Description
cracked heat exchangers
reducing energy waste and preventing "smoke" calls from homeowners
extending the operational life of the primary control board
it has failed and must be replaced
providing essential high-side compressor protection
ZoneFirst 4PDR Relay cracked heat exchangersThe ZoneFirst 4PDR Relay is a specialized 24Vac 4PDT relay engineered for multi purpose HVACR control and complex zoning logic. This unit features a 4 Pole Double Throw configuration, allowing a single 24V signal to switch four independent sets of contacts. It is most commonly deployed as a slave damper control relay, enabling a technician to drive up to four separate dampers from one zone on a control panel or a single switch. The 4PDR utilizes a
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy