©Johnstone Supply eCatalog 216

HVAC CONTROLS Air & Current Controls

Dual Purpose Air Switch • Responds to positive, negative or differential air pressure • Field adjustable from .07" to 12" W.C. • Switch action: SPDT

• Furnished with one 6" piece 1/4" O.D. flexible tubing, nuts and ferrules WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov

Each

Order #

Mfg. # 770-1

Temp. Range

L39-558

-40°F - +180°F

155.00

Air Pressure Sensing Switch • Senses positive, negative, or differential air pressure • Set point range: 0.05 ± .02" W.C. to 12.0" W.C.

• SPDT switch rated 15A @ 125/250/277VAC • One 12" piece of 1/4" O.D. flexible tubing included

CLEVELAND CONTROLS

Each

Order # Mfg. #

L39-312 AFS-222-201

95.00

Universal Air Pressure Sensing Switch • Contains a glass-filled polycarbonate housing containing a sensing diaphragm and an integral snap-acting switch with three male 90 degree quick-connect terminals • Can sense positive, negative or differential air pressure switch

• Field adjustable set-point range .10" W.C. to 10.0" W.C. • Accessories can be applied to a wide variety of residential and light commercial applications

Order # Mfg. # Each L46-987 2374-510 NS2-0000-08 Universal Air Sensing Switch Kit Snap-acting Glass-Filled Polycarbonate Housing 0.10" W.C. to 10.0" W.C. -40°F to +190°F 85.00 Model # Description Switch Action Type Range Temp. Range

Differential Pressure Switches • For sensing air-flow in ducts • Adjustable set point with scale • Range in. W.C. (kPa): 0.05 to 5

• Sensitivity in. W.C. (kPa): B13-738 — 0.04; B13-739 and B13-740 — 0.025 WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov

Each

Order #

Mfg. #

Switch Action Includes

B13-738 B13-739 B13-740

P32AC-2C SPDT P32AF-1C SPDT P32AF-2C SPDT

1/4" Compression Fitting, 4" Extension Tube, Gasket & “U” Mounting Bracket 295.00

“L” Mounting Bracket

265.00

1/4" Compression Fitting, 4" Extension Tube, Gasket & “U” Mounting Bracket 275.00

Sail Switches • Activates equipment that is energized when fan is operating • Designed for use in electric heating systems to prove minimum airflow • Allows wiring of equipment independently of blower motor • Senses vertical or horizontal airflow

• Normally open contacts make at 250 FPM, break at 75 FPM; normally closed contacts make at 75 FPM, break at 250 FPM • Maximum ambient temperature: 125°F at switches, 170°F at sail • Dimensions:3-3/4" W x 2-5/16" H x 2-1/8" D • Switching action: SPDT

Each

Order # Mfg. #

Description Sail Switch

L36-820 S688A1007

225.00

L40-749

123773A

Replacement Sail

75.00

346

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