Plus the circulator pump for a backyard wood furnace.

Over the past few years, outdoor wood furnaces have become one of the extremely popular heating solutions in rural areas. The statement is especially true for consumers, who used to create oil-fired boilers and were greatly impacted by the recent spike in oil selling price ranges.

The advantages of developing a wood furnace a clear: instead of having to repay thousands in heating bills annually and polluting the environment, it is easier burn the wood that grows in your backyard and get all the heat you need for free or almost free.

The matter of purchasing and setting up this form of equipment has been individual for discussion for a while, and now, it is time to talk about the various components that go along with it.

A circulator pump is really a device that will constantly recirculate the hot water between the boiler and also the house, thus assuring overview of and constant delivery of warmth.

It is crucial to size the circulator pump properly, as it will directly impact the performance of the heating console.

First, the circulator pump's flow rate in Gallons per Minute (GPM) is required to be determined, based on needed BTU load.

A typical wood boiler operates at a 20F temperature differential (difference between supply and return temperatures) and the house it heats would normally require 1 GPM per every 10,000 BTU's.

At 180,000 BTU load, the flow rate is the 180,000 / 10,000 = 18 GPM.

Next step is to calculate the pressure drop in head of ft, which is associated with PEX tubing runs out of your boiler to the house and back.

In this example, assist assume that the wood stove is installed 50ft away from the property.

By using a pressure drop table, supplied with PEX tubing manufacturer, we can locate the pressure drop in PSI or ft of head for a particular PEX tubing size with only a given flow rate.

For 1' PEX tubing, pressure drop for 100ft of tubing at 18 GPM would be 36 ft of head.

All that's left to do, it to match the data we have (18 GPM, 36 ft head) with the pump curve chart, supplied coming from the manufacturer.

If using a Taco circulator pump, the correct model would be a 0011 or a 0013 model.