GENERAL
INDEECO Circulation Heaters are designed to provide
years of trouble free operation if properly installed and
maintained. Please read and follow these instructions for
installing and maintaining the heater.
Circulation Heaters are welded pressure vessels with inlet
and outlet connections to allow fluid flow and heat transfer
to a customer fluid. An Immersion Heater with tubular
electric resistance elements is used to provide heat.
Vessels 3” and larger utilize ANSI flange mounting. 2 ½”
and smaller are constructed with a pipe plug. Refer to
instruction manual 72-2010-83 for details on Flanged
Immersion Heaters and Pipe Thread Heaters. Instructions
for Industrial Control Panels are provided in 87-2000-83.
For additional product offerings, refer to INDEECO catalog
literature on Circulation Heaters, Immersion Heaters, or
Tubular Heating Elements.
ASME certified and stamped pressure vessels can be
supplied by INDEECO when specified.
A variety of designs and sizes are available with outlet
temperatures up to 1200
q
F. Due to these high
temperatures, the heater design features must be closely
matched to the application.
The heating elements are available in various watt density
ratings. Outlet temperature, watt density and flow velocities
determine the element surface temperature. Life
expectancy of the heating element is directly related to its
surface temperature.
Temperature regulating devices, temperature limiting
controls, low liquid level, or low flow controls are
recommended for use with circulation heaters to control the
heating process and safeguard the heater from excessive
temperatures that can cause damage. Also on liquid
systems, damage to fluid could occur if the heater is
allowed to exceed the maximum film temperature
recommended by the manufacturer.
INDEECO 350 Series Circulation Heaters can be specially
designed for use in hazardous areas as specified in Article
500 through 516 of the National Electrical Code. Refer to
the heater nameplate or INDEECO Application Data for
classification of the heater provided. See section below
labeled Hazardous Areas for specific requirements.
It is the ultimate responsibility of the user to verify that
the construction materials provided in the INDEECO
Circulation Heater are suitable for use with the process
fluid. Specifically, corrosion issues must be reviewed.
Refer to INDEECO Application Data for heater
construction materials and design conditions.
INSTALLATION
Handling and Storage
Care must be taken to avoid damage to the heater during
storage and handling. Most heaters are provided from the
factory with insulation. The insulation is covered with light
gauge sheet metal jacketing which can be easily damaged.
Large horizontal vessels are normally provided with lifting
lugs to assist with movement.
Protect the heater from weather damage during storage if
shipping packaging is not sealed.
It is recommended to store the heater in a cool dry area to
help prevent the heating elements from drawing moisture.
INSTALLATION, OPERATING &
MAINTENANCE INSTRUCTIONS FOR
350 SERIES CIRCULATION HEATERS
CAUTION
INDEECO recommends installation be performed by
qualified personnel familiar with the National Electrical
Code and all local codes and standards. It is the
responsibility of the installer to verify the safety and
suitability of the installation
WARNING
DO NOT mount heaters in an atmosphere containing
combustible gases, vapors, dusts, or fibers unless properly
marked as suitable for the condition. Refer to section
below for special instructions for Hazardous Areas.
CAUTION
Failure to follow INDEECO recommendations could
result in premature failure and/or serious equipment
damage.
WARNING
Hazardous voltages are present in this equipment. Lock
out and tag the branch circuit disconnect switch before
working on this heater.
