Accessory List

ManualsBrandsResideo ManualsAquastats & WellsHigh or Low Limit Aquastat, 100-240°F range, 5-30°F Adj Differential

PRODUCT DATA

68-0040-05

Immersion Wells and Compression

Fittings

FOR TEMPERATURE CONTROLLERS

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.

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.

IMMERSION WELL

112632AA

IMMERSION WELL

107324A

ELEMENT

HOLDER

104484A

COMPRESSION FITTING

121371B

Contents

Application .......................................................................... 1

Features .............................................................................. 1

Specifications ..................................................................... 2

Ordering Information .......................................................... 2

General Information ........................................................... 7

Installation .......................................................................... 8

Checkout ............................................................................. 14

Cross Reference ................................................................. 14

Summary of content (16 pages)

PAGE 1
Immersion Wells and Compression Fittings FOR TEMPERATURE CONTROLLERS PRODUCT DATA FEATURES 121371B IMMERSION WELL 112632AA IMMERSION WELL • 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.
PAGE 2
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.
PAGE 3
IMMERSION WELLS AND COMPRESSION FITTINGS WELL SPUD. FITS 1/2 OR 3/4-14 NPT TAPPED HOLE MOUNTING CLAMP MOUNTING FLANGE 1/8-1/2 in. OF THREADS MAY EXTEND INTO CONTROLLED MEDIUM 121371A-S 123869A-123872A (LESS MOUNTING CLAMP) WELL SHELL. INSERTION/MAX BULB LENGTH INSULATION DEPTH NOTE: 123870F HAS DUAL DIAMETER WELL SHELL.
PAGE 4
IMMERSION WELLS AND COMPRESSION FITTINGS Table 1. Copper Immersion Wells. Spud in in.
PAGE 5
IMMERSION WELLS AND COMPRESSION FITTINGS Table 3. Capillary Compression Fittings. Material Brass Spud 1/2-14 NPT Maximum Bulb Diameter 1/2 in. Insulation Depth 1-5/16 in. 3/4-14 NPT 11/16 in. Capillary Diameter Part Number 5/64 in. 104484A 1/8 in. 7617M 1-1/2 in. 5/64 in. 104484C 2 in. 5/64 in. 7617ABY 1-5/8 in. 5/64 in. 104484B 1-1/2 in. 1/8 in. 7617P Table 4. Element Holders for Duct-Mount Applications . Application Length Plate Size Description Bulb holders 8-5/8 in.
PAGE 6
IMMERSION WELLS AND COMPRESSION FITTINGS Table 5. Immersion Well Accessories . Description Mounting clamp Size in in. (except where noted) Application Part Number 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 1122620AA-112639AB Immersion Wells. 1/2 in well spud; 5/64 capillary 104488 1/2 in. well spud; 1/8 capillary.
PAGE 7
IMMERSION WELLS AND COMPRESSION FITTINGS Table 6. Accessories for Duct-Mount Applications Description Bulb shield assembly Application Size Part Number 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 pipe. 4-1/2 in.
PAGE 8
IMMERSION WELLS AND COMPRESSION FITTINGS he nominal length of the spud, including the full length of the threads and the hex, defines the insulation depth. Depending on the characteristics of the tapping, 1/8 to 1/2 in. of the threaded end of the spud can extend into the controlled medium. Consider this additional length when determining how far the well extends into the controlled medium. The length of the well shell starting at the end of the spud defines the insertion length.
PAGE 9
IMMERSION WELLS AND COMPRESSION FITTINGS WARNING Severe Scalding Hazard. Contact with hot liquid can cause severe injury or death. Drain system before beginning well or compression fitting installation. WARNING 3. Most equipment manufacturers provide a tapping for temperature controller sensing element insertion. The tapping should be located to measure average system temperature. Use the 121371 Mounting Clamp only on wells with a mounting flange on the spud end. Turn off the power.
PAGE 10
IMMERSION WELLS AND COMPRESSION FITTINGS NOTE: 1. 2. The spring clip does not hold the capillary as securely as does the mounting clamp. See Table 5 for spring clip part numbers. Slide the clip over the capillary with the prongs facing the well. Push the clip as far as possible into the spud. See Fig. 6. NOTE: 7. 8. Slide the seal assembly into the fitting. Make sure the sensing bulb extends the desired distance into the controlled medium. See Fig. 2. Tighten the packing nut. 1/2 in.
PAGE 11
IMMERSION WELLS AND COMPRESSION FITTINGS NOTE: Dimensions shown in in. (mm). Duct Mounting with Capillary Compression Fitting In some duct-mount application, it is desirable to use a compression fitting to reduce air leakage at the sensing element location. For these applications, first mount a waste nut on the duct to ensure secure mounting. See Fig. 12. See Table 6 for part numbers.
PAGE 12
IMMERSION WELLS AND COMPRESSION FITTINGS 8. CAPILLARY TUBING GROMMET AVERAGING ELEMENT 9. USE NO. 10 SHEETMETAL SCREWS 10. 11. 314439 CLIP Place the split plug (provided with 34886A; or order 107323A Split Plug separately) around the tubing and move the bulb and shield into mounting position as a single unit. Push the split plug into the hole until it is wedged securely in place. Fasten the shield on the wall with screws (provided with 34886A).
PAGE 13
IMMERSION WELLS AND COMPRESSION FITTINGS CAPILLARY TUBE T-CLAMP CAPILLARY TUBING Fig. 18. Mounting bulb to pipe with metal hose clamps. BULB CAPILLARY TUBE SUPPLY WATER PIPE DUCT TAPE FOAM RUBBER WRAP (EXTEND 6 in. (152 mm) BEYOND ENDS OF BULB) M8836 PIPE Fig. 17. Mounting bulb to pipe with pipe strap. NOTE: METAL HOSE CLAMPS M17267 When using a pipe strap, the maximum pipe OD is 3/ 4 in. 13 M17268 Fig. 19. Covering bulb and pipe with foam rubber insulation.
PAGE 14
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 in Table 7for your convenience. The cross reference in Table 8 lists wells and fittings no longer available and suggests functional replacements. 1. 2. 3. 4. Visually inspect the fittings in hydronic applications for leakage. If necessary, tighten these fittings.
PAGE 15
IMMERSION WELLS AND COMPRESSION FITTINGS Table 8. Cross Reference . Old Part Number Description Replacement Part Number Notes 121371G Immersion well. Brass, 1/2-14 NPT, 1-1/2 in. insulation, 6-1/2 in. insertion, includes 121371 mounting clamp. None — 121371N Immersion well. Copper, 3/4-14 NPT, 3 in. insulation, 3 in. insertion, includes plastic sleeve, 121371 mounting clamp. 123871B No mounting clamp. 122555C Immersion well. Copper, 3/4-14 NPT, 4-1/2 in. insulation, 5 in. insertion.
PAGE 16
IMMERSION WELLS AND COMPRESSION FITTINGS www.resideo.com Resideo Technologies, Inc. 1985 Douglas Drive North, Golden Valley, MN 55422 1-800-468-1502 68-0040—05 M.S. Rev. 05-21 | Printed in United States © 2020 Resideo Technologies, Inc. All rights reserved. This product is manufactured by Resideo Technologies, Inc. and its affiliates.