Right so charging a heat pump is one of those things that you would rather do in cooling mode. A lot of manufacturers tell you to do it by weight and, of course, that makes a lot of sense, but we're still required to check a system and make sure that it's working properly, if you're there for basic repair motor capacitor or whatever you've got to know That the system is working properly, and so we go over a little bit about how to do that on a carrier system. If you have manufacturer specific information, that's what you want to go off of. You want to go off what the manufacturer shows, but in some cases there's some rules of thumb you can.

You can follow. I'm gon na do a different video on that. If you absolutely have no information, but in this video Jesse's gon na review with you how to use the carrier manufacturer information in order to check the charge on a heat pump, so we're gon na run the system in heat boat get the pressures currently outside. It's right around 57 degrees, indoor temperatures right around 70 degrees, so we're gon na look at the chart for this particular carrier unit and check it out this one here.

The middle portion, like we discussed, is our common suction line, so you're gon na hook up your suction line to that one, because the metering devices right here on the carrier systems, your piston - is located right here. This is not a valid test for your liquid line. That being the case on a carrier system, you're going to hook up to your suction port, which, in heat mode, is actually your discharge port, all right, we're going to fire it up. So here is our charging chart for heat mode, our indoor temperature.

Here you select the unit. This particular one is a 2-ton system. Our indoor temperature is 70 degrees. Our outdoor temperature is right about here about 57 between 60 and 57.

So if you scroll down based on our tonnage and indoor temperature, our suction should be approximately 130 degrees, and our discharge pressure should be right. Around 374, we'll give this about five ten minutes of runtime all right. So it's been running for about ten minutes. Our outdoor temperatures out fifty-five drive all about 50 wet-bulb a little bit lower than that, so our outside temperatures are really closer to this one here which, on our indoor temperature, that would put our suction at 115 in our discharge right around heating up inside a bit To about 70 degrees, but you know right around that 350 mark right now.

Our pressures are 112 over 373 everything's working pretty good. The last thing we want to do is force it into a defrost cycle. So that way we can see that operation.