Description
The Tekmar 423 Universal Reset Module is engineered to manage all mechanical equipment within a hydronic heating system, excluding zones, by coordinating operations through network communication. Suitable for a range of applications—from a single zone with baseboard heating and an on/off boiler to complex systems with multiple fan coils, mixed radiant floor zones, and two modulating/condensing boilers—this module efficiently regulates up to four space heating water temperatures via Outdoor Temperature Reset and Indoor Temperature Feedback. It controls two on/off or modulating boilers, manages Domestic Hot Water, setpoint loads, and can expand to support up to 24 zones for each temperature (96 in total).
Key Features:
- Outdoor temperature reset and indoor temperature feedback for optimized performance.
- Warm weather shutdown and zone synchronization to enhance efficiency.
- Domestic Hot Water (DHW) control, post-purge functionality, and optional DHW priority.
- Expandable control for up to 96 zones and support for two on/off or two modulating boiler configurations.
- Regulation of up to four water temperatures (with additional mix expansion modules) and automatic boiler differential.
- Built-in exercising and boiler protection features to ensure longevity.
- Powered pump outputs and system setback options (with an optional timer).
- One-touch overrides available with an optional User Switch for added convenience.
