To Check The Insulation Resistance Of The Compressor - Daikin VRV 5 RXYA8A7Y1B Installer And User Manual

20.8 To check the insulation resistance of the compressor

RYMA5+RXYA8~20A7Y1B
VRV 5 heat pump
4P749918-1 – 2023.12
X2M
1
2
(SVS)
a
a SVS output terminal
b Relay
c AC power supply 220~240 V AC
d External alarm
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).
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.
c
b
14~20 HP
b
b
b
a
b
Then
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