Technical data
26
CTC EcoZenith i250 
General Information
!
The value by which the temperature is reduced, -Room temp./Prim. flow red., is 
set under Installer/Settings/Radiator system/ 
Factory setting: -2/-3 °C.
8.3.4 Holiday
 Svenska  Nederlands  English  Deutsch
 Suomi  Française  Dansk  Norsk
1 2
1 2
  22,2 ºC  21,2 ºC  58 ºC  -5 ºC
1 2
1 2
1 2
1 2
1 2
T ºC
60
40
20
0
-20
16  20  0  4  8 12
00 - 06  22 - 24
00 - 06  22 - 24
00 - 06  22 - 24
00 - 06  22 - 24
00 - 06  23 - 24
00 - 08   23 - 24
00 - 08   22 - 24
06 - 09  18 - 21
07 - 09  -- - --
08 - 09  -- - --
08 -  --  --  - 21
08 -  --  --  - 21
10 - 12   20 - 23
10 - 12   20 - 23
  Room temp.  DHW  Operation  Installer
CTC EcoZenith  Monday 09:35
Night reduction Holiday
Heating circuit 2 (50)
Heating circuit 1
Room temp.
Start menu
Room temperature settings
Selecting DHW comfort
Heating system data
Installer settings menu
Extra
Hot water 
0.0 hours
On
Temperature
Normal
Weekly schedule
DHW
Operation data system
Status HP upper tank
Tank upper°C    49 (58)
Tank lower°C    42 (45)
Electric power kW    0.0+2.5
Current L1/L2/L3 0.0 0.0 0.0
Diff func. Pump / ºC    On 32
Pool ºC Off 22(20)
Operation data EcoZenith
Stored oper data
Heating circuit
Operation data heating
Installer
Time/Language  Settings  Define system  Service
Software display PCB:  20120205
Software HP PCB:  01234
Installer
Installer
Time 21:34
Date 2012-02-05
Settings
Heating circuit 1
Heating circuit 1
Heating circuit 2
Heat pump
Electric heater
Upper tank
Remote control  None
Communication
Solar panels
Diff thermostat function
Pool
Save settings
Load settings
Load factory settings
Max primary flow°C    55
Min primary flow°C    Off
Heating off, out°C    18
Heating off    120
Inclination°C  50
Adjustment°C  0
Room temp reduced°C  -2
 or
Primary flow reduced°C  -3
>>
Define system
Def heating circuit 1
Heating circuit 1
Heating circuit 2
Heat pump
CTC SMS
Cooling
Solar panels
Diff thermostat function  No
Pool (G50, G51, B50)    No
Heating circuit 1    Yes
Room sensor 1    Yes
Type    Wire
Service
Function test
Function test
Alarm log
Factory settings coded
Quick start compressor.
Software update, USB
Write log to USB
Control current sensors
Re-installation
Heating circuit
Heat pump
Valves
Electric heater
Solar
Diff thermostat function
Pool
Total operation time h:  14196
Max primary flow°C:    51
Consumtion kWh    20
Compressor:
 Total Operation time    1540
Stored oper data
Heat pump
Compressor On
Charge pump  On 47%
Brine pump  On
HP in/out°C  35.5 / 42.3
Current L1  4.0
Night reduction heat circ.
Weekly program  Block  NR
Decrease  Sunday 22:00
Increase  Friday 14:00
Decrease  -------- 00:00
Increase  -------- 00:00
Holiday
Holiday period  3 days
Out  Room1 Prim1  Return Room2  Prim2
Settings language
Night reduction heat circ. 1
Weekly program  Day by day  NR
Monday
Tuesday
Wednesday
Thursday
Friday
Saturday
Sunday
Weekly program  Day by day  DHW
Monday
Tuesday
Wednesday
Thursday
Friday
Saturday
Sunday
Weekly program DHW
You use this option to set the number of days for which 
you want the set night reduction temperature to be 
constantly reduced. For example, if you want to go on 
holiday.
You can apply this setting for up to 300 days.
The period starts from the time you set this parameter 
for.
!
Tip: Start by setting to Economic 
and if you find that you are not 
getting enough hot water, increase 
it to Normal, and so on.
8.4  DHW
Weekly program
You use this to set the DHW comfort level you want and 
extra DHW.
Temperature
You set the values for this option which apply to the 
CTC EcoZenith i250’s normal operation. There are three 
modes: 
Economic – Small hot water requirement. 
(Temperature Tank lower ≥ 35 °C )
Normal – Normal DHW requirement. 
(Temperature Tank lower ≥ 40 °C )
Comfort – Large DHW requirement. 
(Temperature Tank lower ≥ 45 °C )
Extra hot water
Select this option if you want to activate the Extra DHW 
function. When the function is activated (by setting the 
number of hours) the heat pump immediately starts 
to produce extra DHW. You also have the option to 
schedule hot water production for certain times using 
the Weekly program function (recommended).
Setpoint Upper tank 60ºC (Electric boiler extra DHW º)
Setpoint Lower tank = 58ºC
The example above shows that Temporary extra DHW is 
activated (On) for 3.5 hours. 
 Svenska  Nederlands  English  Deutsch
 Suomi  Française  Dansk  Norsk
1 2
1 2
  22,2 ºC  21,2 ºC  58 ºC  -5 ºC
1 2
1 2
1 2
1 2
1 2
T ºC
60
40
20
0
-20
16  20  0  4  8 12
00 - 06  22 - 24
00 - 06  22 - 24
00 - 06  22 - 24
00 - 06  22 - 24
00 - 06  23 - 24
00 - 08   23 - 24
00 - 08   22 - 24
06 - 09  18 - 21
07 - 09  -- - --
08 - 09  -- - --
08 -  --  --  - 21
08 -  --  --  - 21
10 - 12   20 - 23
10 - 12   20 - 23
  Room temp.  DHW  Operation  Installer
CTC EcoZenith  Monday 09:35
Night reduction Holiday
Heating circuit 2 (50)
Heating circuit 1
Room temp.
Start menu
Room temperature settings
Selecting DHW comfort
Heating system data
Installer settings menu
Extra
Hot water 
0.0 hours
On
Temperature
Normal
Weekly schedule
DHW
Operation data system
Status HP upper tank
Tank upper°C    49 (58)
Tank lower°C    42 (45)
Electric power kW    0.0+2.5
Current L1/L2/L3 0.0 0.0 0.0
Diff func. Pump / ºC    On 32
Pool ºC Off 22(20)
Operation data EcoZenith
Stored oper data
Heating circuit
Operation data heating
Installer
Time/Language  Settings  Define system  Service
Software display PCB:  20120205
Software HP PCB:  01234
Installer
Installer
Time 21:34
Date 2012-02-05
Settings
Heating circuit 1
Heating circuit 1
Heating circuit 2
Heat pump
Electric heater
Upper tank
Remote control  None
Communication
Solar panels
Diff thermostat function
Pool
Save settings
Load settings
Load factory settings
Max primary flow°C    55
Min primary flow°C    Off
Heating off, out°C    18
Heating off    120
Inclination°C  50
Adjustment°C  0
Room temp reduced°C  -2
 or
Primary flow reduced°C  -3
>>
Define system
Def heating circuit 1
Heating circuit 1
Heating circuit 2
Heat pump
CTC SMS
Cooling
Solar panels
Diff thermostat function  No
Pool (G50, G51, B50)    No
Heating circuit 1    Yes
Room sensor 1    Yes
Type    Wire
Service
Function test
Function test
Alarm log
Factory settings coded
Quick start compressor.
Software update, USB
Write log to USB
Control current sensors
Re-installation
Heating circuit
Heat pump
Valves
Electric heater
Solar
Diff thermostat function
Pool
Total operation time h:  14196
Max primary flow°C:    51
Consumtion kWh    20
Compressor:
 Total Operation time    1540
Stored oper data
Heat pump
Compressor On
Charge pump  On 47%
Brine pump  On
HP in/out°C  35.5 / 42.3
Current L1  4.0
Night reduction heat circ.
Weekly program  Block  NR
Decrease  Sunday 22:00
Increase  Friday 14:00
Decrease  -------- 00:00
Increase  -------- 00:00
Holiday
Holiday period  3 days
Out  Room1 Prim1  Return Room2  Prim2
Settings language
Night reduction heat circ. 1
Weekly program  Day by day  NR
Monday
Tuesday
Wednesday
Thursday
Friday
Saturday
Sunday
Weekly program  Day by day  DHW
Monday
Tuesday
Wednesday
Thursday
Friday
Saturday
Sunday
Weekly program DHW
 Svenska  Nederlands  English  Deutsch
 Suomi  Française  Dansk  Norsk
1 2
1 2
  22,2 ºC  21,2 ºC  58 ºC  -5 ºC
1 2
1 2
1 2
1 2
1 2
T ºC
60
40
20
0
-20
16  20  0  4  8 12
00 - 06  22 - 24
00 - 06  22 - 24
00 - 06  22 - 24
00 - 06  22 - 24
00 - 06  23 - 24
00 - 08   23 - 24
00 - 08   22 - 24
06 - 09  18 - 21
07 - 09  -- - --
08 - 09  -- - --
08 -  --  --  - 21
08 -  --  --  - 21
10 - 12   20 - 23
10 - 12   20 - 23
  Room temp.  DHW  Operation  Installer
CTC EcoZenith  Monday 09:35
Night reduction Holiday
Heating circuit 2 (50)
Heating circuit 1
Room temp.
Start menu
Room temperature settings
Selecting DHW comfort
Heating system data
Installer settings menu
Extra
Hot water 
0.0 hours
On
Temperature
Normal
Weekly schedule
DHW
Operation data system
Status HP upper tank
Tank upper°C    49 (58)
Tank lower°C    42 (45)
Electric power kW    0.0+2.5
Current L1/L2/L3 0.0 0.0 0.0
Diff func. Pump / ºC    On 32
Pool ºC Off 22(20)
Operation data EcoZenith
Stored oper data
Heating circuit
Operation data heating
Installer
Time/Language  Settings  Define system  Service
Software display PCB:  20120205
Software HP PCB:  01234
Installer
Installer
Time 21:34
Date 2012-02-05
Settings
Heating circuit 1
Heating circuit 1
Heating circuit 2
Heat pump
Electric heater
Upper tank
Remote control  None
Communication
Solar panels
Diff thermostat function
Pool
Save settings
Load settings
Load factory settings
Max primary flow°C    55
Min primary flow°C    Off
Heating off, out°C    18
Heating off    120
Inclination°C  50
Adjustment°C  0
Room temp reduced°C  -2
 or
Primary flow reduced°C  -3
>>
Define system
Def heating circuit 1
Heating circuit 1
Heating circuit 2
Heat pump
CTC SMS
Cooling
Solar panels
Diff thermostat function  No
Pool (G50, G51, B50)    No
Heating circuit 1    Yes
Room sensor 1    Yes
Type    Wire
Service
Function test
Function test
Alarm log
Factory settings coded
Quick start compressor.
Software update, USB
Write log to USB
Control current sensors
Re-installation
Heating circuit
Heat pump
Valves
Electric heater
Solar
Diff thermostat function
Pool
Total operation time h:  14196
Max primary flow°C:    51
Consumtion kWh    20
Compressor:
 Total Operation time    1540
Stored oper data
Heat pump
Compressor On
Charge pump  On 47%
Brine pump  On
HP in/out°C  35.5 / 42.3
Current L1  4.0
Night reduction heat circ.
Weekly program  Block  NR
Decrease  Sunday 22:00
Increase  Friday 14:00
Decrease  -------- 00:00
Increase  -------- 00:00
Holiday
Holiday period  3 days
Out  Room1 Prim1  Return Room2  Prim2
Settings language
Night reduction heat circ. 1
Weekly program  Day by day  NR
Monday
Tuesday
Wednesday
Thursday
Friday
Saturday
Sunday
Weekly program  Day by day  DHW
Monday
Tuesday
Wednesday
Thursday
Friday
Saturday
Sunday
Weekly program DHW
3.5 hours










