ActronAir ESP Digital SRD131C Installation And Commissioning Manual

Installation and Commissioning Guide Split Ducted ESP DigitalInstallation and Commissioning Guide - Split Ducted ESP Digital UnitsDoc. No.0525-077 Ver. 2 200129312. Calculate the system super heat using the formula below:Superheat = SLT - SST3. If superheat is within the range (see charging table below), there is no need to add/remove refrigerant.• If superheat is lower than minimum, it means that liquid refrigerant may be returning to compressor. It isnecessary to remove refrigerant or check EEV settings.• If superheat is higher than maximum, it means that refrigeration capability of evaporator is not fullymaximised. It is necessary to add refrigerant charge or check EEV settings.Allow the systems to stabilise (15-30 mins) and repeat the step 1-3 until superheat falls within the range specified inthe table below.SUBCOOL AND SUPERHEAT TABLEModel COOLING HEATINGSUBCOOL SUPERHEAT SUBCOOL SUPERHEATESP Digital 4 - 8 2 - 8 10 - 14 2 - 8NOTESThe above subcool and superheat recommendations are based on the following rated conditions:• Cooling: 35oC DB outdoor, air entering indoor at 27oC DB / 19oC WB.• Heating: 7oC DB / 6oC WB outdoor, air entering indoor at 20oC DB Nominal indoor airflow.IMPORTANT INFORMATION FOR ESP DIGITAL UNIT (SRD)Force System to Operate at 100%To get 100% compressor operation for cooling and heating, adjust the wall control set temperature greater than4oC from room temperature.It maybe necessary to adjust the upper / lower limits to achieve the 4oC differential from set point. Details of upper/ lower limits are available in wall control operating instructions.Another method is to unwire the wall control sensor from the Wall Control or from indoor board. When using thismethod set the Wall Control to cool only or heat only mode.This will make the system detect a temperature greater then 4oC from set point and make the compressor run at 100%. Setcontroller to cooling or heating mode depending on your charging preference.Gauge ReadingWhen running at 100%, ESP system will operate the same as a standard (classic) ActronAir system, with gaugepressure operating as normal.When compressor is modulating, gauges reading will rise and fall.High pressure gauge will rise when the compressor is loaded and fall when the compressor is unloaded.Low pressure gauge will fall when the compressor is loaded and rise when the compressor is unloaded.For further info see www.actronair.com.auR-410A ESP QUICK COMMISSIONING GUIDEGauges During ModulationTypical Rise and Fall of Gauges during ModulationAuto Heat Cool Mode Operation Time ChartShowing Cooling to Heating change over.(SET TEMP + 4)ROOM TEMP( C)AMBIENTTEMP. WARMER COOLER