Daikin EKSRDS2A User manual

Solar pressure station
Operating and
installation instructions
Operating and installation instructions
Solar pressure station English
Bedienungs- und Installationsanleitung
Solar-Druckstation Deutsch
Manuel d’utilisation
Solaire station de pression Français
Manuale di istruzioni
Solare gruppo a pressione Italiano
Installatie- en Gebruiksaanwijzing
Zonne Drukstation Nederlands
Manual de instalação e de operação
Estação de impressão solares Portugues
Kullanım Kılavuzu ve Cihazı Çalıştirma talimatları
Solar - Pompa ve emniyet gruba Türkçe
EKSRDS2A

Solar pressure station
Operating and
installation instructions
Operating and installation instructions
Solar pressure station English
EKSRDS2A

Operating and installation instructions
2
Table of contents
EKSRDS2A
DAIKIN Solar pressure station
4P699231-1 – 2022-06
Table of contents
1 About these operating instructions............................................................... 3
2 Information on safety.................................................................................... 4
2.1 Safety messages and hazard categories........................................... 4
2.2 Intended use ...................................................................................... 5
2.3 Predictable incorrect application........................................................ 5
2.4 Qualification of personnel .................................................................. 6
2.5 Personal protective equipment .......................................................... 6
2.6 Modifications to the product............................................................... 6
3 Transport and storage.................................................................................. 7
4 Product description ...................................................................................... 8
4.1 Overview ........................................................................................... 8
4.2 Dimensions ........................................................................................ 9
4.3 Function ............................................................................................. 9
4.4 Approvals, conformities, certifications................................................ 9
4.5 Technical data.................................................................................. 10
5 Mounting .................................................................................................... 11
5.1 Preparing mounting.......................................................................... 11
5.2 Mounting the product ....................................................................... 11
5.3 Connecting the product.................................................................... 13
5.4 Retrofitting the product..................................................................... 14
5.5 Electrical connection........................................................................ 14
6 Commissioning........................................................................................... 16
6.1 Commissioning the product ............................................................. 16
7 Operation ................................................................................................... 18
7.1 Reading mark at flow meter............................................................. 18
7.2 Venting the system .......................................................................... 19
8 Maintenance............................................................................................... 20
8.1 Maintenance intervals...................................................................... 20
9 Troubleshooting ......................................................................................... 20
9.1 Replacing the circulation pump........................................................ 21
10 Decommissioning, disposal........................................................................ 22
11 Returning the device .................................................................................. 22
12 Warranty..................................................................................................... 22

Operating and installation instructions
3
About these operating instructions
EKSRDS2A
DAIKIN Solar pressure station
4P699231-1 – 2022-06
1 About these operating instructions
These operating instructions describe the solar pump assembly
"EKSRDS2A" (also referred to as "product" in these operating instructions).
These operating instructions are part of the product.
• You may only use the product if you have fully read and understood these
operating instructions.
• Verify that these operating instructions are always accessible for any type
of work performed on or with the product.
• Pass these operating instructions as well as all other product-related doc-
uments on to all owners of the product.
• If you feel that these operating instructions contain errors, inconsisten-
cies, ambiguities or other issues, contact the manufacturer prior to using
the product.
These operating instructions are protected by copyright and may only be
used as provided for by the corresponding copyright legislation. We reserve
the right to modifications.
The manufacturer shall not be liable in any form whatsoever for direct or con-
sequential damage resulting from failure to observe these operating instruc-
tions or from failure to comply with directives, regulations and standards and
any other statutory requirements applicable at the installation site of the prod-
uct.

Operating and installation instructions
4
Information on safety
EKSRDS2A
DAIKIN Solar pressure station
4P699231-1 – 2022-06
2 Information on safety
2.1 Safety messages and hazard categories
These operating instructions contain safety messages to alert you to poten-
tial hazards and risks. In addition to the instructions provided in these oper-
ating instructions, you must comply with all directives, standards and safety
regulations applicable at the installation site of the product. Verify that you are
familiar with all directives, standards and safety regulations and ensure com-
pliance with them prior to using the product.
Safety messages in these operating instructions are highlighted with warning
symbols and warning words. Depending on the severity of a hazard, the
safety messages are classified according to different hazard categories.
In addition, the following symbols are used in these operating instructions:
DANGER
DANGER indicates a hazardous situation, which, if not avoided, will result
in death or serious injury.
WARNING
WARNING indicates a potentially hazardous situation, which, if not avoided,
can result in serious injury or equipment damage.
NOTICE
NOTICE indicates a hazardous situation, which, if not avoided, can result in
equipment damage.
This is the general safety alert symbol. It alerts to injury haz-
ards or equipment damage. Comply with all safety instruc-
tions in conjunction with this symbol to help avoid possible
death, injury or equipment damage.
This symbol alerts to hazardous electrical voltage. If this
symbol is used in a safety message, there is a hazard of
electric shock.

Operating and installation instructions
5
Information on safety
EKSRDS2A
DAIKIN Solar pressure station
4P699231-1 – 2022-06
2.2 Intended use
This product may only be used to circulate the following liquids in intrinsically
safe, sealed, solar systems:
• Standard heat transfer fluids (solar liquids) suitable for solar systems such
as water-glycol mixtures
The integrated safety group assembly serves to secure against excessive
pressure.
Any use other than the application explicitly permitted in these operating
instructions is not permitted and causes hazards.
Verify that the product is suitable for the application planned by you prior to
using the product. In doing so, take into account at least the following:
• All directives, standards and safety regulations applicable at the installa-
tion site of the product
• All conditions and data specified for the product
• The conditions of the planned application
In addition, perform a risk assessment in view of the planned application,
according to an approved risk assessment method, and implement the
appropriate safety measures, based on the results of the risk assessment.
Take into account the consequences of installing or integrating the product
into a system or a plant.
When using the product, perform all work and all other activities in conjunc-
tion with the product in compliance with the conditions specified in the oper-
ating instructions and on the nameplate, as well as with all directives, stand-
ards and safety regulations applicable at the installation site of the product.
2.3 Predictable incorrect application
The product must never be used in the following cases and for the following
purposes:
• Operation with swimming pool water
• Use with adherent, corrosive or flammable fluids
• Operation outside of the the permissible temperatures and pressures

Operating and installation instructions
6
Information on safety
EKSRDS2A
DAIKIN Solar pressure station
4P699231-1 – 2022-06
2.4 Qualification of personnel
Only appropriately trained persons who are familiar with and understand the
contents of these operating instructions and all other pertinent product docu-
mentation are authorized to work on and with this product.
These persons must have sufficient technical training, knowledge and expe-
rience and be able to foresee and detect potential hazards that may be
caused by using the product.
All persons working on and with the product must be fully familiar with all
directives, standards and safety regulations that must be observed for per-
forming such work.
2.5 Personal protective equipment
Always wear the required personal protective equipment. When performing
work on and with the product, take into account that hazards may be present
at the installation site which do not directly result from the product itself.
2.6 Modifications to the product
Only perform work on and with the product which is explicitly described in
these operating instructions. Do not make any modifications to the product
which are not described in these operating instructions.

Operating and installation instructions
7
Transport and storage
EKSRDS2A
DAIKIN Solar pressure station
4P699231-1 – 2022-06
3 Transport and storage
The product may be damaged as a result of improper transport or storage.
NOTICE
INCORRECT HANDLING
• Verify compliance with the specified ambient conditions during transport
or storage of the product.
• Use the original packaging when transporting the product.
• Store the product in a clean and dry environment.
• Verify that the product is protected against shocks and impact during
transport and storage.
Failure to follow these instructions can result in equipment damage.

Operating and installation instructions
8
Product description
EKSRDS2A
DAIKIN Solar pressure station
4P699231-1 – 2022-06
4 Product description
4.1 Overview
A. Flow
B. Return
C. Ball valve, can be shut off, with
thermometer blue and gravity
brake
D. Safety group assembly
E. Diaphragm safety valve
F. Discharge opening
G. Pressure gauge with mounting
valve
H. Connection for expansion vessel
I. Circulation pump
J. Shut-off
K. Filling and flushing valves
L. Flow meter
M. Insulation
N. Vent pot
O. Vent valve with hand wheel
P. Ball valve, can be shut off, with
thermometer red and gravity
brake
Fig. 1: EKSRDS2A, flow and return with filling and flushing valves and vent pot
C D
P
N
O
G
F
E
J
I
H
L
M
AB
K

Operating and installation instructions
9
Product description
EKSRDS2A
DAIKIN Solar pressure station
4P699231-1 – 2022-06
4.2 Dimensions
4.3 Function
The product is a pre-assembled, tightness-tested and heat-insulated solar
pump assembly with all required safety and functional components.
Both ball valves can be shut off and contain a thermometer and a gravity
brake.
4.4 Approvals, conformities, certifications
Refer to the operating instructions of the diaphragm safety valve.
See operating instructions of the manufacturer of the circulation pump for
versions with circulation pump.
Fig. 2: EKSRDS2A (in mm)

Operating and installation instructions
10
Product description
EKSRDS2A
DAIKIN Solar pressure station
4P699231-1 – 2022-06
4.5 Technical data
Parameter Value
General specifications
System connection G¾
Weight Max. 5.5 kg
Material of fittings Brass CW617N
Insulation material Polypropylene EPP
System pressure Max. 6 bar
Type of sealing Flat-sealing
Ambient conditions
Ambient temperature operation Max. 40 °C
Temperature of the medium Max. 120 °C,
short-term max. 160 °C
Flow meter
Pump connection Pump end with flange and union nut
G1½
Measuring range 2 ... 12 l/min
Combination valve red (flow)
Range 0 ... 120 °C
Combination valve blue (return)
Pump connection Pump end with flange and union nut
G1½
Range 0 ... 120 °C
Safety group assembly
Connection for expansion vessel G¾ for flex pipe, flat-sealing with
union nut
Diaphragm safety valve 6 bar
Pressure gauge Ø 63 mm, 0 ... 10 bar

Operating and installation instructions
11
Mounting
EKSRDS2A
DAIKIN Solar pressure station
4P699231-1 – 2022-06
5 Mounting
Only mount the product after having completed all pipe assembly work, all
welding work and all soldering work.
1. Flush the lines of the system before installing the product.
If you install the product in an existing system, observe the information in
chapter "Retrofitting the product".
Observe the operating instructions of the diaphragm safety valve when
mounting the product.
5.1 Preparing mounting
Verify that the nominal pressure of the product corresponds to the speci-
fication value of the system.
Verify that the liquid in the system complies with the intended use.
Verify that the product has been mounted without a shut-off element.
- Do not install shut-off valves, filters or similar equipment.
Verify that the product is mounted in such a way that no external forces
can act on the components after it has been installed.
If the expansion vessel is mounted at the same height as the product or
higher than the product, the expansion vessel must be protected from ther-
mal loads (for example, heat trap siphon).
5.2 Mounting the product
The product is delivered ready to be installed. You must not dismount any of
the parts.
Verify that no steam can get into the expansion vessel in the case of stag-
nation in the system.
Verify that all pipe ends are perpendicular and have been deburred.
Verify that all sealing surface are clean and free from damage.
Verify that the enclosed dowels are suitable for the intended wall.
1. Remove the upper insulation.
2. Hold the product to the wall and align it with a level
3. Draw two marks.
4. Drill a hole (Ø 10 mm) each.

Operating and installation instructions
12
Mounting
EKSRDS2A
DAIKIN Solar pressure station
4P699231-1 – 2022-06
5. Mount the product using the enclosed dowels and screws.
- long hanger bolt at the top
- short hanger bolt at the bottom
6. Fit the product with the bottom insulation and secure it with a washer and
a nut.
7. Connect the pipes of the solar circuit to the connections of the product
(see chapter "Connecting the product").
8. Refit the upper insulation.
Fig. 3: EKSRDS2A

Operating and installation instructions
13
Mounting
EKSRDS2A
DAIKIN Solar pressure station
4P699231-1 – 2022-06
5.3 Connecting the product
1. Connect the pipes of the solar circuit to the connections of the product.
2. Connect the pipe or flex pipe of the expansion vessel to the safety group
assembly.
A. Safety group assembly
B. Flat gasket
C. Flex pipe, flat-sealing
Fig. 4: Connection flex pipe G¾
A
C
B

Operating and installation instructions
14
Mounting
EKSRDS2A
DAIKIN Solar pressure station
4P699231-1 – 2022-06
5.4 Retrofitting the product
Verify that the nominal pressure of the product corresponds to the speci-
fication value of the system.
Verify that the liquid in the system and the application area of the product
are compatible.
When the system has cooled down and unpressurised, you can mount the
product.
1. Drain the system.
2. Flush the lines of the system.
3. Mount the product as described in chapter "Mounting the product".
5.5 Electrical connection
WARNING
HOT LIQUID
The liquid in solar systems is under high pressure and can have tempera-
tures of more than 100 °C.
• Verify that the liquid has cooled down before opening the system and
mounting the product.
• Verify that the system has been unpressurised and drained before
mounting the product.
Failure to follow these instructions can result in death, serious injury
or equipment damage.
DANGER
ELECTRIC SHOCK
• Verify that the degree of protection against electric shock (protection
class, double insulation) is not reduced by the type of electrical installa-
tion.
Failure to follow these instructions will result in death or serious
injury.

Operating and installation instructions
15
Mounting
EKSRDS2A
DAIKIN Solar pressure station
4P699231-1 – 2022-06
1. Connect the circulation pump in accordance with the instructions of the
manufacturer.
2. Route the connection cable of the circulation pump through the cable duct
to the bottom and connect it to the solar controller.
- Observe the operating instructions of the solar controller.
Use a shielded cable 3 x 1.5 mm² and up to Ø 10 mm to extend the connec-
tion cable.
DANGER
ELECTRIC SHOCK CAUSED BY LIVE PARTS
• Disconnect the mains voltage supply before performing the work and
ensure that it cannot be switched on.
• Verify that no hazards can be caused by electrically conductive objects
or media.
Failure to follow these instructions will result in death or serious
injury.
NOTICE
SUPPLY VOLTAGE FLUCTUATIONS
The pump electronics can be damaged by voltage fluctuations.
• Verify that the pump is not controlled via an external speed controller
which changes the supply voltage.
• Verify that the pump is controlled with 230 V without phase angle control.
• Switch the pump on and off via the controller.
Failure to follow these instructions can result in equipment damage.

Operating and installation instructions
16
Commissioning
EKSRDS2A
DAIKIN Solar pressure station
4P699231-1 – 2022-06
6 Commissioning
Prerequisite for commissioning is a complete installation of all hydraulic and
electrical components.
6.1 Commissioning the product
EKSRDS2A is filled via the filling and flushing valves at the flow meter.
1. Verify tightness of the components of the system.
- Adapt the test pressure and the test duration to the corresponding
installation and the corresponding operating pressure.
2. Set to ball valves to 45° position for filling of the system.
Thermometer ball valves
0° Normal operation:
Ball valve open in direction of flow of solar liquid
90° Maintenance:
Ball valve closed
45° Commissioning, filling, venting, draining and flushing:
Both ends open (gravity brake not active)

Operating and installation instructions
17
Commissioning
EKSRDS2A
DAIKIN Solar pressure station
4P699231-1 – 2022-06
Filling the system
1. Connect the hose connectors and hoses to the filling and flushing valves
(B and C).
2. Open the filling and flushing valves and close the shut-off (A).
3. Fill the system with solar liquid via the upper filling valve (B).
4. During filling, verify that all connections are tight.
5. Close the lower shut-off valve (C) as soon as solar liquid escapes there.
6. Apply pressure to the system.
7. Close the upper filling and flushing valve (B).
8. Open the shut-off (A).
9. Vent the system (see chapter "Venting the system").
10.Set the two ball thermometers to 0° position.
11.Fit the upper part of the insulation onto the product.
12.Make sure the pipe insulation reaches into the corresponding recess of
the insulation of the product.
A. Shut-off in return B. Filling and flushing valve
C. Filling and flushing valve
B
C
A

Operating and installation instructions
18
Operation
EKSRDS2A
DAIKIN Solar pressure station
4P699231-1 – 2022-06
7 Operation
Proper operation is only possible if the thermometer ball valves and the ball
valves are open (0° setting).
For safety reasons, liquid must be able to escape via the discharge line of the
diaphragm safety valve during heating.
1. If the diaphragm safety valve has responded, check the system.
2. Remove the cause before recommissioning the system.
7.1 Reading mark at flow meter
The lower edge of the float is the
reading mark at the flow meter.