CK-57

Gas Conversion Kit (NG to LP)

Can be used for both NRC661 and NRC661A

Compatible Heaters

NRC661(A)-DV-NG

NRC661(A)-OD-NG

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##.## - ######