Case Study · Commercial · AHU Refurbishment
Pembroke Offices
AHU Refurbishment
50 Pembroke Court, located approximately 35 miles southeast of London, provides flexible open-plan office space with excellent connectivity to London stations and the Channel Ports. Following a comprehensive front-of-house refurbishment, the building required an upgrade to its AHUs to enhance the efficiency and performance of its HVAC system. The project aimed to ensure optimal air quality and comfort for its tenants, aligning with the modernised aesthetic and functionality of the newly refurbished front-of-house areas.
Project Overview
This case study outlines the completed AHU refurbishment, detailing the specific upgrades and improvements made to both the supply and extract units within the rooftop plantrooms. Internal patching of the AHU casing was performed as required throughout, with any rusted areas treated with red oxide primer.
What We Did
Full Coil Removal & Replacement
All AHU-mounted coils, including the frost coil, heating coil, run around coil, and cooling coil, were removed. A new reverse cycle coil was installed in place of the removed coils.
New Ziehl EC Fan Bulkhead
The existing belt-driven supply fan and motor were removed. A new fan bulkhead was supplied and fitted with three Ziehl EC fans. Fan power cables were wired to an isolator switch, and the controls were wired to a potentiometer.
84kW EHB Installation
A new free-issued Electric Heater Battery (EHB) was installed, consisting of two 42kW EHBs to provide a total of 84kW heating capacity. All necessary metalwork to fabricate the EHB duct heater section was supplied and installed. Wiring was handled by other contractors.
Freeze Protection & Filter Monitoring
A new filter bulkhead was introduced to prevent any risk of freezing in the system during colder months. An inlet damper was installed for better monitoring of filter status, helping maintain air cleanliness and reducing maintenance costs.
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