EC POWER XRGI 20G-TO, Manual

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Version 1.0 - 2012 Manual XrGi 20G-To
Fig. 2.23.
Fig. 2.24.
WIRING
NORMALLY OPEN Brown
COMMON White
NORMALLY CLOSED Green
MAX
230 V
3 A
NORMALLY OPEN
COMMON
NORMALLY CLOSED
FUNCTION
R1 Boiler
off
on
Function
The Boiler Control is used to control the boiler depending on the heat consumption. If more heat is consumed than the XRGI
system can generate, the boiler is started. If less heat is consumed than the XRGI system generates, the boiler is blocked.
The Boiler Control is controlled via the top two sensors, S1 and S2, in the storage tank. If the heat consumption exceeds the
heat generation by the XRGI system, storage tank sensor S1 will be cold: as a result, the Boiler Control enables the boiler until
storage tank sensor S2 is registered as hot. When that happens the Boiler Control blocks the boiler again. If the heat con-
sumption continues to be greater than heat generation by the XRGI system, the storage tank is cooled down, and the boiler is
enabled when storage tank sensor S1 goes cold. This avoids short boiler operating times and makes for a better use of energy.
If the boiler is controlled via a Boiler Control unit, the boiler cannot start up by itself and produce heat. Hence it cannot reduce
the operating time of the XRGI system.
Storage Tank (01KIT2500) Storage Tank (01KIT2501)
Scope of supply: Storage Tank Storage Tank
Size (H x W x D): 172 x 69.5 x 69.5 cm 172 x 69.5 x 69.5 cm
Weight: 80 kg 80 kg
Max. op. pressure: 3 bar 6 bar
Network cable: 5m Q-Network Cable 5m Q-Network Cable
(SFTP (CAT 6) network cable) (SFTP (CAT 6) network cable)
Thermal capacity: 22 kWh 22 kWh
(at 40 °C return temperature) (at 40 °C return temperature)
Capacity: 475 l 475 l
2.2.1.4. storage Tank