The VF™ Water Heater is capable of firing from 100% to 25% or a 4:1
turndown ratio of rated input based on the current system demand. The VF’s modulating capability
is virtually limitless, and the water heater’s output is based strictly on the current system demand
and the required BTUs needed to maintain the desired system set point temperature.
VF Copper-Tube Vertical Water Heater
The VF™ Water Heater series delivers an exceptionally high thermal efficiency by combining an advanced modulating venturi-mixing gas/air ratio system with a vertical multi-pass copper heat exchanger for outstanding efficiency of up to 85% and low NOx emissions that meet the most stringent standards.