SSHB, SRMU, SEPHB SERIES
Silicone Rubber Heating Blankets
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PRIOR TO INSTALLATION
PRIOR TO INSTALLATION
Hardware:
junction box
wire ties
mounting hardware
Read and understand this entire manual before operating this electric heater.
1. Check for suspected damage to the heating blanket like rips, punctures, etc.
plug if connecting heater to a receptacle rather than hard wiring to a
temperature controller or junction box.
2. Verify surface to be heated is free from all sharp edges, weld splatter, rust, oil,
etc. Surface must be clean prior to installing heater.
temperature controller and silicone RTV insulating material
sensor
high-temperature adhesive tape
3. Check that the desired placement of the blanket will not cause damage to the
blanket through impact shock, vibration, ambient temperature, or by neighboring
moving parts.
MOUNTING YOUR HEATING BLANKET
4. Confirm voltage / wattage rating of heater is appropriate for power supply
device or temperature controller. The heater is designed to work at a specific
voltage to heat properly.
Your silicone rubber heating blanket can be mounted on both flat and curved
surfaces. However, do not allow your heater to exceed the maximum “bend
radius”. The typical bend radius is approximately 2” (51mm). To determine the
bend radius, slowly bend the heater until it begins to crease or fold. The point
prior to creasing is the bend radius. Your heater may be more flexible in one
direction than the other, however, the heater should be installed with the wires
exiting the bottom if in an outdoor application.
5. Confirm blanket maximum exposure temperature rating is suitable for
environment. The temperature of the internal heating element may run up to
25% higher than the external surface of the blanket. Use extreme caution for
applications that require a process temperature near the maximum exposure
temperature ratings of the blanket.
Your heater can be attached to the surface using:
• Factory applied PSA (pressure sensitive adhesive)
• Factory supplied mechanical fasteners
- All Silicone rubber heating blanket except SEPHB exposure
temperature range: -60ºF to 450ºF (-51ºC to 232ºC)
• Factory supplied or recommended mechanical clamping devices
• High-temperature adhesive tape that will not damage the heater
• Thin layer of RTV
- SEPHB exposure temperature range: -60ºF to 400ºF (-51ºC to 204ºC)
T3: 292ºF (145ºC) high limit thermostat
T4A: 158ºF (70ºC) high limit thermostat
For all installations, regardless of adhesion method:
1. For proper temperature control, place the thermocouple, RTD, or other sensing
device, so that it touches the edge of the heating blanket.
- Sensor must be in close proximity to the heater to prevent overheating.
- If heating blanket is installed on a vertical surface, place sensor directly
on lower edge of heating blanket since heat naturally rises.
- Sensor should be connected in accordance with instructions provided
with temperature controller.
6. If the heating blanket is equipped with PSA (pressure sensitive adhesive),
confirm the heater was manufactured within the last six months. The PSA has a
“shelf life” of six months and must be installed before this time elapses. The date
of manufacture is stamped on the product box.
NOTE: If more than six months has elasped since date of manufacture, the blanket can be sent back
to the factory for re-application of PSA.
7. Confirm all necessary installation hardware and tools are readily available.
Depending on the application, this may include...
- Secure with one strip of aluminum adhesive tape.
Tools:
2. Ensure heater is in contact with the surface to be heated. If air gaps are
present, heat transfer will decrease and there is a potential to overheat the
heating blanket. Use a medium to hard roller to eliminate trapped pockets of air.
wire strippers
cleaning / prep supplies (varies based on what is being cleaned)
medium to hard roller
Do not wrap the heater over itself or allow it to contact a second
heater.
© 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
© 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
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MOUNTING YOUR HEATING BLANKET
CONNECTING YOUR HEATING BLANKET
Installation of heater using factory supplied Pressure Sensitive Adhesive
(PSA):
TO A POWER SOURCE
2. Most heating blankets are available with an optional high-limit safety
thermostat to protect both the heater and the product being heated from
damage if the main controlling device fails. This option is especially
recommended for surfaces that are high risk for heat damage (e.g. plastic).
3. Peel off the release film [Figure A] and then press the heater onto the surface
of the item being heated using a medium to hard rubber roller [Figure B]. Ensure
blanket is making intimate contact with the surface to be heated.
- The pressure sensitive adhesive will cure when the blanket is energized
and heat is generated. PSA generally cures in twenty minutes at 200ºF
(93ºC) in a 68ºF (20ºC) ambient environment. The cure time will vary
with temperature of the blanket and surrounding ambient conditions.
The higher the ambient temperature and set-point of the blanket, the
faster the cure time.
3. Ensure heater is protected by a properly rated circuit breaker or fuse.
4. Use of a ground fault circuit interrupter (GFCI) is highly recommended and
may be required according to local electric code.
5. Two wires (same color) should be connected to the power source (or
temperature control device) directly, through a junction box, or to a connector that
is mated to a receptacle connected to the power source. These heating blankets
are non-polarized, allowing either wire to be connected to the neutral or hot. The
third wire (if applicable), designated by the color green (or a green stripe), should
be connected to ground.
- The blanket may require a temporary method of attachment to secure
the heater until the PSA cures. Use a high-temperature adhesive tape
to secure the heater.
- For larger heaters, press the heater onto the surface as the film is
removed.
6. SEBHB series: The conduit connection is 3/4” hub.
NOTE: OMEGA® does not recommend allowing pressure sensitive adhesive to
cure at temperatures below 40ºF (4ºC).
TROUBLESHOOTING GUIDE
Please read this guide prior to contacting OMEGA. This guide is designed to
answer the most commonly asked questions. If you are unable to identify the
problem or need additional assistance, please contact us at 1-800-USA-HEAT.
PROBLEM
SOLUTION(S)
Figure B: Rolling the Blanket
Figure A: Removing Film
Does not heat
Verify heater is connected to proper voltage.
CONNECTING YOUR HEATING BLANKET
TO A POWER SOURCE
Check to see if there is a resistance reading (not an
open circuit) in heater using an ohm meter.
1. If your heating blanket does not have its own internal temperature control
device, it must be connected to an external control device. The heater must not
be operated without some form of temperature control.
Pressure sensitive adhesive is not
adhering
Verify date of manufacture. PSA has a shelf life of six
months.
Ensure there are no air gaps and heater is making
intimate contact with surface being heated. Use a
medium to hard rubber roller.
- Your heater is designed to operate at a specific voltage ±10%. Refer to the label on the heater
for proper operating voltage and wattage information. Failure to operate the heater at the specified
rating could result in overheating of the heating blanket, the surface being heated, or personal injury.
Also note lower-than-rated voltage will result in under-heating.
Circuit breaker is tripping
Validate that the circuit breaker is capable of handling
the amp requirement of heater. The identification
label located on the power cord displays the heater’s
amperage requirement.
- All electrical connections must be made by qualified personnel and in accordance with all applicable
codes and regulations.
Examine heater and cord for any damage.
- SEBHB series: A NRTL (National Recognized Testing Laboratory) listed temperature controller with
a failure annunciation must be used to control the surface temperature of the blanket. The controller
must be approved for the area where it is located.
Check to see if there is a resistance reading between
power leads and the ground lead.
© 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
© 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
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M-4281/06
PN: 11661-01 Rev 0
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