CK-56

Gas Conversion Kit (LP to NG)

Can be used for both NRC661 and NRC661A

Compatible Heaters

NRC661(A)-DV-LP

NRC661(A)-OD-LP

After your order has been received, a member of our Sales Department will reach out via email to request the Serial and Model Number of your tankless water heater. The Serial Number is typically located on a white sticker and will be in this format 20##.## - ######