Stirling Square

Project Overview

Jaguar Projects were appointed to deliver a comprehensive lifecycle replacement programme at Stirling Square. The scope included the replacement of LTHW/CHW/Condenser primary and secondary pumps, a full BMS upgrade across all floors with a new Head End PC, a new fire alarm installation throughout the building (including tenanted floors), full refurbishment of the existing Air Handling Units, and the replacement of the Landlord Distribution Boards along with a new Central Battery System.

Scope of Works

The project involved the replacement of multiple critical building services while the building remained fully occupied by both commercial and residential tenants. This required exceptional planning and phased delivery, with works undertaken during both normal hours and out-of-hours to ensure zero disruption to occupants and building operations.

The existing BMS was fully replaced with a new Trend system, including new controls within existing MCCPs, a new backbone network, and a new Head End PC operating on IQ Vision. Existing field sensors were retained where possible, subject to verification, with faulty or outdated devices replaced as required.

System pumps serving LTHW, CHW, and condenser water systems were replaced with new variable-speed, inverter-driven pumps to support future efficiency gains and enable pressure control when floors are later converted to VRF systems. Pipework isolation valve replacements were completed using liquid nitrogen freezing techniques to avoid downtime. Pumps were replaced individually, followed by localised PCP flushing and water treatment before reconnection to the main system and full BMS re-integration.

Two main office AHUs located in the basement plant room underwent full refurbishment, including new EC fan walls, new heating and cooling coils, new condensate trays, internal cleaning and repainting, lighting upgrades, and external patch repairs. A roof-level toilet AHU also received a new fan, new coils, and a full internal refurbishment. Due to restricted access, all new equipment and waste materials were craned to and from the roof. New access panel fittings were installed and airtightness tested on completion.

Surface water and foul water sump pumps were replaced out-of-hours due to the need to maintain continuous operation of the building. All pumps were fully tested to verify float control functionality and alarm operation.

Landlord DBs were replaced on a phased basis to minimise disruption. Existing boards were validated beforehand to confirm circuit accuracy and ensure new boards reflected corrected and updated information. Temporary lighting was installed in affected areas, including stairwells during the Central Battery System replacement which supports emergency lighting throughout landlord spaces.

The building’s main fire alarm panels were replaced in phases to maintain a fully operational life safety system at all times. Interfaces with tenant-retained panels were coordinated closely with the incumbent fire alarm engineers to ensure complete system compatibility and post-installation verification. The existing PAVA system was retained in full.