System Requirements - Toshiba CARRIER RAV-SP300AT2-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
246'1" (75) 98'5" (30)
Figure of Single
Indoor Unit
Outdoor Unit
Refrigerant sizes
Liquid side
Outer
Thickness
diameter
Ø3/8" 0.03"
(9.5 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
0.04"
Ø5/8"
(15.9 mm)
(1.0 mm)
Refrigerant charge
Length of refrigerant
pipe connected to
indoor/outdoor unit
9'10" - 98'5"
(3 - 30 m)
*98'5" - 246'1"
(30 - 75 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.
• System interconnection wire size must be AWG12.
• Breaker must have a capacity specified in the
following table.
• All wiring must comply with local electric codes and
NEC (National Electric Code) or CEC (Canadian
Electric Code).
Model RAV-
Power supply
MCA
MOCP (MAX Fuse/CB)
Breaker
System interconnection wires
MCA = Minimum Circuit Amps
MOCP =Maximum Over Protection Device Amps.
– 4 –
Installation Manual
Additional refrigerant
None
Add 0.43 oz/ft (40 g/m) of
refrigerant for piping that exceeds
98'5" (30 m) up to 246'1" (75 m).
SP420
208/230 V, 60 Hz
24 A
40 A
25 A
AWG12
EN
4-EN