100% GEOTHERMAL HEAT
LÄMPÖÄSSÄ 10/2016
LÄMPÖÄSSÄ GROUND SOURCE HEAT PUMP
ESI 6-17 / EMI 22-43 / ELI 60-90
INSTRUCTIONS
FOR USE,
INSTALLATION
AND MAINTENANCE
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100% GEOTHERMAL HEAT
Foreword
We thank you for your condence in our products and congratulate you
on making an excellent choice! You have selected a long-lasting and
environmentally friendly Lämpöässä geothermal heat system. We hope
that you will enjoy the trouble-free heating provided by Lämpöässä for
many decades to come. Please familiarize yourself with these instructions for use and maintenance. Keep the instructions for future use and
reference should problems occur.
These instructions consist of three manuals drawn up with consideration
of different user groups. The instructions for use include manuals intended for users, installers, and maintenance personnel. The instructions
also separately contain warranty conditions, technical specications, and
connection diagrams.
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Contents
1. Safety 4
2. Geothermal heating system operation 4
2.1. Lämpöässä structure and operating principle 4
2.1.1. Heat collection circuit 4
2.1.2. Compressor unit 4
2.1.3. Hot water storage tank 5
2.2. ÄssäCooling cooling system 7
3. How to use the equipment 7
3.1. Control system functioning 7
3.2. Touch screen functioning 7
3.3. Setting the time and date 8
3.4. Function shortcuts 8
3.4.1. Room temperature adjustment 8
3.4.2. Room temperature adjustment by room temperature measurement 8
3.4.3. Domestic water boost 9
3.4.4. Home/Away function 9
3.4.5. Measurements 10
3.4.6. Timer functions 10
3.4.7. Heating curves 10
3.4.8. Storage tank settings 11
3.4.9. Optional equipment 11
3.5. Menu functions 11
3.5.1. Storage tank settings 11
3.5.2. Heating curves 12
3.5.3. Other set values 13
3.5.4. Measurements 16
3.5.5. Optional equipment 17
4. INSTALLATION WORKS 18
4.1. Before installation 18
4.1.1. Transport 18
4.1.2. Ground source heat pump installation area 18
4.1.3. Removing the packaging 18
4.1.4. Space requirements 19
4.2. HVAC installation 19
4.2.1. Heatcollectioncircuitandllgroupinstallation 19
4.2.2. Filling and de-aeration of the heat collection circuit 20
4.2.3. Connections between heat pump and storage tank 20
4.2.4. Heating and domestic hot water connections 20
4.3. Electrical installation and outdoor sensors 22
4.3.1. Outdoor sensor 22
4.3.2. Storage tank and heat distribution sensors 23
4.3.3. Room sensor (optional) 23
4.3.4. Current monitor 23
4.4. Commissioning 24
5. MAINTENANCE 25
5.1. Maintenance and care 25
5.2. Possible problems occurring during use 25
5.3. Alarms 26
5.4. Maintenance procedures 26
5.4.1. Manual control 27
5.4.2. Input and output statuses 27
5.4.3. Running information 28
5.4.4. Heat distribution circuit quantity 28
5.4.5. Domestic hot water temperature limit 28
5.4.6. Positioning valve control 28
5.4.7. Part-power / Full power 29
5.4.8. Immersion control 29
5.4.9. Temperature gauges 30
5.4.10. External alarm 30
5.4.11. Soft starter alarms 30
5.4.12. Super heat valve control 30
5.4.13. Boiler maximum limits 31
5.4.14. Cooling 31
5.4.15. Return factory settings 31
6. WARRANTY CONDITIONS 32
7. TECHNICAL SPECIFICATIONS 33
8. ENERGY LABEL 35
9. HVAC SCHEMES 43
10. ELECTRICITY SCHEMES 46
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2.1. Lämpöässä structure and operating principle
The Lämpöässä ESi/EMi/ELi series are especially suitable for use as the
primary heating system of new and renovated residential buildings and
secondary residences. In order to ensure trouble-free operation, all
Lämpöässä geothermal heat pumps have been test-run, set up and
tested by the manufacturer. If a geothermal heat pump is being used in
the part-power conguration, for example, because high temperature is
required in the radiator system, the heating system must be dimensioned
and adjusted so that the return water temperature is always below +55
°C. By part-power we hereby mean that the electric heating element
(immersion heater) is allowed to switch on if necessary.
Because Lämpöässä ESi/EMi/ELi series doesn’t include integrated storage tank, it needs a separate storage tank to function. The size and
structure of the storage tank can be chosen due to the need for hot
domestic water. For the operating principle and main components of Esi/
Emi series, see the picture on page 6. The picture has also been discussed in Sections 2.1.1-2.1.3.
2.1.1. Heat collection circuit
The geothermal heat system circulates water/ethanol mixture protected
against freezing in the heat collection circuit in order to collect thermal
energy accumulated in soil through solar radiation. The heat collection
piping used comprises a bore hole or plastic pipe (PEM 40/10) placed at
least 1-1.2 metres deep in soil or at least 3 metres deep in water. The
circulating mixture warms up by a few degrees and delivers this thermal
energy to the geothermal heat pump’s EVAPORATOR (1), i.e., the heat
exchanger. The temperature of the heat collection uid arriving from the
soil to the evaporator is approx. 0 ºC.* This temperature can be lower in
winter and higher in summer. At the evaporator, the energy of the heat
collection uid is transferred to the low-pressure refrigerant circulating
inside the heat pump. The refrigerant is evaporated using the thermal
energy.
2.1.2. Compressor unit
From the evaporator, refrigerant vapour is transferred to COMPRESSOR
(2) for ramping up the pressure. This is accompanied by steep temperature rise. In the course of the heat pump process, the refrigerant temperature is the highest after the compressor, in excess of 100 ºC, and the
refrigerant is referred to as ’hot gas’.
1. Safety
In order to ensure trouble-free operation of the Lämpöässä geothermal
heating system and achieve the best efciency, the system must be
transported and installed in accordance with the manufacturer ’s instructions. After performance of installation works, the installation checklist
must be reviewed in order to minimise the risk of potential errors. The
manufacturer shall not accept any responsibility for equipment defects or
related expenses caused through installation faults.
The pipe and electrical installations for the Lämpöässä geothermal heating systems can only be installed by qualied persons. If problems
should occur during installation, we recommend that you contact your
dealer or consult with Lämpöässä maintenance specialists by phone.
If the fault symbol is displayed on the touch screen, a system
malfunction has occurred. Press this button to display information on the cause of the malfunction.
Press this button for additional information on the touch
screen data.
2. Geothermal heating system operation
A geothermal (or ground source) heat pump can extract geothermal heat
from soil, water bodies or a bore hole. For an overview of the heat pump
and its operating environment, see the picture below. Of the total thermal
energy required for heating, Lämpöässä collects more than 75% from
natural sources. For thermal energy collection, approx. 25% of electrical
energy is required for running the various system components.
The geothermal heating system consists of heat collection piping, water/
ethanol (ethyl alcohol) mixture circulating within the piping, and a
ground source heat pump unit. The ground source heat pump unit comprises an integrated hot water storage tank, compressor, heat exchangers, and closed refrigerant circuit, i.e., compressor unit. The heat collection uid in the ground circuit, the refrigerant and the water in the
heating network never mix at any stage of the process. Heat is transferred
between uids using plate heat exchangers.
i
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The hot refrigerant is transferred from the compressor to heat exchangers
(condenser and superheater), through which it releases its thermal
energy into the heating water storage tank (6). The heat in the storage
tank is used for heating and hot domestic water production purposes.
When heat is extracted from the refrigerant vapour, a point is reached
where the vapour begins to revert into liquid – i.e., is condensed. This
point is close to temperature required for heating (in general, approx.
35-55 ºC). Since the refrigerant gas leaves the compressor at approx.
120 ºC, it cools rst and liquees later. The energy released in the course
of such cooling is referred to as superheating energy. The superheating
energy can be efciently utilised in nal heating of domestic water, by
using a superheat exchanger (3).
After the superheater, the refrigerant is transferred to CONDENSER (4),
where it is transformed from vapour to liquid, releasing the heat to the
heating water storage tank and from there to the heating network. Emi
22P- and Emi 43P -models with separate storage tank has no separate
superheater heat exchanger. All thermal energy is conceded through
condenser heat exchanger to the separate storage tank. Having conceded
its thermal energy, the liquid refrigerant is transferred through dehydration lter to EXPANSION VALVE (5), where the pressure of the liquid
refrigerant drops and a new cycle from the evaporator can commence.
2.1.3. Hot water storage tank
It is possible to connect multiple storage tanks to ESi/EMi/ELi -models to
store the thermal energy created. These storage tanks can vary in size.
Lämpöässä Esi and Emi utilises carefully designed superheating technology allowing advantageous generation of heating and domestic hot
water. The objective is to maximise the share of geothermal heat in overall heating. A two-sectioned HEATING WATER STORAGE TANK (6)
equipped with partition enhances utilisation of superheating energy. The
coefcient of performance remains at a high level, since the energy-efcient superheating mixture involves heat transfer between two tank sections using two different heat exchangers (condenser and superheater).
Water from the hot water storage tank is circulated in the heat distribution piping consisting of 1-3 loops.
The top part of the storage tank, i.e. the UPPER STORAGE TANK (6a),
is heated by using superheat removal heat exchanger (superheater 3) by
the extremely high thermal energy acquired from the compressor. Hot
superheating energy is stored for nal heating of domestic hot water. If
required, the high thermal energy can also be transferred to the heating
system from the top storage tank.
The LOWER STORAGE TANK (6b) stores the thermal energy required for
central heating from the condenser (4) at heating network-adjusted tem-
HEAT DISTRIBUTION
CIRCUIT
HEAT COLLECTION
COOLING
GEOTHERMAL HEAT PUMP
Bore hole
Horizontal piping
in soil
Piping in water
Compressor
unit
Two-sectioned
storage tank
Heat collection
circuit
Heating water
Domestic water
Compressor
Evaporator
Superheater
Condenser
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peratures lower than those of domestic hot water. The storage tank
temperature levels are controlled by an adjustment curve – thus, at ordinary heating circumstances, the temperature varies depending on the
heating need. In such cases, the system operates in so-called ‘oating
condensing’ mode. Heat distribution can be arranged using water circulation-based oor heating, hot water radiators or air heating. The best
coefcient of performance is achieved by oor heating, since the lower is
the temperature of heat release, the better is the coefcient.
Domestic water is heated within a COIL (7) inside the storage tank,
which is divided into two parts. The domestic water is pre-heated in the
coil located at the storage tank’s lower part, while nal heating takes
place inside the coil located at the tank’s upper part. In general, domestic water temperature must exceed that of the heating water. Owing to
the two-stage heat release of the superheating technology, the larger
storage tank section heating the supply water can be kept at a lower
temperature, since nal heating of the domestic water takes place using
the upper storage tank section of higher temperature. In such a case, the
Solution with separate storage tank with intermediate oor:
Solution with separate storage tank:
Condenser Superheater
Evaporator
6a.Upper storage tank
6b. Lower storage tank
7.DHW
coils
Heating circulation
Separate storage tank Ground source heat pump
2. Compressor
5. Expansion
valve
Brine
circuit out
Brine
circuit in
4.
3.
1.
Heating circulation
Ground source heat pump
Brine
circuit out
2. Compressor
5. Expansion
valve
Separate storage tank
Brine
circuit in
Condenser Superheater
Evaporator
6. Storage tank
7.DHW
coils
4. 3.
1.
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Use the button in the bottom left corner to return to the home screen. Use the arrow button in the bottom right corner to return to previous screen. For
instructions screen, press the ‘i’ button in the top right corner. In case of operation faults, an alarm button is displayed on the top bar.
process operation temperatures remain as low as possible, which
improves the system’s annual efciency. Division of the coil into two
parts allows heating of the domestic water circulation only using the
upper storage tank coil, so that blending of the storage tank temperature
stratications is avoided.
Lämpöässä ESi/EMi/ELi are well suitable for pieces of real estate with
especially high hot domestic water consumption. In renovated residential
buildings Lämpöässä Esi/Emi can be connected to existing separate storage tank as well if the storage tank is in good condition and is suitable
for geothermal heating. In this case Lämpöässä ESi/EMi/ELi can be connected without the superheating feature and separate storage tank is
used. In case the building includes previously installed water tank that is
suitable for geothermal heating, it can be connected to Lämpöässä ESi/
EMi/ELi.
2.2. ÄssäCooling cooling system
A passive cooling system can be installed into the heat collection circuit,
in which case the uid in the circuit is circulated through an additional
heat exchanger. The heat exchanger releases cooling energy to indoor air.
Such exchangers include radiant cooling units provided within the ventilation system or fan coils installed indoor. Lämpöässä offers multiple
solutions for control of the cooling with ÄssäControl control system.
These are available as accessories.
The Lämpöässä product family includes wall and ceiling-mounted fan
units for cooling, complete with installation set. Passive cooling is a
favourable approach to cooling, since the only running costs are associated with water circulation pump and cooling fan operation. In Esi/Emi
series cooling is connected externally to the device through heat collection circulation.
3. How to use the equipment
3.1. Control system functioning
ÄssäControl by Lämpöässä is a logic-based control system. It considers
the conditions prevailing in the premises and the surrounding environment with improved precision. ÄssäControl control system adjusts the
heating network supply water temperature proceeding from the storage
tank and outdoor temperature based on a seven-point adjustment curve,
so that the room temperature remains pleasantly even regardless of outdoor temperature variations.
Depending on the connections, the control system controls 1-3 heat
distribution circuits or 1-2 heat distribution circuits and domestic hot
water temperature. With the help of the ÄssäControl control system, it is
also possible to control a heat source external to the geothermal heat
pump unit.
These instructions contain a user manual and a manual for equipment
installer. Maintenance functions are password-protected.
3.2. Touch screen functioning
After unit start-up the display goes into basic mode, displaying on the
two-part ÄssäControl home screen function shortcuts (8 pc.), time, date,
and outdoor temperature. To switch between the two home screens, use
the arrow buttons in the bottom right corner. To access the Functions
screen, press the symbol in the top left corner.
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Use the button in the bottom left corner to return to the home screen. Use the arrow button in the bottom right corner to return to previous screen. For
instructions screen, press the ‘i’ button in the top right corner. In case of operation faults, an alarm button is displayed on the top bar.
The function shortcuts displayed on the rst home screen include room
temperature adjustment, domestic water boost, home/away function,
and measurements.
The function shortcuts displayed on the second home screen include
timer functions, adjustment curve set values, storage tank set values,
and optional equipment.
Use the button in the bottom left corner to return to the home screen.
Use the arrow button in the bottom right corner to return to previous
screen. For instructions screen, press the ‘i’ button in the top right corner.
In case of operation faults, an alarm button is displayed on the top bar.
Alarms are described more in chapter 5.3.
3.3. Setting the time and date
The time and date can be adjusted by pressing the date/time displayed
on the home screen top part.
3.4. Function shortcuts
For user convenience, shortcuts have been provided to functions used
most often. Use home screen shortcuts to access the respective
functions.
3.4.1. Room temperature adjustment
The heat distribution circuit/circuits’ heat curve setting can be adjusted
by using the home screen shortcut Room temperature adjustment to
achieve room temperature increase or decrease. The setting can be
adjusted between -3...+3 °C by using the ‘plus’ and ‘minus’ buttons. The
function Room temperature adjustment is intended for quick temperature increase. Choose the heat distribution circuits to be inuenced by
the adjustment by buttons HD1, HD2 (optional equipment) and HD3
(optional equipment). To restore the original setting, change the value to
0 °C. The original heating curve and heating curve adjusted by this function are visible on the Heat adjustment curve screens.
3.4.2. Room temperature adjustment by room
temperature measurement (optional equipment)
As an option, the room temperature measurement function can be
acquired for the system. In such a case, the room temperature is also
displayed on the home screen and the screen Room temperature adjustment includes information on current/target room temperatures. Adjustment of room temperature now takes place by comparing the target and
current room temperatures. By adjusting the target temperature higher or
lower than the room temperature at the time, the unit adjusts the heat
curve in the desired direction. Choose the heat distribution circuits to be
inuenced by the adjustment by buttons HD1, HD2 (optional equipment) and HD3 (optional equipment).
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Use the button in the bottom left corner to return to the home screen. Use the arrow button in the bottom right corner to return to previous screen. For
instructions screen, press the ‘i’ button in the top right corner. In case of operation faults, an alarm button is displayed on the top bar.
The rate of the function Room temperature adjustment can be increased
1...7 times by compensation. The compensation function is included
under additional room temperature settings, which can be accessed by
pressing the button at the bottom centre of the screen. In case of compensation value 7, the adjustment is seven times faster than in case of value
1. Large compensation values can cause room temperature uctuations.
3.4.3. Domestic water boost
The storage tank can be set to function at maximum thermal output in order
to meet transient needs, for example, if the need for domestic hot water
increases temporarily. For domestic water boost, press the Max button.
Return to the normal mode by pressing the Eco button. Choose the domestic water boost period (1...24 h) using the ‘plus’ and ‘minus’ buttons.
3.4.4. Home/Away function
The home/away function shortcut can be used to save energy when the
residents are away for a long holiday trip, for example. The function
Away changes the heat distribution circuit and storage tank temperature
settings until the set date and time; after that, the original set values are
automatically restored (i.e., the normal mode Home is reactivated).
The system’s normal mode is Home. To activate the Away function, press
the button Away and set the date and time of your return for restoring the
mode Home (default value: 24 h). The changes in room and storage tank
temperatures can also be programmed. In order to ensure restoring of the
normal temperatures by the time of your return from the holiday trip, the
day preceding the actual return date, for example, could be programmed
as the return date.
Set the desired heat distribution circuit temperature adjustment under
Room temperature adjustment; values between -10...+10 °C are possible. Set the desired storage tank temperature adjustment value under
Storage tank temperature adjustment. This setting inuences domestic
water temperature. Values between -10...+10 °C are possible. If any of
these temperatures is not to be changed, keep 0 °C as its value. When
leaving for a holiday trip, for example, both of the values might be lowered by approx. 5 degrees by setting -5 °C as the room/storage temperature adjustment value.
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Use the button in the bottom left corner to return to the home screen. Use the arrow button in the bottom right corner to return to previous screen. For
instructions screen, press the ‘i’ button in the top right corner. In case of operation faults, an alarm button is displayed on the top bar.
On the following screens, the target weekdays for timed temperature
changes are selected. On the screens, the temperature change beginning
and end times (in full hours) can be set in weekday-specic manner, as
well as the change in degrees. Temperature change values between
-10...+10 °C are possible.
The last timing column consists of symbols describing the state of timing.
A white symbol means that there is no active timer setting for the weekday.
A yellow symbol means that time and temperature have been set, but the
timer function has not been activated. A green symbol means that time and
temperature have been set and the timer function has been activated.
3.4.7. Heating curves
This shortcut allows accessing the Heating curves menu, which will be
discussed in more detail in the Section on menu functions.
The function can be activated only if the end date or time is in the future.
If the end date is set into the past, the mode Home is activated and the
mode Away cannot be activated.
3.4.5. Measurements
This shortcut allows accessing the Measurements menu, which will be
discussed in more detail in the Section on menu functions.
3.4.6. Timer functions
Timer functions can be utilised, for example, in secondary residences or
to benet from off-peak electricity rates, in which case weekday-specic
modication of temperature levels is advantageous. The values once set
are saved in the memory and can be modied as necessary. The timer
function can be activated or removed from use through the Timer func-
tions shortcut.
On the Timer functions screen, the timing target (storage tank or heat
distribution circuit) is selected and the timer function activated/
deactivated.
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Use the button in the bottom left corner to return to the home screen. Use the arrow button in the bottom right corner to return to previous screen. For
instructions screen, press the ‘i’ button in the top right corner. In case of operation faults, an alarm button is displayed on the top bar.
3.4.8. Storage tank settings
This shortcut allows accessing the Boiler settings menu, which will be
discussed in more detail in the Section on menu functions.
3.4.9. Optional equipment
This shortcut allows accessing the Optional equipment menu, which will
be discussed in more detail in the section on menu functions.
3.5. Menu functions
Menu functions can be accessed by pressing the menu button on the
home screen.
3.5.1. Storage tank settings
Storage tank set values are used to adjust the storage tank top and bottom section temperature limits to meet the site’s domestic hot water
consumption. The system includes a function that automatically elevates
storage tank temperature if the heat distribution circuit adjustment curves
are set higher than the storage tank temperature. Factory settings for the
storage tank bottom section are 40 °C (min) and 45 °C (max). Factory
settings for the storage tank top section are 50 °C (min) and 55 °C (max).
The difference between Min and Max values can be 2...10 °C. The maximum allowed storage tank top and bottom section temperature set value
is 60 °C in case of full power geothermal heat pumps and 60 °C (bottom
section) / 85 °C (top section) in case of part-power geothermal heat
pumps. In Esi, Emi 22P-Emi 43P or ELi 60P-90P model with separate
storage tank are the temperature sensors installed in the same water
space on the top section of the storage tank. In such case same temperature settings are used for the top and lower sections of the storage tank.
The value Correction indicates the temperature as corrected by the Timer
function, Home/Away function, Domestic water boost function, or automatic heat distribution circuit correction.
The storage tank temperature is a decisive factor in compressor starting
and stopping. The minimum value programs compressor starting at the
storage tank’s target temperature. The maximum value programs compressor stopping at the storage tank’s target temperature.
The storage tank is heated by the compressor. If the target temperature
cannot be reached in a certain time (1...24 h), it is presumed that there
is something wrong with the compressor and the compressor is turned
off. In such cases, the storage tank is heated by the electric heating element. The default set value for this function is 12 h. If the electric heating element is switched on, the following warning is displayed on the
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Use the button in the bottom left corner to return to the home screen. Use the arrow button in the bottom right corner to return to previous screen. For
instructions screen, press the ‘i’ button in the top right corner. In case of operation faults, an alarm button is displayed on the top bar.
control panel display: Storage tank temperature not achieved in set time.
Electric heating element has been switched on. For more information on
programming the time, see menu Set values. NOTE! Electric heating is
used only as back-up!
Maximum annual ground source heat pump efciency can be achieved if
the storage tank temperature is kept at an optimal level. The ground rule
is that the storage tank set values must be kept at the lowest possible
level, since it allows the best annual efciency.
In winter, when the need for heating is larger, the set value for the storage
tank bottom section should be programmed in relation to the supply
water temperature. The temperature of the storage tank upper part
increases after a long period of use and the threshold value for the compressor to run is 90 °C. This is due to the superheating properties of the
storage tank structure. Because of this, the domestic hot water temperature limiting function (option) can be used in order to avoid potential hot
water-related hazards. In general, the compressor is controlled according
to the minimum setting of the storage tank lower part.
In summer, when there is no need for heating (with the exception of
humid rooms), the compressor is seldom on and there is less superheating for domestic hot water production. In such a case the storage tank
upper part and lower part temperatures are close to each other.
3.5.2. Heating curves
Heat distribution circuits (HD) are controlled by a seven-point adjustment curve. Depending on the connections, the control system controls
1-3 heat distribution circuits or 1-2 heat distribution circuits and domestic hot water temperature. In the Heating curves menu, the values of all
heat distribution circuits can be changed separately to meet the heating
water temperature (supply water) at a certain outdoor temperature.
Exemplary oor heating adjustment curve (factory setting) °C*
Outdoor temperature -20 -13 -7 0 +7 +13 +20
Heating water temperature +32 +31 +29 +27 +25 +23 +21
Exemplary radiator heating adjustment curve °C*
Outdoor temperature -20 -13 -7 0 +7 +13 +20
Heating water temperature +53 +48 +42 +36 +30 +25 +21
The factory-set heating curve is suitable for oor heating. The adjustment curve values should be specied during the rst year; they could be
changed as follows, for example: If the indoor temperature feels too chilly
while the outdoor temperature is -10 °C, the supply water set value can
be increased a little at the outdoor temperature points -13 °C and -7 °C.
Monitor the inuence of the adjustment on room temperature for at least
24 hours before making any further modications in adjustment curve
set values. When using radiator heating temperature change is quicker.
For the temperature correction caused by Home/Away or Timer functions, see the bottommost line.
Maximum domestic water temperature can be limited by adjusting the Domestic water temperature limit value between 0...90 °C (factory setting: 55 °C).
* Conditions in Finland.
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Use the button in the bottom left corner to return to the home screen. Use the arrow button in the bottom right corner to return to previous screen. For
instructions screen, press the ‘i’ button in the top right corner. In case of operation faults, an alarm button is displayed on the top bar.
3.5.3. Other set values
The menu Other set values allows circuit-specic programming of maximum and minimum heat distribution circuit supply water values, as well
as programming of the safety device-heating element activation time.
3.5.3.1. Language
The Language menu allows choosing between Finnish, Swedish and
English for the user interface language.
3.5.3.2. Screen settings
On screen settings -page it is possible to adjust the brightness of the
screen and also the time after the screen goes off.
3.5.3.3. Min and max temperature of HD circuits
Set values are minimum possible values (min) and maximum possible
values (max). Heat distribution circuits 2 and 3 are optional.
Factory settings for heat distribution circuits are as follows:
Set value and
setting range
Meaning Factory
setting
Supply water1
max 0…90 °C
Maximum value of heat distribution
circuit 1 heating supply water.
60°C
Supply water1
min 0…90 °C
Minimum value of heat distribution
circuit 1 heating supply water.
5°C
Supply water2
max 0…90 °C
Maximum value of heat distribution
circuit 2 heating supply water.
60°C
Supply water2
min 0…90 °C
Minimum value of heat distribution
circuit 2 heating supply water.
5°C
Supply water3
max 0…90 °C
Maximum value of heat distribution
circuit 3 heating supply water.
60°C
Supply water3
min 0…90 °C
Minimum value of heat distribution
circuit 3 heating supply water.
5°C
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Use the button in the bottom left corner to return to the home screen. Use the arrow button in the bottom right corner to return to previous screen. For
instructions screen, press the ‘i’ button in the top right corner. In case of operation faults, an alarm button is displayed on the top bar.
3.5.3.4. Safety device settings (in monovalent devices)
This screen allows programming activation of the safety device-heating
element if the storage tank target temperature is not achieved by the
compressor during the dedicated period (from 0 to 24 hours, factory
setting: 12 hours). The setting is applicable in full-power systems only.
3.5.3.5. Bivalent settings (in bivalent devices)
In bivalent system the immersion heater and compressor can be on at
the same time. In bivalent settings -page can be set the heating time
before additional heating goes on.
3.5.3.6. Summer functions
In this screen months when function is valid and circulation pumps
active are selected. To avoid circulation pumps to be stucked they automatically start up every week for 30 seconds. Here you can also validate
heating circuits where summer function is effecting. Circuit can be active
during a whole summer when it is controlling bathroom area for example.
3.5.3.7. Brine circuit circulation pump control
This screen allows adjustment of the ground circuit uid ow rate. If the
setting is 100%, the ow speed is maximal. If the setting is 0%, the ow
speed is minimal. Factory setting: 80%.
3.5.3.8. External heating source controlling (accessory)
It is possible to connect a variety of additional external heat sources to the
ground source heat pump, such as electricity or oil boiler. In the menu,
Additional heat source control, the heating time is determined before the
additional heat source is activated, as well as the time between the additional heat sources. This setting is only in bivalent mode. In monovalent
mode the additional heat source can be used as a safety device. As standard the system comprises a control of one heating source. Control of (2
... 4) additional heating sources, can be purchased as an accessory.
Settings Options Factory
settings
Number of immersion
heaters
1…4 1
Resistor control Analog / digital Digital
Analog Control (only if the
control mode analog)
0 ... 10 V, The four-stage voltage
amount by which the additional
heat sources are triggered.
0, 0, 0, 0
Locations of the additional
heat sources
Upper / lower tank Upper
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Use the button in the bottom left corner to return to the home screen. Use the arrow button in the bottom right corner to return to previous screen. For
instructions screen, press the ‘i’ button in the top right corner. In case of operation faults, an alarm button is displayed on the top bar.
3.5.3.9. ÄssäControl-cooling, free (accessory)
To the heat pump collector can be installed a cooling system, where the
heat transfer uid is circulated in the building. If the system is tted
with a room temperature sensor, cooling circuit temperature is automatically adjusted to the desired room temperature. Without the room sensor,
the system is cooling at maximum power. Free cooling is an energy-efcient way to cool the property, as the operating cost only consists of a
circulating pump and energy consumption of the cooling fan motor. The
cooling setting values can be modied under Other settings and Cooling
(Note! The cooling-function is acquired).When taking the cooling system
into use, the cooling control mode is set in the service menu. In the
service there is following selectable control modes: Room temperature,
External and Manual.
Room temperature
Room Temperature menu provides the cooling temperatures, which determines when the cooling system is running. In addition, the menu will
display the current room temperature, coolant temperature, humidity, and
dew point value, as well as system status heating / cooling / off).
External
When the control mode is External, cooling is controlled by an external
thermostat, which is connected according to the wiring diagram.
Manual control
When the control mode is set to Manual, this menu can be used to
switch to active cooling. The system tries to keep the coolant temperature at a minimum of one degree above the dew point. From the menu
coolant temperature can be set to be constant, where the dew point
effect is not taken into account.
3.5.3.10. ÄssäControl-cooling, exible (accessory)
Flexible cooling allows for a more versatile and more efcient cooling. In
the exible cooling, there are six different control modes:
1. Heating
Ground source heat pump uses the ground loop by transferring
energy to the storage tank for heating or hot water.
2. Heating and cooling
Ground source heat pump heats the boiler by transferring heat
from the refrigerant circuit and ground loop to the storage tank.
This function is available when heating and cooling is needed
simultaneously.
3. Passive cooling
Ground source heat pump cools the cooling circuit by transferring
heat to the ground loop. If the coolant circuit temperature has not
reached the set value, in the time available (the display section
Delay), becomes passive cooling automatically active cooling
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Use the button in the bottom left corner to return to the home screen. Use the arrow button in the bottom right corner to return to previous screen. For
instructions screen, press the ‘i’ button in the top right corner. In case of operation faults, an alarm button is displayed on the top bar.
4. Active cooling
The ground source heat pump uses the compressor to cool the
cooling circuit by transferring heat to the accumulator tank
5. Unloading the extra heat
If the temperature in the accumulator rises to high, the extra
heat is unloaded via an exchanger to the ground loop or air.
6. Switched off
The control of cooling is based on the machine’s control modes, and
control of magnetic valves and the circulating pumps. The position of the
magnetic valves in different modes are determined in the service menu.
In the service menu there is available control mode Control of the room
temperature and External, which acts as free cooling.
3.5.3.11. Linkin several ground source heat pumps
Determing the master device
If the system contains more than one geothermal heat pump, one has to
be chosen as master device. All the sensors are connected to the master
device. Program settings are dened in the factory and the master device
is marked with the MASTER-marking and other devices with SLAVEmarking. All heat pumps can be monitored and controlled from each
heat pumps control screen.
The compressors rotation extra accessory can be enabled when the system contains more than one geothermal heat pump. However, all the
linked ground source heat pumps have to be equipped with ÄssäControl
Compressor rotation
If multiple ground source heat pumps are used in the building, they can
be connected to each other with compressor rotation (optional equipment). In such cases should be noted that all connected ground source
heat pumps are equipped with ÄssäControl control system. Compressor
rotation evens the operating hours of compressors. In the Compressor
rotation menu can the start and shutdown intervals be modied. Possible
values are for start interval values between 1...240 min (factory setting
1 min) and shutdown interval 1...240 s (factory setting 10 s).
3.5.4. Measurements
Ground source heat pump operation can be monitored using various different measurement data. Use the screen numbering in the bottom bar
for navigating between the Measurements screens.
Measurements screen values describe heat pump operation under various conditions and the values shown cannot be modied. The left-hand
column indicates current measurement values and the right-hand column the respective set values. Measurement results from all sensors,
compressor running times, and electric heating element operation times
can be browsed.
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Use the button in the bottom left corner to return to the home screen. Use the arrow button in the bottom right corner to return to previous screen. For
instructions screen, press the ‘i’ button in the top right corner. In case of operation faults, an alarm button is displayed on the top bar.
3.5.5. Optional equipment
In addition to the standard delivery, all of the additional features acquired
are displayed on the Optional equipment screen.
Possible optional equipment includes:
Optional equipment For more information, see
Heat distribution circuit 2 Adjustment curves, Timer functions
Heat distribution circuit 3 or
Domestic water temperature limit
Adjustment curves, Timer functions
Adjustment curves
Room temperature measurement Shortcut functions, Adjustment curves
External heat source controlling Other set values
ÄssäControl-Cooling free Other set values
ÄssäControl-Cooling exible Other set values
Compressor rotation Other set values
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INSTALLATION
4. INSTALLATION WORKS
4.1. Before installation
Pipe assemblies for the installation of the Lämpöässä system may only
be installed by qualied and trained persons. The equipment must be
installed in compliance with instructions provided; after performance of
installation works, the installation checklist must be reviewed in order to
minimise potential errors. The manufacturer shall not be responsible for
any equipment defects or related expenses caused through installation
faults.
Check that:
• all the necessary hoses and sensors have been delivered
• the ground source heat pump has been correctly tted
• the connections on top of the geothermal heat pump are intact
• the fuse size is correct for the master fuse and the ground source
heat pump (see technical specications)
• the ground circuit collection piping and supply piping have been
installed properly
4.1.1. Transport
The Lämpöässä geothermal heat pump must always be transported in a
vertical position. If tilting the equipment is unavoidable, for example, to
pass through a doorway, the maximum tilting angle allowed is 45°. In
other cases, the machine’s compressor unit must be detached during
tilting. The equipment may be moved from beneath using a fork lift, for
example. Do not go underneath the equipment while it is being lifted!
A transportation platform has been fastened on both sides of the ground source
heat pump using screws. The ground
source heat pump’s accessory package
includes adjustable feet to be screwed into
the unit bottom (see picture). After that,
remove the wooden platform elements and
their xation screws (4 pc). To remove the
platform, lift the equipment by a fork lift,
for example.
4.1.2. Ground source heat pump installation area
We recommend that the Lämpöässä ground source heat pump be
installed in a warm room with oor drain. During installation, when lling
the ground circuit, some water/ethanol or water/glycol mixture may be
splashed onto the oor. The chosen area does not have to be reproof.
Approx. 50 cm of installation space should be reserved above the
equipment.
The oor must be able to withstand the weight of the ground source heat
pump carrying a full storage tank. The oor must also be sufciently
even, because the ground source heat pump must be installed as level as
possible. Final adjustments can be made using the adjustable feet underneath the equipment.
4.1.3. Removing the packaging
Remove the plastic wrapping and corner padding from around the product. Check that the pump has not suffered any transportation damage. If
the heat pump is found to be damaged, the transport company must be
immediately notied. We recommend photographing the damages.
Also check the contents of the delivery immediately. The Lämpöässä ESi/
EMi/ELi-series accessory package includes the following components:
• valve motor
• 4-way valve (GSHP with separate storage tank with intermediate
oor) OR 3-way valve (GSHP with separate storage tank)
• heat distribution pump
• outdoor sensor
• heating circuit temp. sensor
• storage tank temp. sensor
(2 pc.)
• adjustable foot (4 pc.)
• lling group
• lling bottle (packaged
inside the product)
• safety valve
If some of the accessories specied
in the order are not included in the
delivery, notify the equipment
dealer within ve days.
The plastic roof of the product is
removed by lifting it from the edges.
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100% GEOTHERMAL HEAT
The front door is opened by sliding it upwards. Before this two screws in
the front panel must be removed (as shown in the picture on right).
4.1.4. Space requirements
Lämpöässä ESi/EMi/ELi series ground source heat pump can conveniently
be placed into a technical or utility room. The oor space to be reserved
between the machine and storage tank must be adequate for pipe connections. Considering possible equipment maintenance, there must be
approx. 70 cm of free space in front of the geothermal heat pump.
The height of a Lämpöässä ESi/EMi/ELi series ground source heat pump
(including adjustable feet) is at least 145 cm. The transport platform
adds some 8 cm. At the back section of the machine are the ground
circuit connections that rise some 5 cm above the roof. Approx. 50 cm
of free space must be reserved for connections on top of the machine.
This should be kept in mind when installing the equipment into a low
room, such as basement.
ESi EMi ELi
O
STORAGE
TANK
Y
B
A V
X
C
GSHP
F
O
A
400 400 400
B
50 50 50
C
50 50 50
O
700* 700* 700*
X
2300 3200 3600*
F
700 700 700
Y
1500 1500 2500*
V
200 200 200 * Min. width depends on the size of the selected storage tank
4.2. HVAC installation
4.2.1. Heat collection circuit and ll group installation
The connections for heat collection circuit are located on the top of the
device. Install the heat collection circuit pipes to exible hoses on the top
of the device pursuant to the picture below. Install the ll and deairing
group to the returning line from the heat collection circuit.
Esi
1. Lauhduttimelta meno
2. Lauhduttimelle paluu
3. Tulistimelta meno
4. Tulistimelle paluu
5. Maapiiriin meno
6. Maapiiristä paluu
1 2 3
4
5
6
1. Flow from the condenser
2. Return into the condenser
3. Flow from the superheater
4. Return into the superheater
5. Collector circuit,
flow from the evaporator
6. Collector circuit,
return into the evaporator
¾”
¾”
½”
½”
1”
1”
¾”
¾”
½”
½”
1”
1”
Emi
1. Lauhduttimelta meno 1½” sk
2. Lauhduttimelle paluu 1½” sk
3. Tulistimelta meno ¾” sk
4. Tulistimelle paluu ¾” sk
5. Höyrystimeltä maapiiriin 2” sk
6. Maapiiristä höyrystimelle 2” sk
1. Flow from the condenser 1½” IT
2. Return into the condenser 1½” IT
3. Flow from the superheater ¾” IT
4. Return into the superheater ¾” IT
5. Collector circuit,
ow from the evaporator 2” IT
6. Collector circuit,
return into the evaporator 2” IT
12
3
4
5
6
ELi
1. Lauhduttimelta meno 2” sk
2. Lauhduttimelle paluu 2” sk
3. Tulistimelta meno ¾” sk
4. Tulistimelle paluu ¾” sk
5. Höyrystimeltä maapiiriin 2” sk
6. Maapiiristä höyrystimelle 2” sk
1. Flow from the condenser 2” IT
2. Return into the condenser 2” IT
3. Flow from the superheater ¾” IT
4. Return into the superheater ¾” IT
5. Collector circuit,
ow from the evaporator 2” IT
6. Collector circuit,
return into the evaporator 2” IT
12
3
4
5
6
NOTE! Insert the electricity plug of the superheat pump
into the connector box if superheat circuit connected.
If cooling equipment is located higher than the ground source heat pump
is connected to the pump, a membrane expansion vessel must be
included in the system. In such cases, a de-aeration connection must be
installed to the highest point of the system and the ll container removed
from use by closing the shut-off valve underneath it (see the annexed
HVAC connections diagram).
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