Outdoor Unit | Installation Manual |
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 | Number of | ||
pipe length | ||||
bent portions | ||||
(ft (m)) | (ft (m)) | |||
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Total length | Indoor unit: | Outdoor unit: |
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L | Upper | Lower | 10 or less | |
246’1” (75) | 98’5” (30) | 98’5” (30) |
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Figure of Single
Indoor Unit
Outdoor Unit
H
L
Refrigerant sizes
Liquid side | Gas side | |||
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Outer | Thickness | Outer | Thickness | |
diameter | diameter | |||
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Ø3/8” | 0.03” | Ø5/8” | 0.04” | |
(9.5 mm) | (0.8 mm) | (15.9 mm) | (1.0 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.
Refrigerant charge
Length of refrigerant | Additional refrigerant | |
pipe connected to | ||
indoor/outdoor unit |
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9’10” - 98’5” | None | |
(3 - 30 m) | ||
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*98’5” - 246’1” | Add 0.43 oz/ft (40 g/m) of | |
refrigerant for piping that exceeds | ||
(30 - 75 m) | ||
98’5” (30 m) up to 246’1” (75 m). | ||
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*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- | SP420 |
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Power supply | 208/230 V, 60 Hz |
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MCA | 24 A |
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MOCP (MAX Fuse/CB) | 40 A |
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Breaker | 25 A |
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System interconnection wires | AWG12 |
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MCA = Minimum Circuit Amps
MOCP =Maximum Over Protection Device Amps.
EN
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