Mitsubishi Heavy Industries FDCW100VNX-A, Техническое руководство

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Installation
'19 • HM-T-340
Indoor unit installation
• Temperature sensor BT63, outlet at additional heater
This sensor is used in case electric heater is placed before
3-way valve (QN10) for switching heating/hot water (see page
285 for diagram).
Connect temperature sensor, external supply after electric
heater (BT63) to the port 9 and 10 on terminal X2.
9
10
11
6
8
7
X2
BT63
RC-HY20 -W
X2
• Temperature sensor BT25, outlet for heating
This sensor is used in case electric heater is placed after 3-way
valve (QN10) for switching heating/ hot water (see page 286
for diagram).
Connect temperature sensor, external supply (BT25) to the port
8 and 10 on X2 terminal.
9
10
11
6
8
7
X2
BT25
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X2
• Temperature sensor BT71, return line for heating
This sensor is used in case electric heater is placed after 3-way
valve (QN10) for switching heating/ hot water (see page 286
for diagram).
For connection, see page 101, AUX inputs.
• Temperature sensor BT64, outlet for cooling
This sensor is used in case cooling application is required.
For connection, see page 101, AUX inputs.
Option connections
Room sensor BT50
Room sensor can be connected to controller.
The room temperature sensor has up to three functions:
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
approx. 1.5 m above the fl oor.
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
wants to read off the accommodation's indoor temperature in
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.
If the room sensor is used in a room with underfl oor heating, it
should only have an indicatory function, not control of the
room temperature.
9
10
11
6
8
7
X2
BT50
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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.
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RC-HY20-W External
RC-HY20-W External
RC-HY20-W External
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