Contents Fx-Maxx Air Handler Control Micro Air Corporation 124 Route 526 Allentown. NJ 08501 INTRODUCTION ......................................................................................................................................... 1 BASIC OPERATION .................................................................................................................................... 2 DESCRIPTION OF OPERATION ..........................................................................................
Fx-Maxx Air Handler Control Operations Manual INTRODUCTION The Fx-Maxx Control is designed for use with Chilled Water Air Conditioning Systems. Fx-Maxx has a universal power supply that operates on 115, 230, 50 or 60 Hz AC power. Fx-Maxx Air Handler Control includes the following standard and optional features: Standard Features Paintable Face Plate Cover with recess for matching wall covering insert. User friendly 6 button display panel requires no manual for basic operation.
Fx-Maxx Air Handler Control Operations Manual BASIC OPERATION POWER BUTTON Press the power button once to toggle the unit to the on mode. Press the power button again to toggle the unit to the off mode. FAN BUTTON Press and release the fan button to advance from auto to manual fan. Press and release to increase the manual fan speeds, 1 through 6. Press and release again returns to the auto fan mode.
Fx-Maxx Air Handler Control Operations Manual OVERVIEW Fx-Maxx is a user friendly, easy to operate, programmable temperature control. Press the ON/OFF button once to engage the system. The display indicates room temperature when the system is on and the display is blank when the system is off. Press and release the Mode Button until the desired Mode LED is illuminated. Set the room temperature by pressing the up or down button.
Fx-Maxx Air Handler Control Operations Manual OPERATOR CONTROLS AND DISPLAY PANEL Refer to figure 1 for the buttons locations and display functions listed on the following pages. 1. POWER BUTTON The power button is used to toggle between the on and off modes. Press the power button once to toggle the unit to the on mode. Press the power button again to toggle to the off mode. 2. FAN SPEED BUTTON The fan speed button is used to switch between Auto and Manual Fan Speeds.
Fx-Maxx Air Handler Control Operations Manual 5. MODE BUTTON The mode button is used to select one of the four operating modes. Press and release the mode button and the Fx-Maxx Air Handler Control will advance to the next mode. Continue to press and release the Mode button until the desired operating mode is reached. The mode selected is indicated by the Mode LED, i.e., Cool, Heat, Automatic or Moisture Mode. 6.
Fx-Maxx Air Handler Control Operations Manual DUAL BUTTON FUNCTIONS Up & Down Buttons Simultaneously Press the Up and Down buttons, while in the On Mode, to view the chill water inlet temperature. Simultaneously Press the UP & Down Buttons while in the program mode to set new custom programming defaults. MODES OF OPERATION Off Mode When the Fx-Maxx Air Handler Control is in the off mode, all control outputs are turned off. Program parameters and user settings are saved in nonvolatile memory.
Fx-Maxx Air Handler Control Operations Manual Moisture Mode While in the on mode, press the Mode Button until the Moisture Mode LED is illuminated. The first cycle will start in 1 minute. Every 4 hours, the fan is started and air circulated for 30 minutes. During this time the air temperature is sampled and entered into memory. The cooling cycle is started and continues until the temperature is lowered 2 ° F. The system is allowed a maximum of one hour running time to reach the desired temperature.
Fx-Maxx Air Handler Control Operations Manual Warning Severe electrical disturbances can sometimes upset the Fx-Maxx operating sequences. Operator confusion related to program parameters can also cause, what seem to be, operational problems. Whenever there is any doubt as to the proper operation of the controller, Factory Default Parameters should be Re-initialized. ENTERING PROGRAM MODE The program mode can only be entered from the Off Mode.
Fx-Maxx Air Handler Control Operations Manual Programmable Parameters There are eighteen (18) programmable parameter locations with their Factory Default Settings listed in this section. The table below indicates what these parameters are, along with the permitted values and the original Factory Default Settings.
Fx-Maxx Air Handler Control Operations Manual Software Identification The software version of the control is identified for one (1) second prior to the exit from the program mode. The software identification number, i.e. ("A10") will appear in the display for one second, then the control will return to the off mode. Should there be any reason to contact Micro Air Corporation about the system or programming the Fx-Maxx Air Handler Control be sure to have the software identification number available.
Fx-Maxx Air Handler Control Operations Manual P-9 Display Brightness Control The display brightness can be adjusted to suit ambient cabin lighting conditions. The allowed settings are four (4) to thirteen (13), with four (4) being the dimmest and thirteen (13) the brightest. Typically a dark cabin will require a setting of four or five. A very bright cabin will require a setting of twelve or thirteen. The factory default setting is thirteen (13).
Fx-Maxx Air Handler Control Operations Manual P-15 Fan Motor Selection There are two basic fan motor types, shaded pole [SP] and split capacitor [SC]. Each motor reacts differently to speed control and each motor requires different timing for optimum fan speed variation. The default setting is "SP" which selects the shaded pole motor type, however, "SC" should be selected if a split capacitor type of fan motor is used.
Fx-Maxx Air Handler Control Operations Manual AMBIENT AIR TEMPERATURE TO WATER TEMPERATURE DIFFERENTIAL When equipped with an optional electric heater, the heater will overlap with the Chillwater heat by twenty-two degrees Fahrenheit ( 22 ° F ). The heater will turn on when heat is required and remain on until the Chillwater water temperature exceeds the ambient by twenty-two degrees Fahrenheit or until the room temperature is satisfied.
Fx-Maxx Air Handler Control Operations Manual SPECIFICATIONS SET POINT OPERATING RANGE ........................................................................................... 55 ° F TO 85 ° F AMBIENT TEMPERATURE OPERATING RANGE DISPLAYED ..................................................... 55 ° F TO 85 ° F SENSOR ACCURACY .......................................................................................................... ± 2 ° F AT 77 ° F LOW VOLTAGE LIMIT 115 VOLT UNITS ........................
Fx-Maxx Air Handler Control Operations Manual Revision: 06 04/09/09 WIRING DIAGRAM Page 15
Fx-Maxx Air Handler Control Operations Manual Revision: 06 04/09/09 CONVECTOR APPLICATION Page 16
