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Toshiba
–4–
Outdoor Unit
Installation Manual
EN
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
Figure of Single
Refrigerant sizes
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.
Refrigerant charge
* 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.
Allowable
pipe length
(ft (m))
Height difference
(Indoor-outdoor H)
(ft (m))
Number of
bent portions
Total length
L
Indoor unit:
Upper
Outdoor unit:
Lower
10 or less
164’1” (50) 98’5” (30) 98’5” (30)
Liquid side Gas side
Outer
diameter
Thickness
Outer
diameter
Thickness
Ø1/4”
(6.4 mm)
0.03”
(0.8 mm)
Ø1/2”
(12.7 mm)
0.03”
(0.8 mm)
H
L
Indoor Unit
Outdoor Unit
Length of refrigerant
pipe connected to
indoor/outdoor unit
Additional refrigerant
16’5” - 65’7”
(5 - 20 m)
None
*65’7” - 164’1”
(20 - 50 m)
Add 0.22 oz/ft (20 g/m) of
refrigerant for piping that exceeds
65’7” (20 m) up to 164’1” (50 m).
Model RAV- SP180
Power supply 208/230 V~, 60 Hz
MCA 17 A
MOCP (MAX Fuse/CB) 30 A
Breaker 20 A
Power wire
Maximum 65’7” (20 m)
2 x AWG12
Ground : AWG14
System
interconnection wires
4 x AWG12
MCA = Minimum Circuit Amps
MOCP =Maximum Over Protection Device Amps.
4-EN
+00EH99865301_00Ta.book Page 4 Wednesday, November 25, 2009 11:05 AM