Dura Heat GFA50A Operator's manual

WARRANTY: GFA40 / GFA50A / GFA100A / GFA150A

SERVICE AND LIMITED WARRANTY

GHP Group, Inc., warrants this product to be free from defects in materials and components

for one (1) year from the date of first purchase, provided that the product has been properly

installed, operated and maintained in accordance with all applicable instructions. To make a

claim under warranty the Bill of ale or cancelled check must be presented.

This warranty is extended only to the original retail purchaser. This warranty covers the cost of

part(s) required to restore this heater to proper operating condition and an allowance for labor

when provided by a GHP Group, Inc., Authorized ervice Center. Warranty part(s) MU T be

obtained through authorized dealers of this product and/or GHP Group, who will

provide original factory replacement parts. Failure to use original factory replacement parts

voids this warranty. The heater MU T be installed by a qualified installer in accordance with all

local codes and instructions furnished with the unit.

This warranty does not apply to parts that are not in original condition because of normal wear

and tear, or parts that fail or become damaged as a result of misuse, accidents, lack of proper

maintenance or defects caused by improper installation. Travel, diagnostic cost, labor, trans-

portation and any and all such other costs related to repairing a defective heater will be the

responsibility of the owner.

TO THE FULL EXTENT ALLOWED BY THE LAW OF THE JURI DICTION THAT GOVERN THE

ALE OF THE PRODUCT; THI EXPRE WARRANTY EXCLUDE ANY AND ALL OTHER

EXPRE ED WARRANTIE AND LIMIT THE DURATION OF ANY AND ALL IMPLIED WAR-

RANTIE , INCLUDING WARRANTIE OF MERCHANTABILITY AND FITNE FOR A PARTICU-

LAR PURPO E TO ONE (1) YEAR FROM THE DATE OF FIR T

PURCHA E PRICE OF THE PRODUCT AND GHP GROUP INC., PRODUCT HALL NOT BE

LIABLE FOR ANY OTHER DAMAGE WHAT OEVER INCLUDING INDIRECT, INCIDENTAL OR

CON EQUENTIAL DAMAGE .

ome states do not allow a limitation on how long an implied warranty lasts or an exclusion or lim-

itation of incidental or consequential damages, so the above limitation on implied warranties, or

exclusion or limitation on damages may not apply to you.

This warranty gives you specific legal rights, and you may also have other rights that vary from

state to state.

Contact GHP Group, Inc., for consumer information, technical assistance and to obtain

replacement parts at 1-877-447-4768. You will need to provide the following information when

communicating with the help desk:

• Heater type and model number

• erial Number

• Description of the part or problem

GH Group, Inc., Skokie, IL 60076-4034

hone: 1-877-447-4768

DURAHEAT_FA_SERIES-MANUAL_ENG_FNL:Layout 1 07/04/2009 4:55 PM Pa e 1

PROPANE CONSTRUCTION HEATER

USER’S INSTRUCTION MANUAL

GENERAL HAZARD WARNING:

FAILURE TO COMPLY WITH THE PRECAUTIONS AND INSTRUCTION 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 ELECTRIC 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

INSTRUCTION MANUAL, LABELS, ETC. CONTACT THE MANUFACTURER.

RETAIN THIS INSTRUCTION MANUAL FOR FUTURE REFERENCE

CSA 2.14a-2007, ANS Z83.7a-2007

2009-04 Rev.1

GFA40 (40,000 BTU/HR, FORCED - AIR)

GFA50A (30,000/50,000 BTU/HR, FORCED - AIR)

GFA100A (70,000/100,000 BTU/HR, FORCED - AIR)

GFA150A (120,000/150,00 BTU/HR, FORCED - AIR)

Duraheat

MODELS:

DURAHEAT_FA_SERIES-MANUAL_ENG_FNL:Layout 1 07/04/2009 4:55 PM Pa e 2

Page 1

TABLE OF CONTENTS

• ntroduction&Specifications ............................................. 2

•GeneralSafety nstructions ............................................... 3

•ProductFeatures ....................................................... 3

•UnpackingHeater ...................................................... 4

•Size&CapacityOfPropaneCylinders...................................... 4

• nstallationToThePropaneGasTank ...................................... 5

•RefillingThePropaneGasTank ........................................... 5

•LeakChecking&LocationHeater ......................................... 6

•Lighting&Shutdown nstructions ......................................... 6

•TestFiringHeater&Storage ............................................. 7

•Troubleshooting ........................................................ 7

•WiringDiagrams ....................................................... 8

•ReplacementPartsList .................................................. 9

llustrated Parts Breakdown -GFA40/GFA50A ............................ 9

PROPANE CONSTRUCT ON HEATER LLUSTRATED : GFA40/GFA50A ................. 10

llustrated Parts Breakdown -GFA100A/GFA150A......................... 11

PROPANE CONSTRUCT ON HEATER LLUSTRATED: GFA100A / GFA150A . . . . . . . . . . . . . . 12

• Warranty nformation

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,

PAIN THINNERS, DUST PARTICLES OR UNKNOWN CHEMICALS.

WARNING: NOT FOR HOME OR RECREATIONAL VEHICLE USE.

DURAHEAT_FA_SERIES-MANUAL_ENG_FNL:Layout 1 07/04/2009 4:55 PM Pa e 3

WARNING: Not for use with ductwork.

Dura Heat ropane Forced Air Construction Heaters

The heater is designed and approved for use as a construction heater under ANS Z83.7., CSA2.14

t is hard to anticipate every use which may be made of this heater. CHECK WITH YOUR LOCAL

FIRE SAFETY AUTHORITY IF YOU HAVE UESTIONS ABOUT APPLICATIONS.

Other standards govern the use of fuel gases and heat producing products in specific applications.

Your local authority can advise you about these.

IM ORTANT:Read this user's manual carefully and completely before trying to operate or

service this heater. Improper use of this heater can cause serious injury or death from fire,

explosion and carbon monoxide poisoning.

This is a direct-fired forced-air construction heater for either indoor construction or outdoor use.

ts intended use is primarily the temporary heating of buildings or structures under construction,

alteration or repair. All the products of combustion generated by the heater are forced through the

heater and released into the area being heated. This heater operates at approximately 98%+ combustion

efficiency but still produces a small amount of carbon monoxide. Humans can tolerate small

amounts of carbon monoxide for short periods. Carbon monoxide can build up in a heated space and

failure to provide adequate ventilation could result in poisoning or death.

Model No. GFA40 GFA50A GFA100A GFA150A

nput Rating 40,000 BTU/hr

30,000 BTU/hr

50,000 BTU/hr

70,000 BTU/hr

100,000 BTU/hr

120,000 BTU/hr

150,000 BTU/hr

Type of Gas Propane Propane Propane Propane

Gas Supply Pressures

to Regulator Maximum

Cylinder Pressure Cylinder Pressure Cylinder Pressure Cylinder Pressure

Minimum (for purpose

of nput Adjustment) 5psig 5psig 5psig 5psig

Manifold Pressure 11” W.C 11” W.C 11” W.C 11” W.C

Gas Consumption 1.9lbs/hr 1.4lbs/hr

2.3lbs/hr

3.3lbs/hr

4.6lbs/hr

5.6lbs/hr

7.0lbs/hr

Electrical nput 120V, 60Hz, 1 Ø 120V, 60Hz, 1 Ø 120V, 60Hz, 1 Ø 120V, 60Hz, 1 Ø

Amperage Load 0.68amps 0.65amps 0.7amps 0.7amps

Fan Unload

Load

3550rpm

3000rpm

3570rpm

3300rpm

3580rpm

3300rpm

3580rpm

3300rpm

gnition

Piezo/Manual Spark Continuous Spark Continuous Spark Continuous Spark

Spark Gap 0.16” 0.16” 0.16” 0.11”

Size (L x W x H)

18.1” x 8.1” x 15.3” 18.1” x 8.1” x 15.3” 25” x 12.8” x 16”

25” x 9” x 16.9”

25” x 11.6” x 17.3” 25” x 9” x 16.9”

Weight 13.7lbs/14lbs

(6.2kg/6.35kg) 14.3lbs (6.48kg) 21.5lbs/21lbs/20.8lbs

(9.75kg/9.5kg/9.4kg) 21.2lbs (9.6kg)

Page 2

S ECIFICATIONS:

DURAHEAT_FA_SERIES-MANUAL_ENG_FNL:Layout 1 07/04/2009 4:55 PM Pa e 4

Page 3

GENERAL SAFETY INSTRUCTIONS:

Accidents are always tragic especially because so many of them could have been prevented with

little care and judgment. There are some basic good practices, we hope you will follow for safe

use of your heater.

IM ORTANT SAFETY INFORMATION:

• Children should be carefully supervised, when they are in the area.

• Always maintain proper clearance from combustible materials. Minimum clearance from com-

bustibles. Side - 24”; Top - 36”; Front - 72”. Floor -noncombustible.

• Heater must be placed on level and stable surface.

• Never place anything including clothes or other flammable items on the heater.

• The appliance area shall be kept clear and free from combustible materials, gasoline and other

flammable vapours and liquids.

• Do not modify or operate a heater which has been modified.

• Adequate clearance for accessibility and for combustion & ventilation air supply must be main-

tained at all times when the heater is operating.

• Service and repair should be done by a qualified service person. The heater should be inspected

before each use and at least annually by a qualified person. More frequent cleaning may be

required as necessary. Do not service while hot or operating.

• Never connect heater to an unregulated gas supply.

• The heater is shipped from the factory for LP(Propane) gas. This heater is for use with

propane gas only, do not convert heater to any other gas. nstallation must conform to local

codes or, in the absence, with the standard for the Storage and Handling of Liquefied

Petroleum Gases ANS /NFPA NFPA 58 and the Natural Gas and Propane nstallation Code

CSA B149.1

• The minimum and maximum inlet pressures to the regulator from the gas tank are 5 psi and bottle

pressure, respectively. Use only the regulator & hose assembly provided with the heater. nspect

the regulator/hose assembly prior to each use of the heater. f there is excessive abrasion or wear,

or hose is cut, replace with regulator/hose assembly listed on the parts list prior to using this

heater.

• Gas supply connections should be checked using a 50/50 solution of liquid dish soap and never use

a flame to check for gas leaks.

• The electrical connection & grounding must comply with National Electrical Code.

ANS /NFPA 70 or in Canada CSA C22.1, Canadian Electrical Code, Part 1. Use only a properly

grounded three (3) prong receptacle.

• Do not restrict inlet or outlet by any means. The flow of combustion and ventilation air is not to be

obstructed.

• Forced air heaters should not be directed toward any propane or gas container within 20 feet of the

exit nozzle. The heater should also be located at least 6 feet away from any propane gas container

(regulations in Canada are 10 feet).

• The propane cylinder supply system must be arranged to provide for vapour withdrawal from the

operating cylinder.

WARNING: Motor and fan must be running before lighting, during operation and at shutdown, in

order to prevent a flame-out condition which could result in personal injury or property damage.

RODUCT FEATURES:

• Portable, Stable & Fully Assembled • 100% Safety Shutoff System

• Wind Resistant & Rain Protected • Adjustable nput Ratings

• Continuous Spark gnition or Piezo Electric Spark gnition

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Page 4

UN ACKING:

1. Remove heater from carton.

2. Remove all protective packing applied to heater for shipment.

3. Retain cartons and packaging material until unit is operated and found in good condition.

4. Check heater for any shipping damage. f heater shows any external or internal

damage, promptly inform dealer/distributor where you purchased heater.

INFORMATION ON SIZE * CA ACITY OR RO ANE GAS CYLINDERS:

The chart below shows the number and size of propane tanks needed to run this heater.

*Less gas is vaporized at lower temperatures.

You may need two or more 100 pound tanks or one larger tank in colder weather.

(See the parts list for your model of heater to get the specified regulator assembly.)

The propane (L ) gas tank must also be equipped with the following:

Temperature

(°F) At tank

Number of Tanks

40,000-50,000 BTU/h 100,000 BTU/h 150,000 BTU/h

Above 32°F 1 - 20lb 2 - 100lb 2 - 100lb

32°F 1 - 20lb 2 - 100lb 2 - 100lb

20°F 1 - 20lb 3 - 100lb 3 - 100lb

10°F 1 - 20lb 3 - 100lb 3 - 100lb

-10°F 2 - 20lb Use Larger Tank Use Larger Tank

-20°F 1 - 100lb Use Larger Tank Use Larger Tank

• A collar to protect the Propane gas valve.

• A shutoff valve terminating a Propane gas cylinder valve outlet as specified in the

American National Standards for Compressed Gas Cylinder Valve Outlets and nlet

Connections.

• A safety relief valve having direct communications with the vapor space of the tank.

• An arrangement of vapor withdrawal.

The propane (L ) gas pressure regulator and hose assembly supplied with this heater

must be used without alteration.

The hose assembly shall be visually inspected prior to each use of the heater. f it is evident that

there is excessive abrasion or wear, or the hose is cut, it must be replaced prior to the heater being

put into operation. The replacement hose assembly shall be that specified by the manufacturer.

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Page 5

INSTALLATION TO THE RO ANE GAS TANK:

IM ORTANT: You must use a propane/LP gas supply cylinder that is compatible with the connec-

tion device provided with the hose and regulator.

1. Provide propane/LP supply system (see Propane/LP Supply, page 4).

2. Connect fuel gas fitting hose/regulator assembly to propane LP tank(s). Turn fuel fitting counter-

clockwise into threads on tank. Tighten firmly using a wrench. MPORTANT: Position regulator

so that hose leaving the regulator is in a horizontal position (see Figure 1)

3. Connect hose to heater inlet. Tighten firmly using a wrench. You must use the regulator supplied

with heater.

4. Open propane/LP supply valve on propane/LP tank(s) slowly. NOTE: f not opened slowly,

excess flow device in regulator may stop gas flow. f this happens, close propane/LP supply valve,

wait one minute (or until you hear a click) and open again slowly.

5. Check all connections for leaks. Apply a 50/50 solution of liquid dish soap and water to gas joints.

Bubbles forming show a leak that must be corrected.

6. Close propane / LP supply valve before attempting to repair connection.

WARNING: Purging and filling of LP gas tanks must be performed by personnel who has

been thoroughly trained in accepted LP gas industry procedures. Failure to follow these

instructions may result in explosion, fire, severe personal injury, or death.

REFILLING THE RO ANE GAS TANK:

ALL NEW CYLINDERS MUST BE URGED BEFORE THE FIRST FILLING.

• Turn heater gas valve knob and gas tank valve to OFF position.

• Propane tank valve equipped with the old style fitting has LEFT HANDED THREADS. Turn POL

fitting CLOCKW SE to loosen. Protect POL fitting when disconnected from tank.

• Have tank filled by your local Propane gas supplier.

• Some propane tanks have a bleed-off valve. This valve should be inspected for leaks after each filling

of the tank. Turn clockwise to close the valve.

• Fasten full Propane tank and connect POL fitting to tank valve by turning COUNTERCLOCK-

W SE.

• With heater gas valve knob still in the OFF position, turn ON tank valve and check for leaks with

soap solution.

DURAHEAT_FA_SERIES-MANUAL_ENG_FNL:Layout 1 07/04/2009 4:55 PM Pa e 7

Page 6

Propane is safe to use when properly handled. Careless handling of the Propane gas tank could result

in fire and/or an explosion. Therefore:

•Always keep tank/cylinder securely fastened in an upright position.

• Avoid tipping tank on its side when connected to a regulator since this may cause damage to

diaphragm in regulator.

• Handle valves with care.

• Never connect an unregulated Propane tank to construction heater.

• Do not subject Propane tank to excessive heat.

• Tightly close the gas shutoff valve on the Propane tank after each use.

• The POL fitting must be protected when disconnected from the propane tank.

• Never store a Propane gas tank inside a building or in the vicinity of any gas burning appliance.

THE DISCONNECTED TANK MUST NEVER BE STORED IN A BUILDING, GARAGE

OR ANY OTHER ENCLOSED AREA.

LEAK CHECKING:

Check all gas connections with a soap solution to be sure they are tight and leak proof.

• The installation of your heater must meet all local codes and/or gas utility requirements or, in the

absence of local codes, with the Storage and Handling of Liquefied Petroleum Gases,

ANS /NFPA 58 and the Natural and Propane nstallation Code, CSA B149.1.

• The minimum clearances to combustible construction: Side - 24”; Top - 36”; Front - 72” must be

maintained at all times.

• The hose assembly should be visually inspected prior to each use of the heater. f it is evident that

there is excessive abrasion or wear, or the hose is cut, it must be replaced prior to the heater being

put into operation.

• The replacement hose assembly shall be that specified by the manufacturer (See page 11 for part

numbers).

LIGHTING INSTRUCTIONS:

WARNING: Motor and fan must be running before lighting, during operation and shutdown, in

order to prevent a flame-out condition which could result in personal injury or property damage.

1. Connect power cord to a properly grounded three (3) prong 120V, 60Hz, single phase receptacle.

2. Turn gas valve knob clockwise to OFF position.

3. Wait five (5) minutes to clear any gas. Then smell for gas, if you don't smell gas, go to next step.

4. Turn gas supply ON by turning Propane tank valve counterclockwise.

5. Push in and turn gas control knob counterclockwise to “LOW/ GN”. This will light the burner. f

needed, keep pressing control knob until the burner lights and keep depressing and turning from

OFF to LOW/ GN on Piezo electric spark models. (“H GH/ GN”: n case of GFA40)

6. Keep the valve knob depressed for at least 30 seconds after lighting the burner. After 30 seconds

release valve knob.

7. f burner does not stay lit, repeat the lighting procedure.

8. When burner is lit, turn gas valve knob counterclockwise to desired setting. (All models, except

GFA40 has only one heat setting)

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Page 7

SHUTDOWN INSTRUCTIONS:

Shutoff Heater:

WARNING: Motor and fan must be running before lighting, during operation and at shutdown, in

order to prevent a flame-out condition which could result in personal injury or property damage.

Turn gas valve knob clockwise to OFF position.

Turn gas supply OFF by turning Propane tank valve clockwise to close.

Disconnect the power cord once the heater has cooled to ambient temperature.

TEST FIRING HEATER:

Test fire your construction heater, following the lighting instructions applicable to the gas control

system employed. Leak test all gas connections with soap solution. Soap bubbles indicate gas leak-

age. DO NOT use a match or flame to test for gas leaks.

STORAGE: Never store a Propane gas tank inside a building or in the vicinity of any gas or

oil burning appliance. When the Propane tank is not disconnected from the construction heater, the

gas tank and heater must be stored outdoors in a well ventilated area, out of the reach of children. f

for any reason the heater is to be stored indoors, the tank must be disconnected and stored outdoors

in a well ventilated area out of reach of children, in accordance with the standard for the the Storage

and Handling of Liquefied Petroleum Gases, ANS / NFPA 58 and CSA B149.1, Natural Gas and

Propane nstallation Code. The plastic tank valve plug supplied with your tank must be tightly

installed when the tank is disconnected from the heater.

MAINTENANCE INSTRUCTIONS:

1. Turn unit off, allow heater to fully cool and disconnect propane hose before performing any

Maintenance functions. Unplug the unit from the 120V receptacle.

2. Keep unit clean and keep the inside of the torpedo housing debris free.

3. Have unit checked by a qualified technician at least once a year, preferably prior to the heating season.

PROBLEM POSS BLE CAUSE CORRECT VE ACT ON

Fan does not turn

when electrical con-

nection is made.

1. No electric power to heater.

2. Fan blade contacts inside of heater housing.

3. Fan blade(s) bent

4. Fan motor defective.

1. Check current to electric outlet. f voltage is cor-

rect, check power cord and extension cord for

cuts and extension cord for cuts and breaks.

2. Be sure that housing is not damaged. Make sure

there are no obstructions to the fan.

3. Straighten blade(s) to match others.

4. Replace motor.

Heater will not fire.

1. No spark at ignitor.

2. mproper spark gap.

3. Bad electrode.

1. Check ignitor wire. Re-attach or tighten if loose.

Check Spark module. Replace if necessary.

2. Set gap to 0.16”

3. Replace Spark Plug.

Heater quits while

running.

1. nternal temperature too high causing limit switch

to shut down operation.

2. Damaged Control Valve.

3. Dust or debris build-up inside of heater.

1. f the heaters output is restricted, internal temper-

ature becomes too high. Move heater away from

any obstructions.

2. Replace Control Valve.

3.Clean inside of heater.

TROUBLESHOOTING:

Always be sure to follow proper maintenance procedures, by cleaning the heater once per

month during regular usage, and check spark gap at least once per season.

DURAHEAT_FA_SERIES-MANUAL_ENG_FNL:Layout 1 07/04/2009 4:55 PM Pa e 9

Page 8

WIRING DIAGRAMS:

CONTINOUS SPARK MODELS GFA100A/150A

CONTINOUS SPARK MODELS GFA50A

PIEZO/MANUAL SPARK MODELS GFA40

DURAHEAT_FA_SERIES-MANUAL_ENG_FNL:Layout 1 07/04/2009 4:55 PM Pa e 10

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