CONTENTS

FX-1 Operations Manual

Micro Air Corporation

124 Route 526

Allentown, NJ 08501

I

NTRODUCTION

......................................................................................................................................... 1

B

ASIC

O

PERATION

.................................................................................................................................... 2

S

YSTEM

O

VERVIEW

.................................................................................................................................. 3

O

PERATOR

C

ONTROLS AND

D

ISPLAY

P

ANEL

........................................................................................ 4 & 5

D

UAL

B

UTTON

F

UNCTIONS

........................................................................................................................ 5

M

ODES OF

O

PERATION

...................................................................................................................... 6 & 7

A

WAY

-M

ODE

.......................................................................................................................................... 6

F

AN

M

ODES

............................................................................................................................................ 7

E

NTERING THE

P

ROGRAM

M

ODE

................................................................................................................ 8

D

EFAULT

P

ROGRAM

T

ABLE

....................................................................................................................... 9

P

ROGRAMMING

...................................................................................................................................... 10

P

ROGRAMMING

.................................................................................................................... 9 T

HROUGH

12

R

ESET

M

EMORIZED

D

EFAULTS

................................................................................................................ 12

M

EMORIZE

N

EW

P

ROGRAM

D

EFAULTS

..................................................................................................... 12

A

MBIENT

A

IR TO

W

ATER

T

EMPERATURE

D

IFFERENTIAL

C

HART

................................................................. 13

S

PECIFICATIONS

..................................................................................................................................... 14

W

IRING

D

IAGRAM

.................................................................................................................................. 15

I

NSTALLATION

O

VERVIEW

....................................................................................................................... 16

NOTES: All items labeled COMP should be considered Electric Heater applications.

When the Alternate Air Sensor is required the Outside Air Sensor is not available.

Copyright © 1997 Micro Air Corporation, All Rights Reserved

No part of this publication may be reproduced, translated, stored in a retrieval system, or transmitted on any form or by means electronic, mechanical, photocopying, recording or otherwise without prior written consent by Micro

Air Corporation.

Every precaution has been taken in the preparation of this manual to insure its accuracy. However, Micro Air

Corporation assumes no responsibility for errors and omissions. Neither is any liability assumed for damages resulting from the use of this product and information contained here in.

FX-1 Air Handler Control Operations Manual

I

NTRODUCTION

The FX-1 Air Handler Control is designed for use with Marine Chilled Water Air Conditioning

Systems. FX-1 Air Handler Control has a universal power supply that operates on 115, 230, 50 or 60 Hz AC power. FX-1 Air Handler Control includes the following standard and optional features:

Standard Features

User friendly 4 button display panel requires no manual for basic operation.

Five volt logic and micro controller located in the display.

3-digit 7-segment display indicates ° F or ° C.

Room temperature sensor integral in the display panel.

Automatic fan speed reduction as set point is approached.

Six [6] programmable manual fan speeds.

19 programmable parameters for custom installations.

Water In Sensor allowing individual cabin heating.

Away Mode for controlling relative humidity.

Universal AC power supply.

Nonvolatile memory retains settings without batteries.

Programmable display brightness control for night use.

Optional Features

The following optional items can be added by plugging the device into the appropriate jack and making the necessary programming changes.

Outside air temperature sensor

Alternate air temperature sensor

Custom paintable display panels

Electric Heat Chill Chaser Option

This manual is intended to provide information necessary to insure proper installation and operation of the FX-1 Air Handler Control.

Poor installation and

MISUNDERSTOOD

operating parameters will result in unsatisfactory performance and premature failure of the FX-1 Air Handler

Control.

Read This Manual Completely Before Proceeding !

If you require assistance prior to or during the installation of the FX-1 Air Handler Control call

Micro Air at 609-259-2636 or Fax your questions to Micro Air at 609-259-6601.

The FX-1 Air Handler Control is covered under existing Micro Air Corp. Warranty Policy.

Incorrect installation, neglect and system abuse are not covered under Micro Air's warranty policy.

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FX-1 Air Handler Control Operations Manual

B

ASIC

O

PERATION

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.

UP BUTTON Momentarily press and the set point will appear in the temperature display. The set point increases one degree each time the up button is pressed and released.

DOWN BUTTON Momentarily press and release to display the set point. The set point is decreased one degree each time the down button is pressed and released.

SELECT BUTTON The select button is used to select one of 4 Operating Modes.

Press and release to advance to the next mode. Continue to press and release until the desired Operating Mode is reached.

The mode selected is indicated by the Mode

LED.

THREE DIGIT DISPLAY The inside

[supply] temperature is displayed whenever the control is turned on. The display provides a readout of the inside air temperature.

HEAT MODE LED The heat mode LED is lit when Heating is selected.

COOL MODE LED The cool mode LED is lit when the Cooling is selected.

AUTO LED The auto LED is lit when the Automatic Heating or Cooling Mode is selected. The control will automatically switch to heating or cooling when this mode is selected.

AWAY MODE LED The away LED is lit when the Away Mode [ Rh Control ] is selected.

AUTO FAN SPEEDS The fan speeds are automatically reduced as the set point is approached.

FAN SPEED BAR GRAPH There are six [6] individual fan speed LED's. Each LED represents one [1] fan speed. Low fan [1] is indicated by illuminating the first LED. High fan speed is indicated by illuminating all six [6] LED's.

MANUAL FAN SPEEDS Manual fan speed settings are available via system programming. See the first programming item on page 10.

OPERATING LED The system operating status [ water valve open or closed ] is indicated by the operating LED.

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FX-1 Air Handler Control Operations Manual

O

VERVIEW

FX-1 Air Handler Control 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 Select Button until the desired Mode LED is illuminated.

Set the room temperature by pressing the up or down button. The set point can be viewed by momentarily pressing and releasing the up or down button.

Fan speed operation is automatic. The fan speed decreases as room temperature is approached. The fan will operate at low speed when set point is satisfied. Manual fan speeds can be selected by entering the program mode and selecting the desired fan speed. The fan will operate at the speed selected and will not change speeds with room temperature. See page 10 of this manual for programming instructions.

The fan can be programmed to cycle on and off with the Heating and Cooling demand. Normally the automatic fan speed operation is reversed in the heating mode, however, the fan speeds can be programmed to operate the same as in the cooling mode.

NORMAL HEATING OR COOLING CYCLE

When heating or cooling is called for the water valve switches to the appropriate mode. Four [4] seconds later the automatic fan control adjusts the fan to the proper speed. When the demand is satisfied, the water valve cycles off and the fan returns to low speed. If cooling is required, the water valve will not open unless adequate cooling water is available. The fan will remain in low speed until adequate cooling water is available. If heating is required the valve will not open unless adequate heating water is available. The fan remains in low speed until adequate heating water is available. The water temperature can be viewed by simultaneously pressing the Up and Down

Buttons while in the On Mode. Heat will be supplied when no heating water is available if the

Optional Electric Heater [Chill Chaser] has been installed.

While in a Heating or Cooling Mode the controller will maintain a two degrees Fahrenheit (2 °F) temperature variation. A four degree swing is required to cause the unit to shift to the opposite mode.

Once in a new mode, Heating or Cooling, FX-1 Air Handler Control will maintain a two degree differential.

AWAY-MODE

While in the on mode , press the Select Button until the Away Mode LED is lit. Every four (4) hours, the fan is started and air circulated for thirty (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. Four (4) hours after the temperature is satisfied or the Cooling Mode times out, the cycle is repeated. During the humidity cycle the Operating LED is lit while the system is Cooling.

MEMORY

Memory: FX-1 Air Handler Control has nonvolatile memory which requires no batteries or any form of backup power. When power is lost the operating parameters are retained indefinitely. When power is restored, the control resumes operating as last programmed. All operating and programming parameters are entered into nonvolatile memory instantly and are retained indefinitely.

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PERATOR

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ONTROLS AND

D

ISPLAY

P

ANEL

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. DOWN BUTTON Momentarily press and release the down button to display the set point. Press and release the down button to decrease the set point. The set point is decreased one degree each time the down button is pressed and released. The lowest set point allowed is 55 ° Fahrenheit. The down button is used in conjunction with the up button to display Water In temperature when the control is on. The down button is also used to reduce program values in the program mode.

3. UP BUTTON Momentarily press the up button and the set point will appear in the temperature display. Press and release the up button to increase the set point one degree. The set point is increased by one degree each time the up button is pressed and released. The highest set point allowed is 85 ° F. The up button is used with the down button to display the Water In temperature when the control is on. The up button is also used to increase program values in the program mode.

4. SELECT BUTTON The select button is used to select one of the four operating modes. Press and release the select button and the FX-1 Air Handler Control will advance to the next mode.

Continue to press and release the select button until the desired operating mode is reached. The mode selected is indicated by the Mode LED, i.e., Cool, Heat, Automatic or Away Mode.

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PERATOR

C

ONTROLS AND

D

ISPLAY

P

ANEL

5. COOL MODE LED The cool mode LED will be lit when the Cooling Mode has been selected.

HEAT MODE LED The heat mode LED will be lit when the Heat Mode has been selected. The heat mode LED is also lit when the optional electric heat is installed and the heat mode is selected. Electric heater status, on or off, is indicated by the Operating LED.

6. Away Mode LED The Away Mode LED will be lit when the Away Mode has been selected. This mode is used to control moisture during periods when the vessel is unoccupied.

7. READY LED The Ready LED is on whenever AC ready is supplied to the control. The ready LED remains on when the control is in the on and off modes.

8. THREE DIGIT SEVEN SEGMENT DISPLAY The inside air temperature is displayed in the window whenever the control is turned on. The three digit 7 segment display provides a readout of the inside air temperature which is located in the face plate. An optional alternate air sensor is available for installations that cannot use the face plate sensor.

The display also indicates program information, fault codes and outside air temperature when the optional outside air sensor is installed.

The display will momentarily indicate the set point when either the up or down button is pressed and released.

When the control resumes operation after a power interruption all the display LEDs will turn on for one second. This is a normal operating condition and is referred to as "Power On Reset".

9. FAN SPEED BAR GRAPH There are six [6] individual fan speed LED's in the Fan Speed Bar

Graph. Each LED represents one [1] fan speed. Low fan speed [1] is indicated by illuminating the first LED. High fan speed is indicated by illuminating all six [6] LED's. Any of the six [6] fan speeds available are displayed by illuminating the appropriate LED's.

10. OPERATING STATUS LED The Operating LED is on when the water valve is on and off when the water valve is off . The Operating LED also indicates when the optional electric heater is turned on.

D

UAL

B

UTTON

F

UNCTIONS

Up & Down Buttons… Simultaneously Press the Up and Down buttons, while in the Off Mode, to view the outside air temperature, providing the

OPTIONAL OUTSIDE AIR TEMPERATURE SENSOR has been installed. Parameter P-12 has to be programmed On.

Simultaneously Press the UP & Down Buttons while in the program mode to set new custom programming defaults.

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FX-1 Air Handler Control Operations Manual

M

ODES OF

O

PERATION

Off Mode

When the FX-1 Air Handler Control is in the off mode , all control outputs are turned off.

Program parameters and user settings are saved in nonvolatile memory. The program mode can only be accessed from the off mode. The Ready LED remains lit in the off mode.

On Mode

When the control is in the on mode , power will be supplied to the appropriate control outputs and the display will indicate the current state of operation. The operating and program parameters resume based on those stored the last time the unit was operating.

Cool Only Mode

When Cool LED is on, only the cooling systems are selected and operated as required. When the temperature drops below the set point, the system will not automatically switch to the heating mode. Cooling only is available for customers that do not want automatic cooling and heating operation.

Heating Mode Only

When the Heat LED is on, only the heating systems are selected and operated as required. Should the temperature rise above the set point, the system will not automatically switch to the cooling mode. Heating only is supplied for customers that require the system to not automatically switch from the heating to the cooling mode.

Automatic Mode

When the Automatic LED is on, both heating and cooling are supplied as required.

The heat and cool LEDs will be lit according to the mode required. When the system requires the water valve to be turned on for heating or cooling the Operating

LED will turn on when the valve is on and will turn off when the valve is off.

Temperature in a given mode will be maintained at two degrees Fahrenheit ( 2 ° F

), however, a four degree difference is required to allow the control to change modes. Once in a new mode, the temperature will remain within two degrees

Fahrenheit ( 2 ° F ) of the set point.

Away Mode

While in the on mode , press the Select Button until the Away Mode LED is illuminated. The first humidity cycle will start in one minute. Every four (4) hours, the fan is started and air circulated for thirty (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. Four (4) hours after the temperature is satisfied or the one hour timer runs out the cycle is repeated. During the humidity cycle the Operating LED is lit while the water valve is turned on and the system is cooling.

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F

AN

M

ODE

Automatic Fan Mode

FX-1 Air Handler Control has six automatic fan speeds available.

Speed six is high, three is medium and one is low or the slowest speed.

Automatic fan mode allows the FX-1 Air Handler Control to determine the required fan speed based on room temperature. The closer the room temperature is to the set point, the slower the fan will run. This permits a balance between the most efficient temperature control and slower, quieter fan speeds. Automatic fan operation is the factory default , however, manual fan speed control is available.

Manual Fan Mode

Program parameter one [1] is used to select one of the six (6) manual fan speeds available. Six (6) is the fastest and one (1) represents the slowest fan speed. Manual fan mode allows the user to select and maintain the desired fan speed manually. When a manual fan speed has been selected, the fan speed bar graph will indicate the speed selected by the number of LED's lit. Select speed 3, for example, and the first

3 LEDs in the fan bar graph will turn on. Manual Fan Mode is sometimes preferred when room temperature is constantly changing due to varying heat loads.

Program Mode Overview

The program mode is used to adjust the systems operating parameters to suit the particular needs of individual users.

The program mode is also used to tailor the air-conditioning system for the most efficient operation within an installation. Installation variables such as, ducting, sensor location and system layout effect the perceived operation of the overall system. The program mode allows the system to operate as efficiently as possible under all conditions. FX-1 Air Handler Control is shipped with factory programmable default settings which are stored in permanent memory and can be recalled at any time.

Warning

Severe electrical disturbances can sometimes upset the FX-1 Air Handler

Control 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.

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P

ROGRAM

M

ODE

Page 7

FX-1 Air Handler Control Operations Manual

E

NTERING

P

ROGRAM

M

ODE

The program mode can only be entered from the off mode . From the off mode and in the following order, press the Select , Up , Down and the Select buttons. These buttons have to be pressed and released in the order given. The letter "P" appears in the display.

The buttons have to be pressed in the sequence described. Remember "SUDS"… It's the key to enter and unlock the program mode. The characters "P" then "P 1" followed by the parameter setting, appear in the display. The FX-1 Air Handler Control is now in the program mode. Exit the program mode, to the off mode, by pressing and releasing the power button.

NOTE: The control will exit the program mode and return to the off mode if no programming is attempted for one (1) minute.

Restore Memorized Default Settings

IMPORTANT !

The memorized default settings can be restored by entering the program mode and setting P-17 to rSt . Exit the program mode and the software version number appears in the display. The memorized default settings are restored and the

FX-1 Air Handler Control returns to the off mode . The software version number is always displayed when you exit the program mode.

U

SING THE

P

ROGRAM

M

ODE

Increment from one program parameter to the next by pressing the select button while in the program mode . Press and release the select button to advance to the desired parameter. Use the up and down buttons to change the program parameter values. The programmable parameters range from P-1 through P-19.

Up and Down Buttons

The up and down buttons are used to select the data or set the desired limits for the parameter being programmed. This method is followed throughout the program mode, however, special instructions are included for individual functions as require them.

Exiting the Program Mode

There are two methods to exit the program mode. Press the power button and the FX-1 Air Handler

Control will return to the off mode . Not pressing any buttons or attempting any program changes for sixty (60) seconds will allow the control to exit the program mode to the off mode . Any programming changes that were made while in the program mode will be memorized and put into operation when the program mode is exited and the control is returned to the off mode.

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 Corp. about the system or programming the

FX-1 Air Handler Control be sure to have the software identification number available.

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FX-1 Air Handler Control Operations Manual

Programmable Parameters

There are nineteen (19) 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.

Program

Number

Description

Default

P-1 Fan Speed operation…Auto or Manual

P-2 High Fan Speed Limit (arbitrary units)

P-3 Low Fan Speed Limit (arbitrary units)

P-4 Unused --- Reserved for future options

P-5 Temperature Sensor Calibration

A = Automatic

85

55

N/A

0

Range

A = Automatic

1 thru 6 Manual Speeds

65 - 95

30 - 64

N/A

Ambient ± 10° F

P-6 Unused --- Reserved for future options N/A N/A

P-7 Unused --- Reserved for future options

P-8 Unused --- Reserved for future options

N/A

N/A

N/A

N/A

P-9 Unused --- Reserved for future options

P-10 Display Brightness Control

P-11 Display ° Fahrenheit or ° Celsius

P-12

Outside Air Temp Sensor Only

When Alt Air Sensor is Not Required

P-13 Reverse Fan Speeds During Heating Mode

P-14 Continous Fan or Cycle Fan with Demand

P-15 Chill Water Heating or Electric Heat Only

P-16

Fan motor type selection… Shaded pole or split capacitor.

P-17 Reset Memorized Programming Defaults

P-18

Water Valve Forced Open 4 Hours to

Bleed the Chill Water System

P-19

Ambient Air to Chillwater Temperature

Differential

N/A N/A

13 = Maximum

°F

OFF rEF = Reversed con = Continuous

Fan Operation nor = Chill Water

Heat Only

SP = Shaded Pole nor = Normal nor = Normal

Operation

4 = Low

13 = Max imum

°F = Fahrenheit Displayed

°C = Celsius Displayed

OFF = Alt Air Available

On = OAT Sensor Only nor = Normal Fan Operation rEF = Reversed Fan In Heating

CYC = Cycle Fan On Deman d con = Continuous Fan Operation nor = Chill Water Heat Only

ELE = Electric Heater Installed

SP = Shaded Pole Fan Motor

SC = Split Cap. Fan Motor rSt = Reset Defaults nor = Normal Operation

OPn = Valve Forced Open

15°F 5°F to 25° Fahrenheit

Should any programming problems or confusion occur, reset the Memorized Default Settings by entering the program mode and setting P-17 to rSt.

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P

ROGRAMMING

P-1: Fan Speed Automatic or Manual

The program values allowed are A, followed by one (1) through six (6). Select

"A" (factory default setting) for automatic fan speeds and the fan will operate in conjunction with room temperature. The further the room temperature is from set point, the faster the fan will run in the cooling mode. The fan speed will gradually decrease as the set point is approached and the fan will run at low speed (1) when the set point is satisfied. Select any one of six (6) manual fan speeds available, for example, select three (3) and the fan will operate at medium speed under all temperature conditions. When a manual fan speed is selected the fan will always operate at the speed selected and will not vary with room temperature.

P-2: High Fan Limit

The upper fan speed limit can be tailored to suit various motors and operating conditions. The high fan limit is adjusted with the system installed and operational. The range of values are 56 through

85 and represent arbitrary units. Setting a higher number, results in a higher fan speed, setting lower numbers, lowers the high fan speed limit. Use the up and down buttons to select the desired high fan speed limit. The factory default setting is eighty-five (85).

P-3: Low Fan Limit

The low fan limit determines the lowest output allowed for the low fan speed. The range of values for the low fan speeds are 30 through 55, in arbitrary units. Use the up and down buttons to select the desired low fan speed limit. Setting a higher number, results in a higher fan speed, setting lower numbers, lowers the low fan speed limit. The factory default setting is 45.

IMPORTANT ! Once the high and low fan speed limits are set, the unit will automatically readjust the remaining fan speeds to produce six (6) equally spaced in both the automatic and manual fan speeds modes.

P-4: Reserved For Future Options

Program item P-4 is reserved for future options.

P-5: Temperature Calibration

Use this feature to calibrate the air sensor within a range of ± ten (10) °F. Enter the program mode and the ambient temperature appears in the display. Use the up and down keys to select the desired offset. The temperature in the display will increase or decrease according to the offset programmed.

The factory default setting is zero.

P-6, P-7, P-8 and P-9: Reserved

Program items P-6, P-7, P-8 and P-9 are reserved for future options.

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FX-1 Air Handler Control Operations Manual

P-10: 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).

P-11: Fahrenheit or Celsius Selection

The unit can be programmed to display either Fahrenheit or Celsius. Programming °F selects degrees Fahrenheit and programming °C displays degrees Celsius. The factory default setting is °F,

Fahrenheit. When degrees Celsius (°C) is selected the readings are displayed in tenths, i.e. 22.2 °.

P-12: Outside Air Sensor Option

The ALT AIR jack can be used as an optional outside air temperature sensor input when the alternate air sensor is not required. Plug in the outside air sensor and program P-12 On. The outside temperature can be viewed from the Off Mode by simultaneously pressing the Up and Down

Buttons. The outside air temperature will appear in the display while both the Up and Down Buttons are depressed. Note: The OAT can only be viewed while FX-1 Air Handler Control is in the Off

Mode.

P-13: Reverse Automatic Fan Speeds During Heating

The automatic fan speeds can be reversed during the heating mode to improve heat output in cooler climates. The fan speed is decreased as the temperature spread increases. The fan will speed up as the set point is approached. Lowering the fan speed when the cabin is cold raises the supply air temperature. The fan switches to low speed when the set point is satisfied and the water valve cycles off. The fan can be programmed to operate the same as in cooling by programming P-13 nor which represents normal fan operation during the heating cycle. The factory default is rEF , which reverses the automatic fan speeds during heating.

P-14: Cycle Fan with the Cooling or Heating Demand

The fan can be programmed to run continuously when the system is on or can be allowed to cycle with the compressor. When cycled with demand, the fan will operate only when heating or cooling is called for. To cycle the fan with the Heating or Cooling Demand select CYC . To operate the fan continuously select con which represents continuous fan operation. The factory default is continuous fan operation [con] when the system is on.

P-15: Chill Chaser Option

Units may be equipped with Electric Chill Chaser or in line Electric Duct Heater. Chill Chasers are used when the main Chill Water system is in the Cooling Mode and a particular cabin requires heating. The chill chasers are also used to supplement Chill Water heating when necessary. Program

P-15 for ELE to select the Electric Heat Chill Chaser Option. The factory default is nor which normally selects Hydronic Heating and Cooling only. I

MPORTANT

: Please note that option P-15 has to be programed for ELE to allow electric heat chill chaser operation.

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P-16: Fan Motor Selection

There are two basic fan motor types, shaded pole and split capacitor. Each motor reacts differently to speed control and each motor requires different timing for optimum fan speed variation. The default setting is "SC" which selects the split capacitor motor type, however, "SP" should be selected if a shaded pole type of fan motor is used in the system. Most air handlers are supplied with split capacitor type fan motors. The factory default is "SC" split capacitor fan motor type.

P-17: Reset Memorized Defaults

The default programming parameters can be reset by entering the program mode and selecting rSt .

This will restore the programmable parameters to the values selected when the system was shipped.

The program parameters listed on page 9 may be altered by Micro Air Corp., the installing dealer or the end user. Once new defaults are entered ( see page 5, dual button functions) and memorized the N

EW

defaults will be reset. The original factory programmable parameters as listed on page 9 will have to be restored manually.

Why Memorize New Defaults?

Once the desired programming changes have been made and the system tests satisfactorily, your work can be saved as the new factory defaults . Your new defaults are initiated by simultaneously pressing and releasing the up and down buttons prior to exiting the program mode. New defaults can be initialized at any time by entering the program mode and following the above instructions.

Once new defaults have been initialized the control will revert back to the new defaults whenever factory defaults are restored as described on pages 8 of this manual.

P-18: Hydronic Valve Forced Open

This feature allows service personnel to force the hydronic water valve open to facilitate bleeding air from the system. Selecting OPn will force the valve open for 4 hours while normal cooling and heating is maintained. The valve can be returned to normal operation anytime during the cycle by selecting nor which stands for normal operation.

P-19: Ambient to Water Temperature Differential

The difference between ambient air temperature and hydronic water temperature is used to control water valve opening and closing. Selecting ten ( 10 ° F ) opens the valve when water temperature is ten degrees less than ambient in cooling mode and fifteen degrees ( 15 ° F ) greater than ambient in the heating mode . Figure two ( 2 ), shown on page 13, illustrates the relationship between ambient air and hydronic water temperature using the factory default values.

Careful selection of the temperature differential can fully utilize the ships heating and cooling resources. For example, while in the cooling mode and using a ten degree value, the valve will open to allow some cooling while the hydronic system is coming down to temperature… The programmable range is 5 to 25 ° Fahrenheit and the Factory Default Setting is 15 ° F.

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When equipped with an optional electric heater, the heater will overlap with the hydronic heat by twenty-two degrees Fahrenheit ( 22 ° F). The heater will turn on when heat is required and remain on until the hydronic water temperature exceeds the ambient by twenty-two degrees Fahrenheit or until the room temperature is satisfied.

The electric heat is allowed to overlap the hydronic heat to supplement the main heating system during very cold conditions.

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FX-1 Air Handler Control Operations Manual

S

PECIFICATIONS

S

ET

P

OINT

O

PERATING

R

ANGE

............................................................................................ 55 ° F

TO

85 ° F

A

MBIENT

T

EMPERATURE

O

PERATING

R

ANGE

D

ISPLAYED

..................................................... 55 ° F

TO

85 ° F

S

ENSOR

A

CCURACY

.......................................................................................................... ± 2 ° F

AT

77 ° F

L

OW

V

OLTAGE

L

IMIT

115

VOLT UNITS

........................................................................................... 75 VAC

L

OW

V

OLTAGE

L

IMIT

220

VOLT UNITS

......................................................................................... 175 VAC

L

OW

V

OLTAGE

P

ROCESSOR

R

ESET

................................................................................................. 60 VAC

L

INE

V

OLTAGE

..................................................................................................... 115 T

HROUGH

230 VAC

F

REQUENCY

............................................................................................................................ 50

OR

60 H

Z

F

AN

O

UTPUT

............................................................................................................. 6 A

MPS

@ 115 VAC

F

AN

O

UTPUT

............................................................................................................. 6 A

MPS

@ 230 VAC

V

ALVE

O

UTPUT

...................................................................................................... 1/4 A

MP

@ 115 VAC

V

ALVE

O

UTPUT

...................................................................................................... 1/4 A

MP

@ 230 VAC

P

UMP

O

UTPUT

........................................................................................................... 1/4 HP @ 115 VAC

P

UMP

O

UTPUT

........................................................................................................... 1/2 HP @ 230 VAC

H

EATER

O

UTPUT

.......................................................................................................... 1 HP @ 115 VAC

H

EATER

O

UTPUT

.......................................................................................................... 2 HP @ 230 VAC

M

INIMUM

A

MBIENT

O

PERATING

T

EMPERATURE

.....................................................................................0 ° F

M

AXIMUM

A

MBIENT

O

PERATING

T

EMPERATURE

................................................................................180 ° F

M

AXIMUM

R

H CONDITIONS

...................................................................................... 99% N

ON

C

ONDENSING

P

OWER

C

ONSUMPTION

................................................................................................. L

ESS

T

HAN

5 W

ATTS

D

IMENSIONS

D

ISPLAY

P

ANEL

................................................................................................................. 3.75" X 3.75"

P

ANEL

C

UT

O

UT

........................................................................................................... 3.150" X 3.150"

C

ABLE

L

ENGTHS

D

ISPLAY

C

ABLE

.................................................................................................................... S

TANDARD

15'

A

LTERNATE

A

IR

S

ENSOR

........................................................................................................ S

TANDARD

7'

O

UTSIDE

A

IR

S

ENSOR

.............................................................................................................. S

TANDARD

7'

S

YSTEM

I

NPUTS

1 ............................................................................................................ I

NSIDE

A

IR

T

EMPERATURE

S

ENSOR

1 ................................................................................ A

LTERNATE

A

IR

T

EMPERATURE

S

ENSOR

[ O

PTIONAL

]

1 .................................................................................... C

HILLWATER

W

ATER

I

NLET

T

EMPERATURE

S

ENSOR

1 .................................................................................... O

UTSIDE

A

IR

T

EMPERATURE

S

ENSOR

[ O

PTIONAL

]

NOTES: The Outside Air Sensor is not available when the alternate air sensor is required.

Maximum length of display cable is fifty (50) feet. Sensor cable lengths should be limited to 50 feet.

The outside air sensor and alternate air sensors are optional items and are not included with the standard control package.

Revision: 04 04/09/09 Page 14

FX-1 Air Handler Control Operations Manual

Revision: 04 04/09/09 Page 15

FX-1 Air Handler Control Operations Manual I

NSTALLATION

O

VERVIEW

Revision: 04 04/09/09 Page 16