Daikin FDYB-KA Series Engineering Data page 65

Installation
〈 REFRIGERANT PIPING 〉
Model
Max. allowable length
Max allowable height
Additional refrigerant
required for refrigerant
pipe exceeding 10m
in length. (NOTE 1)
Gas pipe
Liquid pipe
〈 AIR PURGE 〉
• Leak test
1. Evaluate the pipes and check vacuum. (No pressure increase for 1 minute)
2. Charge Nitrogen (N )
2
3. Check for leaks by applying soap water to pipe connections.
4. Discharge Nitrogen.
5. Conduct air purge again and check vacuum.
6. Open valves and charge refrigerant into the connection pipe and into the indoor unit.
7. Leak test must follow the standard pr. EN378-7.
〈 ELECTRIC WIRING WORK 〉
• All field supplied parts and materials and electric works must conform to local codes.
• All wiring must be performed by an authorized electrician.
• Use copper wires only.
• For electric wiring work, refer also to the "WIRING DIAGRAM" attached to the outdoor unit.
• A circuit breaker capable of shutting down power supply to the entire system must be installed.
Model
Series Type
RY35 V1
V1
RY50
VAL
V1
RY60
VAL
∗ Only in protected pipes, for outdoor installation use type H07RN · F.
1
2
3
Indoor unit
64
Heat pump
RY35 RY50
20 m
15 m
20g/m 30g/m
φ12.7 × t 0.8
φ6.4 × t 0.8
Power supply
Field fuse
15
20
20
20
25
• The outdoor unit has the Fuse (5A)
for the interconnection cable.
Select the interconnection cable size
with the Fuse (5A).
RY60
30 m
60g/m
φ15.9 × t 1.0
Gauge manifold
Low
side
Vacuum
pump
Cable type (∗)
H05VV–U3G
H05VV–U3G
H05VV–U3G
V1, VAL, TYPE Power supply
L N
1 2 3 L N
Outdoor unit
NOTE: 1) If RY60 type is connected, extra refrigerant
is needed if 5m is exceeded.
2) For pipe connection refer to
"REFRIGERANT PIPING WORK".
Outdoor unit
High
side
Stop valve for liquid
Stop valve for gas
Service port
Interconnection cable
type (∗)
H05VV–U4G
Wiring size must comply
H05VV–U4G
with the applicable local
and national code.
H05VV–U4G
ED41-016B
Size
C : 3PN00281-18T-13
FDYB-KA Series