If you program furnace thermostat to a certain degree, will it usually vary one or two deg up & down
It will vary a fair bit due to latent heat convection and not least of all where it is positioned
The thermostats are usually programmed to only cycle with a certain difference of where it is set. If it is for heat, the the optimal degree is what you set it at. As long as it is within 2 (i think is what mine is programmed for) or 3 degrees, the blower will stay off, but if it goes lower, then it kicks on. Conversly for cooling, it will range high 2 or 3 degrees before kicking on the air conditioner.
Yes it does this. The thermostat is part of a control-loop with feedback. The phenomenon you notice has a name. It's called 'hysteresis' and you can read all about it here-> http://en.wikipedia.org/wiki/Hysteresis.
For a thermostat, the hysteresis is designed-in -- to avoid uncontrolled rapid switching that could happen if the system switched on and off at exactly the same temperature.
(It's not due to latent heat convection stugod unless you mean something similar but I don't recognise the terms you used.)
by steven240sx 2 years ago
My gas furnace is blowing cold air some of the time. The burner kicks in for about 10 seconds...then kicks off, then the fan starts.(blowing cold air). Some times it works properly, heating longer and keeping the temperature up. Other times the temperature can drop down lower than the setting, then...
by Earl S. Wynn 2 years ago
Does having a college degree make you smarter or merely more skilled?
by tdbaca 7 years ago
My Heil furnace is running continously. We replaced the thermostat and it still continues to...run. We placed the thermostate on Auto.
Copyright © 2018 HubPages Inc. and respective owners. Other product and company names shown may be trademarks of their respective owners. HubPages® is a registered Service Mark of HubPages, Inc. HubPages and Hubbers (authors) may earn revenue on this page based on affiliate relationships and advertisements with partners including Amazon, Google, and others.
|HubPages Device ID||This is used to identify particular browsers or devices when the access the service, and is used for security reasons.|
|Login||This is necessary to sign in to the HubPages Service.|
|HubPages Traffic Pixel||This is used to collect data on traffic to articles and other pages on our site. Unless you are signed in to a HubPages account, all personally identifiable information is anonymized.|
|Remarketing Pixels||We may use remarketing pixels from advertising networks such as Google AdWords, Bing Ads, and Facebook in order to advertise the HubPages Service to people that have visited our sites.|
|Conversion Tracking Pixels||We may use conversion tracking pixels from advertising networks such as Google AdWords, Bing Ads, and Facebook in order to identify when an advertisement has successfully resulted in the desired action, such as signing up for the HubPages Service or publishing an article on the HubPages Service.|