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This is a site plan image document for the Spencer Readiness Center Rooftop Terminal Unit (RTU) replacement project, prepared by Iowa Department of Public Defense (DPD). The project involves the replacement of seven rooftop units at the Spencer Readiness Center located at 11 East 23rd Street, Spencer, Iowa 51301. A mandatory site visit is scheduled for June 30, 2026, at 10:00 a.m., with all scope-related questions to be addressed during this visit. Bids are due July 8, 2026, and must be submitted as a lump sum total via the IMPACS system with no public bid opening. Interested bidders must RSVP to philip.payton@dpd.iowa.gov and koby.w.higgins.nfg@army.mil.

The scope requires replacement of existing Lennox rooftop units with new Lennox Enlight RTUs equipped with factory-installed options including a High Performance Economizer, multi-speed ECM direct drive supply fan, BACnet IP and MS/TP protocols, R-454B refrigerant, low NOx system, combination coil/hail guards, and MERV8 filtration. Thermostats must be replaced with Honeywell TH8321WF VisionPRO 8000 Smart Thermostats. The project includes comprehensive gas line work with replacement of unions and ball valves, roof curb adapters, high wind hold-down brackets, and roofing penetration sealing compatible with DuroLast Inc. roofing systems. The issuing officer is Philip Payton (515-975-6211, philip.payton@dpd.iowa.gov).