Pressurized Split Sub-Master Solar Controller | Kaichang

This sub‑master type intelligent control system is specifically designed for pressurized split solar water heating applications. As a dedicated solar controller, it offers precise management of thermal transfer and auxiliary heating. The unit features three scheduled heating times, allowing users to program auxiliary heating at three distinct daily periods to match household hot water demand patterns. The differential temperature circulation logic controls the heat exchange between the collector array and the storage tank based on the temperature difference. Additionally, the return water circulation function helps maintain hot water availability at the fixture points by circulating stored hot water through the distribution loop.

The system displays three critical temperature readings simultaneously: collector temperature, tank temperature, and pipeline temperature, providing comprehensive system status at a glance. Furthermore, this controller supports switching between two separate devices or heating sources, enabling flexible system configuration for dual‑energy or backup scenarios. This versatility makes it suitable for various residential solar thermal setups.

As a solar water heater controller, it focuses on core operational parameters without unnecessary complexity. It can be integrated with auxiliary components such as an anti‑freeze solar pipe valve to safeguard against freezing conditions in colder climates. For broader applications, it may be paired with a whole house hot water recirculation system to extend comfort throughout the home. The unit is built with reliable electronics for long‑term service. Installation and parameter setting should follow the provided manual. This product is manufactured by Kaichang, a company dedicated to energy‑saving electronics.