Liebert TM-10098 User Manual

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Large Systems

iCOM

Environmental Training and Service Manual

Microprocessor

TM-10098: Rev. 02/06

Training & Service

iCOM

Control Training and Service Manual

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Manual

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Controls Training and Service Manual

Disclaimer of Warranties and Limitations of Liabilities

The authors and editors have taken every precaution to ensure accuracy and completeness in this manual. The authors and editors make no expressed or implied warranty of any kind with regard to the documentation in this manual. Liebert Corporation assumes no responsibility, and disclaims all liability for incidental or consequential damages resulting from the use of this information or from errors or omissions. Liebert Corporation may make improvements and/or changes in the product(s) described in this manual at any time. Information in this manual is subject to change at any time and does not represent a commitment on the part of Liebert Corporation.

Liebert® and the Liebert logo are registered trademarks of Liebert Corporation. Emerson® and the Emerson logo are registered trademarks of Emerson Electric Co.

Specifications subject to change without notice.

Printed in the United States of America

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Table of Contents

Chapter 1: Temperature/ Humidity Control 6

Temperature Control Types Intelligent Control Proportional Control Proportional + Integral (PI) Control Proportional + Integral + Derivative (PID) Control Temperature Control Operations and Charts 2 Stage Compressorized 4 Stage Compressorized Cooling Dual Compressor Digital Scroll Operation Glycool Cooling Dual Source Cooling Staged Reheat Humidity Control Absolute (Predictive) Humidity Control Relative Humidity Control Humidifier Operation Autoflush Control for Infrared Dehumidification Operation 1 Stage Dehumidification, Compressorized Operation 2 Stage Dehumidification, Compressorized Operation Reheat During Dehumidification Additional Programs Next Maintenance Calculation Shared Parameters an Understanding Networking and Functions Teamwork Unit Lead/ Lag or Running/ Standby Fuctions

6 6 8 8

9 11 11 11 13 18 18 20 21 25 25 27 27 29 31 31 32 33 35 38 40 41 48 49

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Chapter 2: Programming Functions 52

Programming Functions

iCOM Display Components and Functions iCOM Keypad Layout Descriptions iCOM Display Symbols/ Icons

Programming Functions Status Display Screens Menu Screens – Icons/ Parameter Names User Menu Icons and Descriptions Service Menu Icons and Descriptions Advanced Menu Icons and Descriptions User Menu Parameters Service Menu Parameters Advanced Menu Parameters Event Notifications Parameters Event ID Number, Description and Function

52 53 54 55 56 56 57 58 59 60 60 67 84 90 92

Chapter 3: iCOM Hardware Connections 100

Introduction Display Boards Unit Control Board Switches and Jumpers Large Display Switches and Jumpers Small Display Switches and Jumpers Temperature/ Humidity Board Switches and Jumpers Unit Control Board Plug Connectors Fuse Board Connectors Temperature/ Humidity Board Connectors

100 101 102 104 105 106 107 111 112

Chapter 4: General Troubleshooting Data 114

Introduction Isolation Basic Operation of the Triac Basic Operation of the Opto-Isolator Troubleshooting the Opto-Isolator

114 115 116 118 119

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Unit Control Board: Opto-Isolator/ Triac Legends iCOM Diagnostics/ Service Mode Programs

Basic Troubleshooting Steps Moisture Content Charts Suction Transducer Information Digital Scroll High Temperature Sensor Chart Unit Code Description Troubleshooting Checklist Glossary of Unit/ Systems Parameters

121 123 124 126 143 144 145 146 147

Glossary of Terms 156 Computer and Network Terms 160 Network Information 165 How To Use The Schematics 169 Electrical Schematics 170

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Chapter 1

Temperature and Humidity

Control Programs

This section provides details on how your Liebert iCOM control responds to the user programmed inputs values and room conditions. Refer to this section when you need specific information control operation. This section includes details on four (4) user selectable temperature control programs and two (2) user selectable and humidity control programs.

Cooling and/ or Heating Required, in Percent (%)

The temperature control programs for the iCOM microprocessor is based on a calculated percent (%) requirement for cooling and/ or heating. This percent (%) requirement is determined by the control type (algorithm) selected by the user.

The four (4) user selectable temperature control programs are:

• Intelligent

• Proportional (P)

• Proportional + Integral (PI)

• Proportional + Integral + Derivative (PID)

Temperature Control Program Types

Intelligent Control – Factory Default Setting

The Intelligent Control operates from a set of general rules that defines how the control output should be adjusted for different system conditions. The rules are designed to duplicate the actions that an experienced human operator would take if manually controlling the system.

Basically, this is done in a three-function process that differs from earlier mathematically defined strict type data, hence, fuzzy logic. The on and off, true or

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untrue type of statement is not used. The consideration now is how to set the input value into a membership set, qualify this membership with rules, then decide on the output consequence for action. It is not really that simple, but it is basically how it works. The process:

Membership

• Measure value of input variables

• Map and transfer data into range of set domain

• Assign input membership into sets

Knowledge Base/Decision Making

• Provide a data base of definitions for rules base

• Provide a rules base and define function and domain

• Simulate human decision making based on concepts and actions

defined by implications and rules

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Consequence

• Convert defined range of knowledge to a corresponding output variable

• Define a non-intelligent action from a deduced intelligent action

Just as an operator might take several things into consideration before making a temperature control decision, the intelligent control can be programmed to do likewise. For example, not only is the current temperature used in making temperature control decisions, but also conditions such as:

• How fast is the temperature changing?

• What direction is the temperature changing?

• What is the cooling output now?

• What was the cooling output in the past?

• How long ago was the cooling output changed?

• Other factors

Any number of rules can be used in an intelligent control to define the controls operation under various operating conditions. Hence, several advantages are gained from this type of control over a more standard control approach that uses a fixed mathematical equation to define the operation of the control for all conditions (such as a Proportional or PID Control). You can expect Intelligent Control to be

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more efficient and precise for most applications, but system performance based on room conditions is not as predictable as standard approaches that use a fixed equation.

The Liebert Intelligent Control includes rules that significantly enhance the performance of the system, both from a standpoint of precision control and system reliability.

Rules are included that:

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• Cause the control to ignore very small or temporary temperature/ humidity deviations. This eliminates unnecessary control adjustments that contribute to control instability.

• Help limit the frequency of control adjustments thus extending the life of system components that are susceptible to mechanical wear or cycling.

• Recognize undesired modes of control operation such as hunting, and make adjustments to the control response to eliminate them.

• Estimate the present load on the system and then tend to force the control output to the appropriate state.

• Recognizes conditions, which indicate a large load change and allows the control to temporarily respond more quickly than normal.

• Cause the control to anticipate the need for reheat during dehumidification and activates reheats when overcooling occurs.

Proportional (P) Control

The proportional control is the standard control method that maintains the room at a temperature proportional to the load. The temperature maintained increases as the room load increases. At full load the room would be controlled at a temperature equal to the temperature set point (TSP) plus ½ of the temperature proportional band (PB). The operator programmed inputs are the temperature set point (TSP) and temperature proportional band (PB) adjustments. The operator may also program a temperature dead band (DB) adjustment.

Proportional + Integral (PI) Control

The PI control combines two (2) individual terms to determine the control output for a given set of conditions. Note that PI control is used only for temperature. If PI control is selected, the humidity control will be in percent relative humidity (%RH).

The proportional (P) term is determined by the difference between the current temperature and the control set point. This term is expressed in % cooling (heating desired for each degree above (below) the set point. It is adjustable from 0% to 100% per degree. The purpose of this term is to adjust the control output for any deviation between the current temperature and the control set point.

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The integral (I) term is determined by two things: the difference between the return air temperature and control set point and the amount of time this difference has existed. This term is expressed in % cooling (heating) desired for each minute and degree above (below) the set point. It is adjustable from 0% - 100% per degree/minute. The purpose of this term is to force the control to maintain the temperature around the set point by slowly but continuously adding (subtracting) a small amount of cooling (heating) to the total control output until the temperature is at the set point.

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Proportional + Integral + Derivative (PID) Control

The PID control combines three (3) individual terms to determine the control output for a given set of conditions. Note that PID control is used only for temperature. If PID control is selected, the humidity control will be in percent relative humidity (%RH).

The derivative (D) term is determined by the rate of change of temperature. This term is expressed in % cooling (heating) desired for each degree per minute rise (fall) in temperature. It is adjustable from 0% to 100% per degree/minute. The purpose of this term is to adjust the control output for quickly changing temperatures, thus providing an anticipation control.

All three terms are adjusted by selecting the “Setpoints” icon in either the USER or SERVICE Menu screen. If PID control is selected, the temperature proportional band value (and optional temperature dead band value) is not used by the control. For optimum performance, a PID control must be adjusted or tuned according to the characteristics of the particular space and load to be controlled. Improper tuning can cause the control to exhibit poor response and/ or hunting. The characteristics of the space and load may change seasonally, so occasional returning is required for optimum performance.

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A suggested tuning procedure is as follows:

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1. Initially adjust the integral and derivative settings to 0% / degree-min and 0% / degree / min..

2. Starting with 20% / degree, adjust the proportional setting in small increments (10% steps) until the control sustains a constant hunting action (the temperature swings are approximately the same amplitude from one peak to the next).

3. Note the time in minutes between peaks of adjacent temperature swings and the amplitude of the temperature swing (degrees above the set point).

4. Adjust the proportional control setting to about l/2 the value obtained in Step 2.

5. Adjust the integral setting to a value calculated by the following equation: approximate room load (in % full load) time between peaks x peak amplitude x 4.

Note: If calculation results in a value of less than 1%, then set the integral to 1%.

6. Adjust the derivative to a value calculated by the following equation: time between peaks x 5%.

The above tuning procedure is only an approximation for an initial set of adjustments and are based on the "average" room characteristics. Your particular settings may need to be further adjusted for optimum PID control performance.

Some suggestions for additional tuning are as follows:

• If cooling output overshoot is occurring on load changes, decrease the proportional setting or the derivative setting.

• If system hunting occurs with constant room load, decrease the integral setting.

• If the control responds too slowly, resulting in large temperature excursions on a load change, increase the proportional setting or the derivative setting.

• If a constant temperature deviation exists between the temperature and set point, increase the integral setting.

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Temperature Control

Operations and Charts

The temperature proportional control band value is divided into two parts: the temperature set point plus ½ of the temperature proportional band for cooling operation and the temperature set point minus ½ of the temperature proportional band for heating operation. A temperature dead band can also be programmed into the control to shift the cooling and/ or heating on/ off operations away from the temperature set point.

This programmed temperature dead band value is divided into two parts: the temperature set point plus ½ of the dead band – no cooling operation and the temperature set point minus ½ of the band – no heating operation.

The temperature set point range is adjustable from 41 - 104°F in increments of 1°F. The temperature proportional band range is adjustable from 2 - 54°F in increments of 1°F. The temperature dead band range is adjustable from 0 - 36°F in increments of 1°F.

Standard 2 Stage Compressorized Cooling

The basic temperature cooling control band is established at the temperature set point with the length equal to ½ of the programmed temperature proportional band divided by the number of cooling stages.

The Liebert DS units are supplied with two (2) compressors, each compressor is rated at ½ of the unit capacity. The two (2) compressors will be either the semi-hermetic or scroll type and will operate in an on/ off configuration to cool the space.

The temperature controller activates the first cooling stage (lead compressor) when the return air temperature increases to 50% of the cooling proportional band and the second cooling stage (lag compressor) at 100% of the cooling proportional band. The optional hot gas bypass solenoid valve, supplied with each compressor when ordered, is also energized on a call for cooling.

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The temperature controller deactivates the second stage of cooling (lag compressor) when the return air temperature decreases to 50% of the cooling proportional control band value. The first cooling stage (lead compressor) is deactivated when the return air temperature decreases to the temperature set point value or 0% of the cooling proportional control band value.

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2 Stage Compressorized Cooling – No Dead Band

Note: in the above example that the control band begins at the 70°F temperature set point and has a length of 4°F, which is ½ of the programmed temperature proportional band value.

As the return air temperature increases Cooling 1 (lead compressor) is activated at 72°F or 50% of the cooling control band. If the return air temperature continues to increase Cooling 2 (lag compressor) will activate at 74°F or 100% of the cooling control band.

When the return air temperature starts to decrease, Cooling 2 (lag compressor) is deactivated at 72°F or 50% of the cooling control band and Cooling 1 (lead compressor) is deactivated at the temperature set point of 70°F or 0% of the cooling control band.

Temp Set Point: 70°F Proportional Band: 8°F

Temp Set Point + (1/2 Proportional Band)

Cool 1 On

70 71 72 73 74 75

Cool 1 Off

Cool 2 Off

Cool 2 On

Increasing Temperature

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2 Stage Compressorized Cooling – With Dead Band

Note: in the above example that the control band begins at the 70°F temperature set point and has a length of 5°F, which is ½ of the programmed temperature dead band value plus ½ of the programmed temperature proportional band value.

As the return air temperature increases Cooling 1 (lead compressor) is activated at 73°F or ½ of the dead band value plus 50% of the cooling control band. If the return air temperature continues to increase Cooling 2 (lag compressor) will activate at 75°F or ½ of the dead band value plus 100% of the cooling control band.

When the return air temperature starts to decrease, Cooling 2 (lag compressor) is deactivated at 73°F or ½ of the dead band value plus 50% of the cooling control band and Cooling 1 (lead compressor) is deactivated at 71°F or ½ of the dead band value plus 0% of the cooling control band.

Remember the temperature dead band value is used by the control to shift the cooling on/ off operations away from the temperature set point.

Temp Set Point + (1/2 Dead Band + 1/2 Proportional Band)

Temp Set Point: 70°F Proportional Band: 8°F Dead Band: 2°F

Cool 1 On

70 71 72 73 74 75

Cool 1 Off

Cool 2 Off

Increasing Temperature

Cool 2 On

Optional 4 - Stage Cooling, Two (2) Compressors with Unloaders

The Liebert DS units are supplied with two (2) compressors, each compressor is rated at ½ of the unit capacity. Each compressor will be the semi-hermetic type

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and will be supplied with an electrical cylinder unloader valve. The electrical solenoid valve used to unload or reduce the cooling capacity of the compressor. The compressors will operate in an on/ off - loaded/ unloaded configuration method to cool the space. The hot gas bypass solenoid valve option is not available on 4 stage systems.

The temperature controller activates the first cooling stage, lead compressor unloaded, when the return air temperature increases to 25% of the cooling proportional band. The second cooling stage, lag compressor unloaded, is activated when the return air temperature increases to 50% of the cooling proportional band.

The temperature controller activates the third cooling stage, the lead compressor loaded, when the return air temperature increases to 75% of the cooling proportional band. The fourth cooling stage, the lag compressor loaded, is activated when the return air temperature increases to 100% of the cooling proportional band.

The temperature controller deactivates the fourth cooling stage, lag compressor loaded, when the return air temperature decreases to 75% of the cooling proportional control band value. The third cooling stage, lead compressor loaded, is deactivated when the return air temperature decreases to 50% of the cooling proportional control band value.

The temperature controller deactivates the second cooling stage, lag compressor unloaded, when the return air temperature decreases to 25% of the cooling proportional control band value. The first cooling stage, lead compressor unloaded, is deactivated when the return air temperature decreases to the temperature set point value or 0% of the cooling proportional control band value.

The table below shows the devices activated by each of the four cooling stages.

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STAGE COMPRESSORS, UNLOADER STATE

Compressor 1 On, Unloader On (Energized) Compressor 2 Off, Unloader Off (De-Energized)

Compressor 1 On, Unloader On (Energized) Compressor 2 Off, Unloader On (Energized)

Compressor 1 On, Unloader Off (De-Energized) Compressor 2 On, Unloader On (Energized)

Compressor 1 On, Unloader Off (De-Energized) Compressor 2 On, Unloader Off (De-Energized)

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4 Stage Compressorized Cooling – No Dead Band

Note: in the above example that the control band begins at the 70°F temperature set point and has a length of 4°F, which is ½ of the programmed temperature proportional band value.

As the return air temperature increases Cooling 1, the lead compressor unloaded, is activated at 71°F or 25% of the cooling control band. If the return air temperature continues to increase Cooling 2, the lag compressor unloaded is activated at 72°F or 50% of the cooling control band. If the return air temperature continues to increase Cooling 3, the lead compressor is loaded at 73°F or 75% of the cooling control band. If the return air temperature continues to increase Cooling 4, the lag compressor is loaded at 74°F or 100% of the cooling control band.

When the return air temperature starts to decrease, Cooling 4 is deactivated at 73°F or 75% of the cooling control band. If the return air temperature continues to decrease Cooling 3 is deactivate at 72°F or 50% of the cooling control band. If the return air temperature continues to decrease Cooling 2 is deactivate at 71°F or 25% of the cooling control band and Cooling 1 is deactivated at the temperature set point of 70°F or 0% of the cooling control band.

Temp Set Point: 70°F Proportional Band: 8°F

Temp Set Point + (1/2 Proportional Band)

Cool 2 On

Cool 1 On

70 71 72 73 74 75

Cool 1 Off

Cool 3 Off

Cool 3 On

Cool 4 OffCool 2 Off

Cool 4 On

Increasing Temperature

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The example below is based on a temperature set point of 70°F with a control band length of 4°F, which is ½ of the programmed temperature proportional band value.

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STAGE TEMPERATURE

Cool 1 ON Cool 2 ON Cool 3 ON

Cool 4 ON Cool 4 OFF Cool 3 OFF Cool 2 OFF Cool 1 OFF Set point

Set point plus 1°F Set point plus 2°F Set point plus 3°F Set point plus 4°F Set point plus 3°F Set point plus 2°F Set point plus 1°F

4 Stage Compressorized Cooling – With Dead Band

Temp Set Point + (1/2 Dead Band + 1/2 Proportional Band)

Temp Set Point: 70°F Proportional Band: 8°F Dead Band: 2°F

70 71 72 73 74 75

Cool 1 Off

Cool 2 On

Cool 1 On Cool 3 On

Cool 2 Off

Cool 3 Off

Cool 4 Off

Increasing Temperature

Cool 4 On

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As the return air temperature increases Cooling 1, lead compressor unloaded, is activated at 72°F or ½ of the dead band value plus 25% of the cooling control band. If the return air temperature continues to increase Cooling 2, lag compressor unloaded, will activate at 73°F or ½ of the dead band value plus 50% of the cooling control band. If the return air temperature continues to increase Cooling 3, lead compressor unloaded, is activated at 74°F or ½ of the dead band value plus 75% of the cooling control band. If the return air temperature continues to increase Cooling 4, lag compressor loaded, will activate at 75°F or ½ of the dead band value plus 100% of the cooling control band.

When the return air temperature starts to decrease, Cooling 4 is deactivated at 74°F or ½ of the dead band value plus 75% of the cooling control band. If the return air temperature continues to decrease Cooling 3 will be deactivate at 73°F or ½ of the dead band value plus 50% of the cooling control band. If the return air temperature continues to decrease Cooling 2 will be deactivate at 72°F or ½ of the dead band value plus 25% of the cooling control band and Cooling 1 is deactivated at 71°F or 1/2 the dead band value plus 0% of the cooling control band.

Remember the temperature dead band value is used by the control to shift the cooling on/ off operations away from the temperature set point.

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Optional Dual Compressor Digital Scroll Operation

100

1 compressor operation

Switch 2

70 50

PWM

35 20

2 compressor operation

ressor ONSwitch 1 com

Off

Start/ sto

35 700%

In the chart above we are defining the Digital Compressor start and stop at the capacity need and how the compressors load and unload with the PWM from the controller and the unit setting for temperature control.

Note that the Digital Scroll will run continuously while the head is raised and lowered as the need for cooling is required from 10% to 100% and vise versa.

Optional Glycool (Econ-O-Cycle) Cooling

When supplied with the Glycool option, the basic unit is supplied with an additional coil, piping, valve and a Glycol Fluid Sensor (AQ), which is mounted to the unit supply fluid line and serves as control interface in determining the system operation. Selection of the glycool or compressorized operation is controlled by microprocessor using this aquastat to sense the glycol temperature.

The Glycool (Econ-O-Cycle) Cooling program establishes two distinct control bands for cooling control operation. The first band controls the operation of the chilled glycol valve and the second controls the operation of the compressors, either 2-stage or 4-stage.

The microprocessor checks the return air temperature and the entering glycol fluid temperature to determine a cooling capacity. In order to reduce compressor cycling and to prevent chilled glycol valve hunting, Glycool (Econ-o-Cycle) cooling capacity does not become available until the entering chilled glycol fluid

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temperature is at least 8°F below the return air temperature, or 3°F lower than the return air temperature for two consecutive hours.

When the microprocessor decides that the return glycol fluid temperature is cold enough the first cooling band is the modulating valve control method, and the second band, added to the first band, is for the compressors as in the normal 2-Stage or 4-Stage control method. If the chilled glycol fluid temperature is not cold enough the valve control band is replaced by the compressor band. If the chilled glycol cooling capacity is reduced by a rise in the glycol fluid temperature, the control band shrinks proportionally. This allows the compressor band to move down as well. The following shows the Glycool operation at 100% capacity and the Glycool at 50% capacity.

Glycool at 100% Capacity – No Dead Band

Temp Set Point + (1/2 Proportional Band + 1/2 Proportional Band)

Temp Set Point: 70° Proportional Band: 8°

Valve Closed

70 71 72 73 74 75 76 77 78 79

Band 1 Glycool Valve Band 2 Compressors

100% Open

Cool 1 On

Cool 2 On

Increasing Temperature

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Glycool at 50% Capacity – No Dead Band

Temp Set Point + (1/2 Proportional Band + 1/2 Proportional Band)

Temp Set Point: 70° Proportional Band: 8°

Valve Closed

100% Open

Cool 1 On

Cool 2 On

70 71 72 73 74 75 76 77 78 79

Band 1

Band 2 Compressors

Glycool

Valve

Increasing Temperature

Dual Source Cooling

When supplied with the Dual Cooling option, the basic unit is supplied with an additional coil, piping, valve and a Glycol Fluid Sensor (AQ), which is mounted to the unit supply fluid line and serves as control interface in determining the system operation. Selection of the chilled water or compressorized operation is controlled by microprocessor using this aquastat to sense the water temperature.

The Dual Source Cooling program establishes two distinct control bands for cooling control operation in the same method as Glycool. The first band controls the operation of the chilled water valve and the second controls the operation of the compressors, either 2-stage or 4-stage.

The microprocessor checks the return air temperature and the entering chilled water fluid temperature to determine a cooling capacity. The chilled water cooling capacity is considered to be 100% if the entering Chilled Water fluid temperature is 8°F lower than the return air temperature.

When the microprocessor decides that the return chilled water temperature is cold enough the first cooling band is the modulating valve control method, and the second band, added to the first band, is for the compressors as in the normal

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2-Stage or 4-Stage control method. If the chilled water temperature is not cold enough the valve control band is replaced by the compressor band.

Dual Cooling at 100% Capacity – No Dead Band

Temp Set Point + (1/2 Proportional Band + 1/2 Proportional Band)

Temp Set Point: 70° Proportional Band: 8°

Valve Closed

100% Open

Cool 1 On

Cool 2 On

70 71 72 73 74 75 76 77 78 79

Band 1 Chilled Water

Valvel

Band 2 Compressors

Increasing Temperature

An addition program available with the Dual Cooling option is called Minimum Chilled Water Temperature. This program allows the end user to select the minimum chilled water temperature that permits simultaneous operation of the chilled water control and compressor control. When the supply chilled water temperature decreases to this programmed value ONLY the chilled water valve control is operational, the compressors are locked out.

Staged Electric Reheat

The basic temperature heating control band is established at the temperature set point with the length equal to ½ of the programmed temperature proportional band divided by the number of reheat stages.

The Liebert DS units are supplied with three (3) reheat stages (elements), each stage is rated at 1/3 of the unit capacity. The three (3) stages will operate in an on/ off configuration to reheat the unit discharge air as it enters the space.

The temperature controller activates the first electric heating stage when the return air temperature decreases to 33% of the heating proportional band. The second electric heating stage activates when the return air temperature decreases to 66%

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of the heating proportional band. The third electric heating stage activates when the return air temperature decreases to 100% of the heating proportional band.

The temperature controller deactivates the third heating stage when the return air temperature increases to 66% of the heating proportional control band value. The second heating is deactivated when the return air temperature increases to 33% of the heating proportional control band value. The first heating stage is deactivated when the return air temperature increases to the temperature set point value or 0% of the heating proportional control band value.

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3 Stage Electric Reheat – No Dead Band

Note: in the above example that the control band begins at the 70°F temperature set point and has a length of 4°F, which is ½ of the programmed temperature proportional band value.

As the return air temperature decreases Reheat 1 is activated at 68.7°F or 33% of the heating control band. If the return air temperature continues to decrease Reheat 2 will activate at 67.4°F or 66% of the heating control band. If the return air temperature continues to decrease Reheat 3 will activate at 66°F or 100% of the heating control band.

When the return air temperature starts to increase, Reheat 3 is deactivated at

67.4°F or 66% of the heating control band, Reheat 2 is deactivated at 68.7°F or 33% of the heating control band and Reheat 1 is deactivated at the temperature set point of 70°F or 0% of the heating control band.

Temp Set Point: 70°F Proportional Band: 8°F

Decreasing Temperature

Temp Set Point - (1/2 Proportional Band)

Reheat 1 On

Reheat 2 On

Reheat 3 On

65 66 67 68 69 70

Reheat 3 Off

Reheat 2 Off

Reheat 1 Off

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3 Stage Electric Reheat – With Dead Band

As the return air temperature decreases Reheat 1 is activated at 67.7°F or ½ of the dead band value plus 33% of the heating control band. If the return air temperature continues to decrease Reheat 2 will activate at 66.4°F or ½ of the dead band value plus 66% of the heating control band. If the return air temperature continues to decrease Reheat 3 will activate at 65°F or ½ of the dead band value plus 100% of the heating control band.

When the return air temperature starts to increase, Reheat 3 is deactivated at

66.4°F or ½ of the dead band value plus 66% of the heating control band. Reheat 2 is deactivated at 67.7°F or ½ of the dead band value plus 33% of the heating control band. Reheat 1 is deactivated at 69°F or ½ of the dead band value plus 0% of the heating control band.

Remember the temperature dead band value is used by the control to shift the cooling on/ off operations away from the temperature set point.

Temp Set Point - (1/2 Dead Band + 1/2 Proportional Band)

Temp Set Point: 70°F Proportional Band: 8°F Dead Band: 2°F

Reheat 2 On

Reheat 3 On

65 66 67 68 69 70

Reheat 3 Off

Decreasing Temperature

Reheat 1 On

Reheat 2 Off

Reheat 1 Off

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Humidity Control

Humidification and/ or Dehumidification Required, in Percent (%)

The humidity control programs for the iCOM microprocessor is based on a calculated percent (%RH) requirement for humidification and/ or dehumidification. This percent (%RH) requirement is determined by the control type (algorithm) selected by the user.

The two (2) user selectable humidity control programs are:

• Absolute Humidity, grains of moisture in the air

• Relative Humidity (%RH)

Humidity Control Program Types

Absolute (predictive) Humidity Control – Factory Default Setting

Absolute (predictive) humidity control is based on the moisture content in the return air. The iCOM microprocessor control automatically adjusts the humidity

control as the return air temperature deviates from the programmed temperature set point. This calculation converts the return temperature and humidity values to a moisture content value defined as either grains per cubic foot or grains per pound. This recalculated content value is compared to the content control band that is determined by the:

• Programmed temperature set point

• Programmed humidity set point in %RH

• Programmed humidity proportional band in %RH

This automatic adjustment results in a predictive humidity control response. With absolute humidity control, the humidity control program is automatically adjusted approximately 2% RH for each degree difference between the return air temperature and the temperature set point. Note the following example:

Temperature

Set Point

Humidity Set Point

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Proportional

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Humidity

Band = 6%

Content Level

Grains per LB.

75°F 75°F

The Absolute (Predictive) Humidity Control Flowchart shows what the program is doing and why.

Programmed Values Temp Set Point Humidity Set Point Humidit

The program can be analyzed using the Moisture Content Charts supplied in a later chapter of this manual. It is important to remember that the display provides the humidity value in %RH, not moisture content. The moisture content (grains) values are used only in the internal control program calculation. The LCD display will indicate relative humidity percentage for both methods of control. If the absolute method of control is selected, the adjusted humidity reading will be shown.

When utilizing the absolute (predictive) humidity control program feature, the humidity level is automatically adjusted ~ 2% RH for each degree difference between the return air temperature and the temperature set point.

When absolute humidity control is used, over dehumidification is avoided in the space. When overcooling occurs, causing an increase in the relative humidity reading, the humidity control program “predicts” what the RH will be when the dehumidification cycle ends and the temperature returns to the programmed set point. This allows the dehumidification cycle to end at the proper time.

Proportional Band

Present Room Temperature Room Humidity

50% +3% 59.2 50% -3% 52.5

Calculates Band

Calculates Content

Humidif

Dehumidif

Compares Moisture Content to Band and Makes Decision

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Relative Humidity Control

Relative humidity control is based on the humidity content in the return air. The iCOM microprocessor control determines the unit humidification/ dehumidification

operation by comparing the return air humidity value to the control band that is determined by the:

• Programmed humidity set point in %RH

• Programmed humidity proportional band in %RH

Operations and Charts

The humidity proportional control band value is divided into two parts: the humidity set point plus ½ of the programmed humidity proportional band for dehumidification operation and the humidity set point minus ½ of the programmed humidity proportional band for humidification operation.

A humidity dead band can also be programmed into the control to shift the humidification and/ or dehumidification on/ off operations away from the humidity set point.

This programmed humidity dead band value is divided into two parts: the humidity set point plus ½ of the dead band – no dehumidification operation and the humidity set point minus ½ of the band – no humidification operation.

The humidity set point range is adjustable from 1 – 80% RH in increments of 1% RH. The humidity proportional band range is adjustable from 1 – 20% RH in increments of 1% RH. The humidity dead band range is adjustable from 0 – 50% RH in increments of 1% RH.

Humidifier Operation

The Relative Humidity control program is used to illustrate the humidification operation in the following examples. The basic humidification control band is established at the humidity set point with the length equal to ½ of the programmed humidity proportional band value. The Liebert DS units are supplied with an infrared humidifier rated at the unit capacity.

The humidity controller activates the infrared humidifier when the return air humidity level decreases to 100% of the humidity proportional band. The humidifier makeup water solenoid valve also operates during humidification operation based on a timing sequence.

The humidity controller deactivates the infrared humidifier and makeup water solenoid valve when the return air humidity level increases to 50% of the humidity proportional control band value.

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Infrared Humidification – No Dead Band

Note: in the above example that the control band begins at the 50% humidity set point and has a length of 4%, which is ½ of the programmed humidity proportional band value.

As the return air humidity decreases the infrared humidifier is activated at 46%RH or 100% of the humidification control band. When the return air humidity starts to increase, the infrared humidifier is deactivated at 48%RH or 50% of the humidification control band.

Humid Set Point: 50% Proportional Band: 8%

Humidity Set Point - (1/2 Proportional Band)

Humidification On

45 46 47 48 49 50

Humidification Off

Decreasing Humidity

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Infrared Humidification – With Dead Band

Note: in the above example that the control band begins at the 50% humidity set point and has a length of 5%, which is ½ of the programmed dead band value plus ½ of the programmed humidity proportional band value.

As the return air humidity decreases the infrared humidifier is activated at 45%RH or ½ of the dead band value plus 100% of the humidification control band. When the return air humidity starts to increase, the infrared humidifier is deactivated at 47%RH or ½ of the dead band value plus 50% of the humidification control band.

Humidity Set Point - (1/2 Dead Band + 1/2 Proportional Band)

Humid Set Point: 50% Proportional Band: 8% Dead Band: 2%

Humidification On

45 46 47 48 49 50

Humidification Off

Increasing Temperature

Autoflush Control for Infrared Large (IFL) or Small (IFS) Pans

The Autoflush Water-Level Control software program is an integral part of the infrared humidifier system. The program automatically controls a water makeup valve to maintain the proper water level in the humidifier pan during operation. When a call for humidification exists, the program performs a series of checks.

The first check to see how long the infrared humidifier has been off. If the off time is equal to or greater than the programmed value (factory default is 15 hours), it is assumed that the pan is dry and a program called pre-fill is initiated to add water to the pan. During the pre-fill operation the infrared lamps are inactive. The pre-fill time is programmable with an adjustable range of 1 to 120 seconds for either pan size. The factory default for a large (IFL) pan is 60 seconds and for a small (IFS) pan is 30 seconds.

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If the off time is less than 15 hours (or user programmed value) the pre-fill program is bypassed and the infrared lamps and water valve are activated at the same time to fill the pan to the proper water level and initiate humidification.

During normal infrared humidification operation the water makeup valve is periodically closed (no pan fill) and opened (pan fill) based on a timing sequence to allow for the evaporation of water from the pan (see flow chart below).

With the humidifier water flush rate set at the factory default value of 150% the water makeup valve will open for 7 minutes of fill time with an off time of 45 seconds between fill cycles for a small pan. For a large pan water makeup valve will open for 10 minutes of fill time with an off time of 80 seconds between fill cycles. The user can modify the percentage from 110% to a maximum of 500% in 1% increments.

Autoflush Control Flow Chart

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Call for Humidification

On in last 15 Hours?

YES

HMV Pre-fill 30 sec – small pan 60 sec – large pan

HMV and Lamps on 4 min – small pan 7 min – large pan

Humidification Lamps only 8 min – small pan 10 min

large pan

Refill 110% to 500%

Notes:

1. IFL: Infra-red Large and IFS: Infra-red Small

2. Last 15 Hours is programmable from 1-120hours.

3. Pre-fill time is programmable from 1-120 seconds on Large or Small pans

4. Normal Fill is programmable from 1-120 seconds

5. Refill is programmable in 1% increments

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Dehumidification Operation

The Relative Humidity control program is used to illustrate the dehumidification operation in the following examples. The basic dehumidification control band is established at the humidity set point with the length equal to ½ of the programmed humidity proportional band value.

The humidity controller activates dehumidification operation when the return air humidity level increases to 100% of the humidity proportional band. The humidity controller deactivates dehumidification operation when the return air humidity level decreases to 0% of the humidity proportional control band value.

1-Stage Dehumidification, Compressorized Direct Expansion (DX) Systems

The Liebert DS unit is supplied with two (2) compressors. Under normal operation, the lead compressor is used for sensible cooling and the lag compressor is used for either additional cooling or for dehumidification control. The optional hot gas bypass solenoid valve is de-energized during dehumidification.

If single compressor dehumidification is selected, the lag compressor is activated by the humidity controller when the return air humidity level increases to 100% of the humidity proportional band.

The humidity controller deactivates the lag compressor when the return air humidity level decreases to 50% of the humidity proportional control band value.

1 Stage Compressorized Dehumidification – No Dead Band

Humid Set Point: 50% Proportional Band: 8%

Humidity Set Point - (1/2 Proportional Band)

Dehumidification On

50 51 52 53 54 55

Dehumidification Off

Increasing Humidity

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Note: in the above example that the control band begins at the 50% humidity set point and has a length of 4%, which is ½ of the programmed humidity proportional band value.

As the return air humidity increases, dehumidification operation is activated at 54%RH or 100% of the dehumidification control band. When the return air humidity starts to decrease, dehumidification operation is deactivated at 52%RH or 50% of the humidity proportional control band.

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1 Stage Compressorized Dehumidification – With Dead Band

Note: in the above example that the control band begins at the 50% humidity set point and has a length of 5%, which is ½ of the programmed dead band value plus ½ of the programmed proportional band value.

As the return air humidity increases, dehumidification operation is activated at 55% RH or ½ of the dead band value plus 100% of the dehumidification control band. When the return air humidity starts to decrease, dehumidification operation is deactivated at 53%RH or ½ of the dead band value plus 50% of the humidity proportional control band.

Humidity Set Point - (1/2 Dead Band +1/2 Proportional Band)

Humid Set Point: 50% Proportional Band: 8% Dead Band: 2%

Dehumidification On

50 51 52 53 54 55

Dehumidification Off

Increasing Humidity

2-Stage Dehumidification, Compressorized Direct Expansion (DX) Systems

The basic dehumidification control band is established at the humidity set point with the length equal to ½ of the programmed humidity proportional band value. When 2 stage dehumidification is selected, the controller works as follows.

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The humidity controller activates the first stage of dehumidification operation when the return air humidity level increases to 50% of the humidity proportional band. The second stage of dehumidification is activated when the return air humidity level increases to 100% of the humidity proportional band.

The humidity controller deactivates the second stage of dehumidification operation when the return air humidity level decreases to 50% of the humidity proportional control band value. The first stage of dehumidification is deactivated when the return air humidity level decreases to the humidity set point of 50% or 0% of the humidity proportional band.

If the compressors have unloading capability (4-stage cooling), then the compressors are activated in the fully loaded condition for each stage of dehumidification.

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2 Stage Compressorized Dehumidification – No Dead Band

Note: in the above example that the control band begins at the 50% humidity set point and has a length of 4%, which is ½ of the programmed humidity proportional band value.

As the return air humidity level increases, first stage dehumidification operation is activated at 52%RH or 50% of the dehumidification control band. If the return air humidity level continues to increase the second dehumidification stage actives at 54%RH, which 100% of the dehumidification control band.

Humid Set Point: 50% Proportional Band: 8%

Humidity Set Point + (1/2 Proportional Band)

Dehumid Stage 1 On

50 51 52 53 54 55

Dehumid Stage 1 Off

Dehumid Stage 2 Off

Dehumid Stage 2 On

Increasing Humidity

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When the return air humidity level decreases to 52%RH or 50% of the dehumidification control band the second dehumidification stage is deactivated. When the return air humidity level decreases to the humidity set point of 50% or 0% of the humidity proportional band the first dehumidification stage is deactivated.

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2 Stage Compressorized Dehumidification – With Dead Band

As the return air humidity level increases, first stage dehumidification operation is activated at 53%RH or ½ of the programmed dead band value plus 50% of the dehumidification control band. If the return air humidity level continues to increase the second dehumidification stage actives at 54%RH or ½ of the programmed dead value plus 100% of the programmed humidity proportional control band.

When the return air humidity level decreases to 53%RH or ½ of the programmed dead band value plus 50% of the programmed proportional control band the second dehumidification stage is deactivated. When the return humidity level decreases to 51%RH or ½ of the dead band value plus 0% of the programmed proportional control band the first stage dehumidification deactivated.

Humidity Set Point + (1/2 Dead Band +1/2 Proportional Band)

Humid Set Point: 50% Proportional Band: 8%

Dehumid Stage 1 On

50 51 52 53 54 55

Dehumid

Dehumid Stage 1 Off

Stage 2 Off

Increasing Humidity

Dehumid Stage 2 On

Reheating during Dehumidification

The Parameter Electric Reheat Enabled defines how the reheats react when the return air temperature decreases below the temperature set point during the

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dehumidification process. The end user can choose to select from the following selections:

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Parameter Operation

Normal

Delayed

No electric reheat allowed during compressorized dehumidification operation.

Electric reheat operates as normal. A decrease in return air temperature below set point will start reheats as described previously in his chapter.

No low limit reached / low limit reset: heaters disabled. Only one of two compressors operating in dehum or low limit 1 reached: heaters enabled

Normal or Delayed Reheat (2-Stage Dehumidification Only)

When normal reheat (factory default) control is selected, the unit reheats are not disabled during dehumidification, even if both compressors are operating. As the return air temperature decreases below the temperature set point the reheats will stage on and off as described earlier in this chapter.

If delayed reheat is selected and both compressors are operating for dehumidification control, the reheats are disabled until only one compressor is required. If, during reheat disable, the return air temperature decreases far enough below the temperature set point to require 150% total available reheat capacity, then dehumidification is disabled and reheats are activated.

When the return temperature raises to the point where reheat is no longer required, then dehumidification operation is re-enabled. However, if the amount of time that both compressors were operating prior to being disabled by the low temperature condition was less than 10 minutes, then only one compressor is allowed to operate for subsequent dehumidification requirements. This prevents excessive system cycling, which can occur if the room heat load is small. Once the requirement for dehumidification is no longer present, then both compressors are enabled.

Caution:

Dehumidification with normal reheat allows for operating both compressors and reheats simultaneously. It is very important that the electrical service to the unit be sized and wired for this option if selected. If not sized properly the electrical service could experience nuisance trips and or possible damage to building circuit breakers (or Fuses) and wiring.

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Additional Programs

Start

The unit fan is activated. The unit can be switched on/ off from 2 inputs:

1. Remote on/ off input (RSD – Remote Shutdown Device)

2. Display button

Note: Switches 1 and 2 are in series; the unit will start only if both switches are in the on position. If either switch is in the off position the unit will stop

Remon/off

Display button(s)

Auto restart

When there is a power outage the unit will provide an automatic restart on power restoration when programmed. The unit will start and the loads will sequence on with the Fan first, the first Cooling need and so forth until all loads are on as the room requirement demands.

The Unit Auto Restart Sequence (customer programmable) takes place. Each unit will restart by this program, however, with a network of units, the start loop will start the next unit at each individual time when elapsed beginning with unit num

ber

ID #1. The unit control start sequence will start at this point as well.

Power on

Unit 1

Unit 2

Unit 3

Unit 4

Autorestart

Boot seque nce

Autorestart

Control 1

Autorestart

Control 2

Autorestart

Control 3

Control 4

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Fan Alarm / Fan settings

The fan operation is controlled by two (2) digital devices: the Loss of Airflow differential pressure switch and the Main fan Overload motor protection. The time delay at the unit start is always 5 seconds shorter than the control delay.

High Pressure Cutout

The control uses high head lockout functionality. If one compressor trips or is locked out on high head, the other compressor turns on when the space temperature increases 1°F. Pressing the alarm button on the display twice can reset high head Alarm. A lockout condition occurs on the third trip and must be

reset by turning the main power switch to off then back on

Suction Pressure Transducer

The suction pressure transducer operation is only on air conditioning products (not chiller applications). Transducer measurements are made at least once every 1 second. With all other operating times for all compressors, additional measurements, shall be taken based on operation “at limit conditions” for 5

seconds and shall not include readings taken during Pumpdown or Winter Start Kit (WSK) timeout

Call for Cooling

The following applies for both R22 and R407C systems and applies to all compressor types. The call for cooling opens the Liquid Line Solenoid Valve (LLSV). Note: on units with Digital Scroll Compressors the unloader is energized

0.1 second before the compressor contactor is energized. On air-cooled units with fan speed type condenser (FSC) the low pressure start threshold is 35psiG (50psiA). On air-cooled units with lee-temp control (LT) and all fluid cooled

units the low-pressure start threshold is 60psiG (75psiA).

All compressorized units use the following start sequence:

Open LLSV, if WSK is set to 0, wait for suction pressure to reach setting, then start compressor and freeze protection timer.

If WSK is set greater than 0, operate the compressor for the WSK override time and monitor suction transducer value.

If pressure is achieved the compressor is allowed to operate, and the freeze protection timer is started.

If pressure is not achieved, turn compressor off and leave LLSV open. If pressure is achieved within next 30 seconds the compressor is allowed to

operate, and the freeze protection timer is started.

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The Startup and Freeze Protection Program

The sequence for the call for cooling with the program features is as follows: The need for cooling is defined by the control setting for the temperature setpoint,

proportional band, and deadband (if used). At this point the Winter Start Kit (WSK) time delay is the wait period for the compressor to run without the indication of the low-pressure condition (also known as LP bypass). The WSK time delay is programmable with a range of 0 - 5 minutes. If the LP switch setting is achieved in this time then full cooling is in process with the Freeze Protection (FP) now watching the LP for an additional 10 minutes (fixed). If the LP remains closed the cooling process continues.

If the WSK is not made in the set time period the cooling process stops and waits an additional 5 minutes with the compressor off (no pumpdown). The liquid line solenoid valve will remain open during this time period. If the LP switch is made the control will now advance and wait for the freeze protection time delay as stated as above. If the LP switch does not prove in the WSK time delay period plus the 5 minute wait period, the compressor is locked off and the Low Suction Pressure Alarm will activate. A power off/ on reset is required to reset the cooling function.

If the WSK is made and the control is in the 10 minute Freeze Protection (FP) wait time period and this function does not prove the LP the control will go into additional 10 minute wait (fixed), with the compressor off (no pumpdown) and the liquid line solenoid valve to remain open. If the freeze protection does not make

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during the second time frame the cooling process locks off and will require a power off sequence.

Next Maintenance Calculation

Foreword

The next maintenance calculation will help run the Liebert Environmental unit in an optimum way, to ensure minimum components stress resulting in increased reliability.

Calculation of next Maintenance Parameters

The following components are included in the calculation individually:

• Fan(s)

• Compressor 1

• Compressor 2

• Electric Heaters

• Humidifier

For each individual component the next maintenance will be calculated from following parameters:

1. Standard service interval (1, 2, 4 or 6 times a year, to be programmed).

2. Working hours (counted).

3. Number of starts (counted).

4. Average running time (calculated).

5. Optimum number of starts per hour (to be programmed).

6. Maximum number of starts per hour (to be programmed).

7. Maximum bonus to enlarge time to next maintenance (to be programmed).

8. Maximum penalty to reduce time to next maintenance (to be programmed).

The Maintenance Calculation is done as follows:

Basic: maintenance frequency (1). The control counts the working hours of the component, as well as the number of starts.

The working hours and the number of starts are compared with the programmed optimum / maximum starts per hour. This results in “Wellness Factor”.

This factor, in accordance to the service interval, will add a “Bonus” to increase the time before the next maintenance, or will add a “Penalty” to decrease the time before the next maintenance. In simple words: If a component starts very often, the time to next maintenance will be decreased, if it starts rarely, the time to next maintenance will be increased.

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The control always takes the component with the most on/ off (cycling) as the reference component, which asking for the nearest maintenance (example: if the fan runs continuously, but the compressor switches on/off all the time, the next maintenance will be calculated from the compressor).

Alarms or warnings (like clogged filter, high or low pressure, fans alarm etc.) will decrease the time to next maintenance immediately to 0. If the alarm was reset, the original situation will be displayed again, but the alarm will be counted in the diagnostics window.

The display’s main window provides information about the next maintenance: a bar graph (graphical display screen) will fill in, as the next maintenance gets closer (the width of the graph equals to the standard maintenance Interval (1, 2, 4 or 6 times a year). The date of the next maintenance is also displayed.

Parameters for next Maintenance Calculation:

General Maintenance Settings:

Maintenance Frequency: can be set at 1, 2, 4 or 6 times a year. “NO” means

the maintenance calculation program is disabled. Maximum Bonus: this value increases the time to next maintenance with the set

value, if all components run in optimum way (number of starts, average running time).

Maximum Penalty: this value decreases the time to next maintenance with the set value, if some components run in non-optimum way (number of starts, average running time).

Last Maintenance: this date can be will be set by the calculations and the service-engineer and others to view.

Service-Engineer: name can be added and edited. Reset: puts all counters of all components (fans, compressors, ect.) to 0, and

starts new maintenance calculation (always reset after maintenance is completed).

Fans / Heaters / Humidifier Settings / Compressor 1 /2 Settings

Number of starts and Working hours: counted from the last maintenance. Total

working hours can be read in the standard working hours window (customer window).

Average Working Hours: calculated by the number of starts and working hours of each component.

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Starts per Day Optimum: the number of individual component starts that is considered as good or optimum. To be set by Service Engineer.

Starts per Day Worst: the number of individual component starts that is considered as “hunting” or worst case. To be set by Service Engineer.

Number of Alarms: counts the number of alarms occurring between service intervals.

Actual Bonus: calculated from “number of starts” and “average working time” values. The result can be positive (for a bonus) or negative (for a penalty). This value influences the time remaining to the next maintenance.

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Shared Parameters an understanding

If we have multiple units in the same room (zone) they will need to communicate with each other to avoid opposite operational functions. This will prevent the cooling and heating functions from operating at the same time on different units. This condition called “fighting “ often exists in the room due to imbalanced loads and the crossing of airflow conditions. This is also considered when using the Lead/ Lag and Cascade functions.

When a system is setup the parameters are shared by all units. The unit selected as the Lead Unit (#1 unit) is used to program the system, if program parameters are not set in this unit they will be ignored. This is true for all of the active units in the system. However, if a unit in the system is not active it will be ignored until it is active and the parameters will be shared within 2 minutes of activation.

Shared Temperature and Humidity parameters example:

Two units share the master Temperature Control (1/2) Proportional Band Setting such as 10°F, and then each unit will use the master band divided by 2 (units) or 5°F proportional bands. To avoid the cooling hunting process or compressor cycling too quickly, the primary temperature proportional band needs to be set wide enough to compensate for the number of units in the system setup. Note that shared parameters are not used on single unit applications.

Heating, humidification, and dehumidification will follow the same example with each function starting in each unit one after the other or in sequence.

In Chilled Water units all valves operate are in parallel but this operation may be overridden by the setting and use of the Supply Limit sensor. This parameter is controlled by the individual unit. Here we may see uneven valve positioning (operation) in some of the units.

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Freecooling and Dual cooling will operate in the same manner as chilled water with the supervision of the Supply Limit, again showing different valve positions on the units

If in a Freecooling or Dual Cooling unit if the limit of the coil operation is detected (no free cooling or no CW available) the valve will close off and unit will become DX operation in the system.

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Networking and Functions

Unit 2 Unit (U2U) Communications by networking will allow the following functions to be placed into operation when the requirements exist. The user must install the correct hardware and properly program the units for the functionality.

In the iCOM Network the owner may perform the following functions: The Teamwork Mode functions, which allow multiple stages of Cooling/ Heating

and/ or Humidification/ Dehumidification. The ability to prevent the units fighting is included in this feature.

The Lead/ Lag function, which allows one or more units to be set as “Running and Standby” for activation in case of an alarm. This also has the ability to be programmed in a rotation for assurance of functional standbys.

The Cascade function, which allows additional units to be staged on based on the temperature or humidity requirement.

Understanding the iCOM Network setup process:

To setup a system network with the iCOM control requires a complete understanding of the control processes and parameter programming to insure the proper functional operation without incident. To insure the setup is correct and that the operation will function as selected you need to map both the room layout and the unit setup. First, read and record all programmed settings in all of the single units. Second, document the network parameter settings that are needed and identify the numerical order of the units to be networked. The order of the setup process is very important.

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The Basics for Cooling Unit Placement:

Installation instructions are found in the product manuals for the Cooling units. Networking setup should include these additional factors for planning.

• Locations of heat loads in conditioned space.

• Air distribution for cooling.

• Number of operating units versus standby.

The Basics for Hardware:

Multi-unit networking requires the following hardware:

Minimum Network Switch Requirements:

• IEEE 802.3, IEEE 802.3u

• 10/100 Mbps speed

• Multiple RJ-45 ports – one shared RJ45 uplink

CAT 5 patch cables (straight through) in the proper lengths not to exceed 150 ft. maximum length each. One for each board and display added into

the iCOM network. Cable management will apply.

The Basic for Programming:

An IP address number will be used to identify each receiver/ sender of information. (See Computer and Network Terms in Training and Service Manual)

The iCOM Network is a Class C Private Network and will use the 192.168.254.xxx series of static IP address. This has nothing to do with the local building or owner

network. The iCOM Network may only be attached to these networks through a WEB Card or 485 Card using the Liebert Intellislot.

A series of basic rules must be followed to connect and program the units for this private iCOM Network. See the following rules.

1. Small Displays are CAN connections only, programming of single unit

parameters is required.

2. Small Displays CANNOT look at or program other iCOM Network functions.

3. Small Displays may be networked with a CAT 5 crossover cable (2 units).

4. All Large Displays and Control Boards will use a CAT 5 or greater straight

through (patch) cables to connect to the switch.

5. One large Display (Wall Mount) with a separate power adapter may be used

with multiple units (Control Boards and Small Displays) through the network switch.

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6. Each set of unit control boards must be set up individually, then connected to

the network switch and checked before the next board can be setup

6a. Large Displays and Control Boards must each be programmed with a

different IP Address. Example: Display: 192.168.254.001

Example: Control Board: 192.168.254.010

6b. Each Display and Control Board in the iCOM network must have the

same Gateway IP address. Example: Gateway IP: 192.168.254.75

6c. Each Display and Control Board in the iCOM network must have the

same Netmask IP address. Example: Netmask IP = 255.255.255.000

6d. The Unit to Unit (U2U) address must be programmed in the necessary

order for setup. Example: Unit Display: 33 – 64 and Unit Control Board: 1 - 32

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Setting Parameters

Example: 2 Units with Small Display’s All Network parameters are viewed and programmed using the

Service Menu function and by selecting the Network Setup Icon

The following example references menu lines on the Network Setup screen:

Line S802: Number units connected: xx (2) Line S803: Teamwork: xx (No, 1, 2)

Line S804: Control Board IP Address: 192.168.254. xxx (010, 011)

Line S805: Control Board Netmask IP the same for all units Line S806: Control Board Gateway IP the same for all units Line S808: U2U address Control Board #: xx (1-2) Line S810: U2U group #: xx (1)

U2U: CAT5 (Crossover-cable)

Unit No. 1

Unit No. 2

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Example: 2 Units, One Large Display and One Small Display All Network parameters are viewed and programmed using the

Service Menu function and by selecting the Network Setup Icon

The following example references menu lines on the Network Setup screen:

Line S802: Number units connected: xx (2) Line S803: Teamwork: xx (No, 1, 2) Line S804: Large Display Board IP Address: 192.168.254. xxx (001 - 049) Line S804: Control Board IP Address: 192.168.254. xxx (050 - 099) Line S805: Large Display Board Netmask IP: 255.255.255.000 Line S805: Control Board Netmask IP: 255.255.255.000 Line S806: Large Display Board Gateway IP: 192.168.254.255 Line S806: Control Board Gateway IP: 192.168.254.255 Line S808: U2U address Display #: xx (33 - 64) Line S808: U2U address Control Board #: xx (1 - 32) Line S810: U2U group #: xx (1 - 99)

CAT5 (Patch-cable) and (CAN)

Power

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Example: Large Wall Display and Five Units with Small Displays All Network parameters are viewed and programmed using the

Service Menu function and by selecting the Network Setup Icon

The following example references menu lines on the Network Setup screen:

Line S802: Number units connected: xx (01 - 32) Line S803: Teamwork: xx (No, 1, 2) Line S804: Large Display Board IP Address: 192.168.254. xxx (001 - 049) Line S804: Control Board IP Address: 192.168.254. xxx (050 - 099) Line S804: Wall Mount (LBB) IP Address: 192.168.254. xxx (100 - 149) Line S806: Large Display Board Gateway IP: 192.168.254.255 Line S806: Control Board Gateway IP: 192.168.254.255 Line S808: U2U address Display #: xx (33 - 64) Line S808: U2U address Control Board #: xx (01 - 32) Line S810: U2U group #: xx (01 - 99)

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Example: 4 Units in 2 Groups with 2 Large Displays All Network parameters are viewed and programmed using the

Service Menu function and by selecting the Network Setup Icon

The following example references menu lines on the Network Setup screen:

Line S802: Number units connected: xx (01 - 32) Line S803: Teamwork: xx (No, 1, 2) Line S804: Large Display Board IP Address: 192.168.254. xxx (001 - 008) Line S804: Control Board IP Address: 192.168.254. xxx (010 - 080) Line S806: Large Display Board Gateway IP: 192.168.254.xxx (000 – 254) Line S806: Control Board Gateway IP: 192.168.254.xxx (000 – 254) Line S808: U2U address Display #: xx (33 - 64) Line S808: U2U address Control Board #: xx (01 - 32) Line S810: U2U group #: xx (01 - 99)

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Teamwork

Teamwork Modes

Teamwork is the ability to group unit functionality, while connected in a network, to provide the ability to work together as a team and address control functions in three different teamwork modes:

“No” Teamwork

In this mode all units are working independently for control and functionality. No values or sensors are shared. While in this mode units may be setup to provide the Lead/ Lag function and rotation, however, units may not be setup in the Cascade functionality.

Teamwork Mode 1

In this mode unit parameters (system settings) are shared if the system value is set in any of the units, all units will follow with same settings. (See Glossary of Unit and System parameters section).

The return air temperature and humidity sensed by each unit in the network will be averaged and used for control by the lead unit.

The Lead Unit designation #1 and will provide the calculations for the system requirements and will provide the calculated divisions of the proportional band to each of the units to start the required operations. The width of the proportional band in multiple unit configurations is shown as normal, but internally the lead unit (unit #1) sends the requests to the other units and multiplies this width by the number of available units in the program.

To be an available unit for operations in this mode:

a) The unit cannot be in a standby (lead/lag) configuration: all units must be on b) The units in the cascade function are not off or set with alarms functions to

be switch off.

This mode of control will drive all Chilled Water or FreeCooling actuators in parallel for all units operating in the teamwork mode. The individual unit will control its own Dual Cooling switchover functions, the low temperature functions and low discharge air functions.

Teamwork Mode 1 will rotate the lead unit by 1 unit every 24 hours.

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Teamwork Mode 2

In teamwork mode 2 all system parameters are shared equally as in teamwork mode 1. The lead unit will define the temperature and humidity averages for the operational needs if there is a request for cooling, heating, dehumidification or humidification.

If there is a temperature control request because of a need for either cooling or heating (determined by highest or lowest temperature of all the units), teamwork mode 2 activates all of the connected units. Each unit will operate in the cooling or heating mode using their individual temperature control settings. If in the cooling mode the heating function is disabled in all units. If in the heating mode the cooling function is disabled in all units.

If there is a humidity control request because of a need for either humidification or dehumidification (determined by highest or lowest humidity of all the units), teamwork mode 2 activates all of the connected units. Each unit will operate in the humidification or dehumidification mode using their individual humidity control settings. If in the humidification mode the dehumidification function is disabled in all units. If in the dehumidification mode the humidification function is disabled in all units.

Teamwork Mode 2 does not allow unit rotation (lead/ lag), unbalanced unit working hours are to be expected.

Unit Lead/ Lag or Running/ Standby Function

This program will allow the user to select the multi-unit function of Lead and Lag, or as sometimes stated Running and Standby, by selecting the number of running and standby units to provide the redundancy needed in the space.

Typical Lead/ Lag (Running/ Standby) Function

The lead/ lag operational sequence has a lead (running) unit operating and an alarm becomes active (selected by alarm programming). The active alarm in the lead unit will cause the first lag (standby) unit to active and maintain the space conditions. If multiple units are selected as lag (standby) the units will continue to rotate on active alarms as long as a lag unit is available. If there are no lag (standby) units left in the sequence the first failed will restart (if not in a critical alarm state i.e. fan overload, etc).

Note: The unit with the active alarm will operate in the fan only mode for 3 minutes before going into a standby mode to stabilize conditions, then it will turn off.

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The Lead/ Lag function may be used in the either the No Teamwork Mode, in Teamwork 1 Mode and in Teamwork 2 Mode. One or more units can be defined as lag (standby), the normal status of the lag (standby) unit(s) is off.

The lag or standby function can be performed as a daily rotation (setting the time), weekly rotation (setting the day of the week and time) or as a monthly rotation. The units will rotate based on the programmed number of units:

Example A: if the rotation is set in the “Rotate by 1” parameter, the standby units will rotate from 1 to 2 or 2 to 3 or 3 to 4 or 4 to1 in a basic 4 unit configuration.

Example B: if the rotation is set in the “Rotate by 2” parameter, the standby units will rotate from 1 - 2 to 3 - 4 or 3 - 4 to 1 - 2 in a basic 4 unit configuration.

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Standby & Cascade

This program function will activate the lag (standby) unit(s) when an active alarm in a running unit is detected. This program parameter will also provide for unit staging. With an increase or decrease in either the temperature and/ or humidity conditions is sensed in the operating units the additional standby unit(s) will be activated to aid in the control of the space requirements.

The Cascade function operates in Teamwork Mode 1 only. The Cascaded units are not part of the system temperature and humidity average.

Settings are: Cascade Active Yes/ No

Cascade Cool/ Heat and Humid./ Dehumid. Yes/ No Cascade for Cooling and Heating Temp Cascade for Cooling only Cool

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Notes:

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Chapter 2

Programming Functions

The standard iCOM control is supplied with a front panel mounted small display screen display which features a 128 x 64 dot matrix graphics. The display provides both descriptive text readouts and two (2) menu icons. The optional large screen display features a 320 x 240 dot matrix graphic display that shows user and service icons as well as descriptive text and graphics. The information provided visually on either of these displays is: room temperature and humidity, temperature and humidity set points, alarm status and settings, event histories and the current time. All programming functions will be done through the supplied display.

Small Graphic Display with Panel Mount Bezel

Optional Large Graphic

Display with Panel Mount Bezel

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iCOM Display Components and Functions

The large display is shown for reference. The keypad and LEDs are identical on all displays.

Liquid Crystal display

LED Status Indicators Top LED is red or flashing red - alarm, Bottom LED is amber (power on) or green (unit on) Keypad

iCOM Keyboard Layout:

The iCOM control screen displays text and icons for monitoring and programming your Liebert unit and/ or network of units. The number of icons and the amount of text shown depends upon the display type supplied on your unit. From the default menu, the user menu may be accessed by pressing the enter key. When the user selects an icon the various submenus, set points, status, thresholds and service information is displayed. The following defines the various keyboard icons and functions.

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iCOM Keyboard Layout:

Icon Key Name Function

On/ Off Key Controls the operation state of the unit.

Alarm Key Silences the audible alarm.

Help Key Accesses the integrated help menus.

ESCape Key Returns to the previous display.

Enter Key Confirms all selections, icons and text.

Increase Key

(Up Arrow)

Decrease Key

(Down Arrow)

Left Arrow Key

Right Arrow

Key

Upper LED

Lower LED

Moves upward through the menu or increases the value of the selected parameter.

Moves downward through the menu or decreases the value of the selected parameter.

Navigates through text and selections of the display.

Blinking Red: Active, unacknowledged alarm exists.

Solid Red: Active, acknowledged alarm exists. Amber: Power available to the unit, unit NOT

operating. Green: Power available to the unit, unit is

operating.

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iCOM Display Symbols/ Icons

The iCOM programming functions are separated into three (3) basic menus:

fan compressor freecooling maintenance

hot water el. heaters dehum hum

horn

• User Menu

• Service Menu

• Advanced Menu

When the desired icon has been selected, press the enter key. If the selected menu item has submenus, they are now revealed. If there are no submenus, the function or setting or command level text is displayed. User and Service menu settings are readable without a password, changing the programmed values requires a password. When a password is required to perform a programming

function, the iCOM displays a password prompt. Advanced menu setting requires a password to read and program.

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Programming Functions

Status Display

The unit display will show the unit operational mode(s), return air temperature/ humidity readings and if active present alarm conditions. The end user can select from two (2) display types, graphical or simple.

System View Screen Graphic Unit View Screen Simple

The Large and Small Display’s have the ability to present information in two formats; the Graphic format will show the set points and/or the actual values of the return air temperature and humidity readings. The operational functions of the components are displayed with an icon and a bar graph to indicate to amount of the required function. The bottom of the screen will indicate date, time, on/off status and events. The message area below will provide additional information and provide some basic navigation help. The Simple format will reduce the amount of graphics displayed and offers a not so busy display of the same information. The displays will provide the System and Unit views

The end user can also select from dark background with white text or light background with dark text.

Graphic Screen with reversed Contrast

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Menu Screens ICON Symbols

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Menu Parameters Names

Level 1: User Level 2: Service Level 3: Advanced

Readable w/o password

PW required to program 1 Setpoints Setpoints Factory Settings 2 Spare Parts List Unit Diary 3 Events Log/ Status Report Standby Settings/ Lead-Lag 4 Graphics Maintenance/ Wellness Settings 5 View Network Diagnostics/ Service Mode 6 Set Alarms Set Alarms 7 8 Change Passwords 9 Various Sensors Sensor Calibration/ Sewtup

Readable w/o password PW required to program

PW required to read or program

11 Display Setup System/ Network Setup 12 Total Run Hours Options Setup

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User Menu Icons and Descriptions:

Icon Name Descriptions

°C/ °F

% RH

SET

EVENT

LOG

Set Points

Spare Parts

List

Event Log

Graphic Data

Record

View Network

Set Alarms

To view and change temperature and humidity set points

Displays the spare parts list of the unit

Contains a log of the last 400 events

Displays the temperature and humidity graphs

Shows the status of all connected units

Allows the enabling, disabling and setting of the alarm parameters

Available

Display

Small and

Large

Small and

Large

Small and

Large

Small and

Large

Sensor Data

Display Setup

Total Run

Hours

Sleep Mode

Service

Contacts

Shows readings for the standard and optional sensors

Change the settings for display, language, time and simple or graphic display

Records the run time of all components and allows for setting the limits on run time

Allows for setback programming for non-peak operation

Contains key contact information for local service, including names and phone numbers

Small and

Large

Small and

Large

Small and

Large

Small and

Large

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Control Training and Service Manual

Service Menu Icons and Descriptions:

Icon Name Descriptions

°C/ °F % RH

SET

Set Points

Unit Diary

Standby Settings

Maintenance/

Wellness

Settings

Diagnostic/

Service Mode

To view and change temperature and humidity set points

Is a notepad containing notes from the service person or customer

Programs lead/ lag setup when multiple units are connected together

Allows programming of the maintenance interval reminder, maintenance messages, number of unit starts and stops, time since last maintenance

Allows for troubleshooting, manual mode and viewing of the analog and digital inputs

Available

Display

Small and

Large

Small and

Large

Small and

Large

Small and

Large

Set Alarms

Sensor

Calibration/

Setup

System/

Network Setup

Options Setup

Service

Contacts

Allows the enabling, disabling and setting of the alarm parameters

Allows for the calibration of the various sensors

Allows for setup and unit-2-unit communication for multiple units

Allows for the setup of component operation

Contains key contact information for local service, including names and phone numbers

Small and

Large

Small and

Large

Small and

Large

Small and

Large

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Controls Training and Service Manual

Advanced Menu Icons and Descriptions:

Icon Name Descriptions

Factory

Settings

Change

Passwords

Factory configuration files. Do

Not Change Settings Consult the Factory First

Allows the user to change the various passwords

Display

Small and

Large

Small and

Large

Menu Parameters

All of the various parameters and program ranges are shown in tables located in this chapter. The following sections highlight the various parameters and

programs in the iCOM control.

User Menu Parameters

The User menu displays the various unit operating values and status icons. The factory default password to access the user menu items for programming is “149”. The User Menu selections include the following choices in the order shown:

Available

• Set Point Parameters

• Spare Part List

• Event Log

• Graphics Log Parameters

• View Network Parameters

• Set Alarm Parameters

• Sensor Parameters

• Active Alarms

• Display Setup Parameters

• Total Run Hours

• Sleep Mode Timer Parameters

• Service Contacts Information

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User Menu: Set Point Parameters U100 series

Menu Line Parameter Default Range

U101 Password - U102 Temperature Setpoint 73ºF 41 - 104ºF U103 Humidity Setpoint 50% 1 – 80% U104 Humidity Control Type Yes Yes or No U105 Supply Limit Disabled Disabled or Enabled U106 Supply Limit Temp Value

41°F 41 - 77°F U107 U108 U109 U110 U111

User Menu: Spare Parts List, Large Display Only

Parameter

Unit spare parts list

User Menu: Event Log

Parameter

Stores the last 400 events (messages, warnings and

alarms a that have occurred

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User Menu: Graphics Parameters

Parameter Default Range

System Temperature Time Scale 24 Hours

8, 32 min or 1, 12, 24 hours

or 2, 4, 8, 16 days

System Temperature Graph Height 9ºF ±36ºF System Humidity Time Scale 24 Hours

8, 32 min or 1, 12, 24 hours

or 2, 4, 8, 16 days

System Humidity Graph Height 10% ±20% Unit Temperature Time Scale 24 Hours

8, 32 min or 1, 12, 24 hours

or 2, 4, 8, 16 days

Unit Temperature Graph Height 9ºF ±36ºF Unit Humidity Time Scale 24 Hours

8, 32 min or 1, 12, 24 hours

or 2, 4, 8, 16 days

Unit humidity Graph Height 10% ±20%

User Menu: View Network Parameters

Parameter

User to select and view status of all units connected

together (only Large Display)

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User Menu: Set Alarm Parameters U200 series

Menu Line Parameter Default Range

U201 Password - U202 Return Sensor Alarms Enabled Enabled or Disabled U203 High Return Temperature 80ºF 33 - 210ºF U204 Low Return Temperature 60ºF 33 - 210ºF U205 High Return Humidity 60% 1 – 99% U206 Low Return Humidity 40% 1 – 99% U207 Sensor A Alarms Disabled Disabled or Enabled U208 High Temperature Sensor A 90ºF 33 - 210ºF U209 Low Temperature Sensor A 55ºF 33 - 210ºF U210 High Humidity Sensor A 70% 1 - 99% U211 Low Humidity Sensor A 30% 1 - 99%

User Menu: Sensor Data U300 series: Page 1 of 2

Menu Line Parameter Range

U301 Actual Temperature Setpoint 41 – 104ºF U302 Actual Humidity Setpoint 20 – 80% U303 Optional Sensor A Temperature 32 - 122ºF U304 Optional Sensor A Humidity 20 – 80% U305 Optional Sensor B Temperature 32 - 122ºF U306 Optional Sensor B Humidity 20 – 80% U307 Optional Sensor C Temperature 32 - 122ºF U308 Optional Sensor C Humidity 20 – 80% U309 Freecooling Fluid Temperature 4 - 113ºF U310 DigiScroll 1 Temperature 84 - 313ºF U311 DigiScroll 2 Temperature 84 - 313ºF

U312

Freecooling Status Off, Start, On

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User Menu: Sensor Data U300 series: Page 1 of 2

Menu Line Parameter Time/ Value

U313 Daily High Temperture U314 Daily Low Temperature U315 Daily High Humidity U316 Daily Low Humidity

User Menu: Active Alarms Parameters

Parameter

User to view all active alarms of all units connected

together (only Large Display)

User Menu: Display Setup Parameters U400 series

Menu Line Parameter Default Range

U401 Language English English . . . U402 Date (Month/Day/Year) MM/ DD/ YYYY MM/ DD/ YYYY U403 Time (Hrs:Min:Sec) - HH/ MM/ SS U404 Temperature Indication ºF ºF/ ºC U405 Display Contrast 80% 0 – 100% U406 Buzzer Frequency On at 80% On, Off, 0 – 100%

U407

Backlite Off After x Hours

5 minute 5 min – 12 hours

U408 Screen Simple Simple or Graphical U409 Display Shows Set + Act Set + Act, Set, Act U410 Display Colors Normal Normal or Inverted

yyyy-mm-dd

U411 Date Format dd.mm.yyyy

dd.mm.yyyy mm/dd/yyyy

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User Menu: Total Run Hours Parameters U500 series

Menu Line Parameter Range (Hours)

U501 - Actual U502 Fan motor(s) 0 - 32000 U503 Compressor 1 0 - 32000 U504 Compressor 2 0 - 32000 U505 Chilled Water/ Free Cool 0 - 32000 U506 Hot Gas / Hot Water 0 - 32000 U507 Electrical Heater 1 0 - 32000 U508 Electrical Heater 2 0 - 32000 U509 Electrical Heater 3 0 - 32000 U510 Humidifier 0 - 32000 U511 Dehumidification 0 - 32000

User Menu: Sleep Mode Parameters U600 series

Menu Line Default Range Parameter

U601 Password - U602 Sleep On - -

U603

Mon, Tue, Wed, Thu, Fri, Sat, Sun

No No or Yes

U604 Sleep Every Day (1) - U605 From / To 00:00 / 00:00 Time (hh:mm) U606 Sleep Every Day (2) - U607 From / To 00:00 / 00:00 Time (hh:mm) U608 U609 Timer Mode No No, Yes, Auto U610 Timer Mode Type System Off Sys off, Deadband U611 Dead Band 4ºF 4 - 27ºF

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User Menu: Service Contacts U700 series

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Menu Line Parameter Range

U701 U702 U703 Address Line 1 Text String U704 Address Line 2 Text String U705 Address Line 3 Text String U706 Address Line 4 Text String

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Service Menu Parameters

The Service menu display allows the user to customize the various unit settings for site specific operation. The factory default password to access the service menu items for programming is “501”. The Service Menu selections include the following choices in the order shown:

• Set Point Parameters

• Unit Diary

• Standby Settings Parameters

• Maintenance / Wellness Setting Parameters

• Diagnostic / Service Mode Parameters

• Set Alarm Parameters

• Sensor Calibration / Setup Parameters

• System / Network Setup Parameters

• Operations Setup Parameters

• Service Contacts Parameters

Service Menu: Set Point Parameters S100 series: Page 1 of 2

Menu Line Parameter Default Range

S101 Password - S102 Temperature Setpoint 73ºF 41 - 104ºF S103 Humidity Setpoint 50% 1 – 80% S104 Humidity Control Type Yes Yes or No S105 Supply Limit Disabled Disabled or Enabled S106 Supply Limit Temp Value 41ºF 41 - 77ºF S107 Autoset Enable Yes Yes or No S108 Temperature Proportional Band 7ºF 2 - 54ºF S109 Temperature Integration Time 0 0 – 5 minutes S110 Temperature Deadband 0 0 - 36ºF S111 Short Cycle Control Yes Yes or No

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Service Menu: Set Point Parameters S100 series: Page 2 of 2

Menu Line Parameter Default Range

S112 Password - S113 Humidity Proportional Band 10% 1 – 20% S114 Humidity Integration Time 0 0 – 5 minutes S115 Humidity Deadband 0 0 – 50%

S116 DT Between Room / FC Type Disable

Disable, Contact,

Value

S117 DT Between Room Air / FC Fluid 8ºF 0 - 36ºF S118 Minimum CW Temp Disable Enable / Disable S119 Minimum CW Temp Value 45ºF 32 - 68ºF S120 S121 S122

Service Menu: Unit Diary Log

Parameter

Displays changes to the unit as performed and entered by

the service person or customer

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Service Menu: Standby Setting / Lead-lag Parameters S500 series

Menu Line Parameter Default Range

S501 Password - S502 Number of Standby Units 0 0 – 15

S503 Rotation Frequency No

No, Daily, Every M,

T, W, Th, F, S, Su

S504 Rotate at (hour) 0 0 – 23 S505 Rotate at (minute) 0 0 – 59 S506 Rotate by 1 1 – 8 S507 Perform one rotation - No or Yes

S508 Cascade units No

No, Yes, Cool,

Temp

S509 Start All Standby Units by HT No No or Yes S510 S511

Service Menu: General Settings Maintenance / Wellness Parameters S000 series: Page 1 of 8

Menu Line Parameter Default Range

S001 Password - S002 Maintenance Frequency Per Year 1

0 – 12 per

year

S003 Max Bonus 0 0 – 12 S004 Max Penalty 0 0 – 12 S005 Last Maintenance - Date S006 Service Engineer - Name S007 Confirm PM - No or Yes S008 Calculated Next Maintenance - Date

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Service Menu: Fan Settings Maintenance / Wellness Parameters: Page 2 of 8

Menu Line Parameter Default Range

S012 Password - S013 Number of Starts - 0 – 32000 S014 Run Hours - 0 – 32000 S015 Average Working Time - 0 – 999 minutes S016 Starts per Day Optimum 1 1 – 240 S017 Starts per Day Worst 24 1 – 240 S018 Number of Alarms - 0 – 32000 S019 Actual Bonus - 0 - 12

Service Menu: Compressor 1 Settings Maintenance / Wellness Parameters: Page 3 of 8

Menu Line Parameter Default Range

S023 Password - S024 Number of Starts - 0 – 32000 S025 Run Hours - 0 – 32000 S026 Average Working Time - 0 – 999 minutes S027 Starts per Day Optimum 12 1 – 240 S028 Starts per Day Worst 240 1 – 240 S029 Number of HP Alarms - 0 – 32000 S030 Number of LP Alarms - 0 – 32000 S031 Number of OL Alarms - 0 – 32000 S032 Number of DS HT Alarms - 0 - 32000 S033 Actual Bonus - 0 - 12

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Service Menu: Compressor 2 Settings Maintenance / Wellness Parameters: Page 4 of 8

Menu Line Parameter Default Range

S034 Password - S035 Number of Starts - 0 – 32000 S036 Run Hours - 0 – 32000 S037 Average Working Time - 0 – 999 minutes S038 Starts per Day Optimum 12 1 – 240 S039 Starts per Day Worst 240 1 – 240 S040 Number of HP Alarms - 0 – 32000 S041 Number of LP Alarms - 0 – 32000 S042 Number of OL Alarms - 0 – 32000

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S043 Number of DS HT Alarms - 0 - 32000 S044 Actual Bonus - 0 - 12

Service Menu: Electric Heater 1 Settings Maintenance / Wellness Parameters: Page 5 of 8

Menu Line Parameter Default Range

S045 Password - S046 Number of Starts - 0 – 32000 S047 Run Hours - 0 – 32000 S048 Average Run Time - 0 – 999 minutes S049 Starts per Day Optimum 24 1 – 240 S050 Starts per Day Worst 240 1 – 240 S051 Number of Alarms - 0 – 32000 S052 Actual Bonus - 0 - 12

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Service Menu: Electric Heater 2 Settings Maintenance / Wellness Parameters: Page 6 of 8

Menu Line Parameter Default Range

S056 Password - S057 Number of Starts - 0 – 32000 S058 Run Hours - 0 – 32000 S059 Average Run Time - 0 – 999 minutes S060 Starts per Day Optimum 24 1 – 240 S061 Starts per Day Worst 240 1 – 240 S062 Number of Alarms - 0 – 32000 S063 Actual Bonus - 0 - 12

Service Menu: Electric Heater 3 Settings Maintenance / Wellness Parameters: Page 7 of 8

Menu Line Parameter Default Range

S067 Password - S068 Number of Starts - 0 – 32000 S069 Run Hours - 0 – 32000 S070 Average Run Time - 0 – 999 minutes S071 Starts per Day Optimum 24 1 – 240 S072 Starts per Day Worst 240 1 – 240 S073 Number of Alarms - 0 – 32000 S074 Actual Bonus - 0 - 12

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Service Menu: Humidifier Settings Maintenance / Wellness Parameters: Page 8 of 8

Menu Line Parameter Default Range

S078 Password - S079 Number of Starts - 0 – 32000 S080 Run Hours - 0 – 32000 S081 Average Run Time - 0 – 999 minutes S082 Starts per Day Optimum 24 1 – 240 S083 Starts per Day Worst 240 1 – 240 S084 Number of Alarms - 0 – 32000 S085 Actual Bonus - 0 - 12

Service Menu: Diagnostics / Service Mode S300 series: Page 1 of 5

Menu Line Parameter Range

S301 Password S302 Manual Mode Yes or No S303 Motor(s) Off or On S304 Compressor 1 Off or On S305 Compressor 1 Capacity Off or On S306 Compressor 1 Cycle Ramp 0-100% S307 Compressor 1 LLSV Off or On S308 Compressor 2 S309 Compressor 2 Capacity Off or On S310 Compressor 2 Cycle Ramp 0 – 100% S311 Compressor 2 LLSV

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Service Menu: Diagnostics / Service Mode: Page 2 of 5

Menu Line Parameter Range

S312 Password S313 HP 1 Alarm Counter 0 S314 HP 2 Alarm Counter 0 S315 HT 1 Alarm Counter 0 S316 HT 2 Alarm Counter 0 S317 S318 S319 S320 Electric Heat 1(or HG/ HW) Off or On S321 Heat 2 (or E.Heat 1) Off or On S322 Heat 3 (or E.Heat 2) Off or On

Service Menu: Diagnostics / Service Mode: Page 3 of 5

Menu Line Parameter Range

S323 Password S324 Humidifier Fill Off or On S325 Humidifier Off or On S326 Alarm Relay Off or On S327 FC Relay Off or On S328 3P Actuator Open Off or On S329 3P Actuator Close Off or On S330 Analog Out 1 0 – 100% S331 Analog Out 2 0 – 100% S332 Analog Out 3 0 – 100% S333 Analog Out 4 0 – 100%

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Service Menu: Diagnostics / Service Mode: Page 4 of 5

Menu Line Parameter Range

S334 Password S335 Status Remote Shutdown Off or On S336 Status Airflow Loss OK or Active S337 Status Motor Overload OK or Active S338 Status Filter OK or Active S339 Status Customer Input 1 OK or Active S340 Status Customer Input 2 OK or Active S341 Status Customer Input 3 OK or Active S342 Status Customer Input 4 OK or Active

Service Menu: Diagnostics / Service Mode: Page 5 of 5

Menu Line Parameter Range

S345 Password S346 Status HP1 OK or Active S347 Status LP1 OK or Active S348 Status C1 OL OK or Active S349 Status HP2 OK or Active S350 Status LP2 OK or Active S351 Status C2 OL OK or Active S352 Status Humidifier Problem OK or Active S353 Status DT2 Off or On S354 Status Min CW Off or On S355

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Service Menu: Set Alarm Parameters S200 series: Page 1 of 6

Menu Line Parameter Default Range

S201 Password - S202 Return Sensor Alarms Enabled Disabled or Enabled S203 High Return Temperature 80ºF 34 - 210ºF S204 Low Return Temperature 65ºF 34 - 210ºF S205 High Return Humidity 60% 1 – 99% S206 Low Return Humidity 40% 1 – 99% S207 Sensor A Alarms Disabled Disabled or Enabled S208 High Temperature Sensor A 90ºF 34 - 210ºF S209 Low Temperature Sensor A 55ºF 34 - 210ºF S210 High Humidity Sensor A 70% 1 – 99% S211 Low Humidity Sensor A 30% 1 – 99%

Service Menu: Set Alarm Parameters: Page 2 of 6

Menu Line Parameter Default Range

S212 Password - S213 Customer Input 1 Water alarm See note S214 Customer Input 1 Active When Closed Open or Closed S215 Customer Input 2 Water alarm See note S216 Customer Input 2 Active When Closed Open or Closed S217 Customer Input 3 Water alarm See note S218 Customer Input 3 Active When Closed Open or Closed S219 Customer Input 4 Water alarm See note S220 Customer Input 4 Active When Closed Open or Closed S221 Warning Activates Alarm Relay Yes Yes or No S222 Reset Disabled Alarms No Yes or No

Note: Customer Inputs 1, 2, 3 and 4 messages may be selected from Smoke Detected, Water Alarm, Condensate Pump Alarm, Flow Alarm, Standby Pump, Standby Unit.

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Service Menu: Set Alarm Parameters: Page 3 of 6

Menu Line Parameter

S223 Password S224 DELAY EN-DIS TYPE S225 Main Fan Overload 10 Sec En Alarm S226 Loss of Airflow 10 Sec En Alarm S227 Clogged Filters 60 Sec En Warning S228 High Room Temperature 10 Sec En Warning S229 Low Room Temperature 10 Sec En Warning S230 High Room Humidity 10 Sec En Warning S231 Low Room Humidity 10 Sec En Warning S232 High Temp Sensor A 10 Sec En Warning S233 Low Temp Sensor A 10 Sec En Warning S234 High Humid Sensor A 10 Sec En Warning S235 Low Humid Sensor A 10 Sec En Warning

Service Menu: Set Alarm Parameters: Page 4 of 6

Menu Line Parameter

S236 Password S237 DELAY EN-DIS TYPE S238 Comp 1 Overload 10 Sec En Alarm S239 Comp 2 Overload 10 Sec En Alarm S240 Comp 1 High Pressure - En Alarm S241 Comp 1 High Pressure - En Alarm S242 Comp 1 Low Pressure - En Alarm S243 Comp 2 Low Pressure - En Alarm S244 Comp 1 Pumpdown Fail - En Alarm S245 Comp 2 Pumpdown Fail - En Alarm S246 Dig Scroll1 High Temp - En Alarm S247 Dig Scroll2 High Temp Alarm

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Service Menu: Set Alarm Parameters: Page 5 of 6

Controls Training and Service Manual

Menu Line Parameter

S249 Password S250 DELAY EN-DIS TYPE S251 Working Hours Exceeded - En Warning S252 Smoke Detected 5 Sec En Alarm S253 Water Under Floor 5 Sec En Alarm S254 Cond Pump-High Water 5 Sec En Alarm S255 Loss of Flow 5 Sec En Alarm S256 Standby Glycol Pump On 5 Sec En Alarm S257 Standby Unit On 5 Sec En Alarm S258 Humidifier Problem 5 Sec En Alarm S259 No Connection w/ Unit 1 - En Alarm S260 Unit X Disconnected - En Alarm

Service Menu: Set Alarm Parameters: Page 6 of 6

Menu Line Parameter

S262 Password S263 DELAY EN-DIS TYPE S264 Customer Input 1 5 Sec En Alarm S265 Customer Input 2 5 Sec En Alarm S266 Customer Input 3 5 Sec En Alarm S267 Customer Input 4 5 Sec En Alarm S268 Call Service 5 Sec En Message S269 High Temperature 5 Sec En Message S270 Loss of Air Blower 1 5 Sec En Alarm S271 Reheat Lockout 5 Sec En Message S272 Humidifier Lockout 5 Sec En Message S273 Humid + Reheat Lockout 5 Sec En Message S274 Compressor(s) Lockout 5 Sec En Message

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Service Menu: Sensor Calibration/ Setup Parameters S600 series: Page 1 of 3

Menu Line Parameter Range

S601 Password S602 Return temperature ±17ºF S603 Calibrated return temperature 32 - 122ºF S604 Return humidity ±9.9% S605 Calibrated return humidity 20 – 80% S606 Digital Scroll 1 NTC ±17ºF S607 Calibrated digital scroll 1 NTC 84 – 313ºF S608 Digital Scroll 2 NTC ±17ºF S609 Calibrated digital scroll 2 NTC 84 - 313ºF

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Service Menu: Sensor Calibration/ Setup Parameters: Page 2 of 3

Menu Line Parameter Range

S612 Password S613 Temperature sensor A ±17ºF S614 Calibrated temperature sensor A 32 - 122ºF S615 Humidity sensor A ±9.9% S616 Calibrated humidity sensor A 20 – 80% S617 Temperature sensor B ±17ºF S618 Calibrated temperature sensor B 32 - 122ºF S619 Humidity sensor B ±9.9% S620 Calibrated humidity sensor B 20 – 80%

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Service Menu: Sensor Calibration/ Setup Parameters: Page 3 of 3

Menu Line Parameter Default Range

S623 Password S624 Glycol sensor PTC or NTC NTC NTC or PTC S625 Glycol sensor - ±17ºF S626 Calibrated glycol sensor - 4 – 113ºF S627 Supply sensor PTC or NTC NTC NTC or PTC S628 Supply sensor - ±17ºF S629 Calibrated supply sensor - 32 - 122ºF S630 Temperature sensor C - ±17ºF S631 Calibrated temperature sensor C - 32 - 122ºF S632 Humidity sensor C - ±9.9% S633 Calibrated humidity sensor C - 20 – 80%

Service Menu: System / Network Setup Parameters Series S800: Page 1 of 2, System View

Menu Line Function Default Range

S801 Password - S802 Number of connected units - 1 – 16 S803 Teamwork mode No No, 1, 2 S804 S805 U2U group - 1 - 99 S806 S807 S808 S809 Configuration Safe Status No No, Save, Load S810 Network Safe Status - No, Save, Load S811 SW version: -

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Service Menu: System / Network Setup Parameters Series S800: Page 2 of 2, System View

Menu Line Function Default Range

S812 Password - S813 IP Address - IP Address S814 Netmask - Netmask Range S815 Gateway - Gateway Range S816 MAC - MAC Range S817 U2U Protocol - S818 U2U Address - 33 - 64 S819 - S820 - S821 Bootloader Variables Status - Changed, Updating S822 Bootloader Variables Control - No, Save + Reboot

Service Menu: System / Network Setup Parameters Series S800: Page 1 of 2, Unit View

Menu Line Function Default Range

S823 Password - S824 Monitoring Address 3 S825 S826 U2U Group 1 – 99 S827 Unit Name Unit 6 Digits S828 S829 S830 S831 Configuration Safe Status No No, Save, Load S832 Network Safe Status No No, Save, Load S833 SW version: -

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Controls Training and Service Manual

Service Menu: System / Network Setup Parameters Series S800: Page 2 of 2, Unit View

Menu Line Function Default Range

S834 Password - S835 Monitoring Protocol - S836 IP Address - IP Range S837 Netmask - Netmask Range S838 Gateway - Gateway Range S839 MAC - MAC Range S840 U2U Protocol - 33 - 64 S841 U2U Address - S842 - S843 Bootloader Variables Status - Changed, Updating S844 Bootloader Variables Control - No, Save + Reboot

Service Menu: Option Setup Parameters S400 series: Page 1 of 2

Menu Line Function Default Range

S401 Password - S402 Compressor Sequence Auto 1, 2, Auto S403 Low Pressure Delay (WSK) 3 0 – 5 Minutes S404 Actual LP1 Pressure - 14.5 – 87.0 psiA S405 Actual LP2 Pressure - 14.5 – 87.0 psiA S406 Electric Stages - 0, 1, 2, 3 S407 Hot Water Heat On / Off No No or Yes S408 Hot Gas Heat No No, Comp. 1, Comp. 2 S409 Total Heat Stages No 0, 1, 2, 3l S410 3P Actuator Runtime 165 Seconds 50 – 400 seconds S411 3P Actuator Direction Direct Direct or Reverse

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Service Menu: Option Setup Parameters S400 series:: Page 2 of 2

Menu Line Function Default Range

S412 Password - S413 Humidification Enabled Yes Yes or No S414 Infrared Flush Rate 150% 110 – 500% S415 Dehumidification Enabled Yes No or Yes S416 Electric Reheat Operation No No, Normal, Delayed S417 Single Unit Auto Restart 5 Seconds 0 – 999 seconds S418 On – Off Enabled Yes Yes or No S419 S420 CW Flush No No, 1 – 99 Hours S421 Freecooling Flush No No, 1 – 99 Hours S422 Hot Water Flush No No, 1 – 99 Hours

Service Menu: Service Contacts Parameters S700 series:

Menu Line Function Default Range

S701 Password - -

S702 Country USA None, United States S703 Address line 1 - Text-string S704 Address line 2 - Text-string S705 Address line 3 - Text-string S706 Address line 4 - Text-string

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Controls Training and Service Manual

Advanced Menu Parameters

The Advanced menu displays allows the service technician to set the unit configuration code and to customize the various unit settings for site-specific operation. The factory default password to access the advanced menu items for programming is “221”. The Advance Menu selections include the following choices in the order shown:

• Factory Settings

• Access Levels

Advanced Menu: Factory Settings Parameters A001 series: Page 1 of 6

Menu Code Parameter Range

A001 Password A002 A003 A004 A005 A006 A007

A008

A009

A010

A011

Unit field code (R) (01 – 06) Set code (W) (01 – 06) Unit field code (R) (07 – 12) Set code (W) (07 – 12) Unit field code (R) (13 – 18) Set code (W) (13 – 18)

Unit Code Control

Unit Code Status

Exception List Control No, Load

Exception List Status

Load+Execute

Save+Execute

No Load+Execute Save+Execute

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Advanced Menu: Factory Settings Parameters A100 series: Page 2 of 6

Menu Code Function Default Range

A101 Password - A102 Refrigerant Type R22 R22, R407C

A103 Main Fan Overload Shut down Shut down, Disable

A104 Loss of Airflow Shut down Shut down, Disable A105 Number of Compressors 2 0, 1, 2

A106 Compressor Delay Time 0 0 - 120 Sec

Control Training and Service Manual

A107

A108 A109 Pump Down Yes No, Yes A110 Capacity Control Type Unloader

Advanced Menu: Factory Settings Parameters A100 series: Page 3 of 6

Menu Code Parameter Default Range

A112 Password - A113 Digi Scroll Cycle 15 No, 10 - 30 Sec

A114 A115 Digi Scroll Switchback 250°F 33 - 392°F A116

Compressor Minimum On Time

Compressor Minimum Off Time

High Temperature Digi Scroll

Low Pressure Device Type

3 Min 0 - 5 Min

No, Unloader, HGBP,

Digital, Digital + TH

268°F 33 - 392°F

Analog Analog, Switch

A117

A118

Low Pressure Threshold Phase 1

Low Pressure Threshold Phase 2

* See Note 1 0.0 - 145 psiA

* See Note 2 0.0 - 145 psiA

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Advanced Menu: Factory Settings Parameters: Page 4 of 6

Controls Training and Service Manual

Menu Code Parameter Default Range

A123 Password - A124 LP1 Sensor 10% 0 - 100% A125 A126 Actual LP1 Signal - 0 - 100% A127 LP2 Sensor 10% 0 - 100% A128 A129 Actual LP2 Signal - 0 - 100% A130 Pumpdown Cutout 35 psiA 0.0 - 145 psiA A131 Pumpdown Recycle 80 psiA 0.0 - 145 psiA

A132

Advanced Menu: Factory Settings Parameters A100 series: Page 5 of 6

Menu Code Parameter Default Range

A134 Password - A135

LP1 Signal 150 psiA -87.0 to +725 psiA

LP2 Signal 150 psiA -87.0 to +725 psiA

Heat Rejection Control Type

Fan Speed

Fan Speed /

Lee-Temp / Glycol

A136 CW flush Duration 0 No, 1 - 3 min A137 Freecooling A138 A139 Freecooling Flush Duration 0 No, 1 - 3 min A140 Freecooling Flush Starts R5 Yes No, Yes A141 CO + FC simultaneously Yes No, Yes A142 A143 Hot water flush duration 0 No, 1 - 3 min

No, Yes

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Advanced Menu: Factory Settings Parameters: Page 6 of 6

Menu Code Parameter Default Range

A145 Password - -

Control Training and Service Manual

A146 Humidifier Model A147

A148 Prefill Time

A149 Fill Time

A150

A151 A152 Analog Output 1 Not used

A153 Analog Output 2 Not used A154 Analog Output 3 Not used A155 Analog Output 4 Not used

Note 1: LP threshold Phase 1 (A117): If condenser ctrl (A132) = fan speed then setting is 50 psiA ; otherwise 75 psiA. If the condenser control setting changes, the setting for A117 will be updated automatically. If any of the sources (Refrigerant, Freecooling, Hotwater) changes, the setting for A118 will be updated automatically.

Note 2: LP threshold Phase 1 (A118): R22 (A102) + NO FC (A137) + NO Hotwater (S408) = 63 psiA R22 (A102) + YES FC (A137) + NO Hotwater (S408) = 68 psiA R22 (A102) + NO FC (A137) + YES Hotwater (S408) = 75 psiA R22 (A102) + YES FC (A137) + YES Hotwater (S408) = 75 psiA R407c (A102) + NO FC (A137) + NO Hotwater (S408) = 70 psiA R407c (A102) + YES FC (A137) + NO Hotwater (S408) = 75 psiA R407c (A102) + NO FC (A137) + YES Hotwater (S408) = 83 psiA R407c (A102) + YES FC (A137) + YES Hotwater (S408) = 83 psiA

Note 3: The following components may be controlled with the Analog Outputs and labeled as: Hot Water Reheat, 3P Valve, Fan Speed, Cooling, Cooling 1, Cooling 2, Heating and Not Used.

Humidity in Last xx Hours

Humidifier On Time

Dehum with Compressor

15hr 1 - 120 hours

IFS 30 IFL 60

IFS 30 IFL 50

IFS 8

IFL 10

2 1, 2, both

No, external, IFS, IFL

1 - 120 seconds

1 - 60 minutes

* See note 3

*See note 3 * See note 3 * See note 3

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Advanced Menu: Factory Access Parameters A200 series:

Controls Training and Service Manual

Menu Code Parameter Default Range

A201 Password Level 1 (User) 149 4 digits A202 Password Level 2 (Service) 501 4 digits A203 Password Level 3 (Advanced) 221 4 digits

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Control Training and Service Manual

Events Notifications Parameters

ID Type Description (Large Display) Description (Small Display)

000 Alarm GENERAL ALARM GENERAL ALARM 001 Alarm COMP. 1 HIGH PRESSURE COMP. 1 HIGH PRESSURE 002 Alarm COMP. 1 LOW PRESSURE COMP. 1 LOW PRESSURE 003 Warning HIGH CHILLED WATER HIGH CHILLED WATER 004 Warning LOW CHILLED WATER FLOW LOW WATER FLOW 005 Warning EL. HEAT. OVERHEATED EL. HEAT. OVERHEATED 006 Alarm MAIN FAN OVERLOAD MAIN FAN OVERLOAD 007 Alarm LOSS OF AIRFLOW LOSS OF AIRFLOW 008 Warning CLOGGED FILTERS CLOGGED FILTERS

009-017 Future Future Future

018 Warning HIGH ROOM TEMPERATURE HIGH ROOM TEMPERATURE 019 Warning LOW ROOM TEMPERATURE LOW ROOM TEMPERATURE 020 Warning HIGH ROOM HUMIDITY HIGH ROOM HUMIDITY 021 Warning LOW ROOM HUMIDITY LOW ROOM HUMIDITY 022 Warning HIGH ROOM TEMPERATURE HIGH ROOM TEMPERATURE 023 Warning LOW ROOM TEMPERATURE LOW ROOM TEMPERATURE 024 Warning HIGH ROOM HUMIDITY HIGH ROOM HUMIDITY 025 Warning LOW ROOM HUMIDITY LOW ROOM HUMIDITY 026 Warning UNIT HOURS EXCEEDED UNIT HOURS EXCEEDED 027 Warning C1 HOURS EXCEEDED C1 HOURS EXCEEDED 028 Warning HUMIDIFIER HOURS EXCEEDED HUM. HOURS EXCEEDED 029 Warning SUPPLY SENSOR FAILURE SUPPLY SENSOR FAILURE 030 Future Future Future 031 Alarm ROOM SENSOR FAILURE ROOM SENSOR FAILURE 032 Warning SENSOR "A" FAILURE SENSOR "A" FAILURE 033 Future Future Future 034 Warning NETWORK FAILURE NETWORK FAILURE 035 Future Future Future 036 Message UNIT ON UNIT ON

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Controls Training and Service Manual

Events Notifications Parameters (continued)

ID Type Description (Large Display) Description (Small Display)

037 Message UNIT OFF UNIT OFF 038 Message SLEEP MODE SLEEP MODE 039 Message STANDBY MODE STANDBY MODE 040 Message POWER ON UNIT LOGIN POWER ON UNIT LOGIN 041 Message POWER OFF POWER OFF 042 Warning Unit 1 disconnected Unit 1 disconnected 043 Warning Unit 2 disconnected Unit 2 disconnected 044 Warning Unit 3 disconnected Unit 3 disconnected 045 Warning Unit 4 disconnected Unit 4 disconnected 046 Warning Unit 5 disconnected Unit 5 disconnected 047 Warning Unit 6 disconnected Unit 6 disconnected 048 Warning Unit 7 disconnected Unit 7disconnected 049 Warning Unit 8 disconnected Unit 8 disconnected 050 Warning Unit 9 disconnected Unit 9 disconnected 051 Warning Unit 10 disconnected Unit 10 disconnected 052 Warning Unit 11 disconnected Unit 11 disconnected 053 Warning Unit 12 disconnected Unit 12 disconnected 054 Warning Unit 13 disconnected Unit 13 disconnected 055 Warning Unit 14 disconnected Unit 14 disconnected 056 Warning Unit 15 disconnected Unit 15 disconnected 057 Warning Unit 16 disconnected Unit 16 disconnected 058 Alarm COMP. 2 HIGH PRESSURE COMP. 2 HIGH PRESSURE 059 Alarm COMP. 2 LOW PRESSURE COMP. 2 LOW PRESSURE 060 Warning C2 HOURS EXCEEDED C2 HOURS EXCEEDED 061 Future Future Future 062 Warning GLYCOL TEMP. SENSOR GLYCOL TEMP. SENSOR 063 Future Future Future 064 Warning ON-OFF KEY DISABLED ON-OFF KEY DISABLED

065-069 Future Future Future

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Control Training and Service Manual

Events Notifications Parameters (continued)

ID Type Description (Large Display) Description (Small Display)

070 Warning NO CONNECTION TO UNIT 1 NO CONN. TO UNIT 1 071 Alarm C1 MOTOR PROTECTION C1 MOTOR PROTECTION 072 Alarm C2 MOTOR PROTECTION C2 MOTOR PROTECTION

073-078 Future Future Future

079 Message UNIT DISABLED UNIT DISABLED 080 Message UNIT SHUT DOWN UNIT SHUT DOWN

081-084 Future Future Future

085 Message UNIT SYNCHRONISATION UNIT SYNCHRONISATION 086 Warning HUMIDIFIER PROBLEM HUMIDIFIER PROBLEM 087 Future Future Future 088 Message DEHUM HOURS EXCEEDED DEHUM HOURS EXCEEDED 089 Warning FC. HOURS EXCEEDED FC. HOURS EXCEEDED 090 Future Future Future 091 Alarm PUMP DOWN FAILURE C1 PUMP DOWN FAILURE C1

092-095 Future Future Future

096 Alarm PUMP DOWN FAILURE C2 PUMP DOWN FAILURE C2 097 Alarm DIGISCROLL 1 HIGH TEMP. D.SCROLL 1 HIGH TEMP. 098 Alarm DIGISCROLL 2 HIGH TEMP. D.SCROLL 2 HIGH TEMP.

099 102 Future Future Future

103 Message SHORT CYCLING SHORT CYCLING 104 Alarm SMOKE DETECTED SMOKE DETECTED 105 Alarm WATER UNDER FLOOR WATER UNDER FLOOR 106 Alarm COND. PUMP-HIGH WATER COND. PUMP-HIGH WATER 107 Alarm LOSS OF FLOW LOSS OF FLOW 108 Alarm STANDBY GLYCOL PUMP ON STBY GLYCOL PUMP ON 109 Alarm STANDBY UNIT ON STANDBY UNIT ON 110 Warning HW/HG HOURS EXCEEDED HW/HG WORKING HOURS

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Controls Training and Service Manual

Events Notifications Parameters (continued)

ID Type Description (Large Display) Description (Small Display)

111 Warning

112 Warning

113 Warning

EL.HEAT 1 HOURS

EXCEEDED

EL.HEAT 2 HOURS

EXCEEDED

EL.HEAT 3 HOURS

EXCEEDED

Event ID number, Description and Function

ID Description Event explanation Default

Type

000 GENERAL

ALARM

001 COMP 1 HIGH

PRESSURE

002 COMP 1 LOW

PRESSURE

003 HIGH CW

TEMP

004 LOSS OF CW

FLOW

005 EL HEAT HIGH

TEMP

006 MAIN FAN

OVERLOAD

Warning or Alarm was acknowledged or reset Compressor 1 stopped because of high pressure

Compressor 1 stopped because of low pressure

chilled water temperature too high (input from thermostat) chilled water flow too low (input from flow switch) electric heaters stopped because of too high temperature on the safety thermostat fan motor protection has stopped the fan due to overload. this event can be set to switch off the unit or to disable hum and electric heat.

Reset - - Alarm no yes yes

Alarm no yes yes

Warning no no -

Warning no no Warning no no -

Alarm yes, if

EL.HEAT 1 HOURS EXC.

EL.HEAT 2 HOURS EXC.

EL.HEAT 3 HOURS EXC.

Shut

down

single

unit

set to

shut

down

Rotat

stand

yes yes, only if

restart if

duty unit

fails also

(broken co will remain

off)

(broken co will remain

off)

set to

"disable"

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Control Training and Service Manual

007 LOSS OF

AIRFLOW

008 CLOGGED

FILTERS

018 HIGH ROOM

TEMP

019 LOW ROOM

TEMP

020 HIGH ROOM

HUM

021 LOW ROOM

HUM

022 HIGH TEMP

SENSOR A

023 LOW TEMP

SENSOR A

024 HIGH HUM

SENSOR A

025 LOW HUM

SENSOR A

026 UNIT HRS

EXCEEDED

027 COMP 1 HRS

EXCEEDED

not enough airflow through the unit. this event can be set to switch off the unit or to disable hum and electric heat. air filters are dirty Warning no no -

actual return air temperature (value from std. sensor) is higher than the threshold actual return air temperature (value from std. sensor) is lower than the threshold actual return air humidity (value from std. sensor) is higher than the threshold actual return air humidity (value from std. sensor) is lower than the threshold actual temperature (value from optional sensor A) is higher than the threshold actual temperature (value from optional sensor A) is lower than the threshold actual humidity (value from optional sensor A) is higher than the threshold actual humidity (value from optional sensor A) is lower than the threshold actual working hours of the fan are higher than the threshold set. actual working hours of compressor 1 are higher than the threshold set.

Alarm yes, if

set to

shut

down

Warning no no -

yes yes, only if

set to

"disable"

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Controls Training and Service Manual

028 HUM HRS

EXCEEDED

029 SUPPLY

SENSOR FAILURE

031 ROOM

SENSOR FAILURE

032 SENSOR A

FAILURE

034 NETWORK

FAILURE

036 UNIT ON fan motor in operation Message - - 037 UNIT OFF unit shut down Message - - 038 SLEEP MODE unit is in sleep mode:

039 STANDBY

MODE

040 POWER ON control is powered again 041 POWER OFF no power to the control:

042 Unit 1

disconnected

043 Unit 2

disconnected

044 Unit 3

disconnected

045 Unit 4

disconnected

046 Unit 5

disconnected

047 Unit 6

disconnected

actual working hours of the fan are higher than the threshold set. sensor faulty or not present, but needed from control (supply limit control enabled). no valid data from the std. sensor

no valid data from sensor A Warning no no the unit showing this

event has no connection to the unit #1.

according to the settings it is switched off or working with a selectable deadband. unit is in standby (fan off), waiting for a call to start from the system (if a unit fails or there is a bus interruption).

after a power off. this message will appear

at the next power on. this event is created from a coldfire display only: the display doesn't find unit #1 " Warning no no -

" Warning no no " Warning no no " Warning no no " Warning no no -

Warning no no -

Alarm yes yes no

Warning no no -

Message - - -

Message - - Message - - -

Warning no no -

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Control Training and Service Manual

048 Unit 7

disconnected

049 Unit 8

disconnected

050 Unit 9

disconnected

051 Unit 10

disconnected

052 Unit 11

disconnected

053 Unit 12

disconnected

054 Unit 13

disconnected

055 Unit 14

disconnected

056 Unit 15

disconnected

057 Unit 16

disconnected

058 COMP 2 HIGH

PRESSURE

059 COMP 2 LOW

PRESSURE

060 COMP 2 HRS

EXCEEDED

062 FREECOOL

TEMP SENSOR

064 ON-OFF KEY

DISABLED

070 NO

CONNECTION w/Unit1

071 COMP 1

OVERLOAD

" Warning no no " Warning no no " Warning no no " Warning no no " Warning no no " Warning no no " Warning no no " Warning no no " Warning no no " Warning no no Compressor 2 stopped

because of high pressure

Compressor 2 stopped because of low pressure

actual working hours of compressor 2 are higher than the threshold set. sensor faulty or not present, but needed from control (freecooling control enabled). the display on-off button was set disabled but somebody pressed it. the unit showing this event has no connection to the unit #1. Compressor 1 stopped because of overload

Alarm no yes yes

(broken co will remain

off)

Alarm no yes yes

(broken co will remain

off)

Warning no no -

Alarm no yes yes

(broken co will remain

off)

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Controls Training and Service Manual

072 COMP 2

OVERLOAD

079 UNIT

DISABLED

080 UNIT SHUT

DOWN

085 UNIT

SYNCHRONIS ATION

086 HUMIDIFIER

PROBLEM

088 DEHUM HRS

EXCEEDED

089 FC HRS

EXCEEDED

091 COMP 1

PUMPDOWN FAIL

096 COMP 2

PUMPDOWN FAIL

097 DIG SCROLL1

HIGH TEMP

Compressor 2 stopped because of overload

this message appears after a critical alarm (airflow, main fan overload) and indicates that the unit is operating w/o humidifier or electrical heaters.

this message appears after a critical alarm (airflow, main fan overload) and indicates that the unit is shut down due to the alarm. a unit came back into the network.

humidifier overtemperature or high water level actual working hours of dehumidification are higher than the threshold set. actual working hours of freecooling are higher than the threshold set. Pump down of circuit 1 was not completed (pressure value not reached). Pump down of circuit 2 was not completed (pressure value not reached). Digital Scroll compressor #1 shut off because of high temperature (sensor is inside the compressor).

Alarm no yes yes

(broken co will remain

off)

Message - -

Message - - -

Alarm no yes

Warning no no

Warning no no -

Alarm no yes yes

(broken co will remain

off)

Alarm no yes yes

(broken co will remain

off)

Alarm no yes yes

(broken co will remain

off)

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Control Training and Service Manual

098 DIG SCROLL2

HIGH TEMP

103 SHORT CYCLE compressors are

104 SMOKE

DETECTED

105 WATER

UNDER FLOOR

106 COND PUMP-

HIGH WATER

107 LOSS OF

FLOW

108 STBY GLYCOL

PUMP ON

109 STANDBY

UNIT ON

110 HW/HG HRS

EXCEEDED

111 EL HEAT1 HRS

EXCEEDED

112 EL HEAT2 HRS

EXCEEDED

113 EL HEAT3 HRS

EXCEEDED

Digital Scroll compressor #1 shut off because of high temperature (sensor is inside the compressor).

requested from control to start too often - control is unstable. customer input is active. Alarm no yes yes (if not

customer input is active. Alarm no yes yes (if not

actual working hours of hot water heat / hot gas reheat are higher than the threshold set. actual working hours of electrical heater stage 1 are higher than the threshold set. actual working hours of electrical heater stage 2 are higher than the threshold set. actual working hours of electrical heater stage 3 are higher than the threshold set.

Alarm no yes yes

(broken co will remain

off)

Message - no -

disabled

externally)

disabled

externally)

disabled

externally)

disabled

externally)

disabled

externally)

disabled

externally)

Warning no no -

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Controls Training and Service Manual

114 UNIT CODE

MISSING

115 UNIT CODE 01

MISMATCH

116 UNIT CODE 02

MISMATCH

117 UNIT CODE 03

MISMATCH

118 UNIT CODE 04

MISMATCH

119 UNIT CODE 05

MISMATCH

120 UNIT CODE 06

MISMATCH

121 UNIT CODE 07

MISMATCH

122 UNIT CODE 08

MISMATCH

123 UNIT CODE 09

MISMATCH

124 UNIT CODE 10

MISMATCH

125 UNIT CODE 11

MISMATCH

126 UNIT CODE 12

MISMATCH

127 UNIT CODE 13

MISMATCH

128 UNIT CODE 14

MISMATCH

129 UNIT CODE 15 " Alarm yes yes no

this alarm appears if a totally new board was started the very first time in its life. the unit code must be set in order to let the board know in which type of unit it is mounted, which component it shall drive and how to map the inputs and outputs.

this digit of the unit code has been set to a value out of range (no code logic available for this number) " Alarm yes yes no

" Alarm yes yes no " Alarm yes yes no " Alarm yes yes no " Alarm yes yes no " Alarm yes yes no " Alarm yes yes no " Alarm yes yes no " Alarm yes yes no " Alarm yes yes no " Alarm yes yes no " Alarm yes yes no " Alarm yes yes no

Alarm yes yes no

MISMATCH

130 UNIT CODE 16

MISMATCH

131 UNIT CODE 17

MISMATCH

132 UNIT CODE 18

MISMATCH

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" Alarm yes yes no " Alarm yes yes no " Alarm yes yes no

Control Training and Service Manual

Liebert TM-10098 User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual