Raypak has taken the design technology for modulatingvertical boilers to the next level with the all new MVB.By precisely matching the latest control and combustioncomponents, the optimum fuel-air ratio is maintainedthroughout the entire range of load-tracking operation.This system-matched approach allows the MVB toachieve 87% thermal efficiency. A 4:1 turndowncapability ensures the exact input to match theheating demand and maximizes efficiency