To Connect The External Outputs; To Check The Insulation Resistance Of The Compressor - Daikin VRV 5 RXYA8A7Y1B Installation And Operation Manual

17 Electrical installation
NOTICE
When connecting the earth wire, align the wire with the cut
out section of the cup washer. Incomplete earthing may
cause electrical shock.
Multiple outdoor units
To connect the power supply for multiple outdoor units to each other,
ring tongues have to be used. No bare cable can be used.
In that case, the ring washer that is installed by default should be
removed.
Attach both cables to the power supply terminal as indicated below:
L1 L2 L3 N
17.9

To connect the external outputs

SVS and SVEO output
The SVS and SVEO outputs are contacts on terminal X2M.
The SVS output is a contact on terminal X2M that closes in case a
leak is detected, failure or disconnection of the R32 sensor (located
in the SV unit or indoor unit).
The SVEO output is a contact on terminal X2M that closes in case of
occurrence of general errors. See
Overview" [ 4 54] for errors that will trigger
and "22.1.1 Error codes:
this output.
Outdoor output connection requirements
Voltage 220~240 V
Maximum current 0.5 A
Wire size Only use harmonised wiring providing double
insulation and suitable for the applicable
voltage.
2-core cable
Minimum cable section of 0.75 mm²
NOTICE
Do NOT use the outputs as a power source. Instead, use
each output to energize a relay that controls the external
circuit.
WHT BLK GRY PPL
X2M
SVEO SVS
c
a b
a SVEO output terminals (1 and 2)
b SVS output terminals (1 and 2)
c Cable to SVS output device (example)
Example:
X2M
1
b
2
(SVS)
a
a SVS output terminal
b Relay
c AC power supply 220~240 V AC
d External alarm
Installation and operation manual
44
Overview" [ 4 15]
"8.1 Error codes:
c
d
Cable routing
Route the SVEO or SVS output cable as indicated below.
5~12 HP
a Output cable (SVEO or SVS)(field supply)
b Cable tie (accessory)
Alternate routing
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).
17.10 To check the insulation resistance
of the compressor
NOTICE
If, after installation, refrigerant accumulates in the
compressor, the insulation resistance over the poles can
drop, but if it is at least 1 MΩ, then the unit will not break
down.
▪ Use a 500 V mega-tester when measuring insulation.
▪ Do NOT use a mega-tester for low voltage circuits.
1 Measure the insulation resistance over the poles.
If
≥1 MΩ Insulation resistance is OK. This procedure is
finished.
<1 MΩ Insulation resistance is not OK. Go to the next step.
2 Turn ON the power and leave it on for 6 hours.
Result: The compressor will heat up and evaporate any
refrigerant in the compressor.
3 Measure the insulation resistance again.
14~20 HP
b
b
b
a
b
Then
RYMA5+RXYA8~20A7Y1B
VRV 5 heat pump
4P739915-1 – 2023.12