System Requirements - Toshiba Carrier RAS-12EKCV-UL Service Manual

10-6. SYSTEM REQUIREMENTS

10-6-1. Piping (Field supplied)
Minimum refrigerant line length between the outdoor
•
unit and indoor unit is
6.6ft. (2m).
Maximum pipe lengths
•
Allowable Pipe length T
(ft (m))
66 (20)
Fig. 10-6-1
Refrigerant pipe sizes
Liquid side
Outer Thickness
Diameter
In. (mm) In. (mm)
Ø1/4 (6.35) 0.03 (0.8)
Insulation
Both lines need to be insulated. Use a minimum
5/16 in (8mm) wall thickness.
Height difference
(Indoor − Outdoor H)
(ft (m))
33 (10)
T H
Gas side
Thickness
Outer diameter
In. (mm) In. (mm)
Ø3/8 (9.52) 0.03 (0.8)
Refrigerant charge
Refrigerant charge
Length of refrigerant Pipe
connected to Indoor/
outdoor unit
6.6-50
(2-15m)
50-66
(15-20m)
* Caution during addition of refrigerant Max. amount of
additional refrigerant is 0.22 lbs (100g).
Charge the refrigerant accurately. Overcharging may
cause serious trouble to the compressor.
* Minimum refrigerant pipe is 6.6ft (2m).
Using pipe shorter than that may cause a malfunction of
the compressor or other components.
10-6-2. Power supply Connection and Connecting
Cable
The power supply shall be connected to the outdoor unit
•
by 3 wires.
The connecting cable between the indoor unit and outdoor
•
unit is 4 wires.
This cable provides the power for the indoor unit and the
communication signal between the outdoor unit and indoor
unit.
Consult local building codes, NEC (National Electrical Code)
•
or CEC (Canadian Electrical Code) for special requirements.
The following are the electrical requirements.
•
Product
Model
Item
MCA
MOCP (MAX Fuse/CB)
Breaker
Connect to
FCU/CDU
Power supply cord
No. of Core
(Not provide)
Size
Interconnecting
No. of Core
cable between
FCU & CDU
Size
(Not provide)
MCA = Minimum Circuit Amps
MOCP = Maximum Over Protection Device Amps
– 63 –
FILE NO. SVM-13071
Unit : ft (m)
Additional refrigerant
None
Add 0.22oz/ft (20g/m) of
Refrigerant for piping that exceeds
50ft (15m) up to 66ft (20m)
FCU RAS-09EKCV-UL RAS-12EKCV-UL
CDU RAS-09EACV-UL RAS-12EACV-UL
10
15
15A
CDU
3 (L1, L2,
AWG14
4 (L1, L2, S, )
AWG14
13
20
)