Thermo Scientific BF51728 Quick start guide

April, 2020
Models: BF51728, BF51748, BF51766, BF51794
BF51828, BF51848, BF51866, BF51894
Installation and Operational Manual
330985H01 Rev. A
Thermo Scientific Lindberg/Blue M
Moldatherm 1100°C Box Furnace

©2020 Thermo Fisher Scientific Inc. All rights reserved.
Thermo Fisher Scientific Inc. provides this document to its customers with a product purchase to use in the product
operation. This document is copyright protected and any reproduction of the whole or any part of this document is strictly
prohibited, except with the written authorization of Thermo Fisher Scientific Inc.
The contents of this document are subject to change without notice. All technical information in this document is for
reference purposes only. System configurations and specifications in this document supersede all previous information
received by the purchaser.
Thermo Fisher Scientific Inc. makes no representations that this document is complete, accurate or error-free and
assumes no responsibility and will not be liable for any errors, omissions, damage or loss that might result from any use
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shall in no way govern or modify any Terms and Conditions of Sale, which Terms and Conditions of Sale shall govern all
conflicting information between the two documents.

1100°C Box Furnace 330985H01 | 1
Table of Contents
Table of Contents
Chapter 1 Safety Notes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-5
Explanation of Symbols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5
Safety Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6
Standards and Directives . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7
Electromagnetic Compatibility . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7
Chapter 2 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-11
Features and Benefits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-11
Intended Use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-12
Non-Intended Use. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-12
Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-13
Chapter 3 Pre-Installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-15
Unpacking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-15
Operating Conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-15
Environmental Conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-15
Atmosphere Systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-16
Chapter 4 Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-17
Lifting and Carrying . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-17
Transport . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-17
Location. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-17
Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-17
Hard-wiring of extra large models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-18
Mains Electrical/Thermocouple Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-19
Exhaust Vent . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-20
Exhaust Port Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-20
Atmosphere Inlet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-21
Atmosphere Inlet Port . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-21
Hearth Plate Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-22
Chapter 5 Start-Up. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-23
Initial Furnace Start-Up/Drying-Out Process . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-23
Door Seal Check. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-24
Door Seal Adjustment (if necessary). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-24
Chapter 6 Main Controller: 1x8 & 5x16 Segment Programmable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-27
Eurotherm 3216 Controller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-27
Operator Interface & HOME Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-28
Beacon Display and Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-28
Operator Buttons . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-29
Single Set Point Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-29
Alternate Set Point Selection (SP2). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-30
Set Point Ramp Rate. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-30
View or Change the Display Units. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-31
Auto Tuning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-32
Parameter List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-33
Offset Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-35
Alarms & Diagnostics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-36
Sensor Break & Loop Break Protection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-37
Over – Temperature Protection (OTP). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-37

Table of Contents
2 | 330985H01 1100°C Box Furnace
1-Program 8-Segment Controller Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-39
Soft Start Timer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-41
Delayed Switch On Timer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-42
5-Program 16-Segment Controller Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-47
Chapter 7 Communication Option. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8-53
Adapters - RS 485 to RS 232/USB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-53
Host Computer & Software . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8-53
Controller Parameters for Communication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8-54
Chapter 8 Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9-55
Cleaning and Decontamination . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9-55
Thermocouple Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9-56
Solid-State Relay Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9-57
Contactor Replacement. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9-58
Temperature Controller Replacement. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-59
Door Insulation Replacement. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9-59
Heating Unit Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-60
Chapter 9 Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10-63
Chapter 10 Wiring Diagram. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10-65
Chapter 11 Replacement Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11-69
Chapter 12 End of Life Care . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12-77
WEEE Compliance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12-78
Chapter 13 Contact Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13-79

1100°C Box Furnace 330985H01 | 1
Figures
Figures
Figure 1 1100°C Box Furnace ................................................................................................................. 2-11
Figure 2 Thermocouple ............................................................................................................................ 4-19
Figure 3 Exhaust Vents ............................................................................................................................ 4-20
Figure 4 Preventing Chimney Effect .......................................................................................................... 4-21
Figure 5 Atmosphere Inlet Port ................................................................................................................. 4-22
Figure 6 Thermocouple Replacement ....................................................................................................... 9-57
Figure 7 Solid Relay Replacement ............................................................................................................ 9-58
Figure 8 Door Insulation Replacement ...................................................................................................... 9-59
Figure 9 Heating Unit Replacement .......................................................................................................... 9-61
Figure 10 Wiring Diagram (BF51728, BF51828) ..................................................................................... 10-65
Figure 11 Wiring Diagram (BF51748, BF51766, BF51848 & BF51866) ................................................... 10-66
Figure 12 Wiring Diagram (BF51794, BF51894) ..................................................................................... 10-67

1100°C Box Furnace 330985H01 | 1-5
Safety Notes
Explanation of Symbols
DANGER : Indicates a hazardous situation which, if not avoided, will result in death
or serious injuries.
WARNING : Indicates a hazardous situation which, if not avoided, could result in
death or serious injuries.
CAUTION : Indicates a situation which, if not avoided, could result in damage to
equipment or property.
This symbol indicates surfaces which may become hot during use and may cause a burn
if touched with unprotected body parts.
WARNING : This symbol indicates situations where dangerous voltages exist and
potential for electrical shock is present.
This symbol indicates a need to use gloves during the indicated procedures.
If performing decontamination procedures, use chemically resistant gloves.
Use gloves during the daily usage.

| Safety Notes
Chapter 1
1-6 | 330985H01 1100°C Box Furnace
Safety Considerations
May be irritating to skin, eyes, and respiratory tract.
May be harmful if inhaled.
May contain or form cristobalite (crystalline silica) with use at high temperature
(above 871°C (1599.8°F)) which can cause severe respiratory disease.
Possible cancer hazard based on tests with laboratory animals. Animal studies to
date are inconclusive. No human exposure studies with this product have been
reported.
DANGER :
Do not modify or use equipment in a manner other than expressly intended.
Modification of equipment other than that for which it is explicitly designed could cause
severe injury or death. Any customer after-market retrofit violates the warranty of the
equipment.
Do not modify or disconnect any safety features provided. Disconnection of the unit
safety features could allow the unit to become overheated and start on fire, causing
personal injury or death, product and property damage.
Do not use components or materials not specifically designed for this equipment.
Failure to comply with this precaution could result in damage to equipment used or the
furnace and may create an overheat situation. Also, do not use anything other than
OEM exact replacement equipment and parts. Not using OEM replacement parts could
cause faulty instrumentation readings, inoperable equipment, or temperature
overshoot. Both situations may cause personal injury or death, product, and property
damage.
Before using, user shall determine the suitability and integrity of the product for the
intended use and that the unit has not been altered in any way. Misapplication may
compromise the safety of the end user or the life of the product.
WARNING : Use appropriate Personal Protective Equipment (PPE) per local
protocols.
CAUTION : This product contains refractory ceramic fiber or other refractories which
can result in the following:
WARNING : This product can expose you to chemicals including arsenic, which is
known to the state of California to cause cancer. For more information go to
www.P65Warnings.ca.gov.
WARNING : Before maintaining this equipment, read the applicable SDS (Safety
Data Sheets). SDS is provided with unit.

1100°C Box Furnace 330985H01 | 1-7
Safety Notes | Chapter 1
Standards and Directives
The box furnaces complies with the following standards and guidelines:
European Union
The European voltage models of this product meet all the applicable
requirements of the European Directives and therefore display the CE
Marking. The most current EU Declaration of Conformity may be obtained
from the manufacturer.
Product Safety
This product family has been tested to applicable product standards by UL a Nationally
Recognized Test Laboratory (NRTL).
Electromagnetic Compatibility
FCC Statement (USA)
Any changes or modifications not expressly approved by the party
responsible for compliance could void the user’s authority to operate the
equipment.
WARNING : When installing, maintaining, or removing the fiberglass insulation, the
following precautions will minimize airborne dust and fiber:
Keep personnel not involved in the installation out of the area.
Use a good vacuum to clean area and equipment. Use a dust suppressant if
sweeping is necessary. Do not use compressed air.
Use a disposable mask suitable for nuisance dust.
Wear long sleeve clothing, gloves, hat, and eye protection to minimize skin and
eye contact. Do not wear contact lenses.
Thoroughly wash self after work is complete.
Launder work clothing separate from other clothes and thoroughly clean
laundering equipment after use. If clothing contains a large amount of dust and/or
fiber, dispose of rather than clean.
Promptly place used ceramic fiber parts and dust in plastic bags and dispose of
properly.

| Safety Notes
Chapter 1
1-8 | 330985H01 1100°C Box Furnace
NOTE: This equipment has been tested and found to comply with the limits for a Class A
digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide
reasonable protection against harmful interference when the equipment is operated in a
commercial environment. This equipment generates, uses, and can radiate radio
frequency energy and, if not installed and used in accordance with the instruction manual,
may cause harmful interference to radio communications. Operation of this equipment in
a residential area is likely to cause harmful interference in which case the user will be
required to correct the interference at his own expense.
Canadian ISED IC Notice
This ISM digital apparatus complies with Canadian ICES-001.
Cet appareil ISM est conforme á la norme NMB-001 du Canada
Evaluation of Chemicals - Regulations and
Directives
Proposition 65 - California
REACH - Europe
Thermofisher Scientific are committed to meeting all compliance obligations to evaluate,
communicate, and register any Substances of Very High Concern (SVHC), and finding
alternates where appropriate.
RoHS - Europe
Thermofisher Scientific are determined to reduce the impact on the environment, and so
can declare that this product fully complies with the European Parliament’s RoHS2
(Restriction of Hazardous Substances) Directive 2011/65/EU, with respect to all the
following substances:
Lead (0.1 %)
Mercury (0.1 %)
Cadmium (0.01 %)
Hexavalent chromium (0.1 %)
Polybrominated biphenyls (PBB) (0.1 %)
Polybrominated diphenyl ethers (PBDE) (0.1 %)
WARNING : Cancer and Reproductive Harm - www.P65Warnings.ca.gov

1100°C Box Furnace 330985H01 | 1-9
Safety Notes | Chapter 1
Our compliance is witnessed by written declaration from our suppliers and/or component
testing. This confirms that any potential trace contamination levels of the substances
listed above are below the maximum level set by the latest regulations or are exempt due
to their application.
RoHS – China
This product complies with the requirements of the legislative act Administration on the
Control of Pollution Caused by Electronic Information Products (ACPEIP). The following
label of conformance, may be found on the product:

| Safety Notes
Chapter 1
1-10 | 330985H01 1100°C Box Furnace

1100°C Box Furnace 330985H01 | 2-11
Introduction
Figure 1 1100°C Box Furnace
Thermo Fisher Scientific 1100°C box furnace series is a family of ultra lightweight,
economical, laboratory box furnaces. The low thermal mass Moldatherm®
insulation/heating element provides fast duty cycles, energy conservation, and efficient
programming. Refer to Table 1 “1100°C Moldatherm Box Furnace Series” for
specifications.
Features and Benefits
Controlled heat-up rate eliminates thermal shock to materials.
Quick heat-up and cool-down rates.
Four chamber sizes.
Energy efficient Moldatherm insulation suitable for high interior-exterior temperature
differential. The unit is rated for a maximum operating temperature of 1100°C.
Resists attack from most corrosive agents and can be used in atmospheres other
than air.
Side-hinge door for convenient operation.
Air vent, standard.
Atmosphere inlet port standard.

| Introduction
2-12 | 330985H01 1100°C Box Furnace
Chapter 2
Digital instrumentation for precise temperature setpoint and display. Microprocessor
capable of automatically optimizes control parameters during furnace operation.
Main power ON/OFF switch on control panel.
Safety interlock switch automatically interrupts power to heating element when door
is opened. This feature protects heating element and eliminates operator's exposure
to electrical shock.
Type K thermocouple.
Communication option.
Intended Use
This furnace is intended as a general purpose laboratory, ashing, and heat treating
furnace at 1100°C for continuous (over 3 hours) or intermittent (under 3 hours) use, for
light industrial and laboratory applications only. The furnace is designed for thermal
technology applications in laboratories, such as those found in manufacturing trades and
industry, schools, universities and biology. It is used for ageing, analysis, tempering,
decomposing, baking, annealing, hardening, soldering, oxidizing, reducing, incineration
and preheating.
Non-Intended Use
This furnace is not intended for the following:
To heat up food.
For drying or heat treatment of substances which release gases or vapors into the
atmosphere that are flammable or dangerously explosive when mixed with air.
This furnace is equally unsuitable for the heat treatment of combustible dusts and
fibrous materials.

1100°C Box Furnace 330985H01 | 2-13
Introduction | Chapter 2
Specifications
Table 1 1100°C Moldatherm Box Furnace Series
*Unit is supplied with Cordset per North American (NEMA 5-20P) Plug requirements
**Unit is supplied with two Cordsets per North American (NEMA 6-15P Plug) and
European (EU 1-16P Plug) requirements
***Unit is supplied with Cordset per China requirements (Type 3112 Plug).
#Unit includes male and female RS 485 Digital Communications DB-9 ports.
Model BF51748 A-1*
BF51748COMA-1#*
BF51748C-1**
BF51748KC-1***
BF51766 A-1*
BF51766COMA-1#*
BF51766C-1**
BF51766KC-1*** BF51794C-1** BF51728C-1
BF51728RHDC-1
Capacity 2 L
(0.07 cu.ft.)
2 L
(0.07 cu.ft.)
5.3 L
(0.19 cu.ft.)
5.3 L
(0.19 cu.ft.)
18.4 L
(0.65 cu.ft.)
42.5 L
(1.5 cu.ft.)
Temp.
Range
100°C to 1100°C 100°C to 1100°C 100°C to 1100°C 100°C to 1100°C 100°C to 1100°C 100°C to 1100°C
Interior
(D x W x H)
20.3 x 10.2 x 10.2 cm
(4 x 8 x 4 in.)
20.3 x 10.2 x 10.2 cm
(4 x 8 x 4 in.)
22.9 x 15.2 x 15.2 cm
(9 x 6 x 6 in.)
22.9 x 15.2 x 15.2 cm
(9 x 6 x 6 in.)
35.6 x 22.9 x 22.9 cm
(14 x 9 x 9 in.)
45.7 x 30.5 x 30.5 cm
(18 x 12 x 12 in.)
Exterior
(L x W x H)
50.8 x 38.1 x 44.4 cm
(20 x 15 x 17.5 in.)
50.8 x 38.1 x 44.4 cm
(20 x 15 x 17.5 in.)
53.3 x 43.1 x 54.6 cm
(21 x 17 x 21.5 in.)
53.3 x 43.1 x 54.6 cm
(21 x 17 x 21.5 in.)
65.4 x 53.3 x 66 cm
(25.75 x 21 x 26 in.)
76.2 x 60.9 x 71.1 cm
(30 x 24 x 28 in.)
Control 1 program with 8 segments - digital PID control with dual display (referenced as “3216c” in this manual)
Electrical 120 VAC,
50/60 Hz, 1800 W
1 Phase, 15 A
208/240 VAC,
50/60 Hz, 1800 W
1 Phase, 7.5 A
120 VAC,
50/ 60 Hz, 1800 W
1 Phase, 15 A
208/240 VAC,
50/60Hz, 1800 W
1 Phase, 7.5 A
208/240 V,
50/60 Hz, 3500 W,
14.6 A
208/240 V,
50/60 Hz, 5600 W,
23.3 A
Shipping
Weight
25 kg
(55 Lb.)
25 kg
(55 Lb.)
50 kg
(110 Lb.)
50 kg
(110 Lb.)
59 kg
(130 Lb.)
84 kg
(185 Lb.)
Plug
Type
*** / ***/
**
*** / ***/
**
** / ** No plug, no cable,
see wiring on page
4-17
Model BF51848 A-1*
BF51848COMA-1#*
BF51848C-1**
BF51848KC-1***
BF51866 A-1*
BF51866COMA-1#*
BF51866C-1**
BF51866KC-1*** BF51894C-1** BF51828C-1 BF51828RHDC-1
Capacity 2 L
(0.07 cu.ft.)
2 L
(0.07 cu.ft.)
5.3 L
(0.19 cu.ft.)
5.3 L
(0.19 cu.ft.)
18.4 L
(0.65 cu.ft.)
42.5 L
(1.5 cu.ft.)
Temp.
Range
100°C to 1100°C 100°C to 1100°C 100°C to 1100°C 100°C to 1100°C 100°C to 1100°C 100°C to 1100°C
Interior
(D x W x H)
20.3 x 10.2 x 10.2 cm
(4 x 8 x 4 in.)
20.3 x 10.2 x 10.2 cm
(4 x 8 x 4 in.)
22.9 x 15.2 x 15.2 cm
(9 x 6 x 6 in.)
22.9 x 15.2 x 15.2 cm
(9 x 6 x 6 in.)
35.6 x 22.9 x 22.9 cm
(14 x 9 x 9 in.)
45.7 x 30.5 x 30.5 cm
(18 x 12 x 12 in.)
Exterior
(L x W x H)
50.8 x 38.1 x 44.4 cm
(20 x 15 x 17.5 in.)
50.8 x 38.1 x 44.4 cm
(20 x 15 x 17.5 in.)
53.3 x 43.1 x 54.6 cm
(21 x 17 x 21.5 in.)
53.3 x 43.1 x 54.6 cm
(21 x 17 x 21.5 in.)
65.4 x 53.3 x 66 cm
(25.75 x 21 x 26 in.)
76.2 x 60.9 x 71.1 cm
(30 x 24 x 28 in.)
Control 5 programs with 16 segments each - digital PID control with dual display (referenced as “3216p” in this manual)
Electrical 120 VAC,
50/60 Hz, 1800 W
1 Phase, 15 A
208/240 VAC,
50/60 Hz, 1800 W
1 Phase, 7.5 A
120 VAC,
50/ 60 Hz, 1800 W
1 Phase, 15 A
208/240 VAC,
50/60Hz, 1800 W
1 Phase, 7.5 A
208/240 V,
50/60 Hz, 3500 W,
14.6 A
208/240 V,
50/60 Hz, 5600 W,
23.3 A
Shipping
Weight
25 kg
(55 Lb.)
25 kg
(55 Lb.)
50 kg
(110 Lb.)
50 kg
(110 Lb.)
59 kg
(130 Lb.)
84 kg
(185 Lb.)
Plug
Type
*** / *** /
**
*** / *** /
**
** / ** Requires hardwiring by
a qualified technician;
no wire and plug
included; please refer to
wiring instructions on
page 4-17

| Introduction
2-14 | 330985H01 1100°C Box Furnace
Chapter 2

1100°C Box Furnace 330985H01 | 3-15
Pre-Installation
Unpacking
Carefully unpack and inspect the unit and all accessories for damage, if you find any
damage, keep the packing materials and immediately report the damage to the carrier.
We will assist you with your claim, if requested. Do not return goods to Thermo Fisher
Scientific without written authorization. When submitting a claim for shipping damage,
request that the carrier inspect the shipping container and equipment.
Inside the furnace cabinet is a bag containing:
Hearth Plate
Gas Inlet Tube
Exhaust Port Cover
Power Cord (except 42.5L units)
User Manual, SDS, User Information Instructions*
Operating Conditions
High concentrations of sulfates, chlorides, fluorides, alkalis, and V2O5can have corrosive
effects on the ceramic fiber. Contact Thermo Fisher Scientific for additional information
about the effects of specific atmospheres on furnace performance.
With prolonged use, hairline cracks can develop in the insulation materials. These minor
cracks will not affect the furnace's performance. It is recommended to turn off the furnace
completely when not in use. The heating unit is not damaged by rapid heating and cooling
cycles.
Environmental Conditions
*NOTE May be contained on optional USB thumb drive.
Operating The recommended ambient temperature is 17°C to 27°C
(62.6°F to 80.6°F); 20% to 80% relative humidity, non-condensing.
Installation Category II (over-voltage) in accordance with IEC 664.
Pollution degree 2 in accordance with IEC 664. Do not exceed
ambient temperature of 40°C (104°F).
Altitude Limit 2,000 meters (6561.68 feet).
Storage -25°C (-13°F) to 65°C (149°F); 20% to 80% relative humidity.

| Pre-Installation
3-16 | 330985H01 1100°C Box Furnace
Chapter 3
Atmosphere Systems
The 1100°C box furnace series are not designed for use with combustible or inert
atmospheres requiring an air tight chamber. If an exhaust port is used, the furnace should
not be located in an enclosed area without proper ventilation.
WARNING : Do not use combustible gases directly in this furnace. Process gases
must always be contained in a separate tube.
CAUTION : Avoid combustible products which generate toxic or hazardous vapor or
fumes. Work should only be done in a properly vented environment.

1100°C Box Furnace 330985H01 | 4-17
Installation
Lifting and Carrying
Transport
1. For transport, do not lift the device using the doors or components attached to the
device (e.g. control box on rear panel) as lift points.
2. Lift at the bottom sides of the furnace with NIOSH rated straps and/or using
appropriate number of personnel per local safety policies and regulations.
Location
Install the furnace in a level area free from vibration. To permit proper air flow, leave at
least 3" (7.62 cm) of space on all sides of the unit and 12" (30.48 cm) above the unit.
Wiring
For detailed wiring information, refer to:
Figure 10 “Wiring Diagram (BF51728, BF51828)”,
Figure 11 “Wiring Diagram (BF51748, BF51766, BF51848 & BF51866)” or
Figure 12 “Wiring Diagram (BF51794, BF51894)”.
CAUTION : Be sure ambient temperature does not exceed 40°C (104°F). Ambient
above this level may result in damage to the controller. The recommended ambient
temperature is 17°C to 27°C (62.6°F to 80.6°F).
CAUTION : Allow at least 3" (7.62 cm) of space between the furnace, at least
12" (30.48 cm) above the furnace and any combustible surface. This permits the heat
from the furnace case to escape so as not to create a possible fire hazard.
WARNING : To avoid electrical shock, this furnace must be installed by a competent
electrician who ensures compatibility among furnace specification, power source and
ground code requirements.
CAUTION : Heavy loads. Lift with care!
1. To avoid injury through physical strain, such as strain trauma and slipped discs, do
not attempt to lift the furnace alone.
2. To avoid injury through dropped loads, wear Personal Protective Equipment (PPE)
per local protocols, such as safety shoes, when lifting the furnace.
3. To avoid crushing your fingers or hands (particularly in a closing door) or damaging
the furnace, do not use any other lift points than the bottom sides of the furnace.
WARNING : Detachable Cordsets cannot be replaced with inadequately rated cords.

| Installation
4-18 | 330985H01 1100°C Box Furnace
Chapter 4
120 VAC Mains Electrical
Models operate on detachable 120 VAC grounded plug and cord set. The units are
completely pre-wired ready for operation.
208-240 VAC Mains Electrical (excluding BF51728 and BF518728)
Models include a detachable 240 V grounded plug and cord set. The units are completely
pre-wired and ready for operation.
A furnace wired for 240 VAC operation can also operate on 208 VAC. 208 VAC heatup
and recovery times may be longer than 240 VAC.
208-240 VAC Mains Electrical (BF51728 and
BF51828 Only)
The BF51728 and BF51828 are 208-240 VAC furnaces and do not include a 240 VAC
grounded plug and cord set.
Furnace installation requires L1, L2, and ground wire (not provided). The required wire
size is 10 AWG for 23.3 Amps @ 240 V.
To connect the furnace to the power source, complete the following steps:
1. Determine the length of wire needed to connect the furnace to the power source.
2. Label the power wires Line 1 and Line 2 and label the ground wire Ground.
3. Remove the two outlet box cover screws. Remove the outlet box cover.
4. Use appropriate conduit and clamps for the service wire. Use wire nuts to connect
the wires to the appropriate lead wires:
5. Check that all electrical connections are secure.
6. Place the back panel on the furnace and secure with the corner screws.
NOTE Electrical installation must be performed by a qualified electrician.
Consult local electrical codes for proper sizing of power and control wiring.
Wire Label
Line 1 L1
Line 2 L2
Ground GND
NOTE Unit supplied with 7/8" Hole covered with a bushing that is sized for 1/2"
Conduit / connections per electrical standards. Utilize strain reliefs as needed.
CAUTION : Failure to check thermocouple wiring connections before initial start up
could result in damage to the furnace.

1100°C Box Furnace 330985H01 | 4-19
Installation | Chapter 4
Mains Electrical/Thermocouple Check
Before initial start up, inspect the furnace's wiring connections:
1. Remove the corner screws on the back panel of the furnace and detach the back
panel.
2. Check that the thermocouple is securely mounted and undamaged.
3. Check the thermocouple wiring connections. Refer to Figure 2 “Thermocouple”. Red
is always negative.
4. Check that all electrical connections are secure. Visually check that the door properly
activates the power interrupt switch near the front of the furnace.
Figure 2 Thermocouple
5. Replace the back panel on the furnace and secure with the corner screws.
6. Connect Mains electrical to facility ground outlet meeting the unit specifications
found on the data tag.
CAUTION : Failure to check thermocouple wiring connections before Initial start up
could result in damage to the furnace.