Honeywell L8124 Triple Aquastat® Relay
Immersion-type controllers that combine high limit protection with low limit and circulator control in forced hydronic heating systems, including domestic hot water service.
• Immersion-type controllers that combine high limit protection with low limit and circulator control in forced hydronic heating systems.
• Provide multizone control by using a separate circulator and R845 Relay for each zone.
• Include diaphragm powerhead and Micro Switch® assembly that respond to temperature changes in boiler water.
• Mount directly to boiler.
• Select models include large transformers and extra terminals for supplying power to low voltage zone valves.
• Require 24 Vac thermostat with heat anticipator set at 0.2 A (plus current draw of gas valve on L8124E).
• TRADELINE models include tube of heat conductive compound and range stops.
Select a link under the "item" tab below to order.
| Mounting | Cat # | Application: |
| Vertical | L8124A1007 | High Limit Protection, Low Limit Circulation Control |
| Vertical | L8124A1015 | High Limit Protection, Low Limit Circulation Control |
| Vertical | L8124B1039 * | Triple Aquastat Relay with High limit |
| Horizontal | L8124C1003 | Triple Aquastat Relay with High limit |
| Horizontal | L8124C1102 | High Limit Protection, Low Limit Circulation Control |
| Vertical | L8124E1016 ** | Triple Aquastat Relay with High limit |
| Vertical | L8124G1020 | Triple Aquastat Relay with High limit |
| Horizontal | L8124L1011 | Triple Aquastat Relay with High limit |
| Dimensions, Approximate: | 6 1/8 in. high x 4 3/8 in. wide x 3 1/16 in. deep (156 mm high x 111 mm wide x 78 mm deep) | ||
| Voltage: | 120 Vac | ||
| Maximum Ambient Temperature: | 150 F at switches, 265 F at sensing element (66 C at switches, 129 C at sensing element.) | ||
| Operating Range, High Limit: | 130 F to 240 F adj. (54 C to 116 C adj.) | ||
| Operating Range, Low Limit: | 110 F to 220 F adj. (43 C to 104 C adj.) | ||
| Maximum Operating Pressure: | 200 psi on outside of immersion well, 100 psi on capsule if inserted directly. (1378 kPa on outside of immersion well, 690 kPa on capsule if inserted directly.) | ||
| Operating Humidity Range (% RH): | 0 to 95% RH, non-condensing | ||
| Approvals: | |||
| Canadian Standards Association: | File No. LR1620, Guide No. 400-E-O | ||
| Underwriters Laboratories Inc. | UL Listed (models with well): File No. MP466, Guide No. MBPR; UL Component Recognized (models without well): File No. MP466, Guide No. MBPR2 | ||
