Contents
Introduction
The ROTEX GasSolarUnit/GasCompactUnit is
a completely installed gas fired condensing
heating system with integral domestic hot
water (DHW) heating system. All DHW and
central heating functions for the direct
connected and an optional mixed heating
circuit as well as for one cylinder primary
circuit are automatically regulated by the
standard micro-controller. For even higher
convenience, a digital room station (ROTEX
THETA RS, part no. 15 70 18) and a room
controller set (THETA RFF, part no. 154070) are
available as option.
A further mixed heating circuit and/or cylinder
primary circuit can be operated in conjunction
with the optionally available heating circuit
extension module (THETA HEM1,
part no. 15 60 61).
Every parameter required for a convenient
operation has already been programmed at the
factory. Except for the operation of the control
unit (separate instruction manual is part of the
standard delivery), all activities and controls
required for the installation, commissioning,
operation and individual adjustment are
described in the following.
The ROTEX GasSolarUnit includes a high-grade
solar stratification cylinder as standard. The
system can therefore, with only few additional
components, extended to become a solar heat-
ing system with solar DHW heating and solar
central heating backup. Your ROTEX specialist
will be happy to provide your with further
information.
With the GasCompactUnit, the entire cylinder
volume is utilised as high performance DHW
cylinder. It is not designed for direct solar
applications.
Please read these instructions carefully
before commencing the installation or
prior to working on the system.
The installation, connection and commission-
ing must be carried out by an authorised
contractor. Afterwards, the system should be
handed over by the installer to the user. For
this, the user must be instructed in the
operation and control of the heating
equipment. The handover should be recorded
by jointly completing and signing the
installation and training form supplied.
The symbol and further warning symbols
highlight safety information. The symbol
identifies text passages that are particularly
important to achieve an optimum utilisation
(adjustments, monitoring, etc).
Chapter 1: Safety instructions
and warranty statement 3
Safety instructions 3
General warranty terms 4
Declaration of conformity 4
Chapter 2: General function and
Component description
2.1 Principle of operation 5
2.2 Component description 8
Chapter 3: Positioning and installation
3.1 Delivery 12
3.2 Installation versions 12
Information regarding the installation
in garages 12
General information regarding
the flue gas system 13
3.3 Positioning 15
3.4 Connecting the GasSolarUnit 16
Connection of the flue gas and
ventilation air lines 16
Flue outlet straight out of the back 16
Flue outlet out of the side and back 16
Flue with roof outlet 18
Supplementary assemblies 18
Connection of heating and DHW lines 18
Low water indicator 18
Connection of the gas supply pipe -
checking the gas type and
burner settings 19
Connection, condensate drain 20
Connection, electrical cables/leads 20
Temperature sensor connection 21
Pumps, three-way diverter valve 22
Optional connection options 22
Mixer circuit connection
Room thermostat connection
Room station connection
3.5 Filling 23
DHW heat exchanger 23
Unpressurised cylinder 23
Heating circuit 23
3.6 Initial start-up 24
Testing the high limit safety cut-out 24
3.7 Standards and guidelines 24
Check list prior to commissioning 25
Check list post commissioning 25
Chapter 4: Boiler control panel
4.1 Brief description 26
4.2 Manually adjusting the boiler
water temperature 28
4.3 Replace control unit 28
4.4 Replacing the boiler control panel 29
4.5 Replacing the cables/leads and sensors30
4.6 Replacing the fuse 32
4.7 Replacing the PCB 32
4.8 Component layout - wiring diagram 32
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