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Feel the comfort of the new
CTC EcoHeat 300
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CTC EcoHeat 306
CTC EcoHeat 308
CTC EcoHeat 310
CTC EcoHeat 312
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Color touch screen display (4,3’’)
Up to 2 heating circuits
Wireless room sensors
Remote Internet & SMS control
Clear & easy navigation menus
Simplified operating display
Interactive shortcuts
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We keep our tank design, but we
use new storage principle.
Doubled Hot water capacity.
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Doubled DHW capacity without the
help of the immersion heater.
Priority valve control on DHW –
Allows fast charging of the upper
tank at high temperature
 for quick and secured Hot Water
comfort.
Hot water is loaded and distributed
from the hot upper tank
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Best COP of the market!
Reaching COP of 4.6 at W35/30 - EN14511
Electronic expansion valve control as
standard.
Max return temperature to the cooling
modules is 58 ̊C.
Completely closed module and better
insulation
Max. temperature from comp. up to 67 ̊C.
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Prepared for EcoDesign
Requirement for Eco Design – 1 jan 2013
Cooling module is equipped with A-Class
pumps
-
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Charging pump as standard
Brine pump as option for now
(standard in Inox version)
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Detailed features
CTC EcoHeat 300
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Easy software update via USB in
front of the controller
Step by step: Guided installation
at startup for secured
commissionning
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Tank loading
During
DHW priority
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During
Heating control
Maintenance Made Easy
Safety pressure switch
- 31 bar
High pressure SENSOR
Survey of the compressor work
area and expansion valve control
Schraeder valve
Low pressure sensor
Survey of the compressor working area
and expansion valve control
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Additional heater
Modulating additional immersion heater
Version 400V:
30x 300 W =
9 kW
Version 230V:
20 x 300 W =
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6 kW
Accessories
Wireless room display
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GSM module for EcoHeat 300
• Easy control of the heat pump
• Battery backup
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Remote Access Unit
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Building Management System (BMS)
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cTc family
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System Solution CTC EcoHeat 300.
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System Comparison.
Other system
Temperature variation
Flow in radiator
system
No mixing valve
Alternative DHW /
Heating
CTC EcoHeat v3
CTC EcoHeat 300
NO Temp variation
Flow in radiator
system independent
OK with mixing valve
Parallel DHW /
Heating
No noise in the pioe
system
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Higher indoor comfort
Accurate primary flow temperature gives high indoor comfort.
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CTC EcoHeat 300
Other system
–10
26
0
+10
System CTC EcoHeat 300 Gives You…
• Buffer volume between compressor and
heating system, without noise.
• Accurate temperature to the heating system, higher
comfort.
• Correct flow in the condenser, excellent for the
compressor.
• More hot water.
• Energyflex.
• Flow independent heating system.
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CTC EcoHeat 300 – in Detail…
1. Overview of the control system, tank and refrigeration module
2. Charging of the tank
3. Components
4. Control system
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The product
Standard
- Brine vessel
- Outdoor and room sensor
- Primary flow sensor
- Safety valve 3 bar
- Safety valve 9 bar
- Connection pipes for the cold side
- Current sensors
Accessory kit
- Expansion vessel
- Radiator pump
- Mixing valve
- Brine coupling, (filling-) dim 25 (alt 32)
Other accessories
- Wireless room sensor
- Speed control brine pump
- Internet access
- BMS
- SMS control
- EcoSol
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Accessory
• Brine filling kit
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Display/Control system
- Large, clear touch display i colour - 4.3”
- User friendly menu system focusing on clarity, facilitating the installation
(installation guide)
- Option for 2 wireless room sensors (accessories) – 2 heating zones.
- Prepared for Internet, BMS and SMS
- USB – updating the control system
- Standard communication protocol - ModBus
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Tank Construction
- Improved internal tank construction to increase the
domestic hot water capacity (insulated divider and new
genomströmningsrör).
- New tank charging principle to reduce the need for the
immersion heater and to increase the DHW capacity.
- High charging temperature from the heat pump (up to
67°C) enables a high DHW supply without the
immersion heater.
- Up to 280 l 40°C @ 8l/min, (before: 125 l) without
using the immersion heater. (Summer mode – without
heating).
- General impression – reinforced front
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Tank Charging
Brine out
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Brine in
Charging - top
Charging – lower part
Return - condenser
Conditions – Tank Charging
Charging of the upper tank
The DHW charging starts when the
upper sensor goes below its set point
(factory setting 55 ⁰C), and stops when
the sensor reaches its set point. (factory
setting 60 ⁰C).
The mixing valve closes during the DHW
charging, since it has a max Δ of 30 ⁰C.
This ensures that the cold water return
from the radiators doesn’t inhibit the
DHW from reaching a sufficient
temperature.
Δ T depends on the temperature in the
lower tank.
1
2
1
2
3
3
1. charging starts , tank upper sensor (55)
2. charging stops, tank upper sensor (60)
3. lower tank (primary flow temp.)
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Conditions – Tank Charging
Charging of the lower tank
-The same conditions as for the EcoHeat
3.0, i.e. starts at the primary flow set point
(lower tank sensor) and stops at 5 ⁰C
above.
When charging, the control system
maintains a Δt of 7 ⁰C over the condenser.
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Components Overview
DHW connections
Bivalent mixing valve
Upper part
Insulation (PUR)
Finned coil for domestic hot water
Flow direction valve
Insulated divider
(10 mm)
Immersion
Heater
Condenser and evaporator
(0,3-9 kW)
Lower part
Sound insulation
(Betumen)
Speed control heat carrier pump
Brine pump
Compressor
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Electronic expansion valve
Refrigeration module
- Considerably improved COP – up to 4,6 @ 0/35 (EN 14 511)
- Electronic expansion valve optimizes the refrigeration system performance at each
operating point (thermostatic expansion valve optimized at one operating point).
- Full system surveillance
- Speed controlled charging pump (A class) as a standard feature
- Speed controlled brine pump as an accessory
- Max primary flow from the condenser at DHW charging:
67°C
- Max primary/return over the condenser: 67/58°C
(against lower tank)
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Components – Heat Exchangers
The plate heat exchangers are from SWEP.
The SWEP distribution technology ensures
that the evaporator is optimally used.
A calibrated distribution system in the
evaporator inlet creates pressure drop and
generates turbulence, which improves the
distribution of the refrigerant.
Condenser
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Evaporator
Technical data – Power and COP
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Components – Circulation pumps
Charging pump
- Speed controlled low energy pump
- Wilo Stratos TEC 25/6 (EH306, 308)
- Wilo Stratos TEC 25/7 (EH310,312)
Brine pump
- WiloTOP-S 25/7 (EH306, 308, 310)
- WiloTOP-S 25/10 (312)
EcoDesign 1 Jan 2013 – A-class outside the product
EcoDesign 1 Jan 2015 – A-class in the product
Charging pump
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Brine pump
Thermostatic versus electronic Expansion Valve
Thermostatic expansion valve:
- Optimized within a minor operation area, all other operating points
inside the envelope are “compromises”.
- Can not change its settings for different operation points
Electronic expansion valve:
- Can change its settings for any operating point, and continuously
supervises the refrigeration system. Operates with a pre set value on
the super heating.
 Uses constantly the evaporator to its optimum, in relation to the
operation, which also means that the operational costs are optimized.
 Updating via USB
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Electronic
expansion valve
Components - Compressor
EcoHeat 306
- Mitsubishi AEH 33
- The latest version of Mitsubishi heat pump compressors
- Better performance than Copeland ZH15 (EA105, EP5)
New technology – Hot gas super heating
 Uses suction gas super heating as well as hot gas super heating =>
wider operation area and improved performance
EcoHeat 308, 310, 312
- Copeland ZH 21, 26, 30 => corresponding to EH 7,5, 8,5, 10,5
=> the 300 series has a higher power than the V3
A higher cooling power demands a deeper borehole
A higher COP increases the energy outtake from the borehole
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Components – Sensors and Pressostats
High pressure switch
- 31 bar
High pressure sensor
Supervises the operating area of the compressor and
the expansion valve
Schrader valves
Low pressure sensor
Supervises the operating area of the compressor and
the expansion valve
Suction gas exchanger
- Uses the hot condensate to superheat the suction gas => the evaporator is used for evaporation
only, and not for superheating
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Suction Gas Exchanger
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Display
Main menu
- 4,3 ”
- Touch
If no changes are made, after 10 min, the display
returns to the above position.
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- USB connection - USB updating the
control system
- Standard communication protocol - ModBus
Display
Main menu
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Display
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Display
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Display – Room temperature
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Display – Room temperature
Monday
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6
9
Display – Choice of Hot Water Comfort
35 ⁰C
40 ⁰C
45 ⁰C
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Hot Water Comfort – Weekly Settings
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Advanced Settings
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Advanced Settings
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Advanced Settings
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Display – Information on the Heating System
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Display – Information on the Heating System
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