To Connect The Cool/Heat Selector Switch Option - Daikin VRV 5-S RXYSA4A7V1B Installation And Operation Manual

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:
+
b
X2M 24 V DC
–
1
2
a
+
d
– c
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
Overview" [ 4 39] for errors that will trigger
and "20.1.1 Error codes:
this output.
SVEO connection requirements
Voltage
Maximum current
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.
V1
X1M
1 2
a
b
c
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).
RXYSA4~6A7V/Y1B
VRV 5-S system air conditioner
4P600329-1E – 2023.02
+
–
240 V AC
e
f
Overview" [ 4 14]
"8.1 Error codes:
220~240 V AC
0.5 A
Y1
X1M
1 2
a
b
c
16 Electrical installation
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
(KRC19-26A) can be connected:
1 Remove the mounting screw from the terminal mounting plate.
V1
2 Turn the terminal mounting plate to reach the other side of the
plate.
V1
3 Connect the cool/heat selector switch to terminal X3M.
V1
1 A
X3M KRC19-26A
2 B
3 C
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
a
b
a Cool/heat selector switch cable
b Cable tie
6 Turn ON the DIP switch (DS1‑1). See
components" [ 4 35] for more information on the DIP switch.
cool/heat selector switch
Y1
Y1
Y1
Y1
a
b
"18.1.3 Field setting
Installation and operation manual
33