Honeywell L482A Specifications

L482A Low Limit

Controller

SPECIFICATION DATA

FEATURES

• Mounts horizontally or vertically on a wall or panel, or directly on sheet metal duct

• Manual reset

• Two spst switches

RC38

GENERAL

The L482A Low Limit Controller provides temperature or limit control of air conditioning systems by operating electric motors for dampers, valves, compressors, or fans. It responds to the lowest temperature to which any one-foot portion of the 20-foot, temperature-sensitive element is exposed. It can be used to close electrically operated dampers, open electrically operated valves or to shut off compressor or fan motors when the element senses temperatures below a critical point. The L482A can also act as a frost alarm sensor in storehouses or other locations where low temperatures would damage building contents.

DESCRIPTION

The L482A Low Limit Controller provides temperature or limit control of air conditioning systems by operating electric motors for dampers, valves, compressors, or fans.

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L482A LOW LIMIT CONTROLLER

SPECIFICATIONS

Model:

❑ L482A Low Limit Controller with two spst snap switches

Switching Action:

Main switch (M2) opens on a drop to setpoint; auxiliary switch

(M1) closes. Manually reset.

Temperature Setpoint Range:

15 to 55F (-9 to 13C), stop limits minimum to 34F (2C)

Sensing Means:

20 ft (6.1m) sensing element. Controller operates at coldest

one-foot portion of element.

Temperature Setting Means:

Slotted screw at top of device. Setpoint is indicated through

scale opening in cover.

Differential:

Nonadjustable and additive; 5F (3K)

Listing:

UL Listed CSA Listed

Electrical Ratings (Amperes):

Pilot Duty Rating (Both Poles): 125 VA, 24 to 600V ac; 57.5 VA, 120 to 300V dc

Switch Number M2 (Main)

Voltage 120Vac208Vac240Vac277V

Full Load 16.0 9.2 8.0 —

Locked Rotor 96.0 55.2 48.0 —

Non-inductive 16.0 9.2 8.0 7.2

Switch Number M1 (Auxiliary)

Full Load 6.0 3.3 3.0 —

Locked Rotor 36.0 19.8 18.0 —

Non-inductive 6.0 6.0 6.0 6.0

Accessories:

Bag assemblies for immersing sensing element in water coil

(includes 1/2-14 NPT plug): 7617M 3/4 in. (19 mm) long opening for sensing element 7617ABY 1-3/8 in. (35 mm) long opening for sensing

element

CCT1802 Grommet for mounting element in hole in duct wall CCT2600 Clips for mounting element inside duct 7640HX Kit for installing sensing element when access

into duct is not possible

Ambient T emperatures:

Case:

Maximum: 140F (60C) Minimum: 20F (-7C) or more above setpoint

Element:

Maximum: 250F (121C)

Finish:

Gray enamel

Mounting Means:

Mounting holes under cover

Dimensions In Inches (Millimeters):

SETPOINT SCALE

PUSH

RESET

1/8 INCH BY 20 FT SENSING ELEMENT

SETPOINT ADJUSTMENT

4-11/16

(119)

By using this Honeywell literature, you agree that Honeywell will have no liability for any damages arising out of your use or modification to, the literature. You will defend and indemnify Honeywell, its affiliates and subsidiaries, from and against any liability, cost, or damages, including attorneys’ fees, arising out of, or resulting from, any modification to the literature by you.

Home and Building Control

Honeywell Inc. Honeywell Plaza P.O. Box 524 Minneapolis MN 55408-0524

Honeywell Latin American Division

Miami Lakes Headquarters 14505 Commerce Way Suite 500

Home and Building Control

Honeywell Limited-Honeywell Limitée 740 Ellesmere Road Scarborough Ontario M1P 2V9

Honeywell Europe S.A.

3 Avenue du Bourget B-1140 Brussels Belgium

Miami Lakes FL 33016

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