Immersion-type controllers that combine high limit protection with low limit and circulator control in forced hydronic heating systems, including domestic hot water service.

Features

• 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, IIApplicationHigh Limit Protection, Low Limit and Circulation ControlDimensions (in.)6 1/8 in. high x 4 3/8 in. wide x 3 1/16 in. deepDimensions (mm)156 mm high x 111 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)Maximum--150 F at switches; 265 F at sensing elementTemperature Range (C)Maximum--66 C at switches; 129 C at sensing elementMountingVertical MountApprovals, Underwriters Laboratories Inc.UL Listed (models with well): File No. MP466, Guide No. MBPR; UL Component Recognized (models without well): File No. MP466, Guide No. MBPR2Approvals, Canadian Standards AssociationCertified: File No. LR1620, Guide No. 400-E-OOperating Humidity Range (% RH)0 to 95% RH, non-condensingOperating Temperature Range (F)High Limit-- 130 F to 240 F adjustable; Low Limit-- 110 F to 220 F adjustableOperating Temperature Range (C)High Limit-- 54 C to 116 C adjustable; Low Limit-- 43 C to 104 C adjustableDifferential Temperature (F)High limit : 10 F fixed; low limit: 10-25 F adj.Electrical Ratings, BurnerAt Full Load-- 7.4 A @ 120 Vac: 3.7 A @ 240 Vac; At Locked Rotor-- 44.4 A @ 120 Vac: 22.2 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