Mitsubishi Heavy Industries FDCW60VNX-W, Руководство по установке

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34
Electrical installation
Step controlled additional heat
NOTE
Mark up any junction boxes with warnings for
external voltage.
External step controlled additional heat can be controlled by up
to three potential-free relays in the control module (3 step
linear or 7 step binary). Alternatively two relays (2 step linear
or 3 step binary) can be used for step controlled additional
heat, which means that the third relay can be used to control
the immersion heater in the water heater/accumulator tank.
Step in occurs with at least 1 minute intervals and step outs
with at least 3 seconds intervals.
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relay board (AA7).
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relay board (AA7).
Step 3 or immersion heater in the water heater/accumulator
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relay board (AA7).
The settings for step controlled additional heat are made in
menu 4.9.3 and menu 5.1.12.
All additional heat can be blocked by connecting a potential-
free switch function to the software controlled input on
terminal block X2 which is selected in menu 5.4.
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A1
A2
A1
A2
A1
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A2
External
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20/40
AA7-X2 X1
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X1
1 1 N L 0 E P 2 3 4
-X2
1
12
34
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2 3 4 5 6
-X1
AA7-X2
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If the relays are to be used for control voltage, bridge the
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additional relay board (AA7). Connect the neutral from the
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Use a cable with appropriate cross section.
For connection, see the installation manual for additional
heater.
Optional connections
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Room sensor BT50
Room sensor can be connected to controller.
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1. Show current room temperature in the control module
display.
2. Option of changing the room temperature in °C.
3. Makes it possible to change/stabilise the room temperature.
Install the sensor in a neutral position where the set temperature
is required. A suitable location is on a free inner wall in a hall
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Do not install the sensor where correct room temperature
cannot be detected such as in a recess, between shelves, behind
a curtain, above or close to a heat source, in a draft from an
external door or in direct sunlight.
Closed radiator thermostats can also cause problems.
The control module can operate without the sensor, but if user
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controller display, the sensor must be installed.
Connect the room sensor to the port 7 and 10 on X2 terminal.
If the sensor is to be used to change the room temperature in
°C and/or to change/stabilise the room temperature, the sensor
must be activated in menu 1.9.4.
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should only have an indicatory function, not control of the
room temperature.
9
10
11
6
8
7
External RC-HY 20
X2
BT50
RC-HY20
X2
CAUTION
Changes of temperature in accommodation
take time. For example, short time periods in
combination with underfloor heating will not
give a noticeable difference in room temperature.
Use two-core cable with a minimum 0.5mm
2
cross section.