VB6 SERIES 6-WAY CONTROL BALL
VALVES AND ACTUATORS
INSTALLATION INSTRUCTIONS
® U.S. Registered Trademark. All Rights Reserved
Copyright © 2020 Honeywell Inc. Printed in USA
APPLICATION
The VB6 6-Way Control Ball Valves regulates hot and
chilled water with glycol solutions up to 60% in heating,
ventilating, and air conditioning (HVAC) systems.
These valves ship with a direct coupled actuator factory
installed for modulating control. The valve is designed to
be used exclusively with MN7510A2001 actuator.
Application Notes
IMPORTANT: Valve sizing is important for correct
system operation. Undersized valves do not have
sufficient capacity at maximum load. Oversized
valves do not have sufficient authority over the load
in modulating applications.
Oversized valves can cause excessive cycling and
the seat and ball can be damaged because of the
restricted opening.
Proper Use
These valves are intended for use in chilled water and hot
water closed loop applications only, with a media
temperature range of 0 ºF to +212 ºF (-18 ºC to 100 ºC),
and static pressures up to 600psi. These valves are NOT
suitable for oil, combustible gases, or steam.
These valves are to be operated with the Honeywell
MN7510A2001 actuator only.
Water should be properly filtered, treated and conditioned
for good operating performance, according to local
conditions, and recommendations of the boiler or chiller
manufacturers. The installation of strainers and filters is
recommended.
IMPORTANT: The presence of excessive iron oxide
(red rust) in the system voids the valve warranty.
Required Operating Torque
The VB6 series 6-way control ball valves are to be operated
with the Honeywell MN7510A2001 actuator only
These valves use a patented seat design that reduces the
torque needed. The nominal required operating torque is
88 lb-in.
Table 1: Close off Pressure
Valve Size
Close-off Pressure Rating
1/2 inch
200 psi (1380 kPa)
Flow Characteristic
The VB6 series 6-way Ball Valves have true equal
percentage flow characteristic, thanks to precision
machined metal discs in front of the ball.
Valve Sizing
Typical pressure drop across a control valve is in the range
of 3 to 5 psid, however the best control is achieved when
the valve pressure drop is as close to the coil pressure
drop as possible. A 6-Way valve will have two CV
calculations, one each for Sequence 1 and Sequence 2,
which will feature different flow rates most of the time.
VB6 series 6-Way Control Ball Valves and Actuators - Installation Instructions
31-00380M-01 2
INSTALLATION
When installing this product...
1. Read these instructions carefully. Failure to follow them could damage the product or cause a hazardous condition.
2. Check ratings given in instructions and on the product to ensure the product is suitable for your application.
3. Installer must be a trained, experienced service technician.
4. After installation is complete, check out product operation as provided in these instructions.
Preparation
CAUTION
Equipment Damage Hazard
Foreign particles like dirt and metal chips can damage the ball seals.
For trouble-free operation of the product, good installation practice must include initial system flushing, and
chemical water treatment. Clean the lines upstream of particles larger than 1/16 inch diameter (welding slag, pipe
scale, sand and other suspended particulate). Use of a 50 micron (or finer) system side stream filter is suggested.
Remove all filters before flushing.
Do not use boiler additives, solder flux and wetted materials which are petroleum based or contain mineral oil,
hydrocarbons, or ethylene glycol acetate. Compounds which can be used, with minimum 40% water dilution, are
diethylene glycol, ethylene glycol, and propylene glycol (antifreeze solutions).
If installing these valves in an addition to, or retrofitting an existing building, do not assume that the fluid in the
existing piping meets these criteria.
CALIFORNIA PROPOSITION 65 WARNING
This product can expose you to chemicals including lead, which is known to the State
of California to cause cancer, birth defects, or other reproductive harm. For more
information, go to www.P65Warnings.ca.gov.
VB6 series 6-Way Control Ball Valves and Actuators - Installation Instructions
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Mechanical Installation of the Valve
IMPORTANT: Hold valve with pipe wrench by
hexagonal fitting ONLY. Do NOT handle the Valve
body with the pipe wrench; product damage may
result.
Refer Dimension section on page 9 for more details on
dimensions of Valve body and actuator.
1. Clean the lines upstream of particles larger than 1/16
in. diameter (welding slag, pipe scale and other
contaminants) to properly flush the system.
2. Proceed with installation once the system specifics
(expansion/contraction of the system and its medium
as well as operating pressures) are within tolerances.
3. Eliminate air or air-bubbles from system.
4. Use the markings on the valve bodies to familiarize
yourself with the A, B, and AB piping connections.
5. Connect the AB-ports of the valve to the supply and
return pipes of the coil.
6. Connect the A-ports and B-ports as per the flow
sequences. Refer to below figure.
Figure 1. Typical flow directions for Sequence 1 and 2.
IMPORTANT: Strictly follow flow direction and port
connections as per flow sequences.
7. Clear threads on both valve and piping of any debris.
Honeywell recommends Permabond A1044 or
equivalent thread or pipe sealant. When using Teflon
tape, it is recommended to use 4-6 rounds of tape
applied tightly in clockwise rotation. When using
hemp as pipe sealant, ensure no strands are left in the
valve or piping.
8. Valves must be installed avoiding unnecessary pull or
twist in the valve housing.
9. Use the Bracket as shown below figure if non-flexible
pipes are used in piping to keep pipes firm and
parallel.
Figure 2. Assembly of Bracket for non-flexible piping
Valve Insulation
To avoid water condensation dripping from the 6-way
valve, insulate around the pipe connections and the
structural box, but do not cover the gear box in insulation.
Mechanical Installation for Actuator
CAUTION
To avoid personal injury (electrical shock) and to
prevent equipment damage, before installation,
you must remove power.
Mounting Position
1. Choose a mounting position permitting easy access
to cables and controls.
2. Make sure that the actuator stem is in horizontal to
upright vertical position, but never in below horizontal
position. Condensate from Valve body may flow into
the Gear box or actuator, causing damage.
VB6 series 6-Way Control Ball Valves and Actuators - Installation Instructions
31-00380M-01 4
Figure 3. Actuator mounting
NOTE: Further, in order to guarantee IP54, only
original Honeywell grommets may be used.
Preparing Actuator for mounting
1. Use a suitable plier to hold the clip of the Universal
shaft adapter.
2. Pull out the Clip as shown in below figure to remove
Universal shaft adapter. Now, the actuator is ready to
assemble on 6-way control ball valve.
Assembling the actuator on Valve body
1. Make sure that the Gear box is in zero position as
shown in below figure. Use the appropriate wrench to
adjust (if necessary).
Figure 4. Zero position of Gear box on Valve body
2. Slide the actuator into Actuator pedestal as shown in
below figure. Do not use additional tools or pressure
as the Actuator pedestal is designed to press fit with
the MN7510A2001 actuator.
Figure 5. Assembly of Actuator pedestal
3. Insert the Stem adapter into the Actuator output hub
(Stem adapter and Output hub are keyed so they can
be assembled in one way only).
Figure 6. Assembly of Stem adapter
IMPORTANT: To prevent equipment damage, you
must remove power or set the function selection
switch to the “Service/Off” position before manual
adjustment.
4. Press and hold the Declutch button to permit rotation
of the Stem adapter to any position.
Rotate the Stem adapter, so that the notch on the
Stem adapter points as shown in figure below.
Figure 7. Adjusting the Stem adapter to zero position
VB6 series 6-Way Control Ball Valves and Actuators - Installation Instructions
5 31-00380M-01
5. Slide the Brass sleeve over the end of the Stem
adapter as shown in figure below.
Figure 8. Assembly of Brass sleeve
6. Place the actuator assembly on the Valve body as
shown in below figure.
IMPORTANT! The only possible way that the valve
stem and actuator Stem adapter can be assembled
together is with both in the Zero position.
Figure 9. Assembly on the Valve body.
7. Insert the Screw (M4) and Washer (supplied with
package) into the linkage shaft and tighten the screw
(1.8 -2.5 Nm) to firmly assemble the actuator with
Valve body. See figure below.
Figure 10. Mounting of Screw in actuator assembly
8. Hold the handle in the vertical position (as shown
below) and insert the handle on the linkage Stem
adapter knob by pressing it downwards (press fit) to
assemble it firmly.
Figure 11. Mounting of Handle on the actuator
Manual Adjustment
IMPORTANT: To prevent equipment damage, you
must remove power or set the function selection
switch to the “Service/Off” position before manual
adjustment.
After removing power or setting the function selection
switch to the “Service/Off” position, the Gear box can be
disengaged using the Declutch button, permitting the
handle to be manually rotated to any position.
VB6 series 6-Way Control Ball Valves and Actuators - Installation Instructions
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Electrical Installation
The most important part of the electrical installation is the
power supply for the actuator.
CAUTION
To avoid personal injury (electrical shock) and
to prevent equipment damage, before
installation, you must remove power.
1. Unscrew the actuator wiring cover in order to access
to the terminal block(s) as shown below.
Figure 12. Removable Access Cover
2. Perform the wiring of actuator using Figure 13 to
Figure 15 as per the required application.
Figure 13. MN7510 (Modulating Mode).
Figure 14. MN7510 (Floating Mode).
Figure 15. MN7510 (2-Position Mode).
3. If necessary, use the appropriate electrical cable
conduits and cable gland to properly secure the
actuator wiring.
4. Replace the wiring cover once done.
VB6 series 6-Way Control Ball Valves and Actuators - Installation Instructions
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Actuator Run modes
The function selection switch (see Figure 16) can be used to place the actuator into any one of two different modes:
• Modulating run mode
• Floating/2-position run mode
• Service/Off mode.
Figure 16. Function Selection Switch
Modulating Run Mode
The Modulating Run mode can be used in four different types of control settings:
• 2…10 Vdc
• 0…10 Vdc
• 10…0 Vdc
• 10…2 Vdc
If the function selection switch has been set to one of the four modulating control settings - and if the actuator is wired
correspondingly (see Figure 13) - then as soon as operating power is applied, the shaft adapter will run first completely
counterclockwise and then completely clockwise, after which it will run according to the control signals applied.
Figure 17. Flow curve with control signal settings
VB6 series 6-Way Control Ball Valves and Actuators - Installation Instructions
31-00380M-01 8
Use the above flow curve with given actuator control signal settings to configure 6-way valve for Sequence 1 (cooling),
Sequence (2), and Off-position. Note that in Figure 13 it is shown how to override the actuator with a switch on wiring
terminal 4 to go to the 50% position. This may also be used to rotate the valve to the zero (closed) position.
IMPORTANT: The zero (closed) position of the valve can be achieved with control signal shown in the below table.
Valve closed command
(45-degree actuator rotation)
Actuator Control Signal Setting
Controller Output
0-10 Vdc
5 Vdc
2-10 Vdc
6 Vdc
10-0 Vdc
5 Vdc
10-2 Vdc
6 Vdc
Floating/2-Position Run Mode (Not recommended)
Using the MN7510A2001 actuator in floating / 2-position mode is not recommended with 6-way valves. Because both
Sequence 1 and Sequence 2 are closed at the actuator mid-stroke, 45 degree actuator rotation, it must be possible to
command the actuator to position itself in the mid-stroke position, which is difficult to do with precision in floating mode,
and impossible when floating mode is used for 2-position control.
If it is desired to use the 6-way valve for simple seasonal changeover service, it is best if three distinct positions can be
achieved:
1. Fully clockwise actuator rotation for Sequence 2 to be fully open.
2. Fully counterclockwise actuator rotation for Sequence 1 to be fully open.
3. Exactly mid-stroke, 45-degree actuator rotation, for Sequence 1 and 2 both being closed.
This scheme can only be achieved with the actuator selector switch set to one of the four modulating modes, using 0-10
Vdc, 2-10 Vdc, 10-0 Vdc, or 10-2 Vdc to achieve full clockwise, full counterclockwise, and precisely mid-stroke actuator
positions. If desired, the actuator analog feedback can be used to verify actual position.
If only step 1 and 2 above are desired, and there is no need for step 3 to rotate the actuator to exactly 45 degrees to turn
both Sequence 1 and 2 completely off, the floating mode may be used for 3-wire 2-position control.
Power-Off Behavior
If power is removed, the shaft adapter remains in position.
Service/Off Mode
If the function selection switch is set to the “Service/Off” position, then all rotary movement is cancelled, and all control
signals are ignored, thus allowing the actuator to be manually operated safely. Press and hold the Declutch button and
use the handle to operate the actuator from Sequence 1, 2, or, Off positions.
Overriding
An override is a condition in which a 24 V signal is applied to terminal 4 of an actuator in the modulating mode, thus
causing the actuator to ignore the control signal at terminal 3, whereupon it will instead move to a position of 50% of its
maximum stroke.
Feedback
If correspondingly wired, the actuator provides, via terminal 5 (see Figure 13 to Figure 15), a feedback signal proportional
to the actual position of the shaft adapter.
VB6 series 6-Way Control Ball Valves and Actuators - Installation Instructions
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Flow Rate as per Valve Pressure Difference (ΔP)
Table 2. Flow rate as per Valve Pressure difference
Valve Size
(inch)
CV value
for sequence
1 or 2*
Flow Rate (in gpm) for below Valve ΔP (in psid)
0.50
0.75
1.00
2.00
3.00
4.00
5.00
6.00
7.00
8.00
9.00
10.00
1/2 inch
CV 0.30
0.21
0.26
0.30
0.42
0.52
0.60
0.67
0.73
0.79
0.85
0.90
0.95
CV 0.46
0.33
0.40
0.46
0.65
0.80
0.92
1.03
1.13
1.22
1.30
1.38
1.45
CV 0.80
0.57
0.69
0.80
1.13
1.39
1.60
1.79
1.96
2.12
2.26
2.40
2.53
CV 1.20
0.85
1.04
1.20
1.70
2.08
2.40
2.68
2.94
3.17
3.39
3.60
3.79
CV 1.90
1.34
1.65
1.90
2.69
3.29
3.80
4.25
4.65
5.03
5.37
5.70
6.01
CV 3.00
2.12
2.60
3.00
4.24
5.20
6.00
6.71
7.35
7.94
8.49
9.00
9.49
CV 4.70
3.32
4.07
4.70
6.65
8.14
9.40
10.51
11.51
12.44
13.29
14.10
14.86
CV 7.40
5.23
6.41
7.40
10.47
12.82
14.80
16.55
18.13
19.58
20.93
22.20
23.40
*For fully open valve position.
For example:
The VB6A003+012+AL valve is with CV 0.30 (for sequence 1) and CV is 1.20 (for sequence 2). If we consider the valve
pressure difference (ΔP) 0.5 psid then as per above table, the Flow rate for sequence 1 will be 0.21 gpm and for sequence
2 will be 0.85 gpm.
VB6 series 6-Way Control Ball Valves and Actuators - Installation Instructions
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DIMENSIONS
Dimension of Valve body
Figure 18. Dimension drawing of VB6 series 6-way control valve
Table 3. Dimensions
Valve nominal size
A B C D E
F
Valve body
Inch
in (mm)
in (mm)
in (mm)
in (mm)
in (mm)
in (mm)
VB6A
1/2"
6.85 (174)
2.76 (70)
6.63 (168)
5.33 (135)
4.14 (105)
3.77(95)
VB6 series 6-Way Control Ball Valves and Actuators - Installation Instructions
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Dimension of Actuators
Figure 19. Dimension drawing of the MN7510A2001 actuator
VB6 series 6-Way Control Ball Valves and Actuators - Installation Instructions
31-00380M-01
January 2021
© 2020 Honeywell International Inc.
http://buildingcontrols.honeywell.com
Printed in USA
VB6 SERIES 6-WAY CONTROL
VALVES AND ACTUATORS
ORDERING INFORMATION
https://www.cpq.honeywell.com/eCommerce#/
Honeywell Building Technologies
715 Peachtree Street NE
Atlanta, GA 30308
United States of America.
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