Bradford-White Corp SDW2TW50T Manual De Usuario

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This section is intended to provide a better understanding of the solar thermal design

application and how it varies from the base model listed on page 3. 

The solar with gas backup water heater comes provided with two sets of twisted 

thermistor wiring.  They are color coded for ease of use.

The solar with gas backup models come with an internal double-wall heat exchanger.

Brown thermistor wiring is provided under an access panel between the solar heat 

exchanger connections.  A thermistor 

(not included) wired to this pair can be

connected to the solar control to determine the temperature differential between the 

tank and the solar collector.  The control can then activate a circulator to heat the tank. 

To assist in connecting the thermistor, the end has a supplied wire nut.  A bracket and 

plate is supplied to mechanically press the thermistor against the tank wall. 

A twisted orange wire set is provided under the upper access panel.  Some solar 

controllers have locations for a second tank temperature input.  This is not used for 

controlling the solar thermal system, but helps the end user understand what an 

anticipated delivered temperature may be. 

EcoStor2™ Solar  

Thermistor Wiring 

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