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REMOVE THIS OUTLINE GUIDE BEFORE PLACING
THE SPECIFICATION SECTION IN THE CONTRACT

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O U T L I N E   G U I D E

DIVISION 15:  MECHANICAL

SECTION 15783 ‑ PACKAGED TERMINAL AIR CONDITIONER

USE:	Furnishing and installing terminal air conditioner systems.  Unique job requirements may require specific coverage in the following specification sections:

NOTES TO SPECIFIER:

A.	Options within paragraphs are identified by enclosure in brackets; blank spaces enclosed by brackets [      ] provide for information to be inserted, as appropriate to individual projects.

B.	TO AVOID CONFLICTING REQUIREMENTS AND COSTLY MISTAKES, the specifier must edit (delete, substitute or add to the text).  The remaining paragraphs must be renumbered.

C.	DELETE FOR FINAL COPY: Notes to the Specifier, located between lines of asterisks; all [brackets], underlining, boldface, and italics within the paragraphs; and this page.  (Open Reveal Codes [alt F3] to do this accurately).

D.	To Edit “(Footer B)”: (Corel 8).  ENTIRE FOOTER SHOULD BE BOLDED.  Click in the footer and delete the “Project Name (ftr B)” text and replace it with the Name Of The Project (upper/lower case).  Replace date with current MM/YY (WITHOUT BRACKETS). 

E.	The Guide Specifications are intended to be continuously reviewed and revised.  User’s technical comments are appreciated.  Also, other related or similar specifications that are written “from scratch” that could benefit others, or other questions can be sent to NSTC A/E Group, ST-110 or call (303) 987-6851.

F.	DESIGN NOTES:

1.	DRAWING DATA REQUIRED:

REVISIONS OF THIS SECTION:
CSI format, editorial changes 11/00
Metric: Not Applicable
Technical Update: 

SECTION 15783

PACKAGED TERMINAL AIR CONDITIONER

PART 1:  GENERAL

1.1	SUMMARY

A.	Section Includes:  [Furnishing] [and] [Installing] packaged terminal air conditioners.

B.	Related Sections:

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LIST ITEMS OF WORK THAT MIGHT LOGICALLY BE FURNISHED AND INSTALLED UNDER THIS SECTION, BUT INSTEAD ARE SPECIFIED IN ANOTHER SECTION.  THIS ARTICLE IS RARELY REQUIRED.
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1.2	SYSTEM DESCRIPTION

A.	Requirements:  A factory assembled, air-cooled packaged, terminal air conditioning unit.  Unit dimensions shall not exceed [    ] inches wide, [    ] inches high, and not more than [    ] inches deep from face of exterior grill to face of room cabinet.  [Factory installed electric heat shall be furnished as part of the assembled unit.]  Each air conditioner shall be complete and ready to operate after installation.  A fresh air damper shall be located inside the chassis with easily accessible manual controls.  A UL 484 listed system and ARI 310 certified unit are required.  Units shall be equipped with a front discharge room cabinet for mounting [high on wall] [floor] [__________].

1.3	SUBMITTALS

A.	General:  Submittals shall be according to Section 01330 ‑ Submittal Procedures.

B.	Manufacturer's Literature:  Submit [    ] copies of the manufacturer's descriptive data for the packaged terminal air conditioning unit[s] to be used on this project.

C.	Installation Instructions:  Submit [    ] copies of the manufacturer's installation instructions for the packaged terminal air conditioning unit[s] to be used on this project.

D.	Operating and Maintenance Instructions:  Submit [    ] copies of the manufacturer's operating and maintenance instructions for the packaged terminal air conditioning unit[s] to be used on this project.

E.	Shop Drawings:  Submit [    ] copies of shop drawings for the major assemblies and major components of the packaged terminal air conditioning unit[s] to be used on this project.  Shop drawings shall show wiring and controls.  A bill of materials and parts list shall be furnished with the shop drawings.  Drawings shall be [same] [larger] scale as the full size Contract Drawings.

F.	Performance Data:  Submit [ ] copies of [curves] [calibration charts]  [           ] showing the performance characteristics of [            ] [the following items] to be used on this project:

PART 2:  PRODUCTS

2.1	EQUIPMENT

A.	Type:  A hermetically sealed refrigerant system consisting of compressor, condenser, and evaporator coils and capillary refrigerant coils shall be provided, mounted on a common chassis.  A wall case shall also be provided.

B.	Controls:  Each unit shall be remotely controlled with a wall-mounted thermostat.  Each unit shall be factory equipped with a freeze sentinel control to energize the heater and fan on high speed when the room temperature reaches 45‑55 degrees F.  The units shall automatically provide cooling and heating as required to maintain the temperature to the level set on the wall‑mounted thermostat.  The controls shall incorporate automatic changeover from heating to cooling in response to the wall‑mounted thermostat.  [Provide units with low ambient lockout control to prevent compressor operation below 35 degrees F].

C.	Cabinet and Chassis:  The cabinet and chassis shall be constructed of 16 gauge minimum furniture steel and designed for easy installation and service access.  Cabinet shall be suitable for [wall mounting through set‑screw mounting holes] [floor mounting].  Grilles shall be heavy‑duty steel with baked enamel.

D.	Refrigeration System:  The refrigerant system shall be split between indoor and outdoor sections.  Both systems shall be factory piped, and sealed with an operating charge.  Contractor shall hard pipe refrigerant lines between indoor and outdoor modules.  [System shall be capable of operating down to ‑30 degrees F].

E.	Indoor Module:  The indoor module shall consist only of copper‑tube, aluminum‑fin evaporator coil, and thermal expansion valve, pre‑charged with refrigerant and sealed.  Systems with compressors located in the indoor module or using capillary‑tube metering devices shall be unacceptable.  Maximum face velocity of the evaporator coil shall not exceed 325 fpm at maximum fan speed.

F.	Outdoor Module:  The outdoor module shall contain the compressor, condenser coil and condenser fan and be fully suitable for outdoor mounting.  The compressor shall be fully hermetic with overloads, high and low pressure switches, spring isolation, crankcase heater, filter drier, refrigerant line sight glass and moisture indicator.  The condenser coil shall be constructed of aluminum with copper tubes and aluminum fins with a direct‑drive propeller‑type fan.  Components shall be factory assembled, charged with refrigerant, and sealed.

G.	Air Distribution System:  The air distribution system shall be constructed with a quiet, direct‑drive fan assembly equipped with multiple, double‑inlet blowers, self‑aligning sleeve bearings, and lifetime lubrication.  Fan motor shall be permanent‑split, high efficiency type, equipped with [1-speed] [2-speed] [3-speed]  for air flow modulation.  Dehumidification shall utilize the lower fan speed.  Air delivery shall be minimum [760] cfm at high fan speed.

H.	Air Filters:  The air filters shall be 1 inch cleanable foam type.  They shall be easily removable from the front of the system by means of quarter‑turn fasteners and shall not require system shutdown for service.

I.	Electric Reheat:  The electric reheat shall be low‑watt density with tubular construction and provided with non‑corrosive metal sheath.  The capacity of the reheat shall be capable of maintaining dry‑bulb conditions during dehumidification but shall only be energized if dry‑bulb temperature drops below thermostat set point.  Reheat capacity shall be [2.7 KW.] Manual‑reset, dual‑limit switches shall be provided to provide for shutdown in event of over‑temperature conditions.  Capillary‑tube sensors are unacceptable.

J.	Control System:  The integral control system shall be factory assembled, wired into the system and tested prior to shipment.  It shall consist of an On/Off switch, temperature thermostat, High/Low speed selector switch and indicator lights for fan speed, and operational mode.  Controls shall be easily accessible from the front of the system and protected by an impact resistant cover.

K.	Condensate Pump:  Provide condensate pump for positive removal of moisture collected from the evaporator coil drain pan and humidification system overfill.  Pump shall be factory piped, mounted and wired with integral float switch and respond automatically.

L.	System Performance:  Each unit shall be capable of providing [   ] Btuh cooling and [   ] Btuh heating.  Units shall operate on [208 volt, 60 Hz, single phase] power.

PART 3:  EXECUTION

3.1	INSTALLATION

A.	Wall Mounting:  Install units according to the manufacturer's instructions.  Mount units high on wall as shown on drawings.  Locate thermostat[s] as shown on drawings.  Units shall be mounted so that face of exterior grill is flush with the exterior wall the units [is] [are] mounted on.

B.	Wiring:  Shall comply with NFPA 70.

C.	Condensate Removal:  Condensate pump shall be connected to piping that will allow collected moisture to be removed through the [existing vent piping] 	[____] [as shown on the drawing.

D.	Refrigerant Piping:  As shown on the drawing.

3.2	DEMONSTRATION

A.	Requirements:  Upon completion of installation and after circuitry has been energized, the Contractor shall demonstrate capability and compliance of system with requirements.  Malfunctioning units shall be corrected and retested by the Contractor to demonstrate compliance with the specifications.

3.3	TRAINING OF GOVERNMENT EMPLOYEES

A.	Requirements:  See Section 01780 - Closeout Submittals.

PART 4:  MEASUREMENT AND PAYMENT

4.1	METHOD OF MEASUREMENT

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WHEN A “LUMP SUM” CONTRACT IS USED, DELETE THE TITLE PART 4:  MEASUREMENT AND PAYMENT, AND BOTH ARTICLES FROM THIS SECTION.  MEASUREMENT AND PAYMENT WILL BE ADDRESSED IN PART 4 OF SECTION 01009 - GENERAL INFORMATION AND REQUIREMENTS OR SECTION 01010- SUMMARY OF WORK.  WHEN NOT A “LUMP SUM” CONTRACT, SELECT APPLICABLE PHRASES; USE THE “NO MEASUREMENT” PHRASE WHEN NONE OF THE PAY ITEMS IN THS SECTION ARE INCLUDED IN THE BID SCHEDULE.
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A.	Units: The work described in this section will [not be measured for payment]. [be measured for and paid for] [on a lump-sum basis].

4.2	BASIS OF PAYMENT

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WHEN NOT A “LUMP SUM” CONTRACT, SELECT APPLICABLE, SELECT APPLICABLE PHRASES; USE THE “NO DIRECT PAYMENT” PHRASE WHEN NONE OF THE PAY ITEMS IN THE SPECIFICATION ARE INCLUDED IN THE BID SCHEDULE.

WHEN NOT A “LUMP SUM” CONTRACT AND PAYMENT IS TO BE MADE UNDER THIS SECTION, SELECT APPLICABLE PAY ITEMS.  DO NOT CHANGE PAY ITEM NUMBER.  WHEN MORE THAN ONE DIAMETER OR GAUGE IS SPECIFIED FOR ANY PAY ITEM, LETTER SUFFIXES WILL BE ADDED AFTER THE PARENTHESIS OF THE ITEM NUMBER.  WHEN GOVERNMENT-FURNISHED PROPERTY IS SPECIFIED FOR PAY ITEMS, THE LETTER SUFFIX GF WILL BE ADDED AFTER THE PARENTHESIS OF THE ITEM NUMBER.
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A.	Payment: [No direct payment for the work described under this section will be made.  Consideration for this item shall be included in the bid price for other items of the Contract]. [Prices and payment will be full compensation for the work described in this section.  Payment will be made under:]

Pay Item	Pay Unit

END OF SECTION