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This manual describes the installation of the SPTB1 Separate
Power Terminal Block for Mitsubishi Electric M&P series air
conditioners. The SPTB1 will allow for a separate power supply to
the indoor unit rather than receiving power from the outdoor unit.
Please refer to SPTB1 product guide for proper application.
1. Safety Precautions
Before installing the unit, make sure you read all the "Safety
precautions".
The "Safety precautions" provide very important points
regarding safety. Make sure you follow them.
Symbols used in the text
Warning:
This symbol denotes what could lead to serious injury or
death if you misuse the SPTB1
Caution:
This symbol denotes what could lead to a personal injury or
property damage if SPTB1 is misused
Warning:
•
Ask your technical representative to install the unit.
Any deficiency caused by your own installation may
result in electric shock or fire.
•
Ensure that installation work is done correctly following
this instruction manual. Any deficiency caused by
installation may result in electric shock or fire.
Firmly connect the wiring using the specified cables.
•
Carefully check that the cables do not exert any forces
on the terminals. Improper wiring connections may
produce heat and possibly fire.
Never modify or repair the SPTB1. Any deficiency
•
caused by your modification or repair may result in
electric shock or fire. Consult with your technical
representative about repair.
All electrical work must be performed by a licensed
•
technician, according to the local regulations and the
instructions given in this manual. Any lack of electric
circuit or any deficiency caused by installation may
result in electric shock or fire.
•
Stop the operation if any malfunction occurs. If
malfunction occurs (burning smell, etc.) stop the
operation and turn off the power supply. Contact your
technical representative. If the controller continues
to operate after a malfunction occurs, this may cause
damage, electric shock or fire.
•
Do not turn on the main power until installation has
been completed. Doing so may result in electric shock
or fire.
•
Keep the area around the unit clean to keep the indoor
unit from accumulating dust on the components. Dust
particles that enter the indoor unit may cause fire.
Do not move and re-install the SPTB1 yourself. Any
•
deficiency caused by the installation may result in
electric shock or fire. Ask your distributor or special
technical representative for moving and installation.
© 2015 Mitsubishi Electric US, Inc.
Note:
The installer will still need to run S2 and S3 wires from the
outdoor unit to the indoor unit. See Wiring Schematic section of this
installation manual.
Caution:
Do not power the electric heat package from the outdoor unit.
Caution:
•
Do not install in any place exposed to flammable gas
leakage. Flammable gases that accumulate around the
SPTB1 may cause an explosion.
Do not use in any special environment. Using in any
•
place exposed to oil (including machining oil), steam
and sulfuric gas may deteriorate the performance
significantly or give damage to the component parts.
•
Do not install in any place at a temperature of more
o
than 104
F or less than 32
sunlight.
•
Do not install in any place where acidic or alkaline
solution or special spays are often used. Doing so may
cause an electric shock or malfunction.
•
Wire so that it does not receive any tension. Tension
may cause wire breakage, heating or fire.
•
Do not install in an environment where moisture is
condensed into water. Doing so may cause electric
shock or malfunction.
•
Do not wash with water. Doing so may cause electric
shock or malfunction.
Specifications are subject to change without notice.
o
F or exposed to direct
3
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