slant fin boiler furnace (gas) how do they work? Is there anywhere on net that shows diagram and explains what is what ? bought house with one lol looks old and have no clue......
basically it works like this ...the boiler part heats the water and keeps it a certain temperature . this is controlled by thermosttats that connect to relays to turn the gas valve on or off when your water gets to cold or to hot ..when your house thermostat calls for heat this turns a pump on which circulates the hot water through the piping in your house to the various registers....until your house reaches a desired temperature then pump kicks off...the house thermostat also controls whether the boiler actually heats the water or not...if you dont need heat the water cools down and the cold water thermostat tells the boiler it is ready for the gas valve to heat water but it cannot do so until your house thermostat tells the boiler to start the pump and to start heating water..the hot water thermostat is independent and turns the gas off once the water has reached the desired temperature and the gas will stay off until the cold water thermostat tells the gas valve to come back on as long as your house thermostat is calling for heat....once your house gets warm everything shuts down and waits for next heating cycle when your house thermostat calls for heat again.. there is also a expansion tank that allows the hot water to expand without causing knocking noises...here is alink to a site that explains it in depth www.usace.army.mil/publications/armytm/t...
A boiler and a furnace are different. A boiler heats water - usually to boiling. The hot water/steam is then circulated to heat exchangers to pass the thermal energy to the point where it is required. Heating for hotel services, hot water, turbine drives, sterilization, and other mechanical requirements is accomplished. A furnace heats air directly without the use of water/steam. Hot air is then forced to the area requiring an increase in thermal energy. The item you have in your just-purchased home (congratulations) has a name-plate on it with the name of the company which manufactured the machine. Retrieve the model/serial number and call the manufacturer for a manual on the unit. Your fuel supplier will be able to give you some insight into the how and why of the operation of your unit. Call and have a service tech come to the house and have him show you how to work it.
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