65-0270 V4730A/V8730A, V4750A/V8750A Double Block Safety … · Torsion and Bending Stress: Pipe connections meet EN161, Group 2, requirements. Electrical Equipment: Dc coils with

PRODUCT DATA

® U.S. Registered Trademark© 2004 Honeywell International Inc. All Rights Reserved 65-02703

V4730A/V8730A, V4750A/V8750A Double Block

Safety Shutoff Valves

APPLICATIONThe V4730A/V8730A, V4750A/V8750A Double Block Valves are used for control of gaseous fuels in gas-fired power burners, atmospheric gas boilers, ovens, furnaces, incinerators, roof-top units, makeup air units and other gas consuming appliances.

FEATURES Double block safety shutoff valves for control of

gaseous fuels in gas consuming appliances in accordance with international standards.

Main body with two single-seat shutoff valves. Provides for mounting optional flanged pressure

switches. Closing time: < 1 second. Coils suitable for permanent energization. Fine mesh screen (strainer) between inlet flange and

main body. Various pressure tap points at main body available,

when no additional valves or pressure switches are used.

Plug connector according to DIN 43650, included. Adjustable maximum flow rate limiter (all models). Adjustable step opening pressure (V4750A/V8750A

only). Replaceable pipe flange adapters included. First and second internal shutoffs can be

independently energized for intermittent pilot applications.

Position indication lamp for each valve stage.

V4730A/V8730A

V4750A/V8750A

ContentsApplication ........................................................................ 1Features ........................................................................... 1Specifications ................................................................... 2Ordering Information ........................................................ 2Installation ........................................................................ 4Adjustments and Final Checkout ...................................... 5Operation .......................................................................... 7Troubleshooting ................................................................ 10Service Information .......................................................... 10

V4730A/V8730A, V4750A/V8750A DOUBLE BLOCK SAFETY SHUTOFF VALVES

65-02703 2

ORDERING INFORMATIONWhen purchasing replacement and modernization products from your TRADELINE® wholesaler or distributor, refer to the TRADELINE® Catalog or price sheets for complete ordering number.

If you have additional questions, need further information, or would like to comment on our products or services, please write or phone:

1. Your local Honeywell Automation and Control Products Sales Office (check white pages of your phone directory).2. Honeywell Customer Care

1885 Douglas Drive NorthMinneapolis, Minnesota 55422-4386

In CanadaHoneywell Limited/Honeywell Limitée, 35 Dynamic Drive, Scarborough, Ontario M1V 4Z9.International Sales and Service Offices in all principal cities of the world. Manufacturing in Australia, Canada, Finland, France, Germany, Japan, Mexico, Netherlands, Spain, Taiwan, United Kingdom, U.S.A.

SPECIFICATIONSThe specifications in this section are related to the main valve. The valve must be used in combination with a burner control.

Models: See Table 1.

Table 1. Model Number and Specifications.

Maximum Operating Pressure (UL):2.9 psi (200 mBar), except for 1-1/4 in. size, which has maximum operating pressure of 1.45 psi (100 mBar)120V model and 1 psi (70 mbar)24V model

NOTE: CSA Certification to 1/2 psi.

Maximum Operating Pressure (CSA):All valves are rated for 1/2 psi (35 mbar).

Connections:1/8 in. (3 mm) pressure taps at inlet and outlet flanges. Eight

flange connections are provided at the main body to mount either a pressure switch (low or high) or a Valve Proving System (VPS).

Torsion and Bending Stress: Pipe connections meet EN161, Group 2, requirements.

Electrical Equipment: Dc coils with combined rectifier inside the cover.

Electrical Connection: Standard DIN plug connector with 36 in. (914 mm) leadwires, included.

Valve Position Indicator Lamps:Inboard (closest to the valve body)V1.OutboardV2.

Ambient Temperature Range: 5°F to 140°F (-15°C to +60°C).

Model NumberPipe Size (in.

NPT, Nominal)Voltage Rating(Vac, 50/60 Hz)

Current Rating in Amperes (A)Capacity (cfh), Natural Gas (1 in.

w.c., delta P)V1 V2 V1 + V2 With Screen Without Screen

V4730A1000 1/2 120 0.16 0.16 0.32 221 225V4730A1018 3/4 359 362V4730A1026 1 0.25 0.25 0.50 546 567V4730A1034 1-1/4 582 634V8730A1001 1/2 24 0.78 0.78 1.56 221 225V8730A1019 3/4 359 362V8730A1027 1 0.86 0.86 1.72 546 567V8730A1035 1-1/4 582 634V4750A1005 1/2 120 0.16 0.16 0.32 221 225V4750A1013 3/4 359 362V4750A1021 1 0.25 0.25 0.50 546 567V4750A1039 1-1/4 582 634V8750A1006 1/2 24 0.78 0.78 1.56 221 225V8750A1014 3/4 359 362V8750A1022 1 0.86 0.86 1.72 546 567V8750A1030 1-1/4 582 634


3 65-02703

Coil Insulation Solenoid Valves: Class H insulation system.

Enclosure: IP 54 (NEMA 2).

Body Material: Aluminum alloy, die cast.

Strainer: Fine mesh screen (.0135 in. [0.34 mm] diameter), AISI 303 steel, serviceable after removing inlet flange screws. Meets EN 161 requirements for strainers.

Seals and Gaskets: Hydrocarbon resistant NBR and Viton rubber types.

Flange Kit: Consists of one flange with sealing plug, 1 O-ring and four screws.

Opening Time:Dead time maximum: 1 second.First valve opening: < 1 second.Second valve opening: < 1 second.

Maximum Allowable Leakage:Outerwall: 3 cu. in./hr (50 cm3/h) at test pressure of 0.087 psi

(6 mbar) and 7.83 psi (540 mbar).First valve: 2.4 cu. in./hr, (40 cm3/h) at test pressure of 0.087

psi (6 mbar) and 7.83 psi (540 mbar).Second valve: 2.4 cu. in./hr (40 cm3/h) at test pressure of

0.087 psi (6 mbar) and 7.83 psi (540 mbar).

High Pressure Test: In the Off condition, the valve will withstand 21.75 psi (1.5 bar) inlet pressure without damage.

NOTE: Attempts to operate the valve while in this condition will not cause damage.

Closing Time: Less than 1 second for all valves.

Maximum Working Frequency: One cycle per minute.

Duty Cycle: Coil suitable for permanent energization in cooperation with ignition controller.

Operational Voltage Range: The combination gas valve will function satisfactorily between 85% and 110% of the rated voltage.

Design Life: 500,000 cycles.

Dimensions: See Fig. 1-4.

Approvals:Gas Appliance Directive 90.396/EEC.PIN: 0063AT1198.Low Voltage Directive: 73/23/EEC.Electro Magnetic Compatibility Directive: 89/336/EEC.CSA: File: Certificate Number: 158158-1227192.Underwriters Laboratories, Inc. (UL): MH18476.Accessories:

32006652-001 Flange for 1/2 in. valve.32006652-002 Flange for 3/4 in. valve.

32006652-003 Flange for 1 in. valve.32006652-004 Flange for 1-1/4 in. valve.

Fig. 1. Approximate dimensions of V4730A/V8730A (1/2 in. and 3/4 in. pipe size) in in. (mm).

Fig. 2. Approximate dimensions of V4730A/V8730A (1 in. and 1-1/4 in. pipe size) in in. (mm).

M21009C

7-7/32 (185)

1-27/32(48)

4-7/32(107)

5-1/4 (133)

6-1/2 (166)

2 (51)

2-1/32(52)

3-7/8 (98)1-11/16(43)

PRESSURE SWITCH

OPTIONAL

M21008C

7-7/32 (185)

1-27/32(48)

4-7/32(107)

5-1/4 (133)

7-5/16 (240)

2 (51)

2-1/32(52)

3-7/8 (98)1-11/16(43)

PRESSURE SWITCH

OPTIONAL


65-02703 4

Fig. 3. Approximate dimensions of V4750A/V8750A (1/2 in. and 3/4 in. pipe size) in in. (mm).

Fig. 4. Approximate dimensions of V4750A/V8750A (1 in. and 1-1/4 in. pipe size) in in. (mm).

INSTALLATION

When Installing this Product1. Read these instructions carefully. Failure to follow them

could damage the product or cause a hazardous condition.

2. Check the ratings given in the instructions and on the product to make sure the product is suitable for your application.

3. The installer must be a trained, experienced flame safeguard technician.

4. After installation is complete, check out product operation as provided in these instructions.

WARNINGFire or Explosion Hazard.Can cause serious injury, death or property damage.1. Turn off the gas supply before beginning installation.2. Disconnect power supply to the valve actuator

before beginning installation to prevent electrical shock and damage to the equipment.

3. Do not remove the seal over the valve inlet and outlet until ready to connect piping.

4. The valve must be installed so that the arrow on the valve points in the direction of the gas flow, so that gas pressure helps to close the valve.

Mounting PositionThe gas valve can be mounted plus or minus 90 degrees from the vertical.

Mounting locationsThe distance between the gas valve and the wall/ground must be a minimum of 11-5/16 in. (30 cm).

Main Gas Connection1. Take care that dirt does not enter the gas valve during

handling.2. Remove the flanges from the valves.3. Use new, properly reamed, pipe, free from chips.4. Apply a moderate amount of good quality pipe dope,

resistant to the action of liquid propane (LP) gas only on the pipe threads.

5. Screw the flanges onto the pipes.6. Do not thread pipe too far into flange. Valve distortion or

malfunction can result from excess pipe in the flange.7. Make sure O-ring sealing surfaces are clean. 8. Make sure that the inlet and out flanges are in line and

separated from each other enough to allow the valve to be mounted between the flanges without damaging the O-ring.

9. Using general purpose lithium grease, grease the O-ring.

10. Install the O-ring in the O-ring grooves provided on the valve bodies (one O-ring per groove).

11. Mount the gas valve between the flanges, using the screws removed earlier.

12. Complete the electrical connections as instructed in the Electrical Connection section.

M20581A

7-1/4 (185)

1-27/32(48)

4-7/32(107)

5-1/4 (133)

8-21/32 (220)

2 (51)

2-1/32(52)

1-11/16 (43)

6-1/2(166)

M20582A

7-1/4 (185)

1-27/32(48)

4-7/32(107)

5-1/4 (133)

9-7/16 (240)

2 (51)

2-1/32(52)

1-11/16 (43)

7-5/16(186)


5 65-02703

WARNINGFire or Explosion Hazard.Can cause property damage, severe injury or death.Perform a soap and water solution leak test any time work is done on a gas system.

Electrical Connections

WARNINGElectrical Shock Hazard.Can cause serious injury or death.

Disconnect the power supply before beginning wiring to prevent electrical shock.

Wiring1. Use 14, 16 or 18 AWG copper conductor, 600 volt

insulation, moisture-resistant wire for line voltage connections. Recommended part numbers are TTW60C, THW75C or THHN90C.

2. Follow the instructions supplied by the appliance manufacturer. See Fig. 5 and 6 for reference.

Fig. 5. Four-pin electrical plug connector.

Fig. 6. Electrical connection diagram.

ADJUSTMENTS AND FINAL CHECKOUTThe following procedures are related to the adjustments on the main gas valve. For adjustment of the other devices (i.e., pressure switches), refer to the instructions supplied with the applicable device.

WARNINGFire or Explosion Hazard.Can cause serious injury, death or property damage.Only fully qualified, experienced flame safeguard technicians should make adjustments on the valve.

Pressure Tap Points (Fig. 7)The V4730A/V8730A, V4750A/V8750A, have a number of connection points for measuring pressure and/or mounting a pressure switch.

The following pressures can be measured:

1. Inlet pressuretap on inlet flange and on side of valve body (1,2).

2. Interim pressurepressure between the two shutoff valves (3).

3. Outlet pressuretap from flange (4).The corresponding numbers (2, 3) can be found on the side of the valve.

NOTE: To mount the C6097 Pressure Switch, refer to instructions in form 65-0237, furnished with the switch.

Fig. 7. Pressure tap points.

Second Valve, Fast Opening (V4730A/V8730A)To adjust the flow rate:

1. Remove the flat, round cap from the cover.2. Using a 3 mm (7/64 in.) hex wrench, turn the adjustment

screw counterclockwise to increase or clockwise to decrease the flow rate.

3. Snap the cap back on the cover.

V1(BLACK) 2 1

3

L2

M20583

(YELLOW)

(GREEN)

V2(BLUE)

1

1 FOR CONNECTION TO 1/2 INCH FLEXIBLE ELECTRICAL CONDUIT ONLY. MAXIMUM TORQUE 65 INCH-POUNDS.

V1

1

3

V2

M20584

2

BLACK BLUE

YELLOW

41

2 3

3

2

M17985C

OPTIONALC6097PRESSURESWITCH

P

P


65-02703 6

Second Valve, Slow Opening (V4750A/V8750A)Both the flow rate and the step pressure can be adjusted.

IMPORTANTTo ensure a satisfactory setting of the valve, the pressure drop over the valve should be at least 10% of the supply pressure or 1 in. w.c. (2.5 mBar), whichever is greater.

To adjust the flow rate (Fig. 8 and 9):

1. Remove the cap from the top of the coil by loosening both screws.

2. Place a wrench on the adjustment nut.3. Turn the wrench counterclockwise to increase or

clockwise to decrease the flow rate.

Fig. 8. Removing the cap.

Fig. 9. Turning the adjustment nut.

To adjust the step pressure (FIg. 8 and 10):

1. Remove the cap from the top of the coil by loosening both screws.

2. Place a screwdriver in the slot of the adjustment screw, located in the center of the top of the valve.

3. Turn the screwdriver counterclockwise to increase or clockwise to decrease step pressure.

4. Replace the cap on top of the coil.

Fig. 10. Turning the step pressure adjustment screw.

Opening Speed AdjustmentOpening speed can be adjusted between one second minimum and 90 second maximum (Fig. 11 and 12).

Fig. 11. Opening speed adjustment screw.

Fig. 12. Characterized opening.

M17979A

M17980A

M17981A

M17982B

SLOWEROPENING

FASTEROPENING

FLOW REGULATION

OPENING SPEED REGULATION

TIME M17983C

100% FLOW

0% FLOW


7 65-02703

Final Checkout of the InstallationSet the system in operation after any adjustment is completed and observe several complete cycles to ensure that all burner components function correctly.

OPERATIONThe V4730A/V8730A, V4750A/V8750A are normally closed valves. The valves open when energized and close when the power is removed.

WARNINGExplosion Hazard and Electrical Shock Hazard.Can cause explosion, serious injury or death.1. Do not put the system into service until you have

satisfactorily completed the Valve Leak Test, all applicable tests described in the Checkout section of the instructions for the flame safeguard control and any other tests required by the burner manufacturer.

2. All test must be performed by a trained, experienced flame safeguard technician.

3. Close all manual fuel shutoff valves immediately if trouble occurs.

After the installation is complete, cycle the valve several times with the manual fuel shutoff cock closed. Make sure the valve functions properly. Also, perform the Valve Leak Test before putting the valve into service.

Fig. 13 through 16 show the capacity of the valves with inlet screens in place.

Fig. 13. Capacity of V4730A/V8730A; V4750A/V8750A 1/2 in. valves, with inlet screen.

100

CFH NATURAL GAS

PRESSURE

DROP

INCHES

W.C.

M19528

10 50 1000500 100005000

0.1

1

10

100


65-02703 8

Fig. 14. Capacity of V4730A/V8730A; V4750A/V8750A 3/4 in. valves, with inlet screen.

Fig. 15. Capacity of V473A0/V873A0; V4750A/V8750A 1 in. valves, with inlet screen.

100

CFH NATURAL GAS

PRESSURE

DROP

INCHES

W.C.

M19529

10 50 1000500 100005000

0.1

1

10

100

100

CFH NATURAL GAS

PRESSURE

DROP

INCHES

W.C.

M19530

10 50 1000500 100005000

0.1

1

10

100


9 65-02703

Fig. 16. Capacity of V4730A/V8730A; V4750A/V8750A 1-1/4 in. valves, with inlet screen.

Valve Leak Test (Fig. 17)This is a test for checking the closure tightness of the gas shutoff valve. It should be performed only by trained, experienced flame safeguard technicians during the initial startup of the burner system or whenever the valve is replaced. It is recommended that this test also be included in the scheduled inspection and maintenance procedures. For a periodic inspection test, follow steps 1, 3, 4, 5, 8, 9, 10, 12, 13, 16 and 17.

1. De-energize the control system to make sure no power goes to the valve (C, Fig. 10).

2. Close the upstream manual gas cock (A).3. Make sure the manual test petcock (F) is closed in the

leak test tap assembly (D).4. Remove the leak test tap plug and connect the test

apparatus to the leak test tap (D).5. Close the downstream manual gas cock (E).6. Open the upstream manual gas cock (A).7. Run the valve to its open position (through the safety

system); then immediately de-energize the system to close the valve.

8. Immerse an 1/4 in. (6 mm) tube vertically 1/2 in. (13 mm) into a jar of water.

9. Slowly open the manual test petcock (F).10. When the rate of bubbles coming through the water

stabilizes, count the number of bubbles appearing during a ten-second period. Each bubble appearing during a 10 second period represents a flow rate of 0.001 cfh (28 cch).

11. Close the upstream manual gas cock (A).

12. Remove the leak test tap from the valve body.13. Using a small amount of pipe sealant on the 1/8 in.

(3 mm) NPT plug, reinstall the plug in pressure tap point P.

14. To test the second SSOV, remove the 1/8 in. (3mm) NPT plug from the flange pressure tap point 4.

15. Install the leak test tap into pressure tap point 4.16. Close the downstream manual gas cock E.17. Immerse the 1/4 in. (6 mm) tube vertically 1/2 in.

(13 mm) into a jar of water.18. Slowly open the manual test petcock (F).19. When the rate of bubbles coming through the water

stabilizes, count the number of bubbles appearing during a ten-second period. Each bubble appearing represents a flow rate of 0.001 cfh (28 cch). See Table 3.

20. Remove the leak test tap from the valve body.21. Using a small amount of pipe sealant on the 1/8 in.

(3 mm) NPT plug, reinstall the plug in pressure tap point 4.

Table 2. Maximum Bubbles per Pipe Size.

100

CFH NATURAL GAS

PRESSURE

DROP

INCHES

W.C.

M19531

10 50 1000500 100005000

0.1

1

10

100

Pipe Size (in. NPT)

Maximum Seat Leakage (UL)

Maximum Number of Bubbles in 10

seconds1/2 - 3/4 235 cch 61 275 cch 71-1/4 340 cch 8


65-02703 10

Fig. 17. Valve leak test.

After the Test1. Close the upstream manual gas cock (A).2. Close the manual test petcock (F), remove the test

apparatus, and close the leak test tap (D).3. Make sure the downstream manual gas cock (E) is

closed.4. Open the upstream manual gas cock (A) and energize

the valve through the safety system.5. Test with rich soap and water solution to make sure

there is no leak at the test tap (D) or any pipe adapter/valve mating surfaces.

6. De-energize the valve (C).7. Open the downstream manual gas cock (E).8. Restore the system to normal operation.

TROUBLESHOOTING

WARNINGElectrical Shock Hazard.Can cause serious injury or death.Use extreme caution while troubleshooting; line voltage is present.

IMPORTANTDo not replace the valve until all other sources of trouble are eliminated.

Troubleshooting ProcedureIf the valve does not open when the thermostat or controller calls for heat:

1. Check for line voltage at the valve leadwires or terminal block.

2. If there is no voltage at the valve leadwires or terminal block, make sure:a. line voltage power is connected to the master

switch.b. master switch is closed and overload protection

(circuit breaker, fuse or similar device) has not opened the power line.

3. If there is still no voltage at the valve leadwires or terminal block, make sure all appropriate contacts in the thermostat or controller, limits and flame safeguard controls are closed. If one or more are open, determine the cause(s); correct the trouble and proceed.

4. If there is proper voltage at the valve but the valve still does not open, check for normal gas pressure.

5. If the valve still does not open, replace the valve.If the valve does not close when one or more of the appropriate contacts in the thermostat, controller, limits or flame safeguard control is open:

1. Make sure the valve is wired in the correct circuit.2. Open the master switch to remove power from the

valve.3. If the valve closes now, check the wiring for the valve

and correct the wiring as necessary.4. Check for a short in the electrical circuit and repair it as

necessary.

SERVICE INFORMATION

WARNINGExplosion Hazard and Electrical Shock Hazard.Can cause explosion, serious injury or death.Turn off gas supply and disconnect all electrical power to the valve before servicing.

IMPORTANTOnly trained, experienced flame safeguard control technicians should attempt to service or repair flame safeguard controls and burner assemblies.

Scheduled Inspection and MaintenanceSet up and follow a schedule for periodic inspection and maintenance, including the burner, all other controls and the valves. It is recommended that the valve leak test in the Checkout section be included in this schedule. Refer to the instructions for the primary safety control(s) for more inspection and maintenance information.

M9547F

GASSUPPLY

UPSTREAMMANUALGAS COCK

DOWNSTREAMMANUALGAS COCK

BURNER

DA B C E

F

PRV

MANUALTESTPETCOCK

SSOV

1/4 IN. (6 MM) FLEXIBLETUBING

1/4 IN. (6 MM)ALUMINUM OR COPPER PILOT TUBING JAR OR GLASS

WITH WATER

CUT AT45 DEGREEANGLE

CAN ALSO BE A PERMANENT PETCOCK.

PRV = PRESSURE REGULATING VALVE.

SSOV = SAFETY SHUTOFF VALVE.

USE THE DOWNSTREAM TAP ON THE SS0V.

1

2

3

4

4

2 3

1

12

(13 MM)

LEAK TEST TAP

11 65-02703

65-02703 G.R. Rev. 11-04 www.honeywell.com

Automation and Control Solutions Honeywell International Honeywell Europe S.A. Honeywell Latin American Honeywell International Inc. Honeywell Limited-Honeywell Limitée Control Products 3 Avenue du Bourget Region1985 Douglas Drive North 35 Dynamic Drive Honeywell Building 1140 Brussels 480 Sawgrass Corporate ParkwayGolden Valley, MN 55422 Scarborough, Ontario 17 Changi Business Park Central 1 Belgium Suite 200

M1V 4Z9 Singapore 486073 Sunrise FL 33325

ApplicationFeaturesSpecificationsInstallationWhen Installing this Product…Mounting PositionMounting locationsMain Gas ConnectionElectrical Connections

Adjustments and Final CheckoutPressure Tap Points (Fig. 7)Second Valve, Fast Opening (V4730A/V8730A)Second Valve, Slow Opening (V4750A/V8750A)Opening Speed AdjustmentFinal Checkout of the Installation

OperationValve Leak Test (Fig. 17)After the Test

TroubleshootingTroubleshooting Procedure

Service InformationScheduled Inspection and Maintenance

Documents

65-0270 V4730A/V8730A, V4750A/V8750A Double Block Safety … · Torsion and Bending Stress: Pipe connections meet EN161, Group 2, requirements. Electrical Equipment: Dc coils with