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12-303-038. I . I . � ! I ---- � FIVAC SPECIFICATION I I . I . � I . I I ,: ......... 1, . . I ­ 11 . I - I I , ­ . . . I . I I . . . . I I I I I I - _,_ . , . . �� . � , I . " , . 0.1i I I . I ,� I 0 � ,�, ,,, I - � � 1 cn: � I U I I . I heavy-duty trapeze hangers where possible. Where piping of various sizes Is supported together by Wth fiberglass Insulation construct casings of 16-go minimum exterior and 20-ga minimum manual reset. Electrical contractor shall furnish, HVAC Contractor shall mount & Electrical contractor Install Isolation valves In all branches serving two or more pieces of equipment. 1� I IX .. � . 0­111 11 I I I trapeze hangers, space hangers for smallest pipe size or Inatall Intermediate supports for smaller Interior liner mill galvanized steal, designed to withstand specific operating pressures. Wlth foam shall wire a UL listed photoelectric smoke detector per local code authority having jurisdiction. � W, 0 GENERAL: I I diameter pip" as specified above for Individual pipe hangers, . . gs -go minimum interior . - � W - to . I � , Elcon, or approved equal. liner mill galvanized steel, designed to withstand specific operating pressures. Provide casing 10. Unoccupied Mode Install volves at the Inlet land outlet of each terminal With Unions or flanges and shutoff/boloncing Z < . General Provisions of the Contract Including General and Supplementary Conditions and General Individual pipe hangers to be Anvil International Clevis Hanger Fig. 260 Injected Insulation construct casin of 18-ga minimum exterior and 22 Requirements apply to work of this section. , . I I Fan Shutdown - Hard Wired I � W r- �_ i . a I valves, I . Z . 0 Rod sizes to conform to the following* 3/8" rods for 3/4"�2" pipe; 1/2" rods for 2�1/2"-3" pipe; pan Is and/or access doors that are easily and quickly removable for inspection and access to During the unoccupied. mode of operation, the outdoor and return air dampers shall be positioned to I I I 'W - ,. I SCOPE: 5/8" for 4"-5" pipe and 3/4" for 6 pipe. " Z . 01.1 I 1; �., 11 . Internal parts. Doors shall be Insulated, hinged, and goaketed with latch and handle assemblies. provide 1100X recirculated air only. The Supply Fan shall be cycled to maintain the spate temperature � I �_ V, 14, � �4 M ., 1� - I ulation at all hanger. . I W!" " _- � 0 , . I I � I ': IV, 0, ,., , �:, I . 0 W I work required to Install a complete beating and air conditioning 9 . " at The base bid Includes furnishing all materials, labor, tools, and equipment and the performance of all, Hangers shall be sized to allow insulation to pass through unobstructed, provide saddle support for Panels Shall be sealed with closed cell foam gasketing. Connecting channels shall be insulat � setback. I I , � I yatem as outlined herein. Ins to prevent sweating. I I ad 11. Shut Down I . Refrigerant Piping Shall be sized and Installed per manufacturer's recommendations Including all � 1 :. , - . 1J :j,� 10 a I necess -.�( :id , L) - tel . I . Hanger spacing for steel piping unless otherwise noted Is to be as follows: 1-1/4" or smaller to be Provide reinforced points of support for either setting or hanging units, At shutdown the air handler shall go to fall safe position. Fall safe position Is defined by the ary traps. double auction risers, etc. and pipe size Increases based on actual layout, distance - I , 0 00,vi QUALITY ASSURANCE: 1 8' on center; 11-1/2*�2" to be 10' on center, 2-1/2" and larger to be 12' on center and at each Cover casing and frame with protective finish on both sides. following: The supply fan Is off, the outside air damper to closed, the electric heat Is on and the and unit sizing. . � � 2 IL u � C-1 0 0 1 1 C I ", lxl� � 'I'll 00 I-6, 0 � . - Provide a complete Installation in conformance with the following standards. change of direction. Hanger spacing for copper pipe to be as follows: 11" or smaller 6' on center, Casings: Casings for Interior use shall be 2 solid double walled construction with 1-34 lb/cu. ft cooling valve Is closed. . � I ... . I l`_ < loco Z . . . I 0 � , , , - .Ld C,4, 1 La , 11 I AGA: American Gas Association 1-1/4" or larger 8' on center. Piping shall be also supported (it each change In direction, at valves, densit Insulation between panels or shall be foam Injected with Insulation equal to a minimum � 0 ASHRAE: American Society of Heating, Refrigerating and Air Conditioning Engineers . and at equipment. I I y 12. If the condensate drain high water float switch Is tripped, the system shall be alarmed, Install refrigerant piping with 1/4" per foot (1%) downward slope In direction of oil return to ix, M 't ,C4 'Zi :, :� 2 1 1 of R-12. the chilled water valve compressor. I I I � I' I] - , 0 NFPA.- National Fire Protection Association I I . shall be closed, the outdoor air damper is closed and the supply fan is off. � I I _� �J , -, �, � 4 , "" " �, � . �i . 1 :41 1 .1 .. I­_ � -1 SMACNA: Sheet Metal and Air Conditioning Contractors National Association. I . . I . I . Insulation: Insulate all unit casing from air entrance to air outlet from unit, Including bypass Clean refrigerant piping by swabbing with dry lintless (linen) cloth, followed . LAJ - �A �1. I . . duct If used. Insulate framing angles exposed to air stream. . I . I . by refrigerant oil scak,4d . . I ,,, -< < 0) I , illc� 0 Statewide Building Code � . Securely attach Insulation. of EXHAUST FANS . swab. Remove excess oil by swabbing with cloth soaked In high flash point petroleum solvent, I .J X :Z ") M . . Uniform Mechanical Code I � CEILING AIR DIFFUSERS: sufficient thickness and density to prevent condensation from forming on unit cosingi Protect � Toilet Exhaust Funs (manual) . I I 11C !I 010 W� 3: Lu I I I . I . Diffuser Faces: I . Insulation against deterioration from air currents. . Exhaust fans shall be controlled by local manual switch furnished, Installed and Wired by electrical I Bleed dry nitrogen through refrigerant piping during birozing operations. I � y < 2: i6 E n I I � I Z I.- . . Provide Insulation with fire-ratording characterl tics, complying with NFPA 90A. Insulate drain I contractor. Wien activated, exhaust fan motor domper shall open and fan shall start. . I I I I co ! PERMITS, FEES, INSPECTIONS, LAWS, AND REGULATIONS-. I Square: Square housing, core of square concentric louvers, square or round duct connection. pans as required to prevent condensate formostion on unit exterior at ambient conditions to (indicated by EC On MESCH schedule) Prior to Initial operation, clean and test refrigerant piping In accordance with ANSI 831 1 .5, 143 . I 0 1 ; Permits and fees of every nature required In connection with this work shall be obtained and paid Linear: Extruded aluminum continuous slot, single or multiple. be encountered, I . 9 . I 0 W) L . � ution to test all joints. M � . . Provide a vapor barrier between Inner wall and Insulation. Foil faced Insulation is not Electrical contractor Perform final test with 27" vacuum, and then 200 psi using halide torch. System must be entirely � for by this contractor who shall also pay for all the Installation fees and similar charges. Lows and CONTROLS I � "Refrigeration Piping". Perform Initial test with dry nitrogen, using soup Sol W I m I regulations, which bear, upon or affect the various bronches of this work shall be complied with by Diffuser Mountings: � I acceptable. I will provide power wiring. HVAC contractor shall provide all the low voltage I . � (D 0- , wiring of HVAC units and controls, t ertndstate and controllers, Thermostat shall be by the look-free. Install core In filter dryer after leak test bu before evacuation. Evacuate refrigerant I Each module/section shall contain a 4. minimum full perimeter base roll with Intermediate lateral manufacturer of the HVAC unit (heat/cool/quto/off) with night setback. Provide plastic protective system with vacuum pump; until temperature of 35 degree F Is Indicated on vacuum dehydration � this contractor and are hereby made a part of this contract. All work, which such laws require to Surface Mount: Diffuser shall have rolled edge below finished ceiling for surface mounting or diffuser h t be Inspected, shall be submitted to the proper public official for Inspection and a certificate of final � shall be furnished with accessory plaster frame. I � . supports to be determined by unit manufacturer. Each module/section shall be able to be I � approval must be furnished. . � . . � supported Independently from the bass rall(s). I cover for all thermostats. � I Indicator. During evacuation, apply heat to pockets, elbows. and low spots In piping. Maintain vocuum I I WORK IN EXISTING SPACES: I I . . Lay-in: Diffuser housing sized to fit between ceiling exposed suspension tee bars and rest on top Sections . . on system for minimum of 5 hours after cloolng valve between vacuum pump and system. Break I .. I surface of tee bar, , . I I . I CONTROL WRING I . vacuum with refrigerant gas, allow pressure to build up to 2 psi. Complete charging of system. using General: Care shall be taken when working In existing spaces so as not to damage existing walls I Construct coils with copper tubing primary surface and aluminum secondary surface Including fine Low Voltage Thermostats now filter dryer core In charging line. Provide full operating charge. he .J = Z 0 1 1 40 and ceilings where work Is being performed. . I Diffuser Dampers: I I bonded to tubes by method approved by specified manufacturer. For spray coil applications, Low voltage thermostats shall be furnished, Installed and wired by the HVAC contractor. The electrical � I I I . Z IL I Where work Is b Ing performed above ceilings, and the architectural drawings do not construct primary and secondary surfaces of copper. Coll tube wall Ickness shall be 0.024. contractor shall provide 4" square x 1- 1/2" deep wall outlet boxes (with single-gang rings) for all at a de minimum 3-inch deep P-trap at coil section drain connection. Install oil condensate piping . I OK I Ceilings: a Opposed Blade Dampers: Multiple opposed blade dampers connected to linkage adjustable from face th I Provi Uniform grade of 1/8 Inch per 1 foot downward In the direction of flow to the nearest drain indicate ceiling modifications by the general contractor, It shall be the responsibility of this of diffuser with key. . I Provide heating and cooling coils of scheduled capacity, mounted In Unit in manner permitting I thermostats/sen sore. The electrical contractor shall provide one 3/4" empty conduit from each . contractor to remove and replace existing ceilings where work Is being performed. In those � . removal, of the following types: . , thermostat/sensor location, turned out above accessible ceilings (in joist space or against overhead . loc I ation. I . I I a . Instances, � all repair and Installation of new grid, ceiling panels, etc shall be the responsibility of this Integral: Combination volu Provide chilled water and hot water coils with threaded connections. Provide coils with drain I I - r to 1119 contractor. Match existing finishes. . . . I me control and pattern. adjustment for linear diffusers. and vent connections. . slob/deck). The HVAC/Temperature Control Contractor shall provide all other necessary conduit, � PIPING INSULATION: � . I � I r I . I a. Coll headers shall be copper. I raceway and wiring related worki Conduit shall be Identified In calling cavity and shall be provided I I I . 0 1 Walls & Floors. It shall be the responsibility of this contractor to patch existing walls and floors � Fire Damper. Combination adjustable opposed blade damper and fusible link fire damper. with UL b. Coil casings and holding racks shall be galvanized. With sweep bends, bushings and drogline. . Provide 1" fiberglass insulation on chilled water piping. � . I and match existing finishes where work 18 being removed or Installed and patching Is being approved link and assembly designed to meet requirements of NFPA 90A. c. Chilled Water Coils shall be Q minimum 6 row coil, maximum 11 fins per Inch. seal Control Wiring Requirements and Installation Methods I . . I � . Provide 11" fiberglass Insulation on concealed condensate drain piping. I cc � Insulation shall have a minimum R value as required by Code. cc 11 . n = I Diffuser Acoustic Performance: NC less than or equal to 30 Provide electric heating coil with automatic reset thermal cutouts for primary overtemperature Except where specifically Indicated otherwise above. the HVAC/Temperature Control Contractor shall - All Insulation and adhesives shall have a flame spread Index not more than 25 and a smoke 0 performed, unless noted otherwise on the architectural drawings. Gen . I I � � DEMOLITION: . . Diffuser Accessories: Plaster Ring: Perimeter ring designed t protection and with load-carrying manual reset thermal cutouts. factory-wired In series with provide all electrical work as required for all temperature control related wiring (i.e. I Any Equipment to be demolished shall also Include the demolition of any and all ductwork, piping etc anchor. . 6 act a . 9 plaster stop and diffuser each heater stage. for secondary protection. Include overcurrent cutouts and sub-circuit conduit, raceway, developed Index of not rhore than 50. 1 . serving at served by the equipment, all accessories, air devices. wiring, gas piping, venting. control . fusing In assembly, and construct with the following additional construction features: outlet boxes, junction boxes, wiring. etc.) In accordance with Division 16 requirements, All conduit . � . . I it be . wiring and power wiring associated with the equipment. . Diffuser Finishes: White Enamel: Semi-gloss white enamel prime finish. I I Finned Tubular Electric Coils: Construct coils with resistance wire of 80% nickel/20X shall be 3/4" minimum. . DUCTWORK INSULA11ON: . I I � . . 1. Demolition shall be coordinated with all trades. All materials shall be turned a r to the owns, ­ I chromium. mounted In copper plated steel tube and surrounded b Corn ­+.A P vide Insulation on all come I A I I disposed at the owner's direction. I I I Manufacturer: Subject to compliance with requirements, provide diffusers of one of the following-, .7 F noslurn-oxide powder. Provide spiral-wound copper plated steel fins continuously bm,aged to tubes. Coordinate all thermostat/sensor locations In field (case by case) with Architect, Owner and Electrical a a supp y, return and outside air ductwork. All liners, Insulation and � adhesives shall have a flame spread index not more than 25 and a smoke developed index of not Contractor is responsible for reclaiming any refrigerant In association with the demolition In Anemostat Products Div., Dynamics Corp. of America. Contractor to ensure that they are placed In locations that Will hot interfere with furniture, more than 50. : accordance with all local, state and federal regulations, I Any roof or wall penetration shall be patched watertight to the satisfaction of the architect, I Metal-Aire Titus Products Div., Philips Industries, Inc. . Coll Sections: Provide common or Individual casing for heating and cooling coils as required. Design Internal structure of coil section to allow for removol of coils, and provide suitable baffles equipment, artwork, wall-hung pecialties, room finishes, etc. All thermostat/sensor wall locations Indicated on HVAC drawings or: schematic only and must be verified case-by-case prior to I . I � I Rigid Fiberglass Ductwork Insulation: Gloss fibers bonded with a thermosetting Comply I I I . Tuttle and Bailey. I I . to assure no air bypass around coils. Provide condensate pans and drain connections to cooling rough-in. � resin. with ASTM C 612, Type IB, without facing and with vapor barrier all-service jacket manufactured from . Price coil sections of sufficient size to contain and remove coil condensate. Insulate coil section "Insulation" All electrical work as described In this specification shall be per the latest editfoh of the National kraft paper. reinforcing scrlim, aluminum foil, and vinyl film. Insulation shall have a minimum R No-ducts, piping, fixtures or equipment shall be concealed or covered until they have been Inspected I � . casings and drain pans as specified in paragraphi For reheat coils, make provisions . Electrical Code (NEC) and per applicable state and local codes. volue as required by Code. I I and approved by the Architect and the ,Inspector who shall be notified by the contractor when the LI RS & GRILLES: . . to allow simultaneous dehumidification and reheating at maximurn cooling face velocity I work is ready for Inspection. . � � Work shall be completely Installed, tested and leak tight before inspection is r'equired. All tests shall . Steel Construction: Manufacturer's standard stamped sheet steel frame and adjustable blades, . . catalogued by manufacturer. . . Multiple Coils: Provide multiple coils as required by unit manufacturer. All multiple coils shall Where 'free-air" Installation methods (either exposed above the ceilings, in bridle rings or In cable trays) are permitted under Division 16 above Flexible Fiberglass Ductwork Insulation: Gloss fibers bonded with a thermosetting resin. Comply with ASTM C 553. Type 11, without facing and with vapor barrier all-service jacket from I be repeated to the satisfaction of those making the Inspection. I I . . Register Dampers: � . be piped with a common supply and return header with branch piping to each coil. Each coil connection shall have a ceilings, provide plenum-rated cables wherever plenum ceilings (if any) exist and Install as defined under Division M Install low voltage circuits, located In manufactured kraft paper, reinforcing scrim, aluminum foil, and vinyl film. Insulation shall have a minimum R value i . METAL DUCTWORK � I . I Opposed Blade: Adjustable opposed-blade damper assembly, key operated from face of register. Register and Grillo Finishes: union and 8hutoff. Balancing valve, control volve, and thermostats shall be provided for the header supply and return lines. Verify quantity of coils for each concrete slobs and masonry walls, In Inaccessible locations, or exposed In occupied areas, in as required by Code. I . . . buCTWORK I I Register and Grille Finishes: White Enamel: Sernl�gloss white enamel prime finish. unit and provide piping to each separate coil. Face . electrical conduit regardless of what wiring methods are permitted under Division 16. . � Vapor Barrier Material for Ductwork: Paper-backed oluminum-foll, except as otherwise Indicated; I MATERIALS I . I Register and Grille Acoustic Performance: NC less than eaual to 30 Velocity. Maximum velocity across coil shall be 500 fpm unless noted otherwise on Where cable tra or bridle rin - - ­tA A t, 4" strength and permeability rating equivalent to factory- a pDI led vapor barriers on ad'olnin A-+- 0, r_xposed Ductwork Materials: Where ductwork Is Indicated to be exposed to view In occupied spaces, I scrieclulea. Id F, - . y v electrical conLroctor Tor low voltage cables, insulation, where available; with.following additional construction characteristics: � V - 71 1 N. FIELDUR R0. I I Provide IAQ galvanized drain pan (sloped In two different directions), located under cooling coil these raceways may be utilized for control wiring by this contractor (provide special color coded � I I provide materials which are free from visual Imperfections Including pittin seam marks, roller marks. Manufacturer, Subject to compliance with requirements, provide diffusers of one of the following: jackets, label cable Jackets per Division 16 and group control wiring cables together). Provide High Puncture Resistance, 1� Low vapor transmission (for ducts In exposed areas: Mach. Rooms, etc.) I stains and discolorations, and other Imperfections, Including those Alch would Impair painting. Anamostat Products Div.. Dynamics Corp. of Americo. I section, extensive enough to catch condensate leaving the coil at highest ARLINGTON,. TX 76012 � Exposed ductwork which Is to be pointed shall have point grip applied. I Metal-Aire I . velocity. Provide at least one drain connection at low point In drain pan. catalogued face conduit drops from dable troy/bridle ring paths to wall outlet boxes and equipment unless directed � I � I I I I I PH: (817) 635-5696 1 ock Titus Products Div., Philips Industries, Inc. . Control Valves and Damper Actuators: Shall be furnished, Installed and wired by Temperature Regardless of permitted methods In Division 16, oil cables/wiring Installed concealed by gypsum . Moderate Puncture Resistance: Medium vapor transmission (for ducts In concealed areas). Sheet Metal; Except as otherwise Indicated, fabricate ductwork from galvanized sheet steel, I otherwise under Division 16. forming quality-, with G 90 zinc coating and mill phosphatized for exposed locations. Minimum gauge Tuttle and Bailey. . Controls Contractor. FAX: (817) 635-5699 shall be 24. Price 1 board, masonry or other Inaccessible materials In walls or above ceilings shall be installed In conduit, GUARANTEE � I � I . I �� - ��� I I Provide Forward Curved fans specifically designed for variable frequency operation and suitable 3/4" minimum. � . I . � MISCELLANEOUS DUCTWORK MATERIALS . FANS AND VENTILATORS for Class 11 service. Provide adjustable motor base, adjusted with mounting bolts, to provide The contractor shall provide a guarantee In written form stating that all work under this section shall � I I Volume Dampers: Provide volume dampers In all branch ducts or as required for balancing to variation In center distance. Motors shall be ODP. Provide locking nuts, or similar devices, to All conduit, bridle rings, raceway, outlet boxes, etc, necessary for complete operational Installation of be free of defective work, materials, or parts for a period of one year from the date of owner's final required air flows. I CEILING VENTILATORS I secure base In proper position, Provide belt-driven fans with adjustable pitch pulley permitting control wiring shall be provided (furnished and installed) by the temperature control contractor In acceptance and shall repair, revise or replace at no cost to the owner any such defects occu n . Centrifugal Ceiling Exhcusters: Provide centrifugal ceiling exhousters, designed for ceiling or wall fan speed to be varied. Select pulley for mid-point of adjustable range. Design fan shafts so strict compliance with Division 16 documents. Coordinate all work with all other applicable trades within the guarantee period. Contractor shall also state in written form that any Items or rri g I . I I I Fittings: Provide radius type fittings fabricated of multiple sections with maximum 15 dog. change mounting, of type, size and capacity as scheduled. as not to pass through first critical speed when unit comes up to rated RPM. Provide Including the electrical contractor. occurrences arising during 'the guarantee period will be attended to In a timely manner and will In no I of direction par section. Unless specifically detailed otherwise. use 45 deg. laterals and 45 deg. I grease- I ubrica ted fan bearings with exte a' accessible fittings for lubrication. Statically and c (4) working days from date of notification by owner. I Where 90 deg. branches are Indicated, provide conical type dynomically balance fan assemblies in f, - lying after final assembly. I � � elbows for branch takeoff connections, Provide AMCA Certified Ratings Seal. nh.u, Provide all required conduit work to and between equipment In a manner compliant with that I I � I . . I tees. . � All fan motors shall be of highest efficiency possible, with Premium Efficiency rating. All fan I .e. between VAV boxes, to boilers. starters, condensing units, etc. as applIcoble). I I I motors must be inverter duty rated and AHU manufacturer shall factory Inverter balance the fan I : I I . I Type: Provide galvanized steel housing lined With acoustical Insulation, adaptable for ceiling or wall motor through the entire operating range. .A/C motors shall be rated for both constant and Install contr I wiring without splices between terminal points, color-coded. Install In neat : I Duct Sealant: Non-hardening, non-migrating mastic or liquid elastic sealant, type applicable for Installation. Provide centrifugal fan wheels mounted on motor shaft with fan shrouds. all removable I fabrication/installation detail, as compounded and recommended by manufacturer specifically for foe service. Provide Integral backdraft damper fan discharge. variable speed applications. workmanlike arrianner, securely fastened. Install In accordance with National Electrical Code and per . I I sealing joints and seams In ductwork. . Maximum Motor speed shall not exceed 1750 RPM. Division 16. . � I I . . . I . � Grillo: Provide steel louvered grille with flange on Intake with thumbscrew attachment to fan Provide full access door with hinges. gasket and latch. The fan assembly shall be Isolated *am . � ! I I r I . . . I I I Duct Cement: Non-hardening migrating mastic or liquid neoprene based cement, type applicable for housing. the cabinet by steel springs with 1 Inch deflection for fans through 24-% Inch diameter, 2 lnch Install circuits over 25 volt with color-coded No. 12 wire In electrical metallic tubing, per Division 16. : . I fabrication/Installation detallp as compounded and recommended by manufacturer specifically for deflection for fans 27 inches through 36-% Inches diameter and 2-% Inch deflection for Install circuits under 25 volt with color-coded No. 18 wire with 0.031" high temperature (105 degs. F � , I . fans : I I cementing fitting components, or longitudinal seams In ductwork. Motor: Provide permanent split-capacitor motor, permanently lubricated, 40�34 Inch diameter and larger. The springs shall be of free-standing un-housed stable steel [41 degs C]) plastic Insulation on each conductor and plastic sheath over all. Install electronic � I Ductwork Support Accessories: Provide manufacturer's standard roof Jack, wall cap, and transition fittings as Indicated I springs, with leveling bolts selected to a maximum transmissibility of 5 to 10 percent depending circuits with color-coded No. 22 wire with 0.023' polyethylene Insulation on each conductor with I I � � I I . I Materials: Except as otherwise Indicated, provide hot-dipped galvanized steel on drawings or schedules. on the fan RPM and flexibility of the structure on which they are mounted. plastic- jacketed copper shield over all. � I I I I I fasteners, anchors, rods, straps, trim and angles for support of ductwork. I Entire Fen housing shall be galvanized and completely coated with rust-inhibitive primer and � . . Vibration Isolation; Provide spring floor isolators or hangers depending on type of installation, paint to resist corrosion during normal operating conditions. � SMOKE DETECTOR I I I . FLEXIBLE DUCTS: I All constant volume air handlers shall have NEMA 1 starters furnished, Installed and wired at All duct smoke detectors will be furnished by electrical contractor, Installed by the HVAC contractor. I I I . Either spirol-wound spring steel with flameproof vinyl sheathing, or corrugated aluminum. Unless Duct Lining: Provide 1* thick, 3-lb density duct liner a minimum of 5' (five feet) up and down factory by unit manufacturer. and wired by the electrical contractor per local codes. HVAC contractor will Interlock RTU fan with . � I specifically mentioned, the maximum length of flex duct on the supply equals 5 feet. Flex Is not stream of fan. Miscellaneous Sections smoke detector, I I I I I I allowed for return, relief or exhaust applications. The flexible ducts Indicated for Use In the H.V.A.0 Filter Boxes: Provide filter boxes with hinged access doors on both sides of unit (if unit Is � r . I I � I I I shall be so identified. . of the following: either flat or angle type pattern as shown on air handier details, MOTOR OPERATED DAMPERS: � . I . I system shall conform to the requirements of UL 181 for Class 0 or Class 1 flexible air ducts an� Monufqcturer: Subject to compliance with requirements, provide centrifugal ceiling exhousters of one serviceable from both sides. refer to floor plan drawings). Provide racks to receive filters In All fresh air Intakes and exhaust louvers shall have motor operated dampers. Dampers shall be low Flexible Ducts: Where Installed In unconditioned spaces other than return air plenums. provide 1" Acme . I Dampers leak with blade and edge seals. Motor operated dampers shall provided. Installed and wired by the � I I . I .1 . I I I mechanical contractor unless otherwise noted. Provide all necessary transformers, contactors, . � . I I I thick 1-1/2 lb. continuous flexible fiberglass sheath with vinyl Vapor barrier jacket. Breldert Provide Intake and Exhaust dampers with leakage limited to 20 cfm/sq. ft. at 4" w.g. Dampers controls and wiring for Interlocking equipment to motor operated dampers. I I Carnes . . shall be aluminum premium airfoil low leakage type. Blades shall be opposed blade type. The . . I I Flexible Ducts: Installation Is not permitted above drywall ceilings and Inacc I Cook Co., Loren. I I I � I I I I � . essible ceilings. frame shall be fabricated from extruded aluminum. Damper blade ends shall be sealed with TESTING, ADJUSTING, AND BALANCING I . . I � . Greenheck. neoprene flexible edge seal complete with bottom and top blade wiper seals. Damper actuators . I . . I FABRICATION Penn Ventilator Co., Inc. shall be proportional control action, electric motor driven type, spring return or non-spring Test, adjust, and balance the following reachanical systems: � I . . I 1. .1, . . , Shop fabricate ductwork In 4, 8, 10 or 12-ft lengthe, unless otherwise Indicated or required to Jenn Fan return as required, of ample size and power to operate the various dampers and shall be Supply air systems, all pressure ranges including variable volume and double duct systems: . ... � , .11 ;, complete runs. All ductwork shall be Pittsburgh Construction with a minimum of thickness of 24 Twin City Fan & glower � direct-coupled to the damper shaft utilizing I Return air systems. . ... ­­ I'. ., . 'I I I gauge. In addition. ductwork used In systems over 3" W.G. shall have cold a I . a removable splined output hub and manual � I Exhaust air systems. � . I " I � ,.. . I ealant applied. Shop de-clutch laver. Damper actuators shall control the dampers In the Intermediate floating Quality Assurance . . .1. % � . I I fabricate ductwork of gouges and reinforcement complying with SMACNA "HVAC Duct Construction INSPECTION position where mixing or throttling Is required, Damper actuators shall be. selected so that they i I . I I - Standards". I will handle 25X excess damper area above catalog rating. Codes and Standards: . . . I .. . i 1. General: Examine areas and conditions under which power and gravity ventilators are to be Installed. Air Filters AABC: "National Standards for Total System Balance". � I . I I I I ,.', . . . LINED DUCT Do not proceed I with work until unsatisfactory conditions hove been corrected. Provide air filters to fit In filter box, with a Maximum filter face velocity of 500 fpm, of the I ASHRAE: ASHRAE Handbook, 1984 Systems Volume, Chapter 37, Testing, Adjusting, and Balancing. I I I . I ,. I following type: . I I ,2f� , X , SUBMITTALS . �,- '­I_ .. I Fabricate ductwork with duct liner In each section of duct where indicated. Laminate liner to Internal Coordinate ventilator work with work of roofing, walls, and ceilings, as necessary for proper Disposable Type: Provide 30% efficient disposable type air filters 2" thick, consisting of . � � I I I . surfaces of duct In accordance with Instructions by manufacturers of lining and adhesive, and fasten . Interfacing. . � viscous coated fibers with filtering media encased In fiberboard cell sides having perforated Certified Reports: Submit testing, adjusting, and balancing reports bearing the seal and signature of I I . a III a metal grids on each side to provide media support. I � � I noted. Size of ductwork shown on the drawings Is free net area, outside dirnension of duct . � I . with mechanical fasteners. Duct liner to be 3-115 density for acoustic requirements 1" thick or as Provide access door In duct below ventilator to service damper. the Test and Balance Engineer. The reports shall be certified proof that the systems have been : . I UJ � . cad n accordance wl h he referenced stun ards; are an accurate I I ! I (.) to w n ad Solder bottom joints and up 2" of side joints of duct under roof ventilator to retain any moisture Provide filters with clean resistance not exceeding 0.10* W-g- at face velocity of 300 fpm, and representation of how the systems have been Installed; are a true representation of how the systems : I . IRt I to be increased If lined duct Is used. tested, adjusted, and bolon I t t d Size of ductwork shown on the drawings is free net. area, outside dimension of ducts . will need to be entering ventilator. . ASHRAE weight arrestance efficiency of 70-82%, based on final operating resistance of 0.5" w.g. are oper . I It- _�% � Increased if lined duct Is used. , Access: I Accessories I . acc rate ating at the completion of the testing, adjusting, and balancing procedures; and are an . 1 45 Cl) . Duct Liner: Fibrous glass of thickness Indicated, 3 Provide access and service space around and over fans as Indicated, but In no case less Flexible connection of fan discharge to module . U record of all final quantities measured, to establish normal a I perating values of the systems. I . 0- cl) .r V -lb density, All liners, Insulation and adhesives than that recommended by manufacturer. Follow the procedures and format specified below: . I I I . shall have a flame spread Index not more than 25 and a smoke developed Index of not more than Extended lube lines for all ran motors i - 50. . . I I I I .1 il­ < ; I W a ., . � I Air filter gauges, furnished and Installed by the temperature controls contractor. shall be Final Report: Upon verification an i . Roof Curbs: Furnish roof curbs to roofing Installer for Installation. Install according to roofing mounted on AHU with range from 0 d approval prepare final reports, type written, and organized and . . (1) - mounting bracket, etc. I i . I Z W W . I Duct Liner Adhesive: manufacturees recommendation and specifications, . -1.0 Inch wg. Include necessary tubing, gauge connections, formatted as specified below. Submit 2 complete sets of final report to the owner / landlord. : I I � =) > 0 1 = Duct Liner Fasteners: Comply with SMACNA HVAC Duct Construction Standards. . Access Doors - Install per the following: I Report Format: Report forms shall be those standard forms prepared by the referenced standard for I � - _J . . Electrical Wiring- Install electrical devices furnished by manufacturer but not specified to be Full Access doors on all sections other than calls with the same wall construction as unit each respective Item and system to be tested, adjusted, and balanced, . I I I (1) W , . INSTALLA11ON OF METAL DUCTWORK factory-mounted. Furnish copy of manufacturer's wiring diagram submittal to Electrical Installer. Coordinate all pipe connections and routing to avoid interference of access doors, permit QUALIFICATIONS i . I . . � I-- a , . General: Assemble and install ductwork In accordance with recognized industry practices which will . , removal of filters and coils, etc, ! . < I­ .;j a and Testing Agency, approved by � V) W Verify that electrical wiring Installation Is In accordance with manufacturer's submittal and installation � Belt Guards: Comply with requirements specified by OSHA and fabricate according to SMACNA'a the Engineer, and a member of Associated Air Balance Council (AABC) or NEBB, which specializes In I (L V) < I achieve air-tight (5X leakage for systems rated 3" and under; 1% for systems rated over 3") and requirements of Division-16 sections. Ensure that rotation Is In direction Indicated and Intended for "HVAC Duct Construction Standards"; I The contractor shall procure the services of an Independent Balonc . � I 0 Z a noiseless (no objectionable noise) systems, capable of performing each indicated service. Install each 0.1046-inch thick, 3/4-Inch diamond-mesh wire screen. the balancing and testing of heating, ventilating and air conditioning systems. to balance, adjust and . I � . proper performance. Do not proceed with centrifugal fan start-up until wiring Installation Is welded to steel angle frame; prime coated, Belt guards shall be provided regardless of unit size. test alI air and water systems and equipment as herein specified. All work by this agency shall be � . . 1: :3 X . run with minimum number of joints. Align ductwork accurately at connections, within 1/8" acceptable to fan Installer. . misalignment tolerance and with internal surfaces smooth. Support ducts rigidly with suitable ties, . Provide the following AHU sections: . done under direct supervision of a qualified heating and ventilating Engineer employed by this agency. : . � 0) 0) I-- � ____) braces, hangers and anchors of type which will hold ducts true-to-shape and to prevent buckling. LIY , See Air Handling Unit Elevation(s) on drawings for AHU. configuration(a). All Instruments used by this agency shall be accurately calibrated and maintained In good working I LU T- =) Support vertical ducts at every floor. . Acceptable Manufacturers I � . Testing: After Installation of ventilators has been completed, test each ventilator to demonstrate order. I . I . I . X CD 0 prop � � r*_ Manufacturer: Subject to compliance with requirements, provide air handling units of one of the �_ in U) � following: � . I I nt. Install malfunctioning units, then retest to demonstrate comp lance. Replace units, which cannot be Carrier Air Conditioning. I . . U Sealing., Seal all longitudinal seams. S's and drives and all joints with mostic or came .er operation of units at performance requirements specified. When possible, field correct according to SMACNA standards. I I SEQUENCING AND SCHEDULING I ­ . satisfactorily corrected. Testj adjust, and balance the air systems before hydronic, steam, and refrigerant systems. I I I . I I I McQuay, Inc.; Air Conditioning Div. Test, adjust and balance air conditioning systems during summer season and heating systems during I � . Balancing Dampers: The sheet metal contractor shall be fully responsible for Installing balancing ADJUSTING AND CLEANING - Trans (The) Co. . winter season, Including at least a period of operation at outs[de conditions within 5 deg F wet bulb . W dampers In the ductwork, (whether shown on the drawing or not) In order to arrive at the Intended Cleaning: Clean factory-fintshad surfaces. York International temperature of maximum summer design condition, and within 10 deg F dry bulb temperature of I . I I I air flow. The balancing sub�controctor shall provide direction and assistance In determining locations Repair any marred or scratched surfaces with Magic Aire minimum winter design condition. Take final temperature readings d ring a osonal operation. . . I I manufacturer's touch-up paint. . . EXECUTION I I where dampers are required. Additional dampers, if required shall be Installed at no additional cost to I Check all filters for cleanliness, provide new as required. Check U damp rs (vo Um nd re) for I I 111.11 � � I the owner. SPARE PARTS I . INSPECTION : I 0 a fi IX . =) . I correct and looked position, and temperature control for completeness of Installation before starting � �_ I . . Wall Penetrations: Seal and pack around all ducts and piping sleeves which pass through walls that General: Furnish to Owner, with receipt, one spare set of baits for each belt drive power ventilator. Examine areas and conditions under which air handling units are to be Installed. Do not fans. Place outlet dampers In full open position. Lubricate all motors and bearings. Check fan belt � >'Mmi., extend to bottom side of structure and rated walls. 11 � I I proceed with work until unsatisfactory conditions have been corrected In manner acceptable to tension. Check fan rotation. I I _J Field Fabrication: MODULAR INDOOR CENTRAL-STATION AIR-HANDLING UNITS I Installer, . I Open valves to full open position. Remove and clean all Strainers. . I I I � . =) . Complete fabrication of work at project as necessary to match shop-fabricated INSTALLATION OF AIR HANDLING UNITS Set temperature controls so all . � 0 . . I work and accommodate Installation requirements, DESCRIPTION OF WORK Coordination., Coordinate with other work, Including ductwork, floor construction, roof decking, coils ore calling for full flow. � � I � . LU � I . . I . Types of packaged air handling units specified in this section include the following: and piping, as necessary to Interface Installation of air handling units with other work. Air balance and testing shall not begin until the system has been completed and Is In full working I I I . > , . ow . Routing: Locate ductwork runs, except as otherwise Indicated, vertically arid horizontally and avoid Indoor draw-through. . Access: Provide access space around air handling units for service as Indicated, but In no case order. The Contractor shall put all heating, ventilating and air conditioning systems and equipment 0 1 � . I diagonal runs wherever possible. Run ductwork In shortest route which does not obstru Refer to Division 26 sections for the following work; not work of this section. less than that recommended by manufacturer. . Into full operation and shall continue the operation of some during each working day of testing and I : � _J I I balancing. The contractor submit within 30 days after � . Limit factory-installed by manufacturer. submittal data for the testing and balancing of the air conditioning. heating. and ventilating systems. I � construction, columns, and other structural and permanent enclosure elements of building. I Shall , at useable Power supply wiring from power source to power connection on unit. include starters, Mounting: Suspend air handling units on vibration Isolators, In accordance with manufacturer'S t space or block access for servicing building and Its equipment. Hold ducts close to walls, overhead disconnects, and required electrical devices, except where specified as furnished, or Instructions. . receipt of con roct 8 copies of Insulation thickness, If any. -operated equipment Units; and between equipment and general arrangement of piping, fittings, and specialties. The Air Balance and Testing Agency shall provide proof of having su . acessfully completed at least five . clearance to 1/2" where furring Is shown for enclosure or concealment of ducts, but allow for Interlock wiring between electrically Comply with requirements for piping specified In other Division 23 Sections. Drawings Indicate Where possible, locate insulated ductwork for 1" clearance outside of field-installed control devices. projects of similar size and scope. I . Division 26 sections: ntractor shall Include the additional cost to change every fan factory Installed I . I I in mdchanlcal shafts, hollow wall construction or above suspended ceilings. complying with requirements of Hot and Chilled Water Piping: Comply with applicable requirements In Division 23 Section sheave, pulley and/or belt of In order to obtain the design air flows . � . 02,29,12 FINAL ISSUE Insulation. Wherever possible In finished and occupied spaces, conceal ductwork from view, by locating Provide the following electrical work as work of this section, Install piping adjacent to air-handling unit to allow service and maintenance. Do not encase horizontal runs In solid partitions, except as specifically shown. Coordinate layout with suspended ceiling and Control wiring between field-installed controls, indicating devices, and unit control panels. . 'Hydronle Piping." Install shutoff valve and union or flange at each coil supply connection. I I . lighting layouts and similar finished work. submittals . . � Install balancing valve and union or flange at each coil return connection. PERFORMING TESTING, ADJUSTING, AND 13ALANCING � I Product Data: For each air-handling unit Indicated. Connect condensate drain pans and extend to nearest equipment or floor drain. Construct deep Perform testing and balancing procedures on each system Identified, In accordance with the detailed I I .Electrical Equipment Spaces: Do not route ductwork through transformer vaults and their electrical Unit dimensions and weight. trap at connection to drain pan and Install cleanouts at changes in direction. procedures outlined In the referenced standards. equipment spaces and enclosures. I � , Cabinet material, metal thickness, finishes, insulation, and accessories. Connect duct to air-handling units with flexible connections. Comply with requirements In . . Fans: Division 23 Section "Air Duct Accessories." Cut Insulation, ductwork, and piping for Installation of test probes to the minimum extent necessary � � I Penetrations: Where ducts pass through interior partitions and exterior walls. and are exposed to Certified fan-performance curves with system operating conditions Indicated. Electrical Wiring: Install electrical devices furnished by manufacturer but not specified to be to allow adequate performance of procedures. . view, conceal space between construction opening and duct or duct Insulation with sheet metal � Certified fan-sound power ratings. factory-mounted. Furnish copy of manufacturer's wiring diagram submittal to Electrical Installer. : I I flanges of some gage as duct. Overlap opening on 4 sides by at least 1-1/2". Fasten to duct and Fan construction and accessories. Verify that electrical wiring Installation Is In accordance with manufacturer's submittal and Patch Insulation, ductwork, and housings, using materials Identical to those removed. . . I � I . substrate. 'Motor ratings, electrical characteristics, and motor accessories. Installation requirements of Division 26 sections. Do not proceed with. equipment start-up until . . � Mere ducts pass through fire-rated floors, walls, or partitions, provide fire dampers and firestopping Certified coil- perform once ratings with system operating conditions Indicated. - wiring installation is acceptable to equipment Installer. Seal ducts and piping, and test for and repair looks. � I . I - between duct and substrate, In accordance with requirements of Division-7 Section "Firestopping". Material gagea and finishes. Crounding: - Provide positive equipment ground for air handling unit components. . I . � Dampers, Including housings, linkages, and operators, I FIELD QUALITY CONTROL Seal Insulation to re-esta.blish Integrity of the vapor barrier; . I . I . . - Coordination: Coordinate duct Installations with Installation of accessories, dampers, coil frames, I Filters with performance characteristics. � . Testing: Upon completion of Installation of air handling units, start-up and operate equipment I . . . . I equipment, controls and other associated work of ductwork system. Shop Drawings. Signed and sealed by a qualified professional engineer. to demonstrate capability and compliance with requirements. Field correct malfunctioning units, Mark equipment settings, Including damper control positions; valve Indicators, fan I I Design Calculations: then retest to demonstrate compliance. levers, and similar controls and devices, speed control � I � ­ I . Calculate requirements for selecting vibration Isolators and seismic , to show final settings. Mark with point or other suitable, � I . . INSTALLATION OF DUCT LINER Vibration Isolation Base Details: Detail fabrication Including anchorages and attachments to CLEANING permanent Identification materials. � I . I . I � I I I � I General, Install duct liner In accordance with SMACNA HVAC Duct Construction Standards. Size of structure and to supported equipment. Include auxiliary motor slides and rails, and base Before startup, clean air-handling units internally on completion of Installation, according to I . . Retest, adjust, and balance systems subsequent to significant system modifications, and resubmit � I I � ductwork shown on the drawings Is free not area. outside dimension of ducts will need to be weights. . manufacturer's written Instructions. Clean fan Interiors to remove foreign material and test results. I . . . Increased If lined duct Is used. . Wiring Diagrams: Power, signal, and control wiring. construction dirt and dust. Vacuum clean fan wheels, cabinets, and coils entering air face. . . I � I Coordination Drawings: Submit with Shop Drawings. Show mechanical-room layout and Remove debris from exterior of units. I I I EAR 0 1 ",I Store Intemally lined ductwork up off of the floor. Protect Internally lined ductwork from water and relationships between components and adjacent structural and mechanical elements. Show After completing system Installation and testing, adjusting, and balancing air-handling unit and LOUVERS AND DAMPERS: . � I I 14 1 dust. "Butter the leading edge of all Internal duct lining with the manufacturer's recommended support locations. type of support. and weight on each support. Indicate and certify field olr�distrlbutlon systems, clean filter housings and Install new, clean filters. Provide louvers, dampers, and fire dampers of size as noted. Fire dampers shall be "high hat" t ; adhesive. I measurements. I ype I I . "B" with damper outside of air stream. Manufacturer equal to Louvers and Dampers, Aerollte, . I � I . I . Inspect and repair all damaged lin I Ing prior to Installation of ductwork. Operation and Maintenance Data: For air-handling units to Include In emergency, operation. and Prefco. I I I I maintenance manuale. TION: I . I � I INSTALLATION OF FLEXIBIE DUCTS I Field Quality-Control Test Reports- From manufacturer. . CONSTANT VOLUME AIR HANDLING UNITS I PIPING: I I I I m Maximum Length; For any duct run using flexible ductwork, do not exceed W - O" extended length, Quality Assurance CV Air Handling Unit (electric heat/CW, Supply Fen only) , . I I . , I . HVAC I I � Installation shall have smooth full radius turns down to diffuser. Source Limitations: Obtain modular afr-handilng units through one source from a single Two�woy, normally closed. modulating control valve for chilled water coils: Copper tubing, 3 Inch and smaller: ASTM B 88. Type L with wrought-copper, solder joint, I Installation not permitted above Inaccessible ceilings. manufacturer. 1. Startup . . streamlined pattern fittings. I I . � SPECIFICATIONS I � Product Options., Drawings Indicate size, profiles, and dimensional requirements of modular The unit shall operate on a 7 day/night schedule. During. startup, the fan shall run with the dampers Steel pipe, 2 Inch and smaller: ASTM A 53, Type S (seamless) or Type F (fumace-butt welded), I I ACCESS PANELS: Indoor air-handling units and are based on the specific system Indicated. Refer to Division 01 In the full recirculation position. Provide occupied changeover sequence with optimum start function. Grade B. Schedule 40, black steal, plain ends with malleable-Iron threaded fittings. . I � Furnish all access panels required for proper servicing of equipment. Provide access panels for all Section "Product Requirements." Men the return air temperature reaches occupied setpoint (adjustable), the minimum outside air Steel pipe, 2-1/2 Inch through 8 Inch: ASTM A 53, Type E (electrlc�reslstonce welded), Grade B, I , I . . concealed valves, ventsi controls and cleanout doors, and sprinkler devices required by NFPA. Provide Electrical Components, Devices, and Accessories., Listed and labeled as defined In NFPA 70, by damper shall open to the controlled minimum outdoor air position. Schedule 40, black steel, plain ends with seamless or welded steal fittings for welded joints. , . � I I r I I I frame as required for finish. Furnish panels to General Contractor. Exact locations to be approved a qualified testing agency, and marked for Intended location and application. 2. Supply Fan Control . I � � I I by the Architect. Minimum size to be 19" x 12". units to be 16 gauge steel, locking device shall be NFPA Compliance- Comply with NFPA 90A for design, fabrication, and Installation of The supply fan shall run continuously at constant speed and set to the required CFMI. Refrigerant piping shall be ASTM 8 280 Typo ACR. hard-drawn temper; wrought-copper, solder-joint I I . screwdriver cam locks. air-handling units and components. 4. Outside Air Damper Control fittings; brazed joints. I I . . . . HANGERS AND SUPPORTS: . ARI 430, "CentrGI-Statlon Air-HandlIng Units," and shall be listed and labeled by ARL damper shall be set to ml I I I � ARI Certification: Alr�handllng units and their components shall be factory tested according to During un-occupled mode. outside air damper shall be shut. During occupied mode, outside Cie . I . Support all piping, ductwork and equipment by hangers or brackets. Furrilth structural steel COORDINATION 5. Cooling Control ninnum outside air position. I Condensate drain piping shall be Type L copper piping with soldered or brazed joints. , . I I I members where required to support piping and equipment. No portion'of piping or valves shall be Coordinate size and location of concrete bases. Cast anchor-bolt Inserts Into bases. Concrete, . n odulated to maintain space temperature setpoint. On a call for cooling the electric PIPING INSTALLATION . . I I . . I . supported by equipment. � reinforcement, and formwork requirements are specified In Division 03. heat shall stage off. On a further call for cooling the chilled water valve shall be modulated open. e I I � . �Coordinate Installation of roof curbs, equipment supports, and roof penetrations. These Items 6. Heating Control Locations and Arrangements: Drawings (plans, schematics, and diagrams) Indicate the general � . . . I I I Ductwork - Support by means of hangers as follows: . are specified In Division 07 Section "Roof Accessories." a ontrolled to maintain Space temperature setpoint. On a call foe heating. the location and arrangement of piping systems. Locations and arrangements of piping take into . I . . I I I . Duct Width Hanger Size and Type Max. Spacing q Coordinate size and location of structural-steel support members. cooling valve shall be closed. On a further call for heating the electric heat shall be staged on. consideration pipe sizing and friction loss, expansion, pump sizing. and other design considerations. I I I � I . � . I . 30 or less (#I 6 gage) 8 1 EXTRA MATERIALS 7. Filter Pressure Drop So for as practical. install piping as Indicated, Locate groups of pipes parallel to each other, spaced � I 31 to 60 (#14 gage) 8 Furnish extra materials that match products installed and that are packaged with protective Provide static pressure differential switch across each filter which will alarm the system on high to permit full insulation and servicing of valves. I I 1 61 to 90 3/80 dia. Rod 8 covering for storage and Identified with labels describing contents. static pressure limits. I . . . � A pair of hangers shall be located at every transverse joint and elsewhere according to the table. Filters: One set for each dir-handling unit. 8. Freeze Stat Control I Install all hydronic piping, except for condensate piping, at a uniform grade of I Inch per 40 feet ! � I I I I I I I I . Fan Belts: One set for each air-handling unit fan. A low temperature cutout thermostat located In the discharge of the heating coil, will put the air upward In the direction of flow. I I � . . Piping! � Gaskets- One set(s) for each access door. handler In fall safe position when the temperature falls below 37 degrees. The low temperature . I Install hangers, supports, clamps and attachments to support piping properly from building structure. PRODUCTS � cutout thermostat shall require manual reset. Install all condensate piping at a uniform grade of 1/8 Inch per 1 foot downward In the direction of . I I Arrange for grouping of parallel runs of horizontal piping supported together on fleld-fabricated, Air Handling I Unit Construction . . . I 9. Smoke Detector I flow to the nearest drain location. . I I I . . I 11 . I I I . I I When the smoke detector is alarmed, the FA shall be alarmed and the air handler shall fall safe With . � I I . ­1_,.,____�.,,M,'.,_­ I _.__� . . -3 ��, �­ . 1-l"M � . . M I . . - ­ . I . I . - . . . . - 1,11,11, 'p-m I I � __ I __ - I I � . � . ww",,*w� . lv--�. ,,TMr*#,�,­.T."XW.M�,­ �_ ­'"-,M,%TX,"","n�, ,%,,"",..q�­R1,-­­j "I I . .