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General| Model | YSC036G |
|---|---|
| Refrigerant | R-410A |
| Voltage | 208/230V |
| Phase | 1 |
| Sound Level (Outdoor Unit) | 72 dB |
| Cooling Capacity | 36000 BTU/h |
Procedures for inspecting the unit upon arrival for shipping damage and verification.
Overview of unit construction, testing, and control systems offered.
Explanation of electromechanical and ReliaTel™ controls for the economizer actuator.
Operation of the clogged filter switch and its diagnostic signal.
How the condensate overflow switch functions to shut down the unit.
Accessing and requirements for filter installation.
Function of the low pressure control in stopping compressor operation.
How the high pressure control stops compressor operation.
Description of the Zone Sensor Module with basic system and fan settings.
Features of the 7-day programmable zone sensor for scheduling.
Use of the bullet-type temperature sensor for ambient or remote sensing.
Input for the Frostat™ control to prevent evaporator freezing.
Function of the smoke detector for unit shutdown.
Monitors 3-phase power supply for voltage and phase sequence.
Intuitive user interface for commissioning and troubleshooting.
Warnings and precautions for handling fiberglass wool, including PPE requirements.
Minimum operating and service clearances for single and multiple unit installations.
Instructions and warnings for unit foundation and support structures.
Diagrams showing supply and return air openings for different unit configurations.
Procedures for selecting and installing roof curbs for unit placement.
Safety warnings regarding clearances between the unit and combustible materials.
Safety instructions and procedures for lifting and rigging the unit.
Checklist of steps required for successful commercial unit installation.
Instructions for ensuring the factory-installed economizer is in the correct operating position.
Completing unit power wiring connections and providing proper grounding.
Location and termination points for through-the-base electrical wiring.
Steps to reconfigure the drain pan for front drainage.
Steps to reconfigure the drain pan for through-the-base drainage.
Precautions and steps for removing the drain pan with the overflow switch.
Completing unit power wiring connections and providing proper grounding.
Location and termination points for through-the-base electrical wiring.
Information about the 24 volt control power transformers and their circuit breakers.
Guidelines for installing connecting wiring for 24 Vac controls.
Guidelines for conductor sizing when connecting DC analog input/output signals.
Requirements for three-phase power supply voltage to prevent motor failure.
Ensuring correct power supply phasing for three phase motors.
Importance of crankcase heaters for oil temperature and preventing foaming.
Self-diagnostic checks and operation of the RTRM upon power initialization.
Overview of unit operation for electromechanical and ReliaTel™ controls.
Explanation of ReliaTel™™ CV control features and RTRM operation.
Sequence for ReliaTel™ cooling operation without an economizer.
Operation sequence for high efficiency units with three stages of cooling.
Evaporator fan operation for cooling-only units under ReliaTel™ control.
How ReliaTel™™ units operate in low ambient conditions.
Notes on multi-speed indoor fan availability and control.
Sequence of operation for multi-zone VAV applications.
Action taken if supply air pressure exceeds the fixed limit.
Control of supply air temperature using economizer or primary cooling.
Adjusting supply air temperature setpoint based on other sensor inputs.
Control of zone temperature based on various setpoints and modes.
Setting the discharge air cool setpoint for VAV units.
How the economizer is used to control zone temperature with ReliaTel controls.
Operation of multi-speed fans when economizing or in cooling stages.
Optimizing indoor motor speed for cooling demand in single zone VAV.
Purge cycle for compressor reliability in dehumidification/reheat configurations.
How the economizer controls zone temperature with ReliaTel™ controls.
Heating operation sequence for cooling-only units with ReliaTel controls.
Heating operation sequence for gas units with ReliaTel controls.
Self-check and operation of the ignition module for gas heat.
Overview of electromechanical and ReliaTel™ control options.
Cooling operation sequence for electromechanical controls without an economizer.
Evaporator fan operation for gas units using electromechanical controls.
Evaporator fan operation for cooling-only units with electromechanical controls.
Adjusting the minimum position potentiometer for economizer ventilation.
Cooling operation with an economizer using electromechanical controls.
Heating operation for gas units with electromechanical controls.
Performance and reliability of units with 5-tap direct drive indoor fans.
Procedures for verifying correct airflow and fan performance.
Using the Service Test Guide for ReliaTel™™ controls.
Performance and reliability of units with belt drive indoor fans.
Performance and reliability for direct drive fans with electromechanical controls.
Performance and reliability for ReliaTel™™ units with direct drive indoor fans.
Performance and reliability for units with constant CFM direct drive indoor fans.
Airflow adjustment procedure for 17 Plus units with constant CFM direct drive fans.
Sequence of operation for traditional VAV applications.
Maintaining selectable supply air temperature in cooling and heating modes.
Controlling supply air temperature with an economizer.
Operation of the VHR relay output during unoccupied mode.
Control of zone temperature in unoccupied cooling without advanced controls.
Activation of Morning Warm-up for occupied mode temperature control.
Measuring and controlling supply duct static pressure.
Resetting supply air temperature based on various sensor inputs.
Function and maintenance of the return air smoke detector.
Minimum position setting procedures for economizers.
Procedures for starting compressors and checking operation.
Safety warnings and procedures related to the dehumidification option.
Final checks before leaving the unit after installation and start-up.
Instructions for adjusting and replacing fan belts on belt drive units.
Routine checks and maintenance tasks performed monthly.
Inspecting and maintaining unit air filters.
Maintenance tasks specific to the cooling season.
Maintenance tasks specific to the heating season.
Procedure for removing the hail guard to access coils.
Cleaning instructions for microchannel coils, emphasizing safe methods.
Cleaning instructions for round tube plate fin coils.
Unit diagnostics and system status information available through the RTRM.
Methods for checking system status via zone sensor LEDs or voltage readings.
Resetting system from the space via the zone sensor mode switch.
Checking voltage for system failure indications.
Verifying heat failure using the Ignition Module LED indicator.
Troubleshooting cooling failures based on sensor and control circuit issues.
Procedures for testing zone temperature sensors and setpoints.
Testing the ZTEMP thermistor resistance at various temperatures.
Measuring resistance of CSP and HSP potentiometers.
Methods for testing LEDs using a meter and checking unit operation.
Measuring the DC mA output signal of the relative humidity sensor.
Verifying economizer actuator status via LED indicator.
Methods for resetting cooling failures and ignition lockouts.
Tests to diagnose problems in the system economizer operation.
Verifying the functionality of the economizer actuator (ECA).
Testing the ECA resistors and sensors.
