Honeywell VP522A Скачать руководство пользователя страница 3 | Manualshive

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Honeywell VP522A Скачать руководство пользователя страница 3

B SEQUENCING WATER VALVE

Nominal Body Rating:

250 psi (1724

Water Temperature Limits:

35F (2C) min to 250F (121 C) max

Packing:

Rubber V-ring, spring loaded, self adjusting

Seats:

Brass, upper seat removable, lower seat integral

Plugs:

Brass

Disc:

Molded-in composition

Operator Diaphragm:

Molded neoprene, rolling type

Operator Maximum Safe Air Pressure:

25 psi (172

Air Connections:

Combination barb fitting for

and

(4 mm

and 6 mm) 0. D. plastic tubing

MAINTENANCE

Equipment Required

Commercial cleaning solvent degreaser

0 to 30 psi (0 to 107

pressure gage

Cleaning

Remove all dirt and grease accumulation from the underside
of the actuator and around the packing nut and stem. Use
soivent if necessary.

A

WARNING

Use solvents in a well ventilated area. Avoid
prolonged inhalation of solvents or contact with the
skin. Careless handling of solvents can cause
permanent injury to the respiratory system and skin
tissue.

CAUTION

Do not allow solvent to come into contact with the
diaphragm as it will cause serious damage.

Adjust the system temperature controller through its
control range. The valve should operate to control the
flow of water as required to provide heating or cooling
(when both hot and chilled water are available).
Make sure the branchline pressure builds up to near full
main pressure when controller is set at the extreme end
of the throttling range. With the temperature controller

set at either extreme setting, full flow should occur.
There should be no flow at mid-pressure (see Table 1).

Adjustment

Make the following adjustments after repairing the
or

Vary the branchline pressure to the inlet port on the

Note the pressure range at which no

movement (dwell) occurs.
Repeat above procedure for the
Use a screwdriver or spring adjustment wrench to

adjust the tension of the spring on the

by

turning the spring clockwise to reduce, or counter-
clockwise to increase, the switching point of no
movement. The switching point must be within the

dwell.

Operational Check

If a gage is not already present, insert a 0 to 30 psi (0

to 107

gage in the branch line.

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Содержание VP522A

Страница 1: ...ortioning valve that controls the flow of first hot and then cold water to a fan coil unit as branchline pressure increases and the reverse as branchline pressure decreases No flow occurs at mid pressure See Table 1for operating sequence The VP522B diverts the return water from the coil directly to return piping of the system feeding the coil During the dwell period of the VP522A when both ports a...

Страница 2: ...pens Cold port open 100 Specifications See Table 2 for VP522 model number size capacity index and close off rating Table 2 VP522 Specifications Not available for replacement Use valve with different nominal pipe size and same capacity index T Not available for replacement Use valve with different capacity index 5 Rating will maintain closure against 15 psi 103 kPa difference in return line pressur...

Страница 3: ...ome into contact with the diaphragm as it will cause serious damage 0 0 Adjust the system temperature controller through its control range The valve should operate to control the flow of water as required to provide heating or cooling when both hot and chilled water are available Make sure the branchline pressure builds up to near full main pressure when controller is set at the extreme end of the...

Страница 4: ...LACE DIAPHRAGM MAKE OPERATIONAL CHECK I YES CHECK SYSTEM Pr PRESSURES DISASSEMBLE VALVE AND INSPECT FOR FOREIGN MATERIAL OR BLOCKED PORTS CHECK FOR BROKEN PARTS CLEAN AND I REPLACE AS NECESSARY I DISASSEMBLE VALVE REPLACE WORN SEATS AND PLUGS REPLACE VALVE IF LOWER SEAT IS DEFECTIVE 1 YES DISASSEMBLE VALVE INSPECT FOR FOREIGN MATERIAL OR BENT STEM CLEAN OR REPLACE STEM AND LUBRICATE IRESTORE VALVE...

Страница 5: ...followers from packing nut Retain both packing followers Discard old packing Remove packing spring from valve bonnet Clean out packing nut and packing spring with a commercial solvent degreaser AWARNING Use solvents in a well ventilated area Avoid prolonged inhalation of solvents or contact with the skin Careless handling of solvents can cause permanent injury to the respiratory system and skin ti...

Страница 6: ...VP522A and B Parts List See Fig 3 Fig Key No Part No Description 2 3 4 4 5 6 7 a 9 10 10 10 10 11 12 13 14 15 16 17 17 1 8 19 20 21 22 23 23 314456 23 314462 24 See Table 4 Stem and Disc Holder Assembly 25 Valve Body 312760 309 zlo4 313816 00063 314436 00065 315412 315413 314460 315409 310143 310137 310135 313825 Screw 8 32 x 1 2 in slot head 4 Lockwasher No 4 4 Actuator top Diaphragm 1 Diaphragm ...

Страница 7: ...E ACTUATOR ASSEMBLY 312817L ALL A MODELS EXCEPT Al 039 A1047 AND Al237 312817S FOR A1039 A1047 AND Al237 MODELa 312817W FOR 81003 MODELS 312817Y FOR B1011 AND B1029 MODELS X2053 1 Fig 3 VP522A and B Exploded View SeeTable 3 75 2598 ...

Страница 8: ...me and Building Control Honeywell Inc Honeywell Limited Honeywell Limitee Honeywell Plaza 740 Ellesmere Road P O Box 524 Scarborough Ontario Minneapolis MN 55408 0524 MlP 2V9 Helping You Control Your World 75 2598 Rev 6 92 Printed in U S A ...

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