oventrop X-45 User manual

Regumaq X-45
Operating instructions
EN

Page
Regumaq X-45
Contents
1. General information ............................................................................................................7
1.1 Validity of the instructions...................................................................................................................... 7
1.2 Type plate............................................................................................................................................... 7
1.3 Scope of delivery .................................................................................................................................... 7
1.4 Contact................................................................................................................................................... 7
1.5 Declaration of conformity ....................................................................................................................... 7
1.6 Symbols used.......................................................................................................................................... 7
2. Safety-related information ..................................................................................................8
2.1 Intended use........................................................................................................................................... 8
2.2 Modifications to the product................................................................................................................... 8
2.3 Warnings ................................................................................................................................................ 8
2.4 Safety instructions.................................................................................................................................. 9
2.4.1 Danger to life due to legionella formation.................................................................................................... 9
2.4.2 Danger to life due to electric current............................................................................................................ 9
2.4.3 Danger due to insufficient personnel qualification ...................................................................................... 9
2.4.4 Risk of scalding due to hot water ................................................................................................................. 9
2.4.5 Risk of injury from pressurised components................................................................................................ 9
2.4.6 Risk of burns due to unintentionally escaping hot media ............................................................................ 9
2.4.7 Risk of burns on hot components and surfaces ........................................................................................... 9
2.4.8 Risk of injury due to the weight of the product............................................................................................ 9
2.4.9 Risk of injury from improper work................................................................................................................ 9
2.4.10 Damage to property due to unsuitable location..........................................................................................10
2.4.11 Risk of damage to property due to incorrect operation ..............................................................................10
2.4.12 Availability of the operating instructions ....................................................................................................10
3. Technical description .........................................................................................................11
3.1 Design ................................................................................................................................................... 11
3.2 Functional description ...........................................................................................................................13
3.3 Installation schemes ..............................................................................................................................13
3.4 Application example ..............................................................................................................................15
3.5 Technical data........................................................................................................................................15
3.5.1 Front view....................................................................................................................................................17
3.5.2 Side view......................................................................................................................................................18
3.5.3 Wall bracket.................................................................................................................................................19
3.6 Terminal assignment of the controller .................................................................................................. 20
4. Accessories and spare parts .............................................................................................. 21
4.1 Potable water circulation set..................................................................................................................21
4.2 Sealing ring set ......................................................................................................................................21
4.3 Installation relay ....................................................................................................................................21
4.4 Water sampling valve.............................................................................................................................21
4.5 Strainer................................................................................................................................................. 22
4.6 Water filter ........................................................................................................................................... 22
4.7 Earthing clamp...................................................................................................................................... 22
5. Transport and storage .......................................................................................................22
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Regumaq X-45
Contents
6. Mounting .......................................................................................................................... 23
6.1 Notes on mounting............................................................................................................................... 23
6.2 Wall mounting of the station ................................................................................................................ 23
6.2.1 Required tools ............................................................................................................................................ 23
6.2.2 Mounting .................................................................................................................................................... 24
6.3 Piping ................................................................................................................................................... 25
6.4 Protective equipotential bonding/earthing........................................................................................... 27
7. Commissioning .................................................................................................................28
7.1 Filling and venting of the storage cylinder circuit.................................................................................. 28
7.2 Filling and venting of the potable water circuit ..................................................................................... 29
7.3 Electrical connection............................................................................................................................. 29
7.3.1 Power supply through the pre-assembled mains connection cable .......................................................... 30
7.3.2 Power supply without the pre-assembled mains connection cable........................................................... 30
7.4 Handover to the operator ..................................................................................................................... 32
8. Operation ......................................................................................................................... 33
8.1 Start screen .......................................................................................................................................... 33
8.2 Main menu............................................................................................................................................ 33
8.3 User authorisations............................................................................................................................... 34
8.3.1 Start menu.................................................................................................................................................. 34
8.3.2 Status...........................................................................................................................................................35
8.3.3 Hot water.....................................................................................................................................................35
8.3.4 Circulation .................................................................................................................................................. 36
8.3.5 Additional functions ................................................................................................................................... 37
8.3.6 Basic settings.............................................................................................................................................. 39
8.3.7 Manual mode.............................................................................................................................................. 39
8.4 Controller presettings...........................................................................................................................40
8.4.1 Circulation (presetting 1) ............................................................................................................................ 40
8.4.2 Storage cylinder loading (presetting 2) ......................................................................................................40
8.4.3 Circulation with return stratification (presetting 3)....................................................................................40
8.4.4 Circulation with storage cylinder loading (presetting 4) ............................................................................40
8.4.5 Circulation with return stratification and storage cylinder loading (presetting 5) .....................................40
8.5 Setting of the timer...............................................................................................................................40
8.5.1 Day selection .............................................................................................................................................. 40
8.5.2 Reset........................................................................................................................................................... 41
8.5.3 Back ............................................................................................................................................................ 41
8.6 Hot water.............................................................................................................................................. 41
8.6.1 Setting of the temperature......................................................................................................................... 41
8.6.2 Emergency operation ................................................................................................................................. 41
8.7 User code.............................................................................................................................................. 41
8.8 Circulation ............................................................................................................................................ 42
8.8.1 Off .............................................................................................................................................................. 42
8.8.2 On demand................................................................................................................................................. 42
8.8.3 Thermal ...................................................................................................................................................... 42
8.8.4 Continuous operation................................................................................................................................. 42
8.8.5 Timer .......................................................................................................................................................... 42
8.9 Additional functions ............................................................................................................................. 42
8.9.1 Return stratification.................................................................................................................................... 42
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Regumaq X-45
Contents
8.9.2 Storage cylinder loading............................................................................................................................. 43
8.9.3 Error relay ................................................................................................................................................... 43
8.9.4 Parallel relay ............................................................................................................................................... 43
8.9.5 Function block (1 or 2) ................................................................................................................................ 43
8.9.6 Thermal disinfection................................................................................................................................... 43
8.10 Basic settings........................................................................................................................................44
8.11 MicroSD card slot..................................................................................................................................44
8.11.1 Insertion of the microSD card.....................................................................................................................44
8.11.2 Updating the firmware on the controller.................................................................................................... 45
8.11.3 Start of recording........................................................................................................................................ 45
8.11.4 End of recording .........................................................................................................................................46
8.11.5 Saving of the controller settings.................................................................................................................46
8.11.6 Loading of the controller settings ..............................................................................................................46
8.12 Manual mode ........................................................................................................................................46
8.13 Blocking of the controller settings ........................................................................................................46
8.14 Anti-blocking protection....................................................................................................................... 46
8.15 Replacement of the fuse .......................................................................................................................46
9. Troubleshooting................................................................................................................47
9.1 Troubleshooting table........................................................................................................................... 47
9.2 Nominal resistances of the temperature sensors..................................................................................48
9.3 Decalcification of the heat exchanger ................................................................................................... 49
9.3.1 Decalcification of the potable water circuit with the heat exchanger installed.......................................... 49
9.3.2 Cleaning of the heat exchanger (storage cylinder circuit side) .................................................................. 50
9.3.3 Decalcification of the removed heat exchanger..........................................................................................51
9.4 Cleaning of the volume flow sensor ...................................................................................................... 52
9.4.1 Required tools ............................................................................................................................................ 52
9.4.2 Cleaning of the measuring turbine............................................................................................................. 52
10. Maintenance ..................................................................................................................... 55
10.1 Maintenance ......................................................................................................................................... 55
10.1.1 Leakage check (visual inspection) ...............................................................................................................55
10.1.2 System pressure check................................................................................................................................55
10.1.3 Functional check of the safety valves (potable water circuit)......................................................................55
10.1.4 Water sampling ...........................................................................................................................................55
10.1.5 Actuation of the four shutoff ball valves .....................................................................................................55
10.1.6 Electrical components and plug connections..............................................................................................55
10.1.7 Functional control of the check valve of the circulation set ........................................................................55
10.1.8 Replacement of the potable water filter insert........................................................................................... 56
11. Notes for the operator.......................................................................................................56
12. Dismantling and disposal .................................................................................................. 57
12.1 Dismantling of the station .................................................................................................................... 57
12.1.1 Disconnection of the station from the power supply................................................................................. 57
12.1.2 Dismantling of the station.......................................................................................................................... 57
12.2 Disposal................................................................................................................................................ 57
13. List of figures....................................................................................................................58
14. Appendix ..........................................................................................................................60
14.1 Characteristic line for Wilo circulation pump ........................................................................................ 60
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Contents
14.2 Characteristic line for hot potable water preparation.............................................................................61
14.2.1 Heating of potable water from 10 °C to 45 °C .............................................................................................61
14.2.2 Heating of potable water from 10 °C to 50 °C ............................................................................................ 62
14.2.3 Heating of potable water from 10 °C to 55 °C ............................................................................................ 63
14.2.4 Heating of potable water from 10 °C to 60 °C............................................................................................64
14.2.5 Heating of potable water from 10 °C to 65 °C ............................................................................................ 65
14.2.6 Heating of potable water from 10 °C to 70 °C ............................................................................................ 66
14.2.7 Heating of potable water from 10 °C to 75 °C ............................................................................................ 67
14.3 EU Declaration of conformity................................................................................................................ 68
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Regumaq X-45
General information
1. General information
The original operating instructions are written in German.
The operating instructions in other languages have been
translated from German.
1.1 Validity of the instructions
These instructions are valid for the Regumaq X-45 fresh
water station.
1.2 Type plate
The type plate is attached to the bottom left of the upper
shell from the outside.
1.3 Scope of delivery
Check your delivery for transport damage and
completeness.
The scope of delivery includes:
• Regumaq X-45 fresh water station
• Fixing material
• Wall bracket
• 4x sealing ring
• Operating instructions
1.4 Contact
Contact address
OVENTROP GmbH & Co. KG
Paul-Oventrop-Straße 1
59939 Olsberg
GERMANY
Technical services
Phone: [phone]
1.5 Declaration of conformity
Oventrop GmbH & Co. KG hereby declares that this
product has been manufactured in compliance with the
essential requirements and the relevant provisions of the
relevant EU directives.
The declaration of conformity is attached.
1.6 Symbols used
Highlights important information and further
additions.
!
Action required
• List


Fixed order. Steps  to X.
ZResult of action
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Regumaq X-45
Safety-related information
2. Safety-related information
2.1 Intended use
Operational safety is only guaranteed if the product is
used as intended.
The station is an electronically controlled product
assembly with heat exchanger for use in domestic areas
(e.g. rental units in residential, business or commercial
areas).The product assembly supplies heated potable
water (hot water).
Use the product:
•In technically perfect condition.
•At locations directly connected to the public low-
voltage grid.
The passage of media other than heating water in the
storage cylinder circuit and potable water in the potable
water circuit is not as intended. Direct connection of the
fresh water station to the local and/or district heating
networks can lead to malfunctions. Parallel operation with
other heating system components, such as heating circuit
stations etc. is not permitted.
Any use beyond and/or different from this is considered
unintended use.
Claims of any kind against the manufacturer and/or his
authorised representatives for damage resulting from
unintended use cannot be recognised.
Intended use also includes correct compliance with these
instructions.
2.2 Modifications to the product
Modifications to the product are not permitted. In case of
modifications to the product, the warranty will become
void.The manufacturer will not accept liability for damage
and breakdowns caused by modifications to the product.
2.3 Warnings
Each warning contains the following elements:
Warning symbo
SIGNAL WORD
Type and source of danger
Possible consequences if the danger occurs or the
warning is ignored.
!
Ways to avoid the danger.
Signal words define the severity of the danger posed by a
situation.
DANGER
Indicates an imminent danger with high risk. If the
situation is not avoided, death or most seriously bodily
injuries will result.
WARNING
Indicates a possible danger with moderate risk. If the
situation is not avoided, death or serious bodily injuries
may result.
CAUTION
Indicates a possible danger with lower risk. If the
situation is not avoided, minor and reversible bodily
injuries will result.
NOTICE
Indicates a situation that can potentially result in damage
to property if not avoided.
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Regumaq X-45
Safety-related information
2.4 Safety instructions
We have developed this product in accordance with
current safety requirements.
Observe the following instructions for safe use.
2.4.1 Danger to life due to legionella
formation
Ensure the following:
• The temperature of the potable water in the cold
water riser must not exceed 25°C.
• The water in the potable water circuit must be
completely replaced after 72 hours at the latest.
• When using a circulation pipe, the hot water
temperature must be at least 60°C.The temperature
difference between the hot water outlet of the heat
exchanger and the return of the circulation pipe at the
station must not exceed 5°C.
2.4.2 Danger to life due to electric current
fMake sure that the product can be disconnected from
the power supply at any time.
fDo not operate the product if there is visible damage.
The controller only needs to be opened when
using accessory components.Work on the pow-
er supply is therefore only necessary when us-
ing accessory components.
Work on the power supply may only be carried out by a
specialist electrician.
fDisconnect the station from the power supply at all
poles and secure it against being switched on again.
fCheck that no voltage is present.
fOnly install the product in dry indoor areas.
2.4.3 Danger due to insufficient personnel
qualification
Work on this product may only be carried out by suitably
qualified specialist tradespeople.
Due to their professional training and experience as well
as knowledge of the relevant legal regulations, qualified
specialist tradespeople are able to carry out work on the
described product in a professional manner.
User
The operator must be instructed in the operation by
specialist tradespeople.
2.4.4 Risk of scalding due to hot water
Due to setting or defect of the controller, the hot water
temperature at the draw-off points can rise up to the
heating water temperature in the buffer storage cylinder.
If there is a risk of scalding in accordance with DIN EN 806
and DIN1988 due to a high heating water temperature in
the buffer storage cylinder, you must install scald
protections at all draw-off points.
If the heating water temperature in the buffer storage
cylinder is low, resulting in a low hot water temperature
without risk of scalding at the draw-off points,you must
instruct the system operator to ensure the low heating
water temperature in the buffer storage cylinder all year
round.
2.4.5 Risk of injury from pressurised
components
fOnly carry out work on the storage cylinder circuit
or the potable water circuit when the system is
depressurised.
fAdhere to the permissible operating pressures during
operation.
fInstall a safety valve that cannot be shut off in the
potable water heating system (DIN EN 806-2).
2.4.6 Risk of burns due to unintentionally
escaping hot media
fOnly carry out work on the storage cylinder circuit
or the potable water circuit when the system is
depressurised.
fAllow the product to cool down before working on it.
fCheck that the product is not leaking after work is
complete.
fWear safety goggles.
2.4.7 Risk of burns on hot components and
surfaces
fAllow the product to cool down before working on it.
fWear suitable protective clothing to avoid unprotected
contact with hot fittings and system components.
2.4.8 Risk of injury due to the weight of the
product
fAlways wear safety shoes during installation.
2.4.9 Risk of injury from improper work
Stored energy, angular components, points and corners on
and in the product can cause injuries.
fEnsure there is sufficient space before starting work.
fHandle open or sharp-edged components with care.
fKeep the working area tidy and clean to avoid sources
of accidents.
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Regumaq X-45
Safety-related information
2.4.10 Damage to property due to unsuitable
location
fDo not install the product in rooms prone to frost.
fDo not install the product in wet or damp
environments.
fDo not install the product in rooms with corrosion-
enhancing ambient air. Observe the notes on corrosion
protection in the appendix.
fEnsure that the product is not exposed to strong
sources of electromagnetic radiation.
2.4.11 Risk of damage to property due to
incorrect operation
fDo not close the secondary ball valves during operation.
2.4.12 Availability of the operating instructions
Every person who works with this product must have read
and apply this manual and all applicable instructions (e.g.
accessories instructions).
The instructions must be available at the place of use of
the product.
fPass on these instructions and all applicable
instructions (e.g.accessories instructions) to the
operator.
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Regumaq X-45
Technical description
3. Technical description
3.1 Design
1
2
3
4
5
6
7
8
10
12
13
15
14
9
11
1618192021 17
Fig. 1: Regumaq X-45
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Regumaq X-45
Technical description
1Temperature sensor for potable water (hot) S2
2Temperature sensor for storage cylinder circuit S1
3Heat exchanger
4Fill and drain ball valve for potable water (cold)
5Volume flow sensor for potable water circuit VTY 20
6Fill and drain ball valve for storage cylinder circuit return
7Shutoff ball valve for potable water (hot)
8Wall bracket
9Shutoff ball valve for potable water (cold)
10 Safety valve for potable water circuit (10 bar)
11 Connection for circulation pipe
12 Temperature sensor for potable water (cold)/circulation S3
13 Circulation pump for storage cylinder circuit
14 Controller
15 Backflow preventer in the storage cylinder circuit
16 Shutoff ball valve for storage cylinder circuit return
17 Fill and drain ball valve for potable water (hot)
18 Shutoff ball valve for storage cylinder circuit supply
19 Fill and drain ball valve for storage cylinder circuit supply
20 Magnetic contact
21 Touch control panel
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Regumaq X-45
Technical description
3.3 Installation schemes
1 2 3 4
5
Fig. 2: Installation scheme with a Regumaq X-45 fresh water station
3.2 Functional description
The Regumaq X-45 is an electronically controlled product
assembly with heat exchanger for potable water heating
according to the continuous flow principle.The potable
water is only heated when it is needed.This station does
not require hot potable water to be stored in a storage
cylinder.The station enables heat to be provided according
to demand, even with very low potable water
consumption.
The integrated heat exchanger provides system separation
between the potable water circuit and the storage cylinder
circuit.
At a specified potable water temperature of 60°C and a
storage cylinder temperature of 75°C, the discharge of hot
potable water can be between 1 and 45l/min. The
provision of hot potable water is realised by the controller
regulating the circulation pump to a (variable) speed in
order to feed heating water from the connected buffer
storage cylinder into the heat exchanger according to
demand. Based on the actual values for the volume flow
and the temperature (of the potable water) recorded by
the sensors, the controller calculates the pump speed
required to achieve the desired hot potable water
temperature.
The controller is connected to the touch control panel via
magnetic contacts.The contacts are closed or separated
by mounting and removing the upper shell.
The controller is equipped with a total of 5 relays.
Consumers (e.g. pumps,valves or similar) can be
connected to the relays.
Example:
Simultaneous tapping at several draw-off points and the
associated higher consumption of hot potable water
immediately triggers a higher pump speed in order to feed
more heating water into the heat exchanger. This transfers
correspondingly more heat to the potable water circuit.
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Regumaq X-45
Technical description
1 2 3 34
5
4
Fig. 3: Installation scheme with two Regumaq X-45 fresh water stations
1Heat generator
2Buffer storage cylinder
3Regumaq X-
4Backflow preventer
5Water filter
Storage cylinder circuit supply
Storage cylinder circuit return
Potable water (cold) (PWC)
Potable water (hot) (PWH)
Direction of flow
If you operate several Regumaq X- stations in parallel, pipe the stations according to the Tichelmann's pipe routing
in order to realise an even flow through the stations with the lowest possible resistance.
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Regumaq X-45
Technical description
3.4 Application example
Design temperatures: 60°C hot water; 75°C flow temperature storage cylinder circuit
(design according to DIN 1988-300)
Number
of X-
stations
Residential
building
Hospital room Hotel
room
Series shower
installation
Buffer storage
cylinder volume [l]
Required
boiler output
[kW]
 washbasin
 kitchen sink
 shower
 washbasin
 shower
 washbasin
 shower
Number of showers at
l/min °C PWH
(simultaneity factor
%)
      
     
3.5 Technical data
General information
Max. operating pressure
(ps)
 bar
Max. operating tempera-
ture (ts)
°C
Ambient temperature  - °C
Empty weight Approx. kg
Connections
Storage cylinder circuit, po-
table water circuit, circula-
tion
G flat sealing external
thread
Fill and drain ball valves G⁄ external thread, for
hose screw connection
Storage cylinder circuit
Fluid Heating water according
to VDI /Ö-Norm
(Austrian standard)
H-, fluid category ≤
 according to DIN EN
, (see Oventrop in-
formation sheet on corro-
sion protection in the
appendix)
kvvalue .m⁄h
High-efficiency pump Wilo PARA -/-/
LIN-
Power consumption in
operation  - W
Potable water circuit
Fluid Potable water (see Oven-
trop information sheet on
corrosion protection in
the appendix)
Notice
Damage to the
measuring turbine due
to chemical
influences!
Water treatment
additives in high
concentrations can
damage the measuring
turbine.
!
Ensure that the
permissible limits
for potable water
are not exceeded.
Discharge capacity
(at  T = K)
-l⁄min
kvvalue .m⁄h
Safety valve  bar
- Control range:
- Controller presetting:
 - °C
 - °C
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Regumaq X-45
Technical description
Material
Valves and fittings Brass / dezincification re-
sistant brass
Seals Fibre material, EPDM
Thermal insulation Expanded polypropylene
Pipes Stainless steel .
Heat exchanger copper
brazed
Plates: Stainless steel
.
Connections: Stainless
steel .
Brazing material: Copper
Heat exchanger copper
brazed, Sealix® protective
layer
Plates: Stainless steel
.
Connections: Stainless
steel .
Brazing material: copper
Protective layer:
SIObased
Dimensions
Width/Height/Depth //mm
Distance between pipe
centres (primary)
 mm
Distance between pipe
centres (secondary)
 mm
Distance pipe centre to
wall (primary)
 mm
Distance pipe centre to
wall (secondary)
 mm
Distance between sealing
surfaces
Primary to secondary side
 mm
Torques
Union nuts G⁄  Nm
Union nuts G  Nm
Temperature sensor  Nm
Volume flow sensor  Nm
Controller
Inputs  sensors,  Sika volume
flow sensor
Outputs  electromechanical re-
lays,  potential-free relay
and  PWM outputs
Switching capacity  () A V~ (electro-
mechanical relay)
 () A V~ (poten-
tial-free relay)
Total switching capacity  A V~
Relay  to  Electromagnetic
Conductor  to 
Neutral conductor N
Protective conductor
Relay  Potential-free relay
R-A = Normally open
contact
R-M = Centre contact
R-R = Normally closed
contact
Supply – V~ ( –Hz)
Connection type X
Mode of operation Type .C.Y
Rated surge voltage . kV
Fuse TAHV
Data interface S bus LIN bus, microSD
card slot
Casing Plastic, PC-ABS and
PMMA
Display Touch/full graphic display
Operation  touch keys
Protection IP /DIN EN 
Protection class I
Contamination degree 
Controller dimensions  x  x mm
Touch control panel di-
mensions
Ø , depth mm
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Regumaq X-45
Technical description
3.5.1 Front view
400
250
100175
80
25
625
565
Fig. 4: Dimensions of the Regumaq X-45 in mm (front)
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Regumaq X-45
Technical description
3.5.2 Side view
240
105
65
625
Fig. 5: Dimensions of the Regumaq X-45 in mm (side)
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Regumaq X-45
Technical description
3.5.3 Wall bracket
120
225 175
400
625
410 215
Fig. 6: Dimensions of the Regumaq X-45 in mm (wall bracket)
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Regumaq X-45
Technical description
3.6 Terminal assignment of the controller
1234
ON DIP
S5 S6 S7 S8 S-Bus
K-Bus
LIN-Bus
S2S1 S3 S4
100 – 240 V | 50 – 60 Hz T4A
R1-4 | 1 (1) A 240 V~
R5 | 4 (2) A (100 ... 240) V~
R5
IP 22
X-45
VN: 1.0
Paul-Oventrop-Straße 1
D-59939 Olsberg
GND GND GND GND
GND
10V Signal
Sika
DISPLAY
PE NL'PE NL'PE NR1PE NR3AMR
PE NLPE NL'PE NR2PE NR4
PWM1 PWM2 PWM3 PWM4
PE
DIP N L
Fig. 7: Terminal assignment
Sensors
S1 Storage cylinder supply
S2 Hot water Connections for temperature sensors with any polarity at ter-
minals S to S.
S3 Cold water
S4 - S8 Unassigned, freely assignable
Control outputs for high-efficiency pumps
PWM
1-4
Control outputs for high-efficiency pumps.
Interface for LIN bus pump
10 V
GND Connection of the LIN bus pump to the terminals  V, GND and Signal, observing the prescribed po-
larity.
Signal
Interface for the touch control panel
Display Connection via plug contact
Volume flow sensor (Sika)
10 V
V
Flow rate Connection for the volume flow sensor via plug contact.
GND
Power supply  –  V~ ( –  Hz)
PE Protective conductor
NNeutral conductor
LPhase power supply
R1 - R4 Electromagnetic relay
R5 Potential-free relay
L‘ Phase (permanently live, fused contact)
20 138114082-V04.04.2022