Easy Installation: Plumb Circulator On Furnace & Connect ThermoPEX │ Central Boiler

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Transcript: Easy Installation: Plumb Circulator On Furnace & Connect ThermoPEX │ Central Boiler

In this video we're going to show you how to plumb the circulator pump on your outdoor furnace and hook up your supply and return lines to the thermoPEX. Now there's many different ways of doing this and we're going to show you one very simple way that works great. Now here's a Classic Edge 750. We've removed the side panel and it's up on blocks for demonstration purposes. You'll see here here's the thermoPEX coming out of the ground. With the thermoPEX you'll want to cut away the outer layer and then peel off the insulation from the inner lines. Then you'll attach a termination cap and it'll look something like this. Notice how the thermoPEX has a black line on one of the air lines. That will allow you to follow that line to the building being heated. Now we're going to show you how to plumb your furnace we'll move this out of the way in real life you'll have to work around it not a big deal. This is your supply and return ports they're labeled. The hot water outlet or the supply is red and the cold water inlet or return is blue. We're going to mount the circulator pump on the outlet, the supply and we're going to mount it fairly low. Remove the inlet and outlet bungs of the ports you will be using. For all fittings with threaded connections, apply teflon thread tape and tighten with the appropriate tools. On the supply or outlet port, attach a nipple if needed. From there, attach the upper isolation flange. When mounting the circulator pump make sure you have the arrow pointing down. That's the direction of flow for the water. Place an o-ring in the groove on the circulator and mount the circulator. Insert the other o-ring between the circulator and bottom flange and connect the bottom flange. Connect the push-fit fitting to the bottom of the flange. On the cold water inlet, or return side, attach a street elbow and nipple if needed. Next attach a ball valve and short nipple. Attach the swing check valve making sure the arrow is pointing up. This is the direction of the water flow. Connect a push-fit pex fitting to the swing check valve. On the hot water outlet side line up the thermoPEX with a push-fit fitting and cut the ThermoPEX line to the appropriate length. Push the pex into the push-fit fitting. With push-fit fittings you can simply push the ThermoPEX into the fitting by hand. Do the same on the cold water inlet line. Well we're nearly done with the project one last thing insulate these lines to further reduce heat loss and of course every installation is different. If you're doing multiple buildings consult your owner's manual for a parts list And make sure you don't plug in the circulator until the furnace has been filled with water treatment and water and you've gone through the initial startup procedure. In this video we use push-fit fittings. There's a couple others available that Rob will cover. We have a standard pex fitting where you just put a crimp ring on. The fitting goes in and then you use a crimp tool to tighten it or if you don't have a crimp tool you can use a robust hose clamp. Not just any robust hose clamp but a Central Boiler clamp part # 5978. And then you just use a wrench. One last thing to keep in mind. If you're doing multiple buildings you could have up to 3 circulators and 3 returns. It could be a little bit of a jungle in here with the ThermoPEX coming up. Depending on the location the ThermoPEX, you can easily reach it with these flexible braided hoses which makes the install even easier.