Technical data

10
CTC EcoZenith i250
General Information
CTC EcoZenith i250 H CTC EcoZenith i250 L
400V 3N~
kW 15.04 15.04
kW 0 - 15.0
kW 9+6 (3) 9+6 (3)
IPX1
CTC EcoZenith i250 H CTC EcoZenith i250 L
kg 182 167
mm 595x1904x672 595x1654x672
mm 1925 1696
CTC EcoZenith i250 H CTC EcoZenith i250 L
l 223
bar 2,5
°C 110
CTC EcoZenith i250 H CTC EcoZenith i250 L
l 5,7
bar 10
°C 110
Electrical Data
Electrical data
Rated power
Immersion heater (steps of 0,3 kW)
Max immersion heater output
@ fuse size 16 / 20 / 25 A
IP class
Other data
Weight
Width x Height x Depth
Minimum ceiling height
Heating system
Water volume. thermal store (V)
Max. operating pressure. thermal store (PS)
Max. temperature. thermal store (TS)
Pressure drop for mixing valve heating See pressure drop diagram in the Pipe installation chapter
Hot water system
Water volume, hot water coil (V)
Max. operating pressure, hot water coil (PS)
Max. temperature, hot water coil (TS)
Examples of Heating Curves
You can see in the diagram below how the heating curve
changes with different Inclination settings. The gradient of
the curve shows the temperatures that the radiators require
at different outdoor temperatures.
Curve Inclination
The inclination value which is set is the primary flow
temperature when the outside temperature is –15°C.
Primary Flow Temperature
Primary Flow Temperature
Primary Flow Temperature
Primary Flow Temperature
Outside Temperature
Outside Temperature
Outside Temperature
Heating off, out
Heating off, out
Heating off, out
Outside Temperature
Adjustment
The curve can be parallel displaced (adjusted) by the
desired number of degrees to adapt to different systems/
houses.
An example
Inclination 60°C
Adjustment 0°C
In this example, the maximum outgoing primary flow
temperature is set at 55°C.
The minimum permitted primary flow temperature is 27°C
(e.g. summer-time basement heating or the floor circuits in
a bathroom).
Summer-time operation
All properties have internal heat gains (lamps, oven,
personal heat etc.), which means that the heating can be
switched off when the outdoor temperature is lower than
the desired room temperature. The better insulated the
house is, the earlier the heating from the heat pump can be
switched off.
The example shows the product set at the default value of
18°C. This Heating off value can be changed under the
Installer/Settings/Radiator system menu.
When the heat is switched off in this way, the radiator
pump stops and the mixing valve is shut down. The heating
starts up automatically when it is required again.
Inclination 50°C
Adjustment +5°C
Inclination 50°C
Adjustment 0°C