System Requirements - Toshiba CARRIER RAV-SP180AT2-UL Installation Manual

Outdoor Unit
3

SYSTEM REQUIREMENTS

Piping (Field supplied)
• Minimum refrigerant line length between the outdoor
unit and indoor unit is 16.5" (5 m)
• Maximum pipe lengths
Allowable Height difference
pipe length (Indoor-outdoor H)
(ft (m)) (ft (m))
Total length Indoor unit:
L Upper
164'1" (50) 98'5" (30)
Figure of Single
Indoor Unit
Outdoor Unit
Refrigerant sizes
Liquid side
Outer
Thickness
diameter
Ø1/4" 0.03"
(6.4 mm) (0.8 mm)
Flare nuts and flaring
• The flare nuts and flaring are different from those for
the conventional refrigerant.
Use the flare nuts supplied with the air conditioner or
those for R410A.
• Before performing flaring, carefully read
"REFRIGERANT PIPING"
Insulation
Both lines need to be insulated. Use a minimum 0.4"
(10 mm) wall thickness.
Number of
bent portions
Outdoor unit:
Lower
10 or less
98'5" (30)
Gas side
Outer
Thickness
diameter
0.03"
Ø1/2"
(12.7 mm)
(0.8 mm)
Refrigerant charge
Length of refrigerant
pipe connected to
indoor/outdoor unit
16'5" - 65'7"
(5 - 20 m)
*65'7" - 164'1"
(20 - 50 m)
* Caution during addition of refrigerant
Max. amount of additional refrigerant is 1.8 lbs (800
g).
Charge the refrigerant accurately. Overcharging
may cause serious trouble with the compressor.
* Minimum refrigerant pipe is 16'5"(5 m).
This may cause a malfunction of the compressor or
other devices.
Metering Device is an electronic EXV (PMV) in
outdoor unit.
Connecting power and control
cables (Field supplied)
• The main power is supplied to the outdoor unit. The
field supplied connecting cables from the outdoor
unit to the indoor unit consist for 4 wires and provides
the power for the indoor unit as well as the
communication signal between the outdoor 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.
Model RAV-
Power supply
MCA
MOCP (MAX Fuse/CB)
Breaker
Power wire
System
interconnection wires
MCA = Minimum Circuit Amps
MOCP =Maximum Over Protection Device Amps.
– 4 –
Installation Manual
Additional refrigerant
None
Add 0.22 oz/ft (20 g/m) of
refrigerant for piping that exceeds
65'7" (20 m) up to 164'1" (50 m).
SP180
208/230 V~, 60 Hz
17 A
30 A
20 A
Maximum 65'7" (20 m)
2 x AWG12
Ground : AWG14
4 x AWG12
EN
4-EN