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V48A,F,J; V88A,J DIAPHRAGM GAS VALVES

60-2080—9

For normal installations, use moisture-resistant No. 14

wire suitable for at least 167°F (75°C) if using a flame

safeguard primary control, or for at least 194°F (90°C) if

using a flame safeguard programming control.

For high temperature installation, use moisture-resistant

No. 14 wire selected for a temperature rating above the

maximum operating temperature.

Check the power supply circuit. The voltage and

frequency must match those of the valve.

Refer to Fig. 5 or 6 for typical field wiring connections.

Follow the burner manufacturers wiring diagram if

provided.

Make wiring connections inside the actuator housing

(Fig. 7):

a. Loosen the cover screw in the front of the actuator

housing, and remove the housing cover.

b. If a conduit is required, run the conduit through the

opening in the actuator housing, and run the

external wires through the conduit.

c. Using solderless connectors, connect the external

wires to the two 6 in. (152.4 mm) black leadwires

(from the coil).

d. Locate the connections inside the actuator housing.

e. Replace the housing cover, and tighten the cover

screw holding it to the actuator housing.

Recheck the wiring circuits before putting the valve into

service.

Fig. 5. Typical wiring diagram for V48.

Installation of an Optional Adjustable Bleed

Valve (Fig. 8).

NOTE: This device is not available for valves with BSP.PI

threads.

Screw the 126590 Adjustable Bleed Valve into the tapping

marked BLEED. Be sure to screw the end with the

1/8-NPT

threads

into the BLEED tapping. Complete the bleed line

connection. Then alternately energize and de-energize the

valve actuator, and adjust the screw on the bleed valve for the

desired valve opening time.

Fig. 6. Typical wiring diagram for V88.

Fig. 7. Making wiring connections.

Installation of an Optional Bleed Orifice

(Fig. 9)

NOTE: The orifice tool cannot be used on valves with

BSP.PI threads.

Press the selected bleed orifice (see Table 2) over the 1/8 in.

diameter dowel and press until the orifice cup bottoms in the

bleed port. Complete the connection of the bleed tubing.

M8490A

VALVE ACTUATOR

(BLACK LEAD WIRES)

FLAME

SAFEGUARD

CONTROL

(HOT)

1 POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD

PROTECTION AS REQUIRED.

LIMIT(S)

LINE VOLTAGE

THERMOSTAT OR

CONTROLLER

M8488A

LIMIT(S)

V88

VALVE ACTUATOR

(BLACK LEAD WIRES)

24 VOLT

THERMOSTAT

24V

FLAME

SAFEGUARD

CONTROL

TRANSFORMER

(HOT)

1 POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD

PROTECTION AS REQUIRED.

M7302

6 IN. [152.4 MM] INTERNAL

BLACK LEADWIRES

(FROM COIL)

SOLDERLESS

CONNECTORS

GROUNDING

SCREW

EXTERNAL

WIRES

ACTUATOR

HOUSING

OPENING IN

ACTUATOR

HOUSING

CONDUIT

(IF REQUIRED)

COVER

SCREW

Содержание V48A

Страница 1: ...mum closing time V48J V88J rated for 150 F 66 C ambient temperature V48F rated for 5 psi lb per sq in 34 5 kPa V48A and V88A rated for either 1 2 or 1 psi 3 4 or 6 9 kPa depending on model V48J and V88J rated for 1 psi 6 9 kPa One model for natural and LP gases Wide range of sizes and capacities Firm closing diaphragm is both weight and spring loaded Valve closes on power failure recommended for f...

Страница 2: ...Body Material Die cast aluminum Pilot Tapping see Table 1 for thread type 3 4 through 1 1 2 inch valves 1 8 27 NPT or 1 8 28 BSP PI 2 through 3 inch valves 1 4 18 NPT Bleed Tapping see Table 2 for thread type 1 8 27 NPT or 1 8 28 BSP PI Valve Opening Time Five seconds maximum at 2 oz in 2 0 86 kPa pressure Adjustable bleed valve assembly or fixed bleed orifices available for longer opening time NP...

Страница 3: ... 1 1 2 2 110V 50 Hz V88A 24V 60 Hz 1 2 3 4 3 4 1 1 1 4 1 1 2 1 6 9 3 4 1 1 1 4 1 1 2 2 2 1 2 3 V88J 24V 60 Hz 6 9 1 1 1 4 Valve Size in Valve Opening Time seconds No Orifice Orifice No 122160 0 018 in 0 46 mm Orifice No 124674 0 011 in 0 28 mm 1 1 2 3 1 1 4 1 5 6 1 1 2 1 5 6 2 4 15 32 2 1 2 4 23 37 3 5 24 37 1 2 1 2 BLEED TAPPING 1 8 27 NPT OR 1 8 28 BSP PL PILOT TAPING 2 1 8 27 NPT FOR 3 4 THROUG...

Страница 4: ...he same size as the first valve INSTALLATION When Installing This Product 1 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 Installer must be a trained experienced flame safeguard control technician 4 After ins...

Страница 5: ...se this may result in gas leakage at the connection 2 Unscrew brass compression fitting from pilot gas tapping Fig 4 Slip the fitting over the tubing and slide out of the way PRESSURE DROP VS CAPACITY FOR 0 64 SP GR GAS A G A RATING FOR 0 64 SP GR GAS AT 1 IN PRESSURE DROP VALVE SIZE CAPACITY 3 4 IN 1 IN 1 1 4 IN 1 1 2 IN 2 IN 2 1 2 IN 3 IN 668 cf h 1021 cf h 2100 cf h 2400 cf h 4178 cf h 5100 cf ...

Страница 6: ...nd of bleed tubing to main burner or to outside atmosphere WIRING 1 Disconnect the power supply before making wiring connections to prevent electrical shock and equipment damage Fig 4 Connecting tubing to pilot for bleed gas tapping 2 All wiring must comply with applicable electrical codes ordinances and regulations Use NEC Class 1 line voltage wiring WRONG WRONG WRONG RIGHT 2 CLEAN THREADS MODERA...

Страница 7: ...ice Fig 5 Typical wiring diagram for V48 Installation of an Optional Adjustable Bleed Valve Fig 8 NOTE This device is not available for valves with BSP PI threads Screw the 126590 Adjustable Bleed Valve into the tapping marked BLEED Be sure to screw the end with the 1 8 NPT threads into the BLEED tapping Complete the bleed line connection Then alternately energize and de energize the valve actuato...

Страница 8: ...nd V88 diaphragm gas valves On a call for heat the controller contacts close and the coil is energized This pulls the plunger to the UP position opening the bleed port and closing the supply port The gas in the top BLEED TAPPING 126590 ADJUSTABLE BLEED VALVE SLEEVE COMPRESSION NUT 1 4 INCH TUBING 7 16 24 UNS ADJUSTING SCREW 7 16 INCH HEX 1 8 27 NPT M7290 BLEED PORT 1 8 27 NPT M7298A 1 8 INCH DIAME...

Страница 9: ...ge Do not allow fuel to accumulate in the combustion chamber If fuel is allowed to enter the chamber for longer than a few seconds without igniting an explosive mixture could result CAUTION Equipment Damage Hazard Can cause equipment damage and improper operation 1 Do not put the system into service until you have satisfactorily completed all applicable tests described in the Checkout section of t...

Страница 10: ...ard control for more information Replacing the coil assembly Figs 12 through 15 1 Open the master switch to disconnect all power to the valve actuator 2 Loosen the cover screw in the front of the actuator housing Fig 12 and remove the housing cover 3 Disconnect the external wires from the two internal black leadwires Fig 12 4 Remove the two torx screws inside the actuator housing Fig 13 and lift o...

Страница 11: ...cycle the valve several times with the manual fuel shutoff cock closed Make sure the valve and actuator function properly Also perform the Valve Leak Test that follows before putting the valve into service Valve Leak Test Fig 7 This is a test for checking the closure tightness of a gas safety shutoff valve It should be performed by qualified personnel during the initial startup of a burner system ...

Страница 12: ...xceed the values listed in Table 5 Table 5 Allowable Leakage for V48 V88 Valves a Natural gas multiply air by 1 25 b Bubble leakage Divide natural gas by 573 then multiply by 14 NOTE For international leak test requirements contact the office of the appropriate approval agency After the test 11 Close the upstream manual gas cock A 12 Close the test petcock F remove the test apparatus and replace t...

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