

L8148E1216 | Honeywell Aquastat Relay Boiler Control
- Regular price
- $714.00
- Sale price
- $714.00
- Regular price
-
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Product Description P/N: L8148E1216
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.
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.
