Daikin VRV 5-S Series, Инструкция по установке и эксплуатации

Страница: 33 / 48

16 Finishing the outdoor unit installation
Installation and operation manual
33
RXYSA4~6A7V/Y1B
VRV 5-S system air conditioner
4P600329-1A – 2020.01
▪ It is recommended to install a PG type cable gland in the
knockout hole.
▪ When you do not use a cable gland, protect the cables with
vinyl tubes to prevent the edge of the knockout hole from
cutting the wires:
a b
A B
c d e
A Inside of the outdoor unit
B Outside of the outdoor unit
a Cable
b Bush
c Nut
d Frame
e Tube
8 Route the cables out of the unit.
WARNING
Avoid sharp edges when routing cables to the rear. Make
sure to route the cables through the left side of the
accumulator foot when passing through the tunnel:
NOTICE
Precautions when making knockout holes:
▪ Avoid damaging the casing and underlying piping.
▪ After making the knockout holes, we recommend to
remove the burrs and paint the edges and areas
around the edges using repair paint to prevent rusting.
▪ When passing electrical wiring through the knockout
holes, wrap the wiring with protective tape to prevent
damage.
9 Reattach the service cover. See "12.2.2 To close the outdoor
unit" [
4
23].
10 Connect an earth leakage circuit breaker and fuse to the power
supply line.
15.4 To connect the external outputs
SVS
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 indoor unit).
a
b
X2M
a SVS output terminals (1 and 2)
b Cable to SVS output device
Specifications of the SVS output
Maximum voltage <40 VDC
Maximum current 0.025 A
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
The SVEO output is a contact on terminal X1M that closes in case of
occurrence of general errors. See
"8.1 Error codes: Overview" [
4
20]
and "19.1.1 Error codes: Overview" [
4
39] for errors that will trigger
this output.
The contact has a capacity of 220~240 VAC – 0.5 A. 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
16 Finishing the outdoor unit
installation
16.1 To insulate the refrigerant piping
After finishing the charging procedure, the piping must be insulated.
Take into account the following points:
▪ Make sure to insulate the connection piping and refrigerant branch
kits entirely.
▪ Be sure to insulate the liquid and gas piping (for all units).
▪ Use heat resistant polyethylene foam which can withstand a
temperature of 70°C for liquid piping and polyethylene foam which
can withstand a temperature of 120°C for gas piping.
▪ Reinforce the insulation on the refrigerant piping according to the
installation environment.