Idiomas disponibles
Idiomas disponibles
* In case of flaring for R410A with the conventional
flare tool, pull it out approx. 0.02
than that for R22 to adjust to the specified flare
size. The copper pipe gauge is useful for adjusting
pressure so when the fl
will no "whooshing" sound:
indicative of trouble.
Use two wrenches to connect the indoor unit pipe.
Work using double spanner
Use the tightening torque levels as listed in the
following table.
Outer dia. of connecting
Tightening torque
pipe (inch (mm))
(ft.lbs (N m))
10.3 to 13.3 (14 to 18)
25.1 to 31.0 (34 to 42)
36.1 to 45.0 (49 to 61)
46.5 to 56.8 (63 to 77)
Tightening torque of flare pipe connections.
Pressure of R410A is higher than that of R22.
Therefore, using a torque
wrench, tighten the flare pipe connecting sections
which connect the indoor and outdoor units of the
specified tightening torque.
CAUTION
T
nut depending on installation conditions.
Piping with outdoor unit
Shape of valve differs according to the outdoor unit.
Manual of the outdoor unit.
25-EN
Airtight test / Air purge, etc.
and gas leak check, refer to the Installation Manual
attached to the outdoor unit.
REQUIREMENT
Open the valve fully
.
the outdoor unit.
Insulation process
and gas side.
insulation to the pipe connecting section of the
REQUIREMENT
exposure of the pipe. (The pipe exposed to the
outside causes water leak.)
Wrap insulation with its slits facing up (ceiling side).
Wrap the pipe with the attached insulation
Indoor unit
(ceiling side).
Insulation
of the pipe
Insulation pipe
Banding band
Union
– 13 –
7
Electrical connection
WARNING
Use the specified wires for wiring connection to the terminals. Securely fix them to prevent external
forces applied to the terminals from affecting the terminals.
Incomplete connection or fixation may cause a fire or other trouble.
Connect grounding wire. (grounding work)
Incomplete grounding cause an electric shock.
Do not connect grounding wires to gas pipes, water pipes, lightning conductor or telephone grounding wires.
Appliance shall be installed in accordance with national wiring regulations.
Capacity shortage of power circuit or incomplete installation may cause an electric shock or a fire.
CAUTION
The wire size and wire length of the communication line differs depending on the outdoor unit series
to be connected.
Consult local building codes, NEC (National Electrical Code) or CEC (Canadian Electrical Code) for special
requirements.
If incorrect / incomplete wiring is carried out, it will cause an electrical fire or smoke.
Install an earth leakage breaker that is not tripped by shock waves.
If an earth leakage breaker is not installed, an electric shock may be caused.
Use the cord clamps attached to the product.
Do not damage or scratch the conductive core and inner insulator of power and control wires when peeling
them.
Use the power supply wire and control wires of specified thickness, type, and protective devices required.
Do not connect 208/230V power to the terminal blocks (Uv (U1)), (Uv (U2)), (A), (B) for control 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.
Do not turn on the circuit breaker of the indoor unit until vacuuming of the refrigerant pipes completes.
REQUIREMENT
For power supply wiring, strictly conform to the Local Regulation in each country.
For wiring of power supply of the outdoor units, follow the Installation Manual of each outdoor unit.
After connecting wires to the terminal blocks, provide a trap and fix wires with the cord clamp.
Run the refrigerant piping line and communication line in the same line.
Do not turn on the power of the indoor unit until vacuuming of the refrigerant pipes completes.
26-EN
