Micro Air Corporation FX2-AH Manuale utente

FX2-AH™

Digital Control

Operations Manual

Micro Air Corporation Phone (609) 259-2636

124 Route 526 www.Microair.net

Allentown NJ 08501 Fax (609) 259-6601

Revision: 03 10/27/10 2

Introduction:

The FX2-AH digital controller allows for easy adjustment of fan speed, operating

mode and temperature in a compact, easily readable display. The FX2-AH digital control

is designed to operate with marine tempered water systems.

Features include:

Four position menu navigation switch featuring a joystick style interface with

push on / push off control.

Built in room temperature sensor.

The display is compatible with Vimar Plana and Gewiss Playbus frames.

Visual symbols enable the viewer to see the operating status at a glance.

Easily programmed for customized operation.

Both automatic and manual six level fan speed adjustment.

Universal 115/230 VAC 50/60 Hz power supply.

Optional features include:

Outside air temperature sensor.

Alternate air sensor.

DC fan control board featuring programmable speed control for up to four

quiet DC fans.

CAN Computer area network capability

Revision: 03 10/27/10 3

Before you start:

1. Applying power:

When power is first applied, the display will show the software revision, and

then return to the last state the unit was in when power was removed.

Up Button

On/Off Button

Mode Select Fan Operation Button

Button

Down Button

2. Joystick operation:

The four position joystick may be tapped up, down, right, left or in the center

to make changes to the operation of the control. Gently tap this switch to

operate it. Excessive force will damage the switch.

3. Operating states:

The display operates in 2 operational states. In the OFF state, the temperature

is displayed and only fan operation is available. In the ON state, the display

shows the temperature set point, room temperature, fan, and valve status.

Switch between these states by pressing and releasing the On/Off button.

4. Sensor connections:

Two sensor jacks are provided on the power supply for connecting sensors.

They are labeled “OUTSIDE” and “ALT AIR”.

OUTSIDE

A loop water sensor must be plugged into the “OUTSIDE” jack on the power

supply. Loop water temperature may be checked from the view mode (See

“Viewing System Status” for details).

ALT AIR

A sensor for either the return air temperature or outside air temperature can be

connected to this jack. The program parameter must be set to select the function

of this jack. Use “OUTSIDE AIR ENABLE” if using the outside air sensor or

“ALT AIR ENABLE” if using the return air sensor. (See programmable

parameters for details on changing parameters).

The set point temperature will alternate with the outside air temperature

in the upper right side of the display if using the outside air sensor

Using the ALT AIR jack as a return air sensor will over ride the ambient

temperature reading.

Revision: 03 10/27/10 4

Operating Screens

Screen Saver

Room Temperature

Cool Mode Symbol

Valve Status Fan Operating

Screen Saver

In screen saver, the display will appear dim and the information will scroll across

the screen. Status symbols appear as needed and operation continues in the mode

selected. To exit this mode, just tap any button.

Cool Mode Room Air Temperature

Cool Mode Symbol Temperature Set

Point

Valve Status Fan Operating

Automatic Fan Mode

Cool mode

To select cooling only, tap the mode select button to scroll through the symbols in

the top left of the display until the cool symbol appears. Set the desired room temperature

by tapping the up or down button. The system will provide cooling as necessary. The

valve symbol will appear when system is cooling.

Revision: 03 10/27/10 5

Heat Mode Room Temperature

Heat Mode Symbol Temperature

Set Point

Valve Status

Or Fan Operating

Electric Heater

Fan Speed Indicator

Heat mode

To select heating only, tap the mode select button to scroll through the symbols in

the top left of the display until the heat symbol appears. Set the desired room temperature

by tapping the up or down button. The system will provide heating as necessary. The

valve or electric heat symbol will appear when the system is heating.

Automatic Mode Room Temperature

Automatic

Mode Symbol Temperature Set

Point

Valve Status Fan Operating

Fan Speed Indicator

Automatic Mode

To select automatic mode, tap the mode select button to scroll through the

symbols in the top left of the display until the automatic mode symbol appears. In this

mode, the system will automatically maintain room temperature. Set the desired room

temperature by tapping the up or down joystick button. When the system is operating, the

appropriate symbol will appear in the lower left corner.

Revision: 03 10/27/10 6

Manual Fan Low Animated Symbol Manual Fan High Animated Symbol

Fan Speed Indicator M=Manual Fan Fan Speed Indicator Fan Operation

Button

Operating the fan:

Fan speed may be controlled automatically by room temperature or manually. Tap

the joystick fan button to cycle through fan speeds and automatic operation. Manually

selected fan speed is indicated with the M showing before the speed indicator. When the

fan is automatically controlled, the M is not present. The fan may be controlled in the

cool, heat, automatic modes as well as in the off state to circulate room air.

Manual fan speed operation is not available when the water valve is not open if

the cycle fan option is set. Turn the unit off in this case and then manual fan operation

may be used.

Viewing System Status

AC Line Voltage

System Current

AC Line Frequency

Loop Water Temperature

In the ON state, press and hold the Mode select button for two seconds. The

display will indicate AC line voltage, System current, AC Line frequency, and loop water

temperature. If the loop water sensor is not installed or fails, no reading will appear. In

this case, electric heat will not be available and the system will open the valve when

necessary regardless of loop temperature.

Air Sensor Trouble

If the air sensor fails, AIR SENSOR TROUBLE will appear on the display. The

air sensor should be checked by a qualified service person.

Revision: 03 10/27/10 7

Programmable Parameters:

Descriptions of programmable parameters, factory default values, and allowable values

are shown in the table below. Highlighted parameters are available only with the DC

fan option board.

Entering the program mode:

To enter the program mode first put the unit in the off state. Press and hold the

joystick in the center for 3 seconds. Use the fan button to advance to the next parameter

and the mode button to go back to the last parameter. Use the up and down buttons to

change the parameters value. Exit the program mode when finished by pressing and

releasing the On/Off button or wait 60 seconds for the display to exit. Note: program

mode can also be entered by pressing the following sequence of buttons: Mode, Up,

Down, Mode in the off mode.

Parameter description:

oCycled fan: When set for cycled, the fan will operate on demand.

When set for continuous, the fan will always run unless you turn

the system off.

oReverse fan in heat: Fan speed will increase as the room

temperature rises if this parameter is set for reverse. If set for

normal, fan speed will decrease as room temperature rises. This

parameter only works in heat mode and the fan must be set for

automatic operation.

oSystem units: Degrees Fahrenheit (°F) or degrees Celsius (°C) can

be selected

oDisplay brightness: Display brightness can be set from 4 to 15 to

suit room lighting. Brightness will change as the number is

changed.

oScreen saver brightness: If set for (-) than a single bar (-) will

blink sequentially in the four corners of the display. Number

values from 1 to 8 can be set to suit room brightness and the unit

will operated as described in the screen saver section.

oTemperature calibration: This parameter allows the user to

calibrate the room air temperature sensor. The room temperature

will be displayed and can be adjusted +/-10 °F or +/-5°C

oAlt air enabled: When set for alt air enabled, the alt air jack can

be used with an optional air sensor to replace the display mounted

air sensor. When set for outside air enabled, an optional sensor

may be installed to monitor out side air temperature. This will

appear as OAT on the display.

oElectric heat/ No electric heat: Set this parameter only if the

system is equipped with an electric heater. The electric heater is

connected to the compressor L1 and compressor L2 terminals.

Heater current must not exceed 30 Amps.

Revision: 03 10/27/10 8

oNormal water valve operation: This feature allows service

personnel to force the water valve open to facilitate bleeding air

from the system. Selecting override will force the water valve open

for four hours. This operation can be reset by turning the system on

with the On/Off button.

oFan A speed 1-6: These parameters are used to optimize fan

performance and airflow. Fan A controls the triac driven fan output

on the FXII power supply. It also controls the DC fan connected to

the fan A terminals on the DC fan option board if installed. Speed

1 corresponds to the lowest speed setting available from the

display. Speed 6 corresponds to the highest speed setting. Fan

speed will change as the parameter is changed so that adjustments

can be observed.

oFan B, C, D speed 1-6: These options will only be visible if the

DC fan option board is installed. Adjustments are made in the

same manner as fan A. See DC fan option board and program

parameter table B for details.

oCAN ID: This number is assigned at installation for use with the

CAN system. It should only be changed by qualified service

technicians.

oGroup ID: This number is assigned at installation for use with the

CAN system. It should only be changed by qualified service

technicians.

oReset parameters: To reset all parameters to factory defaults,

select YES and then exit the program mode by pressing the

joystick center button. The display will show EEPROM RESET

then show the room temperature in the off mode.

Revision: 03 10/27/10 9

Program Parameters Table :

Description Default Value

Cycled fan Continuous Cycled or Continuous

Reverse fan in heat Reverse Reverse or Normal

System units °F °F or °C

Display brightness 15 4=Minimum

15=Maximum

Screen saver brightness 4 - and 1-8

Temperature calibration 0 Ambient +/- 10°F

Alternate air enabled Alternate air enabled Alternate air enabled or

Outside air enabled

Electric Heat No Electric Heat Electric Heat or No Electric

Heat

Normal valve operation Normal valve operation Normal valve operation or

Valve override

Fan A speed 1 30 30-90

Fan A speed 2 35 30-90

Fan A speed 3 40 30-90

Fan A speed 4 45 30-90

Fan A speed 5 55 30-90

Fan A speed 6 85 30-90

Fan B speed 1 30 30-90

Fan B speed 2 35 30-90

Fan B speed 3 40 30-90

Fan B speed 4 45 30-90

Fan B speed 5 55 30-90

Fan B speed 6 85 30-90

Fan C speed 1 30 30-90

Fan C speed 2 35 30-90

Fan C speed 3 40 30-90

Fan C speed 4 45 30-90

Fan C speed 5 55 30-90

Fan C speed 6 85 30-90

Fan D speed 1 30 30-90

Fan D speed 2 35 30-90

Fan D speed 3 40 30-90

Fan D speed 4 45 30-90

Fan D speed 5 55 30-90

Fan D speed 6 85 30-90

CAN ID 0 0-254

Group ID 0 0-254

Reset Parameters No No or Yes

Highlighted parameters are available only with the DC fan option board.

Revision: 03 10/27/10 10

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