GOC754265 - Consulting - HVAC System Air Balance and Recommissioning

Consultant is required to review the HVAC system for the main AHU's throughout the Winnipeg Tax Building and perform an Air balance of the 6 RTU's and 17 AHU's throughout the building. The consultant should review the current air system and note any deficiencies or opportunities for improvement. This includes the chiller and boiler along with associated heating and cooling pump loops. Initial investigation to include inventory and location of all VAV's and analysis of required space air flows and fresh air supplies as per ASHRAE standards. TAB consultant to perform an entire system air balance for each VAV, Supply fan and return fan and rebalance the entire system to return the system to its original design intent. Final TAB report to include an inventory of each VAV along with Max, min airflows and maximum, minimum and normal operating airflows and pressures for each supply and return fan. HVAC as builts should be provided with locations of VAV's and VAV schedule as per new air flows. All RTU, VAV and AHU inputs and outputs must be tested and verified by controls technician during the recommission portion of this work. This includes but is not limited to all DDC inputs (temperatures, pressures, amps, volts, airflow stations etc) outputs to be tested include confirming calibrations and confirming operation of all outputs to VAV dampers, vortex dampers, outside air dampers and control valves. A complete recommissioning report showing initial conditions, final conditions and adjustments to be provided. Report to include any deficiencies noted including equipment malfunction, not able to calibrate. Also note any design deficiencies as they relate to the air balance of the VAV system and AHU system along with recommendations for improvement.