Product details:

Triple Aquastat Relay, SPST: High & Low Limit Immersion-type controllers that combine high limit protection with low limit and circulator control in forced hydronic heating systems. Provide multizone control by using a separate circulator and R845 Relay for each zone. Include diaphragm powerhead and Micro Switch assembly that respond to temperature changes in boiler water. Mount directly to boiler. Select models include large transformers and extra terminals for supplying power to low voltage zone valves. Require 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. - Operating Range, Low Limit (F)110 F to 220 FOverview - Immersion-type controllers that combine high limit protection with low limit and circulator control in forced hydronic heating systems, including domestic hot water service. - Minimum Ambient Temperature (F)-30 FOperating Range, Low Limit 43 C to 104 COperating Range, High Limit (F)130 F to 240 FMinimum Ambient Temperature -9 CMaximum Safe Operating Pressure (psi)200 psi on outside of immersion well, 100 psi on capsule if inserted directly. - Operating Range, High Limit 54 C to 116 CMaximum Safe Operating Pressure (k - Pa)1378 k - Pa on outside of immersion well, 690 k - Pa on capsule if inserted directly.ApplicationTriple Aquastat Relay with High limit - 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 ALR)22.2 A @ 240 Vac - Switching Action - Voltage120 Vac - Frequency60 Hz - Dimensions (in.)6 1/8 in. high x 4 3/8 in. wide x 3 1/16 in. deep - Dimensions (mm)156 mm high x 111 mm wide x 78 mm deep - Operating Humidity Range (% RH)0 to 95% RH, non-condensing - Electrical Connections - Quick-Connect / Screw - Differential Temperature (F)High limit : 10 F fixed; low limit: 10-25 F adj. - Maximum Ambient Temperature (F)150 F at switches; 265 F at sensing element - Maximum Ambient Temperature 66 C at switches, 129 C at sensing element.MountingVertical Mount459.45