AC - 20 ton condensing unit, coil, mechanical, etc. - Crestwood School District ITB-BA-HS AC Unit

Crestwood School District » ITB-BA-HS AC Unit

The information below is a summary of solicitation number ITB-BA-HS AC Unit posted by Crestwood School District.  As a reminder, this solicitation is closed and responses are no longer being accepted.

AC - 20 ton condensing unit, coil, mechanical, etc.

Date Issued: 03/12/2013

Deadline: 03/28/2013  prior to 3:30 PM   E.D.T.

Requisition Number:

Delivery Point: 1501 N. Beech Daly Rd. Dearborn Heights, MI 48127

Delivery Date: Mid June 2013

Type of Purchase: Term: Unspecified

Construction Related: No

Type of Response Allowed: Hard Copy Only

Issuing Agency: Crestwood School District

Using Department: Business Operations

Special Notices: All or None Award
Brand Name or Approved Equal
Contractors License Required
F.O.B Delivered/Installed
F.O.B Destination
Installation Required
Insurance Required
Onsite Maintenance Required
Job-Walk Visit Recommended on 03/18/2013 03:30 PM at Crestwood High School, 1501 N. Beech Daly Rd., Dearborn Hights, MI 48127


Due Date: 3/26/2013 3:00:00 PM E.D.T.

Primary Contact Name: Mr. Brian Aprill

Title: Director of Business Operations



Crestwood High School Library Air Conditioning Replacement Scope March 11, 2013 Executive Summary: Currently air conditioning for the library is provided by a constant volume Trane Climate Changer air handling unit packaged with a Trane 25 ton, single circuit, R22 condensing unit with a reciprocating compressor feeding the direct expansion evaporative cooling coil installed in fan discharge of the Climate Changer unit. The condensing unit was manufactured in 1965 making it 47 years old, well beyond the expected life of 20 years for an air cooled condenser. Due to the age of this unit and the phase out of R22 refrigerant the unit needs to be replaced with a more efficient condensing unit utilizing R410A refrigerant. Introduction of the new refrigerant will necessitate replacement of the refrigerant lines as well as the evaporative coil. In addition to consideration of the units’ age, the capacity is excessive in relation to the area served. Right sizing of the unit will eliminate short cycling conditions and provide for a more efficient system over all. General: This project will be executed as turnkey; as such the proposed price shall include all associated costs for material, equipment, labor, fees, overhead and profit necessary for a complete and operational system. There will be no change orders issued for the execution of the work scope detailed below. It is the owners’ expectation that upon completion there will be a complete and operational system, accomplished for the proposed price. The successful respondent is to include all applications and paperwork required for the owner to receive utility rebates for upgrading and downsizing of the equipment. Demolition: 1) Lock out, tag out power source 2) Reclaim and dispose of R22 refrigerant in accordance with EPA regulations, provide manifest for owners record 3) Disconnect, remove and dispose of the existing condensing unit; refrigerant piping and accessories; evaporative cooling coil as well as any electrical service gear not necessary for the installation of the new equipment. 4) Provide as necessary rigging and cartage for the execution of this work Equipment: 1) Provide and install a new, 460/3/60, nominal 20 ton, dual circuit condensing unit utilizing R-410A refrigerant, equipped with HACR Circuit Breaker / Disconnect and coil guard. Please provide equipment submittal with your proposal detailing rated capacity size and efficiency. 2) Provide a matched dual circuit, full face laced evaporative cooling coil Mechanical: 1) Provide all necessary cartage and rigging to set the condensing unit in the court yard, assume this work will be completed when school is not in session 2) Install new evaporative cooling coil making all necessary duct and condensate drain pan modifications, including replacement if necessary, to accept the new larger coil; provide new duct insulation as necessary 3) Re-sheave the unit as necessary to achieve the required air flow 4) Design in accordance with manufactures requirements, lay-out and install new dual circuit refrigerant piping system with all necessary pipe, valves and fittings; hangers and supports; refrigerant specialties and insulation 5) Pressure test, leak check and evacuate the system 6) Charge with R-410A refrigerant as necessary 7) Check, test and start in accordance with manufactures recommendations 8) Provide written start up report including operating conditions Electrical: 1) Provide all necessary conduit, wire, junction boxes, hangers and supports in rigid, weather tight conduit where necessary 2) Install unit disconnect and make final terminations Controls: 1) Make all terminations to incorporate the new condensing unit into the existing control scheme Start-up & Commissioning: 1) Verify all power and control points are properly terminated and labeled 2) Verify all refrigerant piping connections 3) Start up and log operating conditions 4) Trim refrigerant charge as necessary 5) Provide written documentation to the owner detailing operating conditions and final refrigerant charge Close-out & Warranty: 1) Provide equipment manufactures warranty information showing one (1) year parts coverage and five (5) year compressor coverage 2) Provide written confirmation of one (1) year labor coverage 3) Provide all manufactures O&M material and owner training 4) Submit invoice for final payment 

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