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Honeywell L8124C1003 Horizontal-Mount Triple Aquastat Boiler Control Relay
- Regular price
- $595.00
- Sale price
- $595.00
- Regular price
-
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Product Description P/N: L8124C1003
Description
The Honeywell L8124C1003 is a Triple Aquastat relay that combines high-limit protection, low-limit temperature control, and circulator switching for hydronic heating systems. It operates on 120 VAC and mounts horizontally to monitor boiler water temperature and coordinate burner and circulator operation.
Technical Specifications
| Condition | New/Never Used Surplus |
| Brand | Honeywell |
| Category | HVAC Controls |
| Part Number | L8124C1003 |
| Subcategory | Boiler Aquastat Relays |
| Product Type | Triple Aquastat relay |
| Series | L8124 |
| Control Functions | High limit, low limit, and circulator control |
| Supply Voltage | 120 VAC |
| Frequency | 60 Hz |
| High-Limit Setting Range | 130°F–240°F (54°C–116°C) |
| Low-Limit Setting Range | 110°F–220°F (43°C–104°C) |
| Temperature Differentials | High limit: 10°F fixed; low limit: 10°F–25°F adjustable |
| Limit Switching Action | SPST high- and low-limit switches |
| Burner and Circulator Full-Load Ratings | 7.4 A at 120 VAC; 3.7 A at 240 VAC |
| Maximum Operating Pressure | 200 psi outside immersion well; 100 psi on capsule when inserted directly |
| Mounting Type | Horizontal |
| Electrical Connections | Quick-connect / screw terminals |
| Dimensions | 4⅜ in H × 6⅛ in W × 3¹⁄₁₆ in D (111 × 156 × 78 mm) |
| Weight | 3.00 lb (1.36 kg) |
Information About L8124C1003
The L8124C1003 is part of the Honeywell L8124 family of immersion-type boiler controls. A diaphragm powerhead and temperature-responsive switch assembly translate changes in water temperature into control actions. Its low-limit function supports applications requiring maintained boiler temperature, including compatible domestic hot water arrangements. The assembly uses quick-connect and screw terminals for electrical connections.
Key Features:
- Triple Control Function: Combines high-limit protection, low-limit regulation, and circulator control in one assembly.
- Adjustable High Limit: Provides a high-limit setting range of 130°F to 240°F.
- Fixed High-Limit Differential: Uses a 10°F differential for high-limit operation.
- Adjustable Low Limit: Offers a low-limit setting range of 110°F to 220°F.
- Variable Low-Limit Differential: Allows differential adjustment from 10°F to 25°F.
- Horizontal Mounting: Accommodates the specified horizontal boiler installation arrangement.
- Immersion Temperature Sensing: Monitors boiler water temperature through the appropriate sensing installation.
- Line-Voltage Operation: Uses a 120 VAC, 60 Hz power supply.
The L8124C1003 delivers the reliability and precision required for boiler temperature regulation and coordinated burner and circulator control.
Description
The Honeywell L8124C1003 is a Triple Aquastat relay that combines high-limit protection, low-limit temperature control, and circulator switching for hydronic heating systems. It operates on 120 VAC and mounts horizontally to monitor boiler water temperature and coordinate burner and circulator operation.
Technical Specifications
| Condition | New/Never Used Surplus |
| Brand | Honeywell |
| Category | HVAC Controls |
| Part Number | L8124C1003 |
| Subcategory | Boiler Aquastat Relays |
| Product Type | Triple Aquastat relay |
| Series | L8124 |
| Control Functions | High limit, low limit, and circulator control |
| Supply Voltage | 120 VAC |
| Frequency | 60 Hz |
| High-Limit Setting Range | 130°F–240°F (54°C–116°C) |
| Low-Limit Setting Range | 110°F–220°F (43°C–104°C) |
| Temperature Differentials | High limit: 10°F fixed; low limit: 10°F–25°F adjustable |
| Limit Switching Action | SPST high- and low-limit switches |
| Burner and Circulator Full-Load Ratings | 7.4 A at 120 VAC; 3.7 A at 240 VAC |
| Maximum Operating Pressure | 200 psi outside immersion well; 100 psi on capsule when inserted directly |
| Mounting Type | Horizontal |
| Electrical Connections | Quick-connect / screw terminals |
| Dimensions | 4⅜ in H × 6⅛ in W × 3¹⁄₁₆ in D (111 × 156 × 78 mm) |
| Weight | 3.00 lb (1.36 kg) |
Information About L8124C1003
The L8124C1003 is part of the Honeywell L8124 family of immersion-type boiler controls. A diaphragm powerhead and temperature-responsive switch assembly translate changes in water temperature into control actions. Its low-limit function supports applications requiring maintained boiler temperature, including compatible domestic hot water arrangements. The assembly uses quick-connect and screw terminals for electrical connections.
Key Features:
- Triple Control Function: Combines high-limit protection, low-limit regulation, and circulator control in one assembly.
- Adjustable High Limit: Provides a high-limit setting range of 130°F to 240°F.
- Fixed High-Limit Differential: Uses a 10°F differential for high-limit operation.
- Adjustable Low Limit: Offers a low-limit setting range of 110°F to 220°F.
- Variable Low-Limit Differential: Allows differential adjustment from 10°F to 25°F.
- Horizontal Mounting: Accommodates the specified horizontal boiler installation arrangement.
- Immersion Temperature Sensing: Monitors boiler water temperature through the appropriate sensing installation.
- Line-Voltage Operation: Uses a 120 VAC, 60 Hz power supply.
The L8124C1003 delivers the reliability and precision required for boiler temperature regulation and coordinated burner and circulator control.
