Installer Connections; Remote On/Off; Remote Control, Domestic Hot Water Only; Remote Keypad Kit - CLIMAVENETA WWR MTD - MTD/s, BWR MTD - MTD/s Installation And User Manual

INSTALLER CONNECTIONS

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 16 and 17 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 SUMMER-WINTER SWITCHING (SA2)
To use a remote summer/winter changeover device, connect
the contact of the device to terminals 18 and 19 on the
installer terminal board.
To activate the device, proceed as follows:
- From the HSW12 control panel select parameter CL43
and set it to the value -3 (contact closed = winter, contact
open = summer)

REMOTE CONTROL, DOMESTIC HOT WATER ONLY

To use a remote device to switch from heat pump operation to
domestic hot water only mode (AS), connect the contact from
the device to installer terminals 16 and 17 (contact SA1).
To activate the control, proceed as follows:
On control panel HSW12, select parameter CL42 and set the
value +28 (contact closed = domestic hot water only, contact
open = system heat pump operation, in the mode selected
by remote contact SA2, if there is no DHW request).
Digital input Configuration
SA1 CL42= +28
SA2 CL43= +3
Wiring diagram:
16 17 18 19
SA1
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 (A5)
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;
Function
DHW only/priority
Domestic hot water + System
COOL/HEAT
SA1 SA2
- connect the remote control module with 3 wires to termi-
nals 26, 27 and 28 on the installer terminal board:
terminal 26 connected to the GND/black terminal on the
keypad;
terminal 27 connected to the signal/blue terminal on the
keypad;
terminal 28 connected to the +12VDC/red terminal on the
keypad;
- The outside air temperature sensor can be connected to
the terminals on the remote keypad. To enable the outside
air temperature sensor, set parameter CR31=9.
To avoid interference due to magnetic fields, the use of
shielded cable is recommended. The cable should not
be more than 100 m long.
COMPULSORY FLOW SWITCH CONNECTIONS
The system flow switch (F3) must be connected to terminals
20 and 21. The source flow switch (F5) must be connected
to terminals 22 and 23.
COMPRESSOR ON SIGNAL (GN1)
For remote display of the compressor operating status, an
audible or visual alarm warning device can be connected
between terminals 14 and 15. Connect the phase to terminal
15 and the signal device between terminal 14 and the neutral.
DOMESTIC HOT WATER 3-WAY VALVE
To configure a 3-way for the production of domestic hot water
(supplied by Climaveneta), make the following connections:
- terminal 9 on the heat pump connected to the phase L
- terminal 8 on the heat pump connected to the black 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 Climaveneta, 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.
For further details, see the chapter on "Operating character-
istics".
DOMESTIC HOT WATER STORAGE TEMPERA-
TURE SENSOR (BT4)
The domestic hot water temperature inside the storage
cylinder is measured using sensor BT4, connected to termi-
nals 24 and 25.
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".
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