Weil McLain 383-500-407 Burner Replacement Kit Els PW 29614 The fail-safe direction (clockwise or

The fail-safe direction (clockwise or counter-clockwise) is easily determined by the orientation of the actuator on the shaft during installation

the regulator must be mounted in an upright

Use a small screwdriver to set the "off" time (interval between drains) and the "on" time (duration of the purge) to match your system’s condensate production rate

technicians should inspect the heat exchanger

the Zonefirst ZDB series is designed with field-serviceability in mind

Weil McLain 383-500-407 Burner Replacement Kit Els PW 29614 The fail-safe direction (clockwise orWhen you are troubleshooting an Ultra Gas Boiler that isn't maintaining a stable flame or is showing signs of combustion instability, the Weil McLain 383 500 407 Burner Replacement Kit is the specified OEM solution for Ultra 299 and Ultra 399 Series 1 and 2 units. This professional grade kit is engineered to restore the precise fuel to air mixture required for high efficiency condensing applications. As a genuine Weil McLain part, it ensures that the