Honeywell VC User Manual

VC series

BALANCED HYDRONIC VALVES 2--WAY AND 3--WAY

PRODUCT HANDBOOK

APPLICATION

The VC series balanced hydronic valves allow greater control of hot and/or cold water flow. The VC series balanced hydronic valves are designed for both domestic boiler heating and domestic cooling applications.

Subject to change without notice. Printed in the Netherlands.

Contents

General page

Description 2 Series overview 3

Technical

Construction and operation 4 Specifications 6 Dimensions 8 Valve selection chart 9

Installation and operation

Installation data 10 Adjustment and service data 12

Various

Quality assurance statement 13 Approvals and standards 14 Ordering information 15 Standard product examples 16 Fitting for 1/2” and 15 mm valves Fitting for 3/4” and 22 mm valves 19

Fitting for 1” and 28 mm valves 20 Accessories 21

EN2R--9011 0108R2--NE

DESCRIPTION

The VC series 2--position hydronic valves are used in domestic and small commercial applications to control the flow of hot and/or cold water. They consist of an actuator, valve and a cartridge assembly.

2--way valves are designed for ON --OFF ”zone” control of domestic systems.

3--way valves can be piped for either diverting or mixing valve applications in domestic central heating and/or cooling systems. Both versions can be used to control individual fan coil, baseboard radiator or convector applications.

Depending on the model selected they can be controlled by a

low or line voltage SPST such as a room thermostat, aquastat or flow switch.

or SPDT controller,

The VC series hydronic valves are designed to take avantage of sinusoidal valve actuator travel and therefore operate silently and without water hammer. Through internal logic the actuator only takes power while driving the valve to the commanded position.

The actuator head is removable without affecting the integrity of the water system. All actuator versions are interchangeable with any valve body, offering the highest flexibility for boiler production line assembly and maintenance.

The valve piston construction allows for port sealing that is independent of the differential pressure across the valve.

Flow through the 2--way valve can be in either direction, so the ports are not designated.

3--way valves are suitable for both diverting water from AB to A or to B and from A or B to AB.

EN2R--9011 0108R2--NE

FEATURES

 2--way or 3--way body  Wide variety of pipe c onnections including:

ISO 7--1 (BSP. Pl) BSP.T NPT Sweat Compression Flare

 Control by a low or line voltage SPST or SPDT control  24 Vac, 100 ... 130 Vac or 200 ... 240 Vac actuators

available

 SPDT auxiliary switch available  Quick connect electrical connections or 1000 mm leads  Minimal actuator power consumption  Double insulated actuator  Pressure differential up to 4 bar  1 ... 95 _C fluid temperature  0 ... 65 _C ambient temperature  Quick and easy replacement of moving parts  Actuator head installation does not require draining of the

system.

EN2R--9011 0108R2--NE

CONSTRUCTION AND OPERATION

All moving and sealing parts of the valve are constructed in the cartridge assembly.

The ports are sealed with ”O”-- rings on the outer surface of the piston.

When the valve stem is driven down to open port A the water will flow through the hollow piston to the other port.

In case of a 3--way valve with the piston driven down port B is sealed, allowing flow between port AB and port A. With the stem up the flow is between port AB and port B.

The VC series hydronic valves offer a variety of versions of pipe connections to suit the different applications.

The valve pressure loss characteristic is dependent on the pipe connection/dimensions

For the actual valve rating please refer to the specification section.

Fig. 1.

Fig. 2.

2- way valve

When the valve reaches the fully open position the cam closes switch SW When the need for heat is satified, the controller contacts

and opens the switch SW2.

open, RLY1 is de-- energized and the valve motor driven through SW

and the NC contacts of SW3.

When the valve reaches fully closed position, the cam closes SW

and opens SW1. The valve is ready for the next call for

heat.

For both types of actuator a power failure will leave the valve at the position it was interrupted. When power is restored, the valve will respond to controller demand.

3- way diverter valve

3- way diverter valve with an SPDT (3- wire) actuator

On a call for heat, the NO controller contacts close, the valve closes port B and opens port A. When port A is in the fully open position, the cam closes limit switch SW When the need for heat is satisfied the NC controller contacts close, energizing the valve through SW close. When port A is fully closed the cam closes SW SW

3- way diverter valve with an SPST (2- wire and common) actuator

On a call for heat, the controller contacts close, RLY energized making the NO contacts in switch SW port B to close and port A to open. When port A reaches the fully open position the cam closes switch SW When the need for heat is satified, the controller contacts open. RLY and port A is driven closed through SW1 and the NC contacts of SW When port A is in the fully closed position, the cam closes SW

heat.

For both types of actuator a power failure will leave the valve at the position it was when interrupted. When power is restored, the valve will respond to controller demand.

and opens limit switch SW2.

causing port A to

and opens

. The valve is ready for the next call for heat.

causing

and opens the switch SW2.

is de--energized making the NC contacts in SW

and opens SW1. The valve is ready for the next call for

2- way valve with an SPDT (3- w ire) actuator

On a call for heat, the NO controller contacts close and the valve opens. When the valve is fully open, the cam closes switch SW

and opens switch SW2.

When the need for heat is satisfied the NC controller contacts close, energizing the valve through SW

and closing the

valve. When the valve is fully closed the cam closes SW SW

. The valve is ready for the next call for heat.

and opens

2- way valve with an SPST (2- wire and common) actuator

On a call for heat, the controller contacts close, RLY1is energized making the NO contacts in switch SW

causing the

valve to open.

Wiring

Fig. 3. and 4. show wiring connections for SPDT and SPST controllers on either 2-- way valves or 3--way valves. Port A ”open” and ”closed” denotes valve open and closed for 2-- way, and AB-- B open and AB--B open for 3--way valves respectively. Ona2--wayvalve:

Port A open denotes valve open

Ona3--wayvalve:

Port A open denotes flow through AB--A Port A closed denotes flow through AB-- B

For mixed low/line voltage, the cable assembly version recommended.

EN2R--9011 0108R2-- NE

Fig. 3. Logic sequence diagram with 3 wire actuator for SPDT controller

Fig. 4. Logic sequence diagram with 2 wire + common actuator for SPST controller

EN2R--9011 0108R2-- NE

SPECIFICATIONS

ext

ernally

threaded

E--externallythreade

Volt a g e Colour-- coded label

24 V, 50/60 Hz Blue

100 ... 130 V, 50/60 Hz Black

200 ... 240 V, 50/60 Hz Red

Power consumption

6 Watt maximum at nominal voltages (during valve position change only) 6 VA for transformer and wiring Maximum power time: 15%

Endswitchrating

2.2 A inductive from 5 ... 120 Vac

1.0 A inductive above 120 ... 277 Vac Minimum dc switching capbility: 0.05A 24 Vdc

Nominal timing

Valve opens in 6 seconds @ 60 Hz (20% longer @ 50 Hz)

Table1.Pipefittingsizes

Pipe fitting sizes

Flare E E -- -- -- -- --

Inverted flare -- I -- -- -- -- --

Sweat -- N N N -- -- --

BSPP -- I E, I E, I -- -- --

BSPT -- I I -- -- -- --

NPT -- -- I I -- -- --

Compression fitting -- -- -- -- I E E

3/8” 1/2” 3/4” 1” 15 mm 22 mm 28 mm Note: N -- not threaded

Electrical termination

 Molex

 With integral 1000 mm (39”) leadwire cable

Pipe fitting sizes

Seetable1.

Requires mating connector receptacle/housing # 39-- 01 --2060 Contacts: Mini--Fit 5556 series

Fig. 5. 3--way valve diverting flow characteristic at

(header# 39--30--1060)

constant pressure on port AB

I -- internally threaded E--

Terminal Action Wire colour

1Com* Orange 2 Neutral Blue 3Closed** Brown 4NO* Grey 5NC* White 6 Open** Black

* Terminals 1, 4 and 5 are only

connected if an auxiliary switch is used. NO, NC refers to port A closed position

** Refers to port A (closed or open)

NOTE: For mixed voltages (low/line voltage)

thecableassemblyversionis recommended

Fig. 6. Wiring terminal colour coding

MolexTMversion

Lead wire cable

EN2R--9011 0108R2-- NE

Actuator type

3-- wire (for SPDT controller)

2--wire + common (for SPST controller)

Table 2. Wiring connections and valve movements

Connections 2-- way valve

Cable model MolexTMmodel

Blue & brown energized Black de--energized

Blue & black energized Brown de--energized

Blue & brown energized Brown and black open

Blue & brown energized Brown and black closed

Pin #2 & 3 energized Pin #6 de --energized

Pin #2 & 6 energized Pin #3 de --energized

Pin #2 & 3 energized Pin #3 and 6 open

Pin #2 & 3 energized Pin#3and6closed

movement movement

Closes A port closes

Opens B port closes

Closes A port closes

Opens B port closes

3-- way valve

Ambient temperature

0 ... 65 _C

Fluid temperature

1 ... 95 _C (120 _C short duration peak)

Shipping storage temperature

--40 ... 65 _C

Pressure rating

Static: 20 bar Burst: 100 bar

Maximum operating pressure differential

4 bar

Flow rating

Dependent upon body configuration (see fig. 5., 7. and 8.)

/h to be calculated as:



p(bar)



Flow rate Q m

Q = Kv × ∆

Pressure loss αp(bar)tobecalculatedas:



∆p =

Flow

2-way

Flow can be in either direction Valve is closed without the actuator mounted

3-way

Flow can be diverting (AB to A or B) or mixing (A or B to AB). Port A is closed without the actuator mounted

Kv 6,0

Flow rate (m

Kv 5,0

Kv 5,3

Kv 2,1

Kv 3,0

0,1

0,001 0,01 0,1

bar

0,1 1 10kPa

Pressure loss

Fig. 7. Valve pressure loss characteristic for 2-- way valves

Kv 7,7

/h)

Kv 6,4

Kv 7,0

Kv 2,6

Flow rate (m

Kv 3,4

Valve material

Body: bronze Cartridge: Ryton

”O”-- ring seals: EPDM rubber Stem: stainless steel Actuator cover: Noryl Actuator base: Ryton

Noryl

(polyphenylene sulphide)

(polyphenylene oxide)

(94V--0)

0,1

bar

0,001 0,01 0,1

kPa

0,1 1 10

Pressure loss

Fig. 8. Valve pressure loss characteristic for 3-- way valves

EN2R--9011 0108R2-- NE

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