14
BRAN H
GB 03/2009
All the terminals referred to in the following explanations are
to be found on the terminal board located inside the electrical
panel and called “installer terminals” (see wiring diagram).
REMOTE ON/OFF (SA1)
To use a remote on/off device, connect the contact of the
device to terminals 14 and 15 on the installer terminal board.
Set parameter CL42 = -1.
Remote off corresponds to standby status, with the com-
pressor and pump off, yet all the safety features are active.
REMOTE ALARM (RD1)
For remote display of unit shut-down, an audible or visual
alarm warning device can be connected between terminals
12 and 13.
Connect the phase to terminal 13 and the alarm signal
device between terminal 12 and the neutral.
REMOTE KEYPAD KIT (A4)
The remote keypad kit can be used to display all unit func-
tions and access the parameters of the electronic board
from a point located at some distance from the unit itself.
It consists of a remote control module.
To install the kit, proceed as follows:
- disconnect the power supply and then access the inside of
the electrical panel;
- connect the remote control module with 3 wires to termi-
nals 22, 23 and 24 on the installer terminal board:
terminal 22 connected to the GND/black terminal on the keypad;
terminal 23 connected to the signal/blue terminal on the keypad;
terminal 24 connected to the +12VDC/red terminal on the key-
pad;
To avoid interference
due to magnetic fields, the use of
shielded cable is recommended. The cable should not
be more than 100 m long.
CONNECTING A FLOW SWITCH (F3)
If a flow switch is used, connect it to terminals 18 and 19 on
the installer terminal board, after having removed the
jumper.
COMPRESSOR ON SIGNAL (GN1)
For remote display of the compressor operating status, an
audible or visual alarm warning device can be connected
between terminals 10 and 11.
Connect the phase to terminal 11 and the signal device
between terminal 10 and the neutral.
DOMESTIC HOT WATER 3-WAY VALVE (YV2)
To configure a 3-way for the production of domestic hot water
(supplied by manufacturer), make the following connections:
- terminal 7 on the heat pump connected to the phase L
- terminal 6 on the heat pump connected to the balck wire
on the 3-way valve
- brown wire on the 3-way valve connected to Phase L
- blue wire on the 3-way valve connected to Neutral N
- yellow/green wire connected to earth
The valve is also fitted with a limit switch contact. The con-
tact is either closed or open, depending on the position of
the valve. Limit switch contact (red and green wire):
Closed = Valve open
Open = Valve closed
The 3-way valve for the production of domestic hot water, if
not supplied by manufacturer, should have the following
characteristics:
- Voltage 230V AC, 50/60 Hz
- Opening and closing time 10s.
- P delta 500 kPa
- Fluid temperature 0°C to 90°C
Use three-way valves with a pressure drop below 20 kPa.
DOMESTIC HOT WATER STORAGE TEMPERATURE
SENSOR (BT4)
The domestic hot water temperature inside the storage
cylinder is measured using sensor BT4, connected to termi-
nals 20 and 21.
AUXILIARY HEATING ELEMENT (KM4)
If an auxiliary heating element is used, heater or boiler, con-
nect the control device or contactor, as shown in the wiring
diagram. For further details, see the chapter on “Operating
characteristics”.
INSTALLER CONNECTIONS
I A
U
PE
N
1
2
3
U N
4 5 6 7 8 9
10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
SA1
F3
BT4
A4
+to
Gnd
Signal
+12Vdc
RD1
GN1
KM4
YV2
N
L
230 VAC 1A max
Black
Brown
Y/G
PE
Blue
TERMINAL BLOCK BRAN H SINGLE-PHASE
