CONSTRUCTION STANDARD SPECIFICATION

SECTION 15083

[PIPE AND EQUIPMENT INSULATION]{.underline}

[PART 1 - General](#__RefHeading___Toc137516935)

[1.01 SUMMARY 2](#__RefHeading___Toc137516936)

[1.02 REFERENCES 2](#__RefHeading___Toc137516937)

[1.03 SUBMITTALS 3](#__RefHeading___Toc137516938)

[1.04 QUALITY ASSURANCE 3](#__RefHeading___Toc137516939)

[1.05 DELIVERY, STORAGE, AND HANDLING 4](#__RefHeading___Toc137516940)

[PART 2 - products](#__RefHeading___Toc137516941)

[2.01 INSULATION MATERIALS 4](#__RefHeading___Toc137516942)

[2.02 FIELD-APPLIED JACKETS 5](#__RefHeading___Toc137516943)

[2.03 ACCESSORIES AND ATTACHMENTS 6](#__RefHeading___Toc137516944)

[PART 3 - Execution](#__RefHeading___Toc137516945)

[3.01 PREPARATION 6](#__RefHeading___Toc137516946)

[3.02 GENERAL APPLICATION REQUIREMENTS 6](#__RefHeading___Toc137516947)

[3.03 COORDINATION 7](#__RefHeading___Toc137516948)

[3.03 MINERAL-FIBER INSULATION APPLICATION
7](#__RefHeading___Toc137516949)

[3.04 FLEXIBLE ELASTOMERIC THERMAL INSULATION APPLICATION
9](#__RefHeading___Toc137516950)

[3.05 CALCIUM SILICATE INSULATION APPLICATION
9](#__RefHeading___Toc137516951)

[3.06 FIELD-APPLIED JACKET APPLICATION 9](#__RefHeading___Toc137516952)

[3.07 EQUIPMENT 10](#__RefHeading___Toc137516953)

[3.08 FINISHES 10](#__RefHeading___Toc137516954)

TABLE 1 INSULATION SCHEDULE 11

1.  
2.  
3.  
4.  
5.  
6.  

CONSTRUCTION STANDARD SPECIFICATION

SECTION 15083

[PIPE AND EQUIPMENT INSULATION]{.underline}

[]{#__RefHeading___Toc137516935 .anchor}[General]{.underline}

1.  []{#__RefHeading___Toc137516936 .anchor}SUMMARY

    A.  This Section includes preformed, rigid and flexible pipe
        insulation; field-applied jackets; accessories and attachments;
        and sealing compounds for above ground, interior and exterior
        mechanical piping systems as listed in Part 3 application
        schedules. This section also includes mechanical equipment
        insulation requirements.

2.  []{#__RefHeading___Toc137516937 .anchor}REFERENCES

    A.  American Society of Testing and Materials (ASTM)

        B 209 Aluminum and Aluminum-Alloy Sheet and Plate

        C 533 Calcium Silicate Block and Pipe Thermal Insulation

        C 534 Preformed Flexible Elastomeric Cellular Thermal Insulation
        in Sheet and Tube Form

        C 547 Mineral Fiber Pipe Insulation

        C 553 Mineral Fiber Blanket Thermal Insulation for Commercial
        and Industrial Applications

        C 612 Mineral Fiber Block and Board Thermal Insulation

        C 795 Thermal Insulation for Use in Contact with Austenitic
        Stainless Steel

        E 84 Standard Test Method for Surface Burning Characteristics of
        Building Materials

    B.  American National Standards

        A 117.1 Accessible and Usable Buildings and Facilities

    C.  Military Specification

        MIL-C-19565C Coating Compounds, Thermal Insulation, Fire- and
        Water-Resistant, Vapor-Barrier

3.  []{#__RefHeading___Toc137516938 .anchor}SUBMITTALS

    A.  Product Data: Identify thermal conductivity, thickness, and
        jackets (both factory and field applied, if any), for each type
        of product indicated. Provide manufactures installation
        requirements for each type of insulation and piping. Show
        compliance with necessary industry standards and listing
        agencies.

4.  []{#__RefHeading___Toc137516939 .anchor}QUALITY ASSURANCE

    A.  All insulating materials required for piping shall be furnished
        and installed under this contract. The execution of the work
        shall be in strict accordance with the best practices of the
        trade, the manufacture's requirements, and the intent of this
        specification.

    B.  Fire-Test-Response Characteristics: As determined by testing
        materials identical to those specified in this Section according
        to ASTM E 84, by a testing and inspecting agency acceptable to
        authorities having jurisdiction. Factory label insulation and
        jacket materials and sealer and cement material containers with
        appropriate markings of applicable testing and inspecting
        agency.

        1.  Insulation Installed Indoors: Flame-spread rating of 25 or
            less, and smoke-developed rating of 50 or less.

        2.  Insulation Installed Outdoors: Flame-spread rating of 75 or
            less, and smoke-developed rating of 150 or less.

    C.  Mockups: Before installing insulation, build mockups for each
        type of insulation and finish listed below to demonstrate
        quality of insulation application and finishes. Build mockups
        according to the following requirements for interior and
        exterior applications, using materials indicated for the
        completed Work:

        1.  Include the following mockups:

            a.  One 10-foot section of 2 inch NPS straight pipe.

            b.  One 90-degree elbow.

            c.  One tee fitting.

            d.  One 2 inch valve.

            e.  Four support hangers, including hanger shields and
                insert.

            f.  One strainer with removable portion of insulation.

            g.  One reducer.

        2.  Build mockups in the location indicated by SDR.

        3.  Obtain SDR approval of mockups before starting insulation
            application.

        4.  Maintain mockups during construction in an undisturbed
            condition as a standard for judging the completed Work.

        5.  Approved mockups may become part of the completed Work if
            undisturbed at time of Substantial Completion.

    D.  Inspection: Perform the following field quality-control
        inspections, after installing insulation materials, jackets, and
        finishes, to determine compliance with requirements:

        1.  Inspect fittings and valves randomly selected by SDR.

        2.  Remove fitting covers from 20 elbows or 1 percent of elbows,
            whichever is less, for various pipe sizes.

        3.  Remove fitting covers from 20 valves or 1 percent of valves,
            whichever is less, for various pipe sizes.

    E.  Insulation applications will be considered defective if sample
        inspection reveals noncompliance with requirements. Remove
        defective Work and replace with new materials according to these
        Specifications.

    F.  Reinstall insulation and covers on fittings and valves uncovered
        for inspection according to these Specifications.

5.  []{#__RefHeading___Toc137516940 .anchor}DELIVERY, STORAGE, AND
    HANDLING

    A.  Insulation materials shall be new and undamaged with the
        manufacture's name and brand marking clearly displayed on all
        containers.

    B.  Insulation materials shall be kept dry and protected from the
        weather at all times until installation is complete. Insulation
        material found to be wet or damaged shall be replaced by the
        contractor at no cost to the owner.

        []{#__RefHeading___Toc137516941 .anchor}[products]{.underline}

6.  []{#__RefHeading___Toc137516942 .anchor}INSULATION MATERIALS

    A.  Mineral-Fiber Insulation: Glass fibers bonded with a
        thermosetting resin complying with the following:

        1.  Preformed Pipe Insulation: Comply with ASTM C 547, Type
            I-Molded, for use to 850 deg. F, with factory-applied,
            all-purpose, vapor-retarder jacket (ASJ), with self-sealing
            adhesive lap (SSL). Minimum 3 lbs./cu.ft. density, maximum
            0.23 (BTU-in./hr.-sq.ft.-deg. F) at 75 deg. F thermal
            conductivity.

        2.  Blanket Insulation: Comply with ASTM C 553, Type II, without
            facing.

        3.  Pipe and Tank Insulation: Semi-rigid fiberglass board in a
            roll form faced with factory applied vapor retarder jacket
            (ASJ). Comply with ASTM C 795, Type II, for use to 850
            deg. F. Maximum conductivity, 0.26
            (BTU-in./hr.-sq.ft.-deg. F) at 100 deg. F.

        4.  Mineral--Fiber Board Thermal Insulation: Comply with ASTM C
            612, Type IB, for use to 450 deg. F, with a factory applied
            jacket manufactured from foil, reinforcing scrim, and kraft
            paper (FSK). Minimum density of 3 lb./cu.ft. Maximum
            conductivity of 0.40 (BTU-in./hr.-sq.ft.-deg. F) at 300 deg.
            F.

        5.  Vapor-Retarder Mastics: Fire- and water-resistant,
            vapor-retarder mastic for indoor applications. Comply with
            MIL-C-19565C, Type II.

    B.  Flexible Elastomeric Thermal Insulation: Closed-cell, sponge- or
        expanded-rubber materials. Comply with ASTM C 534, Type I for
        tubular materials and Type II for sheet materials.

        1.  Adhesive: As recommended by insulation material
            manufacturer.

        2.  Ultraviolet-Protective Coating: As recommended by insulation
            manufacturer.

    C.  Calcium Silicate Insulation: Preformed pipe sections of
        non-combustible, inorganic, hydrous calcium silicate with a
        non-asbestos fibrous reinforcement. Comply with ASTM C 533, Type
        I.

    D.  Standard PVC Fitting Covers: Factory-fabricated fitting cover
        system consisting of one-piece, pre-molded, PVC covers with
        fiberglass inserts manufactured from 20-mils thick, high-impact,
        ultraviolet-resistant PVC

        1.  Shapes: 45- and 90-degree, short- and long-radius elbows,
            reducers, end caps, soil-pipe hubs, traps, mechanical
            joints, roof drains, and P-trap and supply covers for
            lavatories for the disabled.

        2.  Adhesive: As recommended by insulation material
            manufacturer.

7.  []{#__RefHeading___Toc137516943 .anchor}FIELD-APPLIED JACKETS

    A.  Aluminum Jacket: Aluminum roll stock, ready for shop or field
        cutting and forming to indicated sizes, or factor cut and
        rolled. Comply with ASTM B 209, 3003 alloy, H-14 temper.

        1.  Finish and Thickness: Stucco-embossed finish, 0.016 inch
            thick.

        2.  Moisture Barrier: 1-mil thick, heat-bonded polyethylene and
            kraft paper.

        3.  Elbows: Preformed, 45- and 90-degree, short- and long-radius
            elbows; same material, finish, and thickness as jacket.

    B.  PVC Jacket: White, 25/50 rated per ASTM E 84, UV resistant,
        minimum thickness 0.020" for insulation O.D. up to 18" and
        0.030" for insulation O.D. above 18"

        1.  Fittings -- See 2.01D "Standard PVC Fitting Covers"

8.  []{#__RefHeading___Toc137516944 .anchor}ACCESSORIES AND ATTACHMENTS

    A.  Bands: Aluminum; 0.007 inch thick 3/4 inch wide.

    B.  Bands: Stainless Steel, ASTM A666, Type 304, 0.020 inch thick.

    C.  Manufactured Thermal Hanger Shields: Thermal inserts shall be
        360 degree calcium silicate extending 1 inch past the metal
        shield and with all service jacket. Sized to fit the pipe
        diameter and match the outside diameter of the adjoining pipe
        insulation. Metal shield shall be galvanized steel 180 degree
        for clevises and roller type hangers and 360 degree for clamp
        type hangers and supports. Shield and insert length and gauge
        shall be manufactures standard for the intended application.

        []{#__RefHeading___Toc137516945 .anchor}[Execution]{.underline}

9.  []{#__RefHeading___Toc137516946 .anchor}PREPARATION

    A.  Surface Preparation: Clean and dry pipe and fitting surfaces.
        Remove materials that will adversely affect insulation
        application.

10. []{#__RefHeading___Toc137516947 .anchor}GENERAL APPLICATION
    REQUIREMENTS

    A.  Apply insulation to piping systems using materials, thickness
        and jackets listed in the schedule at the end of this section.

    B.  Piping exposed to the weather: Any piping subject to freezing
        and any piping with heat tracing shall have the insulation
        thickness increased by an additional 2-inches mineral insulation
        of the same finish as specified for the particular service when
        not subject to freezing.

    C.  Items Not Insulated: Unless otherwise indicated, do not apply
        insulation to the following systems, materials, and equipment:

        1.  In steam, hot water, domestic and non-potable service only:
            Flexible connectors, unions, pressure reducing valves,
            balancing valves, flow control valves, steam traps, and in
            sizes less that 1-1/2", valves and strainers.

        2.  Fire-suppression piping.

        3.  Flexible rubber connections in chilled water systems.

    D.  Handicap Lavatories: Cover all exposed lavatory supply and waste
        fittings with insulation and removable PVC covers to comply with
        ANSI Std. A117.1 requirements.

    E.  Apply insulation materials, accessories, and finishes according
        to the manufacturer\'s written instructions; with smooth,
        straight, and even surfaces; free of voids throughout the length
        of piping, including fittings, valves, and specialties. Apply
        insulation with the least number of joints practical.

    F.  Apply insulation over fittings, valves, and specialties, with
        continuous thermal and vapor-retarder integrity, unless
        otherwise indicated. Refer to special instructions for applying
        insulation over fittings, valves, and specialties.

    G.  Interior Wall and Partition Penetrations: Apply insulation
        continuously through walls and floors unless not allowed by fire
        stop system. Firestopping and fire-restive joint sealers are
        specified in Section 07270, "Firestop and Smokestop Systems"

    H.  Hangers and Anchors: Provide factory or field fabricated rigid
        insulation inserts with metal shields at all hangers of
        horizontal piping and anchors of vertical piping. Where vapor
        retarder is indicated, seal penetrations in insulation at
        hangers, supports, anchors, and other projections with
        vapor-retarder mastic.

11. []{#__RefHeading___Toc137516948 .anchor}COORDINATION

    A.  Coordinate with other trades so as to cause no delays in
        applying insulation; be aware of testing, painting, hanger
        installation and heat tracing requirements. Coordinate clearance
        requirements with piping Installer for insulation application.

    B.  Protect work of other Contractors and SNL from dirt and debris
        caused by the insulation work. Remove rubbish daily and at the
        conclusion of work.

    C.  Do not insulate over nameplates or sight /light glasses.

    D.  Coordinate with pump layout to insure pressure switches and
        gauges are extended outside of pump insulation boxes.

12. []{#__RefHeading___Toc137516949 .anchor}MINERAL-FIBER INSULATION
    APPLICATION

    A.  Apply insulation to straight pipes and tubes as follows: use
        preformed pipe insulation when able. Use pipe and tank
        insulation for larger diameter piping where preformed insulation
        is not available. To meet required thickness, apply multiple
        layers of insulation with longitudinal and end seams staggered.

        1.  Keep SSL adhesive and contact surfaces clean and free of
            dirt and moisture. Seal immediately once adhesive is
            exposed. Seal circumferential joints with a minimum 3 inch
            wide tape and secure with two outward clinching staples at
            the overlap. Rub the longitudinal joints firmly with a
            squeegee and secure with 2 outward clinching staples evenly
            spaced in each 3 foot section of insulation.

        2.  Where vapor retarders are indicated; Seal staples and any
            penetrations in the insulation with vapor-retarder mastic.
            Apply vapor retarder to ends of insulation at intervals of
            15 to 20 feet to form a vapor retarder between pipe
            insulation segments.

        3.  Taper the ends of insulation at terminations. Seal all raw
            edges of insulation with mastic.

    B.  Apply insulation to flanges as follows:

        1.  Apply preformed pipe insulation to outer diameter of pipe
            flange.

        2.  Make width of insulation segments the same as overall width
            of the flange and bolts, plus twice the thickness of the
            pipe insulation.

        3.  Fill voids between inner circumference of flange insulation
            and outer circumference of adjacent straight pipe segments
            with a collar fabricated for preformed pipe insulation.

        4.  Fill all voids and seal all raw edges of insulation with
            vapor retarder mastic.

    C.  Apply insulation to fittings and elbows and mechanical grooved
        couplings as follows:

        1.  Apply mitered sections of pipe insulation, or glass-fiber
            blanket insulation, to a thickness equal to adjoining pipe
            insulation. Secure insulation materials with wire, tape, or
            bands.

        2.  Cover fittings with standard PVC fitting covers. Secure the
            fitting covers by wrapping the ends with minimum 1-1/2" wide
            PVC tape. Overlap a minimum of 2" and do not stretch the
            last 2" of tape. Secure the throat with a stainless steel
            tack.

        3.  On systems requiring a vapor barrier, seal the throat with
            vapor barrier mastic (the PVC fitting cover is to act as the
            vapor barrier).

    D.  Apply insulation to valves and specialties as follows:

        1.  Apply premolded pipe insulation sections of the same
            material as straight segments of pipe insulation, sized and
            cut to fit around the valve body, over the flanges, and
            around the bonnet. Fill all voids and seal all raw edges in
            insulation with vapor retarder mastic. Caulk around valve
            stem cutout.

        2.  Arrange insulation to permit access to packing and to allow
            valve operation without disturbing insulation. For check
            valves, arrange insulation for access to strainer basket
            without disturbing insulation.

        3.  Apply insulation to flanges as specified for flange
            insulation application.

13. []{#__RefHeading___Toc137516950 .anchor}FLEXIBLE ELASTOMERIC THERMAL
    INSULATION APPLICATION

    A.  Follow manufacturer\'s written instructions for applying
        insulation to straight pipes, tubes, and fittings.

        1.  Seal longitudinal seams and end joints with manufacturer\'s
            recommended adhesive. Cement to avoid openings in insulation
            that will allow passage of air to the pipe surface.

14. []{#__RefHeading___Toc137516951 .anchor}CALCIUM SILICATE INSULATION
    APPLICATION

    A.  Apply insulation to straight pipes and tubes as follows

        1.  Secure each layer of insulation to pipe with stainless-steel
            bands at 12-inch intervals and tighten without deforming
            insulation materials

        2.  Apply two-layer insulation with joints tightly butted and
            staggered at least 3 inches. Secure inner layer with
            0.062-inch soft-annealed, stainless-steel wire spaced at
            12-inch intervals. Secure outer layer with stainless-steel
            bands at 12-inch intervals.

        3.  Apply an aluminum jacket to cover all insulation. See
            section on jacketing.

15. []{#__RefHeading___Toc137516952 .anchor}FIELD-APPLIED JACKET
    APPLICATION

    A.  Interior: Apply either aluminum or PVC jacketing to exposed
        insulated pipe, valves, fittings, and specialties, at an
        elevation of 8 feet or less above finished floor in
        mechanical/electrical rooms, penthouses, and services
        aisles/pipe chases. Fittings of aluminum jacketed piping may be
        either aluminum or standard PVC fitting covers. Jacketing for
        piping in existing areas shall match existing jacketing.

    B.  Exterior: Apply aluminum jacketing to all external piping that
        is insulated. Cover all fittings, valves, and specialties with
        aluminum jacketing.

    C.  Apply metal jacket where indicated, with 2-inch overlap at
        longitudinal seams and end joints. Secure jacket with aluminum
        bands or sheet metal screws on 12 inches centers and at end
        joints. On piping exposed to the weather, overlap longitudinal
        seams arranged to shed water and seal end joints with
        weatherproof mastic.

    D.  Apply PVC jacketing where indicated, with 2-inch overlap at
        longitudinal seams and at fitting covers, the maximum the cover
        allows. Seal longitudinal seams by joining with PVC welding
        solvent. Seal circumferential ends with 1/1/2" PVC tape.

16. []{#__RefHeading___Toc137516953 .anchor}EQUIPMENT

    A.  Hot Water Converters, Chilled Water Heat Exchangers, Chilled
        Water Chemical Feeders, Hot Water Storage Tanks, Condensate
        Receivers, Flash Tanks, Separators and Blow-Off Tanks(not
        factory insulated):

        1.  Insulate with 1-1/2" fiberglass preformed pipe or "pipe and
            tank" insulation. Secure insulation with banding on vessels
            3 foot in diameter and larger. Finish with aluminum
            jacketing and secure with metal bands or sheet metal screws.
            Secure jacketing with stainless steel banding on vessels 6
            foot in diameter and larger.

    B.  Steam Condensate Pumps (unless factory insulated jacket is
        provided with pump): Insulate with a removable, reusable custom
        fit cover manufactured from teflon-impregnated cloth with double
        sewn and binded seams and 1 inch thick fiberglass. Suitable for
        continuous temperatures to 500 degrees F.

    C.  Chilled Water and Process Chilled Water Pumps (Operating at 45
        deg. F or less or as indicated on the drawings):

        1.  Base Mounted Pumps; Insulate with 1/1/2" thick rigid
            fiberglass board applied with adhesive to the interior (FSK
            facing the interior of the box) of aluminum sheet metal
            boxes that are constructed to tightly fit the pump housing
            and rigid enough to be removed and re-installed without
            deforming.

        2.  In-line Pumps; Insulates with 1-1/2" thick rigid fiberglass
            board with an FSK jacket to a box shaped to fit the pump
            housing and with edges secured with matching FSK tape.

    D.  Roof and Overflow Drains:

        1.  Wrap roof drain sump with 1-½" thick fiberglass blanket and
            cover with a premolded PVC cover.

17. []{#__RefHeading___Toc137516954 .anchor}FINISHES

    A.  Paint insulation finished with all service jacket as specified
        in Section 09900, \"Painting.\"

    B.  Flexible Elastomeric Thermal Insulation: After adhesive has
        fully cured, apply two coats of the insulation manufacturer\'s
        recommended protective coating.

+-----------------+--------+------+-----+-------+-------+-----+-----+
| **Table 1 -     |        |      |     |       |       |     |     |
| Insulation      |        |      |     |       |       |     |     |
| Schedule**      |        |      |     |       |       |     |     |
+-----------------+--------+------+-----+-------+-------+-----+-----+
|                 |        |      |     |       |       |     |     |
+-----------------+--------+------+-----+-------+-------+-----+-----+
| **Piping        | **Ope  | **   | **P | *     | *     | **M | *   |
| System**        | rating | Pipe | ipe | *Pipe | *Pipe | ate | *Va |
|                 | Temp.  | Si   | Siz | S     | S     | ria | por |
| *(See Note 2)*  | ^o^    | ze** | e** | ize** | ize** | l** | Bar |
|                 | F**    |      |     |       | *     |     | rie |
|                 |        | *1\" | *1  | *2-   | Above |     | r** |
|                 |        | &    | -1/ | 1/2\" | 4\"*  |     |     |
|                 |        | Be   | 2\" | to    |       |     |     |
|                 |        | low* | to  | 4\"*  |       |     |     |
|                 |        |      | 2   |       |       |     |     |
|                 |        |      | \"* |       |       |     |     |
+-----------------+--------+------+-----+-------+-------+-----+-----+
| High Pressure   | 306 to | 2-1  | 2   | 3\"   | 4\"   | M   | No  |
| Steam           | 400    | /2\" | -1/ |       |       | .F. |     |
|                 |        |      | 2\" |       |       |     |     |
+-----------------+--------+------+-----+-------+-------+-----+-----+
| Medium Pressure | 251 to | 2\"  | 2   | 3\"   | 3\"   | M   | No  |
| Steam           | 305    |      | -1/ |       |       | .F. |     |
|                 |        |      | 2\" |       |       |     |     |
+-----------------+--------+------+-----+-------+-------+-----+-----+
| Low Pressure    | 200 to | 1-   | 1-1 | 2"    | 2"    | M   | No  |
| Steam           | 250    | 1/2" | /2" |       |       | .F. |     |
+-----------------+--------+------+-----+-------+-------+-----+-----+
| Steam           | 190 to | 1"   | 1   | 2\"   | 2"    | M   | No  |
| Condensate      | 220    |      | -1/ |       |       | .F. |     |
|                 |        |      | 2\" |       |       |     |     |
+-----------------+--------+------+-----+-------+-------+-----+-----+
| Heating Water   | 120 to | 1"   | 1"  | 1     | 1     | M   | No  |
|                 | 200    |      |     | -1/2" | -1/2" | .F. |     |
+-----------------+--------+------+-----+-------+-------+-----+-----+
| Chilled Water   | Up to  | 1"   | 1"  | 1"    | 1"    | M   | Yes |
|                 | 58     |      |     |       |       | .F. |     |
+-----------------+--------+------+-----+-------+-------+-----+-----+
| Process Cooling | Up to  | 1"   | 1"  | 1"    | 1"    | M   | Yes |
| Water           | 65     |      |     |       |       | .F. |     |
+-----------------+--------+------+-----+-------+-------+-----+-----+
| Process Cooling | 66 to  | N.R. | N   | N.R.  | N.R.  | N   | Yes |
| Water           | 110    |      | .R. |       |       | one |     |
+-----------------+--------+------+-----+-------+-------+-----+-----+
| Condensate      | 35 to  | 1"   | 1"  | 1"    | 1"    | M   | Yes |
| Drains          | 70     |      |     |       |       | .F. |     |
+-----------------+--------+------+-----+-------+-------+-----+-----+
| Domestic Cold & | 55 to  | 1"   | 1"  | 1"    | 1"    | M   | Yes |
| Non Potable     | 65     |      |     |       |       | .F. |     |
| Water *(See     |        |      |     |       |       |     |     |
| Note 1)*        |        |      |     |       |       |     |     |
+-----------------+--------+------+-----+-------+-------+-----+-----+
| Domestic        | 100    | 1"   | 1\" | 1     | 1     | M   | No  |
|                 | 150    |      |     | -1/2" | -1/2" | .F. |     |
| Hot & Recir.    |        |      |     |       |       |     |     |
| Water           |        |      |     |       |       |     |     |
+-----------------+--------+------+-----+-------+-------+-----+-----+
| Roof & Overflow | 32 to  | 1"   | 1"  | 1\"   | 1"    | M   | Yes |
| Drains          | 65     |      |     |       |       | .F. |     |
+-----------------+--------+------+-----+-------+-------+-----+-----+
| Engine Exhaust  | 100+   | 1\"  | 1\" | 1\"   | 1\"   | C   | No  |
|                 |        |      |     |       |       | .S. |     |
+-----------------+--------+------+-----+-------+-------+-----+-----+
| Refrigerant     | 25 to  | 3    | 3/  | 3/4\" |       | F   | Yes |
| Suction         | 55     | /4\" | 4\" |       |       | .E. |     |
+-----------------+--------+------+-----+-------+-------+-----+-----+

Note 1. Insulation of domestic cold and non-potable water is only
required in exterior walls, in ceiling spaces below roofs, and in areas
subject to freezing.

Note 2. All piping exposed to the weather, in unheated spaces, or with
heat tracing shall have 2" of insulation added to the values in the
table. Exception: Refrigerant suction piping can remain ¾".

END OF SECTION