Schneider Electric AFS Series Catalog Page
NEW!
PRESSURE
NEW!
September 2016
CUS
PSI
DESCRIPTION
The Cleveland Controls AFS Series Adjustable
Differential Pressure Switches are general-purpose,
airflow-proving switches designed for HVAC and building
automation applications. The AFS Series can be used to
sense positive, negative, or differential air pressure. The
diaphragm and calibration spring are housed in a plated
enclosure with a removable metal guard protecting the set
point screw and snap action switch terminals. Electrical
connections are made through a 7/8 diameter opening in the
metal guard that accepts a conduit connection. Air sampling
connections accept OD rigid or semi rigid tubing. For low
current applications use Model AFS-405 with gold contacts.
FEATURES
• Adjustablesetpoint
• Forstaticordifferentialpressure
• 15Aswitchrating
• Goldcontacts(ModelAFS-405)
• UR,CSA,FMapproved
• Two-yearwarranty
ADjUSTAbLE SETPoINT-AIR DIFFERENTIAL PRESSURE SWITchES
AFS SerieS
AFS Series
APPLICATION
• Provingfanstatus
• Monitoringlterforexcesspressuredrop
• Monitoringductstaticpressure
• Provingairow
• Monitoringdamperstatus
PRESSURE
SPECIFICATIONS
Relay Type SPDT
Relay Rating 2.4 A @ 24 VAC; 15 A @ 277 VAC
Setpoint (SP) Adjustable, 0.05 to 12.0" WC
Differential Progressive
0.02" to 0.8" WC per setpoint
Reset Auto reset All models
Sensor Type Silicone Diaphragm
17
Operating Pressure
Range 0.05 to 12" WC (See ordering)
Overpressure (Burst) 13.85"WC (3.45 kPa)
Max Operating
Pressure (Proof) 13.85"WC (3.45 kPa)
Operating Temperature -40° to 180°F (-40° to 82°C)
Operating Humidity 10 to 90% Non-condensing
Wetted Parts Silicone
Media Compatibility Inert dry air
Process Connection 1/8" FNPT, 1/4" compression,
1/4" barb (see ordering)
Wiring Terminations 3 Terminals
Mounting Vertical 2 tabs w/Holes 0.19" (0.48 cm)
Enclosure Rating Zink-plated steel, NEMA 1
Dimensions 4" w x 6.13"h x 3.56"d,
(10.2 x 15.6 x 9 cm)
Weight 1.2 lb (0.5 Kg)
Approvals UL File #MH6213, CSA, FM
Warranty 2 years
1040
PRESSURE
September 2016
ADjUSTAbLE SETPoINT-AIR DIFFERENTIAL PRESSURE SWITchES
DIMENSIONS
in
(cm)
3.25
(8.23)
1.63
(4.14)
Two mounting holes
3/16 fastener required
2.81
(7.14)
OPERATION
Select a mounting location that is free from vibration. The switch
must be mounted with the diaphragm in any vertical plane in
order to obtain the lowest specified operating setpoint. Avoid
mounting with the sample line connections in the up position.
Surface mount via the two 3/16" diameter holes in the integral
mounting bracket.
Locate sampling probe a minimum of 1-1/2 duct diameters
downstream from the air source. Install the sampling probe as
close to the center of the airstream as possible.
6.13
(15.57)
1.94
(4.93)
3.88
(9.86)
AFS SerieS
PSI
Low pressure inlet (B)
3.25
(8.23)
Refer to the Dimensions drawing to identify the high pressure inlet (A) and the low pressure inlet (B), and connect the
sample lines as follows:
C NO NC
1.38
(3.50)
0.44
(1.12)
High pressure inlet (A)
Positive Pressure Only
Connect the sample line to (A);
(B) remains open to the atmosphere.
Negative Pressure Only
Connect the sample line to (B);
(A) remains open to the atmosphere.
Two Negative Samples
Connect the higher negative sample to (B);
Connect the lower negative sample to (A).
Two Positive Samples
Connect the higher positive sample to (A);
Connect the lower positive sample to (B).
One Positive and One Negative Sample
Connect the positive sample to (A);
Connect the negative sample to (B).
0.78
(1.98)
0.710
(1.80)
PRESSURE
ORDERING INFORMATION
MODEL DESCRIPTION
AFS-145* Differential pressure switch 0.05" to 12" W.C. (12.5 to 2989 Pa), 1/8" NPTF, SPDT
AFS-222* Differential pressure switch 0.05" to 12" W.C. (12.5 to 2989 Pa), 1/4" compression fittings, SPDT
AFS-222-112 Differential pressure switch 0.05" to 12" W.C. (12.5 to 2989 Pa), 1/4" barbed fittings, SPDT
AFS-262* Differential pressure switch 0.05" to 2" W.C. (12.5 to 498 Pa), 1/4" compression fittings, SPDT
AFS-262-112 Differential pressure switch 0.05" to 2" W.C. (12.5 to 498 Pa), 1/4" barbed fittings, SPDT
AFS-405 Differential pressure switch 0.05" to 12" W.C. (12.5 to 2989 Pa), gold contacts, SPDT
* C models Kele calibration available
RELATED PRODUCTS
21122 4" aluminum impact tube, 1/4" OD connection
21122-112 6" aluminum impact tube for 1/8" thru 1/4" ID flexible plastic tubing
60681 Static or total pressure sensing kit
A-301-K Duct static pressure tip, 1/4" compression
A-302-K Duct static pressure tip, 1/4" barb
A-308-K Duct static pressure fitting, 1/4" barb
A-345-K Flange mounting kit (1 required for each A-301-K or A-302-K)
T-101 1/4" OD black poly tubing, 1 coil, 250 ft (76 m)
PVG-1 Compact pressure or vacuum generator
17
1041
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