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VersaTemp™ Water-to-Water Heat Pumps
Multistack Water-to-Water Heat Pump with Heat Recovery
Models ARA 020X, 030X, 060X
PART 1 GENERAL
1.01 SUMMARY
A. Section Includes:
1. Design
2. Performance Criteria
3. Refrigerants
4. Controls
5. Installation Requirements
1.02 REFERENCES
A. ARI 550/590-2003
B. ANSI/ASHRAE 15
C. ASME Section VIII
D. NEC
E. UL
F. CSA
G. OSHA as adopted by each individual State
1.03 SUBMITTALS
A. Chiller dimensional drawings with elevation overview. Drawings to include required service clearances, location of all field installed piping and
electrical connections.
B. A summary of all auxiliary utility requirements for normal system operation required. Auxiliary utility requirements include: electrical, water, and air.
Summary of auxiliary equipment shall include quantity and quality of each specific auxiliary utility required.
C. Chiller control documentation to include: chiller control hardware layout, wiring diagrams depicting factory installed wiring, field installed wiring with
points of connection, and connection points for BAS control/interface points.
D. Sequence of operation depicting overview of control logic used.
E. Installation and Operating Manuals.
F. Manufacturer-certified performance data at full load in addition to either IPLV or NPLV.
1.04 QUALITY ASSURANCE
A. Regulatory Requirements: Comply with the codes and standards as defined in Section 1.02 titled REFERENCES
B. Chiller is required to be run tested at manufacturer’s facility prior to shipment. Report available upon request.
1.05 DELIVERY and HANDLING
A. Chiller modules shall be delivered to the job site completely assembled and charged with refrigerant.
B. Installing contractor to comply with manufacturer’s instructions for transporting, rigging, and assembly of modular
chiller.
1.06 WARRANTY
A. Manufacturer’s equipment warranty shall be for a period of one (1) year from date of equipment start up or 18
months from the date of shipment, whichever occurs first.
B. Extended warranty on parts and labor available by request. The warranty shall include parts and labor costs for the
repair and or replacement of defects in components or workmanship.
1.07 MAINTENANCE
A. Chiller maintenance shall be the sole responsibility of the owner.
PART 2 PRODUCTS
2.01 Operating Conditions
A. Provide outdoor packaged air-cooled liquid heat pump heat recovery chiller with hot water and chilled water capacities as scheduled on drawings at
job site elevation listed in Section 15050.
B. Chiller shall be designed to operate using R-410A Refrigerant.
C. Chiller shall be designed for parallel water flow through both the chilled water and hot water piping supplies to each module.
D. Liquid to be chilled will be water containing corrosion inhibitors and antifreeze solution as needed.
E. Chiller shall be designed to operate using _____volt, 3 phase, 60 (50) Hz electrical power.
2.02 Outdoor Packaged Water-to-Water Heat Pump Heat Recovery Chiller
A. Approved manufacturer is AIRSTACK.
B. System Description: Chiller shall incorporate scroll type compressors and can consist of multiple (20, 30, 60) – ton modules. The refrigerant circuit
shall consist of a tandem compressor set, evaporator, refrigerant-to-hot water heat exchanger, air-to-refrigerant heat exchanger, electronic expan-
sion valves, liquid line solenoid valves, filter driers, four-way reversing valve, and control system. (A multi-module chiller must be able to produce
chilled water and hot water even in the event of a failure of one or more modules.) Refrigerant circuit shall not contain more than (100, 125, 220) lb.
of R-410a refrigerant.
Guide Specifications
Continued on next page.
