Safety Instructions; Unit Description; General; Functioning - Daikin ROTEX GW-20 H18 Installation Instructions Manual

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SAFETY INSTRUCTIONS

The manufacturer ROTEX Heating Systems GmbH accepts no liability for damage or
injury caused by the failure to (strictly) observe the safety instructions, or negligence
during the installation of the Rotex RHOB*AAV1H wall-mounted gas boiler and any
associated accessories.
This device is not intended for use by people (including children) with reduced
physical, sensory or mental abilities, or lack of experience and knowledge, unless they
are given supervision or instructions on the use of the device by a person who is
responsible for their safety.
The entire installation must meet the applicable local technical and (safety)
instructions, for the gas installation, the electrical installation, smoke extraction
installation, drinking water installation, and central heating installation.
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UNIT DESCRIPTION

2.1

General

The Rotex RHOB*AAV1H wall-mounted gas boiler is a closed unit. The unit is intended
to provide heat to the water of a CH-installation and the domestic hot water installation.
The air supply and combustible gas outlet can be connected to the unit by means of
two separate pipes. A concentric connection can be supplied upon demand. The unit
was tested in combination with the combi feedthrough, but the unit may also be
connected to combi feedthroughs which meet the universal test standards for combi
feedthroughs.
The unit can be connected to an assembly bracket if required, a frame with top
connection, and various installation sets. These are provided separately.
The Rotex RHOB*AAV1H wall-mounted gas boilers have the CE marking, electrical
protection class IP44.
The unit is delivered for natural gas (G20) as a standard. On request, the unit can also
be provided for propane (G31).
2.2

Functioning

The Rotex RHOB*AAV1H wall-mounted gas boiler is a modulating high-efficiency
boiler. This means that the power is modulated to suit the required heat demand.
A copper CH circuit is integrated in the aluminum heat exchanger.
The water of the DHW installation can be heated by connecting the unit to an indirectly
heated tank using a three-way valve and tank sensor (see par.5.1 and 5.2). The built in
tank regulation of the unit ensures the domestic hot water provision takes precedence
over the heating. Both cannot work at the same time.
The unit is fitted with an electronic boiler controller, which operates the fan at every
heat requirement of the heating or the warm water supply, opens the gas valve, ignites
the boiler controller, and continuously monitors and regulates the flame, depending on
the requested power.
2.3

Operating modes

The operating mode of the unit is indicated by means of a code on the service display
of the operating panel.
-
Off
The unit is not in operation, but is connected to the electricity supply. No response is
given to requests for domestic hot water or CH water. The unit frost protection is
active. This means that the pump will start running and the exchanger will be heated
up if the temperature of the water in the system drops too far.
If the frost protection intervenes, the code
The pressure in the CH installation can also be read from the temperature display in
this operating mode (in bar).
Standby
The LED at the key is lit and possibly one of the LEDs of the tap comfort function.
The unit is ready to respond to a request for CH or tap water.
ROTEX Heating Systems GmbH
will be displayed (heating up exchanger).
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