Overview
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 Switchâ„¢ 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.
Product Specifications
- Hazmat Information
- UN 1294, TOLUENE, 3, II
- Application
- High Limit Protection, Low Limit and Circulation Control
- 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
- 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.
- Temperature Range (F)
- Maximum--150 F at switches; 265 F at sensing element
- Temperature Range (C)
- Maximum--66 C at switches; 129 C at sensing element
- Includes
- No Well
- Mounting
- Vertical Mount
- Approvals, 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. MBPR2
- Approvals, Canadian Standards Association
- Certified: File No. LR1620, Guide No. 400-E-O
- Operating Humidity Range (% RH)
- 0 to 95% RH, non-condensing
- Voltage
- 120 Vac
- Operating Temperature Range (F)
- High Limit-- 130 F to 240 F adjustable; Low Limit-- 110 F to 220 F adjustable
- Operating Temperature Range (C)
- High Limit-- 54 C to 116 C adjustable; Low Limit-- 43 C to 104 C adjustable
- Differential Temperature (F)
- High limit : 10 F fixed; low limit: 10-25 F adj.
- Insulation Depth (in.)
- 1 1/2 in.
- Insulation Depth (mm)
- 38 mm
- Electrical Ratings, Burner
- At 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
- Electrical Ratings, Circulator
- At 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
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