5.2F Fan Setting and Operation
Use the “FAN” button to adjust the fan operation. There are 3 choices for fan operation: “on”, “off” (denoted by “OF”), or program (denoted by “Pr”). To set operation,
1.Press the “FAN” button. The display will indicate the cur- rent fan setting.
2.Use the “SET” + or – buttons to adjust fan operation (“on”, “OF”’ or “Pr”). Press the “FAN” button again or leave the unit alone for 10 seconds to return to home state.
To select damper operation:
1.Press the “DAMPER” button. The letter “d” will appear on the display, along with the current mode setting.
2.Use the “SET” + or – buttons to adjust the fan setting to the desired mode (“on”, “OF”, or “Pr”).
3.Press the “DAMPER” button again or leave the control alone for 10 seconds to select the indicated damper mode and return to the home state.
Figure 5: Setting Fan
5.2G Fan On Fan Off Fan Program
The fan display reading in the normal display sequence does not indicate the current fan setting, it indicates the current fan status, and will always read either on or off. With the fan in the “on” mode, the fan will run continuously. This does not effect the dehumidification functions of the system. In other words, the system may or may not be ventilating or dehumidifying while the fan is running. Common reasons for operating the fan continuously are continuous filtration and air recirculation. With the fan in the “off” or “program” mode, the fan will operate only when needed by other functions of the system. The fan will remain off unless the system is dehumidifying and/or ventilating. The fan always runs during dehumidification, it also always runs during ventilation. To completely turn the system off, use the “ON/OFF” button as described earlier.
5.2H Damper Operation and Setting (Ventilation)
The damper setting controls the ventilation function of the system. It has no control over the dehumidification function. In order to provide ventilation, the damper must be open (“on”) and the fan must be running. The controller takes care of these two functions automatically, so whenever the damper is open (“on”), the fan is running.
This is true even if the fan has been set to the “off” mode.
The ventilation indicator “..” will be lit whenever the unit is ventilating
There are three damper operation modes, “on”, “off” (denoted by “OF”), and program (denoted by “”Pr”). With the damper in the “on” mode, the damper will be open and the fan of the system will be operating in order to introduce fresh air into the space. Use this mode for continuous fresh air ventilation. The fan is always on when the damper is open. When in “off” mode, the damper will not open and the sys- tem will not ventilate.
When in the “program” mode, the control will operate the damper and fan (ventilate) according to the programmed ventilation schedule (see the section referring to programming the ventilation schedule).
Damper On | Damper Off | Damper Program |
Figure 6: Setting Damper
5.2I Intermittent or Programmed Ventilation
With the damper in program mode (denoted by “Pr”
when setting the damper operation) the system will operate the ventilation function according to the current ventilation program.
There are 4 programs available for ventilation Monday through Friday. There are also 4 programs for Saturday and 4 programs for Sunday. No other choice of days is available. Each program to be used has an “on event” called “START” which brings the ventilation function on, and an “off event” called “STOP” which turns the function off. Each START and STOP must be entered in to the controller.
Figure 7: Ventilation Programming
To set or adjust the ventilation program:
1.Press the “PROG” button two times. The display will indi- cate “Program 1/start” at the bottom, and the hour display will flash.
2.Use the “SET” + or – button to adjust the hour for the Program 1 start time. Be sure to pay attention to the am/pm setting.
3.Press the “PROG” button again. The display will indicate “Program 1/start” at the bottom, and now the minute dis- play will flash.
4.Use the “SET” + or – buttons to adjust to the desired minute setting.
5.Press the “PROG” button again to move on to the “Program 1/stop” event. The display will indicate “Program 1/stop” at the bottom, and the hour display will flash.
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