Tekmar 422 Universal Reset Module, Two tN4, Mixing, Boiler, DHW and Setpoint
Specs not yet added for this product. See the Description tab for full details.
Please refer to the product description or manufacturer documentation for included items.
The Universal Reset Module 422 is designed to operate all of the mechanical equipment in a hydronic heating system, except for zones, coordinating their operation through network communication. It can be used in applications ranging from a single zone of baseboard with an on/off boiler to multiple fan coils, mixed radiant floor zones, and a modulating/condensing boiler. This control regulates up to two heating water temperatures through Outdoor Temperature Reset and Indoor Temperature Feedback. It is capable of controlling a single on/off, two stage, or modulating boiler, a mixing device, Domestic Hot Water, setpoint loads, and can expand up to 24 zones in total for each heating water temperature.
Features:
Outdoor temperature reset, indoor temperature feedback
Warm weather shut down, zone synchronization
DHW post purge, DHW control
DHW priority (optional), expandable up to 48 zones
Single on/off or modulating boiler control, variable speed, or floating action mixing control
Automatic boiler differential, Exercising
Boiler protection, powered pump outputs
System setback (with optional Timer)
One touch overrides (with optional User Switch)