Envision Peripherals Geothermal Indoor Split Heat Pumps Cooling Operation, Fan G only

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ENVISION SERIES INSTALLATION MANUAL

Microprocessor Control (cont.)

Cooling Operation

In all cooling operations, the reversing valve directly tracks the “O” input. Thus, anytime the “O” input is present, the reversing valve will be energized.

Cool, 1st Stage (Y1,O)

The blower motor and hot water pump are started immediately, the loop pump(s) is energized 5 seconds after the “Y1” input is received. The compressor will be energized (on low capacity for Dual Capacity units) 10 seconds after the “Y1” input. The ECM blower will shift from low to medium speed 15 seconds after the “Y1” input (85% of medium speed if in dehumidification mode).

Cool, 2nd Stage (Y1, Y2, O) Single Speed Units

The fan changes to high speed (85% of high speed if in dehumidification mode) 15 seconds after the “Y2” input (ECM only).

Cool, 2nd Stage (Y1, Y2, O) Dual Capacity Units

The second stage compressor will be activated 5 seconds after receiving a “Y2” input as long as the minimum first stage compressor run time of 1 minute has expired. The ECM blower changes to high speed 15 seconds after the “Y2” input (85% of high speed if in dehumidification mode). The Comfort Alert will delay the second stage compressor until 5 seconds after it receives a “Y2” from the board.

Fan (G only)

The fan starts on low speed (PSC ON). Regardless of fan

input “G” from thermostat, the fan will remain on low speed for 30 seconds at the end of each heating, cooling or emergency heat cycle.

Lockout Conditions

During lockout mode, the appropriate unit and thermostat lockout LEDs will illuminate. The compressor, loop pump, hot water pump, and accessory outputs are de-energized. The fan will continue to run on low speed. If the thermostat calls for heating, emergency heat operation will occur.

Comfort Alert lockouts cannot be reset at the thermostat. All other lockout modes can be reset at the thermostat after turning the unit off, then on, which restores normal operation but keeps the unit lockout LED illuminated. Interruption of power to the unit will reset a lockout without a waiting period and clear all lockout LEDs.

High Pressure

This lockout mode occurs when the normally closed safety switch is opened momentarily (set at 600 PSI).

Low Pressure

This lockout mode occurs when the normally closed low pressure switch is opened for 30 continuous seconds (set at 40 PSI). A low pressure fault may also be indicated when a Comfort Alert lockout has occurred.

Freeze Sensing (Water Flow)

This lockout mode occurs when the freeze thermistor temperature is at or below the selected freeze point (well 30°F or loop 15°F) for 30 continuous seconds.

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Contents 410A Refrigerant Ton Single Speed Ton Dual Capacity Envision Series Geothermal Indoor Split Heat PumpsModel Nomenclature Physical CharacteristicsTable of Contents General Installation Information Utilizing Existing Coil or Air Handler Equipment SelectionConnection to Air Coil Air Handler InstallationDual Fuel Systems Swivel Connections Residential Units Water PipingRows Tube Air Handler Coil DataLine Set Sizes Envision Matching Air Coil SurfaceSolenoid Valve Open Loop Well Water SystemsWater Quality Solenoid WiringMultiple Units on One Flow Center Closed Loop Ground Source SystemsWater Tank Preparation Desuperheater ConnectionsDesuperheater Startup Plumbing InstallationElectrical Data Thermostat WiringElectrical General24V Accessory relay see SW2 3 for description of operation Wiring SchematicsHp Total Microprocessor Control Fan G only Cooling OperationLockout Conditions STG1 STG2 STG3 Emerg Single Speed Units Operation Logic DataFreeze Sensing Setting DIP Switch SettingsRefrigeration Position Description System ServiceCharging the System Leak TestingSystem Evacuation Initial System Charge CalculationDetermining Subcooling Pressure/Temperature Coversion Chart for R-410A Single Speed Models Unit Operating ParametersDual Capacity Models Unit Startup Before Powering Unit, Check The FollowingStartup Steps Final Evaluation Heating Cycle Analysis Unit Startup/TroubleshootingSingle Speed Pressure Drop and Recommended Flow RatesDual Capacity Refrigerant Systems TroubleshootingLED Definitions and Diagnostics Standard Microprocessor ControlsReplacement Procedures Preventive MaintenanceEnvision NZ Split Dimensional Data Physical DimensionsInstallation Notes

Geothermal Indoor Split Heat Pumps specifications

Envision Peripherals has established itself as a leader in the energy-efficient heating and cooling market with its advanced geothermal indoor split heat pumps. These systems are designed to utilize the earth's stable underground temperature as a renewable energy source, resulting in remarkable performance and sustainability.

One of the main features of Envision Peripherals geothermal indoor split heat pumps is their exceptional energy efficiency. With the ability to achieve a coefficient of performance (COP) exceeding 4.0, these heat pumps provide four units of heating or cooling for every unit of electricity consumed. This level of efficiency significantly reduces operational costs and lowers environmental impact, making them an ideal choice for eco-conscious consumers.

The technology employed in these systems emphasizes reliability and flexibility. The heat pumps are equipped with variable speed compressors, allowing them to adjust the heating and cooling output based on the current demands of the space. This results in consistent indoor temperatures and enhanced comfort. Moreover, the systems can seamlessly integrate with existing HVAC infrastructures, offering versatile installation options for residential and commercial applications.

Another characteristic that sets Envision Peripherals geothermal systems apart is their dual functionality. These units not only provide heating during the colder months but also excel in cooling during hot weather conditions. The geothermal heat pumps extract heat from the indoor air and transfer it to the ground, ensuring an efficient cooling process without the need for traditional air conditioning systems.

Durability and low maintenance are key aspects of Envision Peripherals heat pumps. Constructed with high-quality materials and advanced engineering, these systems are built to withstand varying environmental conditions. They feature a closed-loop system that minimizes wear and tear, reducing the frequency of repairs and providing homeowners and businesses with peace of mind.

In addition, Envision Peripherals emphasizes eco-friendliness. The use of renewable geothermal energy diminishes dependence on fossil fuels, contributing to a more sustainable living and working environment. Their commitment to sustainability aligns with global efforts to reduce greenhouse gas emissions and combat climate change.

In summary, Envision Peripherals geothermal indoor split heat pumps deliver exemplary energy efficiency, advanced technology, and a range of benefits, including dual functionality and reduced environmental impact. As the demand for sustainable heating and cooling solutions continues to grow, these systems represent a leading choice for consumers seeking comfort and energy savings.
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