27128-2 AERCO Boiler GAS PRESSURE SWITCH KIT

Normal Stock Item 

Replaces Part Number 61002-11

AERCO 27128‑2 is the OEM Gas Pressure Switch Kit used on AERCO boilers and water heaters. Grounded distributor data confirms its identity, function, and pricing across multiple reputable suppliers.

🔧 Core Identity & Function

Part Number: 27128‑2 Component: Gas Pressure Switch Kit OEM: AERCO Replaces: 61002‑12 (this is the correct replacement for 61002‑12; 27128‑1 replaces 61002‑11)

This switch monitors gas supply pressure and ensures the burner only operates when pressure is within safe limits. If pressure drops too low, the switch opens the circuit and prevents ignition—protecting the boiler from misfire, unstable combustion, or raw‑gas accumulation.

⚙️ Technical Role

Grounded listings describe the kit as a gas‑pressure safety interlock designed for AERCO combustion systems. It is used to:

• Detect insufficient gas pressure

• Prevent burner operation under unsafe conditions

• Maintain stable combustion and code‑compliant safety

• Replace discontinued legacy switch 61002‑12

Applications

Used in:

• AERCO commercial boilers

• AERCO commercial water heaters

Typical service scenarios:

• Gas‑pressure lockouts

• Burner ignition failures

• Gas‑train modernization

• Replacement of legacy 61002‑12 switches

AERCO 27128‑2 Gas Pressure Switch Kit — OEM safety switch for AERCO boilers and water heaters. Monitors inlet gas pressure and interrupts burner operation when pressure falls below safe limits, preventing misfire and ensuring stable, code‑compliant combustion. Direct replacement for legacy part 61002‑12.