Raypak Professional Digital Natural Gas Pool Heater, 399,000 BTU, Cupro-Nickel | 013745 Bundle Connect to the return line

Connect to the return line using the supplied bypass tubing configuration

Why it matters: Accurate readings ensure the pump and filtration system operate within designed pressure ranges

Direct-Fit Replacement for Napoleon KB-35 Units

Piezo is a piezo ignitor used in compatible Pentair MiniMax heater systems

WFK-6 pump model

Raypak Professional Digital Natural Gas Pool Heater, 399,000 BTU, Cupro-Nickel | 013745 Bundle Connect to the return lineRaypak Professional Series Digital B R408 EN X #52 399,000 BTU Natural Gas Cupronickel Heater (6,0009,000 ft) The B R408 EN X is Raypak's top tier Professional Series heater bronze headers, cupro nickel heat exchanger, natural gas, maximum 399,000 BTU output. This #52 version is rated for high altitude installations, 6,0009,000 ft elevation. Quick Stats 399,000 BTU input the highest output in this lineup Natural gas Cupro nickel heat exchanger better