if power is present but the solenoids fail to open or maintain stable manifold pressure

How do I know if my D-251 actuator requires a new diaphragm

Can I use a universal spark rod instead of this OEM kit

always check local codes regarding lead-free requirements for drinking water

Reznor 17909 Fan Blade 319848-301 if power is present butThe Reznor 17909 Fan Blade is a direct replacement component engineered specifically for Reznor F and B series unit heaters. This 16 inch, 4 blade aluminum fan assembly is designed with a 23 degree pitch and a 1 2 inch bore for precise fitment on Model F165 and Model F200 gas fired equipment. To maintain optimal airflow and static pressure, the blades are precision balanced to minimize vibration and prevent premature motor bearing fatigue. When