Honeywell, R8182H1070/U, Triple Aquastat Relay

Honeywell R8182H1070 Aquastat Relay – High Limit and Circulator Control

The Honeywell R8182H1070 Aquastat Relay provides combined high-limit protection, circulator control, and burner management for oil-fired hydronic heating systems. It is designed for use in forced hot water heating systems that require control of both circulator operation and burner cycling, based on temperature settings and system demand.

This immersion-type controller features integrated high-limit and low-limit aquastat functions along with a switching relay. It includes terminals for burner, circulator, and zone control connections, making it suitable for systems with zone valves or single circulator loops.

Control Features

• High Limit Control: Opens burner circuit when boiler water temperature exceeds set limit.
• Low Limit and Circulator Control: Maintains boiler water temperature and controls circulator based on system demand.
• Flame Safety Lockout: Integrated safety timing feature shuts off the burner on ignition failure, requiring manual reset.
• ZC and ZR Terminals: Allow compatibility with zone valve circulator systems.

Technical Specifications

• Model: R8182H1070/U
• Temperature Range: 130°F to 240°F (high limit)
• Differential: Fixed 10°F (nominal)
• Voltage: 120 VAC
• Humidity Range: 0%–95% RH (non-condensing)
• Capillary Length: 5 ft armored capillary
• Insertion Depth: 1-1/2"
• Mounting: Horizontal or vertical immersion well (not included)

Installation Requirements

The R8182H1070 should be installed by qualified technicians familiar with oil burner circuits and hydronic system controls. Proper calibration and verification of limit settings and wiring connections are essential to ensure system safety and reliable operation. The controller mounts via standard junction box configuration and requires a separate immersion well if not replacing an existing unit.

Application Notes for Contractors

• Suited for residential or light commercial oil-fired hot water systems with single-stage burner control.
• Includes terminals for burner, circulator, and thermostat integration.
• Compatible with intermittent ignition systems and circulator zoning configurations.
• Use in conjunction with system transformer for 24V thermostat circuits where applicable.

Summary

The Honeywell R8182H1070 is a multifunctional control relay that combines aquastat temperature protection with burner and circulator control. Its integrated features support efficient operation and safeguard system performance in oil-fired hydronic heating applications.