Gebwell GEMINI 40 Installation, Operation And Maintenance Manual Download Page 27

Page: 27 / 74

v1-6 29082018

Set the controllers’ line protection F10 and F11 to po-
sition I.

The controller updates the information

Turn the domestic hot water off from the user termi-
nal.

Operating mode: Stop

Set

Simulation

on from the user terminal, +30°C.

With this function, the call for heating is switched off

and the

symbol appears on the display.

Start the venting of the collector and heating network
with the device’s own circulation pumps. (Refer to
section

VENTING: Venting of collector and Venting

of charging circuit)

NOTE! The commissioning of the external source
pump must be carried out prior to venting and acti-
vating the compressor. Refer to

Commissioning of ex-

ternal source pump

for instructions.

In connection with venting the heating network,
check on page 2/27 of the user terminal’s

Source

menu that the heat pump’s return water temperature
and the input water temperature correspond to the
heating system’s water temperature. This indicates
that the charging circuit’s liquid is flowing.

In connection with venting the collector, check on
page 17/27 and 18/27 of the user terminal’s

Source

menu that the

source’s input temperature

(row 8427)

and the

source’s output temperature

(8429) corre-

spond to the ground temperatures. This indicates that
the collector’s liquid is flowing.

Set the compressor’s motor protection F1 to ON posi-
tion

Reset the heat pump from the

Special operations

10.

Set the

Simulation

heating mode from the user termi-

nal to a temperature of -20°C.

11.

If a change-over valve(s) have been installed to the
device, it (they) should turn to position B (flow to
heating network)

12.

Source and charging pumps activate 1 minute before
the compressor.

13.

When the compressor has activated, monitor the tem-
peratures of the ground and charging circuits in the

Source

The controller automatically sets the

condenser’s temperature difference to 7 degrees and
the evaporator to 4 degrees.

Heat pump’s return water temp. (2/27)

Heat pump’s output water temp. (2/27)

Condenser’s temp. difference (16/27)

Source’s input temperature (17/27)

Source’s output temperature (18/27)

Evaporator’s temp. difference (16/27)

Let the heat pump run for about 10-15 mins.

14.

Set the domestic hot water on via the

Domestic Hot

Water

menu in the

Commissioner menu

Operating mode: On

Change-over valve(s) turn to position A

Let the temperature of the domestic hot wa-
ter rise to the set point.

NOTE! The compressor may not be reactivated more often
than 1 activation / 10 mins.

In connection with activating, there is often a “Soft starter fail-
ure E25” failure message. When the motor protection is in ON
position, this usually indicates an error in the phase sequence.
By turning the input’s phase sequence, the heat pump activates
normally.

The heat pump does not register all alarms as alarms after the
first notice, but instead as status data. If the compressor does

not activate and a

-symbol appears on the display, check the

current limitation’s cause in Error history. Troubleshooting
information can be found in the user manual in section TROU-
BLESHOOTING/ALARMS.

10.3

Venting

The collector must be vented extremely thoroughly. Even a
small amount of air in the brine collector will prevent the
pump from functioning normally and can cause it to break
down.

In order to facilitate commissioning and troubleshooting, the
controller features an input and output test function. You must
be on the “

Expert

” level to use this function. The source and

charging pumps can be vented using this function.

Venting the collector

Venting the collector circuit is carried out using controller 2 of
the leading device. Display on the inside of the door.

Turn on the power supply of the source pump

Set the source pump’s manual switch S8 to position I.
→ The source pump activates to the minimum rotation
speed.