Antunes Controls 804112105 Pressure Switch

The Antunes Controls 804112105, model RHLGP-A, is a professional-grade automatic reset gas pressure switch designed for critical monitoring in industrial burners, boilers, and commercial HVACR systems. This dual-function high and low gas pressure switch ensures system safety by interrupting the electrical control circuit when gas pressures deviate from calibrated setpoints. The high-pressure side features an adjustable range of 5-28" W.C., while the low-pressure side monitors between 2-14" W.C., providing precise safety limit control for gas-fired equipment.

Engineered with a rugged die-cast aluminum housing, the 804112105 pressure switch is built for demanding mechanical rooms. It utilizes a 2-SPDT electrical configuration and offers versatile plumbing options, including a 3/8" NPT high pressure connection, a 1/8" NPT low pressure connection, and a 1/8" NPT vent. With a maximum surge pressure rating of 10 PSI and an ambient temperature range of -40°F to 140°F, this Antunes gas switch delivers the reliability necessary for rigorous combustion safeguard applications.

• Dual Monitoring Capability: Combines high and low pressure sensing into a single, compact RHLGP-A unit to simplify piping and wiring.
• Automatic Reset Logic: Eliminates manual intervention by re-engaging the circuit once pressures return to the safe operating range.
• Industrial Durability: The aluminum housing and covered terminals protect sensitive internal components from debris and mechanical damage.
• Standard NPT Ports: 3/8" and 1/8" inlets ensure compatibility with standard commercial gas manifolds and burner trains.

How do I adjust the setpoints on the 804112105?
Remove the protective cover to access the range scale adjustment knobs. Turn clockwise to increase the pressure threshold and counter-clockwise to decrease it. Always verify settings with a calibrated manometer after adjustment.

Can this switch be used in outdoor environments?
While the unit is rugged, it is designed for ambient temperatures between -40°F and 140°F. For extreme weather exposure, it is recommended to install the switch within a NEMA-rated enclosure or weather-shielded area.

What is the difference between the RHLGP-A and manual reset models?
The 804112105 is an automatic reset (Recycle type) switch. Unlike manual reset models that require a technician to physically depress a lever after a trip, this unit resets itself once the sensed gas pressure falls back within the high/low differential windows.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.