Trane Direct-Fired Indoor and Outdoor Make-Up Air Units manual Unit Operating Modes, MDT Controls

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Unit Operating Modes

There are three different modes that control the supply fan and unit operation:

•Off

•Manual

•Auto

There are also four different methods for controlling the operating modes:

•"a remote panel with two rotating knob adjustments (MDT and MRT controls)

•"a remote panel with one rotating knob and an intelligent room sensor (MRT- Pro controls)

•"an intelligent room sensor and local user interface panel with LCD display (MRT-

•any of the above controls with a internet-base WebCTRL interface.

MDT Controls:

MDT, modulating discharge temperature, is the most basic AdaptAire control for discharge temperature. The MDT 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 the 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 the Manual Mode, rotate the "temperature setpoint" knob on the remote control panel clockwise to the desired discharge air temperature setpoint. This will place the unit in the MANUAL mode and enable the burner. See Heating/Ventilating/Cooling Modes and Energy Saving Modes of this manual for more information.

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 MDT control does not support the time clock, night setback, or auxiliary unit enable functions.

MUA-SVP01A-EN • Direct-Fired Indoor and Outdoor Units

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Contents January Controls Programming GuideOverview Networking Direct-Fired Indoor and Outdoor Units MUA-SVP01A-EN Contents Contents MDT Controls Unit Operating ModesMRT-Pro Controls MRT ControlsUnit Operating Modes MRT-Expert Controls Unit Operating Modes Heating/Ventilating/Cooling Operating Modes Heating ModeGeneral Burner Control Unit Operating Modes Ventilation Mode M P E R a T U R E S E Cooling ModeDamper Control Modes Manual ModeMixed Air Temperature Mode Building Pressure Mode Freezestat Functions100% Outside Air Minimum VentilationDirect Acting User Configured PID Control85ºF Direct acting Reverse ActingReverse acting Multiplexed Inputs Unit ResetsClock Set Critical Fault Codes DiagnosticsFault Code Low Discharge Temperature Diagnostics Direct-Fired Indoor and Outdoor Units MUA-SVP01A-EN Fault Code Safety Circuit Open SOLUTIONIf fan is running check prior alarm log Fault CODEBurner StatusFault Code Burner Hand Fault Code Flame Failure Diagnostics Non-Critical Fault CodesSolution If fan is running Fault Code Unit off/Fan onSolution If fan is not running SOLUTIONIf fan/motor is running Fault CODEUnit on/Fan offSolution If fan/motor is not running Fault Code Check Airflow Switches SOLUTIONIf clogged filter switch is closing Fault Code Clogged Filter SwitchSOLUTIONIf setpoints are misadjusted Fault CODEEnergy Save ModeSolution If OAT, RoomT or DAT are such that heat is required SOLUTIONIf setpoints are not misadjustedDiagnostics Solution If setpoints are misadjusted Fault CODEInsufficient OASOLUTIONIf heat is desired SOLUTIONIf less outside air is desired Diagnostics Menu Selection Tree for BACview Menu SelectionUnit Modes Hotkey SET Points Hotkey Menu SelectionStatus Menu Hotkey Alarm HotkeyResets Hotkey Alarm History 64 Most RecentSchedules Hotkey User Configurable Output HotkeyHelp Hotkey Clockset HotkeyFuel Select Hotkey Ohms Thermistor Output Curve Thermostat Output CurveAirflow station layout Airflow Station LayoutNetwork Communication Zone 583 Controller SpecificationsRnet MRT-Pro or Room Air sensor Zone 583 Controller SpecificationsNon-recirculating with evap Dfoa and Dfia model diagram Typical Wiring SchematicTypical Wiring Schematic Recirculating Dfoa and Dfia model diagrams Recirculating Dfoa and Dfia model diagram Typical Wiring Schematic Trane