Daikin EKSRPS4AB [7/44] X product description
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Daikin EKSRPS4AB [7/44] X product description

Daikin EKSRPS4AB [7/44] X product description
3 x Product description
Daikin EKSRPS4
Daikin Control and pump unit for solar systems
008.1624644 – 08/2015
Operating and installation instructions
7
3.2 Brief description
The Daikin solar system is a thermal solar system for supplying
hot water for consumption and solar support.
Mode of operation
The EKSV21P, EKSV26P and EKSH26P high-performance solar
panels efficiently convert the sun’s radiation into heat. Hereby,
the heat transport media is normal tap water.
As soon as the solar collectors have reached a useful temper-
ature level, the water of the heating jacket in the storage cylinder
(which is not under pressure) is pumped directly through the
collectors. With insufficient collector temperature, the circulation
pump is switched off and the system is drained automatically.
This operating mode has several advantages:
– High operational reliability, as there are no components that
could be damaged or fail (such as expansion vessel, safety
valve, venting valves, etc.).
– Excellent heat transfer and heat storage capacity (system
works without antifreeze agents).
– Minimum maintenance requirements.
– Frost proof.
– Without separate solar heat exchanger.
– No stagnation problems.
Modular design
The system consists of several preassembled modules. Plug-in
technology and a high degree of pre-assembly ensure fast and
simple system installation.
Storage tank
The following storage tanks can be used for the Daikin solar
system:
– Daikin EKHWP (HYC): Thermally insulated, de-pressurised
plastic storage tank (with connection facility for a Daikin air-
water heat pump).
– Daikin Altherma EHS(X/H) Solar storage tank with integrated
interior air-water heat pump device.
Electronic control
The fully electronic Daikin Solar R4 control system ensures op-
timum utilisation of the solar heat (hot consumption water gener-
ation, heating support) as well as the observance of all safety-rel-
evant aspects. All parameters needed for trouble-free operation
have been preset at factory.
3.3 System components
3.3.1 Control and pump unit for solar systems
EKSRPS4
The Daikin EKSRPS4 Control and pump unit for solar
systems can only be installed and operated as part of a
Daikin Solar System (DrainBack) using the provided
installation material.
The prerequisite for problem-free operation in the
DrainBack system, is that the connection lines are
routed with a constant gradient (at least 2 %), and that
the bottom edges on the solar panels with double-sided
connections are mounted with a constant gradient to
the return connection, or, with same side connection,
are mounted horizontally.
Construction, operating principle, commissioning, and
operation of other solar components are not described
in this manual. Detailed information about the compo-
nents can be seen in the operating and installation
instructions of the individual units.
The handling instructions and descriptions in this
manual are valid for all Daikin storage tanks to be used
in conjunction with this solar system, even if only one
type is used for illustrative purposes. In the event of de-
viations from other storage tanks, a separate note is
provided.
Consists of:
1 Cover
2 Connection piping with solar operating pump
3 Daikin Solar R4-controller with storage tank temperature sensor,
return flow temperature sensor, solar panel temperature sensor
connecting cables, FlowSensor, 230 V mains connecting cable
(3 m)
4 Accessories pocket (6 fixing screws, 2 plastic plugs, 2 locking
screws, plug fitting and gasket)
5 Mounting material (retaining bracket for pump mounting, holding
bar and fixing bracket for controller)
6 Solar documentation
Fig. 3-2 Control and pump unit for solar systems (EKSRPS4)

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