| Вид документа | Інструкція |
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| Виробник | JCI |
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| Моделі | VA-7450-10011, VA-7452-90011, VA-7450-8900 |
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| Група обладнання | valves |
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| Мова документа | англійська |
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| Розмір файлу | 0.2 МБ |
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Про документ
The VA-7450 Series Electric Valve Actuators provide on/off, floating, or proportional control in HVAC applications. The compact design makes them ideal for confined locations such as fan coil applications. They mount in the field or can be ordered factory coupled to Johnson Controls VG4000 or VG5000 Series Zone Valves.
Ключові дані
| Power requirements | 24 VAC ±15% at 50/60 Hz; 2.7 VA at Maximum Power Supply; Class 2 |
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| Input signal | VA-7450-10011: 24 VAC, 50/60 Hz; VA-7452-90011: 0 to 10 VDC |
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| Output force | 21.5 lb (96 N) Minimum |
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| Stroke | 0.20 in. (5 mm) Maximum |
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| Full stroke cycle time | 65 Seconds |
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| Enclosure | Glass and Mineral-Filled Plastic Resin; NEMA 1, IP40 (EN 60529) |
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| Ambient operating conditions | 32 to 122°F (0 to 50°C), Noncondensing |
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| Fluid temperature limits | 35 to 203°F (2 to 95°C) |
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Застосування
- On/off, floating, or proportional control in Heating, Ventilating, and Air Conditioning (HVAC) applications
- Fan coil and other confined-location installations
- Coupled to Johnson Controls VG4000 or VG5000 Series Zone Valves
Особливості
- Compact design for installations in confined locations
- LED display providing direct visual indication of actuator operating status
- End-of-stroke confirmation every 2 hours (~80 seconds drive)
- Auto-commissioning: self-calibrates full-stroke end position on power-up
- Anti-sticking cycle (jumper selectable): one complete cycle every 24 hours to clear impurities from valve plug and seat
- Field-mountable or factory-coupled to VG4000/VG5000 zone valves
- Optional VA-7450-8900 Manual Override Ring for manually opening two-way N.C. or the N.C. port of three-way mixing valves
- Plenum-rated actuator housing per UL 1995
Технічні дані
| Parameter |
Value |
| Power requirements |
24 VAC ±15% at 50/60 Hz; 2.7 VA at Maximum Power Supply; Class 2 |
| Input signal |
VA-7450-10011: 24 VAC, 50/60 Hz; VA-7452-90011: 0 to 10 VDC |
| Input signal adjustments |
VA-7452-90011: 0 to 10 VDC, 0 to 5 VDC, or 5 to 10 VDC; Direction: Direct (Drive Down) or Reverse (Drive Up); Valve Type: Two-Way N.O. (PDTC), Two-Way N.C. (PDTO), or Three-Way Mixing; Factory settings: 0 to 10 VDC, Direct, Two-Way N.O. (PDTC) |
| Input impedance |
VA-7450-10011: 3,900 ohms; VA-7452-90011: 80,000 ohms |
| Electrical connections |
22 AWG Cable; 9.8 ft (3 m) Long |
| Mechanical connections |
Threaded coupling for Johnson Controls VG4000 or VG5000 Series Zone Valves |
| Enclosure |
Glass and Mineral-Filled Plastic Resin; NEMA 1, IP40 (EN 60529) |
| Output force |
21.5 lb (96 N) Minimum |
| Stroke |
0.20 in. (5 mm) Maximum |
| Full stroke cycle time |
65 Seconds |
| Full stroke cycles |
100,000 |
| Audible noise rating |
25 dBA Maximum at 3.3 ft (1 m) |
| Fluid temperature limits |
35 to 203°F (2 to 95°C) |
| Ambient operating conditions |
32 to 122°F (0 to 50°C), Noncondensing |
| Ambient storage conditions |
-4 to 149°F (-20 to 65°C), Noncondensing |
| Shipping weight |
0.40 lb (0.18 kg) |
Варіанти замовлення
- VA-7450-10011: On/Off or Floating Control
- VA-7452-90011: Proportional Control (includes three spare jumpers)
- VA-7450-8900: Manual Override Ring (ordered separately)
Допуски та стандарти
- UL 873 Listed, File E27734, CCN XAPX (United States)
- Actuator housing plenum rated per UL 1995, Heating and Cooling Equipment
- CSA C22.2 No. 139 Certified, File LR85083, Class 3221 01 (Canada)
- CE Mark per EMC Directive (89/336/EEC)
- IP40 (EN 60529)
Позиції каталогу з цим документом
Текст документа
Installation Instructions VA-7450 Series
Issue Date September 28, 2005
VA-7450 Series
Electric Valve Actuators
Applications Installation
VA-7450 Series Electric Valve Actuators provide
Parts Included
on/off, floating, or proportional control in Heating,
Ventilating, and Air Conditioning (HVAC) applications. • VA-7450 Series Electric Valve Actuator with
The compact design of this actuator series makes it coupler
ideal for installations in confined locations, such as fan • three spare jumpers (VA-7452-90011 only)
coil applications. The VA-7450 Series Actuators are
designed for easy mounting in the field, or they can be
Dimensions
ordered factory coupled to Johnson Controls®
VG4000 or VG5000 Series Zone Valves.
7/8 in. (22 mm) Minimum
Clearance Required for Actuator
IMPORTANT: Before specifying the Mounting and Removal
Operating
VA-7450 Series Electric Valve Actuator for plenum Status LED
applications, verify acceptance of exposed plastic 2-29/32
materials in plenum areas with the local building (74)
authority. Building codes for plenum requirements
vary by location. Some local building authorities
accept compliance to UL 1995, Heating and Cooling
Equipment, while others use different acceptance 2-3/4
criteria. (70)
Cable
Length
9.8 ft
(3 m)
IMPORTANT: Use this VA-7450 Series 1-27/32 2-5/32
(47) (55)
Electric Valve Actuator only to control equipment
under normal operating conditions. Where failure or
malfunction of the VA-7450 Series could lead to Figure 1: VA-7450 Series Electric Valve Actuator
personal injury or property damage to the controlled Dimensions, in. (mm)
equipment or other property, additional precautions
must be designed into the system. Incorporate and Accessories
maintain other devices such as supervisory or alarm A VA-7450-8900 Manual Override Ring is available
systems or safety or limit controls intended to warn (ordered separately) to manually open two-way
of, or protect against, failure or malfunction of the Normally Closed (N.C.) or the N.C. port of three-way
VA-7450 Series. mixing VG4000 or VG5000 Series Zone Valves (as
illustrated in Figure 2). The VA-7450-8900 is
assembled between the VG4000 or VG5000 Series
valve body and the VA-7450 Series Electric Valve
Actuator.
Note: The VA-7450-8900 Manual Override Ring
does not fully close two-way Normally Open (N.O.) or
the N.O. port of three-way mixing VG4000 or
VG5000 Series Zone Valves.
© 2005 Johnson Controls, Inc. 1
Part No. 34-636-771, Rev. C www.johnsoncontrols.com
1-3/8
(35)
27/32
(21)
Manual Override Ring
Turn approximately
90° for maximum stroke.
Figure 2: VA-7450-8900 Manual Override Ring
Dimensions, in. (mm)
VA-7450-10011 (On/Off or Floating Control)
Use the VA-7450-8900 Manual Override Ring for
two-way N.C. or the N.C. port of three-way mixing Figure 3: Proper Actuator and
VG4000 and VG5000 Series Zone Valves. Valve Assembly Orientation
To mount the VA-7450 Series Electric Valve Actuator
VA-7452-90011 (Proportional Control) onto a VG4000 or VG5000 Series Zone Valve, see
Use the VA-7450-8900 Manual Override Ring if a Figure 4 and proceed as follows:
24 VAC power supply is not available. 1. Pipe the VG4000 or VG5000 Series Zone Valve
If a 24 VAC power supply is available with no into the system.
controller signal, set the action of Jumper 5 (JP5) to 2. Check that the VA-7450 Series Electric Valve
Direct Acting (DA) to drive the actuator to the fully up Actuator is in the fully up position.
position, or Reverse Acting (RA) to drive the actuator
to the fully down position. See Table 1 for more 3. Place the threaded coupler of the actuator over
details. the valve stem and bonnet.
4. Rotate the actuator body to the desired mounting
Mounting position.
All VA-7450 Series Electric Valve Actuators ship from 5. Hand tighten the threaded coupler to secure the
the factory in the fully up position. Before mounting the actuator to the valve body.
actuator, please note the following:
• Do not remove the mounting instruction tag that is IMPORTANT: Do not use a wrench or the
attached to the actuator body. body of the VA-7450 Series Electric Valve Actuator
to tighten the threaded coupler. Tightening the
• If the actuator was powered prior to mounting it on threaded coupler in this manner may damage the
the valve, be certain to return the actuator to its actuator. If the actuator needs to be repositioned
original fully up position before proceeding further. after initial installation, loosen the threaded coupler,
• Check that the actuator is free of thermal rotate the actuator body to the desired mounting
insulating material. position, and hand tighten the threaded coupler to
secure the actuator to the valve body.
• Allow a minimum clearance of 7/8 in. (22 mm)
above the actuator body, as illustrated in Figure 1.
• Do not use the actuator as a lever to thread the
valve body onto the piping.
IMPORTANT: Mount the actuator within 90° of
the vertical position above the valve body. Failure to Coupling
Bonnet
mount the actuator within 90° may permit water or Valve
moisture to travel down the valve stem, damaging Stem
the actuator and voiding the warranty.
Figure 4: Mounting the VA-7450 Series
Electric Actuator onto a VG4000 or
VG5000 Series Valve Body
2 VA-7450 Series Electric Valve Actuators Installation Instructions
Jumper Access Door
Wiring
To wire the VA-7450 Series Electric Valve Actuator,
see the appropriate wiring diagram in Figure 5.
Proportional Control
(Model VA-7452-90011)
Red
Power
24 VAC
Blue
Common
–
0 to 10 VDC Figure 6: Opening the
Input
+ White
Signal
Jumper Access Door
2. See Table 1 for the various jumper settings.
On/Off Control Floating Control
(Model VA-7450-10011) (Model VA-7450-10011) Table 1: Jumper Settings
Blue Blue
24 VAC
Common
24 VAC
Common Jumper Function
Factory
White White Jumper Jumper IN Jumper OUT
Up Up Setting
Red Down Red Down Anti-Sticking Cycle
On Off Off
Figure 5: Wiring the VA-7450 Series 1
Electric Valve Actuator
Input Signal Range (VDC)
0 to 10 5 to 10 0 to 5
! CAUTION: Risk of Property Damage.
2 0 to 10
3
Do not apply power to the system before checking
all wiring connections. Short circuited or improperly Valve Body Type
connected wires may result in permanent damage to Three-Way Two-Way Two-Way
4
the equipment.
Action
Direct (DA) Reverse (RA) DA
5
IMPORTANT: Make all wiring connections in Valve Normal Position
accordance with local, national, and regional PDTO (N.C.) PDTC (N.O.)
PDTC
regulations. Do not exceed the electrical ratings of 6
the VA-7450 Series Electric Valve Actuator.
3. Remove or add jumpers using a small
Setup and Adjustments needle-nose pliers. Figure 7 illustrates jumper
locations and factory settings.
Jumper Settings (VA-7452-90011 Only)
To set the jumpers on the VA-7452-90011, proceed as
follows: Anti-Sticking (1)
Valve Normal
1. Carefully remove the jumper access door using Position (6) Input Signal (2)
the tip of a 1/8 in. (3 mm) blade screwdriver, as Input Signal (3)
illustrated in Figure 6. Valve Body Type (4)
Action (5)
Note: The numbers
correspond to the
LED jumper.
Figure 7: Jumper Locations and
Factory Settings
4. Reinstall the jumper access door (top edge first)
and press firmly on the front of the door until it
snaps in place.
VA-7450 Series Electric Valve Actuators Installation Instructions 3
Operation Proportional Control
(VA-7452-90011)
To ensure good system performance, use a
Proportional plus Integral (PI) controller. All When the input signal increases in Direct Acting (DA)
VA-7450 Series Electric Valve Actuators feature a configuration or decreases in Reverse Acting (RA)
Light-Emitting Diode (LED) display designed to provide configuration, the actuator motor drives the gear
direct, visual indication of the actuator operating assembly and pushes down on the valve stem, against
status. See Table 2 for an explanation of the the force of the valve return spring.
LED display. When the input signal decreases in DA configuration
or increases in RA configuration, the actuator retracts,
Table 2: Actuator Operating Status allowing the valve return spring to move the valve
LED Display Description stem up in the direction of its normal position.
On Power Line Present; Motor Not End-of-Stroke Confirmation: When the input signal
Running is applied 0 or 100% continuously, the actuator turns
Single Motor Running
on every 2 hours and drives the motor in the signal
Flash direction for approximately 80 seconds. This action
confirms the end-of-stroke position.
Double End-of-Stroke Confirmation Cycle or
Flash Anti-Sticking Cycle Auto-Commissioning: When power is applied to the
Off Power Line Not Present actuator, the actuator self-calibrates to the full-stroke
end position by performing a complete cycle. The
actuator motor drives in the stem down direction for
On/Off or Floating Control approximately 80 seconds, then it drives to the input
(VA-7450-10011) signal command position.
When the input signal is applied to the Common and Anti-Sticking Cycle: When the anti-sticking cycle is
Down wires, the actuator motor drives the gear enabled (On), the actuator performs one complete
assembly and pushes down on the valve stem, against cycle every 24 hours to clear possible accumulations
the force of the valve return spring. When the input of impurities from the valve plug and seat. The
signal is removed, the actuator remains in its current anti-sticking cycle feature is jumper selectable.
position. Note: It is not possible to control the timing of the
When the input signal is applied to the Common and anti-sticking cycle. Do not select this feature if
Up wires, the actuator retracts, allowing the valve unscheduled cycling of the valve is undesirable for the
return spring to move the valve stem up in the application. The actuator does not respond to an input
direction of its normal position. When the input signal signal command while it is performing an end-of-stroke
is removed, the actuator remains in its current position. confirmation, auto-commissioning, or an anti-sticking
cycle; however, the actuator drives to the commanded
If a continuous input signal is applied to the Down or position once the cycle is complete.
Up wire, the actuator motor shuts off after
approximately 80 seconds.
End-of-Stroke Confirmation: When the input signal
is applied continuously in the same direction, the
actuator turns on every 2 hours and drives the motor in
the signal direction for approximately 80 seconds. This
action confirms the end-of-stroke position.
Note: Johnson Controls Application Specific
Controllers (ASCs) do not continuously power the
floating outputs of VA-7450 Series Electric Valve
Actuators. For more information, refer to the
appropriate ASC product literature.
4 VA-7450 Series Electric Valve Actuators Installation Instructions
Valve Selection: The actuator is factory set for use
with two-way N.O., Push-Down-to-Close (PDTC) N.C.
Service Out
VG4000 and VG5000 Series Zone Valves. For
two-way N.C., Push-Down-to-Open (PDTO) Note: For the
VG4000 and VG5000 Series applications, change the N.C. service port, N.O.
set the jumper for Bypass
valve normal position jumper to PDTO. For three-way
PDTO.
mixing VG4000 and VG5000 Series applications, set
the valve body type jumper to three-way and set the OR
valve normal position jumper so that it corresponds to
the service port of the valve. See Figure 8 for more N.C.
details. Bypass Out
Note: For the
N.O. service port, N.O.
set the jumper for Service
PDTC.
Figure 8: Setting the
Valve Normal Position Jumper
VA-7450 Series Electric Valve Actuators Installation Instructions 5
Technical Specifications
Product VA-7450 Series Electric Valve Actuators
Power Requirements 24 VAC ±15% at 50/60 Hz; 2.7 VA at Maximum Power Supply; Class 2
Input Signal VA-7450-10011 24 VAC, 50/60 Hz
VA-7452-90011 0 to 10 VDC
Input Signal Adjustments VA-7450-10011 None
VA-7452-90011 Input Signal: 0 to 10 VDC, 0 to 5 VDC, or 5 to 10 VDC
Direction: Direct (Drive Down) or Reverse (Drive Up) with
Input Signal Increase
Valve Type: Two-Way N.O. (PDTC), Two-Way N.C. (PDTO), or
Three-Way Mixing
Factory Settings: 0 to 10 VDC, Direct (Drive Down), and
Two-Way N.O. (PDTC)
Input Impedance VA-7450-10011 3,900 ohms
VA-7452-90011 80,000 ohms
Electrical Connections 22 AWG Cable; 9.8 ft (3 m) Long
Mechanical Connections Threaded Coupling for Johnson Controls
VG4000 or VG5000 Series Zone Valves
Enclosure Glass and Mineral-Filled Plastic Resin; NEMA 1, IP40 (EN 60529)
Output Force 21.5 lb (96 N) Minimum
Stroke 0.20 in. (5 mm) Maximum
Full Stroke Cycle Time 65 Seconds
Full Stroke Cycles 100,000
Audible Noise Rating 25 dBA Maximum at 3.3 ft (1 m)
Fluid Temperature Limits 35 to 203°F (2 to 95°C)
Ambient Operating 32 to 122°F (0 to 50°C), Noncondensing
Conditions
Ambient Storage -4 to 149°F (-20 to 65°C), Noncondensing
Conditions
Standards Compliance United States UL 873 Listed, File E27734, CCN XAPX
Actuator Housing is Plenum Rated per UL 1995, Heating and Cooling
Equipment
Canada CSA C22.2 No. 139 Certified, File LR85083, Class 3221 01
CE Mark Per EMC Directive (89/336/EEC)
Shipping Weight 0.40 lb (0.18 kg)
The performance specifications are nominal and conform to acceptable industry standards. For application at conditions beyond these
specifications, consult the local Johnson Controls office. Johnson Controls, Inc. shall not be liable for damages resulting from misapplication or
misuse of its products.
Controls Group
507 E. Michigan Street
P.O. Box 423 Published in U.S.A.
Milwaukee, WI 53201 www.johnsoncontrols.com
6 VA-7450 Series Electric Valve Actuators Installation Instructions
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