H T C R

HOW TO CHOOSE THE RIGHT AQUECOIL™ HWC DUCT COIL
Bindus Manufacturing, LLC currently offers three different series of duct coils in the HWC family.
To keep things simple, they are the A-Series, B-Series, and C-Series. All units have copper waterways
and are suitable for use with boilers as well as conventional or tankless potable hot water heaters. The
aluminum fins are mechanically bonded to the copper water tubes to maximize heat transfer.
A-Series
This series is the most common style of duct coil in use today.
It uses 1/2” inch waterways and is stocked in a number of common
sizes. All units have a steel flange that extends 1” from the finned
area creating a frame around the coil. You can choose whether you
want a 2-row or 3-row heat exchanger without affecting the unit
thickness.
Installation usually consists of cutting the ductwork completely
open and creating a flange to attach to the steel flange of the hydronic
coil. The installer then insulates the exposed sides and ends of the
coil.
B-Series
This series is less commonly found in the field. It uses 3/8”
inch waterways and is stocked in three sizes. There is a steel flange
protecting the u-bends and an aluminum plate that runs along the fins
on the other edges. It is available in 2-row configurations only. A
factory installed bleed port is included. This series comes with flanges
already attached and ready to insert into the duct sections.
Installation consists of cutting a slot into the ductwork on one or
more sides and then sliding the coil into the newly created slot. The
installer insulates the ductwork as required.
C-Series
This series is rapidly gaining in popularity. It uses 3/8” inch
waterways and is stocked in three sizes. A fully insulated, aluminum
cabinet encloses the coil. It is available in 2-row configurations only.
A factory installed bleed port is included. The HWC C-Series has
openings similar to the discharge opening of air handlers. The flange
measures 1” to allow for easy connection to ductwork.
Installation consists of attaching the ductwork to both sides of
the HWC using the cabinet’s flanges. There is no need to add
additional insulation to the coil.
Please refer to the appropriate specification sheet for performance data and sizes.
Contact the manufacturer directly with any questions via phone, fax or through the website.
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