Heat Controller HEV/H manual HOT Water Generator, Typical HWG Installation

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Heat Controller, Inc.

HEV/H SERIES

Installation, Operation & Maintenance

 

 

 

HOT WATER GENERATOR

The HWG (Hot Water Generator) or desuperheater option provides considerable operating cost savings by utilizing heat energy from the compressor discharge line to help satisfy domestic hot water requirements. The HWG is active throughout the year, providing virtually free hot water when the heat pump operates in the cooling mode or hot water at the COP of the heat pump during operation in the heating mode.

Heat pumps equipped with the HWG option include a built- in water to refrigerant heat exchanger that eliminates the need to tie into the heat pump refrigerant circuit in the field. The control circuit and pump are also built in for residential equipment. Figure 14 shows a typical example of HWG water piping connections on a unit with built-in circulating pump. This piping layout prevents sludge/debris from the bottom of the tank being pulled into the HWG pump.

The temperature set point of the HWG is field selectable to 125°F or 150°F . The 150°F set point allows more heat storage from the HWG. For example, consider the amount of heat that can be stored by the HWG when using the 125°F set point, versus the amount of heat that can be generated by the HWG when using the 150°F set point.

In a typical 50 gallon two-element electric water heater the lower element should be turned down to 100°F, or the lowest setting, to get the most from the HWG. The tank will eventually stratify so that the lower 80% of the tank, or 40 gallons, becomes 100°F (controlled by the lower element). The upper 20% of the tank, or 10 gallons, will be maintained at 125°F (controlled by the upper element).

Using a 125°F set point, the HWG can heat the lower 40 gallons of water from 100°F to 125°F, providing up to 8,330

Typically a single tank of at least 50 gallons (189 liters) is used to limit installation costs and space. However, a dual tank, as shown in Figure 21, is the preferred system, as it provides the maximum storage and temperate source water to the HWG.

It is always advisable to use water softening equipment on domestic water systems to reduce the scaling potential and lengthen equipment life. In extreme water conditions, it may be necessary to avoid the use of the HWG option since the potential cost of frequent maintenance may offset or exceed any savings. Consult Table 3 for scaling potential tests.

Figure 14: Typical HWG Installation

 

Hot Outlet

Cold

 

to home

Inlet

 

 

 

Shut Off

 

 

 

Valve #1

 

 

 

Shut Off

 

 

 

Valve #4

 

 

 

Upper

 

 

 

element to

 

 

 

120 - 130°F

 

 

 

[49 - 54°C]

 

 

 

Lower

 

Powered

element to

 

Water

 

100 - 110°F

Shut-off

Heater

[38 - 43°C]

Valve #3

 

 

 

Shut Off

 

 

 

Valve #2

 

 

 

 

Field supplied 3/4’ brass nipple and ‘T’

Insulated water lines -

5/8” OD, 50 ft maximum (one way) [16mm OD, 15 meters maximum]

Figure 15: HWG Double Tank Installation

Hot Outlet to

house

btu’s of heat. Using the 150°F set point, the HWG can heat the same 40 gallons of water from 100°F to 150°F and the remaining 10 gallons of water from 125°F to 150°F, providing

Cold Inlet from

Domestic supply

Hot Outlet

Cold Inlet

a total of up to 18,743 btu’s of heat, or more than twice as much heat as when using the 125°F set point.

Dual element electric water heaters are recommended. If a gas, propane, oil or electric water heater with a single element is used, a second preheat storage tank is recommended to insure a usuable entering water temperature for the HWG.

WARNING!

WARNING! A 150°F SETPOINT MAY LEAD TO SCALDING OR BURNS. THE 150°F SET POINT MUST ONLY BE USED ON SYSTEMS THAT EMPLOY AN APPROVED ANTI-SCALD VALVE.

 

Shut-off

Upper element to 130°F [54°C]

 

Valve #1

(or owner preference)

 

 

 

Shut-off

 

 

Valve #4

 

 

Powered

 

 

Water Heater

Lower element to 120°F [49°C]

 

Unpowered

 

Shut-off

Water Heater

 

 

 

Valve #3

 

 

Shut Off

 

 

Valve #2

 

 

 

Field Supplied 3/4” brass nipple and “T”

Insulated water lines - 5/8” OD, 50 ft maximum (one way)

 

[16mm OD, 15 meters maximum]

 

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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 UnitsHorizontal Unit Location Vertical InstallationMounting Horizontal Units Typical Closed Loop Horizontal Unit Installation Horizontal InstallationField Conversion of Air Discharge Field Conversion of AIR DischargeSide to Back Discharge Conversion GROUND-LOOP Heat Pump Applications Water Connection InstallationAntifreeze Low Water Temperature Cutout Setting DXM2 ControlOpen Loop Ground Water Systems GROUND-WATER Heat Pump ApplicationsWater Quality Standards Flow Regulation Water Coil Low Temperature Limit SettingExpansion Tank and Pump Water Control ValveWater Quality Standards Water Quality StandardsHOT Water Generator Typical HWG InstallationInstallation Initial Start-Up Water Tank PreparationHWG Water Piping Water Tank RefillElectrical Line Voltage General Line Voltage WiringElectrical Line Voltage Volt Operation Electrical Power WiringPower Connection HWG WiringLow Water Temperature Cutout Selection Electrical LOW Voltage WiringThermostat Connections Taco Valve Accessory ConnectionsThermostat Thermostat Installation Electrical Thermostat WiringECM Blower Control ECM Blower Performance Data Table Blower Performance DataWiring Diagram Unit Operation DXM2 ControlsP11 DXM2 Layout and ConnectionsOperating Limits Unit Commissioning and Operating ConditionsCommissioning Conditions Unit Starting and Operating Conditions Unit START-UP and Operating Conditions Unit Start-up ProcedureUnit and System Checkout 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.