12-12- Addendum 1- FAC133003.pdf
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- Attached to
- SLCo FAC133003 ECC Server Room HVAC - CONST
- Solicitation number
- SLCo FAC133003 ECC Server Room HVAC - CONST
- Issued by
- Utah
About this file
This is Addendum #1 to electrical construction documents for Salt Lake County's Emergency Coordination Center (ECC) Server Room HVAC upgrade project, prepared by HNH Associates PLLC, an electrical engineering and lighting design firm. The addendum, dated August 26, 2026, provides detailed electrical specifications and power coordination requirements for the replacement and addition of cooling and conditioning units within the facility's data room located at 3380 South 900 West, South Salt Lake, Utah. The project involves electrical work associated with multiple bid alternates: Alternate #1 addresses removal and replacement of existing CRU-3.1 (indoor unit in the electrical/UPS room) and its associated outdoor condensing unit, ductwork, piping, and utilities; Alternate #2 covers the addition of CRU-2.2 and associated outdoor condensing unit, piping, and utilities; and Alternate #3 addresses the addition of CRU-1.4 and associated outdoor condensing unit, piping, and utilities. The addendum includes a main floor power plan (EP-101) at 1/8" scale and references related architectural and mechanical construction documents.
The addendum emphasizes critical operational requirements for the data room, mandating that all servers remain operational throughout construction with no power disconnections to any equipment. Contractors must coordinate equipment replacement procedures with the general contractor, mechanical contractor, and owner in advance, providing a method of procedure (MOP) for approval prior to any disconnections. Work may require after-hours scheduling to minimize operational disruption. Electrical work includes installing new conduit and conductors from existing disconnect switches to new equipment, utilizing existing circuit breakers in panel DPMB (located in Mechanical Room 015), furnishing new fused disconnect switches with proper labeling and attached floor plans highlighting the panel location, and replacing existing outdoor units that operate at 480 volts with new units operating at 208 volts with corresponding new circuit breaker installations. Additional work includes furnishing and installing a 120-volt, 20-amp circuit breaker in existing panel OLA to feed the H-1 unit pump and relocating an existing weatherproof outlet with associated circuitry to an approximate location shown on plans.
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Text version
ACC-2.2
ACC-1.3
ACC-1.1
ACC-1.2
ACC-2.1
ACC-1.4
DATA
ROOM
STORAGE/
SLEEPING
OFFICE/
SLEEPING
EMERGENCY
MAN. TRAINING
LINEN
STAIR
ST1-1
STAIR
VESTIBULE
CORRIDOR
CLASSROOM
ELECTRICAL
ROOM
STORAGE
ROOM
CORRIDOR
JANITOR
WOMEN'S TOILET
SHOWER
EQUIPMENT
REPAIR ROOM
MEN'S TOILET
SHOWER
MECHANICAL
ROOM
STORAGE
SECURE
017B
STORAGE
HALL
MACHINE
ROOM
001B
CORRIDOR
STORAGE
GENERATOR
015A
ROOM
OBSERVATORY
10D2
ROOM
EMT TRAINING
10D
ROOM
GYM
Pryco gal generator and pad
CRU-1.1
CRU-1.2
CRU-1.3
CRU-1.4
CRU-2.1 CRU-2.2
CRU-3.1
ACC-1.1
ACC-1.2 ACC-1.3
ACC-1.4
ACC-2.2ACC-2.1
ACC-3.1
H-1
DPMB-1 DPMB-2
DPMB-3
DPMB-4
DPMB-5
OLA -28
OUPSE -29
1LB-1,3,5
1LB-2,4,6
EP-101
MAIN FLOOR PLAN
- POWER
NORTH 0'
MAIN FLOOR PLAN - POWER
1/8" = 1'
8'4'2'
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#1038
SHEET NOTES: POWER
1. MECHANICAL EQUIPMENT WILL NEED TO BE REPLACED ONE AT A TIME TO
MAINTAIN THE DESIRED AIR TEMPERATURE IN THE DATA ROOM.
COORDINATE WITH THE GC, MECHANICAL CONTRACTOR, AND THE OWNER
IN ADVANCE PRIOR TO DISCONNECTING POWER TO ANY OF THE EQUIPMENT.
CONTRACTOR IS TO PROVIDE A MOP (METHOD OF PROCEDURE) TO THE
OWNER FOR APPROVAL PRIOR TO DISCONNECTING ANY OF THE EQUIPMENT.
2. THE EQUIPMENT IN THE DATA ROOM NEED TO REMAIN OPERATIONAL. IT IS
CRITICAL TO ENSURE ALL SERVERS ARE OPERATIONAL DURING THE
CONSTRUCTION. DO NOT DISCONNECT POWER TO ANY EQUIPMENT.
3. THE CEILING IN THE DATA ROOM IS VERY CONGESTED. REFER TO THE
PICTURES ON SHEET E-001.
REFERENCE NOTES: POWER
DISCONNECT THE POWER FOR EACH OF THE CRU (INDOOR) UNITS BEING
REPLACED. RE-CONNECT THE POWER AFTER THE EQUIPMENT IS
REPLACED. COORDINATE THIS WORK WITH THE GC AND THE
MECHANICAL CONTRACTOR. THIS WORK MAY HAVE TO BE DONE AFTER
HOURS. UTILIZE THE EXISTING DISCONNECT SWITCHES AND REPLACE
THE EXISTING FUSES WITH NEW FUSES. COORDINATE WITH THE
MANUFACTURER FOR THE FUSE SIZES RECOMMENDED. RUN NEW
CONDUIT AND CONDUCTORS FROM THE DISCONNECT SWITCH TO THE
CORRESPONDING NEW EQUIPMENT.
UTILIZE EXISTING 3 POLE CIRCUIT BREAKER IN PANEL "DPMB"(LOCATED
IN MECHANICAL ROOM 015) TO FEED THE NEW EQUIPMENT. REFER TO
THE MECHANICAL EQUIPMENT SCHEDULE ON SHEET E-001 FOR BREAKER
SIZE. PROVIDE A NEW FUSED DISCONNECT SWITCH IN THE
APPROXIMATE LOCATION SHOWN. MAKE FINAL CONNECTION TO THE
EQUIPMENT. COORDINATE WITH THE MANUFACTURER FOR THE FUSE
SIZES RECOMMENDED. PROPERLY LABEL THE DISCONNECT SWITCHES
TO INDICATE WHAT CIRCUIT THEY ARE TIED TO. ATTACH ON THE
DISCONNECT A 5"x7" LAMINATED FLOOR PLAN WITH THE LOCATION OF
PANEL DPMB HIGHLIGHTED.
DISCONNECT THE POWER FOR EACH OF THE ACC (OUTDOOR) UNITS
BEING REPLACED. RE-CONNECT THE POWER AFTER THE EQUIPMENT IS
REPLACED. COORDINATE THIS WORK WITH THE GC AND THE
MECHANICAL CONTRACTOR. THIS WORK MAY HAVE TO BE DONE AFTER
HOURS. UTILIZE THE EXISTING DISCONNECT SWITCHES AND REPLACE
THE EXISTING FUSES WITH NEW FUSES. COORDINATE WITH THE
MANUFACTURER FOR THE FUSE SIZES RECOMMENDED. RUN NEW
CONDUIT AND CONDUCTORS FROM THE DISCONNECT SWITCH TO THE
CORRESPONDING NEW EQUIPMENT.
UTILIZE EXISTING 20 AMP 3 POLE CIRCUIT BREAKER IN PANEL "DPMB"
TO FEED THE NEW EQUIPMENT. PROVIDE A NEW NEMA3R FUSED
DISCONNECT SWITCH IN THE APPROXIMATE LOCATION SHOWN.
SUPPORT THE DISCONNECT SWITCH FROM PIPES/UNISTRUTS AND
PROVIDE A PROPER CONCRETE BASE. MAKE FINAL CONNECTION TO THE
EQUIPMENT. COORDINATE WITH THE MANUFACTURER FOR THE FUSE
SIZES RECOMMENDED. PROPERLY LABEL THE DISCONNECT SWITCHES
TO INDICATE WHAT CIRCUIT THEY ARE TIED TO. ATTACH ON THE
DISCONNECT A 5"x7" LAMINATED FLOOR PLAN WITH THE LOCATION OF
PANEL DPMB HIGHLIGHTED.
FURNISH AND INSTALL A 120 VOLT, 20 AMP CIRCUIT BREAKER IN THE
EXISTING PANEL “OLA” TO FEED THE PUMP IN THE H-1 UNIT. THE NEW
BREAKER SHALL AIC RATING OF THE EXISTING BREAKERS IN THE
PANEL. SHUT DOWN, IF NECESSARY, SHALL BE KEPT TO A MINIMUM AND
BE COORDINATED WITH THE OWNER IN ADVANCE.
DISCONNECT THE POWER TO THE EXISTING UNITS BEING REPLACED.
THE EXISTING UNITS ARE 480 VOLT. THE NEW UNITS ARE 208 VOLT.
FURNISH AND INSTALL NEW CIRCUIT BREAKERS IN THE EXISTING PANEL
TO FEED THE NEW UNITS. RUN NEW CONDUIT, CONDUCTORS,
DISCONNECT SWITCH, ETC FOR A COMPLETE INSTALLATION. REMOVE
ALL EXISTING CONDUIT, CONDUCTORS, J-BOXES, ETC. THAT ARE NOT
BEING USED. ALSO REMOVE THE EXISTING DISCONNECT SWITCH
FEEDING THE EXISTING UNIT BEING REMOVED. PROPERLY CAP/ATER
SEAL ALL OPENINGS. REFER TO MECHANICAL DRAWINGS FOR MORE
INFORMATION.
DISCONNECT THE POWER AND REMOVE THE TWO EXISTING
DISCONNECT SWITCHES THAT ARE NOT BEING USED. RELOCATE THE
EXISTING WEATHERPROOF OUTLET AND ASSOCIATED CIRCUIT TO THE
APPROXIMATE LOCATION SHOWN. REMOVE UNUSED CONDUIT,
CONDUCTORS, ETC.
4 4
BID ALTERNATES
1. BID ALTERNRE #1: ELECTRICAL WORK ASSOCIATED WITH REMOVING OF
EXIST CRU-3.1 (IN ELEC/UPS ROOM) AND ASSOCIATED OUTDOOR
CONDENSING UNIT, DUCTWORK, PIPING, AND UTILITIES; REPLACE WITH NEW
PER PLAN. REFER TO ARCHITECTURAL AND MECHANICAL CONSTRUCTION
DOCUMENTS FOR MORE INFORMATION.
2. BID ALTERNATE #2: ELECTRICAL WORK ASSOCIATED WITH ADDING CRU-2.2
AND ASSOCIATED OUTDOOR CONDENSING UNIT, PIPING, AND UTILITIES PER
PLAN. REFER TO ARCHITECTURAL AND MECHANICAL CONSTRUCTION
DOCUMENTS FOR MORE INFORMATION.
3. BID ALTERNATE #3: ELECTRICAL WORK ASSOCIATED WITH ADDING CRU-1.4
AND ASSOCIATED OUTDOOR CONDENSING UNIT, PIPING, AND UTILITIES PER
PLAN. REFER TO ARCHITECTURAL AND MECHANICAL CONSTRUCTION
DOCUMENTS FOR MORE INFORMATION.
AutoCAD SHX Text CT cab
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OHA
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1LB
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OLA
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EMLA
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EMHA
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LCC
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AutoCAD SHX Text 2180 South 1300 East Suite 210 Salt Lake City, Utah 84106 Phone: 801 466 3996 Fax: 801 466 6022 mail@hhyassoc.com
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HNH
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AutoCAD SHX Text July 30, 2026
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AutoCAD SHX Text 334543-2202
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NO.
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ELECTRICAL ENGINEERING & LIGHTING DESIGN
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1220 SOUTH 300 WEST SLC, UT 84101 | 801-486-2222
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LLC
AutoCAD SHX Text Addendum #1
AutoCAD SHX Text 08/26/26
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| Sheets and Views |
| EP-101-EP-101 (24x36) |
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