Product Overview

D
esign Envelope is a revolution-
ary technology pioneered by
Armstrong that oers simplified
circulator selection, lowest installed cost,
expanded application flexibility and
optimized energy eciency.
design envelope technology
• Quadratic Sensorless algorithm saves energy
• Patented Auto* mode optimizes energy savings
• 0–10v dc external speed control
* patent pct/ca/050868
kWh
Large wiring
chamber and
front-mounted
terminal block
he Compass
is the best
circulator for
your building.
value for owners
Comfort
Energy savings
Reliability
Reduced carbon footprint
value for wholesalers
Broad performance range
covers many applications and
replaces competing models
Easy selection
Reduced inventory requirements
value for contractors
Easy selection
Reduced storage needs -
one box in your truck covers
dozens of applications
Reliable and easy to install in
the field
energy savings
from
25
%
to
80
%