Honeywell L480B, L480G Product Information Sheet

L480B,G Temperature Controllers

PRODUCT DATA

FEATURES

APPLICATION

The L480B,G Temperature Controllers operate electric dampers, valves, and compressor or fan motors to provide temperature or limit control of air conditioning systems and refrigeration units.

•Typical applications include freezer cabinets, display cases, beverage coolers, milk cooling tanks and air conditioners.

•The L480B can act as a frost alarm operator in storehouses, orchards, or other locations where frost could damage crops or equipment.

•The L480B automatically recycles. It has a single-pole, double-throw (spdt) switch that can be wired to make an alarm circuit at the setpoint.

•The L480G is a manual reset model. Its single-pole, single-throw (spst) switch locks out the control circuit on temperature fall to the setpoint.

•A dual temperature scaleplate is provided for both Fahrenheit and Celsius readings.

•The temperature range is 20°F to 60°F (-5°C to +15°C).

•The L480B,G has a 20 foot (6 meter) sensing element with no sensing bulb.

•The enclosed snap switch is dustproof and moistureproof for trouble-free operation.

•The controller can be mounted horizontally or vertically on a wall or panel, or directly on the compressor case.

	Contents
Application ........................................................................	1
Features ...........................................................................	1
Specifications ...................................................................	2
Ordering Information ........................................................	2
Installation ........................................................................	2
Operation and Checkout ...................................................	4

60-2203-05

L480B,G TEMPERATURE CONTROLLERS

SPECIFICATIONS

Models:

L480B Temperature Controller with spdt snap switch, automatic recycling.

L480G Temperature Controller with spst snap switch, manual reset.

Switching Action:

L480B: Breaks control circuit and makes another circuit (makes R-B and breaks R-W) on temperature fall. Automatically recycles.

L480G: Breaks control circuit on temperature fall. Manual reset.

Electrical Ratings (Amperes):

See Table 1.

DC Rating: 0.2A at 120 Vdc, 0.1A at 240 Vdc.

Pilot Duty Rating: 125 VA

Table 1. Full Load and Locked Rotor Ampere ratings.

L480B,G		120 Vac	240 Vac
Full Load	10.2		6.5
Locked Rotor	61.2		39.0

Ambient Temperature Range:

-20°F to +125°F (-11°C to +52°C).

Maximum Sensor Temperature:

225°F (107°C).

Operating Temperature Range:

20°F to 60°F (-5°C to +15°C); Dual Fahrenheit/Celsius scaleplate.

Temperature Sensing Means:

20 ft (6m) element, no sensing bulb.

Temperature Setting Means:

A slotted screw at the top of the controller. The setpoint is indicated through a scale opening in the cover.

Differential:

Nonadjustable, additive, and fixed, 10°F (6°C) maximum.

Finish:

Gray.

Mounting Means:

Mounting lugs located on back of case.

Dimensions:

See Fig. 1.

Approvals:

Underwriters Laboratories Inc., Listed: File Number SA481, Vol. No. 2, dated 02-09-66; Guide No. SDFY2. Canadian Standards Association Certified: Listing G, File No. LR1620; Guide No. 400-E-0.

Accessories:

314439 Clips for mounting element inside duct. Specify quantity needed when ordering.

7640HX Assembly Kit for installing tubing when access into duct is not possible.

For Immersion well assemblies, see Honeywell TRADELINE® Catalog.

113665 Grommet.

INSTALLATION

When Installing this Product...

1.Read these instructions carefully. Failure to follow them could damage the product or cause a hazardous condition.

2.Check the ratings given in the instructions and on the product to make sure the product is suitable for your application.

3.Installer must be a trained, experienced service technician.

4.After installation, check out the product as provided in these instructions.

CAUTION

Disconnect the power supply before installation to prevent electrical shock or possible equipment damage.

ORDERING INFORMATION

When purchasing replacement and modernization products from your TRADELINE® wholesaler or distributor, refer to the TRADELINE® Catalog or price sheets for complete ordering number. If you have additional questions, need further information, or would like to comment on our products or services, please write or phone:

1.Your local Honeywell Environmental and Combustion Controls Sales Office (check white pages of your phone directory).

2.Honeywell Customer Care 1885 Douglas Drive North

Minneapolis, Minnesota 55422-4386

3.http://customer.honeywell.com or http://customer.honeywell.ca

International Sales and Service Offices in all principal cities of the world. Manufacturing in Belgium, Canada, China, Czech Republic, Germany, Hungary, Italy, Mexico, Netherlands, United Kingdom, and United States.

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