Exhibit_C,_A2_Drawings_and_Specifications.pdf
PDF 1 MB Posted
- Attached to
- DNR - Lodging within Duluth MN Aug 24-27, 2026
- Solicitation number
- 2000018389
- Issued by
- St. Louis County, Minnesota
About this file
This document is a set of architectural and engineering drawings and specifications prepared by the Minnesota State Facilities Management Office and the Department of Military Affairs for a chiller replacement project at the Minnesota National Guard Cambridge Armory located at 505 Spirit River Drive, Cambridge, MN 55008. The project, titled "Always Ready - Chiller Replacement," encompasses mechanical and electrical demolition and installation plans dated April 1, 2026. The scope of work includes removal of the existing chiller with piping to remain and preparation for connection to a new chiller system, modification of piping to accommodate new chiller connections, and complete electrical disconnection and reconnection of the existing system to the new equipment.
The new chiller system (CH-1) is a York model YLAA0120SJ46XF with a capacity of 117.3 tons, designed to operate at 248 gallons per minute flow rate with a minimum flow of 150 gallons per minute. The chiller will utilize R454B refrigerant with four scroll compressors and operate at 460 volts, 3-phase power requiring 300 amps maximum circuit amperage with a 300-amp breaker replacement in the main service board. Additional requirements include connection of the new chiller to the existing Johnson Controls Metasys system via BACnet MS/TP integration, running #500 MCM and #3 ground conductor to the new equipment, and proper electrical preparation during both demolition and installation phases. The project documents were prepared under the professional supervision of licensed engineer Jeremy J. Tautges for the mechanical systems and Kevin W. McLean for the electrical systems.
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REMOVE CHILLER, PIPING TO REMAIN, PREP AS
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Exhibit C, A2 Drawings and Specifications
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CHILLER CONNECTIONS SHALL BE ON THIS SIDE
AS SHOWN. MODIFY PIPING TO ACCOMMODATE
CONNECTION TO NEW CHILLER
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MECHANICAL NOTES:
1. CONNECT NEW CHILLER TO EXISTING JOHNSON CONTROLS METASYS SYSTEM. THIS
SHALL INCLUDE THE EXISTING HARDWIRED POINTS AND NEW BACNET INTEGRATION VIA
BACNET MS/TP
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CHILLER SCHEDULE
GENERAL MECHANICAL ELECTRICAL
EQUIP
TAG LOCATION
CAPACITY
(TONS)
DESIGN
FLOW MIN FLOW
DESIGN FLOW
PRESSURE
DROP
AMBIENT
TEMP (F)
FLUID REFRIGERANT
TYPE
COMPRESSOR
TYPE
# OF
COMPRESSORS MANUFACTURER MODEL NO. NOTES VOLTAGE/
PHASE MCA MOP
EWT LWT GLYCOL %
CH-1 OUTSIDE 117.3 248 150 16.3 95 56 44 30% R454B SCROLL 4 YORK YLAA0120SJ46XF 460 / 3 300
DIVISION 22, 23 NOTES
1.
DIVISION 26 NOTES
1.
ELECTRICAL DEMOLITION PLAN
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ELECTRICAL KEYNOTES :
1. ELECTRICAL CONTRACTOR TO DISCONNECT EXISTING CHILLER AND
PERPARE FOR INSTALLATION OF NEW CHILLER (CH-1).
ELECTRICAL PLAN
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ELECTRICAL KEYNOTES :
1. ELECTRICAL CONTRACTOR TO CONNECT NEW CHILLER (CH-1). 1 RUN OF
#500 MCM AND #3 GND TO NEW CHILLER. ELECTRICAL CONTRACTOR TO
REPLACE EXISTING 400A, 400V-3 PHASE BREAKERS WITH 300A,
400V-3PHASE BREAKER IN MSB.
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