Specifications - City of Montpelier, Vermont

Montpelier District HeatingCity of Montpelier, VTIssue Date:September 28, 2012Title:15781 – Packaged Heating UnitsPage #:4 of 6PART 2– PRODUCTS2.1 INDOOR PACKAGED UNITSA. General: Provide factoryassembled and tested packaged units as indicated,consisting of casing, compressor, evaporator, fans, filters, and unit controls.Provide capacities and electrical characteristics as scheduled.B. Casing: Provide standard casing construction, corrosion protection coating, andexterior finish. Provide removable panels and/or access doors for inspection andaccess to internal parts. Insulate casing with 1/2" thick minimum thermalinsulation, and compressor compartment with acoustical insulation. Provideknockouts for electrical and piping connections.C. Fans: Provide doubleinlet, forward curved, centrifugal fans with adjustable beltdrive. Provide permanently lubricated fan and motor bearings, and thermaloverloads in motor.D. Filters: Provide 4" thick throwaway MERV 14 filters.E. Heating Coil: Provide hot water heating coil, constructed of copper tubes andaluminum fins, designed to fit within casing with no duct modificationsnecessary.F. Available Manufacturers: Subject to compliance with requirements,manufacturers offering indoor packaged units which may be incorporated in thework include, but are not limited to, the following:G. Manufacturers: Subject to compliance with requirements, provide indoorpackaged units of one of the following:1. BorgWarner Air Conditioning, Inc.2. Carrier Air Conditioning; Div. of Carrier Corp.3. McQuay Air Conditioning; Snyder General Corp.4. TraneH. Filters: Provide filter box with integral filter rack and hinged access door on bothsides.I. Mixing Box: Provide mixing box designed to merge and mix 2 air streams.Provide damper blades with rods rotating in noncorrosive bearings, and lowleakage construction (less than 3% leakage at 3" differential pressure).PACKAGED HEATING UNITS 15781 4