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- Unit 1 Brooks Lane, Middlewich, Cheshire
- 020 8075 5838
Tankless Series
Tankless Electric Water Heater
The Tankless water heater is built to provide continuous hot water whenever you need it. When a hot water tap is turned on, water from the cold water pipe enters the water heater and passes through the heat exchanger. With an electric tankless product, the water passes over the heating elements quickly, heating the water to your desired temperature. A tankless electric water heater will provide many years of reliable service in your home and business. The cold water enters the unit and passes through a flow meter and an inlet thermistor, which measure the precise flow rate and temperature of the incoming water. The control system uses advanced logic with solid-state switching devices to fully modulate the power to the heating elements from 0-100% to provide the most accurate and consistent hot water temperatures in the industry. As the water flows out of the unit, a second thermistor makes any necessary adjustments to ensure the TWS Tankless delivers accurate and consistent hot water. With numerous control features, including the ability to track kW hours consumed, operating cost, and hot water usage, the TWS Tankless allows the operator to maximize their savings and gain the most benefit from their investment.
NEMA 4 CONSTRUCTION STANDARD
ANSI/ISEA Z358.1-2014 STANDARD
98%+ HIGH EFFICIENCY DESIGN
AVAILABLE IN 2, 3, and 6 ELEMENTS
HIGH GRADE MATERIALS FOR LONGEVITY
DIGITAL TEMPERATURE CONTROLS
HX/TX Overview
TEMPERATURE CONTROLLER
A sophisticated electronic temperature controller with LED digital display provides the user interface. The temperature controller processes all flow and temperature data and calculates power input to meet demand.
FULL HEATER MODULATION
Each heating element is switched on/off using a fast-acting solid-state TRIAC with zero-crossing over-firing control. This switching action provides full modulation of each heating element, regulating heat input to meet demand. To improve operating efficiency and component longevity, each triac is mounted to a heat sink located on the incoming supply piping so that heat generated by the triac during the switching process is dissipated into the water.
PROPER POWER INTEGRITY
All TWS Tankless water heaters, including all 3 phase models, are engineered to operate as a balanced load and operate at 0.999 Power Factor. All TWS 3 phase models are designed for 3 wire (3 live, 1 ground) and 4 wire power systems and draw equal current across all conductors to maintain the power integrity of the users electrical system. TWS does not recommend the use of heaters that operate as an unbalanced load. All load switching in TWS tankless models is performed as zero cross over, eliminating phase angle firing interference and associated EMI issues.
FULL RESOURCE STAGING
The TWS Tankless control system ensures that usage is equalized across all heating circuits. To achieve this, once the controller has calculated kW required, all circuits are energized proportionally, independently, and then time staggered between circuits. This full resource staging reduces EMI output, increases component longevity, and provides highly accurate and consistent hot water temperatures. For three phase models, all circuits are fully modulated and synchronized to operate as a balanced load.
BACnet MODULE
The TWS BACnet interface unit implements the BACnet MS/TP protocol. The device comes from the factory ready to be operated. The unit can be reconfigured easily with a USB cable and the BACnet Network Utility program located on the TWS web page. The BACnet includes features such as set temperature, power limiting, power setting, temperature in and out, flow rate, flowmeter error, and leak detections. Note that internet protocol is not supported.
BUILDING MANAGEMENT INTEGRATION
Remote Control: Ability to remotely enable or inhibit the heating operation of the unit using one of the following two methods:
- The supplied 24VDC signal is user-configured for either Inhibit Mode or Normal Operation Mode.
- The supplied volt-free contact is user-configured for either Inhibit Mode or Normal Operation Mode.
Priority Control: An integrated SPDT potential free dry contact (NO/NC 10A @ 240VAC) energizes when the unit is heating and de-energizes when not heating. This feature is useful when it is desirable to give the water heater priority over another electrical load to ensure that both are not operational at the same time.
