Rotex RKOMBG22AAV1, Руководство по установке

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Rotex Heating Systems GmbH
5
2 UNIT DESCRIPTION
2.1 General
The Rotex RKOMBG*AAV1 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 the combustion gas outlet of the RKOMBG*AAV1 can be
connected to the unit by two separate pipes, or by a concentric connection. 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 RKOMBG*AAV1 wall-mounted gas boilers have the CE quality mark,
electrical protection class IP44.
It is possible to use the unit solely for warm water, or solely for heating. The system
which is not in use, does not need to be connected (see par. 7.2).
The unit is delivered for natural gas (G25) as a standard. On request, the unit can also
be provided for propane (G31).
2.2 Functioning
The Rotex RKOMBG*AAV1 wall-mounted gas boiler is a modulating high-efficiency
boiler. This means that the power is modulated to suit the required heat demand. In the
aluminum heat exchanger two separate copper circuits are integrated.
The separate circuits for CH and warm water allow the heating and warm water supply
to function independently. The hot water supply takes precedence over the heating.
Both cannot work at the same time.
The unit is fitted with an electronic boiler controller machine, which operates the fan
and the modulating pump 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. The pump is only
operated during a heat request from the heating, 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
7
will be displayed (heating up exchanger).
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.
0
Post-running CH
After the end of the CH-operation, the pump will post-run. The post-pumping time is set
to the value in par. 7.2 in its factory settings. This setting can be changed. In addition
to this, the pump will run automatically 1 time per 24 hours, for 10 seconds, in order to
prevent it from getting stuck. This automatic switching on of the pump takes place at
the time of the last heating request. In order to change this, the room thermostat needs
to be set higher for a moment, at the required time of day.
1
Requested temperature reached
The boiler controller may temporarily block the heat request. The boiler controller will
then be stopped. The block occurs because the required temperature has been
reached. When the temperature has sufficiently decreased, the block will be lifted.