Space-Ray RFPA25-N6A Manuale utente

Form 41358010

Rev. July 06

Printed in U.S.A.

INSTALLATION AND OPERATION INSTRUCTIONS

FLOOR MODELS

RFPA25-N6A, RFPA25-L6A

WHAT TO DO IF YOU SMELL GAS

* Do not try to light any appliance.

* Do not touch any electrical switch; do not use any

phone in your building.

* Immediately call your gas supplier from a neighbors

phone. Follow the gas supplier's instructions.

* If you cannot reach your gas supplier, call the fire

department.

WARNING: Improper installation, adjustment, alteration,

service or maintenance can cause property damage, injury

or death. Read the installation, operating and maintenance

instructions thoroughly before installing or servicing this

equipment.

SAVE FOR FUTURE REFERENCE

Space-Ray Division, Gas Fired Products, Inc. P.O. Box 36485, Charlotte, NC 28236 (704) 372-3485

Form 41358010

July 06

TABLE OF CONTENTS

SECTION DESCRIPTION PAGE NO.

1 General Information 1

2 Specifications 2

3 Burner Target Installation 3

4 Adding Optional Reflector 3

5 Minimum Clearances to Combustibles 4

6 Gas Connections and Regulation 4

7 Instructions for Pressure Test Gauge Connection 5

8 Information for LP Gas Floor Models Only 5

9 Ventilation and Combustion Air 6

10 Lighting and Shutdown Instructions 6

11 Cleaning and Annual Maintenance 7

12 Replacing Parts 7

13 Replacement Parts List & Guide 8

1. GENERAL INFORMATION

INSTALLER: This manual is the property of the owner. Please present this manual to the owner when you leave

the jobsite.

This heater is a self-contained infrared radiant floor model heater for use in locations where flammable gases or vapors

are not generally present and is intended for the heating of non-residential spaces.

INSTALLATION REQUIREMENTS

nstallation of this heater must be in accordance with all applicable codes shown in the instructions and/or the local

codes and authorities having jurisdiction. Heaters shall be installed by a licensed contractor or licensed installer.

Clearances to combustibles as outlined in this manual should always be observed.

Every heater shall be located with respect to building construction and other equipment so as to permit access to the

heater. Each installer shall use good installation practices when locating the heater and must give consideration to

service accessibility.

This heater is for INDOOR INSTALLATION ONLY. While the products of combustion are expelled into the building,

national codes require ventilation in the building to dilute these products of combustion. This ventilation may be

provided by gravity or mechanical means. Refer to Section 9 of this manual for minimum requirementsfor ventilation

and combustion air.

Form 41358010

July 06

Copies of the National Fuel Gas Code (ANSI Z223.1 - latest edition) are available from the American Gas Association

Laboratories, 8501 E. Pleasant Valley Road, Cleveland, OH 44131. All NFPA codes are available from the National

Fire Protection Association, Batterymarch Park, Quincy, MA 02269.

WARNING: DO NOT move, handle or service a hot or operating heater.

WARNING: Heaters must only be used on stable and level surfaces for safe operation.

This equipment, its related accessories and by-products of operation contain

chemicals known to the state of California to cause cancer, birth defects and

other reproductive harm.

2. SPECIFICATIONS

MODEL NO.

GAS TYPE

INPUT BTU/HR

ORIFICE SIZE

RFPA25-N6A

RFPA25-L6A

NATURAL

PROPANE

250,000

#33 (.1130)

#42 (.0935)

Gas Pipe connection:½" NPT Female

MODEL SUFFIXES:

N - Natural Gas

L - Propane Gas

6A - Standing Pilot Ignition

100% Safety Shutoff, Manual Ball Valve

DIMENSIONS

RFPA25

HEATER

PACKAGED

SHIPPING WEIGHT

18" Dia. x 48-9/16"

18-1/2" x 18-1/2" x 51-1/2"

62 LBS.

Form 41358010

July 06

3. BURNER TARGET INSTALLATION

The burner target must be assembled on the burner before operating the heater. Unscrew the burner and install the

burner target as shown on the drawing below. The target is packaged separately to prevent damage to the burner

during shipment.

4. ADDING OPTIONAL REFLECTOR

A 180oreflector can be used where it is desirable to direct the heat into a

specific work area. This is ordered as an accessory item, Part No.

04310010.

INSTALLATION INSTRUCTIONS

1. Loosen and remove the 1/2-13 hex nut

and washer from the heater assembly.

2. Lift the head from the heater.

3. Place reflector on outside of expanded

metal guard with bottom edge inside lip

of the base head assembly.

4. Replace upper head with lip over the

expanded guard and reflector.

5. Resecure with the nut and washer.

Form 41358010

July 06

5. MINIMUM CLEARANCES TO COMBUSTIBLES

The heater shall be operated only on a NON-COMBUSTIBLE, level floor. Minimum clearances to combustible walls

and ceilings are listed below:

MODEL RFPA25

FRONT

SIDES

REAR

TOP

CLEARANCE FROM

PROPANE

CYLINDER

WITH REFLECTOR

WITHOUT REFLECTOR

288"

----

144"

96"

----

168"

20 FEET

REFER TO BULLETIN NFPA 58 AND LOCAL CODES

WARNING:KEEP PERSONNEL AND COMBUSTIBLE MATERIAL AT LEAST 12 FT. FROM

HEATER MODEL RFPA25 WHEN IN OPERATION.

6. GAS CONNECTIONS AND REGULATION

1. Connect to the supply tank or manifold in accordance with the latest edition of National Fuel Gas Code

(ANSI Z223.1) and local building codes. Authorities having jurisdiction should be consulted before the

installation is made.

2. Pipe joint compounds must be resistant to the action of liquefied petroleum gases.

3. Where local codes do not prohibit, an A.G.A. or U.L. approved flexible connection is recommended between the

rigid piping and the heater. A union and an approved shut-off valve should be installed before the control valve

inlet. The shut-off valve should be installed within 6 feet of the union.

4. This appliance is equipped with a manual gas valve and a pilot regulator. The maximum supply

pressure to the appliance is 5 PSIG. If the line pressure is more than the maximum supply

pressure, then use a line regulator which corresponds to the supply pressure.

5. The pilot burner is regulated separately to operate at 11.0”W.C. The pilot flame can be reduced by turning the pilot

valve handle counterclockwise should this be desired.

6. After gas connections have been made, make sure the heater and all gas outlets are turned off before the main gas

supply is turned on. Turn the gas pressure on and check for leaks. To check for leaks, apply a solution of soap

suds to all connections and joints or check by one of the methods listed in Appendix D of ANSI Z223.1 (latest

edition) Natural Fuel Gas Code. DO NOT USE AN OPEN FLAME OF ANY KIND TO TEST FOR LEAKS.

Form 41358010

July 06

7. INSTRUCTIONS FOR PRESSURE TEST GAUGE CONNECTION

Supply Pressure: Installer to provide a 1/4" N.P.T. plugged tapping, accessible for test gauge connection

immediately upstream of the gas supply connection to the heater.

Manifold Pressure: Turn gas valve to "OFF" position. Remove 1/4" plug from manifold downstream from the manual

ball valve and connect 1/4" nipple to the tapped hole. Connect gauge to nipple. Turn on the gas supply.

With the main burner operating, check burner manifold pressure using a pressure gauge suitable for the operating

pressure of the heater. If adjustment is required, remove cover screw of the appliance regulator. Using a small

screwdriver, turn adjustment screw clockwise to increase or counter-clockwise to decrease gas pressure to

burner. Replace cover screw.

8. INFORMATION FOR LP GAS FLOOR MODEL HEATERS ONLY

Heaters used with LP gas must be installed in accordance with the latest edition of the National Fuel Gas Code -

NFPA54, Standard for the Storage and Handling of LP Gas - NFPA 58, all state and local codes or the authority having

jurisdiction.

This heater is intended for industrial or construction heating and it must never be used for residential/domestic heating.

WARNING:A single stage regulator must be installed on the tank or cylinder to reduce the tank or

cylinder pressure to the heater. Operation of this heater without this regulator can cause damage to

the heater and personal injury.

The heater must be connected to the tank or cylinder by a UL Listed hose assembly or hard piping. A 25 foot

assembly of UL Listed hose is available from Space-Ray under Part No. 42035020. A single stage LP gas regulator

(operation range: 250 PSIG maximum inlet and 5 PSIG outlet) is available as Part No. 03483140.

The volume of a given quantity of liquid LP gas in a container is directly related to its temperature. As a result, the

vaporization rate of a tank or cylinder will decrease as the temperature drops and as the percentage of liquid in the

container becomes smaller.

GAS TYPE

MANIFOLD PRESSURE

SUPPLY PRESSURE

Natural

5 PSIG

Propane

5 PSIG

Form 41358010

July 06

WARNING: Due to the continuous length of time the heater might be in operation, Space-Ray DOES NOT

recommend the use of a 100 lb. cylinder with the RFPA25 heater because of the large BTU input. Manifolding

several cylinders together is a practical way of increasing the time of operation of these heaters. Operation of

the heater with insufficient sized cylinders or when the liquid level becomes too low will result in poor heater

performance and can cause sooting. Consult your LP gas dealer for proper sizing of container.

Always turn the gas off at the tank or cylinder when the heater is not in use. When in operation, keep the heater a safe

distance from the LP gas container and combustible materials as indicated on the heater and in the instructions.

Fasten LP cylinders securely so they cannot be knocked over.

9. VENTILATION AND COMBUSTION AIR

This heater requires ventilation in the building to dilute the products of combustion and provide fresh air for

efficient combustion. The minimum recommended vent flow required is as follows:

RFPA25: 1000 cfm

The combustion air enters through the heater base and must not be restricted. DO NOT block or enclose any part

of the heater base. All ventilation in the building must be at a level above the height of the heater.

10.LIGHTING AND SHUTDOWN INSTRUCTIONS

MODELS WITH IGNITION SUFFIX "-6A"

1. Turn manual burner valve handle to “OFF”position. Push in silver button on safety valve and light pilot. Hold

button in firmly for approximately 30 seconds or until pilot remains lighted without holding button in. If air is in

line, it will take a few minutes for gas to reach pilot.

2. Turn manual burner valve handle to full “ON”position. Sooting will

occur if this heater is operated with the valve handle in any

position except full “ON”.

3. If heater does not light, shut off gas completely for five minutes

before attempting to relight.

4. To turn off main burner and pilot gas, turn manual burner and pilot valves to “OFF”position.

CAUTION: DO NOT OPERATE MAIN BURNER AT ANY SETTING LESS THAN FULL "ON" POSITION.

SOOTING WILL OCCUR!

Form 41358010

July 06

11. CLEANING AND ANNUAL MAINTENANCE

This heater must be cleaned and serviced at least once before the start of each heating season or at any time the

infrared emitter show signs of collecting any foreign material on its surface. Maximum heating efficiency and clean

combustion will be maintained by keeping the emitter and burner clean. To clean the heater follow these instructions:

1. Turn off the gas supply to the heater.

2. Remove and clean the burner, burner tube and orifice. Clean these components as required to provide a free

passage of air and gas.

3. If the emitter shows any accumulation of material in the ports, remove the heater top and the expanded

metal guard to expose the emitter and use a high pressure air hose to blow the ports clean. If this does

not clean the holes, remove the four (4) screws holding the emitter to its mounting ring and remove the

emitter so that it can be cleaned both inside and out with a wire brush and then blown out with a high

pressure air hose.

4. Inspect the pilot burner and remove any foreign material with a brush or an air hose.

5. Reassemble the heater, test all connections for leaks and test the heater to be sure it is now operating properly.

12. REPLACING PARTS

At all times when parts are being replaced, ensure that both gas and electrical supplies are disconnected.

Various parts are available from the factory for replacement by a licensed service person. Refer to exploded parts

guide in Section 13 for all replacement parts.

Date of Installation _______________________

Heater Model Number RFPA25 - ______ N6A = Natural Gas

Heater Serial Number _____________________ L6A = Propane Gas

Form 41358010

July 06

13. REPLACEMENT PARTS LIST –RFPA25 –(N,L) 6A

ITEM

NO.

PART

NO.

DESCRIPTION

04114000

04593030

04485000

41258000

42011000

07022000

02125130

02126050

04304000

40338000

04783010

41806020

41795020

41795010

03399020

03399030

03345010

03345020

03437000

03401030

41684010

03527000

03601010

03600010

03258330

03258420

03384020

30524030

30285010

02004030

02126060

02152010

04508020

04088000

41358010

43630170

Upper Head

Expanded Metal Guard

Heat Exchanger Assembly

Main Burner Assembly (complete)

Burner Top & Target Support Assembly

Burner Tube

Round Head Machine Screw #10-24 x 1/2”(2 each)

Nut- Square #10-24 (2 each)

Air Shutter

Burner Target

Base Assembly

Label Plate Holder

Pilot Shield - Outer

Pilot Shield - Inner

Pilot Burner & Orifice Fitting - Nat. #J129DDA3223

Pilot Burner & Orifice Fitting - LP #J129DDA4212

Pilot Orifice - Nat (.023") #Y90AA - 3223

Pilot Orifice - LP (.012") #Y90AA - 4212

Pilot Burner less Orifice #J129DDA

Thermocouple 18”

Pilot Tubing

Break Away Fitting –(included with pilot orifice)

Nut, Compression 1/4”(included with pilot valve)

Sleeve, Compression 1/4”(included with pilot valve)

Main Burner Orifice (Nat.) #33

Main Burner Orifice (LP) #42

Pilot Valve, 1/8 MPT x 1/4”OD Tube

Pilot Regulator 1/4 x 3/8

Manual Ball Valve 3/8”

Round Head Machine Screw #10-32 x 1-1/8”(2 each)

Nut –Square #10-32 (2 each)

Thread Cut Screw #10-32 x 3/8”(2 each)

Radiation Shield (nameplate holder)

Bracket, Radiation Shield

Instruction Manual (not shown)

Nameplate Label (not shown) State Gas Type

Form 41358010

July 06

02127150

02129160

41847000

02247010

41254040

41254050

03166000

03330040

03338100

03338110

03339040

03340080

30643010

30527000

30527010

30528000

41849000

04088990

42889000

02104060

02129050

02240010

Nut - Hex 1/2-13

Washer - Flat 1/2

Washer - Burner Fitting

Hex Head Machine Screw 1/2-13 x 1

Control Arm Complete - Nat. (less pilot shields/burner)

Control Arm Complete –LP (less pilot shields/burner)

Pilot Safety Gas Valve #H19LA-1

Nipple, 3/8 NPT x 1-1/2”Long

Reducing Bushing, 1/2 x 1/4 NPT

Reducing Bushing, 3/8 x 1/8 NPT

Plug, 1/4 NPT (pressure tap)

Cross, 1/2 NPT

Street Ell, 1/4

Nipple, Hex Reducing 1/4 MPT x 1/8 MPT

Nipple, Hex Reducing 1/2 MPT x 3/8 MPT

Adapter, Reducing 1/2 FPT x 3/8 MPT

Manifold Holder Stud

Spacer Washer (2 each)

Orifice Holder Fitting

Speed Nut #10 (4 each)

Washer –Flat #10 (4 each)

Hex Head Sheet Metal Screw #12 x 3/4”(4 each)

MODEL NUMBER SUFFIXES

N - Natural Gas

L - LP Gas

6A - 100% Gas Shutoff Control - Manually Operated

IMPORTANT

PLEASE ORDER BY PART NUMBER - NOT BY ITEM NUMBER.

ALSO REFER TO COMPLETE MODEL NUMBER WHEN ORDERING.

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