UE B117 Technical specifications
IMT117-07
www.ueonline.com
117 Series
Temperature Switch
Types B117, E117 UNITED ELECTRIC
CONTROLS
Installation and Maintenance
Instructions
GENERAL
MISUSE OF THIS PRODUCT MAY CAUSE EXPLOSION AND PERSONAL
INJURY. THESE INSTRUCTIONS MUST BE THOROUGHLY READ AND
UNDERSTOOD BEFORE UNIT IS INSTALLED.
THIS EQUIPMENT IS SUITABLE FOR CLASS I, DIVISION 2,
GROUPS A,B,C,D; CLASS II, DIVISION 2, GROUPS F AND G; CLASS III;
OR NON-HAZARDOUS LOCATIONS ONLY.
THESE PRODUCTS DO NOT HAVE ANY FIELD REPLACEABLE PARTS.
ANY SUBSTITUTION OF COMPONENTS MAY IMPAIR SUITABILITY FOR
CLASS I, DIVISION 2
Types B117 (Immersion Stem)
The 117 Series temperature switch utilizes a liquid filled sensor which
expands or contracts against a bellows to detect a temperature change.
The response, at a pre-determined set point, actuates or deactuates a
SPDT or DPDT snap-acting switch, converting the temperature signal into an
electrical signal. Control set point is adjusted by turning an internal dial (see
adjustment - Part II).
Types E117 (Bulb & Capillary)
The 117 Series temperature switch utilizes a liquid-filled sensing bulb which
hydraulically transmits temperature change to a bellows. The response, at
a pre-determined set point, actuates or deactuates a SPDT or DPDT snap-
acting switch, converting the temperature signal into an electrical signal.
Control set point is adjusted by turning an internal dial (see adjustment -
Part II).
MAXIMUM TEMPERATURE: THE HIGHEST TEMPERATURE TO WHICH A
SENSING ELEMENT MAY BE OCCASIONALLY EXPOSED TO WITH-
OUT ADVERSELY AFFECTING SET POINT CALIBRATION AND REPEAT-
ABILITY. MAXIMUM TEMPERATURE STATED IN LITERATURE AND ON
NAMEPLATE MUST NEVER BE EXCEEDED, EVEN BY TEMPERATURE OVER-
SHOOTS IN THE SYSTEM. OCCASIONAL OPERATION OF UNIT UP TO MAX.
TEMPERATURE IS ACCEPTABLE (E.G., START-UP, TESTING). CONTINUOUS
OPERATION SHOULD BE RESTRICTED TO THE DESIGNATED ADJUSTABLE
RANGE.
Please refer to product bulletin for product specifications. Product bulletins
may be found at www.ueonline.com.
Part I - Installation Tools Needed
Adjustable Wrench
Flasthead screwdriver
Hammer (for alternate wire knockouts)
MOUNTING
WARNING: EXPLOSION HAZARD - DO NOT DISCONNECT EQUIPMENT
UNLESS POWER HAS BEEN SWITCHED OFF OR THE AREA IS KNOWN
TO BE NON-HAZARDOUS.
INSTALL UNIT WHERE SHOCK, VIBRATION AND TEMPERATURE FLUC-
TUATIONS ARE MINIMAL. DO NOT MOUNT UNIT IN AMBIENT TEMPER-
ATURES EXCEEDING PUBLISHED LIMITS. 100 SERIES TEMPERATURE
SWITCHES CAN BE MOUNTED IN ANY POSITION, PROVIDED THE
ELECTRICAL CONDUIT IS NOT FACING UP. ORIENT UNIT SO THAT
MOISTURE IS PREVENTED FROM ENTERING THE ENCLOSURE.
ALWAYS HOLD A WRENCH ON THE TEMPERATURE HOUSING HEX
WHEN MOUNTING UNIT. DO NOT TIGHTEN BY TURNING ENCLOSURE.
THIS WILL DAMAGE SENSOR AND WEAKEN SOLDERED OR WELDED
JOINTS.
Please read all instructional literature carefully and thoroughly before starting. Refer to the final page for the listing of Recommended
Practices, Liabilities and Warranties.
Mount the unit via the (2) 1/4” screw clearance holes on the enclosure (see
Mounting Dimensions).
For remote mounting, fully immerse the bulb and 6” capillary in the control
zone. For best control, it is generally desirable to place the bulb close to the
heating or cooling source in order to sense temperature fluctuations quickly.
Be sure to locate the bulb so it will not be exposed to temperature beyond
the instrument range limits.
WIRING
DISCONNECT ALL SUPPLY CIRCUITS BEFORE WIRING UNIT.
WIRE UNITS ACCORDING TO NATIONAL AND LOCAL ELECTRI-
CAL CODES. MAXIMUM RECOMMENDED WIRE SIZE IS 14 AWG.
THE RECOMMENDED TIGHTENING TORQUE FOR FIELD WIRING
TERMINALS IS 7 TO 17 IN-LBS.
ELECTRICAL RATINGS STATED IN LITERATURE AND ON NAMEPLATE
SHOULD NEVER BE EXCEEDED. OVERLOAD ON A SWITCH CAN
CAUSE FAILURE ON THE FIRST CYCLE.
Remove the two screws retaining the cover and cover gasket. A 1/2” NPT
conduit connection is provided on the left hand side of the enclosure. Two
cast-in 7/8” diameter knock outs for electrical conduits are located on the
side and back of enclosure (see dimensional drawings, opposite page).
These can easily be knocked out by placing a blade of a screwdriver in
groove and tapping sharply with a hammer. The terminal block terminals are
clearly labeled “Common”, “Normally Open” and “Normally Closed.” For units
supplied with DPDT, all terminals are labeled and the following color coding
applies.
Grounding screw and clamp (cast in symbol) are provided. Keep the wire as
short as possible to prevent interference with the plunger.
Part II - Adjustments
To change set point, turn dial and align with pointer.
Types B117 and E117 with dial knob controls are factory calibrated for
maximum accuracy at the midpoint of the scale.
Re-calibration
To re-calibrate, turn dial to desired set point. If the actual temperature and set point
temperature do not agree, turn the 3/16” hex fine adjustment screw to the left (clock-
wise) to raise and to the right (counter-clockwise) to lower temperature setting.
SPDT DPDT
SWT1 SWT2
Common Violet Violet Yellow
Normally Closed Black Black Red
Normally Open Blue Blue Orange
IMT117-07
All manuals and user guides at all-guides.com
IMT117-07
www.ueonline.com
Dimensions
Dimensional drawings for all models may be found at www.ueonline.com.
B117, E117
Dimension A
Model Inches mm
B117 (models 120-121)
Immersion Stem
9.38 238.1
E117 (models 2BSA-8BS)
Bulb & Capillary
8.69 220.6
CP09091000
RECOMMENDED PRACTICES AND WARNINGS
United Electric Controls Company recommends careful consideration
of the following factors when specifying and installing UE pressure and temper-
ature units. Before installing a unit, the Installation and Maintenance instruc-
tions provided with unit must be read and understood.
• To avoid damaging unit, proof pressure and maximum temperature limits
statedinliteratureandonnameplatesmustneverbeexceeded,evenbysurg-
esinthesystem.Operationoftheunituptomaximumpressureortempera-
ture is acceptable on a limited basis (e.g., start-up, testing) but continuous
operationmustberestrictedtothedesignatedadjustablerange. Excessive
cyclingatmaximumpressureortemperaturelimitscouldreducesensorlife.
• A back-up unit is necessary for applications where damage to a primary
unit could endanger life, limb or property. A high or low limit switch is nec-
essary for applications where a dangerous runaway condition could result.
• The adjustable range must be selected so that incorrect, inadvertent or
malicious setting at any range point cannot result in an unsafe system con-
dition.
• Install unit where shock, vibration and ambient temperature fluctuations
will not damage unit or affect operation. When applicable, orient unit so
that moisture does not enter the enclosure via the electrical connection.
When appropriate, this entry point should be sealed to prevent moisture
entry.
• Unitmustnotbealteredormodifiedaftershipment.ConsultUEifmodifi-
cation is necessary.
• Monitor operation to observe warning signs of possible damage to unit,
suchasdriftinsetpointorfaultydisplay.Checkunitimmediately.
• Preventative maintenance and periodic testing is necessary for critical
applications where damage could endanger property or personnel.
• Electrical ratings stated in literature and on nameplate must not be
exceeded.Overloadonaswitchcancausedamage,evenonthefirstcycle.
Wire unit according to local and national electrical codes, using wire size
recommended in installation sheet.
• Donotmountunitinambienttemp.exceedingpublishedlimits.
LIMITED WARRANTY
Seller warrants that the product hereby purchased is, upon delivery, free from
defectsinmaterialandworkmanshipandthatanysuchproductwhichisfound
tobedefectiveinsuchworkmanshipormaterialwillberepairedorreplacedby
Seller (Ex-works, Factory, Watertown, Massachusetts. INCOTERMS); provided,
however, that this warranty applies only to equipment found to be so defective
within a period of 24 months from the date of manufacture by the Seller. Seller
shall not be obligated under this warranty for alleged defects which examina-
tion discloses are due to tampering, misuse, neglect, improper storage, and in
any case where products are disassembled by anyone other than authorized
Seller’s representatives. EXCEPT FOR THE LIMITED WARRANTY OF REPAIR
AND REPLACEMENT STATED ABOVE, SELLER DISCLAIMS ALL WARRANTIES
WHATSOEVER WITH RESPECT TO THE PRODUCT, INCLUDING ALL IMPLIED
WARRANTIES OF MERCHANTABILITY OR FITNESS FOR ANY PARTICULAR
PURPOSE.
LIMITATION OF SELLER’S LIAbILITY
Seller’s liability to Buyer for any loss or claim, including liability incurred in
connection with (i) breach of any warranty whatsoever, expressed or implied,
(ii) a breach of contract, (iii) a negligent act or acts (or negligent failure to
act) committed by Seller, or (iv) an act for which strict liability will be inputted
to seller, is limited to the “limited warranty” of repair and/or replacement as
so stated in our warranty of product. In no event shall the Seller be liable for
any special, indirect, consequential or other damages of a like general nature,
including,withoutlimitation,lossofprofitsorproduction,orlossorexpensesof
any nature incurred by the buyer or any third party.
UE specifications subject to change without notice.
Temperature Sensors
Immersion Stem
Models 120-121
Bulb & Capillary
Models 2BSA - 8BS
180 Dexter Avenue, P.O. Box 9143
Watertown, MA 02471-9143 USA
Telephone: 617 926-1000 FAX: 617 926-2568
http://www.ueonline.com
UNITED ELECTRIC
CONTROLS
7-1/8
[181mm]
Ø3/8 [9.5 mm]
B*
3/16
(REF)
Ø5/32 (REF)
* USE DIMENSION “B”
FOR SEPERABLE WELL
INSTALLATIONS.
3/4-NPT THRU NEAR WALL ONLY
Ø7/8 KNOCKOUT ON OPPOSITE &
CENTERED ON REAR OF ENCLOSURE
Dimension B
Model Inches mm
2BSA 2-5/8 66.7
2BSB 2-5/8 66.7
3BS 2-1/8 54.0
4BS 6-3/4 171.5
5BS 5 127.0
8BS 3-1/4 82.6
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