S-02
HVAC controls and DDC programming
Control sequences for chillers, AHUs, FCUs, pumps and ventilation, written, simulated and tuned so plant runs stable and efficient.
S-02 / 01
Overview
Most of a building's energy goes into heating, ventilation and air conditioning, and most HVAC problems are control problems. We write and tune the control sequences for chillers, air handlers, fan coils, pumps and ventilation, test them before site, and commission them against real operating conditions.
Scope of work
- Sequences of operation for chilled water plants, AHUs, FAHUs, FCUs and VAV systems
- DDC controller programming and parameter tuning (PID loops, resets, staging)
- Pressure, temperature, humidity and CO₂ control strategies
- Variable speed drive integration for pumps and fans
- Plant optimisation: chiller sequencing, setpoint reset, free cooling where applicable
- Interfaces with packaged equipment controllers
Deliverables
- 01Written sequences of operation for consultant approval
- 02Controller programs and configuration backups
- 03Simulation test results before site
- 04Tuned loops with recorded trends
- 05Commissioning sheets per equipment item
Protocols and technologies
- DDC
- BACnet
- Modbus
- VSD/VFD
- PID control
- CO₂ demand control
Typical applications
- Chilled water plants
- Air handling and fresh air units
- Fan coil and VAV terminals
- Car park and kitchen ventilation
How we deliver it
- 1
01
Survey
We walk the site, review drawings and the BOQ, and agree what the system must do before anything is priced.
- 2
02
Design
System architecture, points list, controllers and network, sized to the real equipment and the consultant's specification.
- 3
03
Engineering & submittals
Shop drawings, panel layouts, wiring diagrams, sequences of operation and data sheets, submitted as one complete package.
- 4
04
Supply & installation
Controllers, field devices and panels supplied to the approved submittal, installed and terminated under our supervision.
- 5
05
Programming & integration
Sequences, graphics, alarms, trends and third-party interfaces are programmed and tested in-house before we reach site.
- 6
06
Testing & commissioning
Point-to-point checks, functional tests and witnessed commissioning, with every result recorded.
- 7
07
Handover & support
As-built documents, backups and operator training, followed by maintenance and support contracts.
RFQ · SYNEX
Discuss your project with an engineer
Share your drawings, BOQ or specification and we will reply with a clear scope and quotation.