Envision Peripherals Geothermal Indoor Split Heat Pumps Open Loop Well Water Systems

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ENVISION SERIES INSTALLATION MANUAL

Open Loop - Well Water Systems

Typical open loop piping is shown below. Always maintain water pressure in the heat exchanger by placing water con- trol valves at the outlet of the unit to prevent mineral precipitation. Use a closed bladder type expansion tank to minimize mineral formation due to air exposure. Ensure proper water flow through the unit by checking pressure drop across the heat exchanger and comparing it to the figures in the unit capacity data tables in the specification catalog. Usually 1.5-2 GPM of flow per ton of cooling capacity is recommended in open loop applications. In dual capacity units, stage 1 is 70% of the total tonnage. Therefore, due to only minor differences in flow rate from low to high, only one solenoid valve should be used. The valve should be sized for full flow.

Discharge water from the unit is not contaminated in any manner and can be disposed of in various ways depending

on local building codes (i.e.

recharge well, storm sewer,

Figure 4: Typical Split System Application Open Loop - Well Water

drain field, adjacent stream or

 

 

 

 

 

pond, etc.). Most local codes

 

 

 

 

 

forbid the use of sanitary sewer

 

 

Thermostat Wire

 

for disposal. Consult your local

 

 

From Air Handler

Rubber Bladder

 

 

 

 

 

 

 

 

Pressure Tank

building and zoning depart-

 

 

 

 

 

 

 

Disconnect

Lineset

 

 

 

ments to ensure compliance in

 

 

 

To Air Handler

 

 

 

 

your area.

 

 

 

 

Water Solenoid

 

 

 

 

 

Control Valve

Notes: For open loop/ground- water systems or sytems that

Boiler Drains for System Flushing

Flow

do not contain an antifreeze solution, set SW2-Switch #2 to the “WELL” position (Refer to the table on page 21.) Slow opening/closing solenoid valves (type VM) are recommended to eliminate water hammer.

Regulator

Water Out

Water In

From W ell

Shut-Off Valves

P/T Plugs

Vibration Absorbing Pad or Air Pad

Figure 5: Open Loop Solenoid Valve Connection Option

Typical quick operating external 24V water solenoid valve (type PPV100 or BPV100) wiring.

Figure 9b: Open Loop Solenoid Valve Connection Option

Typical slow operating external 24V water solenoid valve (type VM) wiring.

SV

Solenoid

Valve

C

R

Acc Com

Acc NC

Acc NO

P1

1

2 P3

3

 

 

Violet(2)

CC

 

VM valve

 

 

CC

Blk(1)

CC-GND

Comfort

Violet(3)

 

 

Y1

 

 

Alert

Y2

Wht(4)

CCHI

 

 

 

 

Logic Board

10

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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 UnitsEnvision Matching Air Coil Surface Air Handler Coil DataLine Set Sizes 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 StartupGeneral Thermostat WiringElectrical 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 RefrigerationInitial System Charge Calculation Leak TestingSystem Evacuation 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 Standard Microprocessor Controls TroubleshootingLED Definitions and Diagnostics 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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