REMKO EFS Series User manual

Operating and
installation instructions
Read the instructions prior to performing any task!
REMKO EFS series
RS 2020
Fresh water station controller
0325-2022-11 Edition 1, en_GB
Instructions for users and specialists

Translation of the original
Read these operating instructions carefully before commis-
sioning / using this device!
These instructions are an integral part of the system and must
always be kept near or on the device.
Subject to modifications; No liability accepted for errors or mis-
prints!

Table of contents
1 Safety and usage instructions............................................................................................................. 4
1.1 General safety notes....................................................................................................................... 4
1.2 Identification of notes...................................................................................................................... 4
1.3 Personnel qualifications.................................................................................................................. 4
1.4 Dangers of failure to observe the safety notes................................................................................ 4
1.5 Safety-conscious working............................................................................................................... 4
1.6 Safety instructions for the operator................................................................................................. 5
1.7 Safety notes for installation and inspection tasks........................................................................... 5
1.8 Unauthorised modification and changes......................................................................................... 5
1.9 Intended use................................................................................................................................... 6
1.10 Safety-conscious working............................................................................................................. 6
1.11 Warranty........................................................................................................................................ 6
1.12 Transportation and packaging....................................................................................................... 6
1.13 Environmental protection and recycling........................................................................................ 6
2 Technical data........................................................................................................................................ 7
2.1 Unit data.......................................................................................................................................... 7
2.2 Device dimensions.......................................................................................................................... 8
3 Unit description..................................................................................................................................... 8
4Assembly and installation.................................................................................................................... 8
4.1 Mounting......................................................................................................................................... 8
4.2 Electrical connection....................................................................................................................... 9
5 Operation and function....................................................................................................................... 13
6 Commissioning................................................................................................................................... 19
6.1 Commissioning.............................................................................................................................. 19
6.2 Main menu.................................................................................................................................... 25
6.3 Status............................................................................................................................................ 27
6.4 Hot water....................................................................................................................................... 31
6.5 Cascade........................................................................................................................................ 34
6.6 Optional functions......................................................................................................................... 35
6.7 Basic settings................................................................................................................................ 41
6.8 SD card......................................................................................................................................... 42
6.9 User code...................................................................................................................................... 44
6.10 Manual mode.............................................................................................................................. 44
7 Troubleshooting.................................................................................................................................. 45
7.1 General notes................................................................................................................................ 45
7.2 Troubleshooting............................................................................................................................ 45
8 Index..................................................................................................................................................... 48
3

1 Safety and usage
instructions
1.1 General safety notes
Carefully read the operating manual before com-
missioning the units for the first time. It contains
useful tips and notes such as hazard warnings to
prevent personal injury and material damage.
Failure to follow the directions in this manual not
only presents a danger to people, the environment
and the system itself, but will void any claims for
liability.
Keep this operating manual and the refrigerant
data sheet near to the units.
1.2 Identification of notes
This section provides an overview of all important
safety aspects for proper protection of people and
safe and fault-free operation.The instructions and
safety notes contained within this manual must be
observed in order to prevent accidents, personal
injury and material damage.
Notes attached directly to the units must be
observed in their entirety and be kept in a fully
legible condition.
Safety notes in this manual are indicated by sym-
bols. Safety notes are introduced with signal words
which help to highlight the magnitude of the danger
in question.
DANGER!
Contact with live parts poses an immediate
danger of death due to electric shock. Damage
to the insulation or individual components may
pose a danger of death.
DANGER!
This combination of symbol and signal word
warns of a situation in which there is immediate
danger, which if not avoided may be fatal or
cause serious injury.
WARNING!
This combination of symbol and signal word
warns of a potentially hazardous situation,
which if not avoided may be fatal or cause
serious injury.
CAUTION!
This combination of symbol and signal word
warns of a potentially hazardous situation,
which if not avoided may cause injury or mate-
rial and environmental damage.
NOTICE!
This combination of symbol and signal word
warns of a potentially hazardous situation,
which if not avoided may cause material and
environmental damage.
This symbol highlights useful tips and recom-
mendations as well as information for efficient
and fault-free operation.
1.3 Personnel qualifications
Personnel responsible for commissioning, opera-
tion, maintenance, inspection and installation must
be able to demonstrate that they hold a qualifica-
tion which proves their ability to undertake the
work.
1.4 Dangers of failure to observe
the safety notes
Failure to observe the safety notes may pose a risk
to people, the environment and the units. Failure to
observe the safety notes may void any claims for
damages.
In particular, failure to observe the safety notes
may pose the following risks:
nThe failure of important unit functions.
nThe failure of prescribed methods of mainte-
nance and repair.
nDanger to people on account of electrical and
mechanical effects.
1.5 Safety-conscious working
The safety notes contained in this manual, the
existing national regulations concerning accident
prevention as well as any internal company
working, operating and safety regulations must be
observed.
REMKO EFS series
4

1.6 Safety instructions for the oper-
ator
The operational safety of the units and compo-
nents is only assured providing they are used as
intended and in a fully assembled state.
nThe units and components may only be set up,
installed and maintained by qualified per-
sonnel.
nThe existing regulations concerning accident
prevention must be adhered to.
nDo not operate units or components with
obvious defects or signs of damage.
nContact with equipment parts or components
can lead to burns or injury.
nEnsure that electrical energy does not pose a
risk.
nRegulations of the VDE and the local energy
supply company must be adhered to.
NOTICE!
Material damage due to mineral oils!
Mineral oil products permanently damage
EPDM seal elements; the sealing properties
may therefore be lost. We do not take responsi-
bility or provide warranty replacements for
damage caused by seals that are damaged in
this way.
–It is essential that you prevent EPDM from
coming into contact with mineral oil sub-
stances.
–Use a lubricant that is free of mineral oil and
has a silicone or polyalkylene basis, such
as Unisilkon L250L and Syntheso Glep 1
made by Klüber, or a silicon spray.
1.7 Safety notes for installation and
inspection tasks
nThe operator must ensure that all inspection
and installation work is carried out by author-
ised and qualified personnel who have thor-
oughly read the operating manual.
nWorks on the pump/system may only be car-
ried out whilst at a standstill as a matter of prin-
ciple.
nAppropriate hazard prevention measures must
be taken to prevent risks to people when per-
forming installation, repair, maintenance or
cleaning work on the units.
nThe setup, connection and operation of the
units and its components must be undertaken
in accordance with the usage and operating
conditions stipulated in this manual and comply
with all applicable regional regulations.
nRegional regulations and laws as well as the
Water Ecology Act must be observed.
nThe power supply should be adapted to the
requirements of the units.
nThe units and components must be kept at an
adequate distance from flammable, explosive,
combustible, abrasive and dirty areas or
atmospheres.
nSafety devices may not be modified or
bypassed.
NOTICE!
Malfunction!
The fresh water module must be integrated into
the equipotential bonding system of the elec-
trical installation. If this is not ensured by the
pipe network, set up an approved potential
equalisation connection to the main potential
connection.
1.8 Unauthorised modification and
changes
The operational safety of the fresh water module
that was delivered is guaranteed only with
intended use in accordance with section 1.8 of the
operating instructions. Under no circumstances
should the threshold values specified in the data-
sheet be exceeded.
Modifications or changes to units and components
are not permitted and may cause malfunctions.
Safety devices may not be modified or bypassed.
Original replacement parts and accessories
authorised by the manufacturer ensure safety. The
use of other parts may invalidate liability for
resulting consequences.
5

1.9 Intended use
The fresh water controller, subsequently referred to
as the controller, is an independent, mounted elec-
tronic temperature controller for assembly and
installation. Integration in a pump group is possible
if the technical data of the controller is complied
with. The maintenance-free controller is provided
exclusively for controlling and monitoring a
REMKO fresh water station. Use only REMKO
accessories in conjunction with the controller.
Any different or additional use is a non-intended
use. The manufacturer/supplier assumes no lia-
bility for damages arising from a non-intended use.
The user bears the sole risk in such cases.
Intended use also includes working in accordance
with the operating and installation instructions and
complying with the maintenance requirements.
The threshold values specified in the technical
data must not be exceeded.
1.10 Safety-conscious working
The safety notes contained in this manual, the
existing national regulations concerning accident
prevention as well as any internal company
working, operating and safety regulations must be
observed.
1.11 Warranty
For warranty claims to be considered, it is essential
that the ordering party or its representative com-
plete and return the "certificate of warranty" to
REMKO GmbH & Co. KG at the time when the
units are purchased and commissioned.
The warranty conditions are detailed in the "Gen-
eral business and delivery conditions". Further-
more, only the parties to a contract can conclude
special agreements beyond these conditions. In
this case, contact your contractual partner in the
first instance.
1.12 Transportation and pack-
aging
The units are shipped in sturdy transport pack-
aging or within the heat pump housing. Immedi-
ately check the units on delivery and make a note
of any damage or missing parts on the delivery
note. Inform the forwarding agent and contractual
partner. Claims under guarantee made at a later
date will not be accepted.
WARNING!
Plastic films and bags etc. are dangerous
toys for children!
Why:
- Leave packaging material are not around.
- Packaging material may not be accessible to
children!
1.13 Environmental protection and
recycling
Disposing of packaging
All products are packed for transport in environ-
mentally friendly materials. Make a valuable contri-
bution to reducing waste and sustaining raw mate-
rials. Only dispose of packaging at approved
collection points.
Disposing of the units and their components
For the manufacture of the units and components,
only recyclable materials have been used. Help
protect the environment by ensuring that the units
or components (for example batteries) are not dis-
posed of in household waste, but only in accord-
ance with local regulations and in an environmen-
tally safe manner, e.g. using authorised disposal
and recycling specialists or council collection
points.
REMKO EFS series
6

2 Technical data
2.1 Unit data
Series RS 2020
Inputs
Ttemperature sensors 4 Pt1000
Flow rate sensor 1 (0-500-Hz-interface)
Outputs
Semiconductor relays and 2 PWM outputs 3
Potential-free extra-low voltage relay 1
Switching capacity
V 1 (1) A 240 V~ (Semiconductor relay)
V1 (1) A 30 V (Potential-free extra-low voltage
relay)
Total switching capacity A 4 A 240 V~
General
Power supply V/Hz 100 … 240 V~ (50 … 60 Hz)
Supply connection Type Y attachment
Mode of operation Type 1.B.C.Y action
Rated impulse voltage kV 2,5
Data interface
VBus®
Cascade bus
MicroSD card slot
VBus® current supply mA 60
Housing Plastic, PC-ABS and PMMA
Mounting Wall mounting, also suitable for mounting into patch
panels
Indication / Display
Graphic display
Operating control LED (Lightwheel®)
Operation 4 buttons and 1 adjustment dial (Lightwheel®)
Ingress protection IP 20 / DIN EN 60529
Protection class I
Ambient temperature °C 0 ... 40 °C
Degree of pollution 2
Dimensions (L x W x H) mm 166 x 110 x 47
Information provided without guarantee! We reserve the right to make technical changes within the frame-
work of technical advancement.
7

2.2 Device dimensions
110
166 130
47
Fig. 1: Device dimensions
Information provided without guarantee! We reserve the right to make technical changes within the frame-
work of technical advancement.
3 Unit description
The device excels:
nCustomised control for systems with or without
circulation
nFlexible circulation function for different user
profiles, also available with thermal disinfection
nControl of PWM pumps
nCommissioning menu for easy configuration
nClear system graphic in the status menu
nCascades of up to 6 DHW exchange control-
lers or stations
4 Assembly and installa-
tion
4.1 Mounting
DANGER!
Danger of death due to electric shock!
- Disconnect the controller from the power
supply before opening the housing.
- Ensure that the power supply cannot be
switched on inadvertently when the housing is
open.
Strong electromagnetic fields can impair the
function of the device.
Make sure the device as well as the system are
not exposed to strong electromagnetic fields.
Normally, exchange controller is integrated in a
DHW exchange module.
The device must only be located in dry interior
rooms.
REMKO EFS series
8

4.2 Electrical connection
DANGER!
Danger of death due to electric shock!
- Disconnect the controller from the power
supply before opening the housing.
- Ensure that the power supply cannot be
switched on inadvertently when the housing is
open.
NOTICE!
ESD damage
Electrostatic discharge can lead to damage to
electronic components!
–Take care to discharge properly before
touching the inside of the device! To do so,
touch a grounded surface such as a radi-
ator or tap!
Important instructions
nConnecting the device to the power supply
must always be the last step of the installation!
nIt must be possible to disconnect the device
from the mains at any time.
- Install the mains plug so that it is accessible
at any time.
- If this is not possible, install a switch that can
be accessed.
If the mains cable is damaged, it must be
replaced by a special connection cable which
is available from the manufacturer or its cus-
tomer service.
nDo not use the device if it is visibly damaged!
The controller is equipped with 4 relays in total to
which loads such as pumps, valves, etc. can be
connected:
Relays 1 … 3 are semiconductor relays, designed
for pump speed control:
- Conductor R1 … R3
- Neutral conductor N
- Protective earth conductor
Relay 4 is a potential-free low voltage relay
nThe pump speed must be set to 100 % when
auxiliary relays or valves are connected.
nThe cables of the controller are pre-connected.
This chapter is for information purposes only.
Make sure the hydraulic system is properly
grounded!
Depending on the product version, mains cables
and sensor cables are already connected to the
device. If that is not the case, please proceed as
follows:
Temperature sensors have to be connected to the
terminals S1 to S4 (either polarity).
Connect the flow rate sensor to the terminals T
and V with correct polarity.
The terminals marked PWM are control outputs for
a high-efficiency pump.
9

NN N N
R3 R2 R1 L
1234 5 6 7 8 9 10 11 12
13 14 15 16 17 18 19 20 21 22 23 24
Sensor s
100 ... 240 V
T4 A
50-60 Hz
PWM 1
N
R3 R2 R1
L
R1-R3| 1(1) A 240 V~
IP 20
SD
R4 |1 (1) A 30 V
T
R4
S4 S3 S2 S1
GND
PWM2
VBus +
GND GND
K-Bus +
V
+5V
GND
1 2 3 4 5 6 7 8 9 10 11 12
R4
NOTE
Connect the permanent phase of the line valve
along with the power supply of the controller to L.
Connect the switching phase of the line valve to
R3.
The controller is supplied with power via a mains
cable. The power supply of the device must be 100
– 240 V~ (50 – 60 Hz).
The mains connection is at the terminals:
Neutral conductor N
Conductor L
Protective earth conductor
NOTE
For more details about the commissioning proce-
dure see chapter "Commissioning".
Data communication / Bus
The controller is equipped with the VBus® (21/22)
for data transfer with and energy supply to external
modules. The connection is to be carried out at the
terminals marked VBus (any polarity). One or more
VBus® modules can be connected via this data
bus, such as:
nAlarm module AM1
nDatalogger
If a cascade is installed, the following section is
valid additionally:
All cascade controllers are equipped with a cas-
cade bus for data communication with each other.
The connection is to be carried out at the two ter-
minals marked K-Bus (23/24) with correct polarity.
If required, use a junction box with distribution ter-
minals.
REMKO EFS series
10

MicroSD card slot
The controller is equipped with a MicroSD card
slot.
With a MicroSD card, the following functions can
be carried out:
nStore measurement and balance values onto
the MicroSD card. After the transfer to a com-
puter, the values can be opened and visual-
ised, e.g. in a spreadsheet.
nPrepare adjustments and parameterisations on
a computer and transfer them via the MicroSD
card.
nStore adjustments and parameterisations on
the MicroSD card and, if necessary, retrieve
them from there.
nIDownload firmware updates from the Internet
and install them on the controller via MicroSD
card.
Updates
MicroSD-Karteneinschub
1
1: MicroSD card slot
A MicroSD card is not included, but can be pur-
chased from the manufacturer.
NOTE
For more information about using a MicroSD
card, see chapter "SD card".
Overview of relay and sensor allocation
Single station
dV
S4
S1
R1/PWM1
S2
T
R3 R2
S3
Connection terminal Single station
S1 (1 / 2) Flow primary circuit
S2 (3 / 4) (optional) Stratified return source
S3 (5/ 6) (optional) Circulation
S4 (7 / 8) (optional) Stratified return store
T DHW
V DHW
R4 (19 / 20) (optional) Error relay
VBus (21 / 22) Visualisation
K-Bus (23 / 24) not used
PWM1 (connector) Speed primary pump
R3 (optional) Stratified return
R2 (optional) Circulation
R1 Primary pump
11

Cascade
S4 (A1)
R2 (A2)
S2 (A1)
R2 (A1)
S3 (A1)
A1: Station 1 A2: Station 2
Connection terminal Station 1 Station 2 Station 3 / 4 / 5 / 6
S1 /1/2) Flow primary circuit Flow primary circuit Flow primary circuit
S2 (3/4) (optional) Stratified return source --- ---
S3 (5/6) (optional) Circulation --- ---
S4 (7/8) (optional) Stratified return store --- ---
T DHW DHW DHW
V DHW DHW DHW
R4 (19/20) (optional) Error relay --- ---
VBus (21/22) Visualisation --- ---
K-Bus (23/24) Cascade bus Cascade bus Cascade bus
PWM1 (connector) Speed primary pump Speed primary pump Speed primary pump
R3 (optional) Line valve Line valve Line valve
R2 (optional) Circulation Stratified return ---
R1 Primary pump Primary pump Primary pump
REMKO EFS series
12

5 Operation and function
Buttons and adjustment dial
The controller is operated via 2 buttons and 1
adjustment dial (Lightwheel®) below the display:
Left button
1
- escape button for changing into the
previous menu
Right button
2
- confirming / selecting
Lightwheel®
3
- scrolling upwards / scrolling down-
wards, increasing adjustment values / reducing
adjustment values
Updates
MicroSD-Karteneinschub
1 2
3
Microbuttons for manual mode and emergency
operation
The controller is equipped with 2 microbuttons for
quick access to the emergency operation and the
manual mode. The microbuttons are located
underneath the slidable housing cover, the slider.
Microbutton : If the microbutton is briefly
pressed, the controller changes to the manual
mode menu.
Microbutton : The microbutton is used for acti-
vating the emergency operation.
Operating control LED
The controller is equipped with a multicolour LED
in the centre of the®. indicating the following states:
Colour
Permanently
shown Flashing
1
Everything OK
A note exists, see
chapter "Mes-
sages")
2
Disturbance or
warning exists
(see chapter "Mes-
sages", error relay
active, manual
mode active
3
Parameterisation
active Storage active
1: green / 2: red / 3: yellow
Parameterisation mode
After the installer code is entered (see chapter
"User code"), the controller changes to the param-
eterisation mode.
NOTE
In parameterisation mode, the control process
stops and the message Control stopped – Param-
eterisation active is indicated. The LED in the
Lightwheel® will glow yellow.
nIn order to carry out adjustments in the menu,
press the right button (
2
) The controller
changes to the main menu in which adjust-
ments on the installer level can be made.
nIn order to save the adjustments made, press
the microbutton ( ) for approx. 3 s or select
the menu item Save in the main menu.
nIn order to cancel the parameterisation process
and to discard adjustments made, press the
left button (
1
) for approx. 3 s.
The controller will leave the installer level and
restart.
13

Selecting menu points and adjusting values
During normal operation of the controller, the dis-
play is in the main menu. If no button is pressed for
2 min, the display switches to standby mode. After
further 10 s, the display illumination switches off.
In order to get from the status menu into the main
menu, press the left button (
1
).
Press any key to reactivate the display illumination.
In order to scroll through the menu items, turn the
Lightwheel®.
Values and options can be changed in different
ways:
Numeric values can be adjusted by means of a
slide bar. The minimum value is indicated to the
left, the maximum value to the right. The large
number above the slide bar indicates the current
adjustment. By turning the Lightwheel®, the upper
slide bar can be moved to the left or to the right.
Only after the adjustment has been confirmed by
pressing the right button (
2
) will the number below
the slide bar indicate the new value. The new
value will be saved if it is confirmed by pressing the
right button (
2
) again.
1 2
1: active area
2: inactive area
When 2 values are locked against each other, they
will display a reduced adjustment range depending
on the adjustment of the respective other value.
In this case, the active area of the slide bar is
shortened, the inactive area is indicated as a
dotted line. The indication of the minimum and
maximum values will adapt to the reduction.
If only one item of several can be selected, they
will be indicated with radio buttons. When one item
has been selected, the radio button in front of it is
filled.
If more than one item of several can be selected,
they will be indicated with checkboxes. When an
item has been selected, an x appears inside the
checkbox.
Adjusting the timer
With the Timer time frames for the function can be
adjusted.
In the Day selection channel, the days of the
week are available. If several days are selected,
they will be merged into one combination for the
following steps.
The last menu item after the list of days is Con-
tinue. If Continue is selected, the timer menu
opens, in which the time frames can be adjusted.
REMKO EFS series
14

Adding a time frame
In order to add a time frame, proceed as follows:
nSelect New time frame.
nAdjust Start and Stop for the desired time
frame.
The time frames can be adjusted in steps of 10
min.
In order to save the time frame, select Save and
confirm the security enquiry with Yes.
nIn order to add another time frame, repeat the
previous steps.
6 time frames can be adjusted per day or combina-
tion.
nPress the left button (
1
) in order to get back to
the day selection.
15

Copying a time frame
In order to copy time frames already adjusted into
another day / other days, proceed as follows:
nChoose the days(s) into which the time frames
are to be copied and select Copy from.
A selection of days with time frames will appear.
nSelect the day from which the time frames are
to be copied.
All time frames adjusted for the selected day will
be copied. Existing time frames will be overwritten.
Changing a time frame
In order to change a time frame, proceed as fol-
lows:
nSelect the time frame to be changed.
nMake the desired change.
nIn order to save the time frame, select Save
and confirm the security enquiry with Yes.
REMKO EFS series
16

Removing a time frame
In order to delete a time frame, proceed as follows:
nSelect the time frame that is to be deleted.
nSelect Delete and confirm the security enquiry
with Yes.
Resetting the timer
In order to reset time frames adjusted for a certain
day, proceed as follows:
nSelect the desired day.
nSelect Reset and confirm the security enquiry
with Yes.
17

In order to reset the whole timer, proceed as fol-
lows:
nSelect Reset and confirm the security enquiry
with Yes.
All adjustments made for the timer are deleted.
Adjusting optional functions
In the Optional functions menu, optional func-
tions can be selected and adjusted.
In order to activate a function, select the desired
function and confirm the enquiry with Yes.
When a function has been activated, an x within
the checkbox and a new menu line with the
symbol » appear.
When this menu item is selected, a submenu
opens in which all adjustments required can be
made.
In order to save the adjustments, select Save in
the main menu or press and hold down the micro-
button for approx. 3 s.
In order to delete a function, select the function in
the Optional functions menu and answer the
enquiry with No.
REMKO EFS series
18

6 Commissioning
6.1 Commissioning
When the hydraulic system is filled and ready for
operation, connect the controller to the mains.
The controller runs an initialisation phase in which
the Lightwheel® glows green.
When the controller is commissioned or when it is
reset, it will run a commissioning menu after the
initialisation phase. The commissioning menu
leads the user through the most important adjust-
ment channels needed for operating the system.
Commissioning menu
The commissioning menu consists of the channels
described in the following. In order to make an
adjustment, adjust the desired value with the Light-
wheel® and confirm with the right button
2
. The
next channel will appear in the display.
Updates
MicroSD-Karteneinschub
2
Operation
Adjustment mode
¯
Changing a value
¯
Confirming a value
¯
Next parameter
Commissioning the single station
1. Language
nAdjust the desired menu language.
2. System type
nSelect the system type Single station.
3. Daylight savings time adjustment
nActivate or deactivate the automatic daylight
savings time adjustment.
4. Time
nAdjust the clock time. First of all adjust the
hours, then the minutes.
19

5. Date
nAdjust the date. First of all adjust the year, then
the month and then the day.
6. Set hot water temperature
nAdjust the desired set hot water temperature.
For further information see the chapter "Hot water".
7. Circulation
nActivate or deactivate the circulation.
If the circulation is activated, further channels
appear:
nSelect the circulation type.
NOTE
For all circulation types, the circulation sensor S3
is required.
nActivate or deactivate the circulation timer.
For more information about the circulation, see the
chapter "Optional functions".
nStart the offset.
NOTE
No draw-off may be carried out during the offset.
All ball valves of the station must be fully opened
(normal position).
REMKO EFS series
20