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Honeywell PRESSURETROL L404T User Manual

L404f,t,v pressuretrol, Controllers, Application

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PRODUCT DATA

71-2429-06

L404F,T,V
PressureTrol

®

Controllers

APPLICATION

L404F PressureTrol

®

Controllers provide operating control

with automatic limit protection for pressure systems of up to

2070 kPa, or 300 psi.

L404T,V PressureTrol

®

Controllers are for use on oil burner

systems for pressures up to 1035 kPa or 150 psi.

FEATURES

• Models available in a series of control ranges, and

pressure scales in kPa and psi.

• All models automatically reset and have an adjustable

differential.

• Models have snap switch to open or close a circuit on

a pressure rise.

• Case has a clear plastic cover so setpoints can be

observed.

• 1/4 inch—18 NPT connection for pipe on diaphragm

assembly.

• Ground screw terminal.
L404F:

• Controllers may be used with steam, air, or

noncombustible gases, or fluids noncorrosive to the

pressure sensing element.

L404T:

• High pressure limits, break a circuit on oil pressure

rise above setpoint.

L404V:

• Low pressure limits, makes a circuit on oil pressure

rise above setpoint.

Contents

Application ........................................................................

1

Features ...........................................................................

1

Specifications ...................................................................

2

Ordering Information ........................................................

2

Installation ........................................................................

4

Settings and Adjustments .................................................

6

Checkout ..........................................................................

7

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