14/05/2025
HVAC Design:
1. Project Information
Project name and location
Building type and usage
Design standards and codes (e.g., ASHRAE, local building codes)
2. Load Calculations
Heat load calculation (cooling & heating)
Room-wise or zone-wise load summary
Peak load conditions
Software used (e.g., HAP, Carrier E20-II)
3. System Selection
Type of HVAC system (e.g., VRF, Chiller, AHU, FCU, Split, Package Unit)
Justification of system choice based on load, budget, and usage
Energy efficiency considerations
4. Equipment Sizing and Selection
Chillers, VRF outdoor units, AHUs, FCUs, etc.
Airflow rates (CFM), static pressure, capacity (TR or kW)
Equipment layout and manufacturer data
5. Duct Design
Duct sizing and layout (velocity or equal friction method)
Material and insulation specifications
Static pressure calculations
Duct routing plan (ceiling void, shaft, etc.)
6. Piping Design
Refrigerant or chilled water piping layout
Pipe sizing (diameter, insulation)
Hydraulic calculations (flow rate, pressure drop)
Condensate drain piping
7. Ventilation Design
Fresh air and exhaust air calculation (as per ASHRAE 62.1)
Placement and sizing of louvers, ducts, and fans
CO₂ control, if applicable
8. Control System
BMS/Automation interface
Thermostats, sensors, and control logic
Sequence of operation
9. Electrical Requirements
Power load of equipment
Circuit and breaker sizing
Control wiring diagram
10. Drawings & Layouts
HVAC layout plans (ducting, piping, equipment)
Reflected ceiling plans (for diffuser/grille locations)
Equipment schedules
Sections and details
11. BOQ and Technical Specifications
Itemized Bill of Quantities
Equipment and material specifications
Installation standards
12. Compliance & Coordination
Coordination with architectural, structural, and electrical drawings
Safety and fire protection integration
Acoustic and vibration control measures.
