Honeywell 121371B, 104484A, 107324A User Manual
Immersion Wells and Compression Fittings
IMMERSION WELL
112632AA
IMMERSION WELL
107324A
ELEMENT
HOLDER
104484A
COMPRESSION FITTING
121371B
FOR TEMPERATURE CONTROLLERS
PRODUCT DATA
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, heatconductive 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
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.
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.
Contents
Application ........................................................................ 1
Features ........................................................................... 1
Specifications ................................................................... 2
Ordering Information ........................................................ 2
General Information .......................................................... 7
Installation ........................................................................ 8
Checkout .......................................................................... 13
Cross Reference .............................................................. 13
68-0040-04
IMMERSION WELLS AND COMPRESSION FITTINGS
SPECIFICATIONS
Models:
Immersion Wells: Allow heat transfer while protecting sensing
bulb from controlled medium and seal off tapping to permit
bulb removal without draining the boiler. Available in
copper, stainless steel, mild steel and Monel. See Table 1
for copper. See Table 2 for stainless steel, mild steel and
Monel.
Compression Fittings: Allow bulb insertion directly into the
controlled medium with boiler draining. Can also be used to
provide positive seal in duct applications. Available in brass
and stainless steel. See Table 3.
Element Holders: Support bulb and capillary or averaging
element in a duct. See Table 4.
Dimensions:
See Tables 1, 2, 3 and 4, and Fig. 1 and 2.
Temperature Ratings:
IMPORTANT
Do not exceed the maximum temperature rating of
the controller element.
Wells:
Copper: 300°F (149°C) maximum.
Other Materials: Maximum temperature rating limits of the
controller sensing bulb and capillary.
Capillary Compression Fittings: 250°F (121°C) maximum.
Element Holders:
311266D Bulb Holder: -40°F to +100°F (-40°C to +38°C).
Other Element Holders: Maximum temperature rating limits
of the controller sensing bulb and capillary.
Maximum Pressure Ratings:
Copper Wells: 255 psi (1758 kPa) at 300°F (149°C).
Other Wells: 1500 psi (10,342 kPa) at 700°F (371°C).
Capillary Compression Fittings:
Water: 50 psi (345 kPa)
Air: 15 psi (103 kPa).
Accessories:
See Tables 5 and 6.
PACKING
NUT
TUBING
SLOTTED
BRASS
WASHERS (4)
COMPOSITION DISK
INSULATION DEPTH
FITTING FOR 1/2
OR 3/4-14 NPT
TAPPED HOLE
MINIMUM
INSERTION LENGTH
APPROXIMATELY 4-3/4 IN.
M17260
Fig. 1. Capillary compression fitting
dimensions and components.
ORDERING INFORMATION
When purchasing replacement and modernization products from your TRADELINE® wholesaler or distributor, refer to the
TRADELINE® Catalog or price sheets for complete ordering number.
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
1885 Douglas Drive North
Minneapolis, Minnesota 55422-4386
In Canada—Honeywell Limited/Honeywell Limitée, 35 Dynamic Drive, Toronto, Ontario M1V 4Z9.
International Sales and Service Offices in all principal cities of the world. Manufacturing in Australia, Canada, Finland, France,
Germany, Japan, Mexico, Netherlands, Spain, Taiwan, United Kingdom, U.S.A.
68-0040—04 2
IMMERSION WELLS AND COMPRESSION FITTINGS
WELL SPUD. FITS 1/2 OR
3/4-14 NPT TAPPED HOLE
MOUNTING
CLAMP
MOUNTING
FLANGE
MOUNTING
FLANGE
MOUNTING
FLANGE
SET SCREW
1/8-1/2 in. OF THREADS MAY
EXTEND INTO CONTROLLED MEDIUM
WELL SHELL.
INSULATION
DEPTH
FITS 1/2 OR 3/4-14 NPT TAPPED HOLE
INSULATION DEPTH
FITS 1/2 OR 3/4-14 NPT TAPPED HOLE
INSULATION DEPTH
INSULATION
DEPTH
INSERTION/MAX
BULB LENGTH
FITS 1/2 OR 3/4-14 NPT
TAPPED HOLE
INSERTION/MAX
BULB LENGTH
(LESS MOUNTING CLAMP)
NOTE: 123870F HAS DUAL
DIAMETER WELL SHELL.
INSERTION/MAX
BULB LENGTH
DUAL DIAMETER WELL
INSERTION/MAX
BULB LENGTH
121371A-S
123869A-123872A
122555A,B
122555E
123732AA
FITS 1/2 OR 3/4-14 NPT TAPPED HOLE
MOUNTING
FLANGE
MOUNTING
FLANGE
FITS 1/2 OR
3/4-14 NPT
TAPPED HOLE
SPRING
CLIP
INSULATION DEPTH
INSULATION DEPTH
INSULATION
DEPTH
1/8-1/2 in. OF THREADS MAY
EXTEND INTO CONTROLLED MEDIUM
INSERTION/MAX BULB LENGTH
FITS 1/2 OR 3/4-14 NPT
TAPPED HOLE
INSERTION/MAX
BULB LENGTH
WELL SHELL
INSERTION/MAX
BULB LENGTH
Fig. 2. Immersion well dimensions and components.
138134B
DUAL DIAMETER WELL
112620AA-112639AE
138134E
M17259A
3 68-0040—04
IMMERSION WELLS AND COMPRESSION FITTINGS
Table 1. Copper Immersion Wells.
Spud in
in. x 14
NPT
1/2 3/8 3 1-1/2 5/64 121371 Mounting Clamp 121371A
3/4 3/8 3 1-1/2 5/64 121371 Mounting Clamp 121371B
Shell ID/
Bulb
Diameter
1/2 4-1/4 1-1/2 1/8 112721 Spring Clip 112622AA
3/8 + 5/8 3 2-1/4 Plastic sleeve on well tube 138134E
1/2 4-1/4 1-1/2 1/8 112721 Spring Clip 112630AA
Insertion/
Max Bulb
Length
3-1/2 1-1/2 121371 Mounting Clamp 121371P
3-3/4 1-1/2 1/8 112721 Spring Clip 112620AA
4-1/4 4-1/2 112721 Spring Clip 112626AA
3-1/2 1-1/2 5/64 121371 Mounting Clamp 121371Q
8-1/4 1-1/2 112630AB
Insulation
Depth
3 5/64 121371 Mounting Clamp 121371L
3 5/64 121371 Mounting Clamp 121371M
4-1/2 — — 122555D
2-1/4 — — 138134B
4-1/2 Plastic sleeve on well tube 122555B
4-1/2 122555E
4 112634AA
Capillary
Diameter
— — 123869A
Spud setscrew for armored capillary, plug 123732AA
— Plastic sleeve on well tube 123869B
— — 123870A
121371 Mounting Clamp, plastic sleeve 123171N
— — 123871A
Plastic sleeve on well tube 123871B
Plastic sleeve on well tube 122555A
— 122555C
Includes
Part
Number
Table 2. Stainless Steel, Mild Steel, and Monel Immersion Wells.
Spud in
in. x 14
NPT
1/2 3/8 3 1-1/2 5/64 Stainless
68-0040—04 4
Shell ID/
Bulb
Diameter
1/2 4-1/4 1 1/8 Mild steel 112721 Spring Clip 112623AA
Insertion/
Max Bulb
Length
Insulation
Depth
4 1/8 Stainless
1 1/8 Stainless
Capillary
Diameter
Material Includes Part Number
steel
Stainless
steel
steel
steel
121371 Mounting Clamp 121371E
112721 Spring Clip 112624AA
112721 Spring Clip 112628AA
112721 Spring Clip 112632AA
IMMERSION WELLS AND COMPRESSION FITTINGS
107324A
M17275A
131524A
M17276A
M17277A
311266D
314439
M17271
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. 7617ABY
3/4-14 NPT 1-5/8 in. 5/64 in. 104484B
11/16 in. 1-1/2 in. 1/8 in. 7617P
Table 4. Element Holders for Duct-Mount Applications .
Application Length Plate Size Description Part Number
Bulb holders 8-5/8 in. 2-3/4 in.
x 1-3/4 in.
Supports capillary and bulb in duct;
mounting screws not included.
2-3/4 in x 3 in.
Averaging
element holders
14 in. 3-1/4 in x
3-1/4 in.
Holds 1 or 2 elements in 0°F to
100°F air; grommet holds one
5/64 in. and one 1/8 in. diameter
capillary; helps reduce airflow through
opening in duct.
— — Mounting clip; use with grommet;
mounting screws not included; one
required per clip.
Use with 1/2 in. EMT thinwall conduit
where duct access is limited. Kit
includes 4 in. (101 mm) cover plate,
1/2 in. EMT compression fitting, 3/16
in. (5 mm) rubber grommet, clamp
assembly, wire ties and mounting
screws.
7640HX
M17279
5 68-0040—04
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