Guide specifications
Variable Speed Screw Chiller
HVAC Guide Specifications
Size Range: 300 to 550 Tons (1055 to 1934 kW) Nominal
Carrier Model Number: 23XRV
Part 1 — General
1.01SYSTEM DESCRIPTION
A.
B.If a manufacturer proposes a liquid chiller using
1.A vapor activated alarm system consisting of all alarms, sensors, safeties, and ventilation equip- ment as required by ANSI/ASHRAE Standard 15 Safety Code for Mechanical Refrigeration (latest edition) with the quotation. System shall be capable of responding to
2.A
3.Zero emission purge unit capable of operating even when the chiller is not operating.
4.
5.
6.Plant room ventilation.
7.Removal and disposal of refrigerant at the end of the phase out period.
8.Chillers utilizing a purge unit shall include in the machine price the costs to perform the follow- ing regular maintenance procedures:
a.Weekly: Check refrigerant charge.
b.Quarterly: Charge purge unit dehydrator at least quarterly, more often if necessary. Clean foul gas strainer. Perform chemical analysis of oil.
c.Annually: Clean and inspect all valves. Drain and flush purge shell. Clean orifices.
1.02QUALITY ASSURANCE
A.Chiller performance shall be rated in accordance with AHRI Standard 550/590, latest edition.
B.Equipment and installation shall be in compliance with ANSI/ASHRAE 15 (latest edition).
C.Cooler and condenser refrigerant side shall include ASME “U” stamp and nameplate certifying compli- ance with ASME Section VIII, Division 1 code for unfired pressure vessels.
D.A manufacturer’s data report is required to verify pressure vessel construction adherence to ASME vessel construction requirements. Form
E.Chiller shall be designed and constructed to meet UL and UL of Canada requirements and have labels appropriately affixed.
F.Unit shall be manufactured in a facility registered to ISO 9001:2000 Manufacturing Quality Standard.
G.Each compressor assembly shall undergo a mechan- ical
H.Entire chiller assembly shall be proof tested at 204 psig (1407 kPa) and leak tested at 185 psig (1276 kPa) with a tracer gas mixture on the refriger- ant side. The leak test shall not allow any leaks greater than 0.5 oz per year of refrigerant. The water side of each heat exchanger shall be hydro- statically tested at 1.3 times rated working pressure.
I.Prior to shipment, the chiller automated controls test shall be executed to check for proper wiring and ensure correct controls operation.
J.Chillers shall have
1.03DELIVERY, STORAGE AND HANDLING
A.Unit shall be stored and handled in accordance with manufacturer’s instructions.
B.Unit shall be shipped with all refrigerant piping and control wiring
C.Unit shall be shipped charged with oil and full charge of refrigerant
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