Specifications include, but are not limited to: Replace existing packaged rooftop units with packaged HP’s with matched capacity for cooling and configuration for dampers and airflow. Contractor to Remove existing packaged Rooftop units. Replace with new Heat Pump packaged rooftops with similar configurations. Provide units with the latest refrigerant. Provide new roof curbs and coordinate with a roofing company for sealing and warranting for leaks during the warranty period. Reconnect existing ductwork to new AHU’s. Reconnect and coordinate all electrical requirements for a fully functioning system. Provide with packaged controls to meet the original configuration for dampers and sequence of operation with the exception of heating mode. In heating mode, the AHU’s will provide heat through the heat pump operation. If the heat pump cannot operate in heating mode cannot maintain setpoint temperatures, an auxiliary relay will send a command and the existing boiler heat will provide heating. And the reverse will occur when the HPs are able to provide heat to maintain heating setpoint. The Contractor to coordinate and provide pricing for integration, reconnection to BMS of new AHU’s controls and sequences with existing BMS. Provide, install, and coordinate location of new thermostats for each AHU and its perspective zones. Provide rebalancing of new AHUs to original design conditions The Contractor to provide a fully functioning system.
