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Item 7 Of 12
Immersion type Aquastat, Unit Pack

L4080B1352/U

Immersion type Aquastat, Unit Pack

This product is available in the US only.

  • Product Info
  • Literature

Overview

Immersion type controllers for hydronic heating systems that turn off the burner whenever the boiler water temperature rises to the setpoint.Vertical mounting

Features

  • High Limit Aquastat Controller has adjustable set point.
  • Models available for use with immersion wells or for direct immersion if faster response is needed.
  • A factory-set stop is available on L4080 to prevent setting the control at too high a temperature.
  • Models available with second limit switch to shut off all gas to the burner.
  • Liquid fill in sensing element expands as the boiler temperature rises.
  • At the set point temperature, a diaphragm-actuated snap switch breaks the power supply to the burner primary control.

Product Specifications

Hazmat Information
UN 1294, TOLUENE, 3, II
Application
Immersion type controllers for hydronic heating systems that turn off the burner whenever the boiler water temperature rises to the set point.
Dimensions (in.)
Insertion depth: 3 in.
Dimensions (mm)
Insertion depth: 76.2 mm
Temperature Range (F)
Maximum--40 F above setpoint or 265 F, which ever is lower.
Temperature Range (C)
Maximum--22 C above setpoint or 129.4 C, which ever is lower.
Includes
Siphon Loop
Mounting
Mount using 1/4 in. NPT female threads or surface mount through base of case
Electrical Ratings
Millivolt--0.25 A @ 0.25 to 12 Vdc; At Full Load-- 8A @ 120 Vac: 4A @ 240 Vac; At Locked Rotor-- 48A @ 120 Vac: 24A @ 240 Vac
Approvals, Underwriters Laboratories Inc.
UL Listed: -models with well, File No. MP466, Guide No. MBPR, -models less well, File No. MP466, Guide No. MBPR2
Operating Temperature Range (F)
100 F to 200 F
Operating Temperature Range (C)
38 C to 93 C
Differential Temperature (F)
8 F
Differential Temperature (C)
4.4 C
Switching Action
Breaks contact on temperature rise to set point.
Approvals, American Gas Association
AGA Design Certified: Test Report 23-11B
Insulation Depth (in.)
1 1/2 in. to 3 in.
Insulation Depth (mm)
38 mm to 76 mm

Technical Documents

Product Data and Specifications-Product Data for L4080B, L4080D, L4080F, L4080G, L8080A Aquastat Controllers (English)

Installation Materials-Installation Instructions for L4080B,D and L8080A Aquastat Controllers (English)