3305 NASSAU ST WA CENTER FOR PAIN MANAGEMENT 2018-12-21

WCPM Splits February 07,2017 Mechanical Specifications -BCXD Blower Coil -Direct Drive Item: B1, B2 Qty: 2 Tag(s):AHU-1,AHU-2 BCHD General The product line consists of a horizontal air handling unit and optional mixing box.Air-handling airflow data is certified in accordance with AHRI standard 430. The unit is UL listed to U. S. and Canadian safety standards and complies with NFPA 90A. Air handlers consist of a hydronic and/or DX coil, drain pan, and centrifugal fan with motor in a common cabinet. Motor location and coil connections are independent for the same or opposite side location.Air handlers are provided with knockouts in all four corners for installing the unit suspended from the ceiling with threaded rods. Unit and accessories are insulated with 1" 1.5 lb/cu.ft density fiberglass insulation. 1"foil faced insulation is also available. Large motor access panels are provided on both sides of the unit and accessories. Casing Casings (structural components) are constructed of 18-gauge galvanized steel, insulated with 1" 1.5 lb/cu. ft density fiberglass fire resistant and odorless glass fiber material to provide thermal and acoustical insulation. Fan housing sides are directly attached to the air handler top and bottom panels strengthening the entire unit assembly. Coil access panels are located on both sides of the air handler and allow easy removal of the internal coils and drain pan. Main access panels provide generous access to the fan and motor from both sides of the air handler. Foil Faced Insulation The interior surface of the unit is acoustically and thermally lined with 1"2.0 lb/cu. ftR-Value of 4.3 density glass fiber with a foil facing. The insulation is UL listed and meets NFPA-90A, UL 181 and bacteriological C665 standards. Coil#1 Direct Expansion (DX)Coils DX coils for use with refrigerant 22 or 410a, have 3/8"OD x.016"W round seamless copper tubes expanded into full fin collars for permanent fin-tube bond and use highly efficient Trane Delta Flo, Type H aluminum fins mechanically bonded. 3, 4 and 6 row coils are available with 12 fins per inch fin spacing. Coils have round, seamless, copper pipe liquid lines and suction headers with male sweat connections.Suction headers have bottom connections to aid drainage of any oil that may collect in the coil. Liquid line and suction connections are outside the unit casing(on the same side of the unit)to facilitate field piping. . Coils are dehydrated and sealed with a dry air charge. Connections are clearly labeled to ensure coils are piped correctly. Coils are proof tested at 715.00 psi and leak tested at 650.00 psi air-under-water. Max std operating conditions are 650.00 psi at 127.0 F with R-22 and R410a. Coil performance data is in accordance with the current edition of AHRI Standard 410. Electric Heater Stages Factory provided and mounted, UL recognized resistance open-wire heater with a disc-type automatic thermal primary safety device.One stage of control. Single point power connection to the unit is provided. Optional line fuses and a door interlocking disconnect switch are available. Magnetic Contactors A 24 volt electric heater contact for use with Thermostat Control Interface. Reset Backup Protection Secondary Manual Reset Backup Protection is provided. Disconnect Switch A factory provided disconnect switch with an interlocking door on the heater control panel. Line Fuse A safety fuse located in the electric heater's line of power to prevent power surge damage to the electric heater. Unit Fan The fans are DWDI (double width double inlet)forward curved centrifugal blower type. The fans are direct drive mounted directly to the motor shaft. All fans are dynamically balanced. All air handlers have a single fan. Electronically Commutated Motors(ECM) All motors are brushless DC (BLDC) electronically commutated motors (ECM)factory programmed and run tested in assembled units. The motor controller is mounted in a control box with a built in integrated user interface and LED tachometer. If adjustments are needed, motor parameters can be adjusted through momentary contact switches accessible without factory service personnel on the motor control board. Motors will soft ramp between speeds to lessen the acoustics due to sudden speed changes. Motors can be operated at three speeds or at variable speed with factory supplied or field supplied controllers. The motor will choose the highest speed if there are simultaneous or conflicting speed requests.All motors have integral overload protection with a maximum ambient operating temperature of 104.0 F FLD=Furnished by Trane U.S.Inc.dba Trane/ Equipment Submittal fage.9-eF26f Installed by Others