Heat Controller HEV/H manual Expansion Tank and Pump, Water Control Valve, Flow Regulation

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Heat Controller, Inc.

HEV/H SERIES

Installation, Operation & Maintenance

 

 

 

GROUND-WATER HEAT PUMP APPLICATIONS

Expansion Tank and Pump

Use a closed, bladder-type expansion tank to minimize mineral formation due to air exposure. The expansion tank should be sized to provide at least one minute continuous run time of the pump using its drawdown capacity rating to prevent pump short cycling. Discharge water from the unit is not contaminated in any manner and can be disposed of in various ways, depending on local building codes (e.g. recharge well, storm sewer, drain field, adjacent stream or pond, etc.). Most local codes forbid the use of sanitary sewer for disposal. Consult your local building and zoning department to assure compliance in your area.

Water Control Valve

Note the placement of the water control valve in Figure 13. Always maintain water pressure in the heat exchanger by placing the water control valve(s) on the discharge line to prevent mineral precipitation during the off-cycle. Pilot operated slow closing valves are recommended to reduce water hammer. If water hammer persists, a mini-expansion tank can be mounted on the piping to help absorb the excess hammer shock. Insure that the total ‘VA’ draw of the valve can be supplied by the unit transformer. For instance, a slow closing valve can draw up to 35VA. This can overload smaller 40 or

50 VA transformers depending on the other controls in the circuit. A typical pilot operated solenoid valve draws approximately 15VA.

Flow Regulation

Flow regulation can be accomplished by two methods. One method of flow regulation involves simply adjusting the ball valve or water control valve on the discharge

line. Measure the pressure drop through the unit heat exchanger, and determine flow rate from Table 10C. Since

the pressure is constantly varying, two pressure gauges may be needed. Adjust the valve until the desired flow of

1.5to 2 gpm per ton [2.0 to 2.6 l/m per kW] is achieved. A second method of flow control requires a flow control device mounted on the outlet of the water control valve. The device is typically a brass fitting with an orifice of rubber or plastic material that is designed to allow a specified flow rate. On occasion, flow control devices may produce velocity noise that can be reduced by applying some back pressure from the ball valve located on the discharge line. Slightly closing the valve will spread the pressure drop over both devices, lessening the velocity noise. NOTE: When EWT is below 50°F [10°C], 2 gpm per ton (2.6 l/m per kW) is required.

Water Coil Low Temperature Limit Setting

For all open loop systems the 30°F [-1.1°C] FP1 setting (factory setting-water) should be used to avoid freeze damage to the unit. See “Low Water Temperature Cutout Selection” in this manual for details on the low limit setting.

Figure 13: Typical Open Loop/Well Application

Unit Power

Disconnect

 

Water

Flow

 

 

Regulator

Pressure

 

Control

 

Valve

 

Tank

 

 

 

Water Out

 

 

 

Water In

Air Pad or

Thermostat

 

Shut-Off

 

Valve

Extruded

 

Wiring

 

Optional

polystyrene

 

 

 

Filter

insulation board

 

 

 

Boiler

 

 

 

 

 

P/T Plugs

Drains

 

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Contents Residential Packaged Geothermal Heat Pump Table of Contents Unit Nomenclature Configuration Supply AIR OptionsSafety General Information Vertical Upflow Physical DataHE Vertical Upflow Dimensional Data Return Connection Standard Deluxe Filter Frame Vertical Unit Location Vertical InstallationCondensate Piping for Vertical Units Sound Attenuation for Vertical UnitsMounting Horizontal Units Vertical InstallationHorizontal Unit Location Typical Closed Loop Horizontal Unit Installation Horizontal InstallationSide to Back Discharge Conversion Field Conversion of AIR DischargeField Conversion of Air Discharge GROUND-LOOP Heat Pump Applications Water Connection InstallationAntifreeze Low Water Temperature Cutout Setting DXM2 ControlWater Quality Standards GROUND-WATER Heat Pump ApplicationsOpen Loop Ground Water Systems Expansion Tank and Pump Water Coil Low Temperature Limit SettingWater Control Valve Flow RegulationWater Quality Standards Water Quality StandardsHOT Water Generator Typical HWG InstallationInstallation HWG Water Piping Water Tank PreparationWater Tank Refill Initial Start-UpElectrical Line Voltage General Line Voltage WiringElectrical Line Voltage Power Connection Electrical Power WiringHWG Wiring Volt OperationThermostat Connections Electrical LOW Voltage WiringLow Water Temperature Cutout Selection Thermostat Accessory ConnectionsTaco Valve Thermostat Installation Electrical Thermostat WiringECM Blower Control ECM Blower Performance Data Table Blower Performance DataWiring Diagram Unit Operation DXM2 ControlsP11 DXM2 Layout and ConnectionsCommissioning Conditions Unit Commissioning and Operating ConditionsOperating Limits Unit Starting and Operating Conditions Unit and System Checkout Unit Start-up ProcedureUnit START-UP and Operating Conditions Unit START-UP Procedure Unit START-UP ProcedureHE Coax Water Pressure Drop Unit Operating ConditionsHE Series Typical Unit Operating Pressures and Temperatures Unit Operating Conditions Preventive Maintenance Troubleshooting Start DXM2 Process Flow ChartFault Htg Clg Possible Cause Solution Functional TroubleshootingIFC Fault Code 410A Troubleshooting FormHEV/H Series 97B0016N11

HEV/H specifications

The Heat Controller HEV/H series represents a significant advancement in heating technology, designed to provide efficient and effective climate control for both residential and commercial spaces. This innovative range of heat pumps combines cutting-edge features with user-friendly functionality to offer a reliable solution for modern heating needs.

One of the standout features of the HEV/H series is its advanced inverter technology. This system allows the heat pump to adjust its output based on the specific heating requirements of the environment. By varying the compressor's speed, the HEV/H maintains a consistent temperature while significantly reducing energy consumption. This not only lowers utility bills but also reduces environmental impact, making it a more sustainable option compared to traditional heating methods.

The HEV/H series is equipped with a high-efficiency heat exchanger, which maximizes heat transfer and enhances overall performance. This component ensures that the system can operate effectively even in colder climates, providing reliable heating throughout the winter months. Additionally, the unit’s low noise operation is designed to maintain a peaceful environment, making it suitable for bedrooms, offices, and other noise-sensitive areas.

Another notable characteristic of the HEV/H series is its smart control features. Integrated with Wi-Fi connectivity, users can conveniently manage their heating settings remotely via a smartphone app. This feature allows for customized scheduling and temperature control, ensuring optimal comfort and convenience. Users can also receive real-time notifications on energy consumption and system performance, enhancing user engagement and control.

The HEV/H series also emphasizes durability and longevity. Constructed with high-quality materials, the units are designed to withstand the rigors of daily use while requiring minimal maintenance. The incorporation of advanced filtration systems helps to improve indoor air quality by capturing dust and allergens, which is especially beneficial for individuals with allergies or respiratory issues.

In summary, the Heat Controller HEV/H series exemplifies modern heating technology with its combination of efficiency, control, and user-friendly features. Its inverter technology, high-efficiency heat exchangers, smart connectivity, and durable construction make it an outstanding choice for anyone seeking to enhance their indoor climate while being conscious of energy usage and environmental impact. Whether for a home or business, the HEV/H series is poised to deliver exceptional heating solutions tailored to diverse needs.
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