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Immersion Wells and Compression Fittings
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
121371B
a range of insulation depths.
IMMERSION WELL
• 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
112632AA
application. Materials include: brass, copper,
IM
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IMMERSION WELLS AND COMPRESSION FITTINGS SPECIFICATIONS Models: Element Holders: Immersion Wells: Allow heat transfer while protecting sensing 311266D Bulb Holder: -40°F to +100°F (-40°C to +38°C). bulb from controlled medium and seal off tapping to permit Other Element Holders: Maximum temperature rating limits bulb removal without draining the boiler. Available in of the controller sensing bulb and capillary. copper, stainless steel, mild steel and Monel. See Table 1 for copper. See Table 2
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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 INSERTION/MAX INSULATION NOTE: 123870F HAS DUAL BULB LENGTH FLANGE DEPTH DIAMETER WELL SHELL. 122555A,B FITS 1/2 OR 3/4-14 NPT TAPPED HOLE MOUNTING FLANGE INSULATION DEPTH INSERTION/MAX BULB LENGTH 122555E FITS 1/2 OR 3/4-14 NPT TAPPED HOLE DUAL DIAMETER WELL MOUNTI
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IMMERSION WELLS AND COMPRESSION FITTINGS Table 1. Copper Immersion Wells. Spud in Shell ID/ Insertion/ Insulation Capillary Part in. x 14 Bulb Max Bulb Depth Diameter Includes Number NPT Diameter Length 1/2 3/8 3 1-1/2 5/64 121371 Mounting Clamp 121371A — — 123869A Spud setscrew for armored capillary, plug 123732AA 3 5/64 121371 Mounting Clamp 121371L 3-1/2 1-1/2 121371 Mounting Clamp 121371P 3-3/4 1-1/2 1/8 112721 Spring Clip 112620AA — Plastic sleeve on well tube 123869B 1/2 4-1/4 1-1/2 1/8
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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. 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. Sup
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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. M17274 121371AA Spring clip M17288 32002656-001 Holds capillary in place on 1/2 in well spud; 5/64 capillary 104488 1122620AA-112639AB Immersion Wells. 112721 1/2 in. well spud; 1/8 capilla
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IMMERSION WELLS AND COMPRESSION FITTINGS Table 6. Accessories for Duct-Mount Applications Description Application Size Part Number Bulb shield assembly Shields bulb from weather; 6 in. (152 mm) long; holds 3/8 less mounting screws and in. and 1/2 bulbs. split plug. M17284 107323A Shields bulb from weather; 7 in. (118 mm) long, clip holds includes mounting screws 3/8 in. bulb. and 33578 Split Plug. M17285 34886A Pipe Strap Fastens bulb to outside of 4-1/2 in. (114 mm) long; used pipe. with up
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IMMERSION WELLS AND COMPRESSION FITTINGS threaded end of the spud can extend into the controlled Capillary compression fittings are used to replace an medium. Consider this additional length when determining how immersion well when the sensing bulb of a remote bulb far the well extends into the controlled medium. controller requires direct insertion into the controlled medium. The fitting seals around the capillary. However, compression The length of the well shell starting at the end of the
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IMMERSION WELLS AND COMPRESSION FITTINGS 1. Fill the well with compound. 2. Coat the bulb generously before inserting it into the well. WARNING 3. Move the bulb up and down inside the well to ensure Electrical Shock Hazard or Equipment Damage even distribution of compound. Hazard. Can cause sever injury, death or short equipment circuitry. Securing Bulb with Mounting Clamp Disconnect all power supplies before installation. Use the 121371 Mounting Clamp only on wells with a mounting flange on
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IMMERSION WELLS AND COMPRESSION FITTINGS Element Holders FITTING (INCLUDING WELL) APPROX. 3-3/8 IN. Use element holders to mount air temperature sensors in a 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. TUBING SPRING CLIP BULB M17263 Bulb Holders Fig. 6. Mounting spring clip into well spud. 1. Cut a
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3-1/4 (83) 1-3/8 (35) 1-5/8 (41) 3-1/4 (83) 2-3/4 (70) IMMERSION WELLS AND COMPRESSION FITTINGS ELEMENT THERMOMETER CAPILLARY BULB TUBING GROMMET ADJUSTABLE SPRING CLIPS (2) CONTROLLER BULB 2-1/4 x 2-1/4 (57 x 57) APPROXIMATE DUCT HOLE IN DUCT FOR INSTALLATION WALL ACCESS HOLE RUBBER GROMET NO. 8 SHEET METAL M7355 WIRE FASTENINGS M17269 MOUNTING SCREWS (2) Fig. 13. Mounting averaging element with Fig. 11. Mounting sensing bulb and perforated strap iron. 311266D Bulb Holder in duct. NOTE:
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IMMERSION WELLS AND COMPRESSION FITTINGS Mount the bulb on the pipe as follows: Bulb Shields 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. Mount it high enough so: Overtightening clamps distorts bulb calibration. a. Accumulated snow, leaves or other debris can- Do not overtighten hose clamps. not obstruct air circulation around it. 1. Secure the bulb to
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IMMERSION WELLS AND COMPRESSION FITTINGS CHECKOUT CROSS REFERENCE When installation is complete, check it as follows: Some series 121371 Wells are also available without the mounting clamp. These pairs are listed together in Table 1 and 1. Visually inspect the fittings in hydronic applications for in Table 7for your convenience. The cross reference in Table 8 leakage. lists wells and fittings no longer available and suggests 2. If necessary, tighten these fittings. functional replacements. 3
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IMMERSION WELLS AND COMPRESSION FITTINGS Table 8. Cross Reference . Old Part Replacement Part Number Notes Number Description 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. insertion, includes plastic clamp. sleeve, 121371 mounting clamp. 122555C Immersion well. Copper, 3/4-14 NPT, 4-1/2 in. 122555B 4-1/2 in. insulation insulati
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IMMERSION WELLS AND COMPRESSION FITTINGS 15 68-0040—04
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IMMERSION WELLS AND COMPRESSION FITTINGS Automation and Control Solutions Honeywell International Inc. Honeywell Limited-Honeywell Limitée 1985 Douglas Drive North 35 Dynamic Drive Golden Valley, MN 55422 Toronto, Ontario M1V 4Z9 customer.honeywell.com ® U.S. Registered Trademark © 2008 Honeywell International Inc. 68-0040—04 M.S. Rev. 07-08
