Electrical Connection - Toshiba RBM-Y1121FUPE Installation Manual

Airtight test/Air purge, etc.
For airtight test, air purge, addition of refrigerant, and gas leak check, follow the Installation Manual attached to
the outdoor unit.
REQUIREMENT
Be sure to use the tool such as charge hose exclusive to R32 or R410A.
Do not turn on the power until the airtight test and the vacuuming have fi nished.
(If turning on the power, the incorporated PMV is closed fully and the period until the vacuuming fi nishes
elongates.)
Open fully valves of the outdoor unit
Gas leak check
Check with a leak detector or soap water whether gas leaks or not, from the pipe connecting section.
REQUIREMENT
Use a leak detector manufactured exclusively for HFC refrigerant (R32, R410A, R134a, etc.).
Heat insulating process
Perform heat insulating for each pipes separately.
In cooling time, temperature at both liquid and gas sides becomes
lower.
Therefore, perform heat insulating process suffi ciently to avoid
dewing.
• For heat insulator of pipe at gas side, be sure to use one with
heat-resisting temp. 120°C or more.
• Using the attached heat insulating pipe, perform heat insulating
process securely for pipe connecting part of the Flow Selector
units without clearance.
Flow Selector unit
The slit shall be
upper side.
Heat insulator
Heat insulating
pipe (Attached)
REQUIREMENT
Apply the heat insulation to the pipe connecting section of the Flow Selector unit securely up to the root without
exposure of the pipe. (The pipe exposed to the outside causes water leak.)
EN-19
• Indoor unit side
Heat insulating pipe
(Accessory)
Heat insulating pipe
(locally procured)
Binding band
(Accessory)
[Port with the pipe connected.]
• Outdoor unit side
Heat insulating pipe
(locally procured)
Binding band
(Accessory)
[Side with the pipe connected.]
10
5

ELECTRICAL CONNECTION

• If incorrect / incomplete wiring is carried out, it will cause an electrical fi re or smoke.
• Use the cord clamps attached to the product.
• Do not damage or scratch the conductive core and inner insulator of power and communication wires when
peeling them.
• Use the power cord and communication wire of specifi ed thickness, type, and protective devices required.
• Do not connect 220-240 V power to the terminal blocks (A, B) for communication wiring. (Otherwise, the system
will fail.)
• Perform the electric wiring so that it does not come to contact with the high-temperature part of the pipe.
The coating may melt resulting in an accident.
REQUIREMENT
• For power supply wiring, strictly conform to the Local Regulation in each country.
• After connecting wires to the terminal blocks, provide a trap and fi x wires with the cord clamp.
• Run the refrigerant piping line and communication wiring line in the same line.
• Do not turn on the power of the Flow Selector unit until vacuuming of the refrigerant pipes completes.
Power supply wire and communication wires specifi cations
Power supply wire and communication wires are locally procured.
For the power supply specifi cations, follow to the table below. If capacity is little, it is dangerous because overheat
or burnout may be caused. For system wiring diagram, follow the Installation Manual attached to the outdoor unit.
Power supply
• Power supply wire specifi cation: Cable 3-core 2.5 mm², in conformity with Design 60245 IEC 57.
Power supply
Power supply switch / circuit breaker or power supply wiring / fuse rating for Flow Selector units should be
selected by the accumulated total current values of the Flow Selector units.
Power supply wiring
Safety device
• This circuit must be protected with the required safety devices like a main switch, a slow blow fuse on each
phase and an earth leakage circuit breaker.
• When using residual current operated circuit breakers, be sure to use a high-speed type (0.1 second or less)
30 mA rated residual operating current.
RBM- MCA (A)
Y1121FUPE 0.4
Y1801FUPE 0.4
Y2801FUPE 0.4
MCA: Min. Circuit Amps
MOCP: Maximum Overcurrent Protection (Amps)
CAUTION
220-240 V ~, 50 Hz
220 V ~, 60 Hz
Below 50 m 2.5 mm²
MOCP (A)
15
EN-20