Honeywell VP522A Quick Start Manual Download Page 6 | Manualshive

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Honeywell VP522A Quick Start Manual Download Page 6

B SEQUENCING WATER VALVE

To assure correct stem stroke, tighten the valve bonnet
and pull up on the stem to take up the free travel of
approximately 1/16-in. With the stem raised (no free
travel), adjust the stem button so that the distance from
the top of the stem button to the top of the valve bonnet
is 3-15/1 6 in. (100 mm) for the VP522A, or 4-1/1 6 in.

(103

mm) for the VP522B.

Table 4. Stem and Disc Holder Rebuild Kit*.

0-S.

No.

Part No.

VP522A1005
VP522A1039
VP522A1047
VP522A1070
VP522A1088

VP522A1 096
VP522A1237
VP522B1003
VP522B1011

VP522B1029

313824A
314459A
3144598
313824C
313824D

313824E
314459c
315407A
3 15408A

315408A

Without moving the stem button on the stem, tighten
the setscrew in the top of the stem button.

Put the actuator assembly back on.
Restore system to operation.

PARTS AND ACCESSORIES

Parts List

* Also includes stem button and set

screw, packing, and instructions.

See Figure 3 and Tables 3 and 4 for available VP522
replacement parts.

Table 3. 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
18
19

20
21
22
23

23 314456

23 314462

24 See Table 4 Stem and Disc Holder Assembly
25

Valve Body

312760

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
Diaphragm for Series 1 Valves
Diaphragm Cup and Support Assembly

Spider
Star Spring
Slide
Spring Plate
Spring for all A models except

A1039 and A1047

Spring for A1039 and A1047 models
Spring for B101 1 and B1029 models
Spring for B1003 model
Spring Retainer
Spider Base
Screw-1/4-20 x 3/8 in. socket head
Screw-1/4-20 x 3/4 in. filister head
Screw-1/4 x 1/4 in. socket head
Stem Button
Brass Tube for A models
Brass Tube for B models
Packing Nut
Packing Discs (3)-cup down
Packing Follower (2)-bevel up
Packing Spring

Valve Bonnet
Valve Seat for all A models except

A1039, A1237, and A1047; for all
B models except B1 011 and
B1029

Valve Seat for A1039, A1237, and

B1

011

models

Valve Seat for A1047 and B1029

models

Accessories

No accessories are available for the VP522A or B.

75-2598

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Summary of Contents for VP522A

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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 ...

Page 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 ...

Page 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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