MTD 400 Manuel de service télécharger pdf (Page 17)

17GB 01/2009 AWR MTD - AWR MTD/B

All the terminals referred to in the following explanations are

to be found on the terminal board located inside the electri-

cal panel and called “installer terminals” (see wiring dia-

gram).

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 SUMMER-WINTER SWITCHING (SA2)

To use a remote summer/winter changeover device, connect

the contact of the device to terminals 16 and 17 on the

installer terminal board.

To activate the device, proceed as follows:

- From the HSW11 control panel select parameter CL43

and set it to the value +3 (contact closed = summer, con-

tact open = winter) or -3 (contact closed = winter, contact

open = summer).

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

keypad;

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 Climaveneta), make the following con-

nections:

- 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 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.

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 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 character-

istics”.

INSTALLER CONNECTIONS

I A

1 2 ... 12 13 14 15 16 17 18 19 20 21 22 ... 51 52

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MTD 400 Manuel de service Page 17

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