Description
Sunstar Thermostat Relay | 24V Relay Kit for SIS & SIU Tube Heaters | 43274030
The Sunstar 43274030 is a genuine Sunstar thermostat relay for SIS Vacuum Straight Tube Heaters (50,000-175,000 BTU), SIU Vacuum U-Tube Heaters (50,000-175,000 BTU). Relay kit that lets an SIS or SIU heater be controlled by the 24V thermostat 30562000. One relay kit is required per heater.
Relay kits let one low-voltage thermostat switch heaters it could not run directly, so a whole bay or zone of heaters comes on and off together.
Key Features
- Genuine Sunstar part number 43274030
- Fits SIS Vacuum Straight Tube Heaters, SIU Vacuum U-Tube Heaters
- Lets one thermostat run multiple heaters
- Factory-matched to Sunstar control wiring
Fits These Sunstar Heaters
- Sunstar SIS Vacuum Straight Tube Heaters (50,000-175,000 BTU)
- Sunstar SIU Vacuum U-Tube Heaters (50,000-175,000 BTU)
Before You Order
- Order one relay kit per heater where noted
- Confirm thermostat voltage and number of stages
- Confirm the part number against your heater model and rating plate, or the installation and operation manual.
Frequently Asked Questions
Do I need one relay per heater?
For the 24V and two-stage relay kits, yes. The fan center relay kit handles up to five heaters on one thermostat.
Does a relay kit replace the thermostat?
No. It sits between the thermostat and the heaters; you still need a thermostat.
