Mr. Slim MXZ Series Guide Specification ©July 2011 Mitsubishi Electric / HVAC 47/51
1. The indoor unit electrical power shall be 208 / 230 volts, 1-phase, 60 hertz.
2. The system shall be capable of satisfactory operation within voltage limits of 198 volts
to 253 volts.
3. The power to the indoor unit shall be supplied from the outdoor unit, using Mitsubishi
Electric A-Control system.
G. Control:
1. The control system shall consist of a minimum of one microprocessor on each indoor
unit and one on the outdoor unit, interconnected by single non-polar two-wire cables.
The microprocessor located in the indoor unit shall have the capability of monitoring
return air temperature and indoor coil temperature, receiving and processing commands
from the wired controller, providing emergency operation and controlling the outdoor
unit. The control signal between the indoor and outdoor unit shall be pulse signal 24
volts DC.
2. For A-Control, a three (3) conductor 14 ga. AWG wire with ground shall provide power
feed and bi-directional control transmission between the outdoor and indoor units. . If
code requires a disconnect mounted near the indoor unit, a TAZ-MS303 3-Pole
Disconnect shall be used – all three conductors must be interrupted.
3. The system shall be capable of automatic restart when power is restored after power
interruption. The system shall have self-diagnostics ability, including total hours of
compressor run time. Diagnostics codes for indoor and outdoor units shall be displayed
on the wired controller panel.
4. Remote Controllers
All remote controllers need to be ordered separately from the unit.
a. Wireless, wall mounted remote controller kit (MHK1)
The Wireless, wall mounted remote controller kit (MHK1) shall consist of a wireless,
wall mounted controller (MRCH1), a wireless receiver (MIFH1) and a cable
(MRC1) to connect the receiver to the indoor unit. The controller shall be white in
color with a light-green LCD display and a backlight feature. The MRCH1 shall
consist of four Function buttons below the display, and Increase/Decrease Set
Temperature buttons and a Hold button to the right of the display. The controller
shall have a built-in temperature sensor and a battery holder, using two AA alkaline
batteries. Temperature shall be displayed in either Fahrenheit (°F) or Celsius (°C),
and temperature changes shall be by increments of 1°F (0.5°C).
The MHK1 uses Honeywell RedLINK
TM
technology, and the wireless receiver is
specially designed for Mitsubishi units. Linking to the wireless network shall be
done from the receiver and from the remote controller. There shall not be any
interference with other wireless devices or neighboring RedLINK
TM
products.
Communication shall be automatically restored after power resumes and after
batteries are replaced.
The basic functions are:
Wireless, Wall Mounted Remote Controller Kit (MHK1)
Item Description
Number of Units Controllable 1 unit
ON/OFF Run and stop operation
(32 pages)
(24 pages)
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