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<p>Just use an equation and set the temperature setpoint to it's desired value when you want it on and to -999 when you want it off.</p>
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<p>Tset_Tankless = 55*Want_Tankless - 999*(1-Want_Tankless)</p>
<p> </p>
<p>Jeff</p>
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<pre>---<br />Jeff Thornton
President - TESS LLC
22 N. Carroll Street, Madison WI USA 53703
Office: (608) 274-2577 Fax: (608) 278-1475
www.tess-inc.com
E-Mail: thornton@tess-inc.com
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<p>On 05/30/2018 3:51 pm, Bishan Thapa via TRNSYS-users wrote:</p>
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<div dir="ltr">Hello everyone,
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<div>Can we set up a conditional turn on and off mechanism for the "Gas tankless water heater --Type 940". It is my back up heater for the solar combisytem. Unlike the differential controller type 165 , which senses out inputs and controls the pump in solar loop,I cannot see that it takes control signal to turn on and off. </div>
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<div>Sincerely,</div>
<div>Bishan Thapa</div>
<div> </div>
<div>University Of North Carolina Charlotte</div>
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