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Reverse acting (DA) works by supplying current when the temperature rises, using power to shut the system down. Direct acting (DA) supplies current as the temperature falls, turning the system on when heat is needed, by supplying power when it is off.
As an example, a zone valve in an apartment can be normally open or normally closed. One type needs power to open, the other uses power to close.
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What contains a small piece of metal that bends when it gets hot?
Thermostats.
How do thermostats work?
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What is the name of the two metals that are plated together and heated for thermostats?
murhy and eleticity
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Thermal Massogy
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Its 'toms diner' by suzzane vega. I think
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When was Mi Da Ra Matenrō created?
Mi Da Ra Matenrō was created on 2003-09-10.
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Ra...Da...Man...This. Rhadamanthys.
Sheni azrit ra minda am cxovrebashi?
neta mec vicode ra minda koveli dge vxvdebi rom ragaca maklia da ragacis ukmarisobas ganvicdi shinagan samkaroshi neta ra unda ikos neta mivxvde da dasruldes es ucnauroba ra unda ikos?
How many people from haiti came to America since the earthquake?
ra da
What is the word 27body27 when translated from English to Japanese?
体 /ka ra da/.
What does da ku ra mean?
i think you mean dakara? it means, 'that's why'
What is difference between Ra and Rz values?
Ra is Indian standard whereas Rz is DIN standard
What is Miranda in Japanese?
It can be written as such: ミランダ　The characters that comprise this are, in order, 'mi' 'ra' 'n' 'da.'
