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IMMERSION WELLS AND COMPRESSION FITTINGS

68-0040—04

Fig. 11. Mounting sensing bulb and

311266D Bulb Holder in duct.

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.

NOTE: Do not use this mounting method for liquid

applications.

Fig. 12. Mounting sensing bulb in duct using waste nut

and compression fitting.

Averaging Element Holders

The averaging element must be supported so it is distributed

evenly across the entire height and width of the duct. It can be

fastened to perforated strap iron (see Fig. 13) or mounted with

314439 Mounting Clips (see Fig. 14). This type of mounting

requires threading the element through a grommet inserted in

a hole in the duct wall.

For ducts with limited access, the 7640HX Averaging Element

Mounting Kit allows mounting the element through a single

hole in the side of the duct. This kit requires a length of 1/2 in.

EMT conduit. See Fig. 15.

Fig. 13. Mounting averaging element with

perforated strap iron.

Fig. 14. Mounting averaging element with

314439 Mounting Clips.

Fig. 15. Mounting averaging element with 7640HX

Averaging Element Mounting Kit.

14 (356)

3-1/4
(83)

1-3/8
(35)

1-5/8
(41)

3-1/4
(83)

2-3/4
(70)

2-1/4 x 2-1/4 (57 x 57) APPROXIMATE
HOLE IN DUCT FOR INSTALLATION

ADJUSTABLE

SPRING
CLIPS (2)

THERMOMETER
BULB

ACCESS
HOLE

RUBBER GROMET

NO. 8 SHEET METAL
MOUNTING SCREWS (2)

CONTROLLER BULB

M7355

CAPILLARY

COMPRESSION

FITTING

CAPILLARY
TUBING

DUCT
WALL

WASTE
NUT

BULB
(CAPSULE)

M17266

DUCT
WALL

WIRE FASTENINGS

CAPILLARY
TUBING

GROMMET

ELEMENT

M17269

DUCT
WALL

CAPILLARY
TUBING

GROMMET

AVERAGING
ELEMENT

USE NO. 10
SHEETMETAL
SCREWS

314439
CLIP

BEND HERE
IF NECESSARY

M17289

DUCT
WALL

4 in.
COVER
PLATE

CAPILLARY

GROMMET

AVERAGING
ELEMENT

M17270

CONDUIT
COMPRESSION
FITTING

WIRE TIES

1/2 in. EMT CONDUIT
(OBTAIN LOCALLY)

Содержание 104484A

Страница 1: ... 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 all...

Страница 2: ... 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 an...

Страница 3: ...MOUNTING FLANGE MOUNTING FLANGE MOUNTING CLAMP WELL SPUD FITS 1 2 OR 3 4 14 NPT TAPPED HOLE FITS 1 2 OR 3 4 14 NPT TAPPED HOLE FITS 1 2 OR 3 4 14 NPT TAPPED HOLE FITS 1 2 OR 3 4 14 NPT TAPPED HOLE 1 8 1 2 in OF THREADS MAY EXTEND INTO CONTROLLED MEDIUM 1 8 1 2 in OF THREADS MAY EXTEND INTO CONTROLLED MEDIUM WELL SHELL M17259A SET SCREW FITS 1 2 OR 3 4 14 NPT TAPPED HOLE FITS 1 2 OR 3 4 14 NPT TAPP...

Страница 4: ...nting Clamp 121371B 123870A 3 5 64 121371 Mounting Clamp 121371M 121371 Mounting Clamp plastic sleeve 123171N 123871A Plastic sleeve on well tube 123871B 4 1 2 122555D Plastic sleeve on well tube 122555A 3 1 2 1 1 2 5 64 121371 Mounting Clamp 121371Q 2 1 4 138134B 4 1 2 Plastic sleeve on well tube 122555B 122555C 3 8 5 8 3 2 1 4 Plastic sleeve on well tube 138134E 4 1 2 122555E 1 2 4 1 4 1 1 2 1 8...

Страница 5: ...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 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 Averaging element holders Mounting clip use with grommet mounting screws not included one required per clip Use with ...

Страница 6: ... Holds capillary in place on 1122620AA 112639AB Immersion Wells 1 2 in well spud 5 64 capillary 112721 112720 1 2 in well spud 1 8 capillary 3 4 in well spud 1 8 capillary Heat conductive compound Improves heat conduction in well applications where bulb does not fit tightly 4 oz 118 ml Single application tube 1 2 oz Well Adapter Adapts well with setscrew on spud for use with direct insertion bulb ...

Страница 7: ...l mild steel and Monel wells are also available for applications requiring higher maximum temperature and pressure ratings or greater corrosion resistance Some copper wells are available with a plastic sleeve over the tube to reduce electrolytic and corrosive activity Well Sizing Major factors in selecting well size are size of the boiler tapping bulb diameter insulation depth insertion length Imm...

Страница 8: ...ng material and the packing nut and externally threaded to fit standard boiler tappings The washers and packing ring are sized to fit a particular capillary diameter Capillary compression fittings are used to replace an immersion well when the sensing bulb of a remote bulb controller requires direct insertion into the controlled medium The fitting seals around the capillary However compression fit...

Страница 9: ... must be gradual to pre vent breaks in the tubing and subsequent loss of fill For faster heat transfer use heat conductive compound to fill the space between the bulb and the well A tube of 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 1 Fill the well w...

Страница 10: ...re 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 Bulb Holders 1 Cut a hole large enough to admit the bulb and holder in the duct or plenum at the mounting location 2 Drill holes for the bulb holder mounting screws 3 Mount the bulb and capillary on the holder See Fi...

Страница 11: ...et inserted in a hole in the duct wall For ducts with limited access the 7640HX Averaging Element Mounting Kit allows mounting the element through a single hole in the side of the duct This kit requires a length of 1 2 in EMT conduit See Fig 15 Fig 13 Mounting averaging element with perforated strap iron Fig 14 Mounting averaging element with 314439 Mounting Clips Fig 15 Mounting averaging element...

Страница 12: ... use either the 105900 Pipe Strap or metal hose clamps The pipe strap fits pipe up to 3 4 in OD External mounting of the sensor produces a slight offset in the temperature control point Typically the control temperature increases as much as 5 F 2 8 C with a bare sensor strapped to the discharge pipe Applying insulation around the sensor and pipe decreases the offset Insulation must be used if larg...

Страница 13: ...ving the system through one complete cycle CROSS REFERENCE 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 Table 7 Wells With and Without Mounting Clamp 121371 Part Number With Clamp Par...

Страница 14: ...iameter bulb None 122555G Immersion well Copper 3 4 14 NPT 4 1 2 in insulation 5 in insertion dual diameter bulb None 123870E Immersion well Copper 3 4 14 NPT 1 1 2 in insulation 3 in insertion includes plastic sleeve dual diameter capsule 138134E 2 1 4 in insulation 123871D Immersion well Copper 3 4 14 NPT 3 in insulation 3 in insertion includes plastic sleeve dual diameter well 138134E 123871E I...

Страница 15: ...IMMERSION WELLS AND COMPRESSION FITTINGS 15 68 0040 04 ...

Страница 16: ... Registered Trademark 2008 Honeywell International Inc 68 0040 04 M S Rev 07 08 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 fees arising out of or r...

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