DIY Circulator Pump Installation DIY Circulator Pump Installation

What You'll Need
Wrench set
Electrical Crimpers or Pliers
Pump, w/all the attachment supplies that were included
Bucket large enough to catch drainage
Electrical caps

A circulator pump is the pump that keeps liquid contained in a closed-circuit piping system flowing. They are usually used in heating or cooling systems. It is an especially economical system when used for heating, since hot water is only minimally added, and none escapes, and the majority of the heat energy goes towards heating the intended space, rather than as thrown off excess. Changing the circulator pump can seem like a challenging task, but with the right tools and some know-how, it shouldn't be too difficult.

Step 1 - Preparing 

The first thing you want to do is arrange all your tools and the parts for the pump so they're optimally located when you actually begin work. Unwrap all the bolts, flanges, gaskets, washers, and the rest of the parts that came with the pump. The last thing you want to do when in the middle of a job is look for the right tool or part, so it's best to make everything as accessible as you can before you start. 

Step 2 - Unhooking the Old Pump

Before you can unhook the old pump, you need to shut off the water supply and cut the power to the area you'll be working with. If you're replacing a pump, there should be isolation valves you can turn to turn the water off locally, or you may have to shut off the main water supply. In either case, make sure it's secure, and that water won't come flowing out of the pipe as you're working on it. Once the water's shut off, locate the fuse or breaker that controls the pump area and disconnect it. If you're not sure which fuse or breaker to use, it may be safer to simply shut down the main one. You want the power completely cut off, so either choice will work.

Once the power's off, you can disconnect the wiring from the old pump. Use the electrical crimpers to fasten the caps to the wires as you pull them out, and make sure to keep track of which wires came from which area in the old pump. Color-coded caps can come in handy for this. 

When the old pump is completely disconnected, place the bucket underneath the pump and use the wrenches to remove the flange bolts holding it in place. Be careful, since a rush of water may come out when you break the seal. It shouldn't be too much, however. 

Step 3 - Hooking Up the New Pump

Hooking up the new pump is the easiest step in the entire process. Simple attach the pump and install it just like the old one was. Make sure the gaskets are lined up to avoid leaking in the future, and tighten the bolts on the flanges securely. You marked the wiring, so it should be a simple step installing them into the new pump. Once you have everything connected and secure, turn the water and electricity back on and inspect the pump to make sure there are no leaks. 



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