The Honeywell L8124C1003 Triple Aquastat Relay with High limit : 10 F fixed; low limit: 10-25 F adj. Differential Hazmat# UN1294 Toluene. Immersion-type controller that combines high limit protection with low limit and circulator control in forced hydronic heating systems, including domestic hot water service.

Features
 

The Honeywell L8124C1003 Immersion-type controllers that combine high limit protection with low limit and circulator control in forced hydronic heating systems. Provides multizone control by using a separate circulator and R845 Relay for each zone. Includes diaphragm powerhead and Micro Switch assembly that respond to temperature changes in boiler water. Mount the The Honeywell L8124C1003 directly to boiler. Select models include large transformers and extra terminals for supplying power to low voltage zone valves. Requires 24 Vac thermostat with heat anticipator set at 0.2 A (plus current draw of gas valve on L8124E). TRADELINE models include tube of heat conductive compound and range stops. 

Product Specifications
Application Triple Aquastat Relay with High limit Operating Range, Low Limit (F) 110 F to 220 F Operating Range, Low Limit (C) 43 C to 104 C Operating Range, High Limit (F) 130 F to 240 F Operating Range, High Limit (C) 54 C to 116 C Differential Temperature (F) High limit : 10 F fixed; low limit: 10-25 F adj. Switching Action SPST: High & Low Limit Maximum Safe Operating Pressure (psi) 200 psi on outside of immersion well, 100 psi on capsule if inserted directly. Maximum Safe Operating Pressure (kPa) 1378 kPa on outside of immersion well, 690 kPa on capsule if inserted directly. Electrical Ratings (burner AFL) Line Voltage: 7.4 A @ 120 Vac; 3.7 A @ 240 Vac Electrical Ratings (burner ALR) Line Voltage: 44.4 A @ 120 Vac; 22.7 A @ 240 Vac Electrical Ratings (circulator AFL) 3.7 A @ 240 Vac Electrical Ratings (circulator AFL) 7.4 A @ 120 Vac Electrical Ratings (circulator ALR) 22.7 A @ 240 Vac Electrical Ratings (circulator ALR) 44.4 A @ 120 Vac Voltage 120 Vac Frequency 60 Hz Dimensions (in.) 4 3/8 in. high x 6 1/8 in. wide x 3 1/16 in. deep Dimensions (mm) 111 mm high x 156 mm wide x 78 mm deep Mounting Horizontal Operating Humidity Range (% RH) 0 to 95% RH, non-condensing Maximum Ambient Temperature (F) 150 F at switches, 265 F at sensing element. Maximum Ambient Temperature (C) 66 C at switches, 129 C at sensing element. Minimum Ambient Temperature (F) -30 F Minimum Ambient Temperature (C) -9 C Electrical Connections Quick-Connect / Screw