CTC News

CTC launches a completely new heating product

CTC has launched a completely new heating product for the Swedish and European markets. CTC EcoZenith is an intelligent all-in-one tank that is capable of controlling most devices and handles both heating and hot water. It meets all the requirements imposed by new, flexible heating systems.

The CTC EcoZenith I 550 is a heating product with almost limitless possibilities. It is designed for large premises and large single-family houses with water-based heating. It is the first ever product that can handle all heat sources with both high and low temperatures: wood, wood pellets, solar heating, oil, gas, heat pumps. These heat sources can simply be connected to the CTC EcoZenith.

The built-in control system controls up to three heating systems, each with a separate indoor sensor – for example a radiator circuit with two underfloor heating circuits. A built-in solar coil allows solar heating to be connected without a separate control system.

A neglected corner of the heating market

“The need for an intelligent tank arose when we decided to launch heat pumps for large premises. We started looking for a modern, flexible tank that we could sell under our own brand,” explains  CTC's Marketing and Sales Manager.

The result was disappointing. There wasn’t a single tank on the market, either in Sweden or abroad, that met prevailing requirements. So CTC had to sit down and design one.

Two tanks in one

The CTC EcoZenith I 550 contains two tanks separated by an insulating layer so they maintain two different temperatures. This provides optimal function and operating economy.

The upper and lower tank are connected by heat distribution pipes specially designed for optimal layering of the solar heat throughout the volume of the tank, and to create a flow through the tank, for example when wood is burned.

This means that CTC EcoZenith satisfies two opposing needs:

1. Low temperatures (in lower part of tank).
The water supplied to the heat pump must be as cool as possible to maximise the efficiency rating. The water temperature must also be cool for solar heating and radiators.

2. High temperatures (in rest of tank).
The water temperature for tap water must be as high as possible.

Built-in advanced features and control options

Control and regulation of heating systems is very complex. High comfort, low energy consumption and reliable operation must all be achieved.

“Heating systems are becoming increasingly complex as customers demand more flexible, future-safe solutions. The multi-fuel tank is an important part of an effective integrated solution," comments Kent Karlsson, Technical Development Manager at CTC.

The CTC EcoZenith I 550 is a few steps ahead, thanks to several built-in advanced features and control options:
 

• Automatically identifies the technical design of the heating system and detects which heat sources are connected.
• Prioritises the most economical method for heating of premises and tap water.
• Controls one or more heat pumps for bedrock, soil, lake and air-to-water heating. Detects operating times and number of starts. Continuously decides which heat pump to put into operation for optimal economy, comfort and lifespan.
  
   

High hot water capacity

The CTC EcoZenith I 550 and CTC EcoZenith C 530 each contain two 20-metre hot water coils with internal helical fins.

The CTC EcoZenith I 550 has a flow capacity of 40 litres per minute. It can deliver over 600 litres of 40 ˚C hot water at 22 litres a minute – enough for 15 people to take showers at once. The hot water is legionella-safe. It never remains stagnant as in an ordinary water heater.

The CTC EcoZenith I 550 is equipped with two immersion heaters as standard (9 + 9 = 18 kW), and has an additional connection for an immersion heater (9 kW).

Three models for different needs

1. CTC EcoZenith I 550: 500 litre system tank, control & intelligence,
2 hot water coils, 1 solar coil, 2 immersion heaters.
2. CTC EcoZenith C 530: 500 litre buffer tank, 2 hot water coils, 1 solar coil.
3. CTC EcoZenith 510: 500 litre buffer tank.

All three models are insulated with a 90 mm layer of injection-moulded polyurethane (PUR). Despite their large capacity, the tanks are compact and compatible with standard doorways and ceiling height.