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3.2 Info parameters
The ROTEX solar system is a thermal solar system for supplying
hot water for consumption and solar support.
The ROTEX regulation and pump unit RPS4 can only
be installed and operated in the depressurised ROTEX
Solaris System (DrainBack) using the provided installa-
tion 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 con-
stant gradient to the return connection, or, with same side con-
nection, are mounted horizontally.
Password protection
The Solaris V21P, V26P and H26P high-performance solar
panels efficiently convert the sun's radiation into heat. The heat
transport medium 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 ROTEX solar
system:
– ROTEX Sanicube Solaris (SCS): Thermally insulated, de-
pressurised plastic storage tank (with connection facility for a
ROTEX air-water heat pump).
– ROTEX HybridCube (HYC): Thermally insulated, de-pressur-
ised plastic storage tank (with connection facility for a ROTEX
air-water heat pump).
– ROTEX GCU compact: Solar storage tank with integrated gas
condensing boiler.
– ROTEX HPSU compact: Solar storage tank with integrated
internal unit of an air-water heat pump.
Construction, operating principle, commissioning, and
operation of other Solaris components are not
described in this manual. Detailed information about the
components can be seen in the operating and installa-
tion instructions of the individual units.
The handling instructions and descriptions in this manual are
valid for all ROTEX storage tanks to be used in conjunction with
this solar system, even if only one type (z. B. SCS) is used for
illustrative purposes. Where other cylinders deviate, this will be
pointed out separately.
FA ROTEX Solaris RPS4 - 04/2016
Electronic control
The fully electronic ROTEX Solaris R4 regulator ensures op-
timum utilisation of the solar heat (hot water generation, heating
support) and that all safety-relevant aspects are complied with.
All parameters needed for trouble-free operation have been
preset at factory.
3.3 System components
3.3.1 Regulation and pump unit RPS4
16 41 26
Consists of:
1
Cover
2
Connecting pipework to the solar operating pump
3
ROTEX Solaris R4 regulator with storage tank temperature sen-
sor, return flow temperature sensor, connecting cable solar panel
temperature sensor, FlowSensor, connection cable 230 V mains
connection (3 m)
4
Accessories bag (angle, 4 countersunk head screws, 4 self-tap-
ping screws, sensor plugs, plastic plugs)
5
Mounting material (retaining bracket for pump mounting, holding
bar and fixing bracket for controller)
6
Solaris Documentation
Fig. 3-2
Regulation and pump unit (RPS4)
3
x
Manual operation
7
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