Project Overview

The Office of Public Works upgraded the building’s heating to a clean, efficient LTHW system, improving comfort and reducing emissions with minimal disruption to day-to-day operations.

Scope of Works

• 2 × MasterTherm BA60iS inverter air-to-water heat pumps (≈35 kW class each)
• Zoned radiator-based LTHW distribution integrated with existing infrastructure
• BMS communications via Modbus for monitoring and control

System Description

Each unit provides modulating output to match demand in real time. Weather compensation, night setback and frost protection are handled natively by the onboard PLC.

Remote monitoring and performance tracking support proactive maintenance and assured comfort across office areas.

Project Results & Benefits

• Even, dependable warmth across all zones
• Energy-conscious operation with inverter modulation matched to load
• Reduced environmental impact by switching from fossil fuels to renewable heat
• Future-ready controls platform prepared for scaling or additional zones

Technical Highlights

• Radiator circuit balancing and differential‑pressure control valves maintain stable flows at varying loads.
• Primary buffer (where used) sized to protect compressors and maintain minimum runtime.
• Night setback and optimum‑start logic reduce energy without sacrificing morning comfort.
• Alarm notifications and secure remote access streamline maintenance response.

Energy & Carbon (SEAI)

Decarbonised LTHW production reduces combustion on site, eliminating flue‑related losses and compliance burden, while lowering operational CO₂ versus legacy oil/gas systems.

• Supports SEAI public‑sector energy and emissions‑reduction goals.

Performance metering/data can feed SEAI reporting dashboards.