RX(Y)Q5-10-1 RXQ RXYQ
RXYHQ1 RX(Y)Q14~18P7W1BA
VRVIII System air conditioner
4PW48461-1
Installation manual
16
8.7.
Field line connection: transmission wiring and
cool/heat selection
In case of RX(Y)Q5~18 + RXYHQ12
(See figure 19)
In case of RXYQ20~54 + RXYHQ16~36
(See figure 20)
■
The interconnecting wiring between the outdoor units in the
same piping system must be connected to the Q1/Q2 (Out Multi)
terminals. Connecting the wires to the F1/F2 (Out-Out) terminals
results in system malfunction.
■
The wiring for the other systems must be connected to the F1/F2
(Out-Out) terminals of the P-board in the outdoor unit to which
the interconnecting wiring for the indoor units is connected.
■
The base unit is the outdoor unit to which the interconnecting
wiring for the indoor units is connected.
Fixing transmission wiring
(See figure 23)
Inside switchbox
Outside unit
1
Cool/heat selector (not required for cooling only units)
2
Outdoor unit PC board (A1P)
3
Take care of the polarity (not required for cooling only units)
4
Use the conductor of sheathed wire (2 wire) (no polarity)
5
Terminal board (field supply)
6
Indoor unit
7
Outdoor unit
1
Unit A (Master unit)
2
Unit B (Slave unit)
3
Unit C (Slave unit)
4
To slave unit(s)
5
To indoor unit
6
To outdoor unit
7
To cool/heat selector
NOTE
RXYQ5 can not install the multi unit transmission
wiring. Run will not be successful if the wiring is
connected to Q1-Q2 (TO MULTI UNIT) terminal.
1
Heating/cooling switching remote control cord (when a heating/
cooling switch remote control (optional) is connected) (ABC) (not
for RXQ5~18)
2
Fix to the indicated plastic brackets using field supplied clamping
material.
3
Wiring between the units (Outdoor - outdoor) (F1+F2 right)
4
Wiring between the units (Indoor - outdoor) (F1+F2 left)
5
Wiring for multi connection (only for RXYQ20~54 +
RXYHQ16~36) (Q1+Q2)
6
Plastic bracket
■
Be sure to follow the limits below. If the unit-to-unit
cables are beyond these limits, it may result in
malfunction of transmission.
-
Maximum wiring length:
1000 m
-
Total wiring length:
2000 m
-
Maximum interunit wiring length
between outdoor units:
30 m
-
Transmission wiring to cool/heat
selector:
500 m
-
Maximum number of branches:
16
■
Maximum number of independent interconnectable
systems :
10.
■
Up to 16 branches are possible for unit-to unit cabling.
No branching is allowed after branching.
(See figure 16)
■
Never connect the power supply to transmission
wiring terminal block. Otherwise the entire system
may break down.
■
Never connect 400 V to the terminal block of the
interconnecting wiring. Doing so will break the entire
system.
-
The wiring from the indoor units must be
connected to the F1/F2 (In-Out) terminals on the
PC board in the outdoor unit.
-
After installing the interconnecting wires inside the
unit, wrap them along with the on-site refrigerant
pipes using finishing tape, as shown in
figure 12
.
For the above wiring, always use vinyl cords with 0.75
to 1.25 mm
2
sheath or cables (2-core wires). (3-core
wire cables are allowable for the cooler/heater
changeover remote controller only.)
■
Be sure to keep the power line and transmission line
apart from each other.
■
Be careful about polarity of the transmission line.
■
Make sure that the transmission line is clamped as
shown in
figure 23
.
■
Check that wiring lines do not make contact with
refrigerant piping.
■
Firmly close the lid and arrange the electrical wires so
as to prevent the lid or other parts from coming loose.
■
When you do not use a wire conduit, be sure to
protect the wires with vinyl tubes etc, to prevent the
edge of the knock-out hole from cutting the wires.
(TO OUT/D UNIT F1-F2)
1
Outdoor unit
2
Indoor unit
3
Main line
4
Branch line 1
5
Branch line 2
6
Branch line 3
7
No branch is allowed after branch
8
Central remote controller (etc...)
A
Transmission wiring between outdoor unit and indoo
unit(s)
B
Transmission wiring between outdoor units
1
Liquid pipe
2
Gas pipe
3
Insulator
4
Interconnecting wiring
5
Finishing tape
Summary of Contents for RXYHQ12P8W1B
Page 36: ...NOTES NOTES...
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