Schneider Electric AL-161-4 Three-Way Air Switching Valve User Guide
Schneider Electric AL-161-4 Three-Way Air Switching Valve is a device used for central supply air changeover in dual pressures systems. It is designed to provide reliable and efficient control of airflow in HVAC systems. The AL-161-4 features a durable die-cast aluminum actuator with a replaceable neoprene diaphragm, ensuring long-lasting performance. With a flow capacity of 25,920 scim at 15 psig supply with 1 psig drop, it can handle a wide range of airflow requirements. The valve body is rated for 250 psig, making it suitable for various applications. The AL-161-4 is easy to install and maintain, with clear instructions and a compact design. Its versatility and reliability make it an ideal choice for controlling airflow in commercial and industrial HVAC systems.
advertisement
Application
The AL-161-4 is a three-way air switching valve used for central supply air changeover in dual pressures systems.
Features
• Die cast aluminum actuator with replaceable neoprene diaphragm
Applicable Literature
• Cross-Reference Guide, F-23638
• Reference Manual, F-21683
• Application Manual, F-21335
• Valve Products Catalog, F-27384
• EN-123 Air Quality Requirements for Pneumatic
HVAC Control Systems, F-22516
AL-161-4
Three-way Air Switching Valve
General Instructions
Printed in U.S.A. 11/09
©
Copyright 2009 Schneider Electric All Rights Reserved.
F-21286-5
SPECIFICATIONS
Valve Body Rating: 250 psig (1724 kPa).
Actuator Maximum Air Pressure: 30 psig (207 kPa).
Spring Range 8-13 psig (55-90 kPa).
Flow Capacity: 25,920 scim (7,080 ml/s) at 15 psig (103 kPa) supply with 1 psig (6.9 kPa) drop.
Connections:
Actuator, 1/8" FNPT.
Valve Body, 1/2" FNPT.
Port Code and Flow Pattern:
Ambient Temperature Limits:
Shipping & Storage, -40 to 220 ° F (-40 to 104° C).
Operating, 35 to 140° F (2 to 60° C).
Humidity: 5 to 95% RH, non-condensing.
Location: NEMA Type 1.
Table-1 Flow Pattern.
Stem Up
(No Air to Actuator)
Flow
B to AB*
* AB Common.
Closed Port
A
Stem Down
20 psig (138 kPa) Air to Actuator
Flow
A to AB*
Closed Port
B
2
©
Copyright 2009 Schneider Electric All Rights Reserved.
F-21286-5
TYPICAL APPLICATIONS
L1
L2
Electric Time
Switch
1
AL-1XX
Solenoid Air Valve
(E/P Relay)
M N.C.
N.O.
C
AL-161-4
15 psi
(103 kPa)
1 Contacts Open: 20 psig to Thermostats
Contacts Closed: 15 psig to Thermostats
A AB
B
20 psi
(138 kPa)
Pressure
Gauge
0-30 psig
Supply Main to
Thermostats
Figure-1 Typical Piping Diagram.
INSTALLATION
Inspection
Requirements
Warning
Inspect the package for damage. If damaged, notify the appropriate carrier immediately.
If undamaged, open the package and inspect the device for obvious damage. Return damaged products.
•
Job piping diagrams
•
Tools (not provided):
– Appropriate drill and drill bit for mounting screws
– Appropriate screw drivers and wrenches
•
Mounting screws (not provided)
•
Training: Installer must be a qualified, experienced technician
•
Disconnect the power supply (line power) before installation to prevent equipment damage.
•
Make all connections in accordance with the piping diagram.
Caution
•
Do not exceed the ratings of the device(s).
•
Avoid locations where excessive moisture, corrosive fumes, or vibration is present.
•
Do not install insulation on any part of the actuator.
F-21286-5
©
Copyright 2009 Schneider Electric All Rights Reserved.
3
Mounting
The AL-161-4 is not position sensitive.
1. Mount the AL-161-4 to the wall or the subpanel of a control cabinet at any angle, using the attached mounting bracket.
2. Use three (3) 1/4" (6 mm) mounting screws (not provided) to secure the AL-161-4 to the mounting surface.
3. See Figure-2 for mounting dimensions.
Piping
Refer to the typical piping application in Figure-1.
CHECKOUT
With no air to the actuator the flow will be from ports B to AB. Apply 20 psig (38 kPa) to the actuator; the flow will be from ports A to AB.
MAINTENANCE
Regular maintenance of the total system is recommended for sustained optimum performance. For information on air quality requirements consult EN-123, Air Quality
Requirements for Pneumatic HVAC Control Systems, F-22516 .
FIELD REPAIR
Use part number PNV-102-1 when the replacement of the actuator diaphragm is necessary.
DIMENSIONAL DATA
See Figure-2 for dimensional data.
4-5/8
(117)
1
1-1/4
(32)
2-13/16
(71)
1-11/16
(43)
2-1/4
(57)
3-1/2
(89)
4-13/16
(122)
2-1/2
(64)
1-1/8
(29)
Mounting
Slots
9/32 (7) dia.
7/8 (22)
3-5/8
(92)
1-5/8
(41)
6-1/16
(154)
Mounting Slot
9/32 (7) dia.
1-1/4
(32)
3
(76)
1-15/32
(37)
1 Allow 3" (76 mm) clearance above assembly for actuator removal.
Dimensions in inches. ( ) mm.
Figure-2 AL-161-4 Air Switching Valve Dimensions.
On October 1st, 2009, TAC became the Buildings business of its parent company Schneider Electric. This document reflects the visual identity of Schneider
Electric, however there remains references to TAC as a corporate brand in the body copy. As each document is updated, the body copy will be changed to reflect appropriate corporate brand changes.
Copyright 2009, Schneider Electric
All brand names, trademarks and registered trademarks are the property of their respective owners. Information contained within this document is subject to change without notice.
Schneider Electric
1354 Clifford Avenue
P.O. Box 2940
Loves Park, IL 61132-2940 www.schneider-electric.com/buildings
F-21286-5
advertisement
Key Features
- Die cast aluminum actuator with replaceable neoprene diaphragm
- Flow capacity of 25,920 scim at 15 psig supply with 1 psig drop
- Valve body rating of 250 psig
- Easy to install and maintain
- Applicable for various HVAC systems