IVT Rego 5101 User manual

Installation Manual
Rego 5101
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6 720 641 739-37.1I
6 720 645 172 (2010/07) en

Table of Contents
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Table of Contents
1 Key to symbols and safety precautions . . . . . . . 3
1.1 Explanation of symbols . . . . . . . . . . . . . . . 3
1.2 Safety precautions . . . . . . . . . . . . . . . . . . 3
2 I/O connections . . . . . . . . . . . . . . . . . . . . . . . . . 4
3 Control panel . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
3.1 Panel overview . . . . . . . . . . . . . . . . . . . . . 5
3.2 Status lamp . . . . . . . . . . . . . . . . . . . . . . . . 5
3.3 On/Off button . . . . . . . . . . . . . . . . . . . . . . 5
3.4 Menu display . . . . . . . . . . . . . . . . . . . . . . . 5
3.5 Return button . . . . . . . . . . . . . . . . . . . . . . 5
3.6 Navigation buttons . . . . . . . . . . . . . . . . . . 5
3.7 Alarm button . . . . . . . . . . . . . . . . . . . . . . . 5
3.8 Initial menu . . . . . . . . . . . . . . . . . . . . . . . . 6
3.9 Finding desired function and changing
values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
3.10 Operating information . . . . . . . . . . . . . . . . 8
3.11 Access levels . . . . . . . . . . . . . . . . . . . . . . . 9
4 Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
4.1 Communication . . . . . . . . . . . . . . . . . . . . 10
4.2 Settings\Addressing . . . . . . . . . . . . . . . . 11
4.3 Settings\Room temperature . . . . . . . . . . 11
4.4 Settings\Additional heat . . . . . . . . . . . . . 14
4.5 Settings\Hot water . . . . . . . . . . . . . . . . . 18
4.6 Settings\Accessories . . . . . . . . . . . . . . . . 21
4.7 Settings\Circulation pumps . . . . . . . . . . 24
4.8 Settings\Collector circuit . . . . . . . . . . . . 25
4.9 Settings\External control . . . . . . . . . . . . 25
4.10 Settings\General alarm . . . . . . . . . . . . . . 25
4.11 Settings\Inversions . . . . . . . . . . . . . . . . . 25
4.12 Settings\Sensor calibration . . . . . . . . . . 26
4.13 Function test . . . . . . . . . . . . . . . . . . . . . . 26
4.14 Quick restart . . . . . . . . . . . . . . . . . . . . . . 26
4.15 Read out . . . . . . . . . . . . . . . . . . . . . . . . . 27
4.16 Quick log-out . . . . . . . . . . . . . . . . . . . . . . 27
4.17 Factory reset . . . . . . . . . . . . . . . . . . . . . . 28
5 Information/Alarms . . . . . . . . . . . . . . . . . . . . . 29
5.1 General . . . . . . . . . . . . . . . . . . . . . . . . . . 29
5.2 Alarm categories . . . . . . . . . . . . . . . . . . . 29
5.3 Status lamp . . . . . . . . . . . . . . . . . . . . . . . 29
5.4 Alarm list and Alarm history . . . . . . . . . . 29
5.5 Acknowledgement of alarms . . . . . . . . . . 29
5.6 Alarm functions . . . . . . . . . . . . . . . . . . . . 30
5.7 Resistance table PT1000 temperature
sensor . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

Key to symbols and safety precautions
6 720 645 172 (2010/07) en 3
1 Key to symbols and safety precautions
1.1 Explanation of symbols
Warnings
Signal words indicate the seriousness of the hazard in
terms of the consequences of not following the safety
instructions.
•NOTICE indicates possible damage to property or
equipment, but where there is no risk of injury.
•CAUTION indicates possible injury.
•WARNING indicates possible severe injury.
•DANGER indicates possible risk to life.
Important information
Additional symbols
1.2 Safety precautions
General
BRead the guide carefully and keep it to hand for future
use.
Installation and commissioning
BThe heat pump may be installed and put into
operation only by a qualified installer.
Risk of damage due to operator error
Operator errors can result in injury and damage to
property.
BEnsure that children never operate this appliance
unsupervised or play with it.
BEnsure that only personnel who can operate this
appliance correctly have access to it.
Service and maintenance
BOnly qualified personnel may carry out repairs.
Incorrect repairs can lead to serious risks to the user,
and a reduction in savings.
BOnly use original spare parts.
BService and maintenance must be carried out annually
by an authorised service representative.
Safety instructions in this document are
framed and identified by a warning triangle
which is printed on a grey background.
Electrical hazards are identified by a
lightning symbol surrounded by a warning
triangle.
Notes contain important information in
cases where there is no risk of personal
injury or material losses and are identified
by the symbol shown on the left. They are
bordered by horizontal lines above and
below the text.
Symbol Meaning
Ba step in an action sequence
Æa reference to a related part in the
document or to other related documents
•a list entry
–a list entry (second level)
Tab. 1

I/O connections
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2 I/O connections
Temperature inputs PT1000 HP
Ai1 E11.T1 Flow E21
Ai2 E10.T2 Outdoor E21
Ai3 E4x.T3 Hot water E2x
Ai4 T6 Hot gas E2x
Ui1 T8 Heat transfer fluid
out (flow from heat
pump)
E2x
Ui2 T9 Heat transfer fluid
in (return to heat
pump)
E2x
Ui3 T10 Collector circuit in E2x
Ui4 T11 Collector circuit out E2x
Tab. 2 Temperature inputs PT1000
Potential-free, digital inputs 24Vac HP
Di1 IND/SSM
E11.G1
Signal circulation
pump heating
system
E21
Di2 B11 EVU / External
control
E2x
Di3 E71.E1.B31
E51.B11
E2.F21
Thermostat
Differential
pressure monitor
Additional heat
alarm
E21
Di4 E1 IND Operating reply
compressor
E2x
Di5 G2.F13 Motor cut-out heat
transfer fluid pump
E2x
Di6 G3.F13 Motor cut-out
collector circuit
pump
E2x
Di7 RLP Low pressure
switch
E2x
Di8 RHP High pressure
switch
E2x
Di7+
8
K11 Safety switch E2x
Tab. 3 Potential-free, digital inputs 24Vac
Analogue outputs 0-10Vdc HP
Ao1 E71.E1.Q71
E51.Q51
Additional heat
mixing valve,
heating system
E21
Ao2
Ao3
Ao4 G2 Heat carrier pump E2x
Ao5 G3 Collector circuit
pump
E2x
Tab. 4 Analogue outputs 0-10Vdc
Digital outputs 230Vac HP
Do1 E1 Compressor E2x
Do2 E71.E1
E2.E1
Start additional heat
Internal electric
additional heat stage
1
E2x
Do3 E2.E2 Internal electric
additional heat stage
2
E2x
Do4
E4x.Q1x
Q21
3-way valve hot water
External
Internal
E2x
Tab. 5 Digital outputs 230Vac
Digital outputs potential-free (inverted) HP
Do5 E11.G1 Circulation pump,
heating system
E21
Do6 E71.E1.G71
E31.G33
Circulation pump
mixed additional
heat
External collector
circuit pump
E21
E2x
Do7 P2 General alarm (A/
AB)
E2x
Tab. 6 Digital outputs potential-free (inverted)
Accessories Quantity HP
Mixing valve/Pool/Room
sensor (Multi-regulator)
0-9 E21
Tab. 7 Accessories

Control panel
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3 Control panel
Settings for the control of the heat pump are made with
the control unit's control panel, which also provides
information about current status.
Each heat pump is set using its control unit.
3.1 Panel overview
Fig. 1 Control panel
1Status lamp
2On/Off button
3Menu display
4Return button
5Navigation buttons
6Alarm button
3.2 Status lamp
The status lamp indications apply to the heat pump the
lamp is placed on.
3.3 On/Off button
Use the On/Off button to switch the heating installation
on and off.
When Off: The menu window shows Standby. The heat
system circulation pump E11.G1 keeps running.
Communication between the heat pumps is not
affected.
3.4 Menu display
Use the menu display in order to:
•See information from the heat pump.
•See available menus.
•Change set values.
3.5 Return button
Use to:
•Go back to the previous menu level.
•Leave a setting display without changing the set
value.
3.6 Navigation buttons
Use the arrows to navigate between the menus. Press
to initiate a value change, then use the arrows to
change the value. Press to save or to return
without saving.
3.7 Alarm button
Use to show the alarm list (status lamp lights/
flashes red). To return to the previous position, press
or .
Alarms activated in a certain pump are shown in the heat
pump in question.
The lamp lights green. The control unit is
activated.
The lamp flashes green
slowly.
The control unit is
switched off/stand-by
mode (Off).
The lamp flashes red. An alarm is active or has
not been acknowledged.
The lamp lights red. The alarm has been
acknowledged but the
alarm cause remains.
Tab. 8 Lamp functions
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4
2
1
5
6
6 720 641 739-06.1I
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Control panel
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3.8 Initial menu
BTo see the initial menu when the menu window is
unlit, press .
BPress for 5 seconds to become logged in as a
Customer (ÆChapter 3.11, page 9).
The Initial menu shows the pump in question (E21),
date, time and outdoor temperature.
BPress to show the current operating information.
BPress to move to the top menu level (Customer).
The Initial menu looks the same in all heat pumps
irrespective of the heat pump's designation.
3.9 Finding desired function and changing
values
The menu overview shows the main functions that are
reached using the navigation buttons and .
BPress in the Initial menu to move to the top
menu level (Customer).
BUse and to scroll between the available
menus at menu level.
Navigate between the menus
Change a value, e.g. heat curve at 0 °C
The heat curve is only accessible in E21.
BGo to:
BPress or to go to the next menu under Room
temperature.
Rego 5101 E21
2010-03-01 14:23
Outd. -2:0 °C Menu>
Info
Tab. 9 Initial menu
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>Room temperature
Hot water
Temperatures
Language
Tab. 10 Menu level 1 (part 1)
Language
Date/Time
>Access level
Tab. 11 Menu level 1 (part 2)
Button Function
Go to the next menu level for a menu
marked with >.
Return to the previous menu level.
Scroll between the menus at the same
level.
Tab. 12 Menu navigation
>Room temperature
Hot water
Temperatures
Language
Tab. 13 Menu level 1 (part 1)
>Summer/winter op.
Heat curve
Parallel offset
Hysteresis
Tab. 14 Room temperature 1
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Control panel
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BPress so that Heat curve is marked.
BPress or to go to the next menu level for
Heat curve.
BUse till the below is shown:
The value 35 ° shall be changed to 37 °.
BPress to come to the first adjustable value, which
is 3 in 35 °. The digit is marked and flashes.
BPress so that digit 5 in 35 ° is marked.
BUse or to change 5 to 7.
BPress to save the value. The cursor is now on the
next adjustable value in the window.
BPress one or more times to cancel an initiated
change.
After change to 37 ° the window looks like this:
Digit 3 in 38 ° is marked. Press to keep the value
and continue navigating.
Other ways of changing a value
Increase the number of digits in a value:
BPress so that the cursor is placed to the right of
the last digit in the value, and press until the
desired value is shown.
BPress to save the value or one or more times
to return without saving.
Place a decimal point in a value:
BPress so that the cursor is placed to the right of
the last digit in the value, and press . A decimal
point is included. Press and use or to
set the desired value for the decimal.
BPress to save the value or one or more times
to return without saving.
When the value has been saved, it can be presented
as a whole number, even though one or more
decimals have been added. The value in the control
unit is always the saved value.
Change to/from a negative value:
BPress to mark the position in front of the first
digit in the value. Press to include a minus sign,
press to remove a minus sign.
BPress to save the value or one or more times
to return without saving.
Change a text value:
BUse or to show the available alternatives.
Press when the desired value is displayed.
Summer/winter op.
>Heat curve
Parallel offset
Hysteresis
Tab. 15 Room temperature 2
Heat curve
Outd. Flow
20 ° 20 °
15 ° 24 °
Tab. 16 Heat curve 1
Heat curve
Outd. Flow
0 ° 35 °
-5 ° 38 °
Tab. 17 Heat curve 2
Heat curve
Outd. Flow
0 ° 37 °
-5 ° 38 °
Tab. 18 Heat curve 3
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Control panel
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3.10 Operating information
Under Info there is operating information that is reached
by pressing in the initial menu.
Operating mode: Winter operation or Summer
operation.
Demand: Shows one of the following:
Status compressor: Shows one of the following:
Rego 5101 E21
2010-03-01 14:23
Outd. -2:0 °C Menu>
Info
Tab. 19 Initial menu
Operating mode
Demand
Status compr. Time
Tab. 20 Info 1
No demand No demand for heating, hot water or
external start of the compressor.
Heating
demand
Heating demand
Hot water
demand
Hot water demand
Therm.
disinfection
Thermal disinfection
External
operation
An external unit has demanded
operation of the heat pump,
compressor and/or additional heat.
Manual
operation
Function test underway.
Tab. 21 Need
Blocked The compressor is blocked by a
tripped safety function. Information
is stored in Alarm history available at
installer level.
External
blocking
The compressor is blocked via
external control.
Off The compressor is not running.
E11.G1 is running in case of winter
operation or anti-seizure operation.
Q21/E4x.Q1x is active in case of
emergency operation, summer or
anti-seizure operation. Additional
heat is not in operation.
Press. equal. The compressor restart timer is
counting down. The time remaining
in seconds is shown.
Start-up When a demand occurs, G2 and G3
start first and run for 30 seconds to
verify function.
Checking After start-up the temperatures T6,
T8, T9, T10, T11 are checked for 3
minutes to ensure that they can
manage the protection
temperatures.
Compressor The compressor starts. T6 must rise
to a minimum of 10K above T8
within 3 minutes, otherwise the
compressor stops.
Operation The compressor runs as long as the
demand remains or external start is
active. No safety functions have
tripped, and there is no external
stop.
Stopping The compressor has stopped in this
situation. G2 and G3 run for 2
minutes. The time remaining in
seconds is shown.
Oper.+
Add.heat
Both the compressor and the
additional heat are in operation.
Tab. 22 Status compressor

Control panel
6 720 645 172 (2010/07) en 9
BUse for more information under Info.
Shows the actual value for a given sensor and the set
point for E11.T1.
Shows the actual value and stop temperature for the hot
water sensor as well as the mixing valve position. Is only
shown in heat pumps that produce hot water.
Shows the actual value for the given sensors.
0 = Off, 1 = On (ÆChapter 2, page 4 for information on
I/O-connections).
Shows present utilisation in % (ÆChapter 2, page 4 for
information on I/O-connections).
BUse several times to return to the Initial menu.
Information is also available at different places in the
menus, e.g. under Temperatures at the top menu level.
3.11 Access levels
Log in must be done per heat pump.
Log in as a customer:
BPress for 5 seconds in the Initial menu.
Log in as installer:
BEnter password mmdd under Access level.
mm = current month
dd = current day
E.g.: 0315 = 15th March.
Logging out:
BUse function Quick log-out on installer level or wait.
External sensors
E11.T1 35:2 °C
E11.T1 spv 36.2 °C
E10.T2 3.9 v °C
Tab. 23 External sensors 1
External sensors
E41.T3 56.4 °C
Stop 57.0 °C
E41.Q11 Off
Tab. 24 External sensor 2
Internal sensors
T6 87.0 ( °C)
T8 36.2 T10 5.0
T9 29.2 T11 2.0
Tab. 25 Internal sensors
Status digital I/O
vvvvv1 2 3 4 5 6 7 8
In: vv0 0 0 1 1 1 1 1
Out: 1 0 0 0 1 0 1
Tab. 26 Status digital I/O
Status analogue out
Ao1: 0.0 (%)
Ao2: 0.0 Ao4: 64:3
Ao3: 0.0 Ao5: 52.8
Tab. 27 Status analogue out
Program version
x.x–x–xx
Tab. 28 Program version
Not logged in See a small number of settings.
Customer See and change customer settings.
Logging out after 10 min.
Installer According to the Customer and see
and change more settings. Logging
out after 30 min.
Tab. 29 Access levels
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Settings
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4 Settings
After logging on as installer (ÆChapter 3.11, page 9)
Installer is displayed directly under Access level on the
top menu level. Menu line Communication is displayed
before Access level.
Under Installer are the following main functions:
•Settings
•Function test
•Quick restart
•Read out
•Quick log-out
•Factory reset
All settings are made under Settings. This section
includes:
•Addressing
•Room temperature
•Additional heat
•Hot water
•Accessories
•Circulation pumps
•Collector circuit
•External control
•General alarm
•Inversions
•Sensor calibration
Menu tables
The available functions and settings are shown in the
following menu tables.
Factory: Pre-set values, most of which can be changed.
Range: Gives available setting alternatives or possible
value limitations.
HP: Gives the heat pump in which the function is
available.
4.1 Communication
Settings at customer level are in the User
Manual for Greenline HE.
Always set E21 first. Most settings are made
here because for example Additional heat
and accessories are connected to this heat
pump. The settings in E21 also affect other
heat pumps.
Setting Factory Range HP
Communication
Modbus server
Address:
Speed:
1,8,N,2
1
19200 bps
1-247
2400
4800
9600
19200
E2x
BSet the valid address for the heat pump. Each heat pump must have a unique address.
The function is used for monitoring/control from external equipment (3rd party). Data is retrieved separately from all units
that are to be monitored. The communication is Modbus/RTU, RS485.
Operation times, operating status, alarm status, temperatures, set point values, limit values etc are read off via
communication. The set point values can be changed and the heat pump can be force started and force stopped.
The settings do not affect the heat pump operation or cooperation.
Tab. 30 Communication

Settings
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4.2 Settings\Addressing
4.3 Settings\Room temperature
Setting Factory Range HP
Addressing
Heat pumps
Number:
This HP:
1
E21
1- 9
E21- E29
E21
E2x
BSet the number of heat pumps in E21.
BState the valid designation of the heat pump in each heat pump in accordance with the system drawing.
By setting Number and This HP all cooperation, addressing and port setting is arranged automatically.
Tab. 31 Addressing
Setting Factory Range HP
Room temperature
Summer/winter
op.
Summer operation
Start:
T2 >
in
17 °C
180 min
E21
Winter operation
T2 <
in
15 °C
300 min
E21
Winter operation
Direct start:
T2 < 7 °C
E21
BSet the outdoor temperature that is required for changeover to summer operation, and the delay
that applies.
BSet the outdoor temperature that is required for changeover to winter operation, and the delay
that applies.
BSet the outdoor temperature at which winter operation shall start directly, without a delay.
Delays prevent repeated stops and starts of the heating system circulation pump when the outdoor
temperature fluctuates above and below the limit.
Basic setting Basic setting
DOT
Min
Max
-35 °C
20 °C
60 °C
E21
The factory settings refer to radiator systems. For underfloor heating systems only, 35 °C is
recommended as the highest flow set point. Other applications may require other values.
BSet the minimum outdoor temperature for the heat curve (DOT), and the lowest and highest flow
temperature set points.
Heat curve E21
The flow temperature set points at different outdoor temperatures are automatically calculated using
the values in Basic setting, ÆChapter 4.3.1 for example on heat curve for radiator systems and
underfloor systems. Values can be changed individually, for example adjusting the heat curve at 0 °C.
Parallel offset Parallel offset 0 K E21
BEnter by how many degrees the flow temperature at the curve's outdoor temperatures shall be
adjusted down or up.
Tab. 32 Room temperature

Settings
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4.3.1 Heat curve
The heat pump operates by holding flow temperature
E11.T1 in relation to outdoor temperature E10.T2
according to the set heat curve.
The appearance of the heat curve depends on settings
for the minimum outdoor temperature (DOT, factory
setting -35 °C), lowest flow set point (factory setting
20 °C) and highest flow set point (60 °C). This heat
curve is appropriate for radiator systems.
Fig. 2 Radiator system
When the factory setting is changed, the heat curve is
redrawn automatically. Any adjustments to the curve
disappear.
The curve is set in E21 and applies to all heat pumps.
Example of a floor heating curve:
Fig. 3 Floor heating
Hysteresis Hysteresis
Min
Max
Time factor
2 K
8 K
30
E2x
Hysteresis
Actual v.
E11.T1
Set point
Display K
Display °C
Display °C
E2x
The factory settings refer to heating systems with normal flow. For low flow systems Min 3 K, Max 16
K is recommended. For high flow systems (floor heating) Min 1 K, Max 4 K is recommended.
BSet the minimum and maximum hysteresis and time factor for hysteresis reduction after start/stop.
Current hysteresis, as well as actual value and set point for E11.T1 are shown.
Attenuation
E10.T2
Attenuation E10.T2 2h E21
The function means that the set point for the flow temperature is successively adjusted with respect
to the set point at the current outdoor temperature. This reduces the effect of brief fluctuations in
outdoor temperature.
BSet the time for the flow temperature set point to reach the current curve value.
Deviation E11.T1 Deviation E11.T1 10 K E21
BSet how much lower/higher than the set point T1 must be for 30 min to give an alarm
(ÆChapter 5.6.32, page 34).
Setting Factory Range HP
Tab. 32 Room temperature
6 720 614 789-15.3I
T
1(˚C)
T2(˚C)
20 15 10 5 0 -5 -10 -15 -20 -25 -30 -35
80
70
60
50
40
30
20
10
6 720 641 739-54.1I
T
1(˚C)
T2(˚C)
20 15 10 5 0 -5 -10 -15 -20 -25 -30 -35
80
70
60
50
40
30
20
10

Settings
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BDraw in your own curve:
Fig. 4 Own curve
4.3.2 Hysteresis
Hysteresis floats between a max value and a min value.
A time factor determines the time it takes to go from
maximum to minimum value.
The values are set in each heat pump. The current
hysteresis is calculated and displayed in each heat pump
as well as E11.T1's actual value and set point value. The
heat pump that has been out of operation the longest
starts first, that which has operated longest stops first.
4.3.3 Heating demand
The heating demand is activated in each heat pump
when E11.T1 falls below the heat curve set point with
current hysteresis. The heating demand is deactivated
when E11.T1 exceeds the set point with current
hysteresis.
Hot water mode and external control are superior
functions.
No heat is produced in summer operation, apart from for
a pool if applicable.
6 720 641 739-53.1I
T
1(˚C)
T2(˚C)
20 15 10 5 0 -5 -10 -15 -20 -25 -30 -35
80
70
60
50
40
30
20
10

Settings
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4.4 Settings\Additional heat
The tables display the settings for different types of
additional heat:
•Internal add. heat E2 (3 step)
•District heating E51
•Modulated add. heat E71
•Mixed add. heat E71
BRead more about additional heat (ÆChapter 4.4.1 -
4.4.7).
Setting Factory Range HP
Additional heat
Additional heat type No additional heat
Comp. + add. heat
No additional heat
Internal add. heat
District heating
Modulated add. heat
Mixed add. heat
Only additional heat
Comp. + add. heat
Only compressor
E21
BSet applicable Additional heat type and desired additional heat operation. In Internal add.
heat is shown:
Settings Start E2.E1
Hysteresis
Delay
Actual v.:
3 K
180 °min
Display, can be changed
E21
Start E2.E2
Delay
Actual v.:
60°min
Display, can be changed
Start E2.E3
Delay
Actual v.:
60°min
Display, can be changed
Stop E2.E1
Delay
Actual v.:
10°min
Display, can be changed
Stop E2.E2
Delay
Actual v.:
5°min
Display, can be changed
Stop E2.E3
Delay
Actual v.:
5°min
Display, can be changed
Settings
Max no. of steps in:
Heating:
Hot water:
2
2
0, 1, 2, 3
0, 1, 2, 3
BSet conditions for when respective stages must connect/disconnect.
BSet how many steps may be used as a maximum for heating mode and hot water mode.
ECO-drive ECO-drive
Start
Stop after
No
22:00
6 hr
No, Yes
00:00 - 23:59
E21
BIndicate Yes if activation of the additional heat is to be delayed during a set time period.
The delay increases by 25% for the first stage.
Tab. 33 Internal electric additional heat

Settings
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Setting Factory Range HP
Additional heat
Additional heat type No additional heat
Comp. + add. heat
No additional heat
Internal add. heat
District heating
Modulated add. heat
Mixed add. heat
Only additional heat
Comp. + add. heat
Only compressor
E21
BSet applicable Additional heat type and desired additional heat operation. In District heating
is shown:
Settings Start E51
Hysteresis
Delay
Actual v.:
3 K
180 °min
Display, can be changed
E21
Stop E51
Delay
Actual v.:
10°min
Display, can be changed
PID E51
P:
I:
D:
T1, Sp, Out
1
100
0
Display
BSet conditions for engaging/disengaging the additional heat.
BSet values for mixing valve control.
Actual and set point value for T1 is shown. In addition the output signal is shown in %.
ECO-drive ECO-drive
Start
Stop after
No
22:00
6 hr
No, Yes
00:00 - 23:59
E21
BIndicate Yes if activation of the additional heat is to be delayed during a set time period.
The delay increases by 25%.
Tab. 34 Additional heat District heating

Settings
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16
4.4.1 Internal add. heat
The internal additional heat has three steps, E2.E1 (4.5
kW), E2.E2 (4.5 kW) and E2.E3 (6.75 kW). When all
stages are connected a total of 15.75 kW is obtained. A
degree minute calculation is used to activate each stage.
E2.E1: The compressor is running and E11.T1 does not
reach its set point value. Calculation of difference
between E11.T1 set point value – set Hysteresis (3 K)
and E11.T1 actual value are added continuously. When
the sum reaches the value set in Delay (180 °min) stage
1 is activated.
E2.E2: Stage 1 is connected and E11.T1 does not reach
its set point value. Calculation of difference between
E11.T1 set point value – set Hysteresis (3 K) and E11.T1
actual value are added continuously. When the sum
reaches the value set in Delay (60 °min) stage 2 is
activated.
E2.E3: Stage 2 is connected and E11.T1 does not reach
its set point value. Calculation of difference between
E11.T1 set point value – set Hysteresis (3 K) and E11.T1
actual value are added continuously. When the sum
Setting Factory Range HP
Additional heat
Additional heat type No additional heat
Comp. + add. heat
No additional heat
Internal add. heat
District heating
Modulated add. heat
Mixed add. heat
Only additional heat
Comp. + add. heat
Only compressor
E21
BSet applicable Additional heat type and desired additional heat operation. In Modulated add.
heat and Mixed add. heat is shown:
Settings Start E71
Hysteresis
Delay
Actual v.:
3 K
180 °min
Display, can be changed
E21
Stop E71
Delay
Actual v.:
10°min
Display, can be changed
PID E71
P:
I:
D:
T1, Sp, Out
1
100
0
Display
BSet conditions for engaging/disengaging the additional heat.
BSet values for mixing valve control.
Actual and set point value for T1 is shown. In addition the output signal is shown in %.
Alarm delay Alarm delay 30 min E21
The function is only displayed at Mixed add. heat.
BSet with what time alarm External add. heat out of order is to be delayed (ÆChapter 5.6.25,
page 33).
ECO-drive ECO-drive
Start
Stop after
No
22:00
6 hr
No, Yes
00:00 - 23:59
E21
BIndicate Yes if activation of the additional heat is to be delayed during a set time period.
The delay increases by 25%.
Tab. 35 Modulated additional heat, Mixed additional heat

Settings
6 720 645 172 (2010/07) en 17
reaches the value set in Delay (60 °min) stage 3 is
activated.
Disconnection: Stage 3 is disconnected when the degree
minute calculation for the difference between E11.T1
actual value and E11.T1 set point value reaches the set
Delay (5 °min). The same applies to stage 2. Stage 1 is
disconnected when the degree minute calculation
reaches the set Delay (10 °min).
The additional heat demand ceases when all stages are
disconnected.
When the internal additional heat is activated the max
limit for T8 is increased to 75 °C. The limit is reset to
65 °C when the additional heat is disconnected.
4.4.2 Modulated add. heat E71
The external additional heat is controlled with 0-10V and
regulated using a PID regulator to maintain the E11.T1
set point value.
A degree minute calculation is used for connection/
disconnection.
Connection: E11.T1 does not reach its set point value.
Calculation of difference between E11.T1 set point
value – set Hysteresis (3 K) and E11.T1 actual value are
added continuously. When the sum reaches the value set
in Delay (180 °min) the additional heat is activated.
The output signal from the PID regulator controls how
much additional heat shall be produced.
Disconnection: The additional heat is disconnected
when the degree minute calculation for the difference
between E11.T1 actual value and E11.T1 set point value
reaches the set Delay (10 °min). The calculation starts
when the output signal from the PID regulator is 0.
4.4.3 Mixed add. heat E71
The external additional heat Q71 mixing valve is
controlled with 0-10V and regulated using a PID
regulator to maintain the E11.T1 set point value.
A degree minute calculation is used for connection/
disconnection.
Connection: E11.T1 does not reach its set point value.
Calculation of difference between E11.T1 set point
value – set Hysteresis (3 K) and E11.T1 actual value are
added continuously. When the sum reaches the value set
in Delay (180 °min) the additional heat is activated.
The additional heat and any internal circulation starts.
When the thermostat E71.E1.P111 acknowledges that
the additional heat has reached its operating
temperature mixing commences.
The output signal from the PID regulator controls how
much additional heat shall be produced.
Disconnection: The additional heat is disconnected
when the degree minute calculation for the difference
between E11.T1 actual value and E11.T1 set point value
reaches the set Delay (10 °min). The calculation starts
when the output signal from the PID regulator is 0.
4.4.4 District heating E51
Differential pressure switch E51.B11 at the district
heating heat exchanger must indicate the correct
direction of flow to permit opening of mixing valve Q51.
Q51 is controlled with 0-10V and regulated using a PID
regulator to maintain the E11.T1 set point value.
A degree minute calculation is used for connection/
disconnection.
Connection: E11.T1 does not reach its set point value.
Calculation of difference between E11.T1 set point
value – set Hysteresis (3 K) and E11.T1 actual value are
added continuously. When the sum reaches the value set
in Delay (180 °min) the additional heat is activated.
The output signal from the PID regulator controls how
much additional heat shall be produced.
Disconnection: The additional heat is disconnected
when the degree minute calculation for the difference
between E11.T1 actual value and E11.T1 set point value
reaches the set Delay (10 °min). The calculation starts
when the output signal from the PID regulator is 0.
4.4.5 Additional heat alarm
On alarm from the additional heat all degree minute
calculations are reset.
4.4.6 Additional heat operation
Normally Comp. + add. heat applies. When Only
additional heat is set the additional heat is activated
instead of the compressor during a heat demand.
In Internal add. heat the additional heat is also activated
during a hot water demand.
4.4.7 Hysteresis E11.T1
When an additional heat demand exists the hysteresis
for E11.T1 is held at its maximum.
4.4.8 PID regulator
P factor regulation is used.

Settings
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4.5 Settings\Hot water
Setting Factory Range HP
Hot water
Hot water type No hot water No hot water
Local sensor
Communicated
Previous HP
E2x
Not E21
When the heat pump is to produce hot water:
BEnter how the heat pump is to control hot water production.
BSelect Local sensor when there is a locally connected hot water cylinder with local sensor to
measure the hot water temperature.
BSelect Previous HP when the heat pump receives values for the hot water temperature from
the previous heat pump.
BSelect Communicated when the heat pump has all information about the hot water
temperature and start/stop limits via communicating (Modbus) control (ÆChapter 4.1,
page 10).
Temperatures Actual v.:
Start:
Stop:
Max temperature:
Display
53 °C
57 °C
Display
E2x
BSet start and stop values for hot water production.
The factory settings refer to heat pumps with Local sensor. In Previous HP 2 K lower
temperatures are recommended. In Communicated the values have no meaning.
Max temperature displays the calculated possible highest hot water temperature.
Tab. 36 Hot water

Settings
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Settings
(Hot water type =
Local sensor)
Settings
Alarm setting
Alarm limit:
Delay
45 °C
30 min
E2x
BSet with what time alarm Low temperature T3 hot water is to be delayed (ÆChapter 5.6.34,
page 34).
Settings
Valve:
Emergency operation:
External
No
External, Internal
No, Yes
E2x
BEnter type of three-way valve to get the correct designation in the control unit.
External = E4x.Q1x, Internal= Q21
BIndicate Yes if Emergency operation for hot water should be able to occur in event of
problems, ÆChapter 4.5.3, page 20 for description of the function.
Settings
Monitor E11.T1:
Set point - T1 >
Delay
No
10 K
10 min
No, Yes
E2x
BSelect Yes when the heat pump must monitor E11.T1 during hot water production.
BEnter the maximum number of degrees (K) the flow temperature T1 may be below its set point
value.
BEnter how long the flow temperature must be below the set limit before the heat pump
changes to heating mode.
At more than one heat pump all heat pumps except E21 switch to heating mode 2 degrees (K)
below E21's limit (10 K-2 K = 8 K at 10 K factory value ).
Settings
Heat protection:
T1 - Set point>
T1 increase >
No
10 K
15 K
No, Yes
E2x
BSelect Yes when the heat pump must monitor E11.T1 during hot water production.
BEnter the maximum number of degrees (K) the flow temperature T1 may exceed its set point
value and how many degrees (K) T1 may increase during hot water production.
When both conditions are fulfilled the heat pump gives an alarm Problem with E4x.Q1x 3-way
valve or Problem with Q21 3-way valve (ÆChapter 5.6.21, page 33).
Therm. disinfection
(Hot water type =
Local sensor)
Therm. disinfection
Day:
Start:
Number of steps:
No
02:00
1
No, Yes
None, Day, All
00:00 - 23.59
1, 2, 3
E21
BSelect Yes if thermal disinfection is to occur. Indicate frequency and time of start.
BSelect number of stages for the internal electric additional heat that is to be used by the
function.
The function can only occur in heat pumps with internal electric additional heat. It starts
according to settings and is active until T3 exceeds 70 °C or has operated for three hours. If
70 °C is not reached in that time an alarm is given Therm. disinfection unsuccessful
(ÆChapter 5.6.43, page 35), and a new attempt is made on the next occasion.
TwinKick
(Hot water type =
Local sensor)
TwinKick No No, Yes E21
(installation
with 1 HP)
BSelect Yes if the function should be active.
After heating mode a hot water demand is initiated if the hot water is lower than half the
difference to the stop limit. After hot water production a heating demand is initiated if the flow
temperature is lower than one degree below the set point value. Hysteresis is set to maximum.
Setting Factory Range HP
Tab. 36 Hot water

Settings
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4.5.1 Hot water temperatures
A start temperature and a stop temperature is set for
E4x.T3. If the sensor is local T9 is automatically set to
the same stop temperature in the heat pump.
Highest permitted stop temperature for hot water
decreases when T11 (heat transfer fluid out) in the heat
pump falls below - 2 °C. If necessary the control unit also
adjusts the start temperature so that it is below the stop
temperature by at least 2 K.
4.5.2 Hot water demand
Hot water demand arises when T3 falls below its start
temperature and ceases when T3 exceeds its stop
temperature. With a local sensor, T9 must also exceed
the stop limit.
4.5.3 Emergency operation, hot water
If the function is activated and local sensor T3 is not
working, hot water production is switched over to
emergency mode. 120 minutes after the previous hot
water production, the 3-way valve switches over to hot
water and a start signal is given to G2. This happens
whether the compressor is running or not. If T9 is below
the T3 start temperature, hot water demand is activated,
otherwise the 3-way valve changes back to its previous
position. The hot water demand ceases when T9
exceeds its and T3's joint stop temperature.