York Geysir User manual

by johnson controls
User’s Manual
Manuel et d’utilisation
Bedienungsanleitung
Návod k obsluze
RESIDENTIAL HEAT PUMPS
GEYSIR RANGE
The units comply with one or more of the following marks - see unit for details. UG-GEYS-MU1-0209
EN DEFR CZ

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2
Table of contents
1 Important information .............................................3
1.1 Safety precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
1.2 Protection ............................................................3
2 About your heat pump .............................................4
2.1 Principles of function ...................................................4
2.2 Components..........................................................5
2.3 Outdoor and defroster function, Geysir Air ..................................6
2.4 Auxiliary heat, Geysir, Geysir with Passive cooling............................8
2.5 Auxiliary heat, Geysir Air ................................................8
2.6 Water heater, Geysir, Geysir with Passive cooling ............................9
2.7 Water heater, Geysir Air................................................10
2.8 Regulation information .................................................10
2.9 Installation principle, Geysir .............................................17
2.10 Installation principle, Geysir with Passive cooling . . . . . . . . . . . . . . . . . . . . . . . . . . . .18
2.11 Installation principle, Geysir Air ..........................................19
3 Control computer ................................................20
3.1 Display .............................................................21
3.2 Menus..............................................................24
4 Trimming the heating system ......................................32
5 Instructions ....................................................32
5.1 Setting operating mode ................................................33
5.2 Setting ROOM values .................................................33
5.3 Adjusting CURVE values ...............................................33
5.4 Adjusting a specific part of the heat curve..................................33
5.5 Setting MIN and MAX values............................................34
5.6 Setting HEATSTOP ...................................................34
5.7 Reading off temperatures...............................................34
5.8 Calculating energy consumption, Geysir, Geysir with Passive cooling ............35
5.9 Calculating energy consumption, Geysir Air ................................36
5.10 Manual defrost, Geysir Air . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .36
6 Regular checks ..................................................37
6.1 Checking operation ...................................................37
6.2 Checking the brine level................................................38
6.3 Checking the water level in the heating system..............................38
6.4 Checking the safety valve ..............................................39
6.5 In the event of leakage.................................................39
6.6 Cleaning the strainer for the heating system ................................39
6.7 Cleaning the strainer for the brine circuit...................................40
7 Accessories.....................................................41
7.1 Room temperature sensor ..............................................41
8 Troubleshooting .................................................42
8.1 Alarm ..............................................................42
9 Terms and abbreviations ..........................................44
10 Default settings in the control computer .............................45
11 References......................................................46
11.1 Installation carried out by ...............................................47

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lIf the installation is not used during the winter, the heating system must be drained of
water, otherwise there is a risk of frost damage to the installation. (Contact an authorized
installer, see the ”References” section.)
lThe installation can be considered maintenance free but certain checks are necessary
(see “Regular checks” section).
lBefore changing the control computer’s settings, first find out what these changes mean.
lContact your installer for any service work.
!This apparatus is not intended for persons (including children) with reduced physical,
sensory or psychological capacity, or who do not have knowledge or experience,
unless supervised or they have received instructions on how the apparatus functions
from a safety qualified person.
!Children are not permitted to play with the apparatus.
1.1 Safety precautions
1.1.1 Installation and maintenance
lOnly authorized installers may install, operate and carry out maintenance and repair
work on the heat pump. (See the ”References” section)
lOnly authorized electricians may modify the electrical installation. (See the ”References”
section)
!
DANGER TO LIFE! Only authorized refrigeration technicians may work on the
refrigerant circuit. (See the ”References” section).
1.1.2 System modifications
Only authorized installers may carry out modifications on the following components:
lThe heat pump unit
lThe pipes for the refrigerant, brine, water and power
lThe safety valve
You must not carry out construction installations that may affect the operational safety of the
heat pump.
1.1.3 Safety valve
The following safety precautions apply to the hot water circuit’s safety valve with correspon-
ding overflow pipe:
lNever block the connection to the safety valve’s overflow pipe.
lWater expands when it is heated, this means that a small amount of water is released
from the system via the overflow pipe. The water that exits the overflow pipe can be hot!
Therefore, allow it to flow to a floor drain where there is no risk of burning yourself.
1.2 Protection
1.2.1 Corrosion Protection
Due to the risk of corrosion, avoid using different types of sprays in the vicinity of the heat
pump. This particularly applies to:
lSolvents
lChlorinated cleaning agents
lPaints
lAdhesives
1 Important information

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2.1 Principles of function
A heat pump utilises the free energy found in a natural heat source, such as rock, ground, or
ground water. The heat pump can be compared to a reversed refrigerator. In a refrigerator, heat
is transferred from the inside of the refrigerator to the outside. In a heat pump the heat that is
stored in a heat source is transferred to the inside of the house. The heat pump uses the energy in
the heat source and gives back two to three times more heat energy than what it uses in electrical
energy. The heat pump is, therefore, a very environmentally friendly and economical way of
heating a house.
In order for the heat pump to be able to retrieve heating energy from the heat source and transfer
it to the heating system of the house, three separate fluid circuits are required.
The circuit that retrieves the heating energy from the heat source is called the brine circuit
and it maintains a low outgoing temperature to be heated by the heat source.
The next circuit is called the refrigerant circuit and is a closed circuit which takes the retrieves
heating energy and transfers it to the last circuit, the heat transfer fluid circuit.
The heat transfer fluid circuit holds the fluid that circulates in the heating system of the house
and in the heat pump’s water heater.
The figure below shows how the different circuits work together in the transfer of heating
energy.
Figure 1: Function principles of a heat pump.
Q A fluid (brine) filled hose is lowered into a lake, buried in the ground or lowered into bedrock. The brine
obtains energy from the heat source by the fluid temperature in the hose being heated a few degrees by
the surrounding heat source. The fluid filled hose is also known as a collector.
2 About your heat pump
Expansion valve/
pressure drop
Enclosed
refrigerant
Compressor/
pressure increasing
Brine
Condenser
Evaporator
Heat transfer fluid circuit - is the circuit that contains
the water that transports the heat/energy to the heating
system and the water heater.
Refrigerant circuit - is the circuit that contains a chlorine
and freon free refrigerant which, inside the heat pump,
transfers the energy retrieved from the brine circuit
through evaporation, compression and condensation,
and supplies it to the heat transfer fluid circuit.
Brine circuit - is the circuit that contains an antifreeze
water based mix that obtains and transports energy from
the heat source to the heat pump. This circuit is also
known as the collector.
Heating system and
water heater
Rock, ground or ground water

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EN
W The brine is guided into the heat pump’s evaporator. The enclosed refrigerant in the refrigerant cir-
cuit is forced to boil as the pressure in the expansion valve drops and later evaporates to a gas in
the evaporator. The energy produced during this process is released by the slightly heated brine.
E The refrigerant that now contains a large quantity of energy in the form of heat is transferred to the
compressor, which both increases its temperature and pressure.
R The refrigerant then continues to the condenser. When condensing, the refrigerant supplies its heat
energy to the heat transfer fluid circuit. The refrigerant’s temperature decreases and returns to a
liquid state.
TThe heat transfer fluid circuit transports the heat energy out to the water heater, radiator or the
under floor heating system, which heat up.
YThe refrigerant is then transported through the expansion valve where the pressure drops and the
refrigerant starts to boil and then the process starts again.
2.2 Components
The heat pump you acquired is a complete heat pump installation for heating and hot water.
It has the market’s first compressor developed solely for heat pumps. It has an integrated 180
litre water heater and auxiliary heating. The water heater uses Tap Water Stratificator, which
is technology that results in more effective heat transfer and
effective layering of the water in the water heater.
The heat pump unit is equipped with control equipment,
which is controlled via a control panel.
Heat enters the house via a water borne heating system, a
low temperature system. The heat pump supplies as much
of the heat demand as possible before auxiliary heating is
engaged and assists.
The heat pump unit consists of five basic parts:
QHeat pump
l Scroll compressor
l Stainless steel heat exchanger
l Circulation pumps for brine and heating systems
l Valves and safety equipment for cooling systems and
corresponding electrical components.
WWater heater
l 180 litres
l Internal anti-corrosion protection with copper or stain-
less steel
l It has an anode that does not require replacing,
which means that it is maintenance-free
EExchange valve
l The heated water either passes through to the hea-
ting system or to the water heater depending on whe-
ther heating or hot water is to be produced.
Figure 2: Heat pump components.
1
4
3
5
2

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2.3 Outdoor and defroster function, Geysir Air
RAuxiliary heat
l 9 kW electric heating element (Geysir Air: 15 kW electric heating element)
l Electric heating element control in a maximum of three steps (Geysir Air: maximum of
five steps)
l Installed on the heating system’s supply pipe
l Covers the demand of extra energy if the heat pump’s capacity is exceeded
l Automatically connected in the heat pump unit if operating mode AUTO is selected.
T Control equipment
l Control computer with graphic display
l Temperature sensors (outdoor, supply pipe, return pipe, brine in, brine out and hot water)
l Room sensor (option)
The control equipment controls the heat pup unit’s included components (compressor, circulation
pumps, auxiliary heaters and exchange valve) and determines when to start and stop the pump
as well as producing heat for the house or hot water.
The Geysir Air, heat pumps are equipped with an outdoor unit that makes use of the energy in the
air outdoors down to -20°C. The outdoor unit has a coil where brine recovers free energy from the
outside air. It also has a fan that increases the airflow through the coil.
During operation the coil is cooled by the energy exchange at the same time as the humidity
causes it to become covered in frost. Geysir Air, model have an automatic function to defrost the
coil using the produced heat energy. If necessary, a defrosting sequence starts which means the
following:
l The defrosting sequence starts when the temperature of the brine reaches its set
parameter for defrosting.
l The compressor is stopped so that the defrosting sequence should not load the com-
pressor unnecessarily. On the other hand the compressor is not stopped when it pro-
duces hot water because the water heater is cooled when defrosting. The fan on the
outdoor unit is stopped in conjunction with defrosting to shorten the time of defrosting.
l The shunt valve in the heat pump opens so that hot brine from the defrosting tank is
mixed with the cold brine circulating to the outdoor unit. The mixture has a temperatu
re of about 15°C.
l The fifteen degree heated brine melts the frost on the outside of the coil at the same
time as the liquid is cooled.
l When the brine is no longer cooled to temperatures below 11°C the coil is sufficiently
defrosted.
l The shunt valve closes the flow of hot brine from the defrosting tank.
l Operation returns to normal.

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A Geysir Air installation consists of three basic units:
QHeat pump unit
l
Scroll compressor.
l
Stainless steel heat exchanger.
l
Circulation pumps for brine and heating systems.
l
Valves and safety equipment for cooling systems and
corresponding electrical components.
WWater heater
l
180 litres
l
Internal anti-corrosion
protection with copper or
stainless steel
l
It has an anode that does
not require replacing,
which means that it is
maintenance-free
l Defrosting tank
containing heated brine
for defrosting the outdoor
unit
EOutdoor unit
l
Heat exchanger.
l
Fan.
Figure 3: The figure shows Geysir Air .
1
2
3

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2.4 Auxiliary heat, Geysir, Geysir with Passive cooling
If the heat demand is greater than the heat pump’s capacity, the auxiliary heater engages auto-
matically. The auxiliary heater is made up of an electric heating element on the supply pipe that
has two outputs, ADD.HEAT 1 and ADD.HEAT 2, and can be controlled in three steps:
For three phase, 400V 3N, installations:
lStep 1 = ADD.HEAT 1 = 3 kW
lStep 2 = ADD.HEAT 2 = 6 kW
lStep 3 = ADD.HEAT 1 + ADD.HEAT 2 = 9 kW
For single phase, 230V 1N, installations:
lStep 1 = ADD.HEAT 1 = 1.5 kW
lStep 2 = ADD.HEAT 2 = 3 kW
lStep 3 = ADD.HEAT 1 + ADD.HEAT 2 = 4.5 kW
To calculate the total energy consumption, see the ”Settings- Calculating energy consump-
tion” section.
In the event of an alarm, the auxiliary heater engages automatically.
2.5 Auxiliary heat, Geysir Air
The auxiliary heater is made up of an electric heating element on the supply pipe that has three
outputs, ADD.HEAT 1, ADD.HEAT 2 and ADD.HEAT 3, and can be controlled in five steps:
lStep 1 = ADD.HEAT 1 = 3 kW
lStep 2 = ADD.HEAT 2 = 6 kW
lStep 3 = ADD.HEAT 1 + ADD.HEAT 2 = 9 kW
lStep 4 = ADD.HEAT 2 + ADD.HEAT 3 = 12 kW
lStep 5 = ADD.HEAT 1 + ADD.HEAT 2 + ADD.HEAT 3 = 15 kW
To calculate the total energy consumption, see the ”Settings- Calculating energy consump-
tion” section.
In the event of an alarm, the auxiliary heater engages automatically.

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2.6 Water heater, Geysir, Geysir with Passive cooling
Geysir, Geysir with Passive cooling, are supplied with an integrated 180 liters water heater.
Position Name
QHot water line
WTemperature sensor
EWater heater
RCoil
TStart temperature sensor
Figure 4: Water heater in Geysir and Geysir with Passive cooling.
Using a regular time interval, the water in the water heater is heated to 60°C to prevent the
build up of bacteria (legionella function). The factory set time interval is seven days.
Hot water production is prioritised ahead of heat production, i.e. no heat is produced if there
is a hot water demand at the same time.
The temperature of the hot water cannot be adjusted. Hot water production does not cease
at a determined temperature but when the compressor’s operating pressure switch reaches
its maximum operating pressure, which corresponds to a hot water temperature of approxi-
mately 50-55°C.
In the control computer’s TEMPERATURE menu, a number of measured and calculated
temperatures for the hot water and supply are displayed. There you can see the current hot
water temperature and the temperature of the supply pipe during heating and hot water pro-
duction.
The temperature of the supply pipe often exceeds the maximum permitted hot water
temperature, but usually during hot water production.
1
2
3
4
5

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2.7 Water heater, Geysir Air
Geysir Air is supplied with an integrated 180 liters water heater. In this case water heater
requires a tank outside that contains defrosting liquid. The difference between this water
heater and other models is the defrost function of the outdoor unit, otherwise it is the same
and has the same functions.
Position Name
QHot water line
WTemperature sensor
ETank for anti-freeze
RWater heater
TCoil
Figure 5: Water heater in Geysir Air.
2.8 Regulation information
Heat production - calculating
The indoor temperature is adjusted by changing the heat pump’s heat curve, which is the
control computer’s tool for calculating what the supply temperature should be for water that
is sent out in the heating system. The supply temperature is calculated from the outdoor
temperature and two adjustable values: CURVE and ROOM. The lower the outdoor tem-
perature, the higher the supply temperature. In other words, the supply temperature of the
water fed to the heating system will increase exponentially as the outdoor temperature falls.
The heat curve will be adjusted in connection with installation. It must be adjusted later on,
however, to obtain a pleasant indoor temperature in any weather conditions. A correctly set
heat curve reduces maintenance and saves energy.
1
2
3
4
5

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CURVE
The control computer shows the value for CURVE by means of a graph in the display. You
can set the heat curve by adjusting the CURVE value. The CURVE value indicated which
supply temperature the heating system is to have at an outdoor temperature of 0°C.
At outdoor temperatures colder than 0°C, supply water hotter than 40°C is sent out to the
heating system and at outdoor temperatures greater than 0°C, supply water cooler than
40°C is sent out.
Figure 7: Increasing or reducing the CURVE changes the slope of the curve
Value for CURVE is 40...
Outdoor temperature
Supply temperature
...at zero degrees
Maximum supply tem-
perature
Supply temperature
Outdoor temperature
Maximum supply tem-
perature
Figure 6: Graph showing the set value 40 for CURVE.

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12
Supply temperature
Outdoor temperature
Maximum supply tem-
perature
If you increase the CURVE value, the heat curve will become steeper and when you reduce
it, it will become flatter.
The most energy efficient and cost effective setting is achieved by changing the CURVE
value to adjust the temperature in the house to an even and constant temperature. For a
temporary increase or reduction, adjust the ROOM value instead.
ROOM
If you wish to increase or reduce the indoor temperature, change the ROOM value. The
difference between changing the ROOM value and the CURVE value is that the system’s
heat curve does not become steeper or flatter if the ROOM value is changed, which the
curve becomes if the CURVE value changes, instead the entire heat curve is moved by 3°C
for every degree change of the ROOM value. The reason that the curve is adjusted 3° is that
an approximate 3° increase in supply temperature is needed to increase the indoor tempera-
ture 1°.
Figure 8: Changing the ROOM value changes the heat curve upwards or downwards.
The relationship of the supply temperature to outdoor temperature will not be affected. The
supply temperature will be increased or reduced by the same number of degrees all along
the heat curve. that is, the entire heat curve rises or drops instead of the curve gradient
changing.
This method of adjusting the indoor temperatures can only be for a rise or fall.
Sometimes, at outdoor temperatures between -5°C and +5°C, part of the heat curve may
need adjusting if the indoor temperature is not constant. For this reason, the control system
includes a function for adjusting the curve at three outdoor temperatures: -5°C, 0°C, +5°C.
If, for example, the outdoor temperature is -5°C, the supply temperature will change gradua-
lly between 0°C and -10°C, maximum adjustment being reached at -5°C. The figure below
shows the adjusted CURVE -5. The adjustment can be seen in the graph in the form of a
bump.

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EN
Supply temperature
Outdoor temperature
Local higher supply tem-
perature at -5°
Figure 9: The adjusted curve at -5°C
You can choose to adjust the heat curve individually at three specified outdoor temperatures:
-5°C, 0°C, +5°C. The supply temperature can be changed by plus/minus 5 degrees.
HEATSTOP
The HEATSTOP function automatically stops all production of heat when the outdoor tempe-
rature is equal to, or higher than, the value entered for heat stop.
When the heat stop function is activated, the circulation pump will be turned off - except
when hot water is being produced. The circulation pump will be “exercised” for 1 minute per
day. The factory set value for activating heat stop is an outdoor temperature of 17°C. If the
heat stop function is active, the outdoor temperature must drop 3°C when setting, before the
heat stop stops.
MIN and MAX
The MIN and MAX values are the lowest, respectively highest set point values that are
allowed for the supply temperature.
Adjusting the minimum and maximum supply temperatures is particularly important if your
home has under floor heating.
If your house has under floor heating and parquet floors, the supply temperature must not
exceed the recommendations of the floor manufacturer. Otherwise there is a risk of dama-
ging the parquet floors. If you have under floor heating and stone tiles, the MIN value should
be 22-25°C, even in summer when no heating is required. Also remember that the value for
HEATSTOP needs adjusting upwards for summer heating. This is to achieve a comfortable
floor temperature.
If your house has a basement, the MIN value should be adjusted to a suitable temperature
for the basement in summer. A condition for maintaining the heat in the basement in the
summer is that all radiators have thermostat valves that switch off the heat in the rest of the
house. It is extremely important that the heating system in the house is trimmed correctly,
see the ”Trimming the heating system” section for further information. Also remember that
the value for HEATSTOP needs adjusting upwards for summer heating.

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TEMPERATURES
The heat pump can display a graph showing the history of the various sensors’ temperatures
and you can see how they have changed over 100 measurement points in time. The time
interval between the measurement points can be adjusted between one minute and one
hour, factory setting is one minute.
History is available for all sensors, but only the set value is shown in the display for the room
sensor. The integral value that may appear is the heating system’s energy balance.
INTEGRAL
The information below tells you how your heat pump works, there are no values that you as
a customer have to set.
The heat demand in the house depends on the season and weather conditions and is not
constant. The heat demand can be expressed as temperature difference over time and can
be calculated giving an integral value as a result (heat demand). To calculate the integral
value, the control computer uses several parameters.
A heat deficit is needed to start the heat pump, and there are two integral values, A1 and
A2, which start the compressor and auxiliary heater. During heat production, the deficit redu-
ces and when the heat pump stops, the inertia in the system causes a surplus of heat.
The integral value is a measurement of the surface under the time axis and is expressed in
degree minutes. The figure below shows the factory settings for the integral values that the
heat pump has. When the integral value has reached the set value for INTEGRAL A1, the
compressor starts and if the integral value does not drop but continues to rise, the auxiliary
heater starts when the integral value has reached the set value for INTEGRAL A2.
Figure 10: Starting and stopping heat pump operation based on integral values.
The integral value calculation stops during hot water production and during heat stop.
Integral value calculation resumes two minutes after completed hot water production to give
the heating system time to stabilise the temperature.
Heat surplus
Integral
INTEGRAL A1
Heat surplus
Heating deficit
Compressor
start (-60)
INTEGRAL A2
INTEGRAL A1
INTEGRAL A2
Aux heater
start (-660)
Compressor
stop (≥0)
Aux heater stop
(latest at -60)
Auxiliary heater
Compressor
No operation No operation
Compressor
start (-60)
Aux heater
start (-660)
Auxiliary heater
Compressor
Time
Heat pump operation
(Heat demand)

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EN
HYSTERESIS
The information below tells you how your heat pump works, there are no values that you as
a customer have to set.
In order to start the heat in advance during sudden changes of the heat demand, there is a
value, HYSTERESIS, which controls the difference between the actual supply temperature,
t1 and the calculated supply temperature, t2. If the difference is the same or greater than the
set HYSTERESIS value (x), that is, there is a heat demand, or the heat demand disappears,
quicker than the usual integral calculation, the integral value is forced to either the start value
INTEGRAL A1 or to the stop value 0°min.
Figure 11: Conditions for HYSTERESIS to force the integral value to change.
DEFR CURVE, defrosting curve for Geysir Air.
When defrosting the outdoor unit of Geysir Air, the control computer makes a calculation
using a combination of the temperature on the incoming supply line and outdoor temperature.
What guides the calculation is a linear defrosting curve that can be set so that the heat
pump and outdoor unit work optimally. The setting of three different values can be changed:
OUTDOOR STOP, DEFR CURVE 0 and DEFR CURVE [value OUTDOOR STOP ]. The de-
frosting sequence starts when the temperature of the incoming brine line reaches the outdoor
temperature somewhere along the set defrosting curve. The control computer shows the
value for DEFR CURVE 0 and DEFR CURVE [value OUTDOOR STOP] by means of a graph
in the display.
HYSTERESIS
(∆t) ≥ x
Compressor start
(-60)
Compressor stop
(0)
t1
t2
HYSTERESIS
(∆t) ≥ x
TIME
INTEGRAL
SUPPLY TEMP.

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16
Figure 12: Graph that shows how the value for DEFR CURVE 0 can be set.
The value for OUTDOOR STOP that is set means that outdoor unit is no longer used for hea-
ting or hot water production if the outdoor temperature is the same as or lower than the value.
Heating and hot water production then occurs with the help of the auxiliary heater.
The value for DEFR CURVE 0 is the temperature that the input brine return has when a
defrost must start at outdoor temperature 0°C.
In the corresponding way the value for DEFR CURVE [value OUTDOOR STOP] is the
temperature that the incoming brine return has when a defrost should start at the set outdoor
temperature for OUTDOOR STOP.
Figure 13: Graph that shows how the value for DEFR CURVE [OUTDOOR STOP] can be set.
These three settings together create the defrosting curve and all three values have an effect
on when the defrosting will start.
Temperature, input brine
pipe
Outdoor temperature
Adjustable interval for incoming brine
temperature at 0°C outdoor tempera-
ture is -5°C to -15°C
Set value for OUTDOOR STOP
Set value for
DEFR CURVE
[value OUTDOOR STOP]
AT the outdoor temperature for
OUTDOOR STOP, the adjustable
range for
DEFR CURVE [value UTESTOPP]
is -1°C to -8°C lower than
OUTDOOR STOP
Temperature, input brine
pipe
Outdoor temperature
Set value for OUTDOOR STOP
Set value for
DEFR CURVE 0

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EN
The image shows the principles of a piping installation with all components.
Figure 14: Principle solution for a piping installation.
Figure 15: Principle solution for a brine installation.
Safety valve
Pressure gauge
Filler tap
HW = Hot water
CW = Cold water
Exp = Expansio n
HW Expansion
tank
To
outlet
Supply pipe
Return pipe
Safety valve, 9 bar
cold water
CW Exp
Shut-off valve and
strainer
Flexible hoses
2.9 Installation principle, Geysir
Safety valve, 1,5 bar
Bleed and
expansion tank
Brine out
Strainer
Brine in
Filler cock incl.
strainer
Shut-off valve

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18
The image shows the principles of a piping installation with all components.
Figure 16: Principle solution for a piping installation.
Figure 17: Principle solution for a brine installation.
Safety valve
Pressure gauge
Filler tap
HW = Hot water
CW = Cold water
Exp = Expansio n
HW Expansion
tank
To
outlet
Supply pipe
Return pipe
Safety valve, 9 bar
cold water
CW Exp
Shut-off valve and
strainer
Flexible hoses
Safety valve, 1,5 bar
Bleed and
expansion tank
Filling kit incl.
strainer
Shut-off valve
Strainer
Brine in
Brine out
2.10 Installation principle, Geysir with Passive cooling

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EN
The image shows the principles of a piping installation with all components.
Figure 18: Principle solution for a piping installation.
Figure 19: Principle solution for a brine installation.
2.11 Installation principle, Geysir Air
Filling kit incl.
strainer
Safety valve, 1.5 bar
Location of the bleed and expan-
sion tank when the outdoor unit is
located at the same level or lower
than the heat pump.
NOTE! The fluid level in the tank
must be above the highest point
of the outdoor unit.
Filler cock incl.
strainer
Shut-off valve
Brine out
Brine in
Strainer
Location of expansion tank, pres-
sure gauge, and safety valve (1.5
bar) at pressurised brine circuit
when the outdoor unit is positio-
ned higher than the heat pump.
Safety valve,
Pressure gauge
Filler tap
HW = Hot water
CW = Cold water
Exp = Expansion
Exp BRINE = Expansion
brine circuit
HW Expansion
tank
To
outlet
Supply pipe
Return pipe
Safety valve, 9 bar
cold water
CW Exp
Shut-off valve
and strainer
Exp BRINE
Flexible hoses

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20
3 Control computer
A control computer is used to automatically calculate the heat demand in the house where
the heat pump is installed and to ensure that the correct amount of heat is produced and
emitted where necessary. There are many different values (parameters) that must be refe-
rred to during the calculation of the heat demand. Use the control computer to set and chan-
ge certain values that have to be adapted according to the house demand.
The display window, navigation symbols and an indicator are on the front of the control com-
puter. It consists of a simple menu system that is used to navigate the desired settings and
values.
Figure 20: Display, control buttons and indicator for the heat pump.
The control computer is controlled using a user-friendly menu system, displayed in the dis-
play. Use the four navigation symbols to navigate the menus and increase or reduce the set
values:
lA plus sign to scroll upwards or increase the values
lA minus sign to scroll downwards or decrease the values
lA right arrow to select value or menu
lA left pointing arrow to cancel selection or exit menu
The display always shows the set ROOM value and the status of the heat pump.
The menu, INFORMATION, is opened by pressing the left or right buttons. From
INFORMATION one of the four sub-menus can be opened:
OPERAT.; HEATCURVE; TEMPERATURE and OPERAT. TIME.
The symbols in the display
are only examples. Certain
symbols cannot be displayed
at the same time.
ROOM 20°C
(20°C)
NO DEMAND HEAT
OPERAT. AUTO