CTC Union EcoPart i425-i435 Pro Manual

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162 105 52-4 2015-11-26
Installation and Maintenance Manual
CTC EcoPart i425-i435 Pro
CTC EcoPart 425-435
IMPORTANT
READ CAREFULLY BEFORE USE
KEEP FOR FUTURE REFERENCE

1. Disconnect the cooling module’s power cable con-
nector and hoses.
2. Attach the two carrying handles to the bottom of the
cooling module.
3. Unscrew the cooling module’s screws. 4. Pull the cooling module by first lifting the front edge
slightly with the carrying handles.
5. Lift the cooling module using the carrying handles and
shoulder straps.
6. Lift the cooling module into the product using the
carrying handles and shoulder straps. Remove the
carrying handles and reconnect the power cable,
hoses and screws.
Removing the cooling module

Installation and Maintenance Manual
CTC EcoPart i425-i435 Pro
CTC EcoPart 425-435
162 105 52-4 2015-11-26

4
CTC EcoPart i425-i435 Pro
No liability is accepted for any misprints. We reserve the right to make design changes.
For your own reference
Fill in the information below. It may come in useful if anything should happen.
Product: Serial number:
Installer: Name:
Date: Tel. no.:
Electrical installer: Name:
Date: Tel. no.:
The 12-digit serial number
is found on a sticker affixed
to the top cover of the
product.
Table of Contents
GENERAL INFORMATION
Check list ____________________________________________________________________ 6
Important to remember! _____________________________________________ 7
Safety Instructions _____________________________________________________ 7
1. Introduction__________________________________________________________ 8
2. Technical data____________________________________________________ 10
2.1 Table 400 V 3N~ ___________________________________________ 10
2.2 Table 230 V 1N~____________________________________________ 12
2.3 Component location_______________________________________ 13
2.4 Dimensional drawing ______________________________________ 14
2.5 Refrigerant system_________________________________________ 15
2.6 Operating range ____________________________________________ 15
3. Installation__________________________________________________________ 16
3.1 Delivery includes ___________________________________________ 16
3.2 Connection___________________________________________________ 17
3.3 Heat medium side__________________________________________ 18
3.4 Circulation pumps, heat medium side _______________ 19
3.4.1 Yonos Para pump curve ______________________________ 19
3.4.2 UPMGEO pump curve ________________________________ 19
3.5 Brine system_________________________________________________ 20
3.6 Brine pump___________________________________________________ 24
4. Electrical installation _________________________________________ 25
4.1 Alarm output_________________________________________________ 25
4.2 Groundwater heating______________________________________ 25
5. Connecting the control system_________________________ 26
5.1 CTC EcoPart i425-i435 Pro_____________________________ 26
5.2 CTC EcoPart 425-435____________________________________ 27
5.3 Series connection of heat pumps _____________________ 28
5.3.1 Terminated position ____________________________________ 28
5.3.2 Shielded communication _____________________________ 29
5.3.3 Example of series connection_______________________ 30
5.4 Power supply and communication 400V 3N~_____ 32
5.5 Power supply and communication 230V 1N~_____ 33
5.6 Wiring diagram CTC i425-i435 Pro 400 V 3N~ ___ 34
5.7 Cooling module 400V 3N~ ______________________________ 36
5.8 Wiring diagram CTC i425-i430 Pro 230 V 1N~ ___ 38
5.9 Cooling module 230V 1N~ ______________________________ 40
6. First start ___________________________________________________________ 41
7. Operation and Maintenance______________________________ 42
7.1 Periodic maintenance_____________________________________ 42
7.2 Shut-down ___________________________________________________ 42
7.3 Service position_____________________________________________ 42
8. Troubleshooting/appropriate measures ___________ 43
8.1 Air problems _________________________________________________ 43
8.2 Alarms _________________________________________________________ 43
8.3 Noise/vibrations_____________________________________________ 43
8.4 CTC Basic Display _________________________________________ 43
8.5 Safety risk ____________________________________________________ 43
8.6 Display “Lockout” __________________________________________ 43
Declaration of Conformity________________________________________ 44

5
CTC EcoPart i425-i435 Pro
General Information
General Information
Congratulations on buying your new product
The complete heat pump for rock,
ground or lake
The CTC EcoPart i425-i435 is a heat pump which takes heat from rock,
ground or lake and supplies it to the existing heating system in the house.
The heat pump is intended for commercial use and can be connected to the
property’s heating and hot water system according to the system example in
CTCEcoLogicPro.
CTC EcoPart has been designed to operate with high efficiency and low
noise levels.
!This manual does not describe the controls for
CTCEcoLogicPro or CTCBasicDisplay; we refer to
the relevant manuals for these products.

6
CTC EcoPart i425-i435 Pro
General Information
Check list
The check list must be completed by the installer.
• If service is needed, you may be required to provide this document.
• Installation must always be in accordance with the installation and maintenance instructions.
• Installation must always be carried out by an MCS accredited installer.
Following installation, the unit must be inspected and functional checks performed as
indicated below:
Pipe installation
Heat pump filled, positioned and adjusted in the correct manner according to the instructions.
Heat pump positioned so that it can be serviced.
Capacity of the charge/heating circ pump (depending on type of system) for the flow required.
Open radiator valves (depending on type of system) and other relevant valves.
Tightness test
Bleed the system
Check proper operation of the requisite safety valves.
Requisite waste pipes connected to the floor drain (depending on type of system).
Electrical installation
Power switch
Correct tight wiring
Requisite sensors fitted
Accessories
Information for the customer (adapted to current installation)
Start-up with customer/installer
Menus/controls for selected system
Installation and maintenance manual supplied to the customer
Checks and filling, heating circuit
Information on fine adjustments
Alarm information
Functional test of safety valves fitted
Information on procedures for fault registration
______________________________________ ______________________________________
Date / Customer Date / Installer

7
CTC EcoPart i425-i435 Pro
General Information
Important to remember!
Check the following points in particular at the time of delivery and installation:
• The product must be transported and stored in an upright position.
• Remove the packaging and check before installation that the product
has not been damaged in transit. Report any transport damage to the
carrier.
• Place the product on a solid foundation, preferably made of concrete.
If the product needs to be placed on a soft carpet, base plates
must be placed under the adjustable feet.
• Remember to leave a service area of at least 1 m in front of the
product.
• The product must not be placed below floor level either.
• Avoid placing the product in rooms where the walls are of lightweight
design, as people in the adjoining room may be disturbed by noise and
vibrations.
• Ensure that pipes used between the heat pump and the heating circuit
are of adequate dimensions.
Safety Instructions
The following safety instructions must be observed when handling, installing
and using the heat pump:
• Close the safety switch before doing any work on the product.
• The product must not be flushed with water.
• When handling the product with a hoist ring or similar device, make
sure that the lifting equipment, eyebolts, etc. are not damaged. Never
stand under the hoisted product.
• Never jeopardise safety by removing bolted covers, hoods or similar.
• Never jeopardise safety by deactivating safety equipment.
• Any work done on the product’s cooling system should be done by a
competent F Gas engineer.
• This product is intended for indoor installation only.
• This product is intended for commercial use.
!If these instructions are not followed when installing, operating and maintaining
the system, Enertech’s commitment under the applicable warranty terms is not
binding.
No liability is accepted for any misprints. We reserve the right to make design changes.
This appliance is not intended for use by persons ( including children ) with
reduced physical, sensory or mental capabilities, or lack of experience
and knowledge, unless they have been given supervision or instruction
concerning use of the appliance by a person responsible for their safety.
Children should be supervised to ensure that they do not play with the
appliance.

8
CTC EcoPart i425-i435 Pro
General Information
CTC EcoPart 425 &
CTCEcoParti425Pro
CTC EcoPart 430 &
CTCEcoParti430Pro
CTC EcoPart 435 &
CTCEcoParti435Pro
12 kW8 kW 17 kW
17 kW 17 kW 17 kW
1. Introduction
This heat pump is available in many different versions depending on how you
intend to control it.
• The CTC EcoPart i425-i435 Pro has an integrated CTC EcoLogic Pro
unit that controls the heat pumps and the property’s heating system.
• The CTC EcoPart 425-435 has two CTC Basic Display units as
standard instead.
The heat pump consists of two heat pump modules on top of each other.
The structure of the different sizes is shown below.
3 x 400 V 3N~

9
CTC EcoPart i425-i435 Pro
General Information
1 x 230 V 1N~
CTC EcoPart 425 &
CTCEcoParti425Pro
CTC EcoPart 430 &
CTCEcoParti430Pro
14 kW10 kW
14 kW 14 kW

10
CTC EcoPart i425-i435 Pro
General Information
2. Technical data
2.1 Table 400 V 3N~
400V 3N~
CTC EcoPart i425 Pro CTC EcoPart i430 Pro
KM417EP 2xLEP KM408EP 2xLEP KM417EP 2xLEP KM412EP 2xLEP
CTC EcoLogic Pro CTC EcoLogic Pro
kW 15.4 17.0
A 22.2 24.6
IPX1 IPX1
A 16.7 19.7
A 11.5 5.2 11.5 8.2
CTC EcoPart 425 CTC EcoPart 430
KM417EP 2xLEP KM408EP 2xLEP KM417EP 2xLEP KM412EP 2xLEP
CTC Basic display CTC Basic display
kW 10.8 12.4
A 15.6 17.9
IPX1 IPX1
A 16.7 19.7
A 11.5 5.2 11.5 8.2
A 32.0 17.7 32.0 23.5
400V 3N~
kW 20.89 23.93
kW 14.05 6.84 14.05 9.88
COP 1) @ -5/45 3.19 3.34 3.19 3.30
kW 24.43 | 24.01 | 23.42 27.99 | 27.38 | 26.84
kW 16.24 | 16.14 |15.87 8.19 | 7.87 | 7.55 16.24 | 16.14 | 15.87 11.75 | 11.24 | 10.97
COP 1) @ 0/35 0/45 0/55 4.36 | 3.61 | 3.07 4.58 | 3.64 | 2.99 4.36 | 3.61 | 3.07 4.60 | 3.66 | 2.96
kW 28.69 | 27.47 | 26.81 32.78 | 31.37 | 30.73
kW 19.25 | 18.42 | 18.16 9.44 | 9.05 | 8.65 19.25 | 18.42 | 18.16 13.53 | 12.95 | 12.57
COP 1) @ 5/35 5/45 5/55 5.02 | 4.05 | 3.38 5.02 | 4.04 | 3.30 5.02 | 4.05 | 3.38 5.11 | 4.11 | 3.35
400V 3N~
l 4.07 2.90 4.07 3.40
ºC 5 / 20
bar 0.2 / 3.0 0.2 / 3.0
l/s 0.63 0.31 0.63 0.44
l/s 1.05 0.51 1.05 0.73
8.9 5.8 8.9 7.2
400V 3N~
l 2.7 1.9 2.7 2.3
ton 4.790 3.371 4.790 4.080
Polyolester (POE)
MPa 3.1 (31 bar)
dB(A) 58.5 58.5
kg 334 354
mm 596 x 1760 x 680
400V 3N~
ºC 110
l/s 0.40 0.20 0.40 0.28
5.9 (6 kPa) 4.1 (3 kPa) 5.9 (6 kPa) 5.5 (3.5 kPa)
l/s 0.81 0.39 0.81 0.56
LEP (Low Energy Pump)
Electrical data
Name
Type
Operating system
Rated power
Rated current
IP class
Max. operating current Compressors
Max. operating current Compressor
Name
Type
Operating system
Rated power
Rated current
IP class
Max. operating current Compressors
Max. operating current Compressor
Max starting current
Operational data for heat pump
Output from compressor 1) @ -5/45
Output from compressor 1) @ -5/45
Output from compressor 1) @ 0/35 0/45 0/55
Output from compressor 1) @ 0/35 0/45 0/55
Output from compressor 1) @ 5/35 5/45 5/55
Output from compressor 1) @ 5/35 5/45 5/55
1) EN14511:2007, inclusive circulation pumps
Brine system
Water volume (V)
Brine system min/max temp. (TS)
Brine system min/max pressure (PS)
Brine system min flow ∆t = 5 K
Brine system nominal flow ∆t = 3 K
Kvs value ∆t = 3 K at nominal flow
Brine system pump Class A circulation pump (LEP)
Pump capacity See diagram in the Pipe installation chapter
Other data
Refrigerant quantity (R407C, fluorinated
greenhouse gases GWP 1774)
CO2equivalent
Compressor oil
Pressure switch cut-off HT
Sound power EN 12102 +/-2 dB(A)
Weight net
Width x Height x Depth
Heating system
Max temperature heating medium (TS)
Heating system min flow 2)
Kvs value ∆t = 10 K, at min flow
Heating system nominal flow 3)
Heating medium pump
2) ∆t = 10 K och 0/35 °C heat pump operation.
3) ∆t = 5 K och 0/35 °C heat pump operation.
No annual leakage control of the refrigerant is required

11
CTC EcoPart i425-i435 Pro
General Information
400V 3N~
CTC EcoPart i435 Pro
KM417EP 2xLEP KM417EP 2xLEP
CTC EcoLogic Pro
kW 19.4
A 28.0
IPX1
A 23.0
A 11.5 11.5
CTC EcoPart 435
KM417EP 2xLEP KM417EP 2xLEP
CTC Basic display
kW 14.8
A 21.4
IPX1
A 23.0
A 11.5 11.5
A 32.0 32.0
400V 3N~
kW 28.10
kW 14.05 14.05
COP 1) @ -5/45 3.19 3.19
kW 32.48 | 32.28 | 31.74
kW 16.24 | 16.14 |15.87 16.24 | 16.14 |15.87
COP 1) @ 0/35 0/45 0/55 4.36 | 3.61 | 3.07 4.36 | 3.61 | 3.07
kW 38.50 | 36.84 | 36.32
kW 19.25 | 18.42 | 18.16 19.25 | 18.42 | 18.16
COP 1) @ 5/35 5/45 5/55 5.02 | 4.05 | 3.38 5.02 | 4.05 | 3.38
400V 3N~
l 4.07 4.07
ºC 5 / 20
bar 0.2 / 3.0
l/s 0.63 0.63
l/s 1.05 1.05
8.9 8.9
400V 3N~
l 2,7 2,7
ton 4.790 4.790
Polyolester (POE)
MPa 3.1 (31 bar)
dB(A) 58.5
kg 359
mm 596 x 1760 x 680
400V 3N~
ºC 110
l/s 0.40 0.40
5.9 (6 kPa) 5.9 (6 kPa)
l/s 0.81 0.81
LEP (Low Energy Pump)
Electrical data
Name
Type
Operating system
Rated power
Rated current
IP class
Max. operating current Compressors
Max. operating current Compressor
Name
Type
Operating system
Rated power
Rated current
IP class
Max. operating current Compressors
Max. operating current Compressor
Max starting current
Operational data for heat pump
Output from compressor 1) @ -5/45
Output from compressor 1) @ -5/45
Output from compressor 1) @ 0/35 0/45 0/55
Output from compressor 1) @ 0/35 0/45 0/55
Output from compressor 1) @ 5/35 5/45 5/55
Output from compressor 1) @ 5/35 5/45 5/55
1) EN14511:2007, inclusive circulation pumps
Brine system
Water volume (V)
Brine system min/max temp. (TS)
Brine system min/max pressure (PS)
Brine system min flow ∆t = 5 K
Brine system nominal flow ∆t = 3 K
Kvs value ∆t = 3 K at nominal flow
Brine system pump Class A circulation pump (LEP)
Pump capacity See diagram in the Pipe installation chapter
Other data
Refrigerant quantity (R407C, fluorinated
greenhouse gases GWP 1774)
CO2equivalent
Compressor oil
Pressure switch cut-off HT
Sound power EN 12102 +/-2 dB(A)
Weight net
Width x Height x Depth
Heating system
Max temperature heating medium (TS)
Heating system min flow 2)
Kvs value ∆t = 10 K, at min flow
Heating system nominal flow 3)
Heating medium pump
2) ∆t = 10 K och 0/35 °C heat pump operation.
3) ∆t = 5 K och 0/35 °C heat pump operation.
No annual leakage control of the refrigerant is required

12
CTC EcoPart i425-i435 Pro
General Information
2.2 Table 230 V 1N~
230V 1N~
CTC EcoPart i425 Pro CTC EcoPart i430 Pro
KM414EP 2xLEP KM410EP 2xLEP KM14EP 2xLEP KM414EP 2xLEP
CTC EcoLogic Pro CTC EcoLogic Pro
kW 15.3 17.2
A 33.5 33.5 38.0 38.0
IPX1 IPX1
A 47.7 54.2
A 27.1 20.6 27.1 27.1
CTC EcoPart 425 CTC EcoPart 430
KM414EP 2xLEP KM410EP 2xLEP KM414EP 2xLEP KM414EP 2xLEP
CTC Basic display CTC Basic display
kW 10.7 12.6
A 24.0 24.0 28.0 28.0
IPX1 IPX1
A 47.7 54.2
A 27.1 20.6 27.1 27.1
A 30.0 30.0 30.0 30.0
230V 1N~
kW 20.42 24.18
kW 12.09 8.33 12.09 12.09
COP 1) @ -5/45 3.24 3.30 3.24 3.24
kW 24.44 | 24.48 | 22.68 28.94 | 27.86 | 26.80
kW 14.47 | 13.93 |13.40 9.97 | 9.55 | 9.28 14.47 | 13.93 |13.40 14.47 | 13.93 |13.40
COP 1) @ 0/35 0/45 0/55 4.54 | 3.64 | 2.95 4.60 | 3.68 | 2.98 4.54 | 3.64 | 2.95 4.54 | 3.64 | 2.95
kW 27.90 | 26.97 | 25.86 32.96 | 31.96 | 30.56
kW 16.48 | 15.98 | 15.28 11.42 | 10.99 | 10.58 16.48 | 15.98 | 15.28 16.48 | 15.98 | 15.28
COP 1) @ 5/35 5/45 5/55 5.13 | 4.11 | 3.28 5.20 | 4.16 | 3.28 5.13 | 4.11 | 3.28 5.13 | 4.11 | 3.28
230V 1N~
l 4.07 2.90 4.07 4.07
ºC -5 / 20
bar 0.2 / 3.0 0.2 / 3.0
l/s 0.53 0.38 0.53 0.53
l/s 0.88 0.64 0.88 0.88
8.7 8.1 8.7 8.7
230V 1N~
l 2.7 1.9 2.7 2.7
4.790 3.371 4.790 4.790
Polyolester (POE)
MPa 3.1 (31 bar)
dB(A) 45.6 45.4
kg 334 354
mm 596 x 1760 x 680
230V 1N~
ºC 110
l/s 0.34 0.24 0.34 0.34
8.6 4.3 8.6 8.6
l/s 0.68 0.48 0.68 0.68
LEP (Low Energy Pump)
1-Fas
Electrical data
Name
Type
Operating system
Rated power
Rated current
IP class
Max. operating current Compressors
Max. operating current Compressor
Name
Type
Operating system
Rated power
Rated current
IP class
Max. operating current Compressors
Max. operating current Compressor
Max starting current
Operational data for heat pump
Output from compressor 1) @ -5/45
Output from compressor 1) @ -5/45
Output from compressor 1) @ 0/35 0/45 0/55
Output from compressor 1) @ 0/35 0/45 0/55
Output from compressor 1) @ 5/35 5/45 5/55
Output from compressor 1) @ 5/35 5/45 5/55
1) EN14511:2007, inclusive circulation pumps
Brine system
Water volume (V)
Brine system min/max temp. (TS)
Brine system min/max pressure (PS)
Brine system min flow ∆t = 5 K
Brine system nominal flow ∆t = 3 K
Kvs value ∆t = 3 K at nominal flow
Brine system pump Class A circulation pump (LEP)
Pump capacity See diagram in the Pipe installation chapter
Other data
Refrigerant quantity (R407C, fluorinated
greenhouse gases GWP 1774)
CO2equivalent
Compressor oil
Pressure switch cut-off HT
Sound power EN 12102 +/-2 dB(A)
Weight net
Width x Height x Depth
Heating system
Max temperature heating medium (TS)
Heating system min flow 2)
Kvs value ∆t = 10 K, at min flow
Heating system nominal flow 3)
Heating medium pump
2) ∆t = 10 K och 0/35 °C heat pump operation.
3) ∆t = 5 K och 0/35 °C heat pump operation.
1-Fas
No annual leakage control of the refrigerant is required

13
CTC EcoPart i425-i435 Pro
General Information
1. Conduit for mains cable (concealed)
2. Terminal board
3. Condenser
4. Evaporator
5. High pressure switch
6. Compressor
7. Hot gas sensor
8. Service socket
9. Low energy heat medium pump
10. Condenser sensor in
11. Drain valve warm side/Water
12. Conduit for communication (concealed)
13. CTC Basic Display
(only CTC EcoPart standard version)
14. High pressure sensor
15. Drying filter
16. Low energy brine pump
17. Low pressure sensor
18. Brine sensor out
19. Expansion valve
20. Drain valve cold side/Brine
21. Condenser sensor out
22. Brine sensor in
23. Heat medium in Ø28 (to HP)
24. Heat medium out Ø28 (from HP)
25. Brine out Ø28 mm (to rock)
26. Brine in Ø28 mm (from rock)
27. Adjustable feet
2.3 Component location
5
6
7
8
9
11
10
15
14
16
17
13
19
18
20
22
21
4
3
2
26252423
112
27

14
CTC EcoPart i425-i435 Pro
General Information
2.4 Dimensional drawing
1760
630
1330
70
80
110
80
1330
620
110
165
80
80
596
80
80
110
80
680
!Remember to leave a service area of at least 1 m in
front of the product.

15
CTC EcoPart i425-i435 Pro
General Information
1 3 24
5
8
6
7
9 10 11
12 13 1514
16
17
1. Brine (heat source)
2. Water
3. Evaporator
4. Condenser
5. Compressor
6. Expansion valve (electronic)
7. Drying filter
8. Refrigerant exchanger
9. Low pressure sensor
10. High pressure sensor
11. High pressure switch
12. Temperature suction gas
13. Temperature hot gas discharge
14. Temperature brine
15. Temperature water out
16. Temperature water in
17. Control expansion valve
2.5 Refrigerant system
The schematic diagram shows the refrigerant system for each integrated
heat pump module.
2.6 Operating range
CTC EcoPart’s pressure-controlled operations monitoring means that the
brine temperature (B) and heat medium temperature (H) can automatically be
increased where this is possible.
Operating condition: B temp/H temp °C
1 -5 / 25
2 20 / 25
3 -5 / 61
4 20 / 64
Operating limits as per the table above are defined in accordance with EN 14511-4.

16
CTC EcoPart i425-i435 Pro
General Information
3. Installation
This chapter is aimed at anyone responsible for one or more of the
installations required to ensure that the product works the way the property
owner wants.
Take your time going through functions and settings with the property owner
and answer any questions. Both you and the heat pump benefit from a user
who has completely understood how the system operates and should be
maintained.
The installation must be carried out in accordance with current standards
and regulations. Refer to MIS 3005 and associated building regs Part L, F
& G. The product must be connected to an expansion vessel in an open or
closed system. Do not forget to flush the radiator system clean before
connection. Apply all the installation settings based on the description in the
chapter on “First start”.
The heat pump operates with a primary flow/return temperature across the
condenser of up to 65/58°C.
Transportation
Transport the unit to the installation site before removing the packaging.
Handle the product in the following manner:
• Forklift
• Lifting band around the pallet. NB: Can only be used with the
packaging on.
Unpacking
Unpack the heat pump when it is placed next to its installation site. Check
that the product has not been damaged in transit. Report any transport
damage to the carrier. Also check that the delivery is complete according to
the list below.
3.1 Delivery includes
CTC EcoPart i425-i435 Pro (with CTC EcoLogic Pro Display):
• 1 x Safety valve ½" 3 bar
• 1 x Room sensor
• 3 x 22K sensor L=2500 mm
• 1 x Outdoor sensor
• 4 x Non-return valve 1¼"
• 4 x Dirt filter 1¼"
• 4 x Rubber grommet D=60
• 4 x Edge moulding 186 mm
• 2 x Edge moulding 700 mm
• CTC EcoLogic PRO/Family
CTC EcoPart 425-435 (with two CTC Basic Display units):
• 1 x Safety valve ½" 3 bar
• 4 x Non-return valve 1¼"
• 4 x Dirt filter 1¼"
• 4 x Rubber grommet D=60
• 4 x Edge moulding 186 mm
• 2 x Edge moulding 700 mm
• CTC Basic Display manual
!The product must
be transported and
stored in an upright
position.

17
CTC EcoPart i425-i435 Pro
General Information
!If a cooling module is connected on the side, the
opening must be lined with the edge moulding
provided to prevent abrasion against the hose.
3.2 Connection
Connection can be made to the right, left or top or rear of the heat pump.
Cut away the cover plate on the side where the hoses are to be connected.
When the opening has been made through the cover plate, carry out the
installation as follows:
1. In order to protect the hoses, fasten the protective edging provided
around the edge of the opening in the insulation plate. Adjust the length
of the protective edging to suit the opening as required.
2. Pass the hoses through the opening in the side cover plates and
connect them. Ensure that the insulation covers all parts of the brine
connection to prevent ice and condensation forming.
3. Then install the collector system.
You can also connect the primary flow on one side and the return on the
other. See the chapter on Measurement details for measurements and
dimensions. The pipe between the heat pump and brine loop should not be
less than Ø35 mm in dimension.

18
CTC EcoPart i425-i435 Pro
General Information
!It is very important that
the branch pipes are
the same design so
that as equal a pressure
drop as possible is
achieved in both the
sets of pipes (pipe
dimensions, bends,
etc.).
Dirt filter
Control valve
Non-return valve
Shut-off valve
Branch pipe min.
Ø35 mm
Connection point Ø28 mm
Branch pipe,
primary
Collecting pipe,
return
Heat pump 1
Heat pump 2
Primary flow, heat medium side
Primary flow, heat medium side
Return flow, heat medium side
19
19
20
20
3.3 Heat medium side
Connect the heat pump with a dimension of at least Ø35 mm so it can then
be joined to a collecting pipe. The non-return valve and dirt filter are 1¼".
The dimension of the collecting pipe depends on the installation.
Route the pipes so that no other highest point is present where air can
collect and obstruct circulation. If however this cannot be done, provide this
highest point with an automatic bleeder.
NOTE! Only 1 heat pump/ cooling module are to be connected to the
accessory Mixing valve.
Return flow, heat medium side

19
CTC EcoPart i425-i435 Pro
General Information
3.4 Circulation pumps, heat medium side
The heat pump is supplied with two LEPs (Low Energy Pump), which are low
energy charge pumps installed at the factory.
3.4.1 Yonos Para pump curve
3.4.2 UPMGEO pump curve
Datasheet Yonos PARA RS ../7.0 PWM1 WILO Intec 08.2012
Dimensions
Hydraulic operational area
Tolerances of each curve according to EN 1151-1:2006
Heat medium pump 8 kW Yonos Para PWM 7.0 Item no 586396 303
Heat medium pump 10-12 kW Yonos Para PWM 7.5 Item no 586396 302
Heat medium pump 14-17 KW UPMGEO 25-85 130 Item no 586396 301

20
CTC EcoPart i425-i435 Pro
General Information
3.5 Brine system
The brine system, i.e. the ground collector loop, must be assembled and
connected by a qualified tradesman in accordance with current regulations
and design guidelines.
Extreme care must be taken to ensure that no dirt gets on the collector
hoses, which must be washed clean before being connected. The protective
caps must remain in place at all times while work is in progress.
The temperature in the brine system can go below 0°C. This is why it is
important not to use any water-based lubricant etc. during installation. It is
also important that all the components are insulated against condensation to
prevent the build-up of ice.
!We recommend
that you follow
the installation
instructions from
the local Heat Pump
Association.
Dirt filter
Control valve
Non-return valve
Shut-off valve
Branch pipe min.
Ø35 mm
Connection point
Ø28 mm
Collecting pipe,
brine out
Collecting pipe,
return
Brine out
Brine out
Return, brine
Return, brine
18
18
17
17
Exp-vessel
!It is very important that
the branch pipes are
the same design so
that as equal a pressure
drop as possible is
achieved in both the
sets of pipes (pipe
dimensions, bends,
etc.).
Heat pump 1
Heat pump 2