CTC Union EcoPart 600M Instruction Manual

Providing sustainable energy solutions worldwide
Installation and Maintenance
CTC EcoPart 600M
Modulating ground source heat pump
Model 612M / 616M
400 V 3N~
IMPORTANT
READ CAREFULLY BEFORE USE
KEEP FOR FUTURE REFERENCE
162 305 09-2 14/08/2019

!
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. Fold out the front cable harness and loosen the flat
pin on the red EMC cable.
5. Pull the cooling module by first lifting the front edge
slightly with the carrying handles.
6. Lift the cooling module using the carrying handles and
shoulder straps.
7. 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.
8. Before the cooling module is tightened into position,
ensure the EMC cable is affixed.
Removing the cooling module
• Any work done on the product’s cooling system should be done by authorised personnel only.
• Close the safety switch before doing any work on the product.

Installation and Maintenance
CTC EcoPart 600M
Modell 612M / 616M
400 V 3N~
162 305 09-2 14/08/2019

4CTC EcoPart 600M
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.:
When contacting CTC, always mention the following:
• Serial number
• Model/Size
• the fault message shown in the display
• Your telephone number
Checklist _______________________________________________________________________ 7
1. Important to remember! _______________________________________ 8
1.1 Transportation____________________________________________________8
1.2 Positioning ________________________________________________________8
1.3 Recycling __________________________________________________________8
1.4 After commissioning___________________________________________8
2. Connection alternative CTCEcoPart600M _______ 9
2.1 General_____________________________________________________________9
3. Technical data _____________________________________________________ 10
3.1 Table CTC EcoPart 612M _________________________________ 10
3.2 Table CTC EcoPart 616M _________________________________ 11
3.3 Component location cooling module __________________12
3.4 Dimensions diagram ________________________________________13
3.5 Refrigerant system ___________________________________________14
3.6 Delivery includes: _____________________________________________14
4. Installation____________________________________________________________ 15
4.1 Connection of the heat medium side __________________ 15
4.1.1 Circulation Pumps (Charging pumps) (G11) _____ 15
4.1.2 Pump diagram EcoPart 600M________________________15
5. Connecting the cold carrier system (brine sys-
tem)_______________________________________________________________________ 17
5.1 Connections____________________________________________________ 17
5.2 Brine system schematic diagram _______________________18
5.1.1 Valves _________________________________________________________ 18
5.1.2 Insulation against condensation _____________________18
5.1.3 Filling and venting _________________________________________ 19
5.1.4 Pressure/level switch ____________________________________ 19
5.1.5 Post-installation check on brine system __________19
5.1.6 Level vessel/Expansion vessel (CTC EcoPart
612M)_____________________________________________________________19
5.1.7 Filling kit with dirt filter ___________________________________ 19
5.1.8 Brine ___________________________________________________________20
5.1.9 Air pockets __________________________________________________20
5.1.10 Checking brine difference ______________________________20
5.3 Brine pump (G20)_____________________________________________ 20
6. Electrical installation___________________________________________ 21
6.1 Electric installation 400 V 3N~ ___________________________ 21
6.1.1 Omnipolar safety switch ________________________________ 21
6.1.2 Alarm output ________________________________________________21
7. Communication connection_______________________________ 22
7.1 Alternative 1 - Connection of
one heat pump ______22
7.2 Option 2 – Series connection of heat pumps_______ 23
7.3 Connecting the control system __________________________ 24
7.2.1 Define number of heat pumps________________________ 24
7.2.2 Numbering CTC EcoPart600M______________________24
7.4 Wiring diagrams_______________________________________________26
7.4.1 Cooling module (A3) _____________________________________26
7.4.2 Cooling module (A4) _____________________________________28
7.4.3 Connection box____________________________________________29
7.5 Parts list__________________________________________________________ 30
7.6 Resistances for sensors____________________________________31
8. First start _____________________________________________________________ 32
9. Operation and Maintenance ______________________________ 32
9.1 Periodic maintenance _______________________________________32
9.2 Operation stop_________________________________________________ 32
10. Troubleshooting/appropriate measures ___________ 33
10.1 Air problems____________________________________________________33
10.2 Alarms ____________________________________________________________33
Table of contents

5CTC EcoPart 600M
Safety instructions
Turn off the power with an omnipolar switch before doing any work on the product.
The product must be connected to protective earth.
The product is classified as IPX1. The product must not be rinsed with water.
When handling the product with a hoist ring or similar device, make sure that the
lifting equipment, eyebolts and other parts are not damaged. Never stand under the
hoisted product.
Never jeopardise safety by removing bolted covers, hoods or similar.
Any work on the product’s cooling system should be carried out by authorised
personnel only.
The product’s electrical systems should only be installed and serviced by a qualified
electrician.
-If the supply cord is damaged, it must be replaced by the manufacturer, its service
agent or similarly qualified persons in order to avoid a hazard.
Safety valve check:
-Safety valve for boiler/system to be checked regularly.
The product must not be started if it is not filled with water; instructions are in the
“Pipe installation” section.
This device can be used by children from the age of eight years and above and by
people with reduced physical, sensory or mental ability or lack of experience or
knowledge if they have been taught, either with supervision or with the instructions
provided, how to use the device safely and understand the risks involved. Children
should not play with the device. Cleaning and maintenance should not be carried
out by children without supervision.
If these instructions are not followed when installing, operating and maintaining the
system, Enertech’s commitment under the applicable warranty terms is not binding.

6CTC EcoPart 600M
Congratulations on buying your new product
The complete heat pump for rock, ground or lake
The CTCEcoPart600M is a modulating heat pump which takes heat from
bedrock, ground or watercourses, and delivers it to the house’s existing
heating system.
The heat pump can be connected to the CTC EcoZenith i550 Pro or to the
existing heating system via the CTC EcoLogic control system
CTC EcoPart 600M has been designed to operate with high efficiency and
low noise levels.
Save this manual containing the installation and maintenance instructions.
If it is looked after properly, you will be able to enjoy the use of your CTC
EcoPart 600M for many years. This manual will provide all the information
you will need.
CTC EcoPart 600M is available in two versions: CTC EcoPart 612M and
CTC EcoPart 616M.

7CTC EcoPart 600M
Checklist
The checklist must always be completed by the installation engineer
• If service is needed, you may be required to provide this document.
• Installation must always be carried out according to the installation and maintenance instructions
• Installation must always be carried out in a professional manner
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.
The heat pump is positioned so that it can be serviced
Capacity of the charge/radiator 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
Customer information (adapted to the relevant installation)
Start-up with customer/installer
Menus/controls for selected system
Installation and maintenance manual supplied to the customer
Check 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

8CTC EcoPart 600M
1. Important to
remember!
Check the following in particular on delivery and installation:
1.1 Transportation
• Transport the heat pump to the installation location before removing the
packaging. Move the product using one of the following means:
- Fork-lift truck
- Lifting strap around the pallet. NB: Can only be used with the packaging on.
• The heat pump must be transported and stored upright.
1.2 Positioning
• 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 concrete.
If the heat pump needs to be placed on a soft carpet, base plates
must be placed under the adjustable feet.
• Remember to leave an access and service area of at least 1 metre in
front of the heat pump.
• The heat pump must not be placed below floor level.
• Avoid placing the heat pump in rooms where the walls are of lightweight
design, as people in the adjoining room may be disturbed by the
compressor and vibrations.
1.3 Recycling
• The packaging must be deposited at a recycling station or with the
installation engineer for correct waste management.
• Obsolete products must be disposed of correctly and transported to a
waste station or distributor/retailer offering this service.
Disposal of the product as household waste is not permitted.
• It is very important that the product’s refrigerant, compressor oil and
electric/electronic components are disposed of correctly.
1.4 After commissioning
• The installation engineer advises the property owner on the design and
servicing of the system.
• The installation engineer fills in a checklist and contact information – the
customer and installation engineer sign the list, which the customer
keeps.
!The heat pump
must be transported
and stored upright.

9CTC EcoPart 600M
2. Connection alternative
CTCEcoPart600M
CTC EcoPart600M (612M/616M)
CTC EcoLogic Pro/Family
CTC EcoZenith i550 Pro !Control products must have software version
(or later):
CTC EcoZenith i550 Pro: 2019-06-20
CTC EcoLogic Pro/Family: 2019-08-01
2.1 General
Below are the connection options (controlling products) available for
CTCEcoPart 600M.

10 CTC EcoPart 600M
3. Technical data
3.1 Table CTC EcoPart 612M
EcoPart 612M
588600001
400 V 3N~ 50 Hz
kW 5.8
A 2.3
A 9.7
A 16 / 13
IP X1
kg 2.4
ton 4.258
MPa (bar) 3.1 (31)
kg 170 (188 )
mm 673 x 596 x 775
dB(A) 39/41
HP Keymark Cert. No. 012-073
l 4.1
°C -5 / +20
bar 0.2 / 3.0
l/s 0.29
l/s 0.39
kW 11.8
@ 0/35 | 0/45 | 0/55 kW 6.08 I 5.68 I 5.24 @50 rps
@ 0/35 | 0/45 | 0/55 kW 1.27 I 1.54 I 1.78 @50 rps
COP 1) @ 0/35 | 0/45 | 0/55 - 4.78 I 3.68 I 2.95 @50 rps
@ 5/35 | 5/45 | 5/55 kW 7.1 I 6.65 I 6.36 @50 rps
COP 1) @ 5/35 | 5/45 | 5/55 - 5.62 I 4.26 I 3.57 @50 rps
SCOP 0/35 Pdesign cold climate 2) Pdesign = 11 kW, SCOP = 5.5
SCOP 0/55 Pdesign cold climate 2) Pdesign = 7 kW, SCOP = 4.3
SCOP 0/35 Pdesign average climate 2) Pdesign = 10 kW, SCOP = 5.4
SCOP 0/55 Pdesign average climate 2) Pdesign = 7 kW, SCOP = 4.1
°C 100
l/s 0.28
l/s 0.56
Electrical data
CTC No.
Electrical data
Rated power
Max starting current
Compressor max operating current
Max / min fuse rating
Enclosure class (IP)
Other data
Refrigerant quantity (R407C, fluorinated greenhouse gas GWP
1774)
CO2equivalent
Interrupt value switch HP
Weight (packaged weight)
Dimensions (depth x width x height)
Noise level (LWA) @ B0 and W35/55 in compl.w.EN12102
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 @50 rps
Pump capacity Refer to diagram in section
Brine system pump
The products are not covered by the periodical check for leaking refrigerant.
Operational data for heat pump
Max rated output
Rated output 1)
Input power 1)
Output 1)
1) EN14511:2018
2) SCOP according to FprEN14825
3) At ∆t = 10 K and 0/35°C heat pump operation.
4) At ∆t = 5 K and 0/35°C heat pump operation.
Heating medium system
Max temperature heat carrier (TS)
Heating carrier system, min flow 3)
Heating carrier system, nominal flow 4)
Pump capacity Refer to diagram in section
Installation

11CTC EcoPart 600M
3.2 Table CTC EcoPart 616M
EcoPart 616M
588600002
400 V 3N~ 50 Hz
kW 7.0
A 1.8
A 11.1
A 16 / 13
IP X1
kg 2.2
ton 3.903
MPa (bar) 3.1 (31)
kg 172 (190)
mm 673 x 596 x 775
dB(A) 36/40
HP Keymark Cert. No. 012-SC0819-18
l 4.1
°C -5/20
bar 0.2/3.0
l/s 0.29
l/s 0.39
kW 16
@ 0/35 | 0/45 | 0/55 kW 10.52 I 9.58 I 8.90 @50 rps
@ 0/35 | 0/45 | 0/55 kW 2.34 I 2.80 I 3.27 @50 rps
COP 1) @ 0/35 | 0/45 | 0/55 - 4.50 I 3.43 I 2.72 @50 rps
@ 5/35 | 5/45 | 5/55 kW 12.26 I 11.22 I 10.55 @50 rps
COP 1) @ 5/35 | 5/45 | 5/55 - 5.07 I 3.87 I 3.14 @50 rps
SCOP 0/35 Pdesign cold climate 2) Pdesign = 16 kW, SCOP = 5.5
SCOP 0/55 Pdesign cold climate 2) Pdesign = 16 kW, SCOP = 4.22
SCOP 0/35 Pdesign average climate 2) Pdesign = 16 kW, SCOP = 5.2
SCOP 0/55 Pdesign average climate 2) Pdesign = 16 kW, SCOP = 4.0
°C 100
l/s 0.40
l/s 0.81
Electrical data
CTC No.
Electrical data
Rated power
Max starting current
Compressor max operating current
Max / min fuse rating
Enclosure class (IP)
Other data
Refrigerant quantity (R407C, fluorinated greenhouse gas
GWP 1774)
CO2equivalent
Interrupt value switch HP
Weight (packaged weight)
Dimensions (depth x width x height)
Noise level (LWA) @ B0 and W35/55 in compliance with EN12102
Brine system
Liquid 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 @50 rps
Pump capacity Refer to diagram in section
Brine system pump
The products are not covered by the periodical check for leaking refrigerant.
Operational data for heat pump
Max rated output
Rated output 1)
Input power 1)
Output 1)
1) EN14511:2018
2) SCOP according to FprEN14825
3) At ∆t = 10 K and 0/35°C heat pump operation.
4) At ∆t = 5 K and 0/35°C heat pump operation.
Heating medium system
Max temperature heat carrier (TS)
Heating carrier system, min flow 3)
Heating carrier system, nominal flow 4)
Pump capacity Refer to diagram in section
Installation

12 CTC EcoPart 600M
3.3 Component location cooling module
1. Compressor
2. Evaporator
3. Condenser
4. Drying filter
5. Expansion valve
6. High pressure switch
7. High pressure sensor
8. Low pressure sensor
9. Drain valve cold side/Brine
10. Drain valve warm side/Water
11. Brine pump
12. Charge pump
13. Brine in Ø28 mm (from rock)
14. Brine out Ø28 mm (to rock)
15. Heat carrier out (flow line) Ø22
16. Heat carrier in (return line) Ø22
17. Discharge sensor
18. Brine sensor in
19. Brine sensor out
20. Suction gas sensor
21. Sensor WP In
22. Sensor WP Out
23. AC-chokes (x3)
24. Sensor temp. AC-choke
23
23
1
1
4
5
7
810
9
12
11
18
22
32
6
13
14
15
16
17
19
21
20
24

13CTC EcoPart 600M
3.4 Dimensions diagram
775
559 531
672
70 80 110 80
163 80 110 80 163
623
80 110 80 163163
596

14 CTC EcoPart 600M
1. Brine (heat source)
2. Water
3. Evaporator
4. Condenser
5. Compressor
6. Expansion valve (electronic)
7. Drying filter
8. Refrigerant heat exchanger
9. Low pressure sensor
10. High pressure sensor
11. High pressure switch
12. Temp suction gas
13. Temp hot gas
14. Temp brine
15. Temp water out
16. Temp water in
17. Control expansion valve
3.5 Refrigerant system
• Heat pump CTC EcoPart 600M
• Safety valve 1/2" 3 bar
• Filter ball valve magnet 3/4" *
• Filter ball valve magnet 1" **
• Filler manifold brine G25*/G32**
• Brine vessel*
• 2 x rubber grommets Ø60 (for heat carrier tubes)
• 2 x edging 186 mm (for brine tubes)
-----------------------------
* Applies to CTC EcoPart 612M
** Applies to CTC EcoPart 616M
3.6 Delivery includes:
1 3 24
5
8
6
7
9 10 11
12 13
1514
16
17

15CTC EcoPart 600M
4. Installation
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 heat pump must be connected to an expansion vessel in an open or
closed system.
NB: If necessary, flush the radiator system before connecting!
Apply all the installation settings based on the description in the chapter on
First start .
4.1 Connection of the heat medium
side
Flow and Return Lines are installed for the heat pump; at least Ø22 mm
copper tubing for CTC EcoPart 612M and Ø28 mm for CTC EcoPart 616M.
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.
4.1.1 Circulation Pumps (Charging pumps) (G11)
The following circulatory pumps are factory-fitted:
CTC EcoPart 616M: UPML - XL GEO 25-125 130 PWM
CTC EcoPart 612M: Yonos Para RS 25/7.5
4.1.2 Pump diagram EcoPart 600M
CTC EcoPart 612M
Yonos Para SO 25/7.5 PWM1 130
E
art. nr
Utgåva
Ämnes nr
Ersätter
art. nr
Ersättes av
Grupp
Produkt
Reg. nr
Benämning
Tol.system
Kontr.
Normgr.
Skala
Ritad
Material
Datum
Sign.
Distr till/Antal
Ytjämnhet RA
Godk. prod
Om ej annat angives gäller ovanstående
Denna ritning är Enertech AB's egendom. Den får ej användas till skada för företagets intressen.
Diese Zeichnung ist das Eigentum der Enertech AB und darf nicht zum Scha- den dieser Gesellschaft verwendet werden.
This drawing is the property of Enertech AB and is not to be used against the interest of this com- pany
1:2
JoW
2015-05-05
Pump Yonos Para RS 25/7,5 PWM1 130
1587166
Wilo-nr: 4526836
JA
586877301
blad 2/2

16 CTC EcoPart 600M
CTC EcoPart 616M
UPML - XL GEO 25-125 130 PWM, 1 x 230 V, 50/60 Hz

17CTC EcoPart 600M
5. Connecting the cold carrier
system (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.
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 of the coolant system can fall below 0°C. It is therefore
important that water-based lubricants, etc. are not used during installation. It
is also important that all the components are insulated against condensation
to prevent the build-up of ice.
5.1 Connections
The brine system may be connected to the right, left or top of the heat
pump, as well as to its rear. Cut away the cover plate on the side where the
brine system is 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 brine 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 brine 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 according to the section
Principal sketch
brine system
.
It is also possible to connect the primary flow on one side of the heat
pump and the return on the other. Refer to section
Dimensions sketch for
measurements and dimensions. The pipe dimension between the heat pump
and brine loop should be not less than Ø28 mm.
!We recommend
that you follow
the installation
instructions from
the local Heat Pump
Association.
Brine inBrine out
Edging strips (x2), supplied
Possible take-offs, Brine hoses

18 CTC EcoPart 600M
96 Level/expansion vessel
97 CTC filling kit
98 Shut-off valve
99 Filter
100 External filling pump
101 Mixing vessel
102 Brine pump
103 Evaporator
104 Safety valve 3 bar
5.2 Brine system schematic diagram
The diagram shows the main connection for the brine system. The filling
equipment is represented by the parts displayed with dashes. NB: Collector
hoses must have a bleeding facility as air pockets can occur. Always check
the filter (99) when filling and bleeding the brine system.
!The mixing ves-
sel and filling pump
must be of an ade-
quate dimension.
5.1.1 Valves
To facilitate servicing of the cooling unit, shut-off valves must be fitted to
both the incoming and outgoing connections. Mount the valves (98d and
104) with the bifurcation so that you can later fill and bleed the collector
circuit.
5.1.2 Insulation against condensation
All pipes in the brine system must be insulated against condensation to
prevent the possibility of severe build-up of ice and condensation dripping.
104
102
103
98d
100
101
99
97
96
98c
98a
cTc
98b

19CTC EcoPart 600M
5.1.3 Filling and venting
The collector circuit must not contain any air. Even the smallest amount of
residual air can jeopardise the heat pump’s operation.
Mix water and antifreeze solution in an open vessel. Connect hoses to the
shut-off valves (98a and 98b) as shown in the figure. NB: The hoses must
have a minimum diameter of 3/4". Connect a powerful external pump (100)
for refilling and bleeding. Open the valves (98a and 98b) so that the brine
passes through the mixing container (101). Also make sure that the valve
(98d) is open.
To start the brine pump, refer to the manual of the controlling product.
Allow the brine to circulate in the system for a long period of time until it is
completely free of air. There could still be air in the system, even though no
air accompanies the liquid out.
Bleed the level vessel (96) by loosening the plug on the top of the level
vessel.
Now close the valve (98a) while the filling pump continues to run. The filling
pump (100) now pressurises the system. Also close the valve (98b) and shut
off the filling pump.
If the level in the level vessel is too low, close the valves (98c) and (98d).
Unscrew the plug and fill the vessel to around 2/3 full. Screw the plug back
in and open the valves (98c) and (98d).
5.1.4 Pressure/level switch
In some cases, extra protection is required due to local requirements
or provisions. For example, the requirement in some areas is for the
system to be installed within a water catchment area. If there is a leak, the
compressor and brine pump stop and the Flow/level switch alarm appears
on the controlling product’s display. For connection, see the manual for the
controlling product.
5.1.5 Post-installation check on brine system
After a few days, you must check the fluid level in the vessel. Fill if necessary
and close the valve (98c) when filling.
5.1.6 Level vessel/Expansion vessel (CTC EcoPart
612M)
The level vessel (96) should be fitted to the incoming line from the borehole
or ground, at the system’s highest point. This applies to CTC EcoPart 612M
(CTC EcoPart 616M has no level vessel). Bear in mind that the tank can
produce condensate on its exterior. Mount the safety valve (104) According
to the principle sketch and install the appropriate stopper at the top of the
vessel. If the receptacle cannot be mounted at the highest point, a closed
expansion vessel shall be fitted.
5.1.7 Filling kit with dirt filter
Arrows on the valve housing indicate the flow direction. Close the valve
(98c) when cleaning the filter. Unscrew the filter cap and flush the filter
clean. When refitting, the pin under the filter holder should be fed into the
designated hole in the filter housing. Top up with a little brine, if necessary,
before fitting the cap. The filter should be checked and cleaned after a short
period of operation.
!Check the dirt filter
after bleeding has
been completed.
!The fluid must be
thoroughly mixed
before the heat
pump is started.
!Check the dirt filter
in the brine system
after a few days’
operation.

20 CTC EcoPart 600M
5.3 Brine pump (G20)
For CTC EcoPart 612M and 616M, a circulation pump is used:
UPMXL - GEO 25-125 180 PWM, 1 x 230 V, 50/60 Hz .
5.1.8 Brine
The brine circulates in a closed system. The fluid consists of water and antifreeze
solution. Sentinel R500 & R500C are recommended for use in the brine circuit.
The glycol is mixed at a concentration of slightly less than 30%, which is
equivalent to fire risk class 2b and a freezing point of around –15°C.
It is a CTC recommendation that around 1 litre of brine/glycol is required per
metre of collector hose, i.e. around 0.3 litres of antifreeze solution will be needed
per metre of hose, for a hose diameter of 40 mm.
5.1.9 Air pockets
To avoid air pockets, make sure that the collector hoses constantly rise towards
the heat pump. If this is not possible, it must be possible to bleed the system
at the high points. The filling pump usually copes with smaller local height
discrepancies.
5.1.10 Checking brine difference
When the heat pump is running, regularly check that the temperature difference
between incoming and outgoing brine temperatures is not too large. If there is a
large difference, one of the causes may be due to air in the system or a blocked
filter. If this is the case, the heat pump triggers the alarm.
The alarm factory setting is 7°C, but 9°C is permitted for the first 72 hours while
the compressor is running, as microbubbles in the system can reduce brine flow.
≤
≤
0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5
Q [m³/h]
0
2
4
6
8
10
12
[m]
H
0
20
40
60
80
100
120
[kPa]
p
0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6
Q [l/s]
0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5
Q [m³/h]
0
40
80
120
160
[W]
P1