Mr. Slim MXZ Series Guide Specification ©July 2011 Mitsubishi Electric / HVAC 8/51
6. An optional drain pan level switch (DPLS1), designed to connect to the control board,
shall be provided if required, and installed on the condensate pan to prevent condensate
from overflowing.
F. Electrical:
1. The indoor unit electrical power shall be 208 / 230 volts, 1-phase, 60 hertz.
2. The system shall be equipped with A-Control – a system allowing each indoor unit to be
powered and controlled directly from the outdoor unit using a 14 gauge (AWG) 3-wire
connection plus ground providing both primary power and integrated, by-directional,
digital control signal without additional connections.
3. The indoor units shall not have any supplemental or “back-up” electrical heating
elements.
G. Control:
1. The unit shall have a wireless hand held controller to perform input functions necessary
to operate the system.
2. The wireless hand held controller shall have a Power On/Off switch, Mode Selector –
Cool, Dry, Heat, Auto Modes - Temperature Setting, Timer Control, Fan Speed Select
and Auto Vane selector.
3. The indoor unit shall perform Self-diagnostic Function and Check Mode switching.
4. Temperature changes shall be by 1ºF increments with a range of 61 - 88ºF.
5. The microprocessor located in the indoor unit shall have the capability of sensing return
air temperature and indoor coil temperature, receiving and processing commands from
the wireless or a wired controller, providing emergency operation and controlling the
outdoor unit.
6. The system shall be capable of automatically restarting and operating at the previously
selected conditions when the power is restored after power interruption.
7. Control system shall control the continued operation of the air sweep louvers, as well as
provide On/Off, System/Mode function.
8. The indoor unit shall have the option of either a wireless or wired wall mounted remote
controller to be ordered separately:
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:
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