Description
SCHWANK JS-0578-BB Blocked Flue Switch Overview
The SCHWANK JS-0578-BB is a blocked flue safety switch engineered for use with SCHWANK gas-fired radiant heating systems. Designed to monitor flue and venting pressure, this switch detects abnormal backpressure conditions caused by a blocked, restricted, or failed flue pathway. When the sensed pressure reaches the 1.50″ W.C. (inches water column) setpoint, the switch opens the control circuit, shutting down the burner and preventing dangerous combustion gas spillage into the occupied space.
Key Features
- Factory-set trip point at 1.50″ W.C. (inches water column)
- Designed specifically for SCHWANK gas-fired radiant heating equipment
- Monitors flue/vent pressure to detect blocked or restricted venting conditions
- Opens control circuit upon detecting abnormal pressure — shuts down burner for safety
- Provides critical protection against combustion gas spillage
- Direct OEM replacement part for compatible SCHWANK heater models
- Compact, reliable switching mechanism for dependable long-term operation
Application
The JS-0578-BB is intended as an OEM replacement or service part for SCHWANK radiant heating systems. It is installed in the venting/flue circuit of the heater and works in conjunction with the burner control system to ensure safe operation. If the flue becomes obstructed — due to debris, bird nests, ice, or mechanical failure — the switch responds immediately to prevent unsafe heater operation.
Why Choose OEM SCHWANK Parts
Using genuine SCHWANK replacement components ensures proper fit, calibrated setpoints, and reliable performance consistent with the original equipment design. The JS-0578-BB is precision-calibrated to the 1.50″ W.C. threshold required by compatible SCHWANK heater models, ensuring accurate and repeatable safety response.
Specifications
- Part Number: JS-0578-BB
- Brand: SCHWANK
- Type: Blocked Flue Pressure Switch
- Setpoint: 1.50″ W.C. (inches water column)
- Function: Safety shutoff upon blocked/restricted flue detection
- Application: SCHWANK gas-fired radiant heating systems
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