ACV 420709 middle section

Middle Heat Exchanger Section 420709 – Genuine ACV Boiler Part. Middle heat exchanger section 420709 serves as the central component of the heat exchanger in ACV boilers, ensuring heat distribution consistency across the sections. Installed on: HeatMaster 71 HeatMaster 101 Prestige Box Mono 100 Benefits: Even heat transfer Compatibility with adjacent sections Durable and reliable build