Omega DHW User guide

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DHW SERIES

Drum Heaters and

TOTE-BH SERIES

Heated Insulating Blanket

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User’s Guide

DHW SERIES

TOTE-BH SERIES

MADE IN

Servicing North America:

U.S.A.: One Omega Drive, P.O. Box 4047

ISO 9001 Certified Stamford, CT 06907-0047

TEL: [phone]
FAX: [phone]
e-mail: [email protected]

Canada: 976 Bergar

Laval (Quebec) H7L 5A1, Canada
TEL: [phone]
FAX: [phone]
e-mail: [email protected]

For immediate technical or application assistance:

U.S.A. and Canada: Sales Service: 1-800-826-6342/1-800-TC-OMEGA

®

Customer Service: 1-800-622-2378/1-800-622-BEST

®

Engineering Service: 1-800-872-9436/1-800-USA-WHEN

®

Mexico: En Espan˜ ol: [phone]-7803

e-mail: [email protected]
FAX: [phone]
[email protected]

Servicing Europe:

Czech Republic: Frystatska 184, 733 01 Karviná, Czech Republic

TEL: [phone]
FAX: [phone]

Toll Free: 0800-1-66342
e-mail: [email protected]

Germany/Austria: Daimlerstrasse 26, D-75392 Deckenpfronn, Germany

TEL: [phone]
FAX: [phone]
Toll Free in Germany: 0800 639 7678
e-mail: [email protected]

United Kingdom: One Omega Drive, River Bend Technology Centre

ISO 9002 Certified Northbank, Irlam, Manchester

M44 5BD United Kingdom
TEL: [phone]
FAX: [phone]
Toll Free in United Kingdom: 0800-488-488
e-mail: [email protected]

OMEGAnet®Online Service Internet e-mail

omega.com [email protected]

It is the policy of OMEGA Engineering, Inc. to comply with all worldwide safety and EMC/EMI
regulations that apply. OMEGA is constantly pursuing certification of its products to the European New
Approach Directives. OMEGA will add the CE mark to every appropriate device upon certification.

The information contained in this document is believed to be correct, but OMEGA accepts no liability for any
errors it contains, and reserves the right to alter specifications without notice.
WARNING: These products are not designed for use in, and should not be used for, human applications.

WARNING

GENERAL

Drum Heaters are electrical resistance heaters in a flexible form that can be easily wrapped around metal
drums and tanks. They are constructed of silicone rubber reinforced fiberglass cloth laminated around Nickel
Alloy circuit to provide flexible, moisture-and-chemical resistant heat. They are designed for freeze protection,
melting of solids, viscosity control and maintaining drum contents at an elevated temperature.

APPLICATIONS GUIDELINES

FIRE/EXPLOSION HAZARD. Do not seal drums when applying heat. Drums are containers only and
not designed to be used as pressure vessels. Failure to heed this warning can cause severe personal
injury, death or substantial property damage. Bungs should be removed and clamps and gaskets left
off removing type drum tops.
FIRE HAZARD, Non-metal drums are easily damaged by heat. DH = Drum heaters are intended for
use on metal Drums only. Use XH models for plastic drum heating only.
FIRE HAZARD . Do not expose drum heaters to chemicals, acids, alkalis, oils, fluids or other
substances that could ignite or cause damage to the heater.

55 22 1/2 70.686

MODEL IDENTIFICATION

The part number stamped on the drum heater identifies several characteristics. Using the model identification
table. Identify the drum heater(s) you have purchased to ensure proper application.

EXAMPLE MODEL NUMBER

DRUM-DHW 55 115 TS

THERMOSTAT

VOLTAGE

115 OR 230

DRUM SIZE

GALLONS

DHW = METAL DRUMS

Voltage and Wattage are specified on the label. Refer to model identification if you are unclear about the
voltage and wattage specifications of your heater.

Heater contains no user serviceable parts.

1

General

DRUM SIZE DIAMETER CIRCUMFERENCE

GALLONS (IN.) (IN.)

115 Volts 230 Volts

Container To Fit Wattage Drum With With
in Gallons Diameter Type Thermostat With Out Thermostat With out

55 22 1/2" ± 1" 1500 Metal DHW-55-115-TS DHW-55-230-TS

INSTALLATION

1. Wrap and clamp heater around drum prior to switching on.

2. Pull on spring, at the same time, hold hook end of the heater against the drum.

3. Place a loop of the spring over the hook as shown.

4. Heater must not be clamped in dented areas of the drums.

5. Heater must be in full contact with the drum and below the level of liquid while in operation.

6. Do not bend heater sharply, as this may cause internal damage to the heater element.

7. Open drum to allow for expansion when heating.

8. Set thermostat to lowest setting.

9. Plug in heater.

10. Adjust thermostat to appropriate setting.

INSULATING BLANKETS

Insulating blankets increase heating efficiency and reduces operating cost. Bulk fiberglass insulation
is covered with silicone glass cloth on both sides. Velco fastening devices make installation easy. All
insulating blankets are available from stock.

FIRE HAZARD. When using blanket insulations, do not allow the drum to empty while heaters is
energized. Operating the heater with an empty drum will cause the heater to over heat and fail
presenting a potential for fire and personal injury or property damage.

WIRING

ELECTRIC SHOCK HAZARD. All applications of drum heaters must be grounded in accordance with
the National Electric Code (NEC) and local electric codes. All the Drum Heaters are manufactured
with wire mesh grounded grid and 3-prong cord for electrical protection

1. No special wiring is required to operate the Drum Heater. The electrical receptacle, including
GFCI (ground fault Circuit Interrupter), should be wired in accordance with the National Electrical
Code (NFC) and local codes by a qualified person.

2. Do not connect the heater to a higher voltage source than it is rated. Check the model number
stamped on the heater to confirm the voltage and amp draw.

2

Installation

FINGER
GRIP

HOOK
END

PLACE LOOP OF SPRING

OVER HOOK WHEN INSTALLING

DRUM EXTERIOR

WARNING

55-GAL Insulating Blanket COVER-IB-55 NONE
55-GAL Heated Insulating Blanket TOTE-BH-55-115-TS 1000

55-GAL Heated Insulating Blanket TOTE-BH-55-230-TS 1000

WARNING

OPERATION GUIDELINES

DRUM CONTENTS

1. If the liquid level in the drum is low, disconnect the heater.

2. Protect the heater from liquid spill over or the abuse.

3. If the drum is dented or empty, do not use the heater, as it may cause the heater to burn out prematurely.

ENVIRONMENT

Maximum operating temperature is 300°F and maximum exposure temperature is 400°F. Do not operate the
Heater under conditions that result in temperatures higher than the recommended maximum since excess
Temperatures cause premature heater failure.

THERMOSTAT

The thermostat range is 50°F to 425°F on the metal drum heaters and for the plastic drum heaters the range is
50°F to 160°F with an over temp thermostat that OA 175°F. To set the thermostat to the lowest temperature,
rotate the knob to the full counter – Clockwise position. Full clockwise position is the maximum temperature
setting.

MAINTENANCE

Keep heater free from chemicals, acids,alkalis, oils, fluids, or other substances that could ignite or cause
damage to the heater. Keep heater below the level of the contents inside the drum. Check that heater fits tight
against the drum or tank. Heater contains no user serviceable parts. In the event the heater stops working,
contact OMEGA Engineering, Inc. for replacement

3

Operation Guidelines

NOTES:

4

WARRANTY/DISCLAIMER

OMEGA ENGINEERING, INC. warrants this unit to be free of defects in materials and workmanship for a
period of 13 months from date of purchase. OMEGA’s WARRANTY adds an additional one (1) month
grace period to the normal one (1) year product warranty to cover handling and shipping time. This
ensures that OMEGA’s customers receive maximum coverage on each product.

If the unit malfunctions, it must be returned to the factory for evaluation. OMEGA’s Customer Service
Department will issue an Authorized Return (AR) number immediately upon phone or written request.
Upon examination by OMEGA, if the unit is found to be defective, it will be repaired or replaced at no
charge. OMEGA’s WARRANTY does not apply to defects resulting from any action of the purchaser,
including but not limited to mishandling, improper interfacing, operation outside of design limits,
improper repair, or unauthorized modification. This WARRANTY is VOID if the unit shows evidence of
having been tampered with or shows evidence of having been damaged as a result of excessive corrosion;
or current, heat, moisture or vibration; improper specification; misapplication; misuse or other operating
conditions outside of OMEGA’s control. Components in which wear is not warranted, include but are not
limited to contact points, fuses, and triacs.

OMEGA is pleased to offer suggestions on the use of its various products. However,
OMEGA neither assumes responsibility for any omissions or errors nor assumes liability for any
damages that result from the use of its products in accordance with information provided by
OMEGA, either verbal or written. OMEGA warrants only that the parts manufactured by the
company will be as specified and free of defects. OMEGA MAKES NO OTHER WARRANTIES OR
REPRESENTATIONS OF ANY KIND WHATSOEVER, EXPRESSED OR IMPLIED, EXCEPT THAT OF
TITLE, AND ALL IMPLIED WARRANTIES INCLUDING ANY WARRANTY OF MERCHANTABILITY
AND FITNESS FOR A PARTICULAR PURPOSE ARE HEREBY DISCLAIMED. LIMITATION OF
LIABILITY: The remedies of purchaser set forth herein are exclusive, and the total liability of
OMEGA with respect to this order, whether based on contract, warranty, negligence,
indemnification, strict liability or otherwise, shall not exceed the purchase price of the
component upon which liability is based. In no event shall OMEGA be liable for
consequential, incidental or special damages.

CONDITIONS: Equipment sold by OMEGA is not intended to be used, nor shall it be used: (1) as a “Basic
Component” under 10 CFR 21 (NRC), used in or with any nuclear installation or activity; or (2) in medical
applications or used on humans. Should any Product(s) be used in or with any nuclear installation or
activity, medical application, used on humans, or misused in any way, OMEGA assumes no responsibility
as set forth in our basic WARRANTY/DISCLAIMER language, and, additionally, purchaser will indemnify
OMEGA and hold OMEGA harmless from any liability or damage whatsoever arising out of the use of the
Product(s) in such a manner.

RETURN REQUESTS/INQUIRIES

Direct all warranty and repair requests/inquiries to the OMEGA Customer Service Department. BEFORE
RETURNING ANY PRODUCT(S) TO OMEGA, PURCHASER MUST OBTAIN AN AUTHORIZED RETURN
(AR) NUMBER FROM OMEGA’S CUSTOMER SERVICE DEPARTMENT (IN ORDER TO AVOID
PROCESSING DELAYS). The assigned AR number should then be marked on the outside of the return
package and on any correspondence.

The purchaser is responsible for shipping charges, freight, insurance and proper packaging to prevent
breakage in transit.

FOR W

ARRANTY RETURNS, please have the

following information available BEFORE
contacting OMEGA:

1. Purchase Order number under which the product
was PURCHASED,

2. Model and serial number of the product under
warranty, and

3. Repair instructions and/or specific problems
relative to the product.

FOR NON-WARRANTY REPAIRS,

consult OMEGA
for current repair charges. Have the following
information available BEFORE contacting OMEGA:

1. Purchase Order number to cover the COST

of the repair,

2. Model and serial number of the product, and

3. Repair instructions and/or specific problems

relative to the product.

OMEGA’s policy is to make running changes, not model changes, whenever an improvement is possible. This affords
our customers the latest in technology and engineering.

OMEGA is a registered trademark of OMEGA ENGINEERING, INC.
© Copyright 2007 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.

M4566/0807

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