Document ZB8oE8xrVpYGgVzM6jpqaVodY

American Society of Heating and Ventilating Engineers Guide 1931 Sheet. Metal Work and Ducts 1. Gage and kind of metal. 2. Joints and seams. 3. Stiffeners and supports. 4. Access doors. 5. Encasements and housings as for convectors. 6. Inlet and outlet hoods, louvers, etc. 7. Pampers and damper controls. Registers, Grilles and Diffusers 1. Where required. 2. Kinds, material, design, etc. 3. Finish. 4. Define to be used. where registers with bodies and where plain grilles without Iouv.ers 'arel Unit Ventilating Machines 1. Type and capacity. 2. Control of output. 3. Type of electric current, wiring, switches, etc. 4. Intake hoods, dampers and control. 5. Auxiliaries, as humidifiers, dust filters, etc. 6. Sound proofing. Unit Heating Machines 1. Type and capacity. 2. Control of output. 3. Pipe connections, valves, traps, etc. 4. Type of electric current, wiring, switches, etc. 5. Auxiliaries, as humidifiers, dust filters, etc. 6. Sound proofing. Belts, Chain Drives, Etc. 1. Make. 2. Number. 3. Size and thickness. 4. Speeds and horsepower to be transmitted. Automatic Heat Control ' 1. Make and kind of system; electric, compressed air, etc. 2. How blast convectors are to be controlled. 3. How dampers are to be controlled. , 4. Transformers, air compressor, etc. 5. Piping or wiring. 6. Schedule of thermostats, valves and dampers. Indicating and Recording Equipment 1. Thermometers.. 2. Pressure gages., 3. Meters. 4. Scales. 540 Chapter 34---Specifications ^Sit for Maintenance Sacking and gaskets. [lubrication. ^ffMf&aupteproiratsl-, anchors andJ expans.ion d,evi.ces. gjfjasulation and covering. felcSinage and waterproofing. and Trench Covers glSFirnished by whom. ^Material, size> etcRpProvision for drainage. Jn%s, Machinery Guards, Bird Screens, Etc. gllsMaterial. ' j^l.Method of fastening. BPainting "gfi.^What is to be painted. Materials and workmanship. Bi- Painting of insulation. GENERAL NOTES ...... -pfThere is a tendency to use boilers with jackets of metal outside of the insulation IWaagSiiiSnnnunrffiiildillClttt.rrjfboaairhnttehiioobeaaonnrttexttooihhbsffeettoeeailnnppeteoorasanii.nnrrdeette^Soonuutfscfeseyeemmddltaaoisoonnuuuuuutstffsssaaeeiiccdddutteeuuuirrnooee....ffup,bblLLarriiciiggccehhkkott,,eef-ssnn-t-ttcch-ee-aa-eee-ss-ll-ee-ncc-mm-oaa--sneesiinn-nnfttiggrssfefooptrrorohipoworfreicuzvaoemnnnvttuaasul nor.aenutu--tthhrnoerit-zou-e-ub-dt-su--ia-ldaierr 8ftfie insulation for large^ sbtreeeelc-hheinagtinsghobuolidlebrse. kept at least H in. away from the flat n --- ins- An excellent way to accomplish this is to provide rings of gle or tee steel around the breeching about 30 in. apart, with SA in. or in. steel fjrBds between them, the blocks of insulation being wired to the rods. Provision for expan sion iand contraction of the insulation always should be made on large breechings. |p3c:Light weight copper tubing and bronze fittings, also special cast metal piping, are larailable and may be used where rapid corrosion is apprehended, or where the pipes $fiil;tie inaccessible due to the exigencies of building construction. fpleatiirg pipes should not be buried in tile, as for instance, under a concrete floor. If Esomejunusual condition should require that pipes be buried, it is advisable to use an ||Stra-durable construction such as copper, brass or cast iron, making provision for g_S|bp4a.h'Isfioannaanidr wcoanshtrearcotiroan wanadtefrotradnrkainisalgoec.ated above inhabited quarters in a building, Kit'is-recommended that the floor under the entire equipment be made water tight with jpbpper or a membrane waterproofing course, and that all service pipes be brought around. jphis roof rather than through it. Inasmuch as it is difficult to make and to maintain Watertight tanks, pipe sleeves, overflow boxes, etc., it is recommended that an artificial jiToof he inisstasullegdgeusntedderththaetma.utomatic water feeders be installed where automatic fuel gmirning equipment such as electric stokers, oil burners and gas burners are used, with' gwulers which depend on a locally-pumped supply of feed water, so as to save the boilers i'viP.'case of pump failure. There should also be provided thermostatically-influenced gideyiees which will stop the fire in case the products of combustion leave the boiler at a iggbperisatpurraectsiocahligtoh apsumtopinadllicoaftethloewbwoialeter r.feed water through a pneumatic tank or 3 hydrostatic pressure tank, allowing the automatic boiler feeders to handle all 541