Submittal Sheet

ManualsBrandsHoneywell ManualsHeating SpecialtiesPressuretrol Controller, Manual Reset, 10 psi to 150 psi

Table Of Contents

PRODUCT DATA

60-2156-03

L4079A,B,W

PressureTrol

Limit Control

APPLICATION

The L4079A,B, and W PressureTrol

Limit Controls are high

pressure limit switches which break electrical circuits when

pressure rises to a preset value.

The L4079A and B can be used with steam, air,

noncombustible gases, and fluids noncorrosive to the sensing

element.

L4079W is for use on oil burner systems.

FEATURES

• L4079A has two ganged spst switches; breaks two

circuits (may be both sides of the power supply)

simultaneously.

• L4079B has one spst switch.

• L4079W is the same as L4079B, but with seals for oil

applications.

• MICRO SWITCH

snap-acting switches are visible

through transparent cover.

• Switches open automatically, but must be reset

manually.

• Trip-free reset mechanisms do not permit the limiting

role of the PressureTrol

Control to be defeated by

jamming the reset lever.

• Control does not need leveling.

• The L4079 is unaffected by moderate vibration.

Contents

Application ........................................................................ 1

Features ........................................................................... 1

Specifications ................................................................... 2

Ordering Information ........................................................ 2

Installation ........................................................................ 3

Wiring ............................................................................... 3

Checkout .......................................................................... 4

Summary of content (4 pages)

PAGE 1
L4079A,B,W PressureTrol® Limit Control PRODUCT DATA FEATURES • L4079A has two ganged spst switches; breaks two circuits (may be both sides of the power supply) simultaneously. • L4079B has one spst switch. • L4079W is the same as L4079B, but with seals for oil applications. • MICRO SWITCH® snap-acting switches are visible through transparent cover. • Switches open automatically, but must be reset manually.
PAGE 2
L4079A,B,W PRESSURETROL® LIMIT CONTROL SPECIFICATIONS Models: Pressure and Electrical Specifications: See Table 1. Table 1. Pressure and Electrical Ratings. Range Model Number psi Ratings in Amperes Maximum Diaphragm Pressure kPa psi 120 Vac kPa 240 Vac Locked Rotor Full Load Full Load 2 to 15 15 to 100 25 170 9.8 5 to 50 35 to 350 85 590 9.8 58.8 4.9 29.4 10 to 150 70 to 1035 225 1550 9.8 58.8 4.9 29.4 L4079B1066b 20 to 300 140 to 2070 350 2410 9.8 58.8 4.9 29.
PAGE 3
L4079A,B,W PRESSURETROL® LIMIT CONTROL INSTALLATION When Installing This Product… 1. 2. 3. 4. Read these instructions carefully. Failure to follow them could damage the product or cause a hazardous condition. Check on the ratings given in the instructions and marked on the product to make sure the product is suitable for your application. Installer must be a trained, experienced service technician. After installation is complete, check out the product operation as provided in these instructions.
PAGE 4
L4079A,B,W PRESSURETROL® LIMIT CONTROL Manual Resetting When the circuits have broken automatically, they must be manually reset. After the pressure returns to normal, manually reset by depressing the manual reset button(s) firmly and releasing. The circuit is not complete until the reset button is released. The trip-free manual reset mechanism prevents the limit controller from operating as an automatic controller (selfresetting) even if the manual reset button has been tied down.