Description
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).

Product Specifications

  • Description : Triple Aquastat Relay with High limit : 10 F fixed; low limit: 10-25 F adj. Differential
  • 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: 24 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
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    Specs
    Application:
    High Limit
    Triple Aquastat Relay
    Switch Action:
    SPST
    Temperature Range (F):
    130°F to 240°F
    110°F to 220°F
    Electrical Rating:
    Circulator: 7.4 A @ 120 Vac
    Burner: 7.4 A @ 120 Vac
    Burner: 3.7 A @ 240 Vac
    Electrical Ratings (ALR):
    Circulator: 44.4 A @ 120 Vac
    Differential:
    10° to 25°F (Low Limit)
    Min Temp Differential:
    10°F
    Max Temp Differential:
    10°F
    Differential:
    Adjustable
    Fixed
    Max Temp Differential:
    25°F
    Width:
    6-1/8"
    Height (Inches):
    4.375
    Depth (Inches):
    3-1/16"
    Operating Humidity:
    0% to 95% (non-condensing)
    Max Ambient Temp (°F):
    265 F at Sensing Element
    150 F at Switches
    Mount:
    Horizontal
    Voltage:
    120v
    24v
    Frequency:
    60 Hz
    Max Pressure (PSI):
    100 psi Direct Immersion
    200 psi on Immersion Well
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