Electrical Wiring; The Precautions Of Electrical Wiring - Rheem Classic Plus Série Manuel D'installation

(1) Detach the caps and plugs from the pipes.
(2) Center the pipe against the port on the outdoor unit, and then turn the fl are nut by
hand.
To prevent gas leakage, coat the fl are
surface with alkylbenzene oil (HAB).
Do not use mineral oil.
(3) Attach the connection pipe.
2-way valve
(Liquid)
3-way valve (Gas)
With this model, the Holding wrench
can only be inserted horizontally.
Body side
Holding
wrench
Torque wrench
(4) When the fl are nut is tightened properly by your hand, use a torque wrench to
fi nally tighten it.
Hold the torque wrench at its grip, keeping it in a right angle with the pipe, in order to
tighten the fl are nut correctly.
• Outer panel may be distorted if fastened only with a wrench. Be sure to fi x the
elementary part with a holding wrench (spanner) and fasten with a torque wrench
(refer to below diagram). Do not apply force to the blank cap of the valve or hang a
wrench, etc., on the cap. If blank cap is broken, it may cause leakage of refrigerant.
Flare nut [in. (mm)]
1/4 (6.35) dia.
3/8 (9.52) dia.
1/2 (12.70) dia.
5/8 (15.88) dia.
3/4 (19.05) dia.
4. 1. 4. How to use adapter (connection ports of outdoor unit)
• When using the ADAPTER, be careful not to overtighten the nut, or the smaller pipe
may be damaged.
• Apply a coat of refrigeration oil to the threaded connection port of the outdoor unit
where the fl are nut comes in.
• Use appropriate wrenches to avoid damaging the connection thread by
overtightening the fl are nut.
• Apply wrenches on both of fl are nut (local part), and ADAPTER to tighten them.
Adapter tightening torque
Adapter type [in. (mm)]
ø1/2 (ø12.70) → ø3/8 (ø9.52)
Flare nut
Connection pipe
(Liquid)
Flare nut
Connection pipe
(Gas)
Connection pipe
CAUTION
Tightening torque [lbf·ft (N·m)]
11.8 to 13.3 (16 to 18)
23.6 to 31.0 (32 to 42)
36.1 to 45.0 (49 to 61)
46.5 to 55.3 (63 to 75)
66.4 to 81.1 (90 to 110)
Tightening torque [lbf·ft (N·m)]
36.1 to 45.0 (49 to 61)

5. ELECTRICAL WIRING

5. 1. The precautions of electrical wiring

WARNING
Wiring connections must be performed by a qualifi ed person in accordance with speci-
fi cations.
The rated supply of this product is 60Hz, 208/230V. Use a voltage within the range of
187-253V.
Before connecting the wires, make sure the power supply is OFF.
When installing this system in high humidity locations, install using ground fault equip-
ment breakers (often referred to in other countries as an ELCB earth leakage current
breaker) to reduce the risk of leaking current which may result in electric shock or
potential fi re.
Be sure to install a breaker of the specifi ed capacity.
When selecting breaker, please comply with the laws and the regulations of each
country.
One breaker must be installed on the power supply of the outdoor unit.
Wrong selection and setup of the breaker will cause electric shock or fi re.
Do not connect AC power supply to the transmission line terminal board.
Improper wiring can damage the entire system.
Connect the connector cord securely to the terminal.
Faulty installation can cause a fi re.
Make sure to secure the insulation portion of the connector cable with the cord clamp.
A damaged insulation can cause a short circuit.
Never install a power factor improvement condenser. Instead of improving the power
factor, the condenser may overheat.
Before servicing the unit, turn the power supply switch OFF. Then, do not touch elec-
tric parts for 10 minutes due to the risk of electric shock.
Make sure to perform grounding work. Improper grounding work can cause electric
shocks.
CAUTION
The primary power supply capacity is for the air conditioner itself, and does not include
the concurrent use of other devices.
Do not use crossover power supply wiring for the outdoor unit.
If the electrical power is inadequate, contact your electric power company.
Install a breaker in a location that is not exposed to high temperatures.
If the temperature surrounding the breaker is too high, the amperage at which the
breaker cuts out may decrease.
We suggest installing GFEB breakers or follow local electrical code.
This system uses an inverter, which means that when used with a ground fault breaker
you must use breakers that can handle harmonics such as a (GFEB) Ground Fault
Equipment Breaker (30 mA or greater) in order to prevent malfunctioning of ground
fault device.
When the electrical switchboard is installed outdoors, place it under lock and key so
that it is not easily accessible.
Do not fasten the power supply cable and connection cable together.
Always keep to the maximum length of the connection cable. Exceeding the maximum
length may lead to erroneous operation.
The static electricity that is charged to the human body can damage the control PC
Board when handling the control PC Board for address setting, etc.
Please keep caution to the following points.
Provide the grounding of Indoor unit, Outdoor unit and Option equipment.
Cut off the power supply (breaker).
Touch the metal section (such as the unpainted control box section) of the indoor or
outdoor unit for more than 10 seconds. Discharge the static electricity in your body.
Never touch the component terminal or pattern on the PC Board.
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