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PRODUCT DATA
® U.S. Registered Trademark
© 2004 Honeywell International Inc.
All Rights Reserved
71-2429—2
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