PROJECT SPECIFICATION FOR Replace Existing HVAC Split System Units AT DJS- Waxter’s Children Center 375 Red Clay Road Laurel, MD 20724 FOR THE DEPARTMENT OF GENERAL SERVICES PROJECT NO: DD-591-210-003 PROJECT CLASSIFICATION – ‘A’ DATE: March 1, 2021 “MINORITY BUSINESS ENTERPRISES ARE ENCOURAGED TO RESPOND TO THIS SOLICITATION” STATE OF MARYLAND DEPARTMENT OF GENERAL SERVICES Ellington Churchill, Jr. SECRETARY 301 WEST PRESTON STREET BALTIMORE, MARYLAND 21201 BOARD OF PUBLIC WORKS LARRY. HOGAN, GOVERNOR PETER FRANCHOT, COMPTROLLER NANCY K. KOPP, TREASURER
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PROJECT SPECIFICATION
FOR
Replace Existing HVAC Split System Units
AT
DJS- Waxter’s Children Center
375 Red Clay Road
Laurel, MD 20724
FOR THE
DEPARTMENT OF GENERAL SERVICES
PROJECT NO: DD-591-210-003
PROJECT CLASSIFICATION – ‘A’
DATE: March 1, 2021
“MINORITY BUSINESS ENTERPRISES ARE
ENCOURAGED TO RESPOND TO THIS SOLICITATION”
STATE OF MARYLAND
DEPARTMENT OF GENERAL SERVICES Ellington Churchill, Jr. SECRETARY
301 WEST PRESTON STREET
BALTIMORE, MARYLAND 21201
BOARD OF PUBLIC WORKS LARRY. HOGAN, GOVERNOR
PETER FRANCHOT, COMPTROLLER
NANCY K. KOPP, TREASURER
DGS PROJECT No. DD-591-210-003
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DIVISION 1 - GENERAL REQUIREMENTS:
1. Scope of Work – DV-591-210-003
A. The successful contractor shall provide all labor, equipment, tools, materials,
insurance, and supplies, etc., required to remove two (2) existing Trane split system
HVAC units and replace the units in kind. Existing units are refrigerant cooled and
heated via boiler. See appendix for reference.
B. The new units shall be installed in the exact location of the pre-existing units using
the existing concrete pad, air ducts and electrical connections as required.
C. All associated refrigerant piping and insulation shall be replaced. No refrigerant
piping and insulation may be reused. Abandoned refrigerant piping, as indicated by
DJS Maintenance personnel, shall be removed. See appendix for reference.
D. The new units shall be connected to existing ductwork; it shall be the contractor’s
responsibility to make ALL measurements required to ensure proper installation with
little or no modifications, to unit or existing ductwork. Contractor shall clean existing
ductwork prior to making new connections.
E. Contractor shall supply new and install new thermostats for each unit as required. The
existing control wiring may be used if compatible to system. It is the contractor’s
responsibility to make the determination if the existing wiring is compatible with the
new system thermostats to be installed.
F. All associated electrical disconnects shall be replaced for a total of four (4)
disconnects. Any abandoned disconnects in the immediate vicinity of the condensing
or air-handling units shall be removed. Any wall penetrations due to the removal of
said disconnects shall be patched and repair as required. Abandoned disconnects will
be indicated by DJS Maintenance personnel.
G. It will be the contractor’s responsibility to determine if the existing electrical supply
will need to be upgraded, i.e., the related circuit breaker is the appropriate amperage.
If the electrical requires an upgrade, the contractor shall include the upgrade in the
base bid.
H. The contractor shall replace all isolation valves to the two (2) new air handling units
on the supply piping and to the return piping to each heating coil. If no isolation
valves exist, the contractor shall install new valves on the supply piping and the
return piping of each heating coil. Valves shall brass and be sized appropriately to the
existing piping.
I. The contractor shall install one (1) “y” style strainer after the newly installed supply
piping ball valves. The strainers shall have a ¾” hose connection, with chain and cap,
for system draining. The strainer shall be installed in an area and in such a way that it
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is easily accessible for maintenance and hose hook up. Combination isolation valve
and strainer will not be acceptable.
Alternate 1: Replace three (3) hot water pumps and the two (2) associated mixing valves in
kind. The contractor is responsible to coordinate with the existing building controls
contractor to properly interface the pumps and mixing valves into the existing building
controls. The contractor is responsible for all measurements to ensure proper installation
to the existing system.
Site Location: Waxter’s Children Center, 375 Red Clay Road, Laurel, MD 20724
NOTE: It is the Contractor’s responsibility to field check/confirm
that ALL new units are compatible with existing ductwork, wiring,
etc. prior to bidding. Submit ALL questions prior to bid.
2. SUMMARY OF WORK:
A. The Contractor shall be responsible for the proper removal and installation of ALL
HVAC equipment associated this project.
B. The Contractor shall comply with ALL applicable Electrical / Mechanical codes that
may apply for the duration of this project.
C. The work shall be done in accordance with the terms, conditions and specifications
include herewith and per applicable regulations and best practices for this type of
project.
D. ALL work shall be accomplished within 90 calendar days from the date designated
by the notice to proceed issued by Department of General Services. Liquidated
damages in the amount of $250.00 per day apply to this contract.
3. SITE INSPECTION:
A. All prospective bidders are encouraged to attend the pre-bid conference and
familiarize themselves with all requirements for the project. Failure to attend the pre-
bid conference will not relieve the successful bidder from complying with the
requirements of these specifications at no additional cost to the State of Maryland.