Envision Peripherals Geothermal Indoor Split Heat Pumps Unit Startup, Startup Steps

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ENVISION SERIES INSTALLATION MANUAL

Unit Startup

Before Powering Unit, Check The Following:

•High voltage is correct and matches nameplate.

•Fuses, breakers and wire size correct.

•Low voltage wiring complete.

•Piping completed and water system cleaned and flushed.

•Air is purged from closed loop system.

•Isolation valves are open, water control valves or loop pumps wired.

•Condensate line open and correctly pitched.

•Transformer switched to 208V if applicable.

•DIP switches are set correctly.

•DHW pump switch is “OFF” unless piping is completed and air has been purged.

•Blower rotates freely.

•Blower speed correct.

•Air filter/cleaner is clean and in position.

•Service/access panels are in place.

•Return air temperature is between 50-80ºF heating and 60-95ºF cooling.

•Check air coil cleanliness to insure optimum performance. Clean as needed according to maintenance guidelines. To obtain maximum performance the air coil should be cleaned before startup. A 10-percent solution of dishwasher detergent and water is recommended for both sides of coil, a thorough water rinse should follow.

Startup Steps

Notes: Complete the Equipment Start-Up/Commissioning Check Sheet during this procedure. Refer to thermostat operating instructions and complete the startup procedure.

1.Initiate a control signal to energize the blower motor. Check blower operation.

2.Initiate a control signal to place the unit in the cooling mode. Cooling setpoint must be set below room temperature.

3.First stage cooling will energize after a time delay.

4.Be sure that the compressor and water control valve or loop pump(s) are activated.

5.Verify that the water flow rate is correct by measuring the pressure drop through the heat exchanger using the P/T plugs and comparing to unit capacity data in specification catalog.

6.Check the temperature of both the supply and discharge water (see page 26-27).

7.Check for an air temperature drop of 15°F to 25°F across the air coil, depending on the fan speed and entering water temperature.

8.Decrease the cooling set point several degrees and verify high-speed blower operation.

9.Adjust the cooling setpoint above the room temperature and verify that the compressor and water valve or loop pumps deactivate.

10.Initiate a control signal to place the unit in the heating mode. Heating set point must be set above room temperature.

11.First stage heating will energize after a time delay.

12.Check the temperature of both the supply and discharge water (see page 26-27).

13.Check for an air temperature rise of 20°F to 35°F across the air coil, depending on the fan speed and entering water temperature.

14.If auxiliary electric heaters are installed, increase the heating setpoint until the electric heat banks are sequenced on. All stages of the auxiliary heater should be sequenced on when the thermostat is in the Emergency Heat mode. Check amperage of each element.

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Contents Envision Series Geothermal Indoor Split Heat Pumps 410A Refrigerant Ton Single Speed Ton Dual CapacityPhysical Characteristics Model NomenclatureTable of Contents General Installation Information Equipment Selection Utilizing Existing Coil or Air HandlerAir Handler Installation Connection to Air CoilDual Fuel Systems Water Piping Swivel Connections Residential UnitsAir Handler Coil Data Line Set SizesEnvision Matching Air Coil Surface Rows TubeOpen Loop Well Water Systems Solenoid ValveSolenoid Wiring Water QualityClosed Loop Ground Source Systems Multiple Units on One Flow CenterDesuperheater Connections Water Tank PreparationPlumbing Installation Desuperheater StartupThermostat Wiring ElectricalGeneral Electrical DataWiring Schematics 24V Accessory relay see SW2 3 for description of operationHp Total Microprocessor Control Fan G only Cooling OperationLockout Conditions Operation Logic Data STG1 STG2 STG3 Emerg Single Speed UnitsDIP Switch Settings Freeze Sensing SettingPosition Description System Service RefrigerationLeak Testing System EvacuationInitial System Charge Calculation Charging the SystemDetermining Subcooling Pressure/Temperature Coversion Chart for R-410A Unit Operating Parameters Single Speed ModelsDual Capacity Models Unit Startup Before Powering Unit, Check The FollowingStartup Steps Final Evaluation Unit Startup/Troubleshooting Heating Cycle AnalysisSingle Speed Pressure Drop and Recommended Flow RatesDual Capacity Troubleshooting LED Definitions and DiagnosticsStandard Microprocessor Controls Refrigerant SystemsPreventive Maintenance Replacement ProceduresPhysical Dimensions Envision NZ Split Dimensional DataInstallation 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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