Technical data

68
CTC EcoZenith i250
Installation
The flexibility in the CTCEcoHeat and CTCEcoZenith i250 is optimised
because the products contain functionality for five basic systems. These are:
Solar "system 1"
Solar "system 2"
Solar "system 3"
Diff thermostat function
Pool
Solar also offers the facility to recharge the drill hole or collect energy for an
extra tank, with or without a solar coil.
*The differential thermostat function can be connected to an existing PCB in
the CTCEcoHeat400/CTCEcoZenithi250, while Solar systems 1, 2, 3 and
Pool require the product to be supplemented with the CTCSolar Control/
Expansion Card accessory.
Explanations of system options
Solar system 1
Charge from solar panels only to the H-tank (H) in the CTCEcoHeat400 or
CTCEcoZenithi250
Solar system 2
Charge from solar panels only to the EcoTank buffer tank +
CTCEcoHeat400/CTCEcoZenithi250.
Solar system 3
Charge from solar panels either to X-Volume or CTCEcoHeat 400/
EcoZenithi250.
Using a diverting valve, the charge is prioritised
either to the H-tank in the EcoHeat/EcoZenithi250
or to the external X-volume
Diff thermostat function
The differential thermostat function is used if you
want to charge your EcoHeat/EcoZenith from an
existing wood-fired boiler, a water-jacketed stove or
another cheap heat source.
The function compares the temperature in the
EcoHeat/EcoZenith and the external heat source.
Charging starts when it is warmer in the external
heat source.
NB: For certain heat sources, e.g. solid fuel boilers,
automatic chargers are recommended, among other
things to counteract condensation in the fire box.
System options, Energyfl ex
Schematic diagram only The installer adds expansion vessels, safety valves, etc., and sizes the system.
G98
G99
B5
G46
B6
B46
Y11
H-tank 05
Schematic diagram for differential thermostat function