Accessories; Pipe Requirement; Power Source; Electric Requirement - Rheem RHMV4821SNACJA Manual De Instalación

Thicknesses of Annealed Copper Pipes
Nominal diameter (in) Outer diameter (mm)
1/4
3/8
1/2
5/8
3/4

2.2. Accessories

For installation purposes, be sure to use the parts supplied by the manufacturer or
other prescribed parts. The use of non-prescribed parts can cause serious accidents
such as the unit falling, water leakage, electric shock, or fi re.
• The following installation parts are supplied. Use them as required.
• Keep the Installation Manual in a safe place and do not discard any other accessories
until the installation work has been completed.
Name and Shape
Installation manual
(This manual)
Drain cap
One set of following parts are necessary installation of this product.
Additional materials
Connection pipe assembly Decorative tape
Connection cable Vinyl tape
Wall pipe Wall cap

2.3. Pipe requirement

2.3.1. Protection of pipes
• Protect the pipes to prevent the entry of moisture and dust.
• Especially, pay attention when passing the pipes through a hole or connecting the end
of a pipe to the outdoor unit.
Location Working period
1 month or more
Outdoor
Less than 1 month
Indoor -
2.3.2. Refrigerant pipe size and allowable piping length
• Keep the piping length between the indoor unit and outdoor unit within the allowable
tolerance.
• The maximum lengths of this product are shown in the table. If the units are further
apart than this, correct operation cannot be guaranteed.
Model (abbreviation)
Pipe diameter <Liquid/Gas> [in (mm)]
Max. piping length (L) [ft (m)]
Max. height difference (H)
<Indoor unit to outdoor unit> [ft (m)]
View (Example)
9374995677-02_IM.indb 3 9374995677-02_IM.indb 3
Thickness [in(mm)]
6.35
9.52 0.032 (0.80)
12.70
15.88 0.039 (1.00)
19.05 0.047 (1.20)
WARNING
Q'ty Name and Shape
Drain pipe
1
7
Saddle Tapping screws
Drain hose Sealant
M10 bold, nut
Protection method
Pinch pipes
Pinch or tape pipes
Pinch or tape pipes
CAUTION
1736 model 1748 model
3/8 (9.52) / 5/8 (15.88)
229 (70)
98 (30)
L H

2.4. Power source

• Always use a special branch circuit and install a special receptacle to supply power
to the room air conditioner.
• Use a circuit breaker and receptacle matched to the capacity of the air conditioner.
• Do not extend the power cord.
• Perform wiring work in accordance with standards so that the air conditioner can be
operated safely and positively.
• Install a leakage circuit breaker in accordance with the related laws and regulations
and electric company standards.
• The circuit breaker is installed in the permanent wiring. Always use a circuit that can
trip all the poles of the wiring and has an isolation distance of at least 3 mm between
the contacts of each pole.
• The power source capacity must be the sum of the air conditioner current and
the current of other electrical appliances. When the current contracted capacity is
insuffi cient, change the contracted capacity.
• When the voltage is low and the air conditioner is diffi cult to start, contact the power
company the voltage raised.
Q'ty

2.5. Electric requirement

1
• Be sure to install a breaker of the specifi ed capacity.
• Regulation of cables and breaker differs from each locality, refer in accordance with
local rules.
Voltage rating
Operating range
Cable
Power supply cable
*1) Select the correct cable type and size according to the country or region's regulations.
Max. wire length: Set a length so that the voltage drop is less than 2%. Increase the
wire diameter when the wire length is long.
Model (abbreviation)
1736, 1748
MCA: Minimum Circuit Ampacity
MAX. CKT. BKR.: Maximum Circuit Breaker
GFEB: Ground Fault Equipment Breaker
• Before starting work check that power is not being supplied to all poles of the indoor
unit and outdoor unit.
• Install all electrical works in accordance to the national standard.
• Install the disconnect device with a contact gap of at least 3 mm in all poles nearby the
units. (Both indoor unit and outdoor unit)
• Install the circuit breaker nearby the units.

2.6. Additional charge

When adding refrigerant, add the refrigerant from the charging port at the completion
of work.
Refrigerant suitable for a piping length of 98 ft (30 m) is charged in the outdoor unit at the
factory.
When the piping is longer than 98 ft (30 m), additional charging is necessary.
For the additional amount, refer to the following table.
Pipe length
Additional refrigerant
WARNING
CAUTION
CAUTION
1 ø 208/230 V (60 Hz)
187-253 V
*1)
Size Remarks
2 cable + Earth (Ground),
8AWG
1 ø 208/230 V
MCA MAX. CKT. BKR.
39.9 A 40 A
CAUTION
98 ft 131 ft 164 ft 197 ft
(30 m) (40 m) (50 m) (60 m)
+14 oz +28 oz +42 oz
None
(+400 g) (+800 g) (+1200 g) (+1600 g)
GFEB
30 mA
0.1 s or less
229 ft
Rate
(70 m)
+56 oz 0.4 oz/ft
(40 g/m)
En-3
12/9/2020 3:41:47 PM 12/9/2020 3:41:47 PM