Watts LFTB User Manual
For Commercial, Residential and Institutional Applications
ES-LFTB
Job Name
Job Location
Engineer
Approval
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LEAD FREE
*
Contractor
Approval
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Contractor’s P.O. No.
Representative
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Series LFTB
Center Back Entry Bimetal Thermometers
Dial Sizes: 11⁄2", 21⁄2", 3”, 4” (40, 65, 80, 100mm)
Series LFTB Center Back-Entry Bimetal Lead Free* Thermometers are used in commercial, residential, and institutional
HVAC applications. These thermometers feature zinc plated
steel cases, Kostil Polymer windows. They are furnished with
1
a
⁄2" NPT Lead Free* brass thermowells with set screw, and
bimetal spiral spring sensing elements. The LFTB features
Lead Free* construction to comply with Lead Free* installlation requirements. Series LFTB thermometers are available
in various temperature rating scales, probe lengths and dual
Temperature
Differs According to Model
Working Temperature Range: -22°F to 248°F
(-30°C to 120°C)
reading scale (°F, °C).
Materials
Features
• Zinc plated steel case
• Kostil polymer window
• Furnished with
1
⁄2" NPT Lead Free* brass
thermowells with set screw
• Bimetal spiral spring sensing element
Approvals
Certified by The Northern Certification Society of Italy
(Det Norske Verita Italia S.r.l.)
Case: Zinc plated steel
Window: Kostil polymer
Thermowell: Lead Free* Brass
Sensing Element: Bimetal spiral spring
*The wetted surface of this product contacted by consumable
water contains less than 0.25% of lead by weight.
a
Standards
ISO 9002 quality standard
Dimensions — Weights
Size Model Scale Probe Size diMenSionS Weight
in. ˚F C° in. mm in. mm in. mm in. mm in. mm in. mm lbs kgs
1
⁄21⁄2
1
⁄21⁄2
1
⁄21⁄2
1
⁄21⁄2
1
⁄21⁄2
1
⁄21⁄2
1
⁄21⁄2
1
⁄21⁄2
Watts product specifications in U.S. customary units and metric are approximate and are provided for reference only. For precise measurements, please contact Watts Technical Service. Watts
reserves the right to change or modify product design, construction, specifications, or materials without prior notice and without incurring any obligation to make such changes and modifications
on Watts products previously or subsequently sold.
1
LFTB-1
⁄2
-132-176
1
LFTB-2
⁄2
-232-140
1
LFTB-2
⁄2
-4 32-248
1
LFTB-2
⁄2
LFTB-3-2-144
LFTB-3-2 32-248
LFTB-3-4 32-140
LFTB-4-2 32-248
-232-248
32 – 176 0 – 80 1 25 11⁄2 40 19⁄16 40 13⁄8 353⁄8 107⁄16 11 0.4 0.18
32 – 140 0 – 60 2 51 21⁄2 63 23⁄8 60 115⁄16 49 1 257⁄16 11 0.4 0.18
32 – 248 0 – 120 3 76 21⁄2 63 23⁄8 60 115⁄16 49 1 257⁄16 11 0.4 0.18
32 – 248 0 – 120 4 102 21⁄2 63 43⁄8 111 315⁄16 100 215⁄16 757⁄16 11 0.4 0.18
-22 – 122 30 – 49 2 51 3 80 25⁄8 67 115⁄16 49 1 257⁄16 11 0.4 0.18
32 – 248 0 – 120 2 51 3 80 29⁄16 64 115⁄16 49 1 257⁄16 11 0.4 0.18
32 – 140 0 – 60 4 102 3 80 49⁄16 126 315⁄16 100 215⁄16 757⁄16 11 0.8 0.36
32 – 248 0 – 120 2 51 4 100 25⁄8 67 115⁄16 49 1 257⁄16 11 1.2 0.54
A B C D E
Center Back Entry
LFTB
LFTB
b
c
d
1
⁄2" MnPt
e
A Watts Water Technologies Company
ES-LFTB 1329 © 2013 Watts
USA: Tel: (978) 688-1811 • Fax: (978) 794-1848 • www.watts.com
Canada: Tel: (905) 332-4090 • Fax: (905) 332-7068 • www.watts.ca
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