Tekmar Controls 302P Switching Relay
The Tekmar 302P Switching Relay is a professional-grade solution for managing 2-zone hydronic heating systems with integrated priority logic. Designed for heavy-duty commercial and residential applications, this unit allows a technician to connect up to two 24V (ac) thermostats to control two 115V (ac) circulator pumps. The microprocessor control provides a RoomResponse signal to optimize modulating-condensing boiler efficiency by communicating real-time load demand. Zone 1 features an optional priority setting, making it the ideal choice for indirect domestic hot water (DHW) applications, where the secondary zone is temporarily disabled to ensure maximum heat delivery to the tank. To prevent system stagnation during the off-season, the 302P includes an automated pump exercising function and utilizes a post purge sequence to clear residual heat from the boiler, improving overall energy performance. Encased in a NEMA 1 galvanized steel base with an ABS plastic cover, it includes four ground screws and multiple conduit knockouts for a clean, code-compliant installation.
Key Benefits- Zone 1 Priority: Selectable priority for indirect hot water tanks ensures consistent domestic hot water delivery.
- Advanced Boiler Integration: Features a RoomResponse signal (0-10V DC or 4-20mA) to maximize efficiency in modulating-condensing systems.
- System Protection: Integrated pump exercising prevents circulator seizure during long periods of inactivity, while post purge captures latent heat.
- Universal Compatibility: Works seamlessly with all 24V low-voltage thermostats and 115V circulators from major brands.
- Expandable Design: Supports unlimited zone expansion by daisy-chaining additional switching relays to accommodate larger hydronic layouts.
How does the RoomResponse signal benefit the installation?
The RoomResponse signal allows the Tekmar 302P to tell a compatible modulating boiler exactly when a zone is calling. This prevents the boiler from short-cycling and allows it to adjust its firing rate based on actual system demand rather than just a fixed temperature setpoint.
Can I use this relay with power-stealing thermostats?
Yes, the 302P is engineered with internal circuitry that supports power-stealing thermostats without the need for additional external resistors, simplifying the wiring process for modern smart controls.
What is the maximum amperage load for the circulator pumps?
The internal pump relays are rated for 5A (1/3 HP) each at 115V (ac), with a maximum combined amperage of 10A across all zones.
This item is not eligible for free shipping.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
Tekmar Controls 302P Switching Relay
The Tekmar 302P Switching Relay is a professional-grade solution for managing 2-zone hydronic heating systems with integrated priority logic. Designed for heavy-duty commercial and residential applications, this unit allows a technician to connect up to two 24V (ac) thermostats to control two 115V (ac) circulator pumps. The microprocessor control provides a RoomResponse signal to optimize modulating-condensing boiler efficiency by communicating real-time load demand. Zone 1 features an optional priority setting, making it the ideal choice for indirect domestic hot water (DHW) applications, where the secondary zone is temporarily disabled to ensure maximum heat delivery to the tank. To prevent system stagnation during the off-season, the 302P includes an automated pump exercising function and utilizes a post purge sequence to clear residual heat from the boiler, improving overall energy performance. Encased in a NEMA 1 galvanized steel base with an ABS plastic cover, it includes four ground screws and multiple conduit knockouts for a clean, code-compliant installation.
Key Benefits- Zone 1 Priority: Selectable priority for indirect hot water tanks ensures consistent domestic hot water delivery.
- Advanced Boiler Integration: Features a RoomResponse signal (0-10V DC or 4-20mA) to maximize efficiency in modulating-condensing systems.
- System Protection: Integrated pump exercising prevents circulator seizure during long periods of inactivity, while post purge captures latent heat.
- Universal Compatibility: Works seamlessly with all 24V low-voltage thermostats and 115V circulators from major brands.
- Expandable Design: Supports unlimited zone expansion by daisy-chaining additional switching relays to accommodate larger hydronic layouts.
How does the RoomResponse signal benefit the installation?
The RoomResponse signal allows the Tekmar 302P to tell a compatible modulating boiler exactly when a zone is calling. This prevents the boiler from short-cycling and allows it to adjust its firing rate based on actual system demand rather than just a fixed temperature setpoint.
Can I use this relay with power-stealing thermostats?
Yes, the 302P is engineered with internal circuitry that supports power-stealing thermostats without the need for additional external resistors, simplifying the wiring process for modern smart controls.
What is the maximum amperage load for the circulator pumps?
The internal pump relays are rated for 5A (1/3 HP) each at 115V (ac), with a maximum combined amperage of 10A across all zones.
This item is not eligible for free shipping.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
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Description
The Tekmar 302P Switching Relay is a professional-grade solution for managing 2-zone hydronic heating systems with integrated priority logic. Designed for heavy-duty commercial and residential applications, this unit allows a technician to connect up to two 24V (ac) thermostats to control two 115V (ac) circulator pumps. The microprocessor control provides a RoomResponse signal to optimize modulating-condensing boiler efficiency by communicating real-time load demand. Zone 1 features an optional priority setting, making it the ideal choice for indirect domestic hot water (DHW) applications, where the secondary zone is temporarily disabled to ensure maximum heat delivery to the tank. To prevent system stagnation during the off-season, the 302P includes an automated pump exercising function and utilizes a post purge sequence to clear residual heat from the boiler, improving overall energy performance. Encased in a NEMA 1 galvanized steel base with an ABS plastic cover, it includes four ground screws and multiple conduit knockouts for a clean, code-compliant installation.
Key Benefits- Zone 1 Priority: Selectable priority for indirect hot water tanks ensures consistent domestic hot water delivery.
- Advanced Boiler Integration: Features a RoomResponse signal (0-10V DC or 4-20mA) to maximize efficiency in modulating-condensing systems.
- System Protection: Integrated pump exercising prevents circulator seizure during long periods of inactivity, while post purge captures latent heat.
- Universal Compatibility: Works seamlessly with all 24V low-voltage thermostats and 115V circulators from major brands.
- Expandable Design: Supports unlimited zone expansion by daisy-chaining additional switching relays to accommodate larger hydronic layouts.
How does the RoomResponse signal benefit the installation?
The RoomResponse signal allows the Tekmar 302P to tell a compatible modulating boiler exactly when a zone is calling. This prevents the boiler from short-cycling and allows it to adjust its firing rate based on actual system demand rather than just a fixed temperature setpoint.
Can I use this relay with power-stealing thermostats?
Yes, the 302P is engineered with internal circuitry that supports power-stealing thermostats without the need for additional external resistors, simplifying the wiring process for modern smart controls.
What is the maximum amperage load for the circulator pumps?
The internal pump relays are rated for 5A (1/3 HP) each at 115V (ac), with a maximum combined amperage of 10A across all zones.
This item is not eligible for free shipping.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
