Gebwell Qi Series, Qi 6, Qi 8, Qi 10, Qi 13 Installation, Operation And Maintenance Manual

Installation, Operation and

Maintenance Manual

Qi Ground Source Heat Pump

WWW.GEBWELL.COM

Contents

1 WARRANTY ...................................................................................................................................................................................... 5

2 INSTALLATION RECORD ............................................................................................................................................................... 7

3 GROUND SOURCE HEAT AND COOLING .................................................................................................................................... 8

3.1 Ground source heat energy ...................................................................................................................................... 8

3.2 Ground source cooling ............................................................................................................................................ 8

3.3 Ground source heat pump’s operating principle...................................................................................................... 8

3.4 Heating functions .................................................................................................................................................... 9

3.5 Tips for saving ......................................................................................................................................................... 9

4 DELIVERY AND HANDLING ........................................................................................................................................................ 10

4.1 Safety instructions ................................................................................................................................................. 10

4.2 Delivery contents .................................................................................................................................................. 10

4.3 Optional accessories .............................................................................................................................................. 10

4.4 Storage .................................................................................................................................................................. 10

4.5 Transport ............................................................................................................................................................... 10

4.6 Removing the compressor unit .............................................................................................................................. 11

4.7 Hauling the compressor unit module ..................................................................................................................... 11

4.8 Removing the packaging ....................................................................................................................................... 12

4.9 Ground source heat pump’s location ..................................................................................................................... 12

5 DIMENSIONS AND PIPE CONNECTIONS ................................................................................................................................... 13

5.1 Pipe Connections ................................................................................................................................................... 13

5.2 Heat pump dimensions .......................................................................................................................................... 13

5.3 Heat pump components ......................................................................................................................................... 14

5.4 Heat pump sensors ................................................................................................................................................ 15

6 PIPE INSTALLATION ..................................................................................................................................................................... 16

6.1 Collector ................................................................................................................................................................ 16

6.2 Connecting ground cooling ................................................................................................................................... 18

6.3 Heat supply circuit ................................................................................................................................................ 19

6.4 Connecting the domestic water system ................................................................................................................. 21

7 ELECTRICAL CONNECTIONS ...................................................................................................................................................... 23

7.1 General .................................................................................................................................................................. 23

7.2 Power supply ......................................................................................................................................................... 23

7.3 Soft starter / phase sequence ................................................................................................................................. 23

7.4 Outdoor sensor ...................................................................................................................................................... 23

7.5 Room sensor (accessory) QAA55 ......................................................................................................................... 24

7.6 Room unit (accessory) QAA75 ............................................................................................................................. 24

7.7 External heating circulation pump / pump for heating circuit 2 (accessory) ......................................................... 24

7.8 Heating control group 2 (accessory) ..................................................................................................................... 24

7.9 Electric heater (SV1) power .................................................................................................................................. 24

7.10 Connection of the hot water circulation pump ...................................................................................................... 25

7.11 Alarm forwarding .................................................................................................................................................. 25

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External control of the source pump ..................................................................................................................... 25

7.12

7.13 Home / away switch .............................................................................................................................................. 25

7.14 Remote control / SmartWeb (accessory) ............................................................................................................... 25

7.15 Modbus 350 communication module .................................................................................................................... 25

8 FILLING ............................................................................................................................................................................................ 26

8.1 Filling the heating and domestic water circuits ..................................................................................................... 26

8.2 Filling the collector, non-pressurised .................................................................................................................... 26

8.3 Filling the collector, pressurised ........................................................................................................................... 26

8.4 Pressure test of the collector .................................................................................................................................. 27

9 GROUND SOURCE HEAT PUMP’S USER INTERFACE ............................................................................................................. 28

9.1 Operating elements ................................................................................................................................................ 28

9.2 Display symbols .................................................................................................................................................... 29

9.3 User levels ............................................................................................................................................................. 29

10 ACTIVATING THE GROUND SOURCE HEAT PUMP ................................................................................................................ 30

10.1 Before activation ................................................................................................................................................... 30

10.2 Activation .............................................................................................................................................................. 30

10.3 Operation without a collector and at a worksite .................................................................................................... 30

10.4 Venting .................................................................................................................................................................. 30

11 HEAT PUMP SETTINGS ................................................................................................................................................................. 32

11.1 Time and date ........................................................................................................................................................ 32

11.2 Language selection ................................................................................................................................................ 32

11.3 Time programme settings ...................................................................................................................................... 32

11.4 Domestic hot water settings .................................................................................................................................. 32

11.5 Settings for heating functions ................................................................................................................................ 33

11.6 Settings for the compressor functions ................................................................................................................... 35

11.7 Settings for the electric resistor (SV1) .................................................................................................................. 36

11.8 Electric resistor’s operating method (SV1) ........................................................................................................... 36

12 HEAT PUMP OPERATION ............................................................................................................................................................. 38

12.1 Navigating in the menu ......................................................................................................................................... 38

12.2 Symbols ................................................................................................................................................................. 38

12.3 Setting the heating ................................................................................................................................................. 38

12.4 Setting domestic water heating .............................................................................................................................. 39

12.5 Heating system tracking ........................................................................................................................................ 40

12.6 Special operations ................................................................................................................................................. 40

12.7 The heat pump's measurements ............................................................................................................................. 41

12.8 Vocabulary ............................................................................................................................................................ 42

12.9 Heat pump status information ............................................................................................................................... 42

12.10 Special situations ................................................................................................................................................... 42

12.11 Heat pump status ................................................................................................................................................... 42

12.12 Heating circuit status information ......................................................................................................................... 42

Gebwell Qi Installation, operation, and maintenance manual
3

Domestic hot water status information .................................................................................................................. 43

N

N

12.13

13 MAINTAINING AND SERVICING THE GSHP ............................................................................................................................. 44

13.1 Maintenance notice ............................................................................................................................................... 44

13.2 Inspections ............................................................................................................................................................ 44

13.3 Draining the hot water accumulator (LVV1) ........................................................................................................ 44

13.4 Draining the heating system .................................................................................................................................. 44

13.5 Draining the collector ............................................................................................................................................ 45

14 FAILURES ........................................................................................................................................................................................ 46

14.1 Alerts ..................................................................................................................................................................... 46

14.2 Troubleshooting .................................................................................................................................................... 46

14.3 Troubleshooting table ............................................................................................................................................ 48

15 TECHNICAL SPECIFICATIONS .................................................................................................................................................... 52

16 SET POINT EXAMPLES FOR HEAT PUMP ADJUSTMENTS IN DIFFERENT HEATING NETWORKS. ............................... 53

17 MAINTENANCE RECORD ............................................................................................................................................................. 54

18 ENERGY LABELS ........................................................................................................................................................................... 55

APPENDIX 1: ELECTRICAL DIAGRAM

APPENDIX 2: DECLARATION OF CONFORMITY

ALWAYS KEEP THE OPERATING MANUAL IN THE IMMEDIATEY VICINITY OF THE DEVICE!

Carefully study the manual before installing, adjusting or maintaining the device. Observe the instructions provided. Request
a technician to fill out the Commissioning and Warranty Protocol, one copy of which must be returned to the device
manufacturer. The protocol is a requirement for maintaining the validity of the manufacturer’s warranty.

Fill out the information below. This information must be available if the device experiences any failures.

Model: Serial number:

HVAC company:

ame:

Date: Tel.:

Electrician:

ame:

Date: Tel.:

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1 WARRANTY

Patruunapolku 5, 79100 LEPPÄVIRTA, tel [phone], [e-mail]

a warranty regarding manufacturing and material faults, with the following contents.

Gebwell Ltd.

issues the product,

QI heat pump

Warranty period and start date

A two- (2) year warranty will be issued to this product,
counting from the product delivery date.

Two copies of the commissioning and warranty protocol
will be delivered with the heat pump. The installer /
reseller of the heat pump fills the said protocol in and goes
over it with the customer. Both Parties confirm they have
gone over the protocol, and accept the terms of warranty
with their signature. The customer’s copy of the warranty
protocol must be stored, and presented on request. The
other copy must be delivered to the factory within 1 month
from the product commissioning date. The warranty is not
valid in case the commissioning and warranty protocol has
not been filled in correctly, or if the factory copy has not
been returned to the factory.

Warranty contents

The warranty extends to all manufacturing and raw
material faults that have occurred in this product during
the warranty period, as well as the direct expenses related
to the changing of these devices.

The buyer is responsible for any device malfunctions
caused by the storage conditions between the delivery and
commissioning date (cf. installation, operating and
maintenance manual; storage).

5-year component warranty

In addition to the normal product warranty, a five- (5) year
component warranty will be issued to the heat plate
exchangers, starting from the product delivery date.

The component warranty does not extend to the direct or
indirect expenses caused by the changing of a component.
Otherwise, all terms and limitations of the product
warranty apply for the component warranty, as well.

Warranty limits

The warranty does not extend to the expenses (travel,
power consumption, etc.) caused by a malfunctioning
device, the buyer’s production loss, loss of earnings or
other indirect expenses.

This warranty has been given on the condition that the
product is working in normal operating conditions, and
that the operating instructions are followed carefully. The
liability of the guarantor is limited according to these

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5

terms and conditions, and the warranty does not extend to
such damage as the product may cause to another item or
person.

The warranty does not extend to direct personal injuries or
damage to property caused by the delivered product.

The warranty presupposes that the installation has
followed all valid regulations, generally accepted methods
of installation and installation instructions given by the
manufacturer of the product.

The warranty does not extend to or is not valid in case the
product is used in any other way than required by the
sizing.

The customer is obliged to perform a visual check on the
product before the installation, and it is not allowed to
install a product that is clearly faulty

The warranty does not cover malfuncti ons, which have
been caused by

• the transportation of the product

• the carelessness of the product operator, the

overload of the product, the failure of adhering
to the operating instructions or maintenance

• circumstances beyond the guarantor’s control,
such as voltage fluctuations (the maximum
range of voltage fluctuations is +/- 10%),
lightning, fire or accidents other than those
caused by the repair work, maintenance or
structural changes done by authorised resellers

• product installation or positioning on the
operating site, which is in contradiction with the
installation, operating and maintenance manual,
or otherwise incorrect.

The warranty does not extend to the repair of defects that
are insignificant as far as the product’s operating
condition is concerned, such as surface scratches. The
warranty does not extend to the normal adjustments of the
product as outlined in the operating manual, operation
training visits, maintenance and cleaning measures, or
such work which is caused by the neglect of safety or
installation regulations or the settlement of this on the
installation site.

The warranty terms outlined in the joint recommendation
of the Association of Finnish Metal and Engineering
Industries and the Finnish Competition and Consumer
Authority are observed to such an extent which has not
been separately mentioned above.

The warranty becomes void, if the product is

How to submit a service request

All warranty repairs, service requests and orders for spare
parts will primarily be submitted directly to the authorised
Gebwell reseller that sold/delivered the product. Before
submitting a service request, the following things must be
taken into consideration:

• repaired or altered without Gebwell Ltd.’s
permission

• used for a purpose, for which it has not been
intended

• stored in a humid or otherwise unsuitable
location (cf. installation, operating and
maintenance manual).

What to do if a malfunction occurs

If a malfunction occurs during the warranty period, the
customer must immediately (normally within 14 days)
notify the authorised Gebwell reseller from whom the
product was bought. The notification must include which
product has malfunctioned (product model, serial
number), the details of the malfunction in as much detail
as possible, as well as the circumstances when the
malfunction has developed and/or occurs. The warranty
form, correctly filled in at the handover time must be
submitted on request. Appealing to a warranty-period
notification is not valid after the warranty period is over,
unless the notification has been submitted in writing
during the warranty period.

The notification must be submitted immediately after the
malfunction has been discovered. If the notification is not
submitted immediately once the buyer has noticed the
malfunction, or when the buyer should have noticed the
malfunction, the buyer loses the right to appeal to this
warranty.

Maintenance service in Finland

• read the installation, operating and maintenance
manual carefully and think whether you have
used the device in accordance with the
instructions in the manuals

• before submitting a warranty repair request,
ensure that the warranty period is still valid,
read the warranty terms carefully and find out
the product’s model and serial numbers

• all parts belonging to a device must be included
when the device is returned

• the returned product must be closed in such a
way, that handling it would not cause health or
environmental hazards.

A device changed on the basis of the warranty is the
property of the device manufacturer. Gebwell Ltd.
reserves the right to decide how, where and who will
perform the repair work or change that is at the
manufacturer’s responsibility.

Gebwell Ltd. is not liable for the breakdown of a
wrongfully installed device.

The device can only be repaired by a professional.
Incorrect repair work and settings can cause danger for the
user, the malfunction of the device, and weaken the
efficiency of the device. The visit of a retailer or a service
agent is not free of charge even during the warranty
period, in case the device has to be repaired due to
incorrect installation, repair or adjustment.

Maintenance work for this product, during the warranty
period and after the warranty period, is performed by the
maintenance organization authorised by the manufacturer,
throughout the entire estimated economic life of the heat
pump.

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2 INSTALLATION RECORD

The heating system must be inspected before commissioning following in-force regulations. Only qualified persons may
conduct the inspection. The installation record of the operating manual must be filled out before handing the device over to
the end user.

x Description Note: Inspected by: Date:

Collector:
System pressure tested
System flushed
System vented
Collector liquid
Expansion vessel
Mud separator
Safety valve
Shut-off valve

x Description Note: Inspected by: Date:

Heating system:
System pressure tested
System flushed
System vented
Safety valve
Diaphragm expansion vessel
Mud separator
Pressure gauge
Shut-off valve
Admission valve
Buffer accumulator

x Description Note: Inspected by: Date:

Domestic water:
System pressure tested
System flushed
Safety valve
Pressure gauge
Buffer accumulator

x Description Note: Inspected by: Date:

Electricity:
Property fuses
Heat pump fuses
Phase sequence
32A power socket
Outdoor temperature sensor

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7

3 GROUND SOURCE HEAT

AND COOLING

A well-designed and appropriately dimensioned ground
source heating system is affordable in terms of operating
expenses and energy efficient. With a ground source heat
pump, you can efficiently heat both interior air and
domestic water. In summer, the system can also be used
to cool interior air in an environmentally friendly fashion.

3.1 Ground source heat energy

A ground source heat pump collects heat from the ground
and transfers it inside the building. The heat can be
collected using pipes sunk in a bored well, heat collection
pipes installed near the ground surface or pipes anchored
at the bottom of a water system.

Bored well as a heat source

More information on heat collection systems and their
scaling can be found on the website of Gebwell Ltd. and
the Finnish Heat Pump Association.

Ground as a heat source

www.gebwell.com

www.sulpu.fi

3.2 Ground source cooling

The cold temperature of the brine can also be used to cool
dwellings. In summer, the free cooling energy can be
transferred from the ground with just a circulation pump.
The ground source heat system can be connected to the
convection heaters of the ventilation system or a
underfloor heating/cooling system for cooling purposes.

3.3 Ground source heat pump’s operating

principle

The ground source heat pump’s refrigerant circuit
includes four main components:

• Evaporator

• Compressor

• Condenser

• Expansion valve

The heat in the ground is absorbed into a liquid solution
circulating in the heat collection pipes.

In the evaporator, the liquid comes into contact with the
refrigerant that, when vaporised, binds heat energy from
the liquid solution that circulates in the ground. The liquid
solution returns to the ground about 4°C cooler than when
coming out to the surface. The lowest permissible
temperature for the liquid solution coming to the heat

Water system as a heat source

8 v3-8 23052017

pump is -5°C.

The compressor increases the pressure and temperature of
the refrigerant. The refrigerant also absorbs the heat
energy generated by the compressor’s operation.

The hot refrigerant is conveyed to the condenser, where
the heat energy of the refrigerant is transferred to the water
circulating in the building’s heating system. The
refrigerant condenses into liquid upon releasing heat
energy.

The pressure of the refrigerant remains high when being
transferred to the expansion valve. In the valve, the
refrigerant’s pressure decreases rapidly. From the
expansion valve, the refrigerant passes on to the
evaporator where it is once again evaporate. At this point,
the refrigerant absorbs heat from the liquid solution
circulating in the heat collection piping.

Heat supply and source pump:

In order for a heat pump to function at the best possible
efficiency, the conditions of the heating system and
collector must be ideal. The difference between the
heating system’s output and input temperatures must be
6°C–10°C and the output and input temperature difference
of the collector must be 3°C–4°C. Efficiency and savings
are reduced at temperature differences other than those
described above.

Factory settings:

Heat supply pump: 6°C

Source pump: 4°C

3.5 Tips for saving

The heat pump's function is to produce heat and domestic
hot water according to your wishes. The system aims to
fulfil these wishes by all means available, within the
framework of the set values.

Important factors affecting the energy consumption are
the interior temperature, hot water consumption, hot water
temperature level, the insulation level of the real estate, as
well as the desired level of comfort. Please note the above
points when making changes on the device for settings.

3.4 Heating functions

Domestic water

The heat pump produces domestic water based on the B3
measurement sensor. Compressor K1 is factory set to
activate when the measurement value drops under +45°C
and deactivated when the value reaches +50°C.

The “domestic water temperature 1” value, which is
shown in the control unit menu, is the temperature
measured by the domestic water operating sensor. The
actual temperature of the domestic water is 5°C–7°C
higher.

Heating

The heat pump produces heating water directly into the
building’s heating network. The control automation
activates the charging procedure when the measurement
value for supply water is 2.5°C lower than the supply
water set point. Charging is deactivated when the
measurement value is 2.5°C higher than the set point.

IMPORTANT!

Thermostats for floor heating and radiators can have a
negative impact on energy consumption. They slow down
the flow in the heating system and the heat pump will
compensate this by raising the temperature of the network.
This will affect the operation of your device consuming
more electricity. Thermostats are designed to react only to
control of so-called free-heat (sun, heat generated by

people, fireplaces, etc. ...).

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4 DELIVERY AND

HANDLING

4.4 Storage

Before installation, the ground source heat pump must be
kept in its delivery package in a dry and warm location.

4.1 Safety instructions

The following safety instructions are to be taken into
account when handling, installing and using the
equipment.

• Do not lift the equipment from any other than the
points indicated on the manual.

• Remove the plug from the socket before carrying
out any maintenance measures.

• Never compromise safety by bypassing safety
devices.

• Only qualified personnel should conduct
maintenance / repair measures on the cooling
unit of the equipment.

• The heat pump is not to be flushed with water.

• Keep all the shell plates in place to prevent water

splashing on the electronic components of the
equipment.

4.2 Delivery contents

• Ground source heat pump

• Installation, operating and maintenance manual

1 pc

• Outdoor temperature sensor 1 pc

• Safety valve for heating circuit

G1/2” – 2.5 bar 1 pc

• Safety valve for domestic water circuit
G1/2” – 10 bar 1 pc

• Supply cord with power plug 1 pc

4.3 Optional accessories

• Collector valve group

• Qi installation set (with or without pump)

• Qi R installation set

• Heating control group

• SMS/WEB server, SMARTWEB

• Cooling control group

• Cooling convector

• Buffer accumulator for domestic water

• Buffer accumulator for heating

• Circulation pump set for domestic water

• Pool heating set

• Diaphragm expansion vessel for collector

• Diaphragm expansion vessel for heating

• Energy measurement

4.5 Transport

The heat pump may be temporarily tilted, but it must not
be left inclined for a long period of time, not even in
transit. The heat pump’s maximum tilt angle is 20°. It is
not recommended to turn the pump on its side.

However, if there is a need to turn the heat pump on its
side, for transport purposes, for example, the compressor
unit must be removed for the duration of transit. In any
case the heat pump must not be transported on its back. If
the heat pump has been tilted in transit, you must allow
the pump to stand upright for at least two hours before
activation so that the compressor’s (K1) lubrication oil has
time to reach the required locations. Only lift the heat
pump by the pallet. The pump must be transported on the
pallet all the way to the installation location.

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4.6 Removing the compressor unit

1. First, disconnect the front door of the ground
source heat pump by unscrewing the top screws.

2. Disconnect the pipes from the connections
(valves VS1…VS4). NOTE! If you have to

disconnect the unit, ensure that the collector
pipes are insulated when the unit is reinstalled in
order to avoid condensation.

4. Pull the compressor unit out.

4.7 Hauling the compressor unit module

3. Open the screws of the compressor unit supports
and disconnect the compressor unit plugs from
the switchboard and the compressor unit.

The compressor unit is equipped with loops for lifting.
Shafts can be used to lift up the compressor unit. By
threading the shafts through the loops, hauling the
compressor unit can be made easier.

The weight of the compressor unit:

Qi 6 96 kg

Qi 8 103 kg

Qi 10 104 kg

Qi 13 110 kg

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11

4.8 Removing the packaging

The product is packaged in protective plastic such that the
installation can be performed without removing the
plastic. The protective plastic can be kept in place to
protect the pump until activation.

• Ensure that you have received the correct
products with the correct accessories.

• Transport the heat pump near the planned
installation location.

• Lift the pump off its transport pallet.

• Adjust the pump so that it is level and stands

firmly on its adjustable legs.

• Ensure that the frame, with the exception of the
adjustable legs, is not in contact with the
building’s structures.

4.9 Ground source heat pump’s location

A variety of matters related to safety, comfort of use and
maintenance must be considered when positioning the
ground source heat pump.

The temperature of the location must be between +5°C
and +30°C. The room must be sufficiently ventilated. If
the humidity in the room is high, water condenses on the
cold pipe sections of the collector.

The heat pump compressor (K1) generates noise that may
be conveyed to other spaces via the building’s structures.
It is recommended to use flexible parts in the pipe
connections. The ground source heat pump must be
positioned in a way that the sound does not disturb any
living areas. If necessary, soundproofing of the wall
structures between the room in which the pump is located
and the living areas can be reinforced and extra rubber
pads installed under the pump’s legs. We recommend
placing the ground source heat pump in a separate
technical room. The sound transmitted through structures
can be limited with the floor structures of the pump room
and other solutions. A separate cast floor cut off from the
building’s other spaces prevents noise from being carried
to living areas through the floor.

Reserve at least 700 mm of maintenance space in front of
the pump so that the compressor unit can be taken out for
maintenance. For the same reason, do not install the pump
below the floor surface. Leave free space behind the
ground source heat pump to prevent the transfer of any
vibrations. In addition, reserve at least 600 mm of free
space at the sides of the pump if you want to connect the
collector pipes to the pump’s sides instead of the top.

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5 DIMENSIONS AND PIPE

CONNECTIONS

5.1 Pipe Connections

5.2 Heat pump dimensions

A1. Brine from the ground ø28 mm

A2. Brine to the ground ø28 mm

B1. Heating supply
Qi6-10 ø22 mm, Qi 13 ø28 mm

B2. Heating return
Qi6-10 ø22 mm, Qi 13 ø28 mm

C1. Cold water ø22 mm

C2. Domestic hot water ø15 mm

C3. Hot water circulation ø15 mm

E1. Electrical connections (outdoor sensor, flow sensor,
actuators, etc.)

Gebwell Qi Installation, operation, and maintenance manual
13

5.3 Heat pump components

CHANGE-OVER VALVE

+ ACTUATOR (VV1)

AIR VENT NIPPLE (VI1)

HOT WATER ACCUMULATOR (LVV1)

SWITCHBOARD

FLOW-THROUGH
RESISTOR (SV1)

SHUT-OFF VALVE (VS1)

OVERHEAT PROTECTOR
FOR FLOW-THROUGH
RESISTOR (SV2)

SHUT-OFF VALVE (VS2)

CIRCUIT

BREAKERS

(F2, F3, F4, F10)

MOTOR’S PROTECTIVE SWITCH (F1)

SHUT-OFF VALVE (VS3)

SHUT-OFF VALVE (VS4)

INSIDE THE COMPRESSOR UNIT:

- HEAT SUPPLY PUMP (P2)

- SOURCE PUMP (P1)

- COMPRESSOR (K1)

- EXPANSION VALVE (PV1)

- EVAPORATOR (LS1)

- CONDENSER (LS2)

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5.4 Heat pump sensors

B21

B3 Domestic hot water

B21 Charge heating water supply

B91 Brine from the ground

B3

B92

B91

B71

B92 Brine to the ground

B71 Charge heating water return

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6 PIPE INSTALLATION

6.1 Collector

When 40x4.2 PN6.3 PEM hoses are used.

Device *Recommended

length of

collection piping

(m)

Qi6 300–400 110–130

Qi8 350–2x250 130–160

Qi10 400–2x300 160–200

Qi13 2x250 – 3x400 210 x 2x150

* Depends from soil

The table values are examples intended to be guidelines.
Before beginning installation, accurate calculations of the
building’s heat requirements must be prepared.

The maximum length for a single collector loop is 400 m.
If there is a need to install more piping, the piping must be
divided into two loops that are connected in parallel. The
connection must be conducted so that the loop flow can be
balanced.

The collection piping must rise constantly towards the
heat pump in order to prevent air pockets. If this is not
possible, venting mechanisms must be installed at the high
points.

UTILITY
ROOM

Residual installation impurities must be flushed from the
collector before installing the heat pump.

The collector connection must be selected before
installing the device in place. The connection can be
changed to the right, left or back instead of the top. At
least 600 mm of connection space must be reserved in the
outgoing direction.

Recommended

active drilling

depth (m)

1. Disconnect the collector pipes from the
elbow fittings by pressing the plastic collar
of the claw coupling with a wrench.

2. Disconnect the pipe from the top connection
and turn the elbow fitting to the desired
direction.

3. Cut the pipe to the desired length, if
necessary.

• Insulate all of the building’s source/brine pipes
with closed-cell insulation in order to prevent
water condensation.

• Use supports insulated with rubber to support the
pipes.

• Place the level expansion vessel in the highest
point of the collector, in the incoming pipe before
the source pump.

• Mark the name of the heat collection liquid on
the level expansion vessel.

• Install shut-off valves in the pipe connections as
close as possible to the ground source heat pump.

• Ensure that water does not spill on the pump or
in the electrical devices during operation.

• Connect the supplied collector valve group,
including the expansion vessel, as shown in the
figure. The arrow on the valve housing indicates
flow direction. The valve group size is DN25. Do
not use a pipe size smaller than 28 mm for the
connections (bigger is recommended).

• The collector must be pressure tested at a
pressure of 3bar and the test pressure must be
maintained for at least 30 min.

• In the collector/brine, only use connection parts
that are intended for cold conditions.

16 v3-8 23052017

Connection options

Connection from top

Connection from right

The incoming ground line must be branched to the
expansion vessel. The expansion vessel must be at the end
of the line rising directly upwards so that air can pass
directly into the expansion vessel. Do not make a

connection to the side branch or otherwise so that air
is not prevented from rising freely.

Connection from left

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17

Collector installation in multiple loops

When using multiple collectors, shut-off and balancing
valves must be included in all circuits. Observe the valve
manufacturer’s instructions when installing the balancing
valves. However, the valves must be installed so that
adjustment and inspection can be arranged easily and
freezing is prevented. Vent the circuits one at a time and
adjust the flow in proportion to the each circuit lengths.
Try to use collection circuits of a roughly equal length.

6.2 Connecting ground cooling

Ground cooling works best when heat is collected by
means of a bored well. The temperature of a loop installed
in the ground or in a lake may rise high enough to prevent
the extraction of sufficient cooling power. The air in the
collector must be able to freely rise to the expansion
vessel. Venting must always be arranged at the highest
point of the collector. If there is a need to connect a
cooling radiator to the highest point of the collector, the
venting must be arranged through it.

A cooling accessory available for the heat pump can be
used to control/adjust the cooling. Building automation or
an air supply unit can also control the source pump (P1)
inside the heat pump. See instructions in the electrical
connection diagram.

Connection options

Direct connection to convection heater

Pressurised collector (Recommended)

A collector can also be pressurised. In this arrangement,
the diaphragm expansion vessel, which is available as an
accessory, is used.

Connecting mixing circuit for cooling with a heat
exchanger

18 v3-8 23052017

6.3 Heat supply circuit

The heating system controls the interior temperature with
a control adjuster and, for example, radiators, underfloor
heating, ventilation and convection heaters.

• Residual installation impurities must be flushed
from the building’s heating system pipes before
installing the heat pump.

• Install the required protective devices, mud
separator (strainer) as well as the shut-off and
check valves. Shut-off valves must be installed
as close as possible to the heat pump.

• It is recommended to perform the installation to
a closed heating system with a diaphragm
expansion vessel.

• Ensure that water does not spill on the pump or
in the electrical devices during operation.

• The product must be protected against
overpressure with a safety valve. The safety
valve’s maximum opening pressure must be

4.0bar, and the valve must be installed in the
heating system’s return pipe. It is recommended
to lead the overflow pipe of the safety valves to
the nearest floor drain. Install the overflow pipe
so that the water can flow out of the pipe without
obstructions.

• A connection to a system equipped with
thermostats requires a bypass valve to be
installed in all the radiators or that a few
thermostats be removed to ensure sufficient flow.
Refer to Technical specifications –table for
pump’s minimum flow.

Connecting the heating system

Connection options

Accumulator tank to heating system

If the liquid volume of the heating system is too small in
proportion to the heat pump’s power, a buffer accumulator
can be used in the heating system.

NOTE! Ensure pump’s minimum flow with bypass valve
or by leaving sufficient amount of open circuits in heating
network. Refer to Technical specifications -table for pump
specific minimum flows.

HEATING CIRCUIT 1

Buffer reservoir

OUTDOOR SENSOR
ON NORTH WALL

Radiator/underfloor heating system with a buffer
accumulator

In radiator heating system, it is recommended to install a
buffer accumulator and extra circulation pump to avoid
the noise (clicking) in radiators. The accumulator and the
circulation pump prevent radiators from cooling down
during domestic hot water charging and the noise does not
arise.

If underfloor heating system requires an external
circulation pump, it should be dimensioned to meet the
needs of the underfloor heating system. If the liquid

OUTDOOR SENSOR
ON NORTH WALL

volume of the heating system is too small in proportion to
the heat pump’s power, a buffer accumulator can be used
in the heating system.

Gebwell Qi Installation, operation, and maintenance manual
19

Buffer reservoir

OUTDOOR SENSOR
ON NORTH WALL

Underfloor heating with an external heat supply pump

If heat pump’s internal heat supply pump is insufficient to
underfloor heating, an external heat supply pump is to be
installed. The pump has to be dimensioned to correspond
to demand of underfloor heating system.

Radiator heating HC1

Underfloor heating HC2

Buffer reservoir

OUTDOOR SENSOR
ON NORTH WALL

Connecting an heating convector post -heating radiator

The ground source heat pump can be supplemented with
an accessory QiIV1, which enables connection of post­heating radiator of water-circulating air convector. This
prevents post-heating radiator to freeze during domestic
hot water charge. Check the maximum flows and the post­heating radiator’s power levels in the technical
specifications.

NOTE! Ensure pump’s minimum flow with bypass valve
or by leaving sufficient amount of open circuits in heating
network. Refer to Technical specifications -table for pump
specific minimum flows.

Underfloor Heating 1

Underfloor Heating 2

OUTDOOR SENSOR
ON NORTH WALL

Mounting of installation set (with or without a pump)

Installation sets sold as accessory for heat pump ease and
speed up the installation. This guide to connecting applies
to both sets – with and without a pump.

Multiple heating systems with buffer accumulator

The following connection method is used when a building
features heating systems that utilise varying temperatures
– radiator heating and underfloor heating, for example.

20 v3-8 23052017

Buffer reservoir

Brine Brine CW HW SH SH

Mounting of installation set (without a pump), with a
buffer accumulator

In case the liquid volume of heating system is too small
compared to the heat pump’s power, a buffer accumulator
can be used in the heating system.

Buffer
reservoir

Brine Brine CW HW SH SH

SH

SH

Mounting of installation set (with a pump), with a buffer
accumulator

Brine Brine CW HW SH SH

Pool heating

An accessory for pool heating, UIM1Si, is available for
the heat pump. The heating circulation pump is controlled
with a pool sensor B13.

In radiator heating system, it is recommended to install a
buffer accumulator and a circulation pump to avoid the
noise (clicking) in radiators. The accumulator and the
circulation pump prevent radiators from cooling down
during domestic hot water charging and the noise does not
arise. Furthermore with use of buffer accumulator long
operating periods of compressor can be ensured.

If underfloor heating system requires an external
circulation pump, it should be dimensioned to meet the
needs of the underfloor heating system. If the liquid
volume of the heating system is too small in proportion to
the heat pump’s power, a buffer accumulator can be used
in the heating system.

6.4 Connecting the domestic water system

Residual installation impurities must be flushed from the
building’s domestic water piping before installing the heat
pump.

Install shut-off valves in the pipe connections as close to
the heat pump as possible.

Water must not spill on the pump or in the electrical
devices during operation.

Gebwell Qi Installation, operation, and maintenance manual
21

The domestic water system must be equipped with a safety
valve (max 10bar) installed in the cold water line as shown
in the figure. It is recommended to lead the overflow pipe
of the safety valves to the nearest floor drain. Install the
overflow pipe so that the water can flow out of the pipe
without obstructions.

The domestic water safety valve may leak nearly every
time higher consumption of warm domestic water ceases.
The overflow is caused by the thermal expansion of cold
water and pressure shocks. The safety valve leak can be
prevented by installing an expansion vessel in domestic
water network. The vessel evens out the pressure changes
and prevents pressure shocks.

HW

HWC

CW

CW

Accumulator tank for the domestic water system

If the consumption of domestic water is high, the heat
pump can be supplemented with an electrically heated
additional accumulator. The heat pump heats the cold
water in the internal accumulator, after which the water is
led to the external buffer accumulator. The electric
resistance of the external accumulator maintains the
temperature at the desired level. The system uses the
external accumulator to prepare for spikes in the
consumption of heat energy.

Domestic hot water circulation to heat pump’s
accumulator

Heat pump’s domestic water accumulator is equipped
with a connection to domestic hot water circulation. The
flow of the circulation is adjusted carefully to ensure
proper functioning of the accumulator. Too high flow
weakens the thermal layering in the pump’s internal
accumulator and, thus increases the number of times the
compressor requires activation.

HW

CW

HWC

Use an external accumulator if the building features
domestic hot water circulation. Domestic water
circulation connected to the heat pump may in some cases
weaken the thermal layering in the pump’s internal
accumulator and, therefore, increases the number of times
the compressor requires activation.

22 v3-8 23052017

7 ELECTRICAL

CONNECTIONS

7.1 General

Heat pump is connected to 400V (50GHz) electricity grid.
The heat pump's plug must not be connected to an
electrical outlet until the heat pump heating system is
filled with water. This can cause damage to the electric
heater, overheating protection, pumps or compressor.

All electrical equipment has been pre-wired at the factory.
If electrical accessories are installed to the heat pump,
wiring work must be performed by a qualified electrician.

• The heat pump must be disconnected before
insulation measurement.

• Heat pump wiring diagram can be found in
appendix Electrical diagram.

• If a circuit breaker is used for the heat pump, it
should be of type C.

• Cabling of the heat pump's electrical accessories
should be made through the lead-through of
control centre on the back of the heat pump.

7.2 Power supply

The ground source heat pump’s power supply is
implemented with an easily connectable 32A power plug
connection (PT) and a 2 m cable. A 32A power socket is
required in the immediate vicinity of the ground source
heat pump. Even though the plug size is 32A, the heat
pump or supply cable must be equipped with a fuse
detailed in the technical specifications table. The plug
must be disconnected from the socket during
maintenance. Position the socket so that the plug can be
easily disconnected when necessary. The socket must be
marked with the sticker included in th e heat pump delivery
"NO GROUND FAULT CIRCUIT INTERRUPTER
(GFCI), SOCKET IS TO BE USED FOR GROUND
SOURCE HEAT PUMP ONLY"

7.3 Soft starter / phase sequence

Heat pump’s compressor has a three-phase motor. It is
important that the phase sequence be connected correctly.
Pump notifies of incorrect phase sequence on the
controller screen. NOTE! Compressor's motor protection
switch (F1) must be ON.

If the pump’s phase sequence is incorrect, a LED light
begins to flash on the soft starter. NOTE! If the motor
protection switch is in the OFF position, the controller will
always give a notice: Soft starter E25 failure.

The phase sequence can be easily changed by turning the
phases in the plug. See soft starter failures in section
“Failures.”

LED light

7.4 Outdoor sensor

The outdoor temperature sensor is equipped with
connector X3. The sensor has been connected to the

Gebwell Qi Installation, operation, and maintenance manual
23

control unit and the sensor head. The sensor is equipped
with a 15m cable.

The outdoor temperature sensor is already wired to the
control centre. Position the sensor in a shaded location on
the north or north-east wall. Do not place the sensor near
windows or doors.

7.8 Heating control group 2 (accessory)

Mixing valve (X1) for heating circuit 2 and flow sensor
B12 (X2) are equipped with a connector. Heating circuit
2 must be commissioned in controller’s menu. In
commissioning of the heating circuit 2, site-specific
setting should be taken into account.

7.5 Room sensor (accessory) QAA55

For connection refer to the electrical diagram and the
instructions delivered with the room sensor.

The room sensor is connected to the connector X152,
BSB/M of the control centre.

7.6 Room unit (accessory) QAA75

Room unit QAA74.611 functions as a user interface for
the heat pump. The QAA unit is connected to connector
X86, BSB/M/G+ on the control centre. The room unit
contains an inbuilt room temperature sensor.

7.9 Electric heater (SV1) power

As factory delivery, the output of the ground source heat
pump’s electric heater is 6 kW at maximum. The
controller switches the resistors on and off in 2 phases
depending on the power required. If the resistor power
needs to be increased, the resistor control method must be
changed to 3-phase control.. The heat pump’s fuse size
must be selected according to the power of the electrical
resistor. The correct fuse size is listed in the device’s
technical table.

Resistor phase 1: 3 kW (K25)

Resistor phase 2: 6 kW (K26)

Resistor phase 3: 9 kW (K25+K26)

If the resistor power must be increased to 3-phase, see
instructions in the manual, section “Heat pump settings >
Settings for the electric resistor (SV1)”.

7.7 External heating circulation pump /

pump for heating circuit 2 (accessory)

External heating circulation pump (X9) is equipped with
a plug connector, and F4 line protection. Once the plug
(X9) is connected to the designated point on the control
centre, the pump is ready for operation. The pump can be
started from the line protection switch F4. The pump is
not connected to the heat pump’s control system.

24 v3-8 23052017

7.10 Connection of the hot water circulation

pump

Hot water circulation pump can be connected to the
electric control of the controller. Circulation pump
functions according to factory setting always when
domestic water operating mode is ON. Circulation pump
control mode can also be changed to function according
to a time programme. Change is made on controller’s
menu. See instructions on “Heat pump settings –

Domestic hot water settings”

PROTECTIVE GROUND IS
WIRED TO THE PE RAIL

.

Hot water circulation pump is connected to the X15
connector (orange) on the control centre. QX4/N,
Protective ground is wired to the PE rail.

HOT WATER CIRCULATION
PUMP MAX 0,52A

7.13 Home / away switch

External home / away switch can be connected to enable
heat pump's drop / raise functions. By turning off the
switch, domestic hot water operating mode changes to
economy and the heating circuits will change to a reduced
level. By turning the switch on, domestic hot water
heating is activated and the heating circuits will return to
the chosen operating mode.

The switch must be potential-free closing switch and it is
connected to the X150 connector, H32/M, on the control
unit.

For connection refer to appendix Electrical diagram.

NOTE! The maximum load current of hot water
circulation pump is 1A (230VAC).

7.11 Alarm forwarding

The possible ground source heat pump alarms can be
forwarded e.g. to building automation or a modem. The
alarm forwarding is connected to the fault relay K10 on
the control centre. Closing alarm information (NO) is
received from connectors 11/14 and opening alarm
information (NC) from connectors 11/12. Use a 2-pole

2

cable with a cross-sectional area of 0,5mm

at the

minimum.

7.12 External control of the source pump

The source pump can be activated by an external potential
free switch data. Switch data is connected to the connector
X152, H33/M of the control centre.

7.14 Remote control / SmartWeb

(accessory)

SmartWeb remote control unit allows the use of the heat
pump remotely over the internet or a smartphone
application. With the help of remote control you will have
access to all the heating control and events in real-time. In
case your property heating or hot water settings need to be
made changes to, with the help of SMART WEB remote
control it is effortless.

Connecting of the OZW remote control device:

Turning the switch off will activate the source pump.

7.15 Modbus 350 communication module

MODBUS communication module enables the control
and monitoring of the heat pump on a computer on your
local network. With the help of the Modbus 350

Gebwell Qi Installation, operation, and maintenance manual
25

communication module you will get the heat pump
connected to your home automation system.

Connection: Connect the ribbon cable of the Modbus 350
communication module to X60 connector.

8 FILLING

8.1 Filling the heating and domestic water

circuits

The coil of the heat pump’s accumulator contains water of
the heating system.

• Fill the accumulator’s coil and the heating circuit
using the heating system’s filling valve.

• Vent the system carefully. When venting the
accumulator’s coil, place a container under the
vent screw (VI1) to ensure that water does not
spill on the control centre.

• Ensure that the system pressure is appropriate for
operation. The pressure must be 0.5 bar during
filling and approximately 0.5–1.0 bar once the
accumulator has warmed up. Check the pressure
once the accumulator is warm.

UTILITY ROOM

FILLING THE
GROUND LOOP

The domestic water accumulator does not need to be
separately vented after filling. The air is discharged as
domestic water is used.

8.2 Filling the collector, non-pressurised

Fill the collector with a mixture of water and brine that
can withstand a temperature of at least -15ºC. We
recommend bioethanol, a liquid which is
environmentally friendly.

The filling should be conducted through the F level vessel
in accordance with the figure shown here. Using a pump
for the filling generates microbubbles that disperse slowly
and cause low pressure alarms. Therefore, it is
recommended to fill the circuit at a steady and reasonable
rate.

The liquid pipes for the collector must be installed so that
air can exit through valve G of the circuit’s level vessel.
In other words, the expansion vessel must be located at the
highest point and the liquid pipes must not form air
pockets.

The liquid circuit must be filled at a steady rate through
the level vessel. The volume of liquid in the collection
circuit is sufficient when the liquid level of the expansion
vessel is between 1/3 and 2/3.

Check strainer E by first shut-off valves A and B, and
opening the strainer cover. After cleaning the strainer,
open valve A to release the air from the strainer housing
to expansion vessel F. Open valve B.

8.3 Filling the collector, pressurised

Fill the collector with a mixture of water and brine that
can withstand a temperature of at least -15ºC. We
recommend bioethanol, a liquid which is
environmentally friendly.

If the level vessel cannot be installed at the highest point
of the collector, a pressurised circuit, including an
expansion vessel and level vessel, should be used. Fill the

26 v3-8 23052017

GROU

circuit at a steady rate through the distribution well’s vent
valve L. The volume of liquid in the collection circuit is
sufficient when the liquid level of the level vessel is
between 1/3 and 2/3.

Check strainer E by first closing valves A and B, and
opening the strainer cover. After cleaning the strainer,
open valve A to release the air from the strainer housing
to expansion vessel F. Open valve B.

Pressurise the collector by operating the external pressure
increase pump. Connect the pump to valves C and D as
shown in the picture provided here. Use a strong hose or
pipe with a minimum diameter of 30 mm.

Use two large containers when increasing the pressure.
When increasing the pressure of the collector, close valve
A. Ensure that debris from the bottom of the vessel does
not rise into the intake pipe. Monitor the circuit’s pressure
gauge I. The pressure must not rise above 2 bar.

during this time. Repair any leaks and repeat the pressure
test. Enter the pressure test as completed in the
Commissioning and warranty protocol after a successful
test. Remember to release the high pressure after the test.

FILLING THE

ND LOOP

UTILITY
ROOM

8.4 Pressure test of the collector

Perform a pressure test on the filled collector as follows:
Increase the pressure to 2bar and check the pressure in 30
minutes. The system has a leak if the pressure has dropped

Gebwell Qi Installation, operation, and maintenance manual
27

9 GROUND SOURCE HEAT

PUMP’S USER INTERFACE

On the front door:

E2: Controller

Behind the front door:

F1: Motor’s protective switch

Compressor

F2: Circuit breaker

Flow-through resistor

F3: Circuit breaker

Source pump

Heat supply pump

F4: Circuit breaker

External heat supply pump

F10: Circuit breaker

Controller

9.1 Operating elements

AVS74 operating terminal

Navigation roller

28 v3-8 23052017

9.2 Display symbols

Rights, user and expert levels:

*For experts only, maintenance companies,
requires a password:

Home, property details

Temperatures, heating/cooling

Domestic hot water settings

Info pages:

• Notifications (alarms,
events)

• Property details

• Energy monitoring

Service/settings:

• Setting changes

• Special settings

• *Expert menu

Diagnostics pages

Settings/maintenance:

• Access to all parameters

Alarm

Alarm acknowledment/requires
maintenance

Notification

Manual

Usage rights (1-3)

Heat source in process (e.g. oil/gas
burner, heat pump...)

9.3 User levels

The controller features specified user levels, which
enables that only corresponding user groups can change
settings. The device is mainly used on End user –level.
The mechanic installing the heat pump uses device on
Expert –level. Different user levels can be accessed from

Service/settings –menu.

Gebwell Qi Installation, operation, and maintenance manual
29

10 ACTIVATING THE

GROUND SOURCE HEAT
PUMP

Upon delivery, all the pump’s motor protection switches
and circuit breakers are in the 0 position.

The power switch PT serves as the pump’s main switch.

10.1 Before activation

Before activating the ground source heat pump, ensure
that

• the collector has been filled with heat transfer
liquid

• the heat pump accumulator (LVV1) has been
filled from the heating and domestic water side

• the accumulator’s (LVV1) outer housing has
been vented

• the outdoor sensor has been connected

• the heating sensors have been connected

• the electrical connections are correct

• the compressor’s motor protection switch (F1) is

in the OFF position.

• the resistor cartridge’s circuit breaker (F2) is in
the OFF position.

• the circuit breaker (F3) of the source and heat
supply pumps (P1 and P2) is in the OFF position.

10.2 Activation

• Insert the heat pump plug (PT) into the socket.

• Set circuit breaker F10 to the I position.

• Perform all plant-specific settings. For this

purpose, you must select the Expert –user level:

10.3 Operation without a collector and at a

worksite

The ground source heat pump can be used for heating even
before the collector is connected. In this case, all heat is
generated using direct electrical resistor power, and the
maximum heating power is 3 kW/6 kW/9 kW (see

“Technical specifications - Flow-through resistor
power”). However, all control functions of the heating

and domestic water side are available. Please note that the
heating and domestic water circuits must be connected
and vented, and all electrical connections must be in order.

If you want to use the ground source heat pump for
worksite heating, set the device to the “Emergency
operation” mode, which ensures that the compressor (K1)
and source pump (P1) are not activated. The heat pump
will then make sure that the domestic water and heat will
be produced using the electric resistor (SV1). Emergency
operation is activated on Special operati ons –menu. While
device is in emergency operation mode, the display will
feature symbol.

10.4 Venting

The collector must be vented extremely thoroughly.
Even a small amount of air in the brine collector will
prevent the pump from functioning normally and can
cause it to break down.

30 v3-8 23052017

In order to facilitate commissioning and troubleshooting,
the controller features an input and output test function.
You must be on the “Expert” level to use this function.
The source and heat supply pumps can be vented using
this function.

Venting the collector

• Set the circuit breaker (F3) of the source and heat
supply pumps (P1 and P2) to the I position.

• Select Expert –level on Service –menu

• Select Input/Output test

• Select Output UX 1 (1/2)

• Activate the row by pressing the roller (dark

background), scroll the value on the row down
to 50% and accept by pressing the roller → the

source pump is activated. The
appears on the display.

symbol

until the air has been expelled from the system.
You can increase the pump’s rotation speed.

• Deactivate the source pump by setting the
control row 7710 to --- (not in use/Unused)

NOTE! Pumping at excessively high power will disperse
the air in the heat collection liquid in the form of
microbubbles. This may trigger alarms during the
operation of the device. Therefore, you should begin the
venting in short cycles after which you drain the air out of
the vent valves.

Venting the heat supply circuit

• Select Output test UX 2 (7716).

• Activate the row with the OK button (row

flashes), scroll the on the row down to 50% and
accept by pressing the roller → the heat supply
pump (P2) is activated.

• Allow the pump (P2) to run for a moment and
shut it down. Activate the set point with the OK
button and scroll the value to 0%. Confirm by
pressing the roller.

• Allow the air to rise to the highest point of the
system and ensure that the vent valves are open.

• Ensure that the heating system’s pressure is at a
sufficient level for the air to be discharged
through the automatic vent valves.

• Once the venting is complete, continue running
the pump (P2) and repeat the procedure until the
air has been expelled from the system.

• At the same time perform also the venting of
accumulator’s charging coil through the valve
located above the change-over valve.

• At the end release the pump from the testing
mode. Set the control row 7716 to --- (not in
use/Unused)

• If you hear noise, such as gurgling/bubbling,
which indicates the presence of air in the circuit,
shut down the source pump (P1). → Activate
the row by pressing the roller and scroll the
value down to 0%; confirm by pressing the
roller.

• Allow the air to rise to the highest point of the
collector and open the vent valve.

• Ensure that there is a sufficient amount of liquid
in the system’s expansion vessel.

• Once the venting is complete, continue running
the source pump (P1) and repeat the procedure

Gebwell Qi Installation, operation, and maintenance manual
31

11 HEAT PUMP SETTINGS

11.1 Time and date

The controller features a year clock that indicates the time,
weekday and date. The time and date must be set correctly
for the heating programme to function properly.

The time is set in Regional settings 1/3 –menu.

11.4 Domestic hot water settings

The unit controls the DHW temperature according to the
time program, or constantly according to the current set
point. "Hot water temperature 1" on heat pump's menu
indicates the temperature at the bottom of the accumulator
and functions as an activating sensor for hot water
charging. The actual hot water temperature is 5-7°C
higher.

11.2 Language selection

The heat pump is delivered from the factory with Finnish
as the controller language. There are several languages to
choose from. You can change the language in Regional
settings 3/3 –menu:

Language options:

English, German, French, Italian, Dutch, Spanish,
Portuguese, Danish, Finnish, Swedish, Russian

11.3 Time programme settings

Various time programmes are available for the heating
circuits and domestic water production. They are enabled
in the “Automatic” mode and control the switching
between the temperature levels (and the related set points)
according to the set activation times.

The activation times can be set as combinations for
multiple days or separately for individual days. The
process of configuring the time programmes can be
accelerated considerably by selecting groups of days, such
as Mon...Fri and Sat...Sun, for which the same activation
times will be used.

Time programmes are set in the end user Time program –
menu.

Legionella function

The controller has an elaborately adjustable legionella
function, which prevents the growth of legionella in the
accumulator. The function is programmed ON as a factory
setting on Mondays at 5 a.m. The setting can be changed
at the Expert -level.

Menu: Domestic hot water, pages 2, 3 and 4

Periodically

The legionella function is repeated according to the
interval set (1641).

Fixed weekday

The legionella function can be activated on a fixed
weekday (1642). When using this setting, heating up to
the legionella set point takes place on the selected
weekday, independent of previous temperatures of the
accumulator.

Legionella function set point (1645)

Factory setting: 55°C

NOTE! Temperature at the bottom of the accumulator!

32 v3-8 23052017

p

p

p

Legionella function circulation pump (1647)

If a DHW circulation pump is connected it can be
activated during the period of time the legionella
function is performed.

Factory setting: OFF

Domestic hot water circulation pump

A time programme can be defined for DHW circulation
pump or the pump can follow the time programme 4 set
on domestic hot water. If you want to use these functions,
the circulation pump is to be connected to the control
automation.

The control mode of circulation pump is changed in

Domestic hot water –menu.

Controlling the hot water circulation pump

With this setting you can define the function of hot water
circulation pump.

commissioning has to be done on the controller. The
commissioning of the heating circuits must be carried out
at the Expert –level in Configuration –menu.

The control rows of the third heating circuit will not be
displayed until the additional module AVS75.390 has
been connected to the controller (accessory).

Menu: Expert → Parameter list
Configuration → 1/43 → 5710 Heating circuit 1
Configuration → 2/43 → 5715 Heating circuit 2

Row
number

5710 Heating circuit 1 (HC1) On

5715 Heating circuit 2 (HC2) Off

Control row Factory setting

Set points of operating modes

Row number Control row Factory setting

HC1 HC2

700 1000
710 1010
712 1012

714 1014

Operating
mode
Comfort set

oint

Reduced set

oint
Frost
protection set

oint

Automatic

20,0
18,0

10,0

Room temperature

Factory setting: DHW release
Domestic hot water release (1660)

The circulation pump runs when DHW heating is released.

Time programme 4 / DHW, FACTORY SETTING

The circulation pump follows the time program 4. In this
case, the circulation pump is switched on (ON) when time
programme is released and off (OFF) when the time
programme is not released.

2373Z24

0 6121824

h

11.5 Settings for heating functions

Various functions are available for the heating circuits
(Heating areas), which can be set for each circuit
individually.

Commissioning of the heating circuits

The first circuit of the heat pump is the internal circuit of
the pump. Heating circu it 1 is on as a factory setting. If
the system is installed with a mixing heating circuit, the

The room temperature can be adjusted according to
various set points. These values are activated in
accordance with the selected operating mode and,
therefore, generate different temperature levels in the
rooms.

The setting ranges of the set points are formed based on
their mutual dependence. This is indicated in the
following diagram:

TRKmax Maximum comfort set point
TRK Comfort operation set point
TRR Reduced set point
TRF Frost protection set point

Frost protection

Gebwell Qi Installation, operation, and maintenance manual
33

Protection operation automatically prevents the room
temperature from dropping too low. The temperature is at
the level defined by the frost protection set point.

automatically without the user having the turn the heating
on or off. The annual periods can be shortened or
lengthened by changing the set values.

Heating curve slope

The heating curve is used to calculate the set point for
the supply water temperature, which is used to adjust
the temperature according to the current weather
conditions. The heating curve can be changed with a

variety of settings so as to match the heating power and
room temperature to specific individual needs.

Menu: Expert → Parameter list
Heating circuit 1 → 2/13 → 720
Heating circuit 2 → 2/13 → 1020
Factory setting: 0,5

The greater the slope of the heating curve, the more the
supply water temperature changes as the outdoor
temperature drops. In other words, if the room
temperature is incorrect at low outdoor temperatures, but
correct at higher temperatures, the inclination must be
changed.

Increasing the setting:

Increases the supply water temperature particularly at
low outdoor temperatures.

Reducing the setting:

Reduces the supply water temperature particularly at
high outdoor temperatures.

The heating curve setting is based on a room temperature
of 20°C. If the room temperature set point is changed, the
heating curve is changed automatically according to the
new value. The factory setting for the heating curve is 0.5
(underfloor heating).

°C

100

90

80

70

60

50

40

30

20 10 0 -10 -20

4

End user can make small adjustments on the curve during
the first heating season. This is instructed in the user
interface quick guide.

3

3,5

2,75 2,5 2,25

-30

2

1,75

1,5

1,25

1

0,75

0,5

0,25

°C

Increase: Winter operation begins earlier

Summer operation begins later

Reduction: Winter operation begins later

Summer operation begins earlier

NOTE! In case there are heating areas that one wishes
not to deactivate during summers (damp spaces), the
heating limit of that particular circuit is to be set not in
use (---).

Summer/winter heating limit follows the “damped
outdoor temperature”. Damped outdoor temperature is
average temperature of 15 hours

Menu: Expert → Parameter list
Heating circuit 1 → 3/13 → 730
Heating circuit 2 → 3/13 → 1030

Setting the supply water temperature limits

This setting defines the limit values for the supply water
temperature set point range. If the supply water
temperature set point requested by the heating circuit
reaches the corresponding limit value, the set point
remains at the maximum or minimum limit as the heat
demand increases or decreases.

If the building features underfloor heating, it is important
to set the maximum and minimum temperatures for the
output line. If the building has underfloor heating and a
parquet floor, the supply water temperature must not
exceed the floor manufacturer’s recommendations.

Menu: Expert→ Parameter list
Heating circuit 1 → 4/13 → 740 (min), 741 (max)
Heating circuit 2 → 4/13 → 1040 / 1041

Heating system, supply water minimum temperature:

Adjustment range: 8-45°C

Factory setting: 12°C

Heating system, supply water maximum temperature

Adjustment range: 12-95°C

2000D02

Factory setting: 45°C

Separate minimum and maximum set points must be
determined for each heating circuit.

Summer/winter heating limit

The summer/winter heating limit activates or deactivates
the heating according to annual temperature differences.
In automatic operation, this switch is performed

34 v3-8 23052017

NOTE! When using a pump mixing circuit (not mixing
valve), the maximum set point is to be set in menu
Parameter list → Heating pump → 11/23 → 2855
”Maximum switch-of-temperature heating”. As flow
sensor B21 measurement reaches the value set on 2855,
the compressor comes to a halt.

NOTE!! The minimum set point for the supply water can
be increased if the building’s underfloor heating is
intended to be on in summertime. For this feature, you
must take the “Summer/winter heating limit” into
account.

The room sensor effect

If a room sensor is installed with the heat pump, the
compensatory effect can be adjusted on this control row.

Row number Control row

HC1 HC2

750 1050 Room effect 20%

Factory

setting

Menu: Heat Pump

The heat supply pump speed

The heat supply pump speed settings are not to be made
any changes to, unless the heating network requires it. If
you have a radiator network, the network flow can be too
high, resulting to cause sound in the network. In this case
the minimum pump speed should be lowered. The table
below shows the allowed setting ranges.

The heat supply pump runs within the scope of the
minimum and maximum speed, keeping the temperature
difference in the condenser at the right level.

During the heating season when the compressor is off, the
heat supply pump runs at the set minimum speed.

Electrical resistance control being enabled, the heat
supply pump runs at the maximum speed.

Row
number

2792

Control row

Pump speed
minimum

Factory
setting

60% 40-60%

Allowed
control
range

Setting Compensatory way

--- Plain outdoor temperature compensation

1…99%

100% Plain room influence

Outdoor temperature compensation and
room effect

2793

Pump speed
maximum

100% 80-100%

Plain outdoor temperature compensation:

The supply water temperature is calculated via the heating
curve of the outdoor temperature. This compensation
requires that the heating curve is set correctly.

Outdoor temperature and room effect:

The system measures the room temperature deviation
from a set point and takes it into account in temperature
control. This way the free-heat can be taken into account
and a more accurate room temperature control can be
achieved.

Plain room effect:

The supply water temperature is set according to the room
temperature set point, the current room temperature and
the changes in the room temperature. For example, a small
rise in the room temperature immediately results in
lowering the supply water temperature.

Return water switching differential

With this set point the values of the heat pump start-up
limits are defined in return water controlled system. By
return water controlled system is meant a facility where
there are no heating accumulator measurements.

The compressor switches on and off according to the
return water temperature (B71) and the return water
temperature switching differential.

• By increasing the set point, the compressor runs
for a longer operating period in heating mode.

• By lowering the set point, the compressor runs
for a shorter operating period in heating mode.

11.6 Settings for the compressor functions

NOTE! This menu may only be used to change the
control rows advised in this manual. Changing the
other values may cause incorrect functions resulting in
equipment malfunction.

Gebwell Qi Installation, operation, and maintenance manual
35

Factory setting: 6°C

Allowed adjustment range: 4 - 20°C

11.7 Settings for the electric resistor (SV1)

The electrical resistor of the heat pump operates in 2
phases according to factory settings. 2-phase resistance
means that two resistors with different power operate at
different times. If more resistor power is needed, the
power can be increased to 3-phase. The fuses of the
building and the heat pump must be selected according to
the heat pump’s maximum current. The maximum
currents are given in the technical information section of
the manual. In the event of failure, the heat pump uses an
electrical resistor as well as in partial ground source
heating systems alongside a compressor.

Resistor phase 1: 3 kW

Resistor phase 2: 6 kW

Resistor phase 3: 9 kW (requires a change in settings)

2840 Return temperature switching difference

OFF Switching off point

ON Switching on point

TRLw Return water temperature set point

K Compressor

Once the return water temperature rises above set point by
a half of switching differential, the compressor comes to a
halt. Once the return water temperature drops below the
set point by a half of switching differential, the controller
will turn on the compressor.

If return water temperature drops below 30°C, the
switching differential is reduced so that switching on point
comes closer to set point. Return water set point being
20°C the switching on point is the same as return water set
point.

11.8 Electric resistor’s operating method

(SV1)

Set in factory settings, the electrical resistor (SV1)
operates alongside the compressor in heating and
producing domestic water. This means that if the
compressor cannot generate enough power to heat
domestic water for the building, the electrical resistor will
be turned on automatically.

The electrical resistor is turned on and off depending on
the temperature and set value of the return water. If the
return water temperature is lower than the set value by one
half of the switching differential (factory setting for the
switching differential: 6 degrees), the controller will start
to count down the prevention time for releasing the
electrical resistor. When the prevention time has ended,
the controller will calculate the heat deficit by degree
minutes. When the degree minute time has ended, the
controller will switch on the first resistor phase. After this,
the controller will start to count the heat deficit again if
the resistor has not raised the return water temperature up
to the range between the switching differential. If the
release time expires, resistor phase 1 (3 kW) will turn off
and resistor phase 2 (6 kW) will turn on. When the return
water reaches the switching differential range (set value
+- ½ of the switching differential), the controller will turn
off the electrical resistors.

The settings for starting the electrical resistor can be
changed via the menu Heat pump > Control rows 2881-

2840 Return temperature switching difference

TRLw Return water temperature set point

T Heat pump return water temperature

OFF Switching off point

ON Switching on point

Ta Outdoor temperature

36 v3-8 23052017

2884.
Settings are defined at the “Expert” -level.

Substitute: The electric resistor (SV1) is only used in
failure situations.

Complem operation HC: The electric resistor (SV1) is
used to supplement the compressor in heating use.

Complem operation DHW: The electric resistor (SV1)
is used to supplement the compressor in DHW use.

Complem operation HC+DHW (factory setting): The
electric resistor (SV1) is used to supplement the
compressor in both heating and DHW use.

End DHW charging: NOT IN USE

Emergency operation: NOT IN USE

Legionella function: NOT IN USE

Electric supply water prevention time (2881)

The electric resistor (SV1) is allowed to start no earlier
than the prevention time set with this parameter has
elapsed from the activation of the compressor (K1).

The prevention time is taken into consideration only when
the electric resistor (SV1) is used at setting “Supplement
to heat pump operation” (2880). If the setting of the
electric heating is set to “Replacement”, the prevention
time is not taken into account.

Adjustment range: 0 - 255min

Factory setting: 30min

Electric supply water release integral

When the two- or three-step setting for the flow-through
resistor is used, the steps are released in accordance with
the release and return integral (2882 and 2883).

Adjustment range: 0 - 500°C min

Factory setting: 200°C min

Verd1

K25

K26

Tw

1
0
1

0
1

0

2881

SD TRL

2882

Tx

2882 2882

t

SD TRL Return water temperature’s connection
difference
Verd1 Compressor 1
K25 Flow-through resistor relay K25
K26 Flow-through resistor relay K26
Tw Temperature set point (activation point)
Tx Temperature’s actual value
2881 Electric supply water prevention time
2882 Electric heater’s release integral
T Time

Electric supply water return integral

If the actual value is higher than the activation point, the
controller switches the most recently activated
(controlling) step off and begins to form a release integral
based on the potential heat excess.
Then, once the heat excess reaches the set release integral
(2883), the lower step is switched off.
For a new release, the release integral must be met again.

Adjustment range: 0 - 500°C min

Factory setting: 10°C min

Electric supply water free ET under

This setting is taken into account only when the flow­through resistor (SV1) is used at setting “Supplement to
heat pump operation” (2880). At the “Replacement”
setting, the electric heater is always released.

The flow-through resistor is only released when the
damped outdoor temperature is below the temperature set
here.

Adjustment range: (---)** -30 - +30°C min

Factory setting: ---

** No release temperature defined

Gebwell Qi Installation, operation, and maintenance manual
37

12 HEAT PUMP OPERATION

Alarm

Alarm acknowledment/requires
maintenance

Notification

Manual

Usage rights (1-3)

Heat source in process (e.g. oil/gas
burner, heat pump...)

12.1 Navigating in the menu

Turn the navigation roller → Select a symbol in

navigation menu. Selected symbol features a
dark background in the menu.

Press the navigation roller → Select desired

icon. First page of this menu is displayed on
screen.

Go back to main menu from arrow symbol.

The icons on the menu feature the following operation
modes:

• Unselected: Icon is displayed normally, black
on white background

• Selected: Icon is bordered (with a frame)

• Modified: Icon is displayed white on black

background

12.2 Symbols

Rights, user and expert levels:

*For experts only, maintenance companies,
requires a password:

Home, property details

Temperatures, heating/cooling

Domestic hot water settings

Info pages:

• Notifications (alarms,
events)

• Property details

• Energy monitoring

Service/settings:

• Setting changes

• Special settings

• *Expert menu

Diagnostics pages

Settings/maintenance:

• Access to all parameters

12.3 Setting the heating

The setting of room temperature is performed in

“Temperatures” - menu.

Operating mode:

Automatic operation: Recommended mode

Automatic operation automatically sees to that the best
possible setting is always on (e.g. summer/winter settings)

You can change the setting to continuous protective,
comfort or reduced operation by pressing the navigation
roller while desired operation mode is selected.

Protective operation

The controller drops the property set point down to
protective level. (factory setting 15°C)

Comfort operation

The controller follows the comfort set point in heating
regardless of the time. The controller does not regard the
summer shut-off function while in comfort operation.

Reduced operation

The controller follows the reduced set point in haeting
regardless of the time. The controller does not regard the
summer shut-off function while in comfort operation.

The heating operation set points can be changed in
“Service/settings” -menu.

38 v3-8 23052017

Setting the room temperature manually

Room temperature change means changing the Comfort
set point value.

Press the navigation roller on desired set point and roll a
new value. Accept by pressing the roller.

• By increasing the value, the room temperature
rises.

• By decreasing the value, the room temperature
drops.

One degree change corresponds to approximately one
degree in room temperature.

NOTE! Floor heating or radiator heating thermostats
may limit the room temperature rise, so that they must also
be adjusted higher.

Time program:

Use time program to drop the temperature when you are
away from home, on vacation or for nighttime drop, for
example. The time program only functions on Automatic
operation mode.

In case you want to use automatic operation mode, but
want the temperature to stay at comfort level regardless of
the time, make a change on the time program.

Press navigation roller on Time program.
Adjust the time program. If you want all the weekdays to

follow the same time program, use the copy function.
When time program is ON, the controller follows Comfort

set point in heating. When time program is OFF, the
controller follows the Reduced set point.

Area specific room temperature adjustment
(temporary):

Readjusting the default settings

If the desired room temperature is not obtained, it is
necessary to re-adjust.

Cold weather:

- If the room temperature is too low,
increase the heating curve slope value.

- If the room temperature is too high,
decrease the heating curve slope value.

Warm weather:

- If the room temperature is too low, turn
the roller to Comfort set point, heating
clockwise 0.5°C, and press the OK
button.

- If the room temperature is too high, turn
the roller to Comfort set point, heating
counter-clockwise to 0.5°C, and press the
OK button.

NOTE! Wait one day between settings so that
temperatures have time to settle down.

The room-specific thermostats must be in the OPEN
position when you adjust the room temperature to the
desired value. If a thermostat is in the control range, it may
cause unnecessary consumption of electricity.

Use “Heating” setting to adjust area specific room
temperature temporarily (circuit specific).

The controller will rise the temperature of the selected
heating area (circuit) by one degree. The device will return
to normal state once the set point is reached or time
program is changed.

12.4 Setting domestic water heating

The heat pump produces hot water by using change-over
valve. The change-over valve turns the water flow to hot
water accumulator, when the heat is not loaded to the
heating system of the house.

Gebwell Qi Installation, operation, and maintenance manual
39

The hot water accumulator's water temperature varies
between the values set (nominal set point - switching
differential 5°C).

Domestic hot water temperature is set on “Domestic hot
water” -menu

Factory setting: 50°C

Domestic water heating can be activated and deactivated
on Operating mode.

When operating mode is ON the water is heated according
to the selected set point. When operating mode is OFF, hot
water charging is not on.

Other displays:

- Heating circuit 1 status

- Heating circuit 2 status

- Outdoor temperature

- Room set point 1

- Supply water set point 1

- Room set point 2

- Supply water temperature 2

- Supply water set point 2

12.6 Special operations

Resetting heat pump alarms:

Resetting the heat pump will acknowledge alarms and
reset the system back to activation state.

Preset activation delays is not regarded in order to avoid
unwanted waiting periods during commissioning or
troubleshooting.

The charging of hot domestic water can be activated by
setting Temporary to Recharging. This action activates
charging and loads the domestic water to set value.

12.5 Heating system tracking

On Info -menu you can see information related to the
system, heating areas, domestic hot water and energy
monitoring.

By selecting display’s -icon you are able to read the
current processes. In case of a failure, the user terminal
will be the first to tell the cause. On Info –menu you can
see the system status, set points for heating circuits and
temperatures.

By changing the Reset HP value from No to Yes, the
alarms will be acknowledged and the system will start
again once heating request is activates. If the alarm recurs,
see the corrective measures in FAILURES.

Service / special operation (spare use)

By service / special operation function the heat pump can
be set on an “emergency” mode. In emergency mode the
heat pump functions with electric immersion heaters and
the compressor will not start. This enables the use of the
heat pump before connection of the heat collector.

If heat pump does not function correctly, emergency
function can be activated.

Please make sure the following points are taken into
account before activating the emergency function

• DHW accumulator is filled up

• Heating circuit is filled up and vented

Displays:

• Any failure notifications from the failure code
list

• Any maintenance notifications from the
maintenance code list

• Any notifications regarding special states

40 v3-8 23052017

• DHW accumulator’s (LVV1) outer housing has
been vented

• Control fuse F10 is on.

• The circuit breaker F3 for the source and heat

supply pumps is on. (ON)

• Flow-through resistor’s fuse F2 on. (ON)

The alarm and service symbols will appear on the display.

Emergency operation can be deactivated by selecting
status OFF on Emergency operation menu.

12.7 The heat pump's measurements

The heat pump measurements can be found in the Info –
menu.

Comprehensive measurement menus you can get by
logging into the controller at the Expert level. Source ­menu allows you to read the following status and
temperature information.

Row
number

Control row

Unit /
state

8428 Source internal temperature minimum °C

8429 Source outgoing temperature °C

8430 Source outgoing temperature minimum °C

8440 Port 1 min idle time remaining min

8442 Port 1 min running time remaining min

8450 Compressor 1 running times h

8451 Compressor 1 start-up counter pc

8456

8457

The running hours of the electric heater
of supply water

Start-up counter of the electric heater
of supply water

h

pc

* Not in use as a factory setting

** NO FUNCTION = The function is not on
While at Expert –level you can read the following

information on Consumer –menu:

Row
number

8700 Outdoor temperature °C

Control row

Unit /
status

8400 Compressor 1 on / off

8402 Supply water electric heater 1

8403 Supply water electric heater 2 on / off

8404 Source pump on / off

8405 Source pump speed %

8406 Condenser pump on / off

8407 Condenser pump speed %

8410

8410 Heat pump set point °C

8412 Heat pump supply water temperature °C

8412 Heat pump set point °C

8415 Hot gas temperature °C

8425 Condenser temperature difference °C

8426 Evaporator temperature difference °C

8427 Source incoming temperature °C

Heat pump’s returning water
temperature

on / off

*

°C

8701 Minimum outdoor temperature °C

8702 Maximum outdoor temperature °C

8703 Damped outdoor temperature °C

8704 Composite outdoor temperature °C

8730 ­8735

8740 Room temperature 1 °C

8740 Room temperature set point1 °C

8743 Supply water temperature 1 --- **

8743 Supply water set point 1 °C

8770 Room temperature 2 °C

8770 Room set point 2 °C

8773 Supply water temperature 2 °C

8773 Supply water set point 2 °C

8830 Domestic water temperature 1 °C

8832 Domestic water temperature 2 --- *

Actuators of heating circuit 1 *

Gebwell Qi Installation, operation, and maintenance manual
41

8840

8841

Running hours of domestic water
pump

The start-up counter of domestic
water pump

h

pc

Maintenance or deviating behaviour

If this symbol appears on the display, the device has issued
a maintenance notification or is operating in an abnormal
way. Press the info button to view additional information.

* Not in use on Qi heat pump

** Supply water temperature 1 is not in use. The
temperature of the heating circuit can be seen on control
row 8412 when system is in heating mode. When charging
the domestic hot water the supply water temperature is not
displayed.

12.8 Vocabulary

Condenser pump = Ground source heat pump's in-built
heat supply pump (charging pump)

Condenser = Heat exchanger, which transfers the heat
from refrigerant to property's heating system

Evaporator = Heat exchanger, which transfers heat from
the collector to refrigerant

Source = Collector (energy well, lake loop, loop dug in
the soil)

The Port. 1 minimum idle time = Controller is defined
with the minimum compressor idle time, when the
compressor is off before the next start-up, if the heat call
is active.

The Port. 1 running time = The controller is defined with
the minimum compressor running time, during which the
compressor runs, even though the set point is reached.

The composite outside temperature = The average
between the damped outdoor temperature and the current
outdoor temperature.

Damped outdoor temperature = The average temperature
defined on the control row Time constant building.

The supply water electric heater = Electric resistor

12.9 Heat pump status information

The heat pump operating status can be seen from the
operating terminal. On the basic view of the operating
terminal displays the Heat pump status. If the heat pump
is connected to the room sensor, the operating terminal
displays the current indoor temperature. All the status
information displaying on the display are not alerts. You
can browse heat pump status information and historical
data at the Expert level in Mode or Info –menu.

12.10 Special situations

In exceptional situation, the display of the basic unit
shows one of the following symbols.

Failure notifications

If this symbol appears on the display, the device is
suffering from a failure. Press the info button to view
additional information.

12.11 Heat pump status

The heat pump status will tell the current operation status
of the heat pump.

HEAT PUMP STATUS:

OFF: The heat pump is turned on, but the call for heating
is not active

STOP: The heat pump is turned on, but the call for heating
is not active. A newer language version.

HEATING: The call for heating is active and the
compressor is on. Compressor is heating the property or
hot water.

LIMITATION OF ACTIVE TIME: Call for heating is on,
but the compressor minimum idle time prevents the
compressor from starting. The compressor starts after the
minimum idle time has expired.

EMERGENCY USE: The heat pump has gone to
emergency use operating mode due to malfunction or the
heat pump has been set to emergency use operating mode.
The heat pump heats the property with the electric heaters.
The operating terminal displays alarm clock symbol.

OFF THE MAXIMUM LIMIT: Call for heating is active,
but the compressor charging is interrupted as the supply
water has reached the maximum set point limit. The
charging process starts again after the minimum idle time.

COMPRESSOR LOCKED: The compressor is locked due
to too high or too low temperature of the collector or
charging circuit. The compressor will return to normal
mode once the temperatures return to the correct
temperature range.

PASSIVE COOLING USE: The heat pump is switched to
cooling mode. Source pump is running. The compressor
is not used for passive cooling.

12.12 Heating circuit status information

Heating circuit status indicates the current status of the
heating circuit operation.

COMFORT HEATING: The heating circuit operates
according to Comfort set point.

REDUCED HEATING: The heating circuit operates
according to reduced set point.

PROTECTIVE USE: The heating circuit operates
according to Protective set point.

HEATING LIMITED USE: The heating circuit is limited
during hot water charging. Heating circuit returns to the
set heating operation mode after the domestic hot water
charging is complete.

42 v3-8 23052017

SUMMER USE: The heating circuit is switched off due
to summer operation mode. Heating circuit returns to the
set heating mode as the damped outdoor temperature
drops below the summer / winter heating limit.

OFF: The heating circuit is turned off.

12.13 Domestic hot water status information

CHARGED: Hot water is charged to nominal value.

CONSUMPTION: Hot water function is active. An
electric control valve is connected to hot domestic water
or the hot domestic water is produced in a heat exchanger.

CHARGING ACTIVE: The heat pump produces hot
water.

ELECTRIC HEATER CHARGING: Hot domestic water
charging is active with the help of electric heater.

Gebwell Qi Installation, operation, and maintenance manual
43

13 MAINTAINING AND

SERVICING THE GSHP

In order to ensure your heat pump’s long service life and
uninterrupted operation, the following inspections must
be conducted a few times a year, and more frequently
during the first year. Remember to also maintain and
inspect the accessories in accordance with their
instructions.

13.1 Maintenance notice

Maintenance functions can be used as a method of early
prevention on periodical control. To make it easier to
remember the equipment maintenance, the controller can
be programmed to give a maintenance notice.
Maintenance notice will appear on the display of the
controller on selected intervals, disappears by pressing the
Reset button.

This operation is carried out at the "Expert " level:

General appearance and leaks

Check the interior and exterior of the ground source heat
pump for liquid leaks, oil and other deviations from
normal operation. The safety valves expel some water due
to pressure changes as part of their normal operation.

Liquid level and strainers of the collector

Check the liquid level of the collector and add more
liquid if necessary. After commissioning, it may be
necessary to add liquid over the course of a few days.
Having to add a few litres is normal. If the liquid level is
too low, allow the pump to run normally, open the
admission valve and fill the tank with heat transfer liquid.
If you need to repeatedly add liquid, contact an
installation or maintenance company. The liquid level in
the tank should drop slightly when the pump is activated
and rise when the pump is stopped. Diverging behaviour
is a sign of air, incorrect circulation direction or a blocked
strainer.

In case you want the system to also notify the maintenance
company contact info, you can program them on the
controller.

13.2 Inspections

The plug (PT) must be disconnected from the socket
during maintenance.

NOTE! The refrigerant circuit must only be
maintained by an authorised refrigerating equipment
technician.

Check and clean the collector strainer. The strainer
should be checked several times immediately after
commissioning. However, avoid unnecessary opening of
the collector.

Checking the safety valves

Check the operation of the valves twice a year by turning
the cap. Ensure that water comes out of the overflow pipe.

13.3 Draining the hot water accumulator

(LVV1)

The hot water accumulator (LVV1) is drained according
to the siphon principle. A drain valve is installed on the
cold water line or alternatively, a hose is inserted in the
cold water connection.

13.4 Draining the heating system

Draining heating water from the compressor
unit

If the compressor unit requires maintenance, the unit’s
heating system must be drained as follows:

• Close shut-off valves VS1 and VS2

• Connect a hose to drain valve VT1 in the lower

connection of the condenser

• Loosen the connection of shut-off valve VS1 so
that some air can enter the system

44 v3-8 23052017

Draining the heating water of the heat pump

If the heat pump requires maintenance, the pump’s heating
system must be drained as follows:

• Close the shut-off valves of the heat pump’s
heating system

• Connect a hose to drain valve VT1 in the lower
connection of the condenser

• Loosen the connection of shut-off valve VS1
between the heat pump and heating system so
that some air can enter the system

Draining the entire heating system

The entire heating system can be drained as follows:

• Connect a hose to drain valve VT1 in the lower
connection of the condenser

• Open the venting screw at the highest point of the
building’s heating system

13.5 Draining the collector

Draining the compressor unit’s collector

If the compressor unit requires maintenance, the unit’s
collection circuit must be drained as follows:

• Close shut-off valves VS3 and VS4

• Connect a hose to drain valve VT2 in the lower

connection of the evaporator

• Loosen the connection of shut-off valve VS3 so
that some air can enter the system

Draining the heat pump’s collector

If the heat pump requires maintenance, the pump’s
collection circuit must be drained as follows:

• Close the shut-off valves of the heat pump’s
collector

• Connect a hose to drain valve VT2 in the lower
connection of the evaporator

• Loosen the connection of shut-off valve VS1
between the heat pump and collector so that
some air can enter the system

Gebwell Qi Installation, operation, and maintenance manual
45

14 FAILURES

In most cases, the controller detects a malfunction of the
heating system and indicates this with a failure
notification appearing on the display. When failure
notification displays on the display, record the alert
exactly to the service book to facilitate the maintenance
operations

14.1 Alerts

• Valves closed between the accumulator and the
heating circuit

o Open the valves

• External switch for the room temperature drop
activated

o Check any external switches

Room temperature too high:

• Heating circuit setting values are too high

When the alert is active, the symbol appears on the
heat pump's display.

You can get more information on the by pressing the Info
button. Always try first to find out for yourself the
malfunction with the help of the trouble shooting table. If
you cannot detect the malfunction, contact a qualified
technician.

14.2 Troubleshooting

If failures are not displayed on the screen, follow the
instructions below.

Basic measures:

1 Check all switches

2 Inspect the house as well as the heat pump fuses

3 Check the fault current circuit breaker

Room temperature too low:

• Heat pump in incorrect operating mode

o Set the heat pump heating functions into

the right mode.

• Thermostats of radiators / floor heating are
switched off

o Turn on the thermostats in so many rooms

as possible

o Adjust the room temperature on the menu

Heating area instead of switching off the
thermostats

• The automatic set point is too low:

o Raise the Comfort set point on the menu

Heating area

o Increase the heating curve slope set point

on the menu Heating area

o Set the maximum supply water set point

sufficiently high on the menu Heating
area

• Program for heating circuit is switched on

o Go to menu Time program heatin g area

and adjust the time program to wanted
level

o If the room temperature is too high only

in cold weather, decrease the heating
curve slope.

o If the room temperature is too high on

warm weather, decrease comfort set
point.

Domestic hot water too cold:

• Domestic hot water function is not active

o Set domestic hot water Operating mode

to ON

• Domestic hot water consumption is too high

o Wait until the water has warmed up.

Temporarily at beginning of the higher
consumption, you can choose the forced
charging of domestic hot water by
pressing the terminal's domestic water
button for 3 seconds.

• Set point too low

o Go to menu Domestic hot water and

increase the set point for domestic hot
water

• The feed mixing valve adjusted too low

o Ope

The compressor will not start:

• No need for heat

o Check heat pump’s status on the Menu

• Compressor minimum idle time is active

o Wait for 20 minutes and check if the

• Heat pump failure

o Check Info menu for the reason for the

n the valve

Info

compressor will start

failure and make the adjustments
needed according to the trouble
shooting table.

Soft starter failure notification

Failure in soft starter shows as Soft starter E25 failure
notification on controller's display. The amount of flashes
of the red LED light on soft starter indicates the failure.

• Air in the heating system

o Vent the heating system

46 v3-8 23052017

NOTE! If the soft starter function is Reboot 5min from
disorder, do not reset the alarm of the heat pump. This will

cause a new malfunction and the compressor will not start.

Soft starter

Number of

flashes, red

LED

2 Incorrect phase sequence Changing the phase sequence

3 Incorrect voltage Automatic restart 5 min after the failure

4 Incorrect frequency Automatic restart 5 min after the failure

5 Rotor is not spinning Automatic restart 5 min after the failure

6 Start time > 1 s Automatic restart 5 min after the failure

7 Overheating Automatic restart 5 min after the failure

8 Over current after start-up Automatic restart 5 min after the failure

9 Asymmetrical input voltage Automatic restart 5 min after the failure, if all phases are connected

Failure Operation

Gebwell Qi Installation, operation, and maintenance manual
47

p

14.3 Troubleshooting table

No: Failure message Sensor Description Cause Measure Measure

Check that the connecter

10: Outdoor sensor B9

31: Supply water sensor
cooling 1

32: Supply water sensor 2 B12

B16

The outdoor sensor is damaged
or it is not connected.

The supply water sensor for
cooling is damaged.

The mixed heating circuit sensor
is damaged.

Failure in the electrical
system

Failure in the electrical
system

Failure in the electrical
system

Contact a qualified
technician.

Contact a qualified
technician.

Contact a qualified
technician.

is intact and correctly
connected. If necessary,
contact Gebwell service.

Check that the connecter
is intact and correctly
connected. If necessary,
contact Gebwell service.

Check that the connecter
is intact and correctly
connected. If necessary,
contact Gebwell service.

33: Heat pump supply water
sensor

35: Source input sensor B91

36: Hot gas sensor 1 B81 Hot gas sensor is damaged.

44: Heat pump return water
sensor

45: Source outlet sensor B92

50: Domestic water sensor
1

The heat pump's flow sensor is

B21

damaged.

The inlet sensor in the heat

ump's collection circuit is

damaged.

The sensor in the heat pump's

B71

return water is damaged.

The outlet sensor in the
collection loop is damaged.

The hot water sensor is

B3

damaged.

Failure in the electrical
system

Failure in the electrical
system

Failure in the electrical
system

Failure in the electrical
system

Failure in the electrical
system

Failure in the electrical
system

Contact a qualified
technician.

Contact a qualified
technician.

Contact a qualified
technician.

Contact a qualified
technician.

Contact a qualified
technician.

Contact a qualified
technician.

Check that the connecter
is intact and correctly
connected. If necessary,
contact Gebwell service.

Check that the connecter
is intact and correctly
connected. If necessary,
contact Gebwell service.

Check that the connecter
is intact and correctly
connected. If necessary,
contact Gebwell service.

Check that the connecter
is intact and correctly
connected. If necessary,
contact Gebwell service.

Check that the connecter
is intact and correctly
connected. If necessary,
contact Gebwell service.

Check that the connecter
is intact and correctly
connected. If necessary,
contact Gebwell service.

Check that the room

60: Room sensor 1 The room sensor is damaged.

98: Extra module 1

The controller cannot detect the
extra module 1 from the
channel.

Failure in the electrical
system

Failure in the electrical
system

Contact a qualified
technician.

Contact a qualified
technician.

sensor is connected and
not externally damaged.
If necessary contact a
qualified technician.

Check the fastening of
the flat cable between
controllers. Check that
the extra module is
connected to power
supply (green light).

48 v3-8 23052017

p

p

p

p

p

No: Failure message Sensor Description Cause Measure Measure

Check the fastening of
the flat cable between
controllers. Check that
the extra module is
connected to power
supply (green light).

99: Extra module 2

The controller cannot detect the
extra module 2 from the
channel.

Failure in the electrical
system

Contact a qualified
technician.

102: Clock not running
reserve

105: Maintenance
notification

106: Source temp too low

107: Hot gas, compr. 1

127: Legionella temperature

174:
Malfunctions and alarm
messages

The electrical resistor’s

The battery on the controller’s
operating monitor is running
out.

A maintenance notice is

rogrammed on the controller.

The incoming temperature from
the collector is lower than set in
the menu. The controller will
restore the situation
automatically in 4 hours.

Alarm goes off, when hot gas
sensor shows 130°C. 3 alarms

er 8 hours are allowed with

automatic restoring.

The heat pump has not been able
to maintain the requested
temperature in the legionella
function. The controller will
retry charging after minimum
idle time.

overheating protector has
tripped.

Failure in the electrical
system

Too low flow in the
collector.

Domestic hot water has
been used during raising
operation.

The resistor has overheated
due to a possible lack of
water, a circulation

roblem, or the presence of

air in the system.

Contact a qualified
technician.

Contact a qualified
technician.

Check that the shut­off valves on the
collector are open.
Check the strainer on
the collector. If
necessary contact a
qualified technician.

Contact a qualified
technician.

Check that the
pressure in the
heating system is
correct > bleed air
from the heating
system.

Check that the flat cable
is fastened properly both
to the controller and the
display.

Perform annual
maintenance of the
equipment.

Check the functioning of
the collector.

Check the functioning of
the cooling unit.

Acknowledge the alarm
using the button on the
bottom of the resistor.

Open radiator/floor
heating thermostats.
Vent the heating
network. Check the
network pressure.
Clean the strainer.
Check that the
charging pump is
running. If necessary
contact a qualified
technician.

Open radiator/floor
heating thermostats.
Vent the heating
network. Check the
network pressure.
Clean the strainer.
Check that the
charging pump is
running. If necessary
contact a qualified
technician.

Check the functioning of
the heat supply network.

Check the functioning of
the heat supply network.

222:Heat pump pressure E10

223: Heating circuit start-up
pressure

E10

High pressure switch has
tripped.

High pressure switch has tripped
in connection with the start-up
of heating.

Too low a flow in charging
/ heat supply circuit.
Radiator or floor heating
valves are shut off or set too
low. Air in the heating
system. The heating system

ressures are too low. A

clogged strainer.

Too low a flow in charging
/ heat supply circuit.
Radiator or floor heating
valves are shut off or set too
low. Air in the heating
system. The heating system

ressures are too low. A

clogged strainer.

Gebwell Qi Installation, operation, and maintenance manual
49

p

p

p

p

No: Failure message Sensor Description Cause Measure Measure

Vent the heating
network. Check the

224: Hot water start-up
pressure

High pressure switch has tripped

E10

in connection with the start-up
of domestic hot water heating.

Too low a flow in charging
circuit. Air in the heating
system. A clogged strainer.

network pressure.
Clean the strainer.
Check that the
charging pump is
running. If necessary
contact a qualified
technician.

Check the functioning of
the change-over valves.
Check the functioning of
the charging circuit.

225: Under pressure E9

226:Compressor 1 over
load

243: Swimming pool sensor B13

324: BX/extramod. same
sensors

357: Cool.circuit 1 supply
water temp.

358: Soft starter E25 Soft starter has given an alarm.

Under pressure switch has
tripped.

Compressor motor protection

E11

has tripped.

The sensors with same marking
are connected to BX entries.

The temperature of the supply
water of cooling circuit is to
low.

Too low a flow in collector.
The shut-off/balancing
valves in the collection loop
are shut off. A clogged
strainer. Too little liquid on
the collection loop. The
water in the heating system
is too cold (under 15°C)

The compressor has tripped
the motor protection.

Failure in the electrical
system

Failure in the electrical
system

The control valve is in
manual mode. Incorrectly
set value.

Heat pump motor protection
is turned off. The heat

ump's power supply

hases are reversed.
Instantaneous power failure.
Power supply is missing a

hase. The fuse is blown.

Clean the strainer on
the collector. Add
more liquid in the
collector if needed. If
necessary contact a
qualified technician.

Set compressor
motor protection (F1)
on ON-position. If
necessary contact a
qualified electrician.

Contact a qualified
technician.

Check the minimum
temperature level of
the cooling circuit.

Check that the motor
protection is on.
Change the phase
sequence on the plug.
Check that the heat
pump’s fuses are
intact. Contact a
qualified technician.

Check the functioning of
the collector. Check the
functioning of the source

ump.

Check the power supply
of the heat pump. Check
the functioning of the
compressor.

Change the correct sensor
addresses.

Overheat protector of the flow-through resistor (SV2)

The purpose of the overheat protector (SV2) is to prevent the flow-through resistor (SV1) from overheating. When the
protector trips the controller enters a failure state that must be reset manually. The reset button for the overheat protector can
be found under the flow-through resistor (SV2). The controller issues alarm code 174 “Alarm contact 4 act.”

50 v3-8 23052017

RESET FOR THE
OVERHEAT PROTECTOR
IS UNDER THE FUSE BOX

Gebwell Qi Installation, operation, and maintenance manual
51

15 TECHNICAL SPECIFICATIONS

Gebwell Qi

Power information
0/35

Heating output (kW) 5.3 7.4 9.4 13.3
Cooling capacity (kW) 4.2 5.8 7.4 10.5
Input power (kW) 1.1 1.6 2.0 2.8
COP 4.8 4.6 4.7 4.8

0/55

Heating output (kW) 4.9 6.8 8.5 12.2
Cooling capacity (kW) 3.2 4.4 5.6 8.1
Input power (kW) 1.7 2.4 2.9 4.1
COP 2.9 2.8 2.9 3.0
System’s energy efficiency class. intermediate climate

conditions. underfloor heating

Flow-through resistor

Power (kW) 3 / 6 / 9 (can be changed. factory setting 6kW)

Electrical information

Rated voltage/electrical connection

Max. supply current (incl. control systems and pumps) (A
Start-up current (A
Set point of motor protection 4.0A 5.1A 6.3A 9.2A
Max. supply current. resistance 3 kW (A) 9.2 10.4 12.3 15.0
Max. supply current. resistance 6 kW (A) 13.6 14.8 16.7 19.4
Max. supply current. resistance 9 kW (A) 17.9 19.1 21.0 23.7
Heat supply pump power (W) 70 70 87 175
Source pump power (W) 87 87 175 175

Hot water accumulator

Capacity. domestic water/heating (l) 182/7
Maximum pressure (bar) 10

Refrigerant circuit

Contains fluorinated greenhouse gases yes
Hermetically sealed yes
Refrigerant R407C
GWP (Global Warming Potential) 1774
Refrigerant volume (kg) 1.8 2.2
CO2 equivalence (tonnes, CO2e) 3.193 3.903
Cut-off. overpressure 2.8 MPa (28 bar)
Difference. overpressure 0.7 MPa (7 bar)
Cut-off. underpressure 0.17 MPa (1.7 bar)
Difference. underpressure 0.10 MPa (1.0 bar)

Ground circuit

Maximum pressure (bar) 4
Minimum flow (l/s)
Rated flow (l/s)
Max external pressure loss at rated flow (kPa)
Minimum heat collection liquid output temperature (°C) -5

Heating circuit

Maximum pressure (bar) 4
Minimum flow (l/s) 0.14 0.18 0.40 0.47
Rated flow (l/s) 0.30 0.41 0.32 0.45
Max external pressure loss at rated flow (kPa) 57 47 34 75

Dimensions and weight

Width (mm) 600
Height (mm) 1.890-1.950
Depth (mm) 680
Weight (kg) 240 250
Weight of the compressor unit (kg) 99 103 104 110
Pipe connections
Ground circuit liquid (mm) 28
Heating (mm) 22 28
Domestic hot water (mm) 22
Domestic hot water circulation (mm) 15

Cold water (mm) 22

Post-heating of ventilation (mm) 12

Sound power level (dB) 38.5 38.5 40 40

Compressor Scroll

Controller Gebwell Albatros

)

rms

)

rms

6 8 10 13

A+++

4.9 6.1 8.0 10.7

15.5 16.1 21.2 30.6

0.24

0.30
61

400VAC 3N 50Hz

0.32 0.40 0.47

0.41 0.50 0.60
48 90 74

2

52 v3-8 23052017

16 SET POINT EXAMPLES FOR HEAT PUMP ADJUSTMENTS IN

DIFFERENT HEATING NETWORKS.

Row number Control row Factory setting Underfloor

heating

LP1 LP2

710 1010 Comfort mode set point 20

712 1012 Reduced set point 19

0.5 0.5

720 1020 Heating curve slope

(0.3-0.5)

740 1040 Flow water minimum set point 12 12 12 12

45 45

741 1041 Flow water maximum set point

(35-45)

750 1050 Room sensor compensation 20 %

730 1030 Summer / winter heating limit 16

Radiator
heating

0.8

(0.5-1.0)

55

(45-60)

Air heating

Set points of the heat pump

Row number Control row Factory setting

Underfloor

heating

Radiator

heating

Air heating

0.8

(0.5-1.0)

55

(45-60)

2840 Return temperature switching 6 6

8

10

(8-10)

Gebwell Qi Installation, operation, and maintenance manual
53

y

17 MAINTENANCE RECORD

Date: Measure: *Fault code: Performed b

:

*Fault code: If the device fails. enter the fault code issued by the controller in this column.

54 v3-8 23052017

18 ENERGY LABELS

Gebwell Qi Installation, operation, and maintenance manual
55

Declaration of Conformity

We, Gebwell Ltd, hereby declare under our sole responsibility that the product

Qi
T2
Gemini
E-Flex
Taurus

to which this declaration relates is in conformity with the

LOW VOLTAGE DIRECTIVE 2006/96/EC
ELECTROMAGNETIC COMPATIBILITY DIRECTIVE 2004/108/EC

and the following harmonised standards and technical specications have been applied:

LVD: EN 61439-1:2011
EN 61439-2:2011
EN 61439-3:2012

EMCD: EN 61439-1 Annex J, Point J.9.4.2

HD: 60364 Low-voltage electrical installations
384 Electrical installations of buildings

Commission Delegated Regulation (EU) No 811/2013 on energy labelling

Products are provided with a marking of conformity.

Leppävirta 8.9.2015

Tuure Stenberg
Managing Director

This document was signed electronically

Gebwell Ltd.

Patruunapolku 5, FI-79100 Leppävirta, FINLAND
Tel. [phone], Telefax [phone]

info@gebwell. | www.gebwell.

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Gebwell Ltd.

Patruunapolku 5

FI-79100 Leppävirta

FINLAND

Business ID: 2008956-7

Tel. [phone]

Telefax [phone]

info@gebwell.

www.gebwell.com