Brochure

54
Custom Semi-Instantaneous
Water Heaters
HWI Models
Boiler Water or Steam
A. O. Smith’s HWI models are available for operation with
steam or boiler water as the energy source. They are factory
assembled with components sized, piped and checked at
the factory before shipment. HWI models are all space
saving vertical models.
Control Features
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Single Point Wiring–Single 120V connection, controls
including integral circulation
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On/Off Switch–Allows local on/off for service
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Temperature Readout–LED readout of water temperature
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PID Temperature Control–Modulates electrical control valve
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Closes main valve if “over” temperature conditions exist
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Remote Temperature Signal
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Two-Wire RS485 Communication (MODBUS or ASCII)
For additional information please call the factory with
the following:

Required gallons per hour recovery needed
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Temperature rise needed; for example—40° to 140°

Single or Double-Wall Coil
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If steam is the energy source, what is the steam pressure?
For example—15 psi, 30 psi, etc.

If boiler water is the energy source, what is the minimum
boiler water temperature? For example - 180°, 140°, etc.
Note: Orders cannot be processed until the above required
information has been provided.
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