Thermia ATEC Guide

Commissioning
Atec
www.thermia.com

Thermia Värmepumpar is not liable or bound by warranty if these
instructions are not adhered to during installation or service.
The English language is used for the original instructions.
Other languages are a translation of the original instructions.
(Directive 2006/42/EC)
© Copyright Thermia Värmepumpar

Table of Contents
1 About documents and decals ........................................................ 4
1.1 Introduction ................................................................ 4
1.2 Symbols in documents .......................................................... 4
1.3 Symbols on decals ............................................................ 4
2Checking piping and electrical installation ............................................... 6
2.1 Checking the piping installation .................................................... 6
2.2 Checking the electrical installation .................................................. 7
3Filling and bleeding .............................................................. 8
4Setting heat pump size ............................................................ 9
4.1 Setting heat pump size ......................................................... 9
5Configuration of control system ...................................................... 10
5.1 Select display language ......................................................... 10
5.2 Factory setting ............................................................... 10
5.3 Activation of optimum circulation (variable speed) pump ................................... 11
5.4 Set hot water start temperature and activate hot water ..................................... 11
5.5 Activate the electrical auxiliary heater in Atec Plus and Atec Total .............................. 12
5.6 Activate electrical auxiliary heater in Atec Standard ....................................... 13
5.7 Activate active cooling .......................................................... 14
5.8 Distribution circuits ............................................................ 15
6 Find start flow .................................................................. 16
6.1 Finding a start flow ............................................................ 16
7 Manual test .................................................................... 19
8 Starting up ..................................................................... 24
9 Tuning the system ................................................................ 26
10 Installation protocol and customer info ................................................. 29
11 Important information/Safety regulation ................................................ 30
11.1 General safety precautions ....................................................... 30
11.2 Refrigerant ................................................................. 31
11.3 Electrical connection ........................................................... 32
11.4 Water quality ................................................................ 32
11.5 Commissioning .............................................................. 33
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1 About documents and decals
1.1 Introduction
The following documents are available for this product:
▪Installation quick guide containing information to install a heat pump. Supplied with the heat pump on delivery.
▪The Service instructions contain information about the heat pump’s function, accessories, fault tracing and technical data. The in-
structions also contain tips and advice that should be followed before a heat pump installation. It is therefore recommended that
the instructions are read before installation. The Service instructions are available for download as below.
▪The Wiring diagrams that contain the wiring diagram for the heat pump intended for fault tracing and service. The Wiring diagrams
are available for download as below.
▪The User manual must handed over and gone through with the end customer. Supplied with the heat pump on delivery.
▪Country specific instructions and forms are available where relevant. Supplied with the heat pump on delivery.
▪Self-adhesive decals with translation text. Must be placed on the manufacturing plate in conjunction with installation. Supplied
with the heat pump on delivery.
The Service instructions and Wiring diagrams are available for download here:
www.thermia.com/documents
1.2 Symbols in documents
The instructions contain different warning symbols, which, together with text, indicate to the user that there are risks involved with ac-
tions to be taken.
The symbols are displayed to the left of the text and three different symbols are used to indicate the degree of danger:
Danger Indicates an immediate danger that leads to fatal or serious injury if necessary measures are not taken.
Warning Risk of personal injury!
Indicates a possible danger that can lead to fatal or serious injury if necessary measures are not taken.
Caution Risk of installation damage.
Indicates a possible hazard that can lead to item damage if necessary measures are not taken.
A fourth symbol is used to give practical information or tips on how to perform a procedure.
N
Information regarding making the handling of the installation easier or a possible operational technical disad-
vantage.
1.3 Symbols on decals
The following symbols can occur on decals on the different parts of the heat pump. Which symbols are used depends on the heat pump
model.
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1.3.1 General
!
Warning, danger!
!
Read the documentation provided.
Read the documentation provided.
Warning, hazardous electrical voltage!
Warning, hot surfaces!
Warning, moving parts!
Warning, risk of crushing injury!
1.3.2 Electrical components
3
Outdoor unit
50
Outdoor sensor
54
Hot water sensor
55
Hot water top sensor
71
Flow guard
353
Drip tray
362
Shunt valve
304
Circulation pump
363
Exchange valve hot water
365
Supply line sensor
366
Return line sensor
406
or
62
Room sensor
408
EVU
417
Defrost sensor
Explanation
Component, ordinary delivery according to proposed sys-
tem solutions
Component, accessorie according to proposed system sol-
utions
1.3.3 Pipe connections
Tap water
Heating system
Brine system
Defrosting tank
Expansion tank with safety valve, brine
Air bleeding
Temperature and pressure relief valve
Outdoor unit
Water heater
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2 Checking piping and electrical installation
2.1 Checking the piping installation
Before filling the heating system, check the piping installation according to the checklist below.
For further information, also see the Installation Quick Guide.
Piping checklist OK Not OK
Are the pipe connections in accordance with the connection diagram?
Are the flexible hoses on the supply and return lines installed on the outdoor unit?
Is the strainer on return line mounted? See figure 1
Is an expansion vessel installed?
Is a valve-pipe with safety valve and manometer installed?
Is a volume tank installed? See Volume tank table below
Is a filler cock with non-return valve heating system installed?
A
DCB
Fig. 1: Strainer
A: Stopcock
B: Cover
C: Strainer
D: O-ring
Warning In order to secure the defrosting of the outdoor unit, a minimum amount of water must be contained in the
heating system. This is shown in the table below.
If the heating system itself holds the amount of water described in the table, a volume tank is not needed, but recommended.
Volume tank table Unit 6 kW 9 kW 11 kW 13 kW 16 kW 18 kW
Min water volume in heating system. Atec Standard and
Atec Plus l 120 180 220 260 320 360
Min water volume in heating system. Atec Total l 60 90 110 130 160 180
N
If the amount of water in the heating system is not sufficient, Low Pressure alarms may occur.
For Atec Total, also check:
Water heater checklist OK Not OK
Bleed valve installed
For Atec Standard, also check:
External Water heater checklist OK Not OK
Exchange valve installed (factory installed in Atec Plus and Atec Total)
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2.2 Checking the electrical installation
Before turning on electrical power, check the electrical installation according to the checklist below
Electrical installation checklist OK Not OK
Are circuit-breakers installed?
One for indoor unit and one for outdoor unit (not included in the delivery)
Are correct fuses installed? See fuse table below
Positioning of the outdoor sensor. See image below
Is communication cable between heat pump and control centre connected? See Installation Quick Guide.
Especially check the shield connection.
N
Communication cable must be 2 pair shielded Twisted Pair and UV resistant for out-
door use.
Fuse table
Heat pump and control
units Unit 6 kW 9 kW 11 kW 13 kW 16 kW 18 kW
230V 1-N 50Hz heat pump A 20 32 —
230V 1-N, 50Hz control unit A 1617/3018/4019
400V 3-N 50Hz heat pump A 10 16
400V 3-N, 50Hz control unit A 1012/1613/1614/2015/2516
12) Heat pump with 3 kW additional heater.
13) Heat pump with 6 kW additional heater.
14) Heat pump with 9 kW additional heater.
15) 12 kW additional heater. (Compressor off). Power step 4
16) 15 kW additional heater. (Compressor off). Power step 5
17) Heat pump with 3 kW additional heater.
18) Heat pump with 6 kW additional heater.
19) Heat pump with 9 kW additional heater.
Positioning of the outdoor sensor
H
2/3 x H
Recommended location
Unsuitable location
▪Position the outdoor sensor on the north or north west side of the
house.
▪Make sure that the outdoor sensor is not placed in direct sun light.
▪For higher buildings, the sensor should be positioned between the
second and third storeys. Its location must not be completely pro-
tected from the wind but not in a direct draft. The outdoor sensor
should not be placed on reflective panel walls.
▪The sensor must be positioned at least 1 m from openings in the
walls that emit hot air.
▪If the sensor cable is connected through a pipe, the pipe must be
sealed so that the sensor is not affected by outgoing air.
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3 Filling and bleeding
1. Fill the system with cold water by opening the filler valve, that is on the valve pipe, to a pressure of 1 bar.
2. Open all radiator valves fully.
3. Bleed all radiators.
4. Bleed the outdoor unit. See figure 3.
5. Refill the heating system to a pressure of min. 1 bar.
6. Repeat the procedure until all air has been removed.
7. Check the system for leakage.
N
The system must be filled with antifreeze protection when the outdoor unit is operating in cooling mode un-
der a set temperature value under (< 15°C ). The reason is to avoid the potential risk of freezing of the outdoor
unit.
N
Leave all radiator valves fully open.
N
To bleed the out door unit, remove the lower front hatch and right hand side cover.
atec-043
T25
T25
Fig. 2: Remove front hatch and side cover
atec-042
Fig. 3: Bleed the outdoor unit
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4 Setting heat pump size
4.1 Setting heat pump size
N
The default heat pump size setting at shipping is NO SIZE (indicated by an asterisk next to the English text).
This means that the compressor cannot start and the installer must select a heat pump size before leaving this
menu. After the size has been set a factory reset starts and radiator heating appears as the first choice.
When power is supplied to the control unit, the first menu that appears in the display is the DIRECT EVAP. Menu. A heat pump size must
be set before configuring the control system and completing the commissioning.
To set the heat pump size initially:
▪Use the +or –buttons to select heat pump size in kW.
▪Press right arrow (>) to confirm the choice. An asterisk (*) will appear next to the chosen value.
▪Press left arrow (<) and wait until the default screen is displayed.
N
It is possible to select the heat pump size at a later stage by changing the settings in the Service Menu as
described below.
To enter the Service Menu, press and hold left arrow (<for at least 5 seconds. Use +or –to move up and down in the menu.
Set the output size of the heat pump in the menu:
▪SERVICE
▪INSTALLATION
▪SYSTEM
▪HEAT SOURCE
▪AIR
▪DIRECT EVAP.
▪Press right arrow (>) for approximately 20 seconds to enter the Heat Pump size entry.
▪Use +or –buttons to select Heat Pump size in kW.
▪Press right arrow (>) to confirm the choice. An asterisk (*) will appear next to the chosen
value.
▪Press left arrow (<) several times to navigate back to the Service Menu.
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5 Configuration of control system
N
Before configuring the control system, the installation must be completed according to the instructions in the
preceeding chapters.
N
To avoid alarms during start-up, the outdoor unit must be powered on.
N
Make the settings in the order they appear in the text that follows.
Further information about parameters in the control system are found in the Information Menu and Service Menu chapters in the Tech-
nical Description.
5.1 Select display language
After the heat pump size has been set, it is possible to select the display language. It is also possible to go back and change the size
setting using the desired language.
The following settings are made in the Information Menu. To enter the Information Menu, press left arrow(<). Use +or –to move up and
down in the menu.
Select display language in the INFORMATION menu:
▪INFORMATION
▪Press –button several times to get to the LANGUAGE entry.
▪Press right arrow (>) button to enter the LANGUAGE menu.
▪Use +or –buttons to navigate to the desired language.
▪Press right arrow (>) to chose language. An asterisk (*) will appear next to chosen language.
▪Press left arrow (<) twice to exit the Information Menu.
5.2 Factory setting
N
Each time a factory reset is executed, parameters like AUX. HEATER, DEFROST, OPTIMUM, HOT WATER, and
HEAT CURVE return to their default values. This means that parameters like AUX. HEATER, OPTIMUM, and HOT
WATER will not be active until manually activated.
The following settings are made in the Service Menu. If not already in the Service Menu, enter the Service Menu by pressing and holding
left arrow (<) for at least 5 seconds. Use +or –to move up and down in the menu.
Make a factory setting and select heating system with the parameters in the SERVICE menu:
▪SERVICE
▪INSTALLATION
▪FACTORY SET
▪Use +or –buttons to select FLOOR or RADIATOR. If CANCEL is selected, the system is reset to the default delivery
setting.
▪Press right arrow (>) to select the appropriate value. If the system is a mix of radiator and floor heating, RADIA-
TOR is chosen.
▪An asterisk (*) will appear to confirm the setting .
▪To exit factory setting, press left arrow (<) 5 times to enter Service Menu.
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5.3 Activation of optimum circulation (variable speed) pump
N
The Optimum circulation pump is factory installed in Atec Plus and Atec Total.
The OPTIMUM option is however not activated from factory.
N
If fixed speed circulation pump is used, which may be the case for Atec Standard, then skip this setting.
The following settings are made in the Service Menu. If not already in the Service Menu, enter the Service Menu by pressing and holding
left (<) arrow for at least 5 seconds. Use +or –to move up and down in the menu.
Activation of optimum (variable speed) pump in the SERVICE menu:
▪SERVICE
▪INSTALLATION
▪SYSTEM
▪OPTIMUM
▪Press right arrow (>) to enter the optimum function.
The off symbol ( ) is shown.
▪Press +to activate the optimum function.
▪ON will appear to confirm the setting.
5.4 Set hot water start temperature and activate hot water
The default hot water start temperature is 40°C.
If another start temperature is desired, change the start temperature setting in the Service Menu. If not already in the Service Menu,
enter the Service Menu by pressing and holding left arrow (<) for at least 5 seconds. Use +or –to move up and down in the menu.
Setting the hot water start temperature in the SERVICE menu:
▪SERVICE
▪Press right arrow (>) to enter HOT WATER menu
▪Press right arrow (>) to activate START sub menu
▪Press plus +to enter START sub menu
▪Press plus +to set the desired temperature.
▪Press left arrow (<) several times to exit the Service Menu
Activate hot water production
The following settings are made in the Information Menu. To enter the Information Menu, press left arrow (<). Use +or –to move up and
down in the menu.
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Activating the hot water production in the INFORMATION menu:
▪INFORMATION
▪Press minus -to get to the HOT WATER entry.
▪Press right arrow (>) to select hot water.
▪Press right arrow (>) to activate hot water sub menu.
▪Press plus +to activate the hot water production.
▪ON will appear to confirm the setting.
▪Press left arrow (<) several times to exit the Information Menu.
N
When the operation is set to HOT WATER mode, the reversing valve hot water is set towards the heating sys-
tem. To minimize the risk that the outdoor unit freezes at low outdoor temperatures (that is, below 5°C) the
reversing valve hot water is set towards the water heater and the circulation pump starts to ensure a sufficient
flow. When the outdoor temperature is above 5°C, the circulation pump stops and the reversing valve hot
water is set towards the house (the heating system) again.
5.5 Activate the electrical auxiliary heater in Atec Plus and Atec Total
If the heat demand is greater than the heat pump’s compressor capacity, the immersion heater engages automatically in operating
mode AUTO. Atec Plus and Atec Total has three outputs, IMM. HEAT 1, IMM. HEAT 2 and IMM. HEAT 3 and output can be controlled in
five steps.
The two power steps, step 4 and step 5 for Atec Plus and Atec Total cannot be activated when the compressor is running. Immersion
heater step: +4 and +5 can be selected when the compressor is running and must only be selected on the condition that the building
where the heat pump is installed has a large heating demand and the building’s electrical installation is suitable for high current con-
sumption. In the event of an alarm, the immersion heater engages automatically on the condition that operating mode AUTO is selected
and that at least one additional step is permitted.
In Atec Plus and Atec Total a multi power stage heater (IMM HEATER) is factory installed. The heat pump control system engages the
appropriate amount of heating power to ensure the desired heating system temperature. Below is a table describing the different power
steps.
In power steps 1 – 3, +4 and +5, the compressor and the electrical auxiliary heater can be engaged at the same time. In power steps 4
and 5 only the electrical auxiliary heater is engaged.
N
Power steps +4 and +5 can only be engaged for 400V 3-N electrical auxiliary heater
Caution Check installed fuses before making any settings.
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Power
steps Heating power in kW Control panel (single phase 1-N) fuse size (A) Control panel (three phase 3-N) fuse size (A)
1 3, immersion heater only 16 10
2 6, immersion heater only 30 16
3 9, immersion heater only 40 16
4 12, immersion heater only — 20
5 15, immersion heater only — 25
+4 12, immersion heater + com-
pressor — 25
+5 15, immersion heater + com-
pressor — 25
230V 1-N Electrical auxiliary heater
The following settings are made in the Service Menu. If not already in the Service Menu, enter the Service Menu by pressing and holding
left arrow (<) for at least 5 seconds. Use +or –to move up and down in the menu.
N
Electrical auxiliary heater for 230V, 1-N. Step 3 is highest setting.
Setting of electric auxiliary heater for 230V, 1-N. Max step 3 in the SERVICE menu:
▪SERVICE
▪AUX. HEATER.
▪MAX STEP
▪Select max step.
400V 3-N Electrical auxiliary heater
The following settings are made in the Service Menu. If not already in the Service Menu, enter the Service Menu by pressing and holding
left arrow (<) for at least 5 seconds. Use +or –to move up and down in the menu.
N
Electrical auxiliary heater for 400V, 3-N. Step 5 is highest setting.
5 is highest setting
Setting of electrical auxiliary heater for 400V, 3-N. Max step 5 in the SERVICE menu:
▪SERVICE
▪AUX. HEATER.
▪MAX STEP
▪Select max step.
5.6 Activate electrical auxiliary heater in Atec Standard
N
If a single power stage heater is used (on/off heater, can be an oil burner or equivalent), this setting is the
appropriate one.
The potential free outputs must be used.
If a multi power stage heater is installed, use the settings in the chapter above: "Activate the electrical auxili-
ary heater in Atec Plus and Atec Total"
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The following settings are made in the Service Menu. If not already in the Service Menu, enter the Service Menu by pressing and holding
left (<) arrow for at least 5 seconds. Use +or –to move up and down in the menu.
Activating the electric auxiliary heater in the SERVICE menu:
▪SERVICE
▪AUX HEATER
▪MAX STEP
▪P
▪Press left arrow (<) several times to exit the Service Menu.
5.7 Activate active cooling
The cooling function is primarily temperature controlled and starts when the return line sensor reaches the set value for START. Default
setting is OFF .
The heating system is cooled by reversing the heating process and distributing cold water on to the heating system.
The following settings are made in the Service Menu. If not already in the Service Menu, enter the Service Menu by pressing and holding
left arrow (<) for at least 5 seconds. Use +or –to move up and down in the menu.
Activating active cooling in the service menu:
▪SERVICE
▪COOLING
▪INTEGRATED IN HP
▪Press right arrow (>) to activate. An asterisk (*) appears.
Active cooling is configured by the parameters shown below:
Parameter Meaning
COOLING TIME When the heat pump must alternate between different demands for example heating, hot water, pool heating
and cooling, cooling will be produced according to the set number of minutes.
Factory setting: 20M, range: 5M — 40M
MAX START TEMP Outdoor temperature when the cooling should start.
Factory setting: 30°C, range: COOLING->START — 55°C
MIN STOP TEMP Supply line temperature when the cooling should stop.
NOTE: Too low temperature may result in condensation on the radiators.
Factory setting: 16°C, range: 5°C — COOLING->STOP
ROOM SENSOR Activation of room sensor function for influencing cooling production.
NOTE: Room sensor must be installed and activated.
Factory setting: , range: — ON
COOL.HYST.RS
LOW This setting is available only if ROOM SENSOR is activated The compressor is stopped if the temperature from the room sensors drops below the desired temperature mi-
nus the value set in COOL.HYST.RS LOW.
Factory setting: +1°C
COOL.HYST.RS
HIGH This setting is available only if ROOM SENSOR is activated The compressor is started when the temperature rises above the desired temperature plus the value set in
COOL.HYST.RS HIGH.
Factory setting: +1°C
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5.8 Distribution circuits
N
The only use for a mixing valve is in a heating system with an external heat source (an oil burner or equiva-
lent) or where there are more than one heating circuits, for example a mix of radiator and underfloor heating.
There are three available mixing valve options:
▪Mixing valve (Activation, see chapter "Activate the external auxiliary heater in Atec Standard")
▪Distribution circuit (DISTR. CIRCUIT) 1
▪Distribution circuit (DISTR. CIRCUIT) 2
The mixing valve is used between the heat pump, an external auxiliary heater (may be an oil burner or equivalent) and the heating
system. The purpose of this valve is to mix cold water into the heated water from the external auxiliary heater (on/off heater) to ensure
that the temperature out on the heating system is not too high. The control system in the heat pump controls the mixing of hot and cold
water out on the heating system.
Distribution circuits 1 and 2 are used where there are more than one heating circuit, for example a mix of radiator and underfloor
heating. The purpose of these distribution circuits are to supply a preset temperature to each one of the heating circuits.
Activating DISTR. CIRCUIT 1
The following settings are made in the Service Menu. If not already in the Service Menu, enter the Service Menu by pressing and holding
left arrow (<) for at least 5 seconds. Use +or –to move up and down in the menu.
Activating distribution circuit 1 in the SERVICE menu:
▪SERVICE
▪INSTALLATION
▪SYSTEM
▪DISTR. CIRCUIT 1
▪HEAT CURVE or CONSTANT TEMP
N
When HEAT CURVE is selected, the distribution circuit con-
trols to the set heat curve.
When CONSTANT TEMP is selected, distribution circuit con-
trols a constant temperature regardless of outdoor tempera-
ture.
▪Press left arrow (<) several times to exit the Service Menu.
N
DISTR. CIRCUIT 2 requires expansion card.
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6 Find start flow
6.1 Finding a start flow
Finding a suffient flow in order to activate the flow switch can be done in the following ways:
▪Automatically, using the FIND START FLOW parameter
▪Manually, setting the the START FLOW CIRC. value for the optimum circulation pump
6.1.1 Find start flow automatically
This option is only valid for a heat pump model with the optimum function.
N
If the operation mode is set to cooling, perform the start flow search on the heating system, not on the water
heater. The flow will automatically be adapted to the water heater.
N
It is important to know the source where the energy for defrosting is taken when finding a start flow. If the
parameter ENERGY PR. H.W. is OFF, the energy is taken from the heating system. If the parameter is ON, the
energy is taken from the water heater.
To be able to automatically search for a start flow, the following is required:
▪The installation must be completed and checked.
▪The heating system and water heater must be filled and bled.
▪The configuration of the control system must be completed.
▪The heat pump must be in operation OFF mode with the OFF symbol ( ) shown on the display.
▪Manual test must be deactivated (0).
▪Heating or cooling must be activated in the configuration
The following settings are made in the Service Menu. If not already in the Service Menu, enter the Service Menu by pressing and holding
left (<) arrow for at least 5 seconds. Use +or – to move up and down in the menu.
Find the start flow in the menu:
▪SERVICE
▪OPTIMUM
▪FIND START FLOW
▪Press right arrow (>) to enter the FIND START FLOW menu.
The off symbol ( ) is shown.
▪Press right arrow (>) to activate the FIND START FLOW menu.
▪Press +to activate the FIND START FLOW menu.
▪ON will appear in the display to confirm the setting.
Depending on the operation mode, the result of the flow search may be presented as follows:
Operation mode Heating
If the operation mode is heating with cooling completely tuirned off, the result will be one of the following:
▪FLOW OK
▪FLOW NOT OK
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If the flow is not OK, measures must be taken to ensure sufficient start flow, for example, install an additional circulation pump or other
equipment, such as a buffer tank, that will increase the flow enough.
Operation mode Cooling
If cooling mode is activated, the result of the flow search may be as follows:
▪FLOW OK1 = Flow is sufficient for defrost.
▪FLOW NOT OK1 = Flow is not sufficient for defrost.
or;
▪FLOW OK2 = Flow is sufficient for cooling.
▪FLOW NOT OK2 = Flow is not sufficient for cooling.
If the flow is not OK, measures must be taken to ensure sufficient start flow, for example, install an additional circulation pump or other
equipment, such as a buffer tank, that will increase the flow enough.
N
It may take a while before the search is completed and the result is displayed. You may continue with other
parts of the commissioning that are independant of the search for a start flow.
Press left arrow (<) several times to navigate back to the Service Menu.
N
The start flow found in this procedure is the actual flow that exists in the current configuration of the system.
Seasonal variations with different temperatures may alter the behavior of the system and this may affect the
flow as well. For example, automatic radiator valves may open or close depending on the temperature.
6.1.2 Find start flow manually
N
This setting is a manual alternative to the FIND START FLOW function which runs automatically when activa-
ted.
The start flow is maintained for one minute. After one minute, the circulation pump and control system takes over the speed control.
Default setting: 7V, range: 3V – 10V (30 - 100%)
The following settings are made in the Service Menu. If not already in the Service Menu, enter the Service Menu by pressing and holding
left (<) arrow for at least 5 seconds. Use +or –to move up and down in the menu.
▪SERVICE
▪OPTIMUM
▪START FLOW CIRC.
▪Press +to set the start circulation pump speed. See note below.
▪Press left arrow several times to exit the SERVICE MENU
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N
Start with a high setting, for example 10V.
Check that the circulation pump is running by listening, placing a hand on the circulation pump and listen for
air in the system.
If no flow is registered at 10V, check the system for air and bleed if necessary. See chapter "Filling and bleed-
ing". Also check that all heat system valves are open.
If flow is detected, normally within 60 seconds, decrease the setting by 10% (1V) until the flow is so low that
the Fin the default display disappears.
(You must exit the SERVICE MENU and enter the default display for each decrease in speed)
Note the last reading for the Fin the display and increase that value by 10%. This value is to be used as a
setting in START FLOW CIRC.
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7 Manual test
Caution The installation may only be commissioned if the heating system and water heater have been filled and bled.
Otherwise the circulation pump can be damaged.
Caution Any alarms that may occur in connection with the installation must be fault-traced.
7.1 Activate MANUAL TEST
N
Two people are recommended when doing the manual tests. One at the control display and one at the out-
door unit.
MANUAL TEST has three options:
▪Zero (0): deactivate manual test
▪One (1): activate manual test. This option allows navigating only within the MANUAL TEST menu
▪Two (2): activate manual test with the option of navigating out of the MANUAL TEST menu to check temperatures etc.
Set the heat pump in stand-by mode in the INFORMATION menu:
▪Press left arrow (<) to enter the INFORMATION menu .
▪Press right arrow (>) to enter the OPERAT. menu .
▪Press right arrow (>).
▪Press –button to move down to the (Off) symbol.
▪Press right arrow (>) to confirm. The asterisk * is now to the right of (Off) symbol.
▪Press left arrow several times to exit the Information Menu.
▪Enter the Service Menu by pressing and holding left (<) arrow for at least 5 seconds.
▪Press –button to navigate to the MANUAL TEST entry.
▪Press right arrow (>) to enter the MANUAL TEST menu.
▪Press +button to select option 2.
▪Press left arrow once to exit.
N
The test cases in the table below are available in MANUAL TEST. Required test cases are described in the chap-
ters that follows.
Test cases not described are optional.
Parameter Meaning
COMPRESSOR 0 = stop compressor
1 = start compressor
SYSTEM
CIRC. PUMP 0 = stop system circulation pump 1 = start system circulation pump
CIRC. PUMP 0-10V for test of speed controlled circulation pump.
Depending on type and number of connected circulation pumps, this parameter will contain different informa-
tion.
In the event of pumps with fixed speed, the selection 0 = stop and 1 = start are available
FAN 0–10V for test of the speed controlled fan
FOUR-WAY VALVE 0 = four way valve is set for heating
1 = four way valve is set for defrosting/cooling
EXPANSION VALVE 0 – 100% for test of electronic expansion valve.
SOLENOID 0 = closed solenoid
1 = open solenoid
Commissioning Atec
Thermia Värmepumpar VIGFG102 19

Parameter Meaning
COMPR.HE 0 = compressor heater off
1 = compressor heater on
DRIP TRAY 0 = drip tray heater off
1 = drip tray heater on
REV.V. HOT WATER 0 = reversing valve in heating mode
1 = reversing valve in hot water mode
IMM. HEAT 1 0 = stop of internal immersion heater power stage 1
1 = start of internal immersion heater power stage 1
IMM. HEAT 2 0 = stop of internal immersion heater power stage 2
1 = start of internal immersion heater power stage 2
IMM. HEAT 3 0 = stop of internal immersion heater power stage 3
1 = start of internal immersion heater power stage 3
EXT.AUX.HEATER 0 = stop external heat source (230V)
1 = start external heat source (230V)
POT.FREE 0 = potential free output for control of auxiliary heater open
1 = potential free output for control of auxiliary heater closed
CIRC. PUMP DC 1 0 = stop circulation pump in discharge circuit 1
1 = start circulation pump in discharge circuit 1
SHUNT DC 1 – = closes shunt in discharge circuit 1
0 = shunt unaffected
+= opens shunt in discharge circuit 1
CIRC. PUMP DC 2 0 = stop circulation pump in discharge circuit 2
1 = start circulation pump in discharge circuit 2
SHUNT DC 2 – = closes shunt in discharge circuit 2
0 = shunt unaffected
+ = opens shunt in discharge circuit 2
SYSTEM SHUNT – = closes shunt
0 = shunt unaffected
+ = opens shunt
RET.L. HP SHUNT – = closes return line shunt in systems with buffer tank
0 = shunt unaffected
+ = opens shunt in systems with buffer tank
REV. V. POOL 0 = reversing valve in normal mode
1 = reversing valve in pool mode
ALARM 0 = no voltage on output 201.6 External alarm
1 = 230V on output 201.6 External alarm
DIGITAL OUT 5V 0 = no voltage on output 204.1
1 = 5V (2mA) on output 204.1
7.2 Test the circulation pump
Optimum (variable speed) circulation pump
N
If a fixed speed circulation pump is used, may be the case for Atec Standard, do the test according to the next
chapter: "Constant speed circulation pump"
Optimum (variable speed) circulation pump is factory installed in Atec Plus and Atec Total. The OPTIMUM option is however not activa-
ted from factory.
If the flow in the circulation pumps need to be adjusted, see chapter Adaptation of the heating system.
The following settings are made in the MANUAL TEST menu. To activate MANUAL TEST, see description above. Use +or –to move up
and down in the menu.
Commissioning Atec
VIGFG102 Thermia Värmepumpar
20