REMKO EFS 25 - Manual (Page 12)

5 Circulation operation
The fresh water station is (optionally) equipped
with a circulation pump. Three possible operating
modes are stored in the controller to operate the
circulation pump (also see the operating instruc-
tions of the controller).
n Pulse-controlled operation (as necessary /
requirement):
Actuating a hot water dispensing connection
for a short time (dispensing impulse: ~2 sec-
onds) starts the circulation pump. The circula-
tion pump then runs for a few minutes (adjust-
able).
n Time-dependent operation:
Operation of the circulation pump can be
adjusted on a weekly timer within a freely-
selectable period. In this operating mode, cir-
culation begins at the start of the period that is
set. Circulation is deactivated after the set
period expires.
n Temperature-dependent operation:
In this operating mode, circulation is only
started if the temperature falls below the min-
imum temperature that can be set on the circu-
lation temperature probe within the operation
period. Circulation is deactivated after the
adjustable target temperature is reached or
after the set period expires.
Any of the operating modes can be combined, e.g.
time-dependent and temperature-dependent oper-
ation. In this case, circulation is only active if the
temperature falls below the temperature on the cir-
culation temperature probe and the time window is
active. Outside this time window, the circulation
pump can be activated via a dispensing pulse if
pulse-controlled operation is also activated.
NOTICE!
In the delivered state, circulation is not acti-
vated (see the operating instructions of the
controller). If the REMKO circulation pump is
installed, the operating mode must be activated
urgently. The speed of the circulation pump
must be specified via the PWM signal. ( Fac-
tory setting: 0 % ).
6 Assembly and installa-
tion (Specialist)
DANGER!
Danger due to electric shock!
– Remove the power plug before carrying out
electrical work on the controller!
– Plug the power plug of the controller back
in to a socket only after completing all
installation works. In this way, you can pre-
vent the motors from starting up acciden-
tally.
NOTICE!
To avoid damage to the system, the installation
location must be dry, capable of carrying the
load and frost-free.
If the fresh water station is not installed directly on
the storage tank, note the following points:
1. Determine the installation location of the
fresh water module near to the buffer tank.
On the heating side, the pipes must not
exceed a length of 4 m for DN 20.
2. Transfer the dimensions for the holes to the
wall. A corresponding drilling template is pro-
vided on the board under the fresh water
module
3. Drill the holes and insert the enclosed wall
plugs.
4. Turn the screws into the wall plugs until
around 40 mm is sticking out of the wall.
5. Remove the front insulation jacket.
REMKO fresh water station
12