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U-Tube Double Wall

Модулирующий пароводонагреватель

ПОДОГРЕВАТЕЛЬ U-TUBE С ДВОЙНОЙ СТЕНКОЙ ТЕПЛООБМЕННИКА

The AERCO DW+ water heater is designed to satisfy potable water heating needs in commercial and institutional environments. The packaged system incorporates real-time, load tracking and responsive controls to maintain accurate hot water temperatures under persified loads and can be fueled using steam.

Packaged with electronic controls, the heater maintains outstanding temperature control when operated under constant load conditions with variances held to ±4°F under normal load changes of up to 25% of water heater capacity. An integrated load monitoring system and high turndown control valve deliver accurate temperature control without the need for storage tanks, blending valves or other temperature averaging components. When packaged with the electronic control system, the heater can be remotely monitored and/or fully integrated with BAS software.

The DW+ indirect fired water heater come in three models:

  • Model #SWDW24
  • Model #SWDW45
  • Model #SWDW68

FEATURES AND BENEFITS

Each compact steam-to-water heater utilizes a space-saving, vertical, double wall U-tube heater exchanger specifically designed to insure that no mixing of the steam and domestic water flows can occur without prior warning. Compliant with BOCA, IAPMO and NAPHCC code requirements, all wetted parts are 304 stainless steel, virgin Teflon, copper or copper alloy for longevity.

  • Accurate Temperature Control ±4°F
  • Compact Foot Print <4ft²
  • Fully Modulating Variable Primary Input
  • All Stainless, TFE, Copper or Copper Alloy Wetted Surfaces
  • UL-listed as Doublewall Heat Exchanger for Potable Hot Water Use
  • ASME- B&PV Code Sec. VIII, Div. 1 Stamped

OPTIONS AND ACCESSORIES

PRODUCT OPTIONS

Bare Heater
​Heat exchanger only; insulation optional.

Packaged Heater
Shipped completely assembled and ready for immediate hook-up; includes heat exchanger, patented AERCO steam control valve and electronic controls package.

ACCESSORIES

Air Compressor
Offered with pneumatic valve configurations if building air is unavailable.

Domestic Water Storage Tank
AERCO storage tanks are ASME certified glass-lined pressure vessels designed for use with instantaneous water heaters. When contending with challenging applications they assure consistent hot water service during peak demands. The AERCO storage tanks are available in stratified or accumulator storage configurations.

Steam Traps
Specifically selected for domestic water heating application, these steam traps are ideal for condensate drainage of SWDW installations. Settings for Pressure Relief Valve: Standard: 150 PSIG, 212°F P&T / Contact your local AERCO representative for higher settings

CONTROLS

Communications Gateway
Optional accessory supports integration with BACnet, LonWorks and N2 systems. Available only for heaters equipped with Modbus control board.

Dry Contacts
Optional for remote "High Limit Tripped Status" indication.

Electronic Controls
AERCO's exclusive electronic control system combines a control box assembly with all circuitry, a flow meter installed at the cold water inlet for feed-forward sensing, feedback sensors and voltage regulator. To maintain optimal temperature control, the system utilizes PID algorithms to monitor outlet temperature and change control valve position. Easy-to-use digital displays are protected by clear-cover enclosure which can be locked. The system also includes an overtemp limit switch and water solenoid valve to function as a secondary water relief valve in an over-temperature condition.

Modbus Communications
Optional control board supports remote control and integration via Modbus protocol to Building Automation or Energy Management Software via RS-232 or RS-485 port.

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