UNH Adams Tower Chiller Replacement

2026-11-03

The University is soliciting proposals for a turn - key , replacement of an existing rooftop air - cooled chiller . The project shall be executed as a like - for - like (“ in - kind ”) replacement , maintaining existing system configuration , piping layout , control sequences , and building structure . The existing chiller is a Trane air - cooled unit , nominal 120 tons , serving a single - loop chilled water system with no redundancy . Existing pumps , piping , and downstream equipment shall remain . The Contractor shall provide single - point responsibility for all aspects of the work required to deliver a fully operational chiller system . The Contractor shall furnish all labor , materials , equipment , engineering , supervision , subcontractors , and coordination necessary to complete the project , including but not limited to the following : A . Scope • Verify existing field conditions , piping connections , electrical service , and access constraints . • Select a replacement air - cooled chiller that : o Is nominally 120 tons o Operates on 460V / 60Hz / 3 - phase power o Is compatible with the existing chilled water system and pumps • Prepare and submit all required equipment submittals and documentation . B . Permits and Regulatory Compliance • Assist the University with permit process . • Prepare and submit permit applications as required . • Coordinate required inspections . • Comply with all applicable federal , state , and local codes , including NH Mechanical , Electrical , and Energy Codes . C . Demolition and Removal • Recover and properly dispose of all refrigerant in accordance with EPA regulations . • Drain , manage , and dispose of existing propylene glycol . • Demolish and dispose of existing glycol feed system . • Disconnect existing electrical , piping , and control connections . • Provide all rigging , crane services , and logistics . • Remove the existing chiller from the roof and dispose of it off - site . • Protect roofing systems and adjacent equipment throughout removal activities . D . New Chiller Furnishing and Installation • Furnish and install a new air - cooled chiller suitable for outdoor rooftop installation on existing dunnage . • Rig and set the chiller on the existing rooftop structure . No structural modifications are permitted . • Reconnect to existing chilled water piping and electrical service . • Provide and install : o New flexible pipe connections o New isolation valves at chiller connection points o Required accessories for proper operation

New Hampshire

2026-04-28