Immersion-type controllers that combine high limit protection with low limit and circulator control in forced hydronic heating systems, including domestic hot water service.
- 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.
Hazmat InformationUN 1294, TOLUENE, 3, IIApplicationTriple Aquastat Relay with High limitDimensions (in.)4 3/8 in. high x 6 1/8 in. wide x 3 1/16 in. deepDimensions (mm)111 mm high x 156 mm wide x 78 mm deepMaximum 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.Temperature Range (F)-30 F to 150 F at switches; 265 F at sensing elementTemperature Range (C)-34 C to 66 C at switches; 129 C at sensing elementMountingHorizontalFrequency60 HzElectrical ConnectionsQuick-Connect / ScrewOperating Humidity Range (% RH)0 to 95% RH, non-condensingVoltage120 VacOperating Temperature Range (F)High Limit-- 130 F to 240 F; Low Limit-- 110 F to 220 FOperating Temperature Range (C)High Limit-- 54 C to 116 C; Low Limit-- 43 C to 104 CDifferential Temperature (F)High limit : 10 F fixed; low limit: 10-25 F adj.Switching ActionSPST: High & Low LimitInsulation Depth (in.)1-1/2 inInsulation Depth (mm)38 mmElectrical Ratings, BurnerAt Full Load-- Line Voltage: 7.4 A @ 120 Vac: 3.7 A @ 240 Vac; At Locked Rotor-- Line Voltage: 44.4 A @ 120 Vac: 22.7 A @ 240 VacElectrical Ratings, CirculatorAt Full Load-- 7.4 A @ 120 Vac: 3.7 A @ 240 Vac; At Locked Rotor-- 44.4 A @ 120 Vac: 22.2 A @ 240 Vac