Starting with the Switchboard
The new MSSB comes first on the electrical side. All of the new plant and its controls take their supply from this board.
Everything downstream depends on it, so circuit allocation and protection need to be settled before any cable goes in.
Running Power to the New Plant
Chillers are typically the largest loads in a central plant, so their supply cabling needs the most planning. Routes have to suit the plant layout and leave the mechanical trades room to install and maintain their equipment.
The towers and pumps follow the same approach on a smaller scale.
New DDC for the Plant and Air Handling Units
The new DDC runs across both the central plant and the air handling units (AHUs). The AHUs need to work properly with the central plant for the building to respond to changing load.
Our part is installing and terminating the field wiring the controls depend on.
Coordinating with Icon Logic
Icon Logic is working with us on the controls upgrade across the whole plant. What they need from us is wiring that’s correctly labelled and matches the documentation.
Project Challenges and Solutions
Fitting the Electrical Work Around Plant Deliveries
Central plant equipment usually arrives and gets set in place in stages. At each step, the electrical program sits behind the mechanical one.
Where we can, we’re getting containment and board work in ahead of each delivery. Final terminations wait until each item is in position.
Getting the Controls Handover Right
Faults in controls wiring are slow to find once programming starts, because they can look like software problems. That costs time for both teams.
Our plan is to test each point before it goes across to Icon Logic. If something misbehaves during commissioning, the wiring can then be ruled out quickly.
Client Feedback
Works are still underway at Troode Street, so there’s no client feedback yet. When complete, the building will have new central plant equipment running under new DDC control.
