Honeywell VC User Manual
Subject to change without notice. Printed in the Netherlands.
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.
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Contents |
General |
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Description |
2 |
Series overview |
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Technical |
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Construction and operation |
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Specifications |
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Dimensions |
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Valve selection chart |
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Installation and operation |
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Installation data |
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Adjustment and service data |
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Various |
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Quality assurance statement |
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Approvals and standards |
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Ordering information |
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Standard product examples |
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Fitting for 1/2” and 15 mm valves |
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Fitting for 3/4” and 22 mm valves |
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Fitting for 1” and 28 mm valves |
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Accessories |
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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 
or SPDT
controller, such as a room thermostat, aquastat or flow switch.
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.
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EN2R--9011 0108R2--NE |
FEATURES
2--way or 3--way body
Wide variety of pipe connections 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.
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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
2- way valve with an SPDT (3- wire) 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 SW1 and opens switch SW2.
When the need for heat is satisfied the NC controller contacts close, energizing the valve through SW1 and closing the valve.
When the valve is fully closed the cam closes SW2 and opens SW1. The valve is ready for the next call for heat.
2- way valve with an SPST (2- wire and common) actuator
On a call for heat, the controller contacts close, RLY1 is energized making the NO contacts in switch SW3 causing the valve to open.
When the valve reaches the fully open position the cam closes switch SW1 and opens the switch SW2.
When the need for heat is satified, the controller contacts open, RLY1 is de--energized and the valve motor driven through SW1 and the NC contacts of SW3.
When the valve reaches fully closed position, the cam closes SW2 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 SW1 and opens limit switch SW2.
When the need for heat is satisfied the NC controller contacts close, energizing the valve through SW1 causing port A to close.
When port A is fully closed the cam closes SW2 and opens SW1. The valve is ready for the next call for heat.
3- way diverter valve with an SPST (2- wire and common) actuator
On a call for heat, the controller contacts close, RLY1 is energized making the NO contacts in switch SW3, causing port B to close and port A to open.
When port A reaches the fully open position the cam closes switch SW1 and opens the switch SW2.
When the need for heat is satified, the controller contacts open. RLY1 is de--energized making the NC contacts in SW3 and port A is driven closed through SW1 and the NC contacts
of SW3.
When port A is in the fully closed position, the cam closes SW2 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 when interrupted.
When power is restored, the valve will respond to controller demand.
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.
On a 2--way valve:
Port A open denotes valve open On a 3--way valve:
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.
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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
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EN2R--9011 0108R2--NE |
SPECIFICATIONS
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Electrical termination |
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Voltage |
Colour-coded label |
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MolexTM (header# 39--30--1060) |
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24 V, 50/60 Hz |
Blue |
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Requires mating connector receptacle/housing |
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# 39--01--2060 |
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100 ... 130 V, 50/60 Hz |
Black |
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Contacts: Mini--Fit 5556 series |
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200 ... 240 V, 50/60 Hz |
Red |
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With integral 1000 mm (39”) leadwire cable |
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Pipe fitting sizes |
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Power consumption |
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See table 1. |
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6 Watt maximum at nominal voltages (during valve position change only)
6 VA for transformer and wiring Maximum power time: 15%
End switch rating
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)
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Fig. 5. 3-way valve diverting flow characteristic at |
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constant pressure on port AB |
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Table 1. Pipe fitting sizes |
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Pipe fitting sizes |
3/8” |
1/2” |
3/4” |
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1” |
15 mm |
22 mm |
28 mm |
Note: N -- not threaded |
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I -- internally threaded |
Flare |
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E |
E |
-- |
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-- |
-- |
-- |
-- |
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E -- externally threaded |
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Inverted flare |
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I |
-- |
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-- |
-- |
-- |
-- |
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Sweat |
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-- |
N |
N |
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N |
-- |
-- |
-- |
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BSPP |
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-- |
I |
E, I |
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E, I |
-- |
-- |
-- |
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BSPT |
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-- |
I |
I |
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-- |
-- |
-- |
-- |
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NPT |
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-- |
-- |
I |
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I |
-- |
-- |
-- |
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Compression fitting |
-- |
-- |
-- |
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-- |
I |
E |
E |
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Terminal |
Action |
Wire colour |
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1 |
Com* |
Orange |
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2 |
Neutral |
Blue |
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3 |
Closed** |
Brown |
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4 |
NO* |
Grey |
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5 |
NC* |
White |
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6 |
Open** |
Black |
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*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) |
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the cable assembly version is |
Molex TM version |
Lead wire cable |
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recommended |
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Fig. 6. Wiring terminal colour coding
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EN2R--9011 0108R2--NE |
Table 2. Wiring connections and valve movements
Actuator type |
Connections |
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2-way valve |
3-way valve |
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movement |
movement |
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Cable model |
MolexTM model |
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3--wire |
Blue & brown energized |
Pin #2 & 3 energized |
Closes |
A port closes |
(for SPDT controller) |
Black de--energized |
Pin #6 de --energized |
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Blue & black energized |
Pin #2 & 6 energized |
Opens |
B port closes |
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Brown de--energized |
Pin #3 de --energized |
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2--wire + common |
Blue & brown energized |
Pin #2 & 3 energized |
Closes |
A port closes |
(for SPST controller) |
Brown and black open |
Pin #3 and 6 open |
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Blue & brown energized |
Pin #2 & 3 energized |
Opens |
B port closes |
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Brown and black closed |
Pin #3 and 6 closed |
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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.) Flow rate Q m3/h to be calculated as:
Q = Kv × ∆ p(bar)
Pressure loss αp (bar) to be calculated as: ∆p = KvQ 2
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Kv 6,0 |
3/h) |
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Kv 5,3 |
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(m |
1 |
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rate |
Kv 5,0 |
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Flow |
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Kv 2,1 |
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Kv 3,0 |
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0,1 |
0,01 |
0,1 |
bar 0,001 |
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kPa 0,1 |
1 |
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Pressure loss |
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Fig. 7. Valve pressure loss characteristic for 2-way valves
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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
Valve material
Body: bronze
Cartridge: RytonTM (polyphenylene sulphide) NorylTM (polyphenylene oxide)
”O”--ring seals: EPDM rubber Stem: stainless steel
Actuator cover: NorylTM (94V--0) Actuator base: RytonTM (94V--0)
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Kv 7,7 |
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/h) |
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Kv 7,0 |
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3 |
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(m |
1 |
Kv 6,4 |
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rate |
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Kv 2,6 |
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Flow |
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Kv 3,4 |
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0,1 |
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bar |
0,001 |
0,01 |
0,1 |
kPa |
0,1 |
1 |
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Pressure loss
Fig. 8. Valve pressure loss characteristic for 3-way valves
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EN2R--9011 0108R2--NE |
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