Replace HVAC at B706

Project Description

Scope consisted of the replacement of AHU-1, A/C-1, HW Coils and Circulating Pump, including the removal and replacement of AHU-1 and associated CU-1 which serves the office area. The intention was to disconnect sufficient ductwork to facilitate the removal of the old unit, and install the new unit. The hot water piping was isolated by means of existing valves (assumed to be in working order) and disconnected at unions nearby. CU-1 is located on the roof area near where the MUA is currently located, above the boiler room. Sheet metal fittings / transitions were fabricated and installed to accommodate the layout of the new unit. Insulation patching was required where existing was removed, as well as insulating any new ductwork.

Also, part of the scope was to remove MUA-1, Ductwork and Exhaust Fans, including the removal of the existing MUA, associated ductwork, (2) exhaust fans, and filter rack.

Moreover, Replace AHU-2, HW Coils and Circulating Pump: Option 2 is similar in nature to the base bid. The unit for Bid Option 2 is larger, but is without cooling. The intention is to disconnect sufficient ductwork to facilitate the removal of the old unit, and installation of the new unit. The hot water piping will be isolated by means of existing valves (assumed to be in working order) and disconnected at nearby flanges. A temporary platform will be constructed to assist in removal and replacement of the AHU. Insulation patching will be required where existing was removed on the hot water piping, as well as the outdoor air to the AHU.