 097650-01 Tradename Decal 2

106013-03 Decal Package 1 105880-01 Ignition Control Assembly Fuse 1

** Not available as an assembly; order parts separately

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WHEELS AND HANDLES

MODEL GK30

KEY PART PART NO. NUMBER DESCRIPTION QTY.

1 HA2203 Handles 2 2 M12345-33 Screw, #10-24 x 1 3/4"8 3 M12342-3 Wheel Support Frame 1 4 NTC-3C Hex Nut, #10-24 8 5 107426-01 Wheel (2) 1 6 M28526 Cap Nut 2 7 M51015-01 Axle 1

108954

EC CONFORMITY DECLARATION

BIEMMEDUE, S.p.A.

Via Industria, 12

I-12062 Cherasco (CN)

ITALIA

Kerosene Portable Forced Air Heaters

Model Numbers: GK20 and GK30

It is declared that these models conform to the Machinery Directive 98/37/EC, including 91/368/EEC and the Low Voltage Directive 73/23/EEC. It is further declared that these models conform to the EMC Directive 89/336/EEC, amended by 92/31/EEC and including EN50081-1 and EN50082-1.

We declare that the models noted are in conformity.

Company BIEMMEDUE, S.p.A. Name Franco Marengo Title Head of Technical Directorate

07/09/2001 — Cherasco, IT

Date and Place Signature

108954

BIEMMEDUE, S.p.A.

Via Industria, 12

I-12062 Cherasco (CN)

ITALIA

108954

RISCALDATORI MOBILI AD ARIA FORZATA

MANUALE OPERATIVO

Portata dei riscaldatori: 20 e 30 KW

Modelli: GK20 e GK30

IMPORTANTE: Leggere e comprendere questo manuale operativo prima di effettuare l’assemblaggio, la messa in funzione o la manutenzione di questo riscaldatore. L’uso errato del riscaldatore può causare lesioni gravi. Conservare questo manuale a titolo di futuro riferimento.

INFORMAZIONI SULLA SICUREZZA ........................................ 2

IDENTIFICAZIONE DEI PRODOTTI........................................... 3

DISIMBALLAGGIO...................................................................... 3

ASSEMBLAGGIO ....................................................................... 3

COMBUSTIBILI........................................................................... 4

VENTILAZIONE .......................................................................... 4

PRINCIPI DI FUNZIONAMENTO................................................ 4

FUNZIONAMENTO..................................................................... 5

CONSERVAZIONE, TRASPORTO O SPEDIZIONE .................. 5

PROGRAMMA DI MANUTENZIONE PREVENTIVA .................. 6

INDIVIDUAZIONE DEI GUASTI.................................................. 7

PROCEDURE DI MANUTENZIONE........................................... 9

VEDUTA ESPLOSA DEI COMPONENTI E

DISTINTA DEI COMPONENTI............................................... 16

RUOTE ED IMPUGNATURE .................................................... 20

DATI TECNICI........................................................................... 21

DIAGRAMMI SCHEMATICI DEI

COLLEGAMENTI ELETTRICI................................................ 21

ACCESSORI ............................................................................. 22

DICHIARAZIONE DI CONFORMITÀ CE .................................. 23

INFORMAZIONI SULLA SICUREZZA

AVVERTENZE

IMPORTANTE: leggere attentamente e completamente il manuale operativo prima di tentare l’assemblaggio, la messa in funzione o la manutenzione di questo riscaldatore. L’uso del riscaldatore può causare lesioni gravi o fatali a seguito di ustioni, incendio, esplosione, scariche elettriche o asfissia da ossido di carbonio.

PERICOLO: L’asfissia da ossido di carbonio può

risultare fatale!

Asfissia da ossido di carbonio - I primi sintomi di asfissia da ossido

di carbonio assomigliano a quelli dell’influenza, con cefalee, capogiri e/o nausea. Tali sintomi potrebbero essere causati dal funzionamento difettoso del riscaldatore. Trasferirsi immediatamente all’aperto! Far riparare il riscaldatore. Alcune persone risentono maggiormente degli effetti dell’ossido di carbonio, specie le donne gravide, coloro che soffrono di malattie cardiache o polmonari, gli anemici, gli ubriachi e quanti si trovano in località ad alta quota.

Accertarsi di leggere e comprendere tutte le avvertenze. Conservare questo manuale a titolo di futuro riferimento: funge infatti da guida al funzionamento sicuro e corretto del riscaldatore.

• Usare solamente cherosene o olio combustibile nº 1 per evitare i rischi di incendio o di esplosione. Non fare mai uso di benzina, nafta, solventi per vernici, alcool o altri combustibili altamente infiammabili.

• Rifornimento a)Il personale incaricato del rifornimento deve essere

qualificato ed avere totale dimestichezza con le istruzioni del fabbricante e con la normativa vigente in merito al rifornimento sicuro dei riscaldatori.

b)Usare solamente il tipo di combustibile espressamente

specificato sulla targhetta identificativa del riscaldatore.

c)Prima di effettuare il rifornimento, spegnere tutte le fiamme,

compresa quella pilota, ed attendere che il riscaldatore si raffreddi.

d)Nel corso del rifornimento, ispezionare tutte le linee del

combustibile ed i relativi raccordi, alla ricerca di eventuali perdite. Qualsiasi perdita va riparata prima di rimettere in funzione il riscaldatore.

e)In nessuna circostanza si deve conservare nello stesso edificio,

in vicinanza del riscaldatore, una quantità di combustibile superiore a quella necessaria per mantenere in funzione il riscaldatore per una giornata. Le cisterne di magazzinaggio del carburante devono trovarsi in una struttura separata.

f) Tutti i serbatoi del combustibile devono trovarsi ad una

distanza minima di 762 cm (25 piedi) da riscaldatori, cannelli ossidrici, attrezzature per la saldatura e simili fonti di accensione (ad eccezione del serbatoio del combustibile incorporato nel riscaldatore).

g)Ogniqualvolta possibile, il combustibile va conservato in

locali il cui pavimento non permetta la penetrazione ed il gocciolio del combustibile stesso su fiamme sottostanti che possano causarne l’accensione.

h)La conservazione del combustibile va effettuata in conformità

alla normativa vigente.

• Non usare mai il riscaldatore in locali nei quali siano presenti benzina, solventi per vernici o altri vapori altamente infiammabili.

• Durante l’uso del riscaldatore, attenersi a tutte le ordinanze locali ed alla normativa vigente.

• I riscaldatori usati in prossimità di teloni, tende o altri materiali di copertura simili devono essere situati a distanza di sicurezza da essi. La distanza minima di sicurezza consigliata è pari a 304,8 cm (10 piedi). Si consiglia anche di usare materiali di copertura di tipo ignifugo. T ali materiali vanno fissati in modo sicuro, onde evitare che prendano fuoco e prevenire interferenze causate dal vento con il riscaldatore.

• Usare solamente in aree ben ventilate. Predisporre un’apertura di 2,800 cm nominale, allo scopo di immettere aria fresca dall’esterno.

• Usare solamente in ambienti privi di vapori infiammabili o di elevate concentrazioni di polvere.

• Alimentare il riscaldatore solamente con corrente avente la tensione e la frequenza specificate sulla targhetta identificativa.

• Usare solamente prolunghe a tre fili opportunamente collegate a massa.

• Distanza minima di sicurezza intercorrente tra in riscaldatore e sostanze combustibili: uscita anteriore - 250 cm (8 piedi); di lato, in alto e sul retro - 125 cm (4 piedi).

• Porre il riscaldatore caldo o in funzione su una superficie stabile e livellata, in modo da evitare i rischi di incendio.

• Quando si sposta o si conserva il riscaldatore, mantenerlo in posizione livellata, per evitare la fuoriuscita del combustibile.

• Tenere lontani i bambini e gli animali dal riscaldatore.

• Scollegare il riscaldatore dalla presa di rete quando non lo si usa.

• Quando è controllato da un termostato, il riscaldatore può accendersi in qualsiasi momento.

• Non usare mai il riscaldatore in stanze frequentemente abitate né in camere da letto.

• Non bloccare mai la presa dell’aria (lato posteriore) né l’uscita dell’aria (lato anteriore) del riscaldatore.

• Quando il riscaldatore è caldo, collegato alla rete o in funzione non deve mai essere spostato, maneggiato, rifornito né soggetto ad alcun intervento di manutenzione.

• Non collegare mai condotti dell’aria ai lati anteriore o posteriore del riscaldatore.

(3 piedi quadrati) per ogni 30 KW di portata

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IDENTIFICAZIONE DEI PRODOTTI

DISIMBALLAGGIO

ASSEMBLAGGIO

IDENTIFICAZIONE DEI PRODOTTI

Uscita dell’aria calda

Semiguscio superiore

Semiguscio inferiore

Serbatoio del combustibile

Coperchio laterale

Figura 1. Modello GK20

Uscita dell’aria calda

Semiguscio inferiore

Tappo del serbatoio

Interruttore ON/OFF dotato di spia

Maniglia

Griglia della ventola

Semiguscio superiore

Coperchio dei filtri dell’aria

Tappo del serbatoio

Cavo di alimentazione

Griglia della ventola

ASSEMBLAGGIO

(PER I SOLI MODELLO GK30)

Questi modelli sono dotati di ruote e di impugnature. Tali componenti, completi della relativa bulloneria di montaggio, sono situati nella scatola di spedizione.

Attrezzi necessari

• Cacciavite medio a stella

• Chiave fissa da 3/8 di pollice o chiave a rollino

• Martello.

1. Inserire l’asse attraverso il telaio di sostegno delle ruote. Installare le ruote sull’asse.

IMPORTANTE:

sporgente dei mozzi verso il telaio di sostegno delle ruote (vedere la Figura 3).

2. Porre i dadi ciechi sulle estremità dell’asse. Percuoterli delicatamente con il martello per fissarli in posizione.

3. Collocare il riscaldatore sul telaio di sostegno delle ruote. Accertarsi di collocare l’estremità della presa dell’aria (lato posteriore) del riscaldatore direttamente sopra le ruote. Allineare i fori praticati sulla flangia del serbatoio del combustibile ai fori del telaio di sostegno.

4. Disporre l’impugnatura anteriore e quella posteriore in cima alla flangia del serbatoio del combustibile. Inserire le viti attraverso le impugnature, la flangia ed il telaio di sostegno delle ruote. A vvitare il dado con le dita dopo l’inserimento di ciascuna vite.

5. Una volta inserite tutte ed 8 le viti, serrarne saldamente i dadi.

quando si installano le ruote, disporre la parte

Impugnatura anteriore

Impugnatura posteriore

Coperchio laterale

Interruttore ON/OFF dotato di spia

Figura 2. Modello GK30

Cavo di alimentazione

Serbatoio del combustibile

DISIMBALLAGGIO

1. Rimuovere tutti i materiali di imballaggio usati per confezionare il riscaldatore per la spedizione.

2. Estrarre tutti gli articoli dalla scatola.

3. Controllarli alla ricerca di danni subiti durante il trasporto. Se il riscaldatore appare danneggiato, informare tempestivamente il concessionario presso il quale è stato effettuato l’acquisto.

108954

Uscita dell’aria calda

Flangia del serbatoio del combustibile

Telaio di sostegno delle ruote

Ruota

Dado cieco

Figura 3. Assemblaggio delle ruote e delle impugnature per i soli modello GK30

Vite

Dado

Asse

Ingresso dell’aria

Parte sporgente del mozzo

COMBUSTIBILI

VENTILAZIONE PRINCIPI DI FUNZIONAMENTO

COMBUSTIBILI

AVVERTENZA: Usare solamente cherosene o olio combustibile nº 1 per evitare i rischi di incendio o di esplosione. Non fare mai uso di benzina, nafta, solventi per vernici, alcool o altri combustibili altamente infiammabili.

Non usare combustibili pesanti, quali olio combustibile nº 2 o gasolio nº 2. L’uso di combustibili pesanti causa:

• l’intasamento del filtro del combustibile e dell’ugello;

• la formazione di depositi carboniosi sulla candela;

• la necessità di usare additivi antigelo non tossici in caso di temperature molto basse.

IMPORTANTE:

usare un apposito contenitore, contrassegnato dalla dicitura ESCLUSIVAMENTE PER CHEROSENE, ed accertarsi che sia pulito. La presenza di sostanze estranee quali ruggine, sporco o acqua fa scattare la protezione post-estinzione, causando il conseguente arresto del riscaldatore. Inoltre, a causa degli agenti contaminanti, può essere necessario pulire con maggiore frequenza il sistema di alimentazione.

VENTILAZIONE

AVVERTENZA: Soddisfare i requisiti minimi prescritti di ventilazione con aria fresca proveniente dall’esterno, pena la possibile asfissia da ossido di carbonio. Assicurare adeguata ventilazione con aria esterna fresca prima di accendere il riscaldatore.

Predisporre un’apertura di 2,800 cm2 (3 piedi quadrati) per ogni 30 KW(100.000 BTU/h) di portata nominale, allo scopo di immettere aria fresca dall’esterno. Aumentare il volume di aria fresca disponibile quando si usa più di un riscaldatore contemporaneamente.

PRINCIPI DI FUNZIONAMENTO

Alimentazione del combustibile - L’aria forzata dal compressore

attraverso il tubo dell’aria viene erogata attraverso l’ugello della testa di combustione, aspira il combustibile dal serbatoio e lo spruzza nella camera di combustione in forma nebulizzata.

Sistema dell’aria - Il motore fa ruotare una ventola che a sua volta

fa circolare l’aria all’interno ed attorno alla camera di combustione. L’aria viene riscaldata ed emessa calda e pulita all’esterno.

Sistema di accensione - Il gruppo di controllo dell’accensione

applica corrente all’accenditore, che innesca la miscela aria/ combustibile nella camera di combustione.

Sistema di protezione post-estinzione - Questo sistema arresta il

riscaldatore in caso di estinzione della fiamma.

Camera di combustione

Uscita dell’aria calda e pulita

Serbatoio del combustibile

Aria per l’alimentazione del combustibile

Figura 4. Schema di funzionamento in sezione trasversale

Accenditore

Ugello

Filtro del combustibile

Aria per la combustione ed il riscaldamento

Motore

Ventola

Tubo dell’aria diretta al bruciatore

Compressore

Filtro di ingresso dell’aria

Ingresso dell’aria fredda

Filtro di uscita dell’aria

Generatore elettronico di alta tensione

Combustibile

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FUNZIONAMENTO

CONSERVAZIONE, TRASPORTO O SPEDIZIONE

FUNZIONAMENTO

AVVERTENZA: Prendere visione e comprendere

le avvertenze presentate nella sezione

sulla sicurezza,

far funzionare in modo sicuro questo riscaldatore. Durante l’uso del riscaldatore, attenersi alla normativa vigente.

pagina 2. È necessario seguirle per

ACCENSIONE DEL RISCALDATORE

1. Seguire tutte le istruzioni relative alla sicurezza ed alla ventilazione.

2. Riempire il serbatoio del combustibile con cherosene o olio combustibile nº 1.

3. Chiudere il tappo del serbatoio.

4. Inserire la spina del cavo di alimentazione in una presa a muro collegata a massa, da 230 volt/50 hertz. Se necessario, usare una prolunga a tre fili, collegata a massa.

Requisiti di diametro dei fili della prolunga

Fino a 30,5 m (100 piedi), usare conduttori da 1,0 mm2 (16 AWG) Da 30,6 a 61 m (da 101 a 200 piedi), usare conduttori da 1,5 mm2 (14

AWG) Portare l’interruttore ON/OFF in posizione ON (|); il riscaldatore

dovrebbe accendersi entro cinque secondi. Se la spia dell’interruttore ON/OFF non si accende o il riscaldatore non si avvia, vedere Individuazione dei guasti (pagina 7 e 8).

Informazioni

CONSERVAZIONE, TRASPORTO O SPEDIZIONE

Nota:

ai fini della spedizione, le ditte di trasporto richiedono lo

svuotamento del serbatoio.

1. Svuotare il serbatoio del combustibile.

Nota:

alcuni modelli sono dotati di un tappo di scarico posto sul lato inferiore del serbatoio. In tal caso, rimuovere il tappo di scarico e svuotare il combustibile. Se il riscaldatore in dotazione non dispone di tappo di scarico, il combustibile va svuotato attraverso il tappo del serbatoio. Accertarsi che il serbatoio sia completamente vuoto.

2. Chiudere il tappo di scarico, se in dotazione.

3. Se si nota la presenza di detriti nel vecchio combustibile, versare un paio di litri di cherosene nel serbatoio, agitare e scaricare di nuovo il combustibile. Ciò impedisce l’accumularsi di quantità eccessive di detriti sui filtri, evitandone l’intasamento nel corso di usi futuri.

4. Chiudere il tappo del serbatoio o il tappo di scarico. Smaltire in modo appropriato il combustibile vecchio e sporco, consegnandolo ad una stazione di servizio che ricicla olio.

5. Ai fini dell’immagazzinaggio, conservare il riscaldatore in un luogo asciutto, privo di polvere o di vapori corrosivi.

IMPORTANTE:

ai fini del riscaldamento durante la stagione fredda successiva. L’uso di combustibile vecchio può danneggiare il riscaldatore.

non conservare il cherosene d’estate per utilizzarlo

SPEGNIMENTO DEL RISCALDATORE

Portare l’interruttore ON/OFF in posizione OFF.

RIACCENSIONE DEL RISCALDATORE

1. Portare l’interruttore ON/OFF in posizione OFF (O) e attendere 10 secondi (2 minuti se il riscaldatore è rimasto in funzione).

2. Ripetere i passi della procedura di Accensione del riscaldatore.

Interruttore ON/

OFF dotato di spia

Figura 5. Interruttore ON/OFF del modello GK20

Figura 6. Interruttore ON/OFF dei modello GK30

Interruttore

ON/OFF dotato di spia

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+ 65 hidden pages

Desa GK20, GK30 User Manual

TABLE OF CONTENTS

SAFETY INFORMATION

PRODUCT IDENTIFICATION

UNPACKING

ASSEMBLY

FUELS

VENTILATION

THEORY OF OPERATION

OPERATION

STORING, TRANSPORTING, OR SHIPPING

PREVENTATIVE MAINTENANCE SCHEDULE

TROUBLESHOOTING

SERVICE PROCEDURES

WIRING DIAGRAM

SPECIFICATIONS

ACCESSORIES

PARTS LIST

WHEELS AND HANDLES

EC CONFORMITY DECLARATION

TABLE OF CONTENTS

INFORMAZIONI SULLA SICUREZZA

IDENTIFICAZIONE DEI PRODOTTI

DISIMBALLAGGIO

ASSEMBLAGGIO

COMBUSTIBILI

VENTILAZIONE

PRINCIPI DI FUNZIONAMENTO

FUNZIONAMENTO

CONSERVAZIONE, TRASPORTO O SPEDIZIONE