16 Electrical installation
Installation and operation manual
33
RXYSA4~6A7V/Y1B
VRV 5-S system air conditioner
4P600329-1E – 2023.02
SVS connection requirements
Wire size
Only use harmonised wire providing double
insulation and suitable for 220~240 V
2-core cable
Minimum cable section of 0.75 mm²
Polarity of terminal 1
+
Polarity of terminal 2
–
It is mandatory to use a surge killer to protect the internal circuit of
the outdoor unit PCB (e.g. a separate surge killer diode or a relay
with a built-in surge killer diode).
Example:
1
X2M
2
+
–
24 V DC
240 V AC
+
–
a
b
e
d
c
f
a
SVS output terminal
b
DC power supply
c
Relay
d
Surge killer diode
e
AC power supply
f
External alarm
SVEO output
The SVEO output is a contact on terminal X1M that closes in case of
occurrence of general errors. See
and
"20.1.1 Error codes: Overview"
39] for errors that will trigger
this output.
SVEO connection requirements
Voltage
220~240 V AC
Maximum current
0.5 A
Wire size
Only use harmonised wire providing double
insulation and suitable for the applicable
voltage
2-core cable
Minimum cable section of 0.75 mm²
For the SVEO connection it is recommended to use a shielded
cable. The cable shield must be earthed at the marked earthing point
that is located on the support frame of the terminal.
Y1
V1
c
a
b
c
a
b
1 2
1 2
X1M
X1M
a
Earthing point
b
Cable shield
c
Cable to SVEO output device
INFORMATION
Sound data about the refrigerant leakage alarm are
available in the technical data sheet of the user interface.
E.g. the BRC1H52* controller generates an alarm of 65 dB
(sound pressure, measured at 1 m distance from the
alarm).
16.5
To connect the cool/heat selector
switch option
In order to control the cooling or heating operation from a central
location,
the
following
optional
cool/heat
selector
switch
(KRC19-26A) can be connected:
1
Remove the mounting screw from the terminal mounting plate.
V1
Y1
2
Turn the terminal mounting plate to reach the other side of the
plate.
Y1
V1
3
Connect the cool/heat selector switch to terminal X3M.
Y1
V1
X3M
X3M
KRC19-26A
1
2
3
A
B
C
X3M
X3M
Terminal on the unit
KRC19-26A
Cool/heat selector switch
4
Turn back the terminal mounting plate and reinstall the screw.
5
Fix the cables with cable ties.
V1
b
a
Y1
b
a
X3M
X3M
a
Cool/heat selector switch cable
b
Cable tie
6
Turn ON the DIP switch (DS1‑1). See
Содержание VRV 5-S RXYSA4A7V1B
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