Making sure that your Smart Oil Gauge installation is correct is crucial for its functionality. Depending on your tank, the installation process is different and can sometimes be confusing with all the different adapters! The Duo and Standard models also have slightly different installations. Granby tank installations will end up being different than Roth installations. But before you install the Smart Oil Gauge, you must set it up and connect it to the app first! This will make the install process much easier!
What’s Required for Installation?
When it comes to installing a Smart Oil Gauge on a standard steel Granby tank, there are a couple of things that you need! Firstly, you will obviously need the gauge! Then, you’ll need a pipe wrench and pipe dope. Those can be purchased at Lowe’s, Home Depot, or on Amazon. DO NOT USE TEFLON TAPE! Finally, if you need an adapter, you’ll need that too! Don’t worry, I’ll touch more on that later in this blog.
However, for Granby double-wall tanks and Roth double-wall tanks, you will simply need the Smart Oil Gauge and the Roth adapter! I’ll touch more on those Roth adapters later, but the installation on these is a little bit simpler!
Steel Tank Installations
These types of tanks are the most common. Most homes in the United States that have heating oil will use a standard Granby tank, regardless of if its 275 or 330 gallons. If you don’t have an adapter for the standard Smart Oil Gauge installation, then all you need to use is the pipe wrench and pipe dope. Simply apply a thin layer of pipe dope onto the bottom threads and then hand-thread it into the tank as far as you can. Then, you’ll want to use your pipe wrench and thread it down all the way until you cannot thread it anymore. You can watch our video instructions here.

However, if you’re using an adapter, then you’ll want to thread the gauge into the adapter WITHOUT pipe dope. Then, put a thin layer of pipe dope on the bottom threads of the adapter. Once you’ve done that, use the pipe wrench to tighten the gauge and adapter onto the tank.
Granby and Roth Double Wall Tanks Installations
I mentioned this briefly, but when installing the Smart Oil Gauge onto a tank that’s either a Roth or Granby double-wall, you will just need the adapter and the device. You CANNOT install the Smart Oil Gauge onto the tank’s fitting that comes with the tank. The reason for this is that the gauge sends its signal in a cone shape, not straight down. The tank’s fitting doesn’t accommodate the gauge’s signal. Without the adapter, the Smart Oil Gauge will only read full.
For this installation, you DO NOT need to use Teflon tape or pipe dope. You can simply hand-thread the gauge into the tank and then remove the existing tank fitting from the tank. Then, put the Smart Oil Gauge and the adapter onto the white fitting in its place. You can watch an installation of this process here.
Smart Oil Gauge Adapter Compatibility
There are a couple of adapters for the Smart Oil Gauges, so it can be a little confusing which one you need for your setup. The standard Smart Oil Gauge has three adapters, while the Duo only has two.
The three adapters for the Standard Smart Oil Gauge are the 1.25″, 1.5″, and Roth adapters. The 1.25″ NPT adapter is used on tanks that have a 1.25″ fitting. This adapter is only usable with the standard Smart Oil Gauge. The Duo is not compatible with a 1.25″ fitting. Each of the adapters have their own SKU. CCF-905 is for the 1.5″ NPT, CCF-906 is for the Roth, and CCF-908 is for the 1.25″ NPT adapter. You can use the graph below to get a better idea of which one you need.

Now, Smart Oil Gauge Duos only have two adapters. These are the CCF-905DUO and the CCF-906DUO. These are the 1.5″ and the Roth adapters, respectively. The Duo cannot be used on tanks with 1.25″ NPT fittings. This is because these fittings are too small for the sensors of the Duo to fit through the hole. But one thing you need to know about the Roth adapters is that you have to slide the guide cone into the body of the gauge first. Without doing that, the Smart Oil Gauge won’t be able to be read properly.

Non-Traditional Tank Installations
While Roth tanks are easy and Granby tanks are straightforward, non-traditional tanks will tend to be a little tricky. While most standard tanks are oval-shaped, these tanks tend to be more rectangular, cylindrical, and cube-shaped. However, as long as the tank has a fitting that’s 2″ NPT, you shouldn’t have any trouble installing the gauge onto the tank! These tanks will often have a 2″ NPT fitting, but in rare cases, they don’t. So make sure that your tank has one of these fittings!
However, if your tank fitting is larger than 2″ NPT, then the gauge won’t be able to be installed on this tank size. We don’t sell adapters that are larger than 1.5″ NPT. The Smart Oil Gauge cannot work with any of the off-the-shelf adapters. Standard off-the-shelf adapters don’t accommodate the Smart Oil Gauge’s ultrasonic signal, so the readings might not be accurate. The adapters we provide are specifically made for the gauge and to accommodate its signal. Adapters that are off the shelf do not.
What Can’t the Gauge be Installed onto?
While the Smart Oil Gauge can be installed on most tanks, there are a couple of tanks for which the gauge cannot be installed. The major tanks that the gauge cannot be installed on are Roth 1500L, Underground tanks, and fiberglass tanks. I go a bit more in-depth as to why that is in this article.
The Smart Oil Gauge can’t be installed on fittings that are raised, T-pipes, or extension pipes. Raised fittings will make it harder for the gauge to get the signal beyond the fitting, which will ultimately make the gauge read “Full” all the time. The same can be said for T-pipes and extension pipes. While the extension pipe raises the gauge higher than it should, on T-pipes, the gauge won’t even be able to see the oil!
Conclusion
Depending on your tank size and style, your Smart Oil Gauge installation will be different! Which is perfectly fine! As long as you are following the steps in the gauge’s instructions as well as the tips and tricks in this blog post, you’ll be able to install the gauge without any issues!
Just make sure that when you’re installing the gauge, you have all the necessary tools and equipment! Don’t forget to get the gauge set up in the app first before you go ahead and install it! That’ll make the process so much easier to get it set up and installed!
Happy Heating!
Hunter

































