Mitsubishi Electronics 20-L, 20 PRH-5, 8, 10, 15 manual Features, High Sensible Cooling Capacity

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FEATURES

High Sensible Cooling Capacity

The sensible cooling capacity has been significantly improved through optimized heat exchanger design.

Comfort Heating

The PRH series are designed to provide effective heating even when the outside temperature is down to 0˚C. The PRH-L series are designed to provide effective heating even when the outside temperature is down to -10˚C.In addition, the twin circuit models, PRH-15,20YA, PRH-15,20YA-L are provided with control features that prevents both refrigeration circuits defrosting at the same time. This ensures constant comfort conditions during defrost and varying loads.

Highly Efficient Operation

The EER (Energy Efficiency Ratio) on these models is greatly improved by revised design specifications and by being manufactured stringently to Mitsubishi Electric high quality standards.

Flexibility of Supply Air Delivery

All series feature belt driven Supply Air fans enabling accurate matching of actual airflow rates to the specified quantities. Accurate commissioning is assisted by the capability to exchange pulleys and belts if necessary to achieve the desired air balance.

Labor Saving Installation

Because of the single unit configuration, all refrigeration work can be omitted. The unit operation can commence immediately after connection to the power supply, drain piping, ducting and control system.

Low Ambient Cooling

In applications with relatively high internal loads, there may be a requirement for all series to operate on cooling at low ambient conditions. An optional accessory is available to maintain the refrigeration circuit in balance at outdoor temperatures as low as 0˚C (PRH only).In case of PR,PRH-L is -5˚C. Please consult your local Mitsubishi Electric Sales office for application advice on this accessory.

Wide Electrical Control Capability

All series may be ordered in either of two control configurations.

The factory standard is for provision of a 24 volt terminal block to enable a field wired control of the contractors choice to be connected.

Alternatively, for models PR-5-10YC,PRH-5-10YA, PRH-5-10YA-L the intelligent "K" series remote control system may be ordered. The K control utilizes a microprocessor and includes liquid crystal display with touch pad for adjustment of control parameters.

These options give the flexibility to enable connection to Building Management Systems, smoke spill cycles, economy cycles, remote monitoring etc.

Please consult your local Mitsubishi Electric Sales office for application advice on these controls.

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Image 6 Contents
Data Book Heat Pump Contents Safety for USE For correct installationDo not wash the unit with water Complete Line UP Features High Sensible Cooling CapacityMechanical Specifications DescriptionsTypical Installation Example PRH PRH-LSpecifications GrossElectrical Data CoolingHeating Factor for Various Air Flow Capacity TablesCooling Capacity Nominal Air FlowPR-5YC,PRH-5YA,PRH-5YA-L PR-5YC PRH-5YA-LHeating Capacity Nominal Air FlowPRH-5YA,PRH-5YA-L Range PRH-5YACooling Capacity Nominal Air FlowPR-8YC,PRH-8YA,PRH-8YA-L PR-8YC PRH-8YA-L PRH-8YAHeating Capacity Nominal Air FlowPRH-8YA,PRH-8YA-L PR-8YC PRH-8YA-LPRH-8YA Cooling Capacity Nominal Air FlowPR-10YC,PRH-10YA,PRH-10YA-L PR-10YC PRH-10YA-L PRH-10YAHeating Capacity PRH-10YA-LPRH-10YA Cooling Capacity Nominal Air FlowPR-15YC,PRH-15YA,PRH-15YA-L PR-15YC PRH-15YA-L PRH-15YAPR-15YC PRH-15YA-L PRH-15YACooling Capacity Nominal Air FlowPR-20YC,PRH-20YA,PRH-20YA-L PR-20YC PRH-20YA-L PRH-20YAPRH-20YA-L PRH-20YAPRH-YA Operation rangePR-YC PRH-YA-LFAN Performance RpmOperation range Fan speed Pressure Pulley outside dimensions are shown below Unit mm NC Curves PR-5YC PRH-5YA PRH-5YA-L PR-8YC PRH-8YA PRH-8YA-LPR-10YC PR-15YCOutline Dimensions PR-20YCPR-8,10YC PRH-8, 10YA PRH-8, 10YA-L PR-15,20YC PRH-15, 20YA PRH-15, 20YA-LWiring Diagrams PR-5, 8, 10YC StandardPR-15, 20YC Standard PR-5, 8, 10YC Special Order K ControlSpecial Order LOW Temperature Internal ProtectorPR-15, 20YC Special Order K Control & LOW Temperature 50HertzPRH-5, 8, 10YA PRH-5, 8, 10YA-L StandardPRH-15, 20YA-L Standard PRH-5, 8, 10YA PRH-5, 8, 10YA-L 10YA PRH-15, 20YA PRH-15, 20YA-L 21S4 Way valve OFF 52C OFF MC Stop MF2 Stop RL on CH on Service Call Electrical Operation Flow ChartsMC Operate MF2 Operate OFF Safety Device OFF? YES MF1 Operate YESMF1 Operate Start Power on Start Power on Refrigerant Schematics PR-5YCPR-8, 10, 15, 20YC PRH-8, 10, 15, 20YA PRH-8, 10,15,20YA-L Safety & Control Devices Accessory AvailabilityPhysical Data ElectricalRooftop Package AIR Cooled Heatpump and Cooling only Units Installation ClearancesRoof Mounting Duct Work Drain pipingElectrical Wiring Final ChecksTrial Operation Instructions for USE Check Points for OperationMaintenance FingermarksTroubleshooting Preparing for Operation After Prolonged ShutdownPreparing for Prolonged Shutdown Specification Guidelines Memo Mitsubishi Electric Corporation Data Book PR,PRH