Daikin SV1A25AJV1B - Page 99

16 | Electrical installation
Installer and user reference guide
99
SV1A25AJV1B+SV4~8A14AJV1B
VRV 5 safety valve unit
4P749917-1 – 2023.09
d Extraction fan
SVS output (external alarm)
The SVS output is a potential-free contact on terminal X6M that closes in case a
leak is detected in the SV unit.
The SVS output must be used when an external alarm is required (see "13.3 To
determine the required safety measures"[445]).
FAN
1 2
b
SVS
1 2
X6M
a
a SVS output terminals (1 and 2)
b Cable to external alarm circuit
NOTICE
The SVS output is a potential-free contact with a limited capacity of 220~240VAC –
0.5A.
Do NOT directly use the SVS contact in the alarm circuit. Instead, use the SVS contact
in conjunction with a power supply to energise a relay that controls the external
alarm circuit.
X6M
(SVS)
a
1
2
b d
c
e
EXAMPLE
a SVS output terminal
b Relay power supply
c Relay
d External alarm power supply
e External alarm
Cable routing
Route the FAN or SVS output cable as indicated below. Leave ±20 cm additional
length of cable to lower the switch box.
c
b
c
a
SV1~8A
X1M
X6M
a Power supply cable (field supply)
b Output cable (FAN cable shown)(field supply)
c Cable tie (accessory)