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8 Direct-Fired Indoor and Outdoor Units • MUA-SVP01A-EN
Unit Operating Modes
MRT Controls:
MRT, modulating room temperature, is the most basic AdaptAire control for
room temperature. The MRT control system includes a remote control panel
equipped with 1 or 2 potentiometers, 3 or more pilot lights, and up to 2 switches.
UNIT OFF MODE
Off Mode is the default unit operational mode. To place the unit in Off Mode
rotate the "temperature setpoint" knob on the remote control panel
counterclockwise to the stop. This will place the unit in the OFF mode and
extinguish the "unit enable" light. The OFF mode prevents the unit from starting.
UNIT MANUAL MODE
Manual Mode allows the unit to turn on To place the unit in Manual Mode rotate
the "temperature setpoint" knob on the remote control panel clockwise to the
desired room temperature setpoint. This will place the unit in the MANUAL
mode. The burner will be enabled if the room air temperature is 2° below the
room temperature setpoint and will be deactivated when the room air
temperature is above the room temperature setpoint. The cooling output will be
enabled if the room air temperature is 2° above the room temperature setpoint
and will be deactivated when the room air temperature is below the room
temperature setpoint.
UNIT AUTO MODE
Auto Mode has four different functions that control the unit operation. They are a
time clock, heating and cooling night setbacks, and a signal from an external
source.
The MRT control does not support the time clock, night setback, or auxiliary unit
enable functions.
MRT-Pro Controls:
The AdaptAire MRT-Pro, modulating room temperature control, provides some
limited information regarding unit operation on an LCD display and allows the
user to adjust a few basic operational parameters. The MRT-Pro must be placed
in the MANUAL or AUTO mode in the controller program using a BACview or PC
in order for it to operate. The Off, Manual, and Auto modes will then function as
described in the following sections.
UNIT OFF MODE
Off Mode is the default unit operational mode. The OFF mode prevents the unit
from starting and overrides the Time Clock and Night Setback functions. A
BACview or PC is required to change from this mode. See the section related to
the MRT Expert for instructions on how to use the BACview for programming.