Antunes Controls 804112103 Pressure Control

The Antunes Controls 804112103, model RHLGP-A, is a specialized dual-action high-low gas pressure switch designed for critical monitoring in industrial and commercial HVACR applications. This manual reset control ensures system safety by cutting the circuit when pressure exceeds the 10-50" W.C. high limit or drops below the 1-6" W.C. low limit. Engineered for reliability, the 804112103 features a robust diaphragm and high-precision sensing elements that manage gas train safety for boilers, ovens, and process heaters. The 1/4" NPT connection allows for standard integration into existing manifolds, while the SPDT switch configuration provides flexible electrical interfacing for alarm circuits or primary lockdowns. By monitoring combustion gas pressure, this Antunes pressure control prevents hazardous conditions resulting from regulator failure or supply fluctuations, making it a staple for contractors maintaining NFPA-compliant systems.

• Dual-Function Monitoring: Combines high and low pressure sensing in a single compact footprint to streamline gas train installations.
• Manual Reset Mechanism: Ensures technician intervention following a trip, preventing automated cycling during unsafe conditions.
• Wide Adjustable Range: Provides precise setpoint control with high-side limits up to 50" W.C. and low-side sensitivity down to 1" W.C.
• Industrial Construction: Designed to withstand the vibration and thermal cycling common in mechanical rooms and commercial kitchens.

How do I calibrate the setpoints on the RHLGP-A 804112103?
Adjustments are made via the internal scale plates; use a calibrated manometer to verify the trip points during commissioning to ensure accuracy within the gas pressure range.

Can this switch be used for both natural gas and LP applications?
Yes, the 804112103 is compatible with natural gas, LP gas, and air, provided the pressure settings remain within the specified range of the diaphragm.

What is the purpose of the manual reset on this pressure switch?
The manual reset acts as a safety lockout, requiring a contractor to inspect the system for the cause of the pressure deviation before resuming equipment operation.

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.