© Copyright 2006 OMEGA ENGINEERING, Inc. All rights reserved. This document may not be copied, photocopied,
reproduced, translated, or reduced to any electronic medium or machine-readable form, in whole or in part, without the
prior written consent of OMEGA ENGINEERING, INC
6
SEPDH series
1. Remove the two screws securing the metal plate opposite the temperature
sensor.
2. Remove the metal plate to expose the low and high limit set-point controls.
3. Adjust the high and low temperature set-points to an appropriate level for the
environment. The low temperature set-point is the process control. The high limit
set point is connected to the high temperature limit indicator light.
NOTE: These heaters have a built-in, high limit thermostat that will prevent it from
overheating.
T-3 rated heaters: 292°F [145°C] high limit thermostat
T-4A rated heaters: 158°F [70°C] high limit thermostat
SHDH-C and SSDH-C series
2. For 120VAC model, plug standard 3-prong plug to appropriate electrical power
supply. For 240VAC model, terminate power cord to appropriate electrical power
supply. The power cable consists of three color-coded conductors, black, white,
and green. The black wire should be connected to Line 1. The white wire should
be connected to Line 2. The green wire should be connected to earth ground.
The power connections must be adequately rated to electrially support the
voltage and amperage of the heater. The identifi cation label located on the power
cord displays voltage and amperage requirements. Follow all local electrical
codes for proper electrical connections.
Do not adjust the low set-point higher than the high limit
thermostat.
Do not adjust the low set-point higher than the high temperature
set-point connected to the indicator light.
4. Replace the metal plate and secure with two screws.
1. The drum heater is designed to work at a specifi c voltage. Refer to the lead
wire label or stamp located on the heater for rated voltage and wattage.
Failure to operate the drum heater at its rated voltage could
cause damage to the heater, surface being heated, or contents
of drum.
All electrical connections must be made by qualifi ed personnel
and in accordance with all local codes and regulations.
Properly sized circuit breakers must be used.
The end-user is responsible for providing suitable electrical
protection device. It is highly recommended that a ground fault
circuit breaker be used.
CONNECTING HEATER TO AC POWER
ADJUSTMENT OF TEMPERATURE SET-POINT
© Copyright 2006 OMEGA ENGINEERING, Inc. All rights reserved. This document may not be copied, photocopied,
reproduced, translated, or reduced to any electronic medium or machine-readable form, in whole or in part, without the
prior written consent of OMEGA ENGINEERING, INC
IMPORTANT SAFETY INSTRUCTIONS
3
A person who has not read and
understood all installation instructions
is not qualifi ed to install this product.
Never handle the heater while it is
in operation; always disconnect the
heater from the power source and
allow to cool prior to handling.
Inspect heater before use.
Never operate heater without a
temperature control device.
Do not wrap the heater over itself
If spillage of foreign matter onto
heater occurs, disconnect from
power source and clean after
heater is allowed to cool.
Never operate a heater without an
appropriate heat sink (device being
heated is considered a heat sink).
Do not operate heater above rated
temperature value.
Fasten heater to device using
approved methods only.
Do not repair damaged or faulty
heaters.
Do not crush or apply severe
physical stress on heater or cord
assembly.
Disconnect heater when not in use.
Use specifi ed sized heater with
samed sized drum. Do not use for
other applications.
SEPDH series: Never allow the full
weight of the thermal bulb controller
to hang from the heater.
SEPDH series: the metal enclosure
must not support more than 10lbs
(4.5kg).
Failure to observe these warnings may
result in personal injury or damage to the
heater.
Approvals valid only when
installed in
accordance with all applicable
instructions, codes, and regulations.
Agency Approvals
SHDH and SSDH series
End User Must Comply to the Following:
Only qualifi ed personnel are allowed to connect
electrical wiring.
Disconnect all supply power at the source before
making any power connections.
All electrical wiring must follow local electrical
codes and highly recommend following NEC
Article 427.
Final installation / wiring is to be inspected by the
authority who has jurisdication in the area that
the heater is installed.
The end-user is responsible for providing a
suitable disconnecting device.
The end-user is responsible for providing
suitable electrical protection device. It is highly
recommended that a ground fault circuit breaker
is used.
SEPDH series: A NRTL (National Recognized
Testing Laboratory) listed temperature controller
must be used to control the surface temperature
of the blankets. The controller must be approved
for the area where it is located.
SEPDH series: Heaters provide surface heating,
consult proper authorities for information for
safe heating of materials/ contents of any vessel
heated by SEPDH heaters.
Failure to observe these warnings may result in
personal injury or damage to the heater.
Do not immerse heater in liquid.
Keep volatile or combustible material away from
heater when in use.
Use heater only in approved locations.
Keep sharp metal objects away from heater.
All SEPDH heaters have T ratings described
in Article 501 of the NEC code. The heaters
should not be used in an area with a lower T
rating than the heater. The T rating is stated in
marking on the heater.
Failure to observe these warnings may result in
electric shock, risk of fi re, and personal injury.
73/23/EC (Low Voltage Directive)
FM
APPROVED
Hazardous Locations
Class I, Division 2, Groups A*, B,
C, & D
Class II, Division 2, Groups F & G
SEPDH series
* without included controller only
