The Need
“Bill and I are looking to obtain and renovate the multi-use building across the street from our houses on Fairfield. The address is 3244 Fairfield. We will have 1500 sf of commercial space below and 10 apartments as shown in the design drawing attached. We will be going for LEED silver on the project.”
The following work scope is regarding 3244 Fairfield Ave (mixed use multi-unit (11 living units) building):
Full HVAC Design – Consultant will design the appropriate HVAC systems. Deliverables will include:
- Manual J Load Calculation (for residential load requirements) and/or ASHRAE RTS (for commercial Load requirements): Complete an energy model to determine the amount of heating and cooling requirements the building has. We will generate reports that will show the heating and cooling loads for all zones within the building.
- Manual S Equipment Selection: Based on the calculations generated from the energy model, we will select properly sized equipment, and will produce a written specification for all heating, ventilation, and air conditioning equipment. This will also include performance and installation specifications for the duct system.
- Manual D, Duct Design: For any ducted systems in the building, we will design and lay out a properly sized duct system, including registers, to fit within the structure of the building, which will be represented by a single-line diagrammatic scalable floor plan. For ductless systems, we will address distribution issues to ensure that each zone gets the proper amount of heating and cooling.
- Mechanical ventilation requirements and specification (For low load designs Ventilation system may serve as distribution system)
- All required LEED and Energy Star HVAC Documentation
Multi-family Mix Used Building:
- 11 Living Units
- Average Living Unit Conditioned Floor Area- 541 Ft2
- Office Space on First Floor
- Office Conditioned Floor Area -1224 Ft2
Thermal Performance Design:
- Wall insulation: Brick on Brick, R-8 InSoFast™
- Ceiling: Flat Roof: R-38 Batt
- Basement: Uninsulated
Average Living Unit:
Heating: 6381 BTU/H, Cooling: 5913 BTU/H
Office:
Heating: 26685 BTU/H, Cooling: 25685 BTU/H
Common Areas:
Heating: 5974 BTU/H, Cooling: 1387 BTU/H
Basement:
Heating: 23350 BTU/H, Cooling: 1762 BTU/H
What We Designed/Specified
- Heating and Cooling (No Auxiliary Heating):
- Living Units – Mitsubishi Electric-Trane 9,000 BTU/H EZ-Fit Indoor Unit/ 9,000 BTU/H Hyper Heating Outdoor Condenser
- Common Area- Mitsubishi Electric-Trane 9,000 BTU/H EZ-Fit Indoor Unit/ 9,000 BTU/H Hyper Heating Outdoor Condenser
- Office- Mitsubishi Electric-Trane 36,000 BTU/Vertical Air Handler Indoor / 36,000 BTU/H Hyper Heating Outdoor Condenser
- Distribution and Ventilation:
- Living Units- Transfer Fan’s Between Bedrooms and Main Living Area/ Broan AE50 Exhaust Only Ventilation Fan
- Office-Ducted AH Forced Air Distribution/Broan® HE Series Energy Recovery Ventilator, 210 CFM
- Auxiliary Dehumidification:
- Living Units-Santa Fe Ultra MD 33 In Wall Ductless Recirculating Dehumidifier
- Office-Santa Fe Ultra 70
- Basement-Santa Fe Advance90
- Controls:
- Living Units-Heating and Cooling Equipment controlled by Mitsubishi Standard Wall Mounted Remote Control, Dehumidification and Ventilation have independent controls.
- Office-Mitsubishi Kumo Station and Kumo Cloud
