
The Universal Control Hub for Multi-Zone Heating
Optimize your HVAC infrastructure with our robust Waterline Controllers. Engineered for precision and reliability, our controllers serve as the central command for pumps, boilers, and heat pumps. From 5-zone compact units to 8-zone professional centers, we provide the intelligent energy-efficient zone management needed for modern residential and commercial climate control.




Application
As a strategic HVAC manufacturer, we empower our partners with more than just hardware; we provide a complete ecosystem of technical excellence and global market readiness.
A multi-zone wiring centre (like our 5 or 8-zone models) acts as the "brain" of your hydronic heating system. It simplifies wiring by centralising connections from thermostats to actuators. More importantly, it provides intelligent interlock logic—ensuring that the boiler and pump only run when there is an active heat demand, significantly reducing energy bills and mechanical wear.
Yes. Our controllers are designed with high versatility to fit standard hydraulic configurations. The 8-zone professional model specifically supports 5-wire valve connections common in UK S-Plan systems, allowing for seamless integrated control of both space heating and Domestic Hot Water (DHW).
This is a critical protection feature. Thermal actuators take 2–3 minutes to fully open. Without a delay function, the boiler and pump might start against a closed valve, causing hydraulic shock or pump burnout. Our controllers include a built-in delay to ensure the water path is open before the heat source ignites, extending the lifespan of your equipment.
No, to ensure safety and system stability, you should choose the specific voltage model that matches your thermostats and actuators. We offer both 230V AC (standard for EU/UK) and 24V AC (standard for North America and specialized projects) versions to meet your specific project requirements.
Each channel on our 5-zone and 8-zone controllers is designed to drive 2–3 thermal actuators (depending on the total current draw). This allows you to manage multiple heating loops within a single large room or open-plan area using one thermostat.
Yes. We provide both hardwired reliability and RF wireless flexibility. Our RF models are the ideal retrofit heating solution, allowing you to upgrade an existing system to multi-zone control without the need for destructive wall chasing or rewiring.
Our controllers feature Visual Diagnostics. Each zone has a dedicated LED that lights up when that zone is calling for heat. There are also master LEDs for Power, Pump, and Boiler status. This makes commissioning and troubleshooting incredibly fast—you can see at a glance exactly which part of the system is active.
Absolutely. Our logic is Heat Pump Ready. Whether you are using a traditional gas boiler or a modern air-to-water heat pump, the dry contact or powered output can trigger the heat source efficiently based on demand.
Contact our friendly Customer Service team for any Question,Concern, or Suggestion. We'd love to hear from you!
Headquater hotline: +86 755 61218391
Headquater email: info@saswell.com
MENA tech support hotline: +97155 6743682
MENA tech support email: support@saswell.com
