How to Adjust your Honeywell Pressuretrol

If you have a Honeywell Pressuretrol installed on your boiler, you may need to adjust it from time to time to keep the boiler operating at peak efficiency. Here’s a quick guide on how to do that.

Checkout this video:

Why do you need to adjust your pressuretrol?

If your system is not maintaining the correct pressure, it could be due to a faulty pressuretrol. The function of the pressuretrol is to open and close the main burner in order to maintain a consistent boiler pressure. You may need to adjust your Honeywell pressuretrol if your boiler is not maintaining the correct pressure, the main burner is cycling on and off too frequently, or if the Pressuretrol is not opening or closing properly.

When do you need to adjust your pressuretrol?

You’ll need to adjust your pressuretrol when the pilot light is either on or off more than it should be. If the light is on too much, it means that the gas pressure is too high. If the light is off too much, it means that the gas pressure is too low.

How to adjust the spring range on your pressuretrol

If you have a boiler with a Honeywell pressuretrol on it, you may occasionally need to adjust the spring range. This is typically done when the boiler is maintaining too much or too little pressure.

First, you’ll need to identify which screw needs to be adjusted. The screw that controls the boiler’s upper limit is the one with a slot in it, while the one that controls the lower limit has a hole in it.

Turning the screw clockwise will increase the pressure, while turning it counterclockwise will lower the pressure. Adjust the screw until the boiler is maintaining the desired pressure.

How to adjust the differential range on your pressuretrol

Differential is the word used to describe the range of pressure between the cut in and cut out points on your Pressuretrol. This range is adjustable on many types of pressuretrols, which allows you to change the amount of pressure that is required to turn the device on or off. The procedure for adjusting the differential will vary depending on the model of pressuretrol that you have, so it is important to consult your user manual before attempting to make any changes. Generally speaking, you will need to adjust both the cut in and cut out screws in order to change the differential range.

If you find that your Pressuretrol is not responding properly to changes in pressure, it is likely that the differential needs to be adjusted. A too large differential range can cause the device to cycle on and off too frequently, while a too small differential range can prevent the device from turning on at all. By experimentally adjusting the cut in and cut out screws, you should be able to find a happy medium that keeps your Pressuretrol functioning properly.

How to check if your pressuretrol is adjusted correctly

If your boiler is all fired up but the system pressure is reading too low or too high, then it might be time to adjust your Honeywell pressuretrol. Improperly adjusted Pressuretrols are one of the most common causes for heating systems operating problems.

Here’s how to check if your pressuretrol is adjusted correctly:

-Start by checking the system pressure. It should be between 12 and 25 PSI (pounds per square inch).
-If the system pressure is outside of that range, then it’s time to adjust the Pressuretrol.
-To adjust the Pressuretrol, first locate the knob on the front of the device.
-Turn the knob clockwise to increase the system pressure, or counterclockwise to decrease the system pressure.
-Once you’ve achieved the desired system pressure, turn off the power to the boiler and allow the Pressuretrol to reset.

Tips for adjusting your pressuretrol

There are two main types of pressuretrols: those that adjust the heating output of the boiler (known as heating-side or main pressuretrols) and those that control the amount of steam coming out of the boiler (letting you know when to feed it more water, known as operating or secondary pressuretrols). In this guide, we’ll focus on adjusting your heating-side or main pressuretrol.

If you have a steam system, there will be a second device called a steam trap that controls the release of steam. Your owner’s manual will have information on adjusting this device.

1. Find your Honeywell pressuretrol. These are usually mounted on the side of the boiler near the water level gauge glass and have a small nut on top that is used to adjust the settings.

2.Loosen the locknut on the top of the pressuretrol with a wrench. This will allow you to turn the adjusting screw clockwise or counterclockwise to make your adjustments.

3.Turn the adjusting screw clockwise if you want to increase the pressure in your system. Conversely, turn it counterclockwise if you want to decrease pressure. Each complete turn will change the pressure by about 2 psi (pounds per square inch).

4.Tighten down the locknut once you’ve achieved your desired setting. Make sure not to over-tighten, as this could damage the threads and make it difficult to adjust in future.

Troubleshooting pressuretrol adjustment problems

You may need to adjust your Honeywell pressuretrol if you’re having troubles with your heating or cooling system. Follow these steps to properly adjust your pressuretrol.

FAQs about pressuretrols

Q. Why do I need a pressuretrol?

A. A pressuretrol is a key component in a boiler’s operating system. It helps to regulate the pressure of the boiler, ensuring that it doesn’t get too high or too low.

Q. How do I know if my pressuretrol needs adjusting?

A. If your boiler’s pressure is consistently too high or too low, it might be time to adjust your pressuretrol. You might also need to adjust it if the boiler is cycling on and off more frequently than usual.

Q. How do I adjust my pressuretrol?

A. To adjust your pressuretrol, first make sure that the power is turned off to the boiler. Then, remove the cover of the pressuretrol so that you can access the adjustment screw. Turn the screw clockwise to increase the boiler’s pressure, or counterclockwise to decrease it. Once you’ve made your adjustment, replace the cover and turn the power back on to the boiler.

How to contact Honeywell for pressuretrol support

If you have a problem with your pressuretrol or need support, the best way to get in touch with Honeywell is by email. You can find their customer support contact information on their website.

Additional resources for pressuretrol information

If you have any questions about your pressuretrol or need more information, please consult the following resources:
-Honeywell Customer Service: 1 (800) 628-5779
-Honeywell Website:
-Instruction Manual:Can be found here
-En Español: Siga este enlace

Scroll to Top