Submittal Sheet

ManualsBrandsHoneywell ManualsHeating SpecialtiesPressuretrol Controller w/ Auto recycle (2 psi to 15 psi)

Table Of Contents

PRODUCT DATA

71-2429-04

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 ........................................................................ 3

Settings and Adjustments ................................................. 6

Checkout .......................................................................... 7

Summary of content (8 pages)

PAGE 1
L404F,T,V PressureTrol® Controllers PRODUCT DATA 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.
PAGE 2
L404F,T,V PRESSURETROL® CONTROLLERS SPECIFICATIONS Model: L404F,T,V PressureTrol® Controllers. See Table 1. Table 1. Models with kPa—psi.
PAGE 3
L404F,T,V PRESSURETROL® CONTROLLERS Table 2. Conversion Table. Operating Range Conversions kg/cm2 0.1 to 1.05 Subtractive Differential Conversions kPa kg/cm2 psi 15 to 100 2 to 15 0.15 to 0.4 kPa psi 15 to 40 2 to 6 0.4 to 3.5 35 to 350 5 to 50 0.4 to 1.0 40 to 100 6 to 14 0.7 to 10.0 70 to 1035 10 to 150 0.7 to 1.6 70 to 150 10 to 22 1.5 to 20.0 140 to 2070 20 to 300 1.5 to 3.5 150 to 300 20 to 50 Switching Action: Snap switch breaks R-B (closes R-W) on pressure rise.
PAGE 4
L404F,T,V PRESSURETROL® CONTROLLERS IMPORTANT When making pipe connections, use pipe dope sparingly to seal the joints; any excess dope may clog the small hole in the fitting and prevent the controller from operating properly. Locate the L404F where the ambient temperature will not exceed 66°C (150°F). The L404F can be mounted near the pressure gauge, at a remote location, in a fitting provided by the boiler manufacturer, or in a special mounting on low water cutoffs.
PAGE 5
L404F,T,V PRESSURETROL® CONTROLLERS MAIN OIL LINE STRAINER MANUAL SHUTOFF VALVE OIL PUMP WITH PRESSURE RELIEF ATOMIZER LOW OIL LOW OIL PRESSURE TEMPERATURE RECIRCULATING CONTROLLER VALVE AND SAFETY SHUTOFF VALVE HIGH OIL PRESSURE CONTROLLER MANUAL SHUTOFF VALVE ATOMIZING MEDIUM (AIR OR STEAM) TO OIL BURNER M17861 Fig. 3. Typical locations of pressure controllers in an oil burner system. WIRING WARNING OIL PRESSURE CONTROLLER (AT RIGHT ANGLES TO THE MAIN PIPE LINE) Electrical Shock Hazard.
PAGE 6
L404F,T,V PRESSURETROL® CONTROLLERS LINE VOLTAGE THERMOSTAT L404F PRESSURETROL OIL PRESSURE CONTROLLER 2 R OTHER CONTROLLERS, LIMITS, AND INTERLOCKS L1 (HOT) W L2 L2 B FLAME SAFEGUARD CONTROL M9790 Fig. 10. Hookup of an oil pressure controller used on a single burner or multiburner system with an external oil pump. MOTOR L1 L2 (HOT) POWER SUPPLY 1 SETTINGS AND ADJUSTMENTS 1 PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED.
PAGE 7
L404F,T,V PRESSURETROL® CONTROLLERS DIFFERENTIAL ADJUSTING SCREW However, if recalibration is necessary, remove the cover and loosen the setscrews which hold the scaleplate. Adjust the plate up or down, as required, to bring the device into calibration. Tighten the setscrews securely and replace the cover.
PAGE 8
L404F,T,V PRESSURETROL® CONTROLLERS Automation and Control Solutions Honeywell International Inc. Honeywell Limited-Honeywell Limitée 1985 Douglas Drive North 35 Dynamic Drive Golden Valley, MN 55422 Toronto, Ontario M1V 4Z9 customer.honeywell.com ® U.S. Registered Trademark © 2007 Honeywell International Inc. 71-2429—04 M.S. Rev.