The L8148 Aquastat® Relays are immersion type hydronic controllers that combine high limit protection with switching relay control of burner and circulator motors.

• High limit opens burner circuit only.
• Select models include transformer and accessory terminals for adding a remote low limit controller.
• Case available for horizontal or vertical mounting.
• Requires a 24 Vac thermostat with heat anticipator set at 0.2A.
• TRADELINE models include well adapter, tube of heat conductive compound and range stops..