Technical data
66
CTC EcoZenith i250 
Installation
Energyflex is a collective term that describes CTC's unique opportunity for 
maximum flexibility and combining difference heat sources in a simple way. 
The most common combination is a heat pump and electric boiler.
It is worth noting here that when installed the CTCEcoZenithi250 can serve 
as an electric boiler alone, but it can subsequently be augmented with:
  CTCEcoPart Heat Pump (ground source))
  CTCEcoAir Heat Pump (air to water)
  Solar Energy
The CTCEcoHeat/EcoZenith now has integrated functionality for simple 
augmentation with
  Solar Energy
 Pool
  Wood-Fired Heating
Regarding wood-fired heating:
The integrated "Differential thermostat function" control initiates the charge 
from, e.g., the existing wood-fired system or fireplace when the temperature 
is higher than it is in the CTCEcoHeat/EcoZenithi250
Bear in mind that it can also be a good idea to install an automatic charger 
that can protect the wood-fired system from condensation, etc
If the wood-fired system needs more water than the 223 l contained in the 
product, the system needs to be supplemented with an accumulator tank.
Example of wood-fired system with group 
of chargers
Energyflex can also be used to draw energy, e.g. to heat 
a swimming pool
!
Connecting external systems can seriously affect the EcoZenith’s operation and 
performance and can therefore produce undesirable effects if the system is not 
installed correctly.
If you are unsure how to make the connection, contact CTC for suggestions on 
how to install the system.
Schematic diagram only The installer adds expansion vessels, safety valves, etc., and sizes the system.
13. Energyflex










