Honeywell Aquastat Relay L8148e Wiring Diagram

By | May 26, 2023



When it comes to home heating systems, the Honeywell Aquastat Relay L8148e is a trusted and reliable choice for many homeowners. This essential device helps regulate the temperature of your boiler, ensuring that your home stays warm and comfortable all year round. But how does it work? In this article, we'll take a closer look at the Honeywell Aquastat Relay L8148e wiring diagram to help you better understand this crucial component of your heating system.

First, let's start with the basics. The Honeywell Aquastat Relay L8148e is a control device that uses a temperature-sensing probe to monitor the temperature of the water in your boiler. It then sends a signal to the burner control module, which adjusts the burner's operation to maintain a consistent water temperature. This ensures that your home is always heated to your desired level, while also helping to reduce energy consumption.

Now, let's dive into the wiring diagram. The L8148e model features four terminals: TT, ZR, ZC, and DH. The TT terminal is used for the thermostat, while the ZR and ZC terminals are used for the circulator pump. The DH terminal is for the domestic hot water aquastat, which is used to control the hot water temperature in your home.

To properly wire the Honeywell Aquastat Relay L8148e, you will need to refer to the manufacturer's instructions or consult a professional electrician. However, here are some general guidelines to keep in mind. The TT terminal should be connected to the thermostat's R terminal, while the ZR and ZC terminals should be connected to the circulator pump's power supply. The DH terminal should be connected to the domestic hot water aquastat.

In conclusion, the Honeywell Aquastat Relay L8148e is a vital component of your home heating system, ensuring that your home stays warm and comfortable. Its wiring diagram may seem complex at first, but with the right instructions, it can be easily understood and properly installed. So next time you turn up the heat on a chilly day, remember to thank your trusty Honeywell Aquastat Relay L8148e for keeping you cozy.


L8148a1017 U

L8148a1017 U


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