A.O. Smith VF User Manual

The Art Of Flexibility

The new VF Series variable fire
copper boilers are designed with
one thing in mind: to provide
the best value to the customer.
As a result, we’re proud to
introduce a more installation
friendly line that works well in
more applications and requires
less maintenance.

The secret to the stunning
performance of the VF Series is
its flexibility. The VF is capable of
firing from 100% to 25% or a
4:1 turndown ratio. The boiler’
output is based strictly on the
current system demand and
required BTUs needed to maintain
the desired system set point
temperature. The VF’s modulating
capability is vir

tually limitless.

s

ef

-

y

ficiency

ficient

The VF Boiler sets a high ef
standard by combining thermal
efficiencies up to 88% with a
smoother
overall system operation.

, more energ