Siemens VXP45 Series Manual del propietario

Siemens Building Technologies, Inc.

Technical Instruction

Document No. CM1N4845E-P2

Rev. 4, February, 200

VVP45… and VXP45… Series

Two-port and Three-port Seat Valves

ANSI Class 250 Short-stroke Valves

Two-port Seat Valve

VVP45…

Three-port Seat Valve

VXP45…

Description Two-port seat valves of the VVP45… range with two-port connection

Three-port seat valves of the VXP45… range with three-port connection

Features • Nominal pressure, ANSI Class 250

• Bronze valve body

• 1/2-inch, 3/4-inch and 1-inch diameters

• Externally threaded connections G 1/2-inch, G 3/4-inch and G 1-inch

• Nominal stroke 5.5 mm

• Manual adjusting knob

• Can be fitted with SSB… or SSC… electric actuators

Application • In ventilating and air conditioning applications to control, for water side, terminal

units in closed circuits, such as induction and fan coil units, small unit heaters and

small water-cooled units. For use in:

− Two-pipe systems with one heat exchanger for heating and cooling

− Four-pipe systems with two separate heat exchangers for heating and cooling

• In heating applications to control heating zones in closed circuits, such as:

− Self-contained heating systems

− Apartments

− Individual rooms

Product Numbers See Table 1.

Technical Instructions VVP45… and VXP45... Series Two-port and Three-port Seat Valves

Document Number CM1N4845E-P25 ANSI Class 250

Rev. 4, February, 2002

Page 2 Siemens Building Technologies, Inc.

Fluids Hot water: to maximum 230°F (110°C), short-term to maximum 248°F (120°C)

Chilled water: over 36°F (2°C)

Water-glycol solutions

Operating Pressure Maximum 1600 kPa (16 bar) and ANSI Class 250

Table 1. Product Numbers.

Actuator

Positioning

Force

Line Size

(inch)

Connectio

ISO Thread

GPM

Straight

through

VVP45…

(2-port) ∆ps

(ps

GPM

Bypass VXP45…

(3-port) ∆pmax

psi

45lb

67 lb

1.1 VVP45.10-0.25

0.79 VXP45.10-0.25

SSB

SSC

1.8 VVP45.10-0.4

1.23 VXP45.10-0.4

2.8 VVP45.10-0.63

1.90 VXP45.10-0.63

4.4 VVP45.10-1 3.08 VXP45.10-1

10 (.394)

G 1/2-inch

7.0 VVP45.10-1.6

4.93 VXP45.10-1.6

15 (.5906

)

G 3/4-inch

11.0 VVP45.15-2.5

7.71 VXP45.15-2.5

20 (.7874

)

G 1-inch 17.6 VVP45.20-4 58

12.33 VXP45.20-4

∆p = >29 psi increases risk of noise and seat-plug erosion

∆ps=

Close-off pressure

∆pmax = Maximum permissible differential pressure across closed valve with actuator

Cv = Nominal flow at pressure drop of 1 psi

Ordering When ordering, give quantity, product number and name of valve.

Example: 1 VXP45.10-1 three-port valve

Valves, actuators and screwed fittings are packed separately.

Equipment

Combinations Valves V…45.10-0.25 to V…45.25-6.3 are operated with SSB actuators (see data shee

CA1N4891.1E-P25 and CA1N4891.2E-P25) or SSC actuators. Valves V…P45.25-10,

V…45.32-16 and V…P45.40-25 are only operated with SSC actuators.

Actuator

Operating

Voltage Control Run Time

(Seconds

)

Positioning

Force GPM

SSB61...

24 Vac 0 to 10 Vdc

75 45 lbf 27.7

SSB81...

3-Point 150

SSC61...

0 to 10 Vdc

30 67 lbf 110

SSC81...

3-Point 150

VVVP445…and VXP45… Series Two-port and Three-port Seat Valves Technical Instructions

ANSI Class 250 Document Number CM1N4845E-P25

Rev. 4, February, 2002

Siemens Building Technologies, Inc. Page 3

Sizing

Water Sizing Equation:

v∆

Where:

Cv= Flow Coefficient

Q = Volumetric flow rate (gpm)

∆p = Pressure drop, psi

Warning/Caution

Notations

WARNING:

Personal injury, or loss of life may

occur if you do not follow the

procedures as specified.

CAUTION:

Equipment damage, or loss of data

may occur if you do not follow the

procedures as specified.

Control

Characteristics

0,8

0,6

0,4

0,2

000,20,40,60,81

100

BAB

ABA

SVAL0067R1

Legend:

V100 = Volumetric flow rate

H0 = Valve stroke 0% = Path A →AB closed,

bypass B opened

H100 = Valve stroke 100% = Path A →AB opened,

bypass B closed

Tor AB = Constant total flow from A and B →AB

Tor A = Variable flow in straight-through path

from A →AB

Tor B = Variable flow in bypass-through port

from B →AB

CAUTION:

The VXP45…can only be used as mixing valves.

Engineering Notes

Recommendation

Valves VVP45… and VXP45… are preferably installed in the return, as this provides

lower temperatures on the seals.

Provide strainer upstream of the valve inlet.

AB A

SVAL0069R1

Figure 1. VVP45.

Two-port valves VVP45…

Flow permissible only in direction

of arrow from A →AB arrow on

valve body.

AB = Variable flow in straight-

through port (outlet).

A = Variable flow in straight-

through port (inlet).

Stem retracted: Path A →AB

open.

Stem extended: Path A →AB

closed.

Technical Instructions VVP45… and VXP45... Series Two-port and Three-port Seat Valves

Document Number CM1N4845E-P25 ANSI Class 250

Rev. 4, February, 2002

Page 4 Siemens Building Technologies, Inc.

Engineering Notes

Recommendation,

Continued

AB A

SVAL0070R1

Figure 2. VXP45.

Three-port valves VXP45…

Use as mixing valves only.

Mixing: flow from A

and B →AB.

AB = Constant total flow

(outlet).

A= Variable flow

→AB (inlet A).

B= Variable flow B

→AB

in bypass (inlet B.)

Stem retracted: Path A →AB

open, bypass B closed.

Stem extended: Path A →AB

closed, bypass B open.

Also see Mounting Notes and Commissioning Notes.

Mounting Notes

SVAL0072R1

Permitted Not Permitted

Figure 3. Mounting Positions.

See Engineering Notes for flow direction.

The valves are always supplied in a common package with installation instructions.

The valves are automatically closed by a return spring. The straight-through port

A →AB of the valve is opened by adjusting the manual knob or actuator; with three-

port valves, bypass B is throttled or closed. The manual adjusting knob only permits

opening to 70% (bypass 30% open)

Commissioning

Notes

Manual Adjustment

Two-port valves VVP45…

Spindle retracts: throughport from A →AB opens

Valve spindle extends: throughport from A →AB closes.

Three-port valves VXP45…

Spindle retracts: throughport A →AB opens, bypass B closes

Valve spindle extends: throughport A →AB closes, bypass B opens.

WARNING:

Before performing any service work on the valve and/or actuator, do the

following:

1. Switch OFF pump and power supply.

2. Close the main shutoff valve of the piping system.

3. Release pressure and allow to cool down completely.

4. Disconnect electrical connections, if necessary, from terminals. Only

commission the valve using the preset manual adjusting knob or with

an actuator mounted in accordance with the relevant instructions.

VVVP445…and VXP45… Series Two-port and Three-port Seat Valves Technical Instructions

ANSI Class 250 Document Number CM1N4845E-P25

Rev. 4, February, 2002

Siemens Building Technologies, Inc. Page 5

Specifications

Characteristics

Throughport A →AB ngl = 2.2

(equal percentage, optimized for large

controllable range)

Bypass B linear

Leakage rate Throughport A →AB 0 to 0.01% of Cvs-value

Bypass B 0 to 0.01% of Cvs-value

Rangeability See

Product Numbers

Threaded connections Valve ISO 228/1

Fitting ISO 7/1

Pressure class ANSI Class 250

Nominal stroke 0.2 inch (5.5 mm)

Valve materials Body Bronze

Spindle Stainless steel

Plug, seat, gland Brass

O-rings Special EPDM rubber

Weight See

Dimensions

Technical Instructions VVP45… and VXP45... Series Two-port and Three-port Seat Valves

Document Number CM1N4845E-P25 ANSI Class 250

Rev. 4, February, 2002

Information in this publication is based on current specifications. The company reserves the right to make changes in specifications and models as

design improvements are introduced. Other product or company names mentioned herein may be the trademarks of their respective owners.

Siemens Building Technologies, Inc.

1000 Deerfield Parkway

Buffalo Grove, IL 60089-4513

U.S.A.

Your feedback is important to us. If you have

comments about this document, please send

them to t[email protected]emens.com

Document No. CM1N4845E-P25

Printed in the U.S.A

Page 6

Dimensions

All dimensions in

inches (millimeters)

Hmin

AB A

SVAL0073R1

Figure 4. VVP45…

(2-port).

L2 L1

Hmin

AB A

SVAL0074R1

Figure 5. VXP45…

(3-port).

Table 2.

Two-port Seat Valves VVP45…

D Product

Number B H Hmin

H1 H3 L1

L2 L3

G 1/2"

VVP45.10-

0.25…1.6 1.14

(29)

8.07

(205)

4.92

(125

)

1.77

(44.9)

≈2.13

(54) 2.36

(60)

1.18

(30) —

G 3/4"

VVP45.15-2.5

1.22

(31)

2.56

(65)

1.28

(32.5)

G 1" VVP45.20-4 1.42

(36)

8.27

(210)

5.12

(130

)

1.92

(48.9)

≈2.28

(58) 3.15

(80)

1.57

(40) —

Three-port Seat Valves VXP45...

G 1/2"

VXP45.10-

0.25…1.6 1.14

(29)

8.07

(205)

4.92

(125

)

1.77

(44.9)

≈2.13

(54) 2.36

(60)

1.18

(30) 1.18

(32.5)

G 3/4"

VXP45.15-2.5

1.22

(31)

2.56

(65)

1.28

(32.5)

1.28

(32.5)

G 1" VXP45.20-4 1.42

(36)

8.27

(210)

5.12

(130

)

1.92

(48.9)

≈2.28

(58) 3.15

(80)

1.57

(40) 1.57

(40)

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