Honeywell L8148A1017 High Limit Horizontal Aquastat Relay 120VAC for Hot Water Boilers
Honeywell · Relays, Contactors & Switches
Description The Honeywell L8148A1017 is a high-limit horizontal-mount Aquastat relay designed for hydronic heating systems. Operating at 120VAC, it provides precise temperature control with an adjustable high-limit range from 140°F to 240°F and a fixed 8°F differential. This relay includes a built-in transformer and SPST switching for both high-limit and circulator functions. Technical Specifications Condition New/Never Used Surplus Brand Honeywell Category HVAC Controls Part Number L8148A1017 Subcategory Aquastat Relay Type High Limit Aquastat Relay Mounting Type Horizontal Operating Voltage 120 VAC Control Circuit Voltage 24 VAC (thermostat circuit) High Limit Temperature Range 140°F to 240°F (60°C to 115°C) Temperature Differential Fixed 8°F (4.4°C) Insertion Well Depth 1½ to 3 inches Capillary Tube Length 4½ inches Switch Type SPST high limit and circulator switching Thermostat Requirement 24 VAC with heat anticipator set at 0.2A Transformer Built-in, provides power for low-voltage control circuit Housing Orientation Horizontal mounting case Function Controls burner circuit and circulator operation in hydronic heating systems Additional Terminals For connecting remote low-limit or zone valve controllers Enclosure Material Metal housing with protective finish Operating Environment For indoor installation in hydronic heating systems Country of Origin USA Weight 3.00 lbs Information About L8148A1017 The Honeywell L8148A1017 is part of Honeywell’s proven line of Aquastat relays used for high-limit control in hot water heating systems. It regulates water temperature by opening the burner circuit when the set limit is reached while controlling the circulator to maintain efficient heat distribution. The device comes equipped with a built-in transformer for powering the 24V thermostat circuit and includes dedicated terminals for optional remote low-limit controllers or zone valve systems. Designed for horizontal mounting, the L8148A1017 provides dependable control with an adjustable range from 140°F to 240°F and a fixed 8°F differential, ensuring stable operation and consistent system performance. Key Features High Limit Temperature Control: Opens the burner circuit when water reaches the selected limit between 140°F and 240°F. Fixed 8°F Differential: Ensures consistent temperature regulation for efficient boiler performance. Integrated Transformer: Supplies 24VAC power for thermostat and control circuits. Dual Function Switching: SPST design controls both the circulator and burner high-limit functions. Remote Control Compatibility: Includes terminals for connecting a low-limit controller or zone valve wiring. Durable Construction: Rugged metal housing ensures longevity and reliability in demanding HVAC applications. Flexible Installation: Designed for horizontal mounting with standard well depth and capillary configuration. Thermostat Compatibility: Works with any 24VAC thermostat with a 0.2A anticipator setting. The L8148A1017 delivers the reliability and precision required for hydronic heating systems, providing accurate temperature control, safety, and energy efficiency.
Brand: Honeywell · Category: Relays, Contactors & Switches
Key features
- High Limit Temperature Control: Opens the burner circuit when water reaches the selected limit between 140°F and 240°F.
- Fixed 8°F Differential: Ensures consistent temperature regulation for efficient boiler performance.
- Integrated Transformer: Supplies 24VAC power for thermostat and control circuits.
- Dual Function Switching: SPST design controls both the circulator and burner high-limit functions.
- Remote Control Compatibility: Includes terminals for connecting a low-limit controller or zone valve wiring.
- Durable Construction: Rugged metal housing ensures longevity and reliability in demanding HVAC applications.
- Flexible Installation: Designed for horizontal mounting with standard well depth and capillary configuration.
- Thermostat Compatibility: Works with any 24VAC thermostat with a 0.2A anticipator setting.
Specifications
| Manufacturer part number | L8148A1017 |
|---|---|
| Condition | New/Never Used Surplus |
| Brand | Honeywell |
| Category | HVAC Controls |
| Part Number | L8148A1017 |
| Subcategory | Aquastat Relay |
| Type | High Limit Aquastat Relay |
| Mounting Type | Horizontal |
| Operating Voltage | 120 VAC |
| Control Circuit Voltage | 24 VAC (thermostat circuit) |
| High Limit Temperature Range | 140°F to 240°F (60°C to 115°C) |
| Temperature Differential | Fixed 8°F (4.4°C) |
| Insertion Well Depth | 1½ to 3 inches |
| Capillary Tube Length | 4½ inches |
| Switch Type | SPST high limit and circulator switching |
| Thermostat Requirement | 24 VAC with heat anticipator set at 0.2A |
| Transformer | Built-in, provides power for low-voltage control circuit |
| Housing Orientation | Horizontal mounting case |
| Function | Controls burner circuit and circulator operation in hydronic heating systems |
| Additional Terminals | For connecting remote low-limit or zone valve controllers |
| Enclosure Material | Metal housing with protective finish |
| Operating Environment | For indoor installation in hydronic heating systems |
| Country of Origin | USA |
| Weight | 3.00 lbs |
| Product type | Aquastat Relay |
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