CTC EcoZenith i255 L Heat Pump Interface Indoor Module Low Model
Low indoor module with color touchscreen, internal immersion heater, and copper DHW coil. Rated for multi-source EnergyFlex loops. Energy class A+++.
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CTC EcoZenith i255 L Heat Pump Interface Indoor Module Low Model
Establish a complete, future-proof, and highly efficient green energy hub inside your property with the CTC EcoZenith i255 L.
This low internal multi-source module functions as the intelligent brain of your network, interfacing natively with CTC's high-efficiency air-to-water heat pumps (EcoAir range) or ground source/brine devices (EcoPart range). Thanks to the proprietary onboard EnergyFlex design ecosystem, you gain complete freedom to install a single heat pump today and smoothly add thermal solar collector panels, external solid fuel biomass boilers, or water-jacketed fireplaces down the line without needing to alter your buffer tank asset.
Clean Fresh Water Generation and Consolidated Immersion Booster
The CTC EcoZenith i255 L comes factory-equipped with a highly efficient and completely maintenance-free domestic hot water configuration powered by an integrated internal copper finned coil. Because cold mains water is heated instantly through instantaneous thermal delivery as it streams through the high-surface coil track, the household receives a continuous supply of fresh, hygienic, and legionella-safe domestic hot water. Within the acoustic-jacketed and insulated frame enclosure, vital system parts come pre-assembled, including multi-stage internal immersion heater elements that act as automatic backup booster energy during freezing peaks.
Advanced Touch Interface and Intelligent System Optimization
The internal appliance is managed via an integrated, high-resolution color touchscreen interface positioned cleanly on the front panel display plate. The automation hub actively tracks real-time thermal loading and modulates the compressor speeds and auxiliary immersion relays to guarantee that utility bills remain strictly restricted. The control station is ready for remote internet gateway modules, granting users complete freedom to program, monitor, and alter temperature curve fields away from home via a mobile app. The white powder-coated steel casing delivers a premium, uniform appearance.
Reduced Height Footprint Optimized for Low Ceilings
Boasting a restricted structural height profile of 1656 mm, this low (L) configuration variant is specifically engineered to overcome deployment challenges inside older residential basements, low-clearance cellar vaults, or narrow plant cells. Despite its lower height layout, it preserves the standard width of 595 mm and a depth profile of 672 mm, allowing it to align flush with other cabinetry sets. All pipe connection interfaces are positioned on top of the enclosure to ensure an organized, vertical layout, and the module ships equipped with loop circulation pumps and an automated system mixing shunt assembly.
Product Advantages:
- Low Profile Sizing: Only 165.6 cm high – ideal for low-clearance boiler rooms and basements.
- EnergyFlex Infrastructure: Unrivaled structural versatility to seamlessly tie solar arrays or fireplaces to your heat pump.
- Hygienic On-Demand DHW: Integrated copper coil heats fresh water instantly via through-flow for high safety.
- Intuitve Color Touchscreen: Generous high-resolution front display for straightforward parameter configurations.
- Consolidated Internal Array: Factory-packs the loop circulation pumps, automated mixing shunt, and booster elements.
Technical Specifications:
- Model: CTC EcoZenith i255 L (Low Model)
- Article Number (SE RSK): 6258005
- Product Category: Indoor system module / electric boiler with integrated heat pump management
- Domestic Hot Water Setup: Internal finned copper heat exchanger coil (instantaneous flow)
- User Interface Layout: Onboard digital color touchscreen
- Installation Configuration: Floor-standing (Low profile)
- Pipe Connection Array: Top-mounted connection ports
- Dimensions (WxDxH): 595 x 672 x 1656 mm
- Net Weight: 166.0 kg
- Electrical Supply: 3x400V 50Hz
- Energy Efficiency Class: A+++ (Applies to linked system at space heating 35°C)
Please note that the manufacturer’s full warranty is not applicable for units bought in Sweden and installed outside Sweden.

