HEAT CONTROLLER, INC. WATER-SOURCE HEAT PUMPS

R e s i d e n t i a l S p l i t - 6 0 H z R 4 1 0 A

R e v. : 0 3 A u g u s t , 2 0 1 2

Electrical - Low Voltage

Figure 22: HTS Low Voltage Field Wiring

Low Voltage Field Wiring

Low Water Temperature Cutout Selection

The DXM2 control allows the field selection of low water (or water-antifreeze solution) temperature limit by clipping jumper JW3, which changes the sensing temperature associated with thermistor LT1. Note that the LT1 thermistor is located on the refrigerant line between the coaxial heat exchanger and expansion device (TXV). Therefore, LT1 is sensing refrigerant temperature, not water temperature, which is

a better indication of how water flow rate/temperature is affecting the refrigeration circuit.

The factory setting for LT1 is for systems using water (30°F [-1.1°C] refrigerant temperature). In low water temperature (extended range) applications with antifreeze (most ground loops), jumper JW3 should be clipped as shown in Figure 23 to change the setting to 10°F [-12.2°C] refrigerant temperature, a more suitable temperature when using

an antifreeze solution. All residential units include water/ refrigerant circuit insulation to prevent internal condensation, which is required when operating with entering water temperatures below 59°F [15°C].

Figure 23: LT1 Limit Setting

 

 

HP

Fault

Status

LP

LP

 

 

 

 

LT1

 

 

LT1

Accessory Connections

A terminal paralleling the compressor contactor coil has been provided on the DXM2 control. Terminal “A” is designed to control accessory devices. Note: This terminal should be used only with 24 Volt signals and not line voltage. Terminal “A” is energized with the compressor contactor.

Figure 23a: Accessory Wiring

Terminal Strip

C

 

 

 

 

DXM2

24VAC

P2

 

 

A

Motorized Modulating Water Control Valve - Open Loop Ground Water Systems Only

An external valve should be used on ground water systems to shut off flow when the compressor is not operating. Valve kit AMMV4D is available for use with HTS024-048, and kit AMMV5E is used with HTS060. See Figure 23b or the unit wiring diagram for valve wiring detail. Further details on valve operation are described later in this manual.

Figure 23b: Motorized Modulating Water Control Valve - Open Loop Ground Water Systems Only

P3

DXM 2

P11

For MWV option, place jumper on 0-10V pins.

c1 ay

c2 ay

Off On

1 2 3 4

S3 Off On

1 2 3 4 5 6 7 8

S1

Off On

1 2 3 4 5 6 7 8

S2

A0-1 A0-2

 

 

LT2

JW3

 

LT2

 

RV

 

 

 

 

RV

 

12

CO

 

CO

 

RV

P7

CCH

Relay

 

1

24Vdc

Relay

 

 

 

4

EH1

 

EH2

 

Comp

P6

 

Relay

 

 

 

CCG

JW3-LT1

jumper should

be clipped

for low

temperature

(antifreeze)

operation

Ensure actuator direction switch is set as shown.

P11

 

 

 

 

P10

 

 

P9

CC

 

 

 

 

 

 

 

AO2 Gnd

T1

T2

T2

T3

T3

T4

T4

 

T5

T5

T6

T6

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

DXM2 PCB

24

Heat Controller, Inc. Water-Source Heating and Cooling Systems

Page 24
Image 24
Heat Controller HTS SERIES manual Electrical Low Voltage, Low Water Temperature Cutout Selection, Accessory Connections

HTS SERIES specifications

The Heat Controller HTS Series is a cutting-edge solution for climate control, designed to offer superior performance and unmatched comfort. This advanced heating and cooling system stands out in today's market due to its innovative technologies and user-friendly features.

One of the main features of the HTS Series is its energy efficiency. Equipped with the latest inverter technology, it adjusts the compressor speed to maintain the desired temperature while consuming less energy. This not only reduces operational costs but also minimizes the carbon footprint, making it an environmentally friendly choice.

Another standout characteristic of the HTS Series is its precise temperature control. The system utilizes advanced sensors to monitor indoor conditions in real-time, ensuring that you experience consistent comfort throughout your space. The ability to quickly react to changes in temperature helps maintain an optimal environment, regardless of external weather fluctuations.

The HTS Series also boasts a robust air filtration system. With multiple filter layers, including HEPA filters, it effectively captures dust, allergens, and other airborne pollutants. This feature makes the HTS Series an excellent choice for families with allergies or respiratory concerns, promoting a healthier indoor atmosphere.

Furthermore, the heat pump technology incorporated in the HTS Series allows for both heating and cooling capabilities. In cooler months, it efficiently extracts heat from the outside air to warm your living spaces, while during the summer, it reverses the process to provide refreshing cool air. This dual functionality enhances versatility, making it suitable for various climates.

User convenience is paramount in the HTS Series design. It comes with a smart thermostat that enables remote operation via a mobile app, providing users with flexible control over their environment. Additionally, the intuitive interface and programmable settings allow for seamless customization, adapting to your daily schedule and preferences.

Durability and quiet operation are also key attributes of the HTS Series. Built with high-quality materials and components, it ensures long-lasting performance, while its sound-dampening technologies provide whisper-quiet operation, enhancing the comfort of your home or office space.

In summary, the Heat Controller HTS Series represents the pinnacle of home heating and cooling technology. With its energy efficiency, precise temperature control, superior air filtration, dual functionality, and user-friendly features, it stands as a leading choice for those seeking reliable and effective climate solutions. This series not only enhances comfort but also supports a sustainable lifestyle for the future.