EC POWER XRGI 20G-TO, Manual

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Version 1.0 - 2012 Manual XrGi 20G-To
Function
When the storage tank is full the Flow Control tries to achieve the desired mix temperature (set point).
The mix temperature is selected by entering the set point. As soon as the mix temperature falls below the set point, the control
valve opens and the discharge pump in the Q60-Heat Distributor starts up.
When heat consumption is lower or when the return temperature is high the storage tank is filled. The system stops once the
tank is full. It only resumes operation when the storage tank has sufficient cooling capacity to provide a stable operating period.
When the XRGI system is disabled, heat is delivered from the storage tank.
If heat consumption is higher, however, the storage tank makes up the lack of heat. Once the storage tank has been emptied
completely (the temperature at the top of the storage tank drops), the Flow Control selects a reduced set point temporarily in
order to maintain the layer temperature and maximum heat generation.
Without a layer temperature the system is unable to maintain a stable flow temperature as long as the storage tank is not full.
With a cold start the Flow Control starts by creating layers in the storage tank. Only then does the control valve open and the
discharge pump start. This ensures that the maximum heat output is rapidly available.
The Boiler Control ensures optimum operation of a peak load boiler in conjunction with the XRGI system.
The Boiler Control can be used if an additional heat source is available in the XRGI system apart from the Power Units.
Configuration
Once the Boiler Control has been installed it does not need to be adjusted further.
Boiler Control (01ELT2033)
Scope of supply: Boiler Control unit, one control cable, one network cable
Size (H x W x D): 3,5 x 13 x 8 cm
Weight: 165 g
Cable length: 3 m
Cable dimensions: 3 x 0.5 mm²
Network cable: 10 m Q-Network cable (SFTP (CAT 6) network cable)
2.2.1.3. Boiler Control
Note: if a boiler is connected, its thermostat temperature must be set at least 5°C lower than the
Flow Control set point to make sure the XRGI system is prioritized in the provision of heat.
Fig. 2.22.