25_S_Charles_Environmental_Equipment_OTHS-OTHS-27-032-S_DC_Heating_and_Cooling_PM.pdf
PDF 115 KB Posted
- Attached to
- Data Center Heating and Cooling
- Solicitation number
- BPM059482
- Issued by
- Baltimore City, Maryland
About this file
This is a technical inventory and equipment specification document for the Maryland Department of Human Services' Office of Technology for Human Services (OTHS), supporting the Data Center Heating and Cooling preventive maintenance solicitation OTHS-27-032-S at 25 S. Charles Street, Baltimore. The document details the precise equipment covered under the contract, including two Liebert EXM 480V UPS systems (100kVA each) with redundant modules and supporting infrastructure located on the 12th floor server room, comprising battery cabinets, maintenance bypass cabinets, and distribution cabinets with specified electrical ratings and monitoring capabilities. Additionally, the inventory includes three Liebert CRV precision cooling units (35 kW each) equipped with advanced controls, humidification, dehumidification, and filtration systems, also located on the 12th floor. Three air-cooled drycoolers (Model DDNT350A) and one dual-pump glycol skid (Model D7.5A, 7.5 HP) are positioned on the 8th floor parking garage to support the cooling infrastructure. The document provides serial numbers for all major components and detailed technical specifications for maintenance technician reference.
The inventory document serves as the technical baseline for bid pricing under the firm-fixed-price contract structure covering the one-year base period from January 30, 2027 through January 29, 2028, with no renewal options. All pricing must be fully loaded to include labor, overhead, travel, diagnostics, consumables, and equipment replacement components, with no additional fees permitted. The solicitation is designated as a Small Business Reserve (SBR) set-aside restricted exclusively to certified Maryland SBR vendors, and bidders must demonstrate three consecutive years of comparable mission-critical data center service with OEM factory-trained technicians on Liebert and Vertiv platforms. The contract includes a guaranteed four-hour on-site emergency response requirement with $250 per hour liquidated damages for missed arrivals, and all replacement materials must be mercury-free. Federal funds are involved, requiring submission of federal debarment and non-collusion certifications.
View the file
Other files
On GovTribe
Work with this file
- Download the original file
- Contacts named in this file
- Similar government files
- Ask GovTribe AI about this file
Text version
DC Heating and Cooling Preventive Maintenance
OTHS/OTHS-27-032-S
25 S Charles Environmental Inventory
1.0 Liebert EXM 480V – Location 12th Floor Server Room
Liebert EXM Single Module UPS System each consisting of the following: Two (2) model 51SA100EBA01T7Z, with the following features:
• System Input Voltage of 480V, 60Hz, 3 Phase, 3 wire plus ground
• System Output Voltage of 208/120V, 3 Phase, 4 wire plus ground
• Fixed Capacity 100kVA UPS System
• System includes One (1) 50kVA 480V redundant module
• 480V Native Output Voltage
• Single Input Configuration
• DC Ground Fault Detection
• One (1) IntelliSlot Unity Dual Protocol Card; P/N: IS-UNITY-DP; Monitoring and configuration of Vertiv products and environmental sensors through stand-alone Web UI or integration with Trellis™, Liebert Nform, LIFE™ Services. Supports third-party management systems using SNMP, Modbus or BACnet.
• Transformer-Free Architecture - Efficiency up to 96% in double conversion mode
• Unity Power Factor Rating - Delivers more usable power per kVA
• Load Power Factor Support - Supports loads 0.5 lagging to unity without derating
• Energy Optimization Mode (Eco-Mode)
• 65kAIC Rating - Provides interrupting rating and labeling of 65kA
• Active Power Factor Corrected IGBT Input Converter
• PWM transistorized (IGBT) inverter
• Continuous Duty Static Bypass Switch
• Input Contacts - Dry contacts are available for functions including monitoring external breakers, on-generator signal, and other functions
• Output Contacts - Dry contacts are available for functions including a permissive signal to maintenance bypass SKRU, to trip external breakers, and other functions
• Generator Load Control - Suppresses battery charging reducing power demand by an external signal. Shifts unit from Eco Mode to double conversion (if applicable), and synchronizes the inverter output with the bypass
• Automatic retransfer - Provides return to inverter power after an overload
• DSP based controls - Provides digital control of power conversion and system operation
• Backlit LCD display - Monitors power conversion, UPS operation and utility conditions.
Deviations are logged for troubleshooting
• Temperature-Compensated Charging/Battery Load Test
• Bottom cable entry to UPS, top cable entry through matching bypass or optional wiring cabinet
• Front only service access
• Local Emergency Power Off (EPO)
• LIFE™ Services for the 1st year
• IP 20 enclosure
• Casters and leveling feet
• UL and cUL Listed to UL Standard 1778 5th Edition
Two (2) Liebert EXM Battery Cabinet System(s), model 51BPEMCA2L, with the following features :
• 12 min : Run Time at Ordered KVA
• 12 min,2 -880 MM External Cabinet(s) of CSB HRL12200WFR Batteries
• Cabinet Mounted Left Attached to Module
• The battery is provided with a 3 year full warranty
Two (2) Maintenance Bypass Matching Cabinet(s), model 51MBE32AA0R1U4W with the following features:
• 3 Switching Devices (BIB,MBB,MIB)
• 175 Amp Breaker Trip Rating
• Key Interlock (SKRU)
• Cabinet Mounted Right Attached to Module with connecting cables factory supplied
• 200 MM - 7.9 inches Frame Size
• Top or Side Access required for MBC Installation.
• Front Access service design
• SNMP Communication
Two (2) Distribution Cabinet(s), model 51X100DCHALA0M5 with the following features:
• 600 MM - 24 inches Frame Size
• K20 Output Transformer Included
• Input Voltage of 480V, 60Hz, 3 Phase, 3 wire plus ground
• Output Voltage of 208/120V, 3 Phase, 4 wire plus ground
• Cabinet Mounted Right Attached to Module with connecting cables factory supplied
• No Input Breaker
• Distribution o L: 1x Panelboard o H: 72 pole, 400A: Panelboards o 80% Subfeed breaker rating
• Monitoring o SNMP Communication
• Front Access service design
• Distribution Cabinet Startup is included
Make: Vertiv Geist
Model Number: NU30020L
Serial Number: MA23100810
Serial Number: MA23100811
Serial Number: MA23100812
Serial Number: MA23100813
Serial Number: MA23100814
Serial Number: MA23100815
Serial Number: MA23100816
Serial Number: MA23100817
Serial Number: MA23100818
Serial Number: MA23100819
Serial Number: MA23100820
Serial Number: MA23100821
Serial Number: MA23100822
Serial Number: MA23100823
2.0 Liebert CRV – Location 12th Floor Server Room
Quantity (3) Liebert CRV Water / Glycol Precision Cooling System
• Configuration Number: CR035RW1A7SH1811P0U0P0ADW
• Model Number: CR035RW1A70ADW
• Nominal 35 kW, 120 kBtuh at approximately 90F, 27% RH
• 460 Voltage, 3 Phase, 60 Hz
• Condensate Pump 65k SCCR
The Liebert CRV is a precision cooling unit located within a row of heat generating IT equipment racks. It is capable of performing all the necessary functions of a precision air conditioner including cooling, humidification, dehumidification, air filtration, and condensate management. Air enters the unit from the hot aisle, is filtered, cooled and conditioned, then expelled into the cold aisle through a supply air baffle.
The supply air baffle allows the air leaving the cooling unit to be directed to the racks the Liebert CRV is conditioning; maximizing its effectiveness, reducing the chance for hot spots, and improving the overall system efficiency.
System Details:
• Liebert iCOM control system with 9” Color Touch Display
• 2T temperature sensors to measure air temperature entering server racks - quantity 3
• Adjustable supply air baffle system
• Variable speed EC plug fans
• Digital scroll, variable capacity compressor utilizing R-410A
• Crankcase compressor heater
• Evaporator Type: slab, copper tubes - aluminum fins with hydrophilic coating
• Electric Reheat
• Steam Generating Humidifier
• Compliance with ASME A112.1.2 section 2.4.2 (backsiphonage testing)
• Filter Rating: MERV 8 per ASHRAE 52.2 (30% efficient by ASHRAE 52.1)
• Locking Disconnect Switch
• Top and Bottom electrical and piping connections
• One remote shutdown terminal
• One alarm contact
• The Liebert IntelliSlot Unity Card (IS-UNITY-DP) provides ground fault isolated RS-485 Modbus, BACnet IP & Modbus IP network connectivity to Building Management Systems for unit monitoring and management. Also, provides ground fault isolated 10/100 baseT Ethernet connectivity for unit monitoring and management. The supported management interfaces include: SNMP for Network Management Systems, HTTP for web page viewing, SMTP for email, and SMS for mobile messaging. This card can support dual IP and 485 protocols simultaneous.IS-UNITY-DP card is factory-installed in an IntelliSlot. • Hot air rear return with front cold air discharge
• Front and rear service and maintenance access only
• Installation casters with leveling feet
• Powder coated panels
• Enclosure:Standard Unit, Standard Color: ZP-7021 – Black Gray Matte
• Mounting Requirements - Floorstand
• 12 inch Floorstand
• Qty of (1)per Unit LT460-Z25 Zone Leak Detection Sensor Included
• Server rack style rear door
• Superior Service Access Panel
Make: Vertiv
Model Number: CR035RW1A70AED
Serial Number: Y23M003028
Serial Number: Y23M003206
Serial Number: Y23M003041
Branch Circuit Breakers : SquareD Bolt-on: QOB QOB-VH Style (240VAC Rated)
• (20) 10kA, 2 Pole 30A
4.0 Drycoolers & Pumps – Location 8th Floor Parking Garage
Quantity Three (3) Liebert Air-Cooled Drycooler, Model DDNT350A
460 Volts, 3 Phase, 60 Hertz Power Supply, The standard drycooler arrangement includes a direct drive drycooler (Standard or Quiet- Line), with fan cycling and controls for single pump operation. Direct drive, single fan drycoolers are standard with fan speed control and pump control.
Quantity One (1) Drycooler Dual Glycol Pump Unit, Model D7.5A,
7.5 HP Two single stage, end suction, close coupled, high efficiency pumps are mounted on a galvanized steel base and enclosed with a louvered aluminum enclosure. A flow switch is included to monitor glycol flow and signal the drycooler when to switch power from the primary pump to the standby pump.
An 8.8 gallon expansion tank is included to control surges in the system. Each compression tank includes Sight Glass, Drain Valve, Airtrol Fitting and is protected by a 50 PSI Relief Valve.
File details come from the government source that posted it. Updated .