L8148E1216 | Honeywell Aquastat Relay Boiler Control
L8148E1216 | Honeywell Aquastat Relay Boiler Control
L8148E1216 | Honeywell Aquastat Relay Boiler Control
    L8148E1216 | Honeywell Aquastat Relay Boiler Control
L8148E1216 | Honeywell Aquastat Relay Boiler Control

L8148E1216 | Honeywell Aquastat Relay Boiler Control

Part #: L8148E1216 Manufactured by: Honeywell
Regular price
$714.00
Sale price
$714.00
Regular price
1 in Stock
Condition: New-Surplus Original Box
Shipping calculated at checkout.
Product Overview
The L8148E1216 is a dependable, high-limit aquastat relay designed for precise boiler over-temperature protection. While d...  Read more
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IQElectro 2-Year Warranty
Warranty for Product #: L8148E1216
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Product Description P/N: L8148E1216

Description / Specifications

Description 

The L8148E1216 is an immersion-type high-limit aquastat relay that provides essential boiler safety by monitoring water temperature and controlling burner and circulator circuits. It operates on 120VAC and is designed for precise and reliable temperature regulation in hydronic heating systems.

 

 

Technical Specifications 

Condition New/Never Used Surplus
Brand Honeywell
Category
Controls & Indicators
Part Number L8148E1216
Subcategory Temperature/Process Control
Function High-limit aquastat relay for boiler burner and circulator control
Voltage / Frequency 120VAC, 60 Hz
Thermostat Compatiblity 24VAC with 0.2A anticipator
Pressure Rating Immersion well rated to 255 psi (1758 kPa)
Ambient Temperature Max 150 °F (66 °C) at 1.2A load; 77 °F (25 °C) at 1.4A load
Temperature Range 140–240 °F or 180–240 °F models
Differential Non-adjustable
Mounting Options Horizontal or vertical immersion well
Remote Control Capability Supports low-limit or zone valve inputs
Vent Damper Plug E-model includes Molex plug support
Case Size     Approx. 6 ⅛″ × 4 ⅜″ × 3 ⅛″ (156 mm × 110 mm × 79 mm) 
Certifications / Approvals     UL-listed, CSA certified for hydronic applications
Status Discontinued by Honeywell
Weight 3.65 lb (1.66 kg) 

  

 

Information About L8148E1216

The L8148E1216, now discontinued by the manufacturer, is part of Honeywell's L8148E series of immersion-type relay controllers. It is designed for integration with forced hydronic systems and works with a 24VAC thermostat (with 0.2A heat anticipator). The relay includes high-limit protection that shuts off the burner when water temperature exceeds setpoint, while allowing the circulator to keep running if a thermostat call persists. The unit shares common features with related models in the series, such as options for remote low-limit control and a specific plug for vent damper systems. Rated for industrial-grade use, it can be mounted either horizontally or vertically and supports installation with well adapters and heat-conductive compounds. 

Key Features:

  • Immersion-Type Controller: Fits into boiler-compatible immersion well for accurate temperature sensing.
  • High-Limit Protection: Automatically interrupts burner circuit when water exceeds set threshold; circulator continues if thermostat remains active.
  • Thermostat Compatibility: Designed to work with 24VAC thermostats using a 0.2A heat anticipator.
  • Remote Input Terminal: Includes provision for low-limit sensor or zone valve wiring.
  • Vent Damper Plug Option: E-model supports plug-in to Honeywell vent dampers.
  • Flexible Mounting: Supports both horizontal and vertical orientation; includes well adapters.
  • Robust Construction: Rated for up to 255 psi pressure and ambient temperatures up to 150 °F depending on load.
  • Discontinued Model: No longer produced, with surplus items still on the market under warranty.
  • Thermostat Heat Anticipator: Factory set at 0.2A to optimize accuracy.
  • Temperature Scale Range: Typically between 140–240 °F with a fixed differential.

The L8148E1216 delivers reliable and customized temperature control necessary for safe hydronic heating operations.

IQElectro is not an authorized distributor.
IQElectro LLC (IQElectro) is NOT an Authorized Distributor or in any way affiliated with Rockwell Automation, Siemens, or any other Manufacturers. IQElectro is NOT an Authorized Dealer of this product. The product may be of older version, date codes, or design than that available from authorized dealers. As IQElectro is not an authorized dealer of this product, the Original Manufacturer's Warranty and Support DO NOT apply. IQElectro sells SURPLUS only and DOES NOT SELL SOFTWARE or FIRMWARE licenses For more detailed information, please refer to the full version of our disclaimer policy Disclaimer Policy.
Description / Specifications

Description 

The L8148E1216 is an immersion-type high-limit aquastat relay that provides essential boiler safety by monitoring water temperature and controlling burner and circulator circuits. It operates on 120VAC and is designed for precise and reliable temperature regulation in hydronic heating systems.

 

 

Technical Specifications 

Condition New/Never Used Surplus
Brand Honeywell
Category
Controls & Indicators
Part Number L8148E1216
Subcategory Temperature/Process Control
Function High-limit aquastat relay for boiler burner and circulator control
Voltage / Frequency 120VAC, 60 Hz
Thermostat Compatiblity 24VAC with 0.2A anticipator
Pressure Rating Immersion well rated to 255 psi (1758 kPa)
Ambient Temperature Max 150 °F (66 °C) at 1.2A load; 77 °F (25 °C) at 1.4A load
Temperature Range 140–240 °F or 180–240 °F models
Differential Non-adjustable
Mounting Options Horizontal or vertical immersion well
Remote Control Capability Supports low-limit or zone valve inputs
Vent Damper Plug E-model includes Molex plug support
Case Size     Approx. 6 ⅛″ × 4 ⅜″ × 3 ⅛″ (156 mm × 110 mm × 79 mm) 
Certifications / Approvals     UL-listed, CSA certified for hydronic applications
Status Discontinued by Honeywell
Weight 3.65 lb (1.66 kg) 

  

 

Information About L8148E1216

The L8148E1216, now discontinued by the manufacturer, is part of Honeywell's L8148E series of immersion-type relay controllers. It is designed for integration with forced hydronic systems and works with a 24VAC thermostat (with 0.2A heat anticipator). The relay includes high-limit protection that shuts off the burner when water temperature exceeds setpoint, while allowing the circulator to keep running if a thermostat call persists. The unit shares common features with related models in the series, such as options for remote low-limit control and a specific plug for vent damper systems. Rated for industrial-grade use, it can be mounted either horizontally or vertically and supports installation with well adapters and heat-conductive compounds. 

Key Features:

  • Immersion-Type Controller: Fits into boiler-compatible immersion well for accurate temperature sensing.
  • High-Limit Protection: Automatically interrupts burner circuit when water exceeds set threshold; circulator continues if thermostat remains active.
  • Thermostat Compatibility: Designed to work with 24VAC thermostats using a 0.2A heat anticipator.
  • Remote Input Terminal: Includes provision for low-limit sensor or zone valve wiring.
  • Vent Damper Plug Option: E-model supports plug-in to Honeywell vent dampers.
  • Flexible Mounting: Supports both horizontal and vertical orientation; includes well adapters.
  • Robust Construction: Rated for up to 255 psi pressure and ambient temperatures up to 150 °F depending on load.
  • Discontinued Model: No longer produced, with surplus items still on the market under warranty.
  • Thermostat Heat Anticipator: Factory set at 0.2A to optimize accuracy.
  • Temperature Scale Range: Typically between 140–240 °F with a fixed differential.

The L8148E1216 delivers reliable and customized temperature control necessary for safe hydronic heating operations.

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