Bard CH5S1, CH4S1, CH3S1 installation instructions Low voltage connections, Application

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low voltage connections

These units use a grounded 24 volt AC low voltage circuit and require at least a 2 stage heating and a 2 stage cooling thermostat.

“G” terminal is the fan input.

“Y” terminal is the compressor Stage 1 input. “Y1” terminal is the compressor Stage 2 input.

“B” terminal is the reversing valve input. The reversing valve must be energized for heating mode.

“R” terminal is 24 VAC hot.

“C” terminal is 24 VAC grounded.

“L” terminal is compressor lockout output. This terminal is activated on a high or low pressure trip by the electronic heat pump control. This is a 24 VAC output.

“W2” terminal is second stage heat (if equipped).

“O1” terminal is the ventilation input. This terminal energizes any factory or field installed ventilation option.

“DH” terminal is the dehumidifier input. This terminal energizes the factory or field installed dehumidifier option.

“E” terminal is the emergency heat input. This terminal energizes the emergency heat relay if equipped.

NOTE: For total and proper control using DDC, a minimum of 8 controlled outputs are required (6 if no ventilation or dehumidifier option

is installed). For proper system operation under Emergency Heat conditions where the compressor needs to be deactivated, the B-W2-E outputs need to be energized. Removing the Y (compressor) signal alone turns the compressor off, but does not activate the additional circuitry embedded in the heat pump for proper and complete operation.

low voltage connections

for ddc control

START UP

These units require R-410A refrigerant & Polyol Ester oil.

application:

1.Use separate service and manufacturing equipment to avoid cross contamination of oil and refrigerants.

2.Use recovery equipment rated for R-410A refrigerant.

3.Use manifold gauges rated for R-410A(800 psi/250 psi low).

4.R-410A is a binary blend of HFC-32 and HFC-125.

5.R-410A is nearly azeotropic - similar to R-22 and R-12. Although nearly azeotropic, charge with liquid refrigerant.

6.R-410A operates at 40-70% higher pressure than R-22, and systems designed for R-22 cannot withstand this higher pressure.

7.R-410A has an ozone depletion potential of zero, but must be reclaimed due to its global warming potential.

8.R-410A compressors use Polyol Ester oil.

9.Polyol Ester oil is hygroscopic; it will rapidly absorb moisture and strongly hold this moisture in the oil.

10.A liquid line dryer must be used - even a deep vacuum will not separate moisture from the oil.

11.Limit atmospheric exposure to 15 minutes - Maximum.

12.If compressor removal is necessary, always plug compressor immediately after removal. Purge with small amount of nitrogen when inserting plugs.

Fan Only

Energize G

Cooling Mode 1st Stage

Energize Y, G

Cooling Mode 2nd Stage

Energize Y, Y1, G

Heat Pump Heating 1st Stage

Energize Y, G, B

Heat Pump Heating 2nd Stage

Energize Y, Y1, G, B

3rd Stage Heating

Energize G, W2, Y, B, Y1

w/Heat Pump (if employed)

 

 

Ventilation

Energize G, O1

Dehumidifier

Energize DH

Emergency Heat

Energize B, W2, E, G

 

 

 

 

 

 

 

 

Manual

2100-455M

 

 

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Contents CH3S1 CH4S1 CH5S1 ModelsContents Getting Other Information and Publications For more information, contact these publishersHeat Pump Wall Mount Model Nomenclature CH 4S 1 aX X X Electric Heat TableCH3S1 Unit Dimensions Unit DimensionsCH4S1 and CH5S1 Unit Dimensions Electrical Specifications Single Circuit Dual CircuitShipping Damage GeneralDuct Work FiltersOPTiOnal top outlet flange Mounting the UnitCH3S1 Wall Mounting Instructions CH4S1 and CH5S1 Wall Mounting Instructions Optional Clearance Recommended Electric Heat ClearanceWall Mounting Instructions Return OpeningFalse Wall Installation Common Wall Mounting InstallationsThermostat Wire Size Wiring Main PowerTAP Range Low voltage connections ApplicationPressure Service Ports Important Installer NoteStart UP cont’d Phase Monitor Service HintsSequence of Operation COmpressor current & pressure control moduleDefrost Cycle Defrost Control BoardManual 2100-455M Solid State Heat Pump Control Troubleshooting Procedure TroubleshootingChecking Temperature Sensor Outside Unit Circuit Temperature F VS Resistance R of TemperatureFAN Blade Setting Dimensions Compressor SOlenoidRemoval of FAN Shroud Refrigerant CHARGeIndoor Blower Performance Maximum ESP of OperationTemperature Pressure TablePressure Table Troubleshooting GE ECM Motors Symptom Cause/ProcedureTroubleshooting GE ECM Motors Contd Replacing ECM Control Module
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CH3S1, CH5S1, CH4S1 specifications

Bard CH3S1, CH4S1, and CH5S1 represent a formidable trio of advanced technologies in the field of AI-driven natural language processing. These models are designed to facilitate seamless communication, enhance productivity, and deliver personalized experiences across various applications.

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As we progress to the CH4S1 model, we observe significant enhancements in contextual understanding. This model can handle more complex conversations, making it adept at tasks requiring greater cognitive processing, such as technical support and nuanced dialogue-based applications. The increased parameter count and refined training methods contribute to its ability to grasp intricate sentence structures and varied linguistic styles, leading to more coherent and relevant responses.

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In terms of technology, all three models utilize transformer architecture, which has proven effective in tasks requiring attention and context retention. They also implement reinforcement learning techniques to adapt and refine their models based on user engagement data. Furthermore, security and data privacy are prioritized, with strict adherence to ethical AI guidelines to ensure user trust.

Overall, the Bard CH series signifies a leap forward in artificial intelligence, combining advanced linguistic capabilities with a user-centric approach, thus redefining how we interact with machines and enhancing our digital experiences.