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Immersion Wells and Compression Fittings
FOR TEMPERATURE CONTROLLERS
121371B
IMMERSION WELL
107324A
ELEMENT
HOLDER
APPLICATION
Immersion wells, compression fittings and element holders
are used with Aquastat® Temperature Controllers to hold the
temperature sensing bulb in the controlled medium.
Immersion wells and compression fittings also prevent
leakage of the controlled medium.
112632AA
IMMERSION WELL
104484A
COMPRESSION FITTING
FEATURES
• Immersion wells and compression fittings are
available to fit a 1/2-14 or 3/4-14 NPT tapping with
a range of insulation depths.
• Immersion wells and compression fittings are
available in a variety of lengths and diameters.
• Immersion wells and compression fittings are
available in a variety of materials, to suit the
application. Materials include: brass, copper,
stainless steel, mild steel or Monel.
• Element holders support the capillary and bulb
or an averaging element in duct applications.
• Bulb shields protect the sensing bulb from sun
and weather with the bulb installed outdoors.
• Accessories, including mounting clips, heat-
conductive compound, waste nuts, a pipe strap
and a well adapter, are available for mounting
sensing bulbs in various applications.
• Immersion wells allow heat transfer while
protecting the sensing bulb from contact with the
controlled medium.
• Immersion wells permit removal of the sensing
bulb for testing or replacement without draining
the system.
• Compression fittings seal the boiler and allow
bulb insertion directly into the controlled
medium.
Application ........................................................................
Features ...........................................................................
Specifications ...................................................................
Ordering Information ........................................................
General Information ..........................................................
Installation ........................................................................
Checkout .......................................................................... 13
Cross Reference .............................................................. 13
PRODUCT DATA
Contents
1
1
2
2
7
8
68-0040-04
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Summary of Contents for Honeywell 121371B
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Page 1: Table Of Contents
PRODUCT DATA FEATURES • Immersion wells and compression fittings are available to fit a 1/2-14 or 3/4-14 NPT tapping with 121371B a range of insulation depths. IMMERSION WELL • Immersion wells and compression fittings are available in a variety of lengths and diameters. -
Page 2: Specifications
If you have additional questions, need further information, or would like to comment on our products or services, please write or phone: 1. Your local Honeywell Automation and Control Products Sales Office (check white pages of your phone directory). 2. Honeywell Customer Care... - Page 3 IMMERSION WELLS AND COMPRESSION FITTINGS 121371A-S WELL SPUD. FITS 1/2 OR 1/8-1/2 in. OF THREADS MAY 3/4-14 NPT TAPPED HOLE EXTEND INTO CONTROLLED MEDIUM 123869A-123872A (LESS MOUNTING CLAMP) MOUNTING CLAMP WELL SHELL. MOUNTING INSULATION INSERTION/MAX NOTE: 123870F HAS DUAL DEPTH BULB LENGTH FLANGE DIAMETER WELL SHELL.
- Page 4 123869B 4-1/4 1-1/2 112721 Spring Clip 112622AA 4-1/4 4-1/2 112721 Spring Clip 112626AA 1-1/2 5/64 121371 Mounting Clamp 121371B — — 123870A 5/64 121371 Mounting Clamp 121371M 121371 Mounting Clamp, plastic sleeve 123171N — — 123871A Plastic sleeve on well tube...
- Page 5 IMMERSION WELLS AND COMPRESSION FITTINGS Table 3. Capillary Compression Fittings. Material Spud Maximum Bulb Diameter Insulation Depth Capillary Diameter Part Number Brass 1/2-14 NPT 1/2 in. 1-5/16 in. 5/64 in. 104484A 1/8 in. 7617M 1-1/2 in. 5/64 in. 104484C 2 in. 5/64 in.
- Page 6 IMMERSION WELLS AND COMPRESSION FITTINGS Table 5. Immersion Well Accessories . Size in in. Description Application (except where noted) Part Number Mounting clamp Holds capillary in place on 1/2 or 3/4 in. well spud; 5/64 123869A-123872A; capillary 122554A,B; 12255A,B,D,E; and 138134B-F Immersion Wells.
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Page 7: General Information
If the bulb fits loosely, fill the space between the shell and bulb with heat-conductive Material Selection compound to ensure maximum heat transfer. Many Honeywell The immersion well material must conduct heat readily and temperature controllers ship with heat-conductive compound;... -
Page 8: Installation
DIRECT INSERTION APPLICATIONS Most Honeywell direct insertion controllers include provision for NOTE: To minimize heat loss through the fitting, use a waste clamping the controller case on the immersion well spud. This nut and compression fitting. - Page 9 A tube of NOTE: Make sure the bulb remains bottomed in the well. heat-conductive compound ships with Honeywell TRADELINE® Aquastat Controllers. The compound is also available as an accessory. See Table 5. Use the following procedure when installing the compound: 68-0040—04...
- Page 10 IMMERSION WELLS AND COMPRESSION FITTINGS Element Holders Use element holders to mount air temperature sensors in a FITTING (INCLUDING WELL) APPROX. 3-3/8 IN. INSERTION LENGTH duct. Locate the sensing element where air at representative temperatures can circulate around it. In a plenum application, locate the element far enough from the combustion chamber to avoid the effect of direct radiation.
- Page 11 IMMERSION WELLS AND COMPRESSION FITTINGS ELEMENT THERMOMETER CAPILLARY BULB 3 - 1 TUBING ( 8 3 1 - 3 ( 3 5 ( 3 5 GROMMET 3 - 1 1 - 5 ( 8 3 ( 4 1 ADJUSTABLE SPRING CLIPS (2) CONTROLLER BULB 2 - 3...
- Page 12 IMMERSION WELLS AND COMPRESSION FITTINGS Bulb Shields Mount the bulb on the pipe as follows: A bulb mounted outdoors requires protection of a bulb shield. CAUTION 1. Expose the bulb to representative air temperature but not direct sunlight. Significant Calibration Shift Hazard. 2.
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Page 13: Checkout
Table 7. Wells With and Without Mounting Clamp. 4. Ensure proper operation by observing the system 121371 Part Number (With Part Number through one complete cycle. Clamp) (Less Clamp) 121371A 123869A 121371B 123870A 121371M 123871A 121371N 123871B 121371P None 121371Q... - Page 14 IMMERSION WELLS AND COMPRESSION FITTINGS Table 8. Cross Reference . Old Part Replacement Part Number Notes Description Number 121371G Immersion well. Brass, 1/2-14 NPT, 1-1/2 in. None — insulation, 6-1/2 in. insertion, includes 121371 mounting clamp. 121371N Immersion well. Copper, 3/4-14 NPT, 3 in. 123871B No mounting insulation, 3 in.
- Page 15 IMMERSION WELLS AND COMPRESSION FITTINGS 68-0040—04...
- Page 16 IMMERSION WELLS AND COMPRESSION FITTINGS By using this Honeywell literature, you agree that Honeywell will have no liability for any damages arising out of your use or modification to, the literature. You will defend and indemnify Honeywell, its affiliates and subsidiaries, from and against any liability, cost, or damages, including attorneys’...