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LCBS Connect Solution
APPLICATION MANUAL

TABLE OF CONTENTS

Introduction .................................................................................................................................................................. 2
Background....................................................................................................................................................................................... 3
Automatic Building Schedules ................................................................................................................................ 4
Scheduling a Holiday .................................................................................................................................................................... 5
Heating, Heat Pump Control .................................................................................................................................... 6
Heating Theory and Operation ................................................................................................................................................. 6
Basic Gas and Electric Heating ................................................................................................................................................ 6
Air to Air Heat Pump ...................................................................................................................................................................... 6
Droop, Comfort and Saving Heat Pump Mode ................................................................................................................... 7
Discharge Air Temperature High Limit Control.................................................................................................................. 7
Cooling, Dehumidification, Economizer Control ................................................................................................ 7
Cooling Theory and Operation .................................................................................................................................................. 7
Cooling Operation .......................................................................................................................................................................... 8
Dehumidification Theory and Operation .............................................................................................................................. 8
Method #1: Cooling On, Cycle Heating................................................................................................................................. 8
Method #2: Simple Humidification......................................................................................................................................... 8
Method #3: Dehumidification extended cooling minimum run time ....................................................................... 9
Fresh Air Economizer Control .................................................................................................................................. 9
Theory and Operation Economizer ......................................................................................................................................... 9
General Economizer Operation ................................................................................................................................................ 9
Honeywell Integrated Economizer Control Described .................................................................................................... 10
Honeywell Integrated Economizer Control, Climate Zones .......................................................................................... 12
Strategy 1: Differential Enthalpy with Fixed Dry Bulb Temperature Limit .............................................................. 12
Strategy 2: Outdoor Air Enthalpy.............................................................................................................................................. 12
Strategy 3: Differential Temperature ...................................................................................................................................... 12
Strategy 4: Outdoor Temperature ............................................................................................................................................ 12
Low Limit Temperature Override Control ............................................................................................................................. 13
Freeze Stat Operation ................................................................................................................................................................... 13
Advanced Temperature Control Fundamentals.................................................................................................. 13
Proportional Control and the Concept of Differential and Throttling Range......................................................... 13
Proportional Control...................................................................................................................................................................... 13
Set point and Differential Refresher - On Off, Digital Control...................................................................................... 14
Integral Action Primer and Refresher Course for Some.................................................................................................. 15
Derivative Control........................................................................................................................................................................... 17
Demand Controlled Ventilation............................................................................................................................... 17
Theory and Operation Demand Controlled Ventilation .................................................................................................. 17
DCV Operation ................................................................................................................................................................................. 17
Adaptive Intelligent Recovery.................................................................................................................................. 18
31-00118EFS-01

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Table of Contents

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   Summary of Contents for Honeywell LCBS

  • Page 1: Table Of Contents

    Honeywell Integrated Economizer Control Described ....................10 Honeywell Integrated Economizer Control, Climate Zones ..................12 Honeywell Integrated Economizer Control - High Limit and Changeover Strategies........12 Strategy 1: Differential Enthalpy with Fixed Dry Bulb Temperature Limit .............. 12 Strategy 2: Outdoor Air Enthalpy.............................. 12 Strategy 3: Differential Temperature ............................
  • Page 2: Introduction

    Gateway that permits controller data to be sent from individual CHAHU controllers via the internet to the new LCBS Connect Cloud. The new Honeywell Cloud capability gives our control system users unprecedented access to data remotely via standard smart phones, tablets, and personal computers.
  • Page 3: Background

    The primary focus for LCBS Connect is control of CVAHU rooftop units and split systems. Over 60% of commercial buildings in North America are heated and cooled by CVAHU packaged and split systems. The average age of this HVAC equipment is approximately eight (8) to 10 years.
  • Page 4: Automatic Building Schedules

    Honeywell Adaptive Intelligent Recovery permits us to meet this requirement. LCBS Connect controllers also have the ability to control temperature to "standby" set points. This set point technique is typically applied to building spaces that are randomly and infrequently occupied. A good example of the application of the standby set point is for an office or meeting room.
  • Page 5: Scheduling A Holiday

    LCBS Connect users can permit the supply fan to run only on a call for heating or cooling during "occupied" periods, but it is discouraged and defies prevailing the building ventilation code. Further, cycling the fan on a call for heating or cooling can degrade the life of the fan motor, fan belts, and associated fan accessories.
  • Page 6: Heating, Heat Pump Control

    For gas heating option, LCBS Connect can either be set to energize supply fan operation on a call for heating directly or the supply fan can be controlled by a fan and limit device.
  • Page 7: Droop, Comfort And Saving Heat Pump Mode

    It is HIGHLY RECOMMENDED that you DON'T alter these parameters unless a Honeywell LCBS Connect support professional tells you to do so. You will need to make some basic changes to the device if you are commissioning a heat pump. There are a number of options described in this document that will allow you to alter basic heat pump operation;...
  • Page 8: Cooling Operation

    "slugged." The LCBS Connect controller shuts off the supply fan, the compressor and closes the outdoor air damper if a frozen coil condition is detected. Also the discharge air sensor utilizes a control tactic called a "low limit", where if the discharge air temperature falls below the low limit, compressor stages will be turned off until the condition goes away or all stages are off.
  • Page 9: Method #3: Dehumidification Extended Cooling Minimum Run Time

    It is HIGHLY RECOMMENDED that you DON'T alter these parameters unless a Honeywell LCBS Connect support professional tells you to do so. You will need to make some basic changes to the device if you are commissioning a dehumidification loop. There are a number of options described in this document that will allow you to alter basic dehumidification operation.
  • Page 10: Honeywell Integrated Economizer Control Described

    10%. Don't panic! Hysteresis that occurs from damper and actuator linkage, plus the relatively poor accuracy of OEM dampers will make it easy for you to estimate 10% damper position. Use the LCBS Connect service mode to help you set the 10% air flow target.
  • Page 11 The control is mitigated by a throttling range set point. WARNING Unless you are instructed to do so by your Honeywell or LCBS Connect control system distributor, you should NEVER have to change mixed air set point and throttling range. Over 8M of the control systems we've provided to the HVAC industry have these set points "hard coded"...
  • Page 12: Honeywell Integrated Economizer Control, Climate Zones

    This technique can be used in all ASHRAE climate zones. Successfully applied, excellent energy savings can accrue to building owners. LCBS Connect remote services alerting and analytics can help you fine tune settings to maximize customer energy savings and maintain comfort.
  • Page 13: Low Limit Temperature Override Control

    LCBS Connect controller. A freeze stat contact must be installed and an output from the device needs to be terminated to the LCBS controller. If the freeze stat is configured and the LCBS Connect controller input is closed, the CVAHU system will be shut down.
  • Page 14: Set Point And Differential Refresher - On Off, Digital Control

    LCBS CONNECT SOLUTION THROTTLING THROTTLING RANGE RANGE 100% 100% 70°F 72°F 74°F 76°F 78°F 70°F 72°F 74°F 76°F 78°F SENSOR INPUT VALUE SENSOR INPUT VALUE EXAMPLE: HEATING – REVERSE ACTING EXAMPLE: COOLING – DIRECT ACTING SETPOINT 76°F THROTTLING RANGE 4°F SETPOINT 72°F THROTTLING RANGE 4°F...
  • Page 15: Integral Action Primer And Refresher Course For Some

    LCBS CONNECT SOLUTION PROPORTIONAL ON OFF CONTROL HEATING (REVERSE ACTING) TYPICAL HEATING CIRCUIT LOAD (HEATING) OFF HEATING SETPOINT “ERROR” = SETPOINT PLUS “DIFFERENTIAL MEASURED VALUE LOAD LOAD (HEATING) ON (HEATING) ON MEASURED VALUE PROPORTIONAL CONTROL – HEATING – REVERSE ACTING “ON”...
  • Page 16 Do You Want to Know More about Integral Control? As a starting point, the LCBS Connect controller uses the dependent gains form of the PID equation. This means that you specify an integral time and the actual integration gain is dependent on the Throttling Range (TR). Specifically the integral time is the time in seconds that it should take for the integration result to be 100% if the error is held constant at the TR.
  • Page 17: Derivative Control

    Source: http://www.engineeringtoolbox.com/ The Honeywell LCBS Connect control can reduce ventilation in a building space with feedback from a CO2 sensor. As you can see from the table above, it is desirable to keep interior building space CO2 levels at 1,000 PPM or below during building occupancy periods.
  • Page 18: Adaptive Intelligent Recovery

    PPM level in the space. Demand Controlled Ventilation Summary LCBS Connect controllers can provide mitigation strategy based on the increase of CO2 as a "trace gas" indicating the fouling of oxygenated air. As described, this results in "woozy" building occupants and can also lead to illness as described in this document.
  • Page 19 It is absolutely essential that you understand concepts in diagram above so that you can commission an effective recovery strategy. Use LCBS Connect remote troubleshooting tools to help you set appropriate Adaptive Intelligent Recovery settings.
  • Page 20: Multispeed Fan

    VFD application The LCBS Controller sends a control signal to a VFD that changes frequency and the speed of the supply fan motor. LCBS Controller supports up to six discrete speeds. Each of the speeds can be assigned to a specific control "mode," like "ventilation, stage 1 cooling, stage 2 - 3 cooling, stage 1 heating,"...
  • Page 21 NOT use the two fan speed logic provided by LCBS controller. Two Speed and Multispeed VFD Application The LCBS Controller sends a control signal (0-10 VDC) to a VFD that changes frequency and the speed of the supply fan motor. NOTES: Consult with VFD manufacturer to ensure that the supply fan motor in your constant volume air handling unit is able to be controlled by the VFD.
  • Page 22 "soft start." This avoids starting jolts that create excess noise and mechanical wear on the system Electronic Direct Drive Motor (ECM, et al.) A direct-drive motor can received a control signal from the LCBS Controller that will change the supply fan motor speed. You will find that these are typically low horsepower applications, usually found is system less than five (5) tons.
  • Page 23: Theory And Operation Accessory Loops

    32°F to 110°F. Secondly, we need to determine how to operate the control circuit to energize and reenergize the blower coil fan and the gas or electric heating circuit. We need to examine the rating of the on-board relay on the LCBS Connect controller.
  • Page 24: Service Alerting Theory And Fundamentals

    As with the previous application, we need to examine the rating of the on-board relay on the LCBS Connect controller. As we now know, we find that we can control a 1.0 Amp control circuit at 24 VAC.
  • Page 25: How Does Service Alerting Work

    After you have this discussion with you and your staff, it would be good to write your thoughts down on accompanying form. Your Distributor or Honeywell sales professional is available to help you as well. Here are some examples shown below that will help you with develop your own meaningful alerts.
  • Page 26: Space Zone Carbon Dioxide Level Alert

    LCBS CONNECT SOLUTION NOTICE Design considerations. You have determined that it will get uncomfortable in the space when relative humidity exceeds 50%. This will drive the selection of the "alert limit." Further, you want to make sure that you don't have excessive alert activity, so you should set alert hysteresis at 15 minutes.
  • Page 27: Alerting Details

    LCBS CONNECT SOLUTION ALERTING DETAILS The following alerts can be activated for the "Alpha Version" of LCBS Connect. This description indicates what the alert is, how the alert can be used, and what the application benefits are for the alert.
  • Page 28 LCBS CONNECT SOLUTION Table 6. SENSOR DIGITAL HI LIMIT LOW LIMIT FAIL SENSOR NAME ALERTS ALERTS ALERTS ALERT DESCRIPTION AND USE CASES • • INDOOR RETURN AIR RELATIVE HUMIDITY (RH). THIS CAN HUMIDITY BE OF INTEREST TROUBLESHOOTING COOLING ISSUES. USE "TERMINAL LOAD, ZONE DEMAND"...
  • Page 29 NOTE: You CAN NOT access alerting setup, values and parameters from the LCBS Connect wall module. You can only set up, change and access alert messages via LCBS Connect Remote User Interface, your techs tablets, phones, and laptops! 31-00118EFS—01...
  • Page 30: Appendix, Wiring Diagrams

    MODULE HEAT 2 LCBS CONNECT – INFORMATION LCBS CONNECT – COMPONENTS SHOWN DESCRIPTION THIS IS A GENERAL TEMPLATE THAT INCLUDES ALL HONEYWELL DEVICES CONNECTED TO YCRL6438SR LCBS CONTROLLER (WITH WALL MODULE) APPROPRIATE INPUT, OUTPUT TERMINALS ON LCBS CONNECT CONTROLLER. MCR36707...
  • Page 31: Configurable Input And Output Assignments Wiring Diagram

    LOOP AUX CONTROL POINT LCBS CONNECT – INFORMATION LCBS CONNECT – COMPONENTS SHOWN DESCRIPTION THIS IS A GENERAL TEMPLATE THAT INCLUDES ALL HONEYWELL DEVICES CONNECTED TO YCRL6438SR LCBS CONTROLLER (WITH WALL MODULE) APPROPRIATE INPUT, OUTPUT TERMINALS ON LCBS CONNECT CONTROLLER.
  • Page 32: Fixed Input And Output Assignments Wiring Diagram

    SYLK BUS TRANSFORMER CONTROLLER POWER LCBS HEAT 1 CONTROLLER WALL MODULE HEAT 2 LCBS CONNECT – INFORMATION LCBS CONNECT – COMPONENTS SHOWN DESCRIPTION THIS IS A GENERAL TEMPLATE THAT INCLUDES ALL HONEYWELL DEVICES. YCRL6438SR LCBS CONTROLLER (WITH WALL MODULE) MCR36709 31-00118EFS—01...
  • Page 33: Two Heat Two Cool Integrated Economizer Single Temperature Changeover Limit

    HEAT 1 CONTROLLER WALL MODULE HEAT 2 LCBS CONNECT – INFORMATION LCBS CONNECT – COMPONENTS SHOWN DESCRIPTION EXAMPLE OF SEQUENCE OF OPERATION. THIS APPLICATION PROVIDES AUTOMATIC CONTROL OF TWO YCRL6438SR LCBS CONTROLLER (WITH WALL MODULE) STAGES OF GAS OR ELECTIR HEAT, TWO STAGES OF DIRECT EXPANSION COOLING, AND INTEGRATED...
  • Page 34: Two Heat Two Cool Integrated Economizer Differential Enthalpy Changeover And Temperature Limit

    HEAT 1 WALL MODULE HEAT 2 LCBS CONNECT – INFORMATION LCBS CONNECT – COMPONENTS SHOWN DESCRIPTION THIS APPLICATION PROVIDES AUTOMATIC CONTROL OF TWO STAGES OF GAS OR ELECTIR HEAT, TWO YCRL6438SR LCBS CONTROLLER (WITH WALL MODULE) STAGES OF DIRECT EXPANSION COOLING, AND INTEGRATED ECONOMIZER WITH DIFFERENTIAL ENTHALPY...
  • Page 35: Two Heat Two Cool Integrated Economizer Differential Enthalpy Changeover And Temperature Limit And Demand Controlled Ventilation

    CONTROL AND HIGH TEMPERATURE LIMIT (SEE APP GUIDE FOR HIGH LIMIT (SEE APP GUIDE FOR DETAILED C7250A MIXED AIR SENSOR SEQUENCE). THE APPLICATION FEATURES INPUT OF HONEYWELL CO2 SENSOR THAT PROVIDES INPUT TO C7250A DISCHARGE AIR SENSOR CO2 SEQUENCE. IF C02 LEVEL IN BUILDING SPACE EXCEEDS SETPOINT, OUTDOOR AIR DAMPER WILL OPEN...
  • Page 36: Three Heat Three Cool Multispeed Fan With Variable Frequency Drive

    LCBS HEAT 2 CONTROLLER WALL MODULE HEAT 3 LCBS CONNECT – COMPONENTS SHOWN LCBS CONNECT – INFORMATION DESCRIPTION THIS APPLICATION PROVIDES AUTOMATIC CONTROL OF THREE STAGES OF DIRECT EXPANSION COOLING AND YCRL6438SR LCBS CONTROLLER (WITH WALL MODULE) INTEGRATED ECONOMIZER WITH DIFFERENTIAL ENTHALPY CONTROL AND HIGH TEMPERATURE LIMIT (SEE...
  • Page 37: Single Stage Heat Pump With Economizer Differential Enthalpy Changeover And Temperature Limit

    CONTROLLER WALL MODULE AUX HEAT LCBS CONNECT – INFORMATION LCBS CONNECT – COMPONENTS SHOWN DESCRIPTION THIS APPLICATION PROVIDES AUTOMATIC CONTROL OF AN AIR TO AIR HEAT PUMP AND INTEGRATED YCRL6438SR LCBS CONTROLLER (WITH WALL MODULE) ECONOMIZER WITH DIFFERENTIAL ENTHALPY CONTROL AND HIGH TEMPERATURE LIMIT (SEE APP GUIDE FOR DETAILED SEQUENCE).
  • Page 38: Two Stage Heat Pump With Economizer Differential Enthalpy Changeover And Temperature Limit

    AUX HEAT 1 AUX HEAT CONTROLLER WALL AUX HEAT 2 MODULE LCBS CONNECT – COMPONENTS SHOWN LCBS CONNECT – INFORMATION DESCRIPTION THIS APPLICATION PROVIDES AUTOMATIC CONTROL OF AN AIR TO AIR HEAT PUMP AND INTEGRATED YCRL6438SR LCBS CONTROLLER (WITH WALL MODULE) ECONOMIZER WITH DIFFERENTIAL ENTHALPY CONTROL AND HIGH TEMPERATURE LIMIT (SEE APP GUIDE FOR DETAILED SEQUENCE).
  • Page 39: Simple Dehumidification

    TRANSFORMER(S) OR DESSICANT SYSTEM. IF A CALL FOR DEHUMIDIFICATION EXISTS, THE SELECTED SYSTEM OPERATES INDEPENDENTALY OF LCBS CONTROL FUNCTIONS. THE CONFIGURER CAN ALSO SET A “RUN ON TIMER” THAT OPERATES AFTER THE CALL FOR DEHUMIFICATION ABATES, UP TO 15 MINUTES.
  • Page 40: Two Speed Fan With Discrete Fan Outputs Two Heat And Two Cool

    CONTROLLER WALL MODULE HEAT 2 LCBS CONNECT – INFORMATION LCBS CONNECT – COMPONENTS SHOWN DESCRIPTION THIS APPLICATION PROVIDES AUTOMATIC CONTROL OF TWO STAGES OF DIRECT EXPANSION COOLING, YCRL6438SR LCBS CONTROLLER (WITH WALL MODULE) HEATING, AND INTEGRATED ECONOMIZER WITH TEMPERATURE LIMIT AND CHANGEOBOER (SEE APP GUIDE FOR DETAILED SEQUENCE).
  • Page 41: Outdoor Ambient Lighting Control With Photosensor Input To Control Outdoor Light Level

    LCBS CONNECT – INFORMATION LCBS CONNECT – COMPONENTS SHOWN DESCRIPTION THIS APPLICATION PROVIDES AUTOMATIC CONTROL VIA THE HONEYWELL ACCESSORY LOOP OPTION. YCRL6438SR LCBS CONTROLLER (WITH WALL MODULE) IN THIS CASE, WE CONFIGURE A LOOP TO CONTROL A SINGLE STAGE OF OUTDOOR LIGHTING (STAGED ACCESSORY LOOP) THIS IS A REVERSE ACTING LOOP…...
  • Page 42: Sylk Sensor Installation Relating To Lcbs Connect Controller

    LCBS CONNECT SOLUTION 14. Sylk Sensor Installation Relating to LCBS Connect Controller “SYLK” SENSORS – ACCEPTABLE CONFIGURATIONS DUE TO “FOUR POWER UNIT” LIMIT BUILDING NAME CVAHU RTU NAME DATE 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40...
  • Page 43 LCBS CONNECT SOLUTION 31-00118EFS—01...
  • Page 44 LCBS CONNECT SOLUTION By using this Honeywell literature, you agree that Honeywell will have no liability for any damages arising out of your use or modification to, the literature. You will defend and indemnify Honeywell, its affiliates and subsidiaries, from and against any liability, cost, or damages, including attorneys’...

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