Electrical Connection - Toshiba MMW-AP0271LQ-E Installation Manual

• Use the tightening torque levels as listed in the table
below.
Outer dia. of connecting
Tightening torque (N•m)
pipe (mm)
6.4 14 to 18 (1.4 to 1.8 kgf•m)
9.5 33 to 42 (3.3 to 4.2 kgf•m)
12.7 50 to 62 (5.0 to 6.2 kgf•m)
15.9 63 to 77 (6.3 to 7.7 kgf•m)
• Tightening torque of flare pipe connections.
Pressure of R410A is higher than that of R22.
(Approx. 1.6 times) Therefore, using a torque
wrench, tighten the flare pipe connecting sections
which connect the indoor and outdoor units of the
specified tightening torque.
Incorrect connections may cause not only a gas leak,
but also a trouble of the refrigeration cycle.
CAUTION
Tightening with an excessive
torque may crack the nut
depending on installation
conditions.
 Airtight test / air purge, etc.
For air tightness test, adding refrigerant, refer to the
Installation Manual attached to the outdoor unit.
CAUTION
Do not supply power to the indoor
unit and the hot water module
until the airtight test and
vacuuming are completed. (If the
indoor unit or the hot water
module is powered on, the pulse
motor valve is fully closed, which
extends the time for vacuuming.)
 Open the valve fully
Open the valve of the outdoor unit fully.
37-EN
 Heat insulation process
Apply heat insulation for the pipes separately at liquid
side and gas side.
• For the heat insulation to the pipes at gas side, use
the material with heat-resisting temperature 120 °C
or higher.
• To use the attached heat insulation pipe, apply the
heat insulation to the pipe connecting section of the
hot water module securely without gap.
REQUIREMENT
• Apply the heat insulation to the pipe connecting
section of the hot water module securely up to the
root without exposure of the pipe. (The pipe exposed
to the outside causes water leak.)
• Wrap heat insulator with its slits facing up (ceiling
side).
Hot water module
Flare nut
Union
Heat insulator of
the pipe
Heat insulation pipe Banding band
(Accessory) (locally procured)
 Installation of remote
controller (Sold separately)
For installation of the wired remote controller, follow the
Installation Manual attached with the remote controller.
• Pull out the remote controller cord together with the
refrigerant pipe or drain pipe.
Pass the remote controller cord through upper side
of the refrigerant pipe and drain pipe.
• Do not leave the remote controller at a place
exposed to the direct sunlight and near a stove.
– 19 –
9

Electrical connection

WARNING
• Use the specified wires for
wiring connect 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 earth wire.
(grounding work)
Incomplete grounding cause an
electric shock.
Do not connect earth wires to
gas pipes, water pipes, lightning
conductor or telephone earth
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
• 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 inter-
connecting wires when peeling
them.
• Use the power cord and Inter-
connecting wire of specified
thickness, type, and protective
devices required.
• Do not connect 220 V – 240 V
power to the terminal blocks ( ,
U
, , ) for control wiring and
A B
U
2
the terminal blocks (COM, S1,
S2, S3, S4, S5) for output
function. (Otherwise, the
system will fail.)
• Do not damage or scratch the
conductive core and inner
insulator of power and inter-
connecting wires when peeling
them.
• 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.
1
38-EN