Gebwell GEMINI 40, Installation, Operation And Maintenance Manual

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22 Gebwell GEMINI
NOTE! The resistor controls are connected to controller 2!
The thermostat and overheat protector combination, included in
the delivery of the accumulator electric heater, must be con-
nected to each electric heater. The thermostats must be adjusted
at a value greater than the maximum set point defined for the
heat pump.
Connecting electric heaters directly to the group distribution
board can cause excessive power consumption. We recommend
installing always a separate automatic transfer switch for con-
trolling the electric heaters.
Control relays of electric heaters:
Controller 2:
QX1 Electric heater of output water K25
Connector W Control 230VAC
Controller 2:
QX2 Electric heater of output water K26
Connector W Control 230VAC
Controller 2:
QX3 Electric heater of domestic hot water K6
Connector X Control 230VAC
If both of the Gemini compressors in a cascade system have been
connected to produce domestic hot water, the heating resistor
control is to be connected to the first device that only produces
heating. In that case, the resistors must also be programmed to
the QX relay outputs of said controller.
8.9 Change-over valve(s)
Change-over valves are connected to the heat pump control cen-
tre’s row connectors Q3, N and L10.
In a cascade system, the
connection is ALWAYS made to the master device.
Q3 = black (control 230VAC)
N = blue
L10 = brown (continuous 230VAC)
Actuator connection:
8.10 Heating circuits
Three heating circuits can be controlled with the heat pump con-
troller. The circuits can be pump or mixing circuits. Note that
when connecting the heating group’s pump, the control’s maxi-
mum current is 0,7 A. If the pump’s current is greater than the
maximum current permitted for the controller, the pump must
have a separate pump control centre.
MIXING HEATING CIRCUIT
The heat pump’s controller can be used to control one heating
control group and one pump heating circuit. The heating’s first
control group is always connected to the heat pump’s controller.
If there are more than one control groups, the heat pump must be
equipped with a GW-extension module.
Mixing heating circuit:
BX11 Output water sensor
Connector p ntc10k
QX10 3-way valve open
QX11 3-way valve closed
Connector T Control 230VAC, 3-point
QX9 Mixing heating circuit’s pump
Connector S Control 230VAC, max 1,5A
PUMP HEATING CIRCUIT
The pump heating circuit’s circulation pump is connected to the
heat pump’s controller.
QX12 Pump heating circuit’s pump
Connector U Control 230VAC, max 0,7A
HEATING
CIRCUIT PUMP
MAX 0,7A
MIXING HEATING CIR-
CUIT PUMP MAX 0,7A
HEATING CIRCUIT 1
OUTPUT WATER
HEATING CIRCUIT 1
VALVE MOTOR
230V 3-PHASE
CONTROL
ACCESSORY
Control, Electrical heater
DHW K6 (CUK3)
ACCESSORY
Control, Electrical heater
Outp. Wat. K25 (CUK3)
ACCESSORY
Control, Electrical heater
Outp. Wat. K26 (CUK3)
BR
BLU
BL
BR
BLU
BL
WH
BR
BR
BLU
WH
WH
BR
BLU
Y/GR Y/GR
Y/GR
Y/GR