Daikin VRV System R-22 PLUS Series Manual page 162

Si33-102.book Page 160 Tuesday, June 26, 2001 3:18 PM
Field Wiring
7.6.5 Example of Performing Cool/Heat with Cool/Heat Selector
Cool/heat selector
(optional for heat pump unit only)
Use the conductor of sheathed wire
(2 wire) (no polarity)
Indoor unit Take care of the polarity
7.6.6 Example of Performing Cool/Heat Setting of Two or More Outdoor Units in Block with
Cool/Heat Selector
For the wiring shown in above figure, be sure to use 0.75-1.25 mm
(two-core). (Three-core cables can be used only for the cool/heat selector.) (Insulated thickness : 1mm
or more)
The wires shown in above figure are field supply.
Caution 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: 1000m
Total wiring length: 2000m
Max branches No. of branches: 16
Up to 16 branches are possible for unit-to unit cabling. No branching is allowed after branching.
Never connect the power supply to unit-to-unit cabling terminal block. Otherwise the entire system may
break down.
7.6.7 Sequential Start
Make the outdoor unit cable connections shown below.
The outdoor unit PC board (A1P) is factory set at "Sequential start available".
160
A1P
A B C F1 F2 F1 F2
A B C
Take care of the polarity
F1 F2
Terminal board (Field supply)
F1 F2
F1 F2
Branch
A1P
A B C F1 F2 F1 F2 A B C F1
lndoor unit
: http://splitoff.ru/tehn-doc.html
SiE33-102
A B C F1 F2 F1 F2
TO IN/D UNIT TO OUT/D UNIT
C/H SELECTOR
TRANSMISSION WIRING
Outdoor unit P.C. board (A1P)
F1 F2 F1 F2
F1 F2 F1 F2
F1 F2 F1 F2
(V1860)
vinyl cords with sheath or cables
²
Subbranching
(V1861)
A1P
F2 F1 F2
lndoor unit
(V1862)
Installation Manual