SUPPLEMENTARY	9 Nov 1998	15731sup

UPDATES -

Do not use packaged rooftop 'Heating-Cooling' or 'Heating Only' units in areas that receive snowfall or are subject to bad icing conditions. Use rooftop equipment only when requested by Area Office prior to beginning design work.

SECTION 15731

PACKAGED AIR CONDITIONERS

PART 1 GENERAL

1.1	SUMMARY

A.	Includes But Not Limited To

1.	Furnish and install packaged air conditioning units as described in Contract Documents.

B.	Related Sections

1.	Section 15051 - General Mechanical Requirements	15051

1.2	SYSTEM DESCRIPTION

A.	Performance Requirements

1.	SEER rating as defined by ARI shall be not less than 10.0 for units 5 tons and smaller.

2.	EER rating as defined by ARI shall be not less than 9.5 for units larger than 5 tons.

1.3	QUALITY ASSURANCE

A.	Regulatory Requirements

1.	Air-Cooled Condensing Unit Section shall be UL approved and rated according to ARI Standards.

2.	Air delivery of units certified in accordance with standard test code for centrifugal fans adopted by AMCA.

1.4	DELIVERY, STORAGE, AND HANDLING	Deliver

A.	Ship units with lifting angles and fully charged with refrigerant R-22.

1.5	WARRANTY	Warranty

A.	5 year warranty on compressors.

PART 2 PRODUCTS

2.1	MANUFACTURED UNITS

A.	Air Conditioning Units

1.	Units shall be completely factory assembled and tested. Units shall include following components and features -

a.	Condenser coils

b.	Condenser fans and motors

c.	Interconnected wiring

d.	Prewired control panel

e.	Filter section

f.	Corrosion resistant all-weather cabinet

2.	Fan Section -

a.	Centrifugal Fan - One or more.

1)	Double inlet.

2)	Double width forward curved Class I.

3)	Constructed and tested in accordance with AMCA requirements.

b.	Furnish with flexible connections with weather protection on supply and return air take-offs.

3.	Controls - Low ambient and dual pressure. Pre-wired.

4.	Cabinets - Galvanized, weather-proof, and coated inside and outside with corrosion-resistant paint.

5.	Acceptable Manufacturers And Models -	Approved Products

a.	Carrier 50HJQ

b.	Equal as approved by Architect before bidding by Lennox. See Section 01600.

2.2	ACCESSORIES

A.	Vibration Isolators - Spring type

PART 3 EXECUTION

3.1	INSTALLATION	Installation

A.	Install units on vibration isolators.

3.2	FIELD QUALITY CONTROL

A.	Manufacturer's Field Service - Equipment Manufacturer to provide start-up service.

END OF SECTION