Elterm Commercial Electric Boiler | 30–48kW 3‑Phase System Boilers

The Elterm Commercial Electric Boiler range (30, 36, 42 and 48kW) is a high‑output, three‑phase system boiler line built around Silver Line / Basic LED industrial controls for reliable commercial heating. These wall‑hung units provide fully modulating central heating with PV‑ready power limitation, making them ideal as primary or backup heat sources in commercial and large residential buildings.

Why Buy Elterm Commercial Electric Boilers (30–48kW)?

• Four power options – 30, 36, 42 and 48kW for accurate sizing to building heat demand.
  
• 3‑phase 400V operation with equal phase load for stable, balanced electrical supply.
  
• PV‑ready maximum power adjustment (e.g. 30/60/100%) to cooperate with on‑site solar and limit grid draw.
  
• Industrial Basic / Silver Line LED control with PID algorithm for smooth temperature control and reduced cycling.
  
• Heat‑pump friendly – can act as an electric backup/peak source alongside ASHPs or other low‑temperature systems.
  
• Suitable for sealed or open systems using appropriate hydraulic components.
  

Suitable For

• Commercial buildings, light industrial units and larger homes needing 30–48kW of heat.
  
• Hybrid systems where an electric boiler backs up a heat pump in cold weather.
  
• Sites aiming to decarbonise heating using PV, green tariffs or off‑peak electricity.
  
• Installations requiring no flue or combustion plant and low ongoing maintenance.
  

30–48kW Model Summary

Model	Output	Supply	Control
Commercial Electric Boiler 30kW	30kW space heating	400V 3‑phase	Basic / Silver Line LED, PID modulation
Commercial Electric Boiler 36kW	36kW space heating	400V 3‑phase	Basic / Silver Line LED, PV‑ready power limiting
Commercial Electric Boiler 42kW	42kW space heating	400V 3‑phase	Industrial LED control, staged/step modulation
Commercial Electric Boiler 48kW	48kW space heating	400V 3‑phase	Basic LED automation, PID, PV‑cooperation

Common Technical Features (30–48kW)

Specification	Details
Boiler Type	Commercial electric system boiler (heating only)
Power Range	30 / 36 / 42 / 48kW
Power Supply	400V 3N~ 50Hz, 3‑phase
Control	Basic / Silver Line LED, PID regulator, output limiting
Efficiency	Up to ~99% electrical‑to‑heat conversion
Max Flow Temperature	Typically up to 95°C (industrial series limit)
Installation	For closed or open heating systems with correct safety kit
Integration	Can work as main heat source or back‑up for heat pumps/other boilers