Thermaco HAG-3 User Manual

®

HAG Air Gap Assembly

Big Dipper® HAG-2 Servicing a W-200-IS Unit

Options

The Big Dipper® HAG Horizontal Air Gap
Assembly Kit offers a simple yet effective

method for providing an air gap for meeting
health department or plumbing code require­ments. Among the many different methods
of creating an air gap to protect against cross­contamination, the most popular is an air gap
directly between the sink discharge and the
outow piping. This means that in the event
of a backup, efuent will spill out of this gap
under the sink discharge and directly onto the
oor without any danger of cross-contamina­tion. The optional eld-installable HAG-BA-
1 Solids Strainer Baskets collect incidental
solids from the drain ow.

How Does the HAG Air Gap Assembly Work?

Drain

Sink Drain Sink Drain Sink Drain

Flow

Control

2” Gap Min. (50 mm)

Flow

Control

Air Gap Drain Trough

2” Gap Min.

(50 mm)

Flow

Control

Flow

Support

Leg

*Optional HAG-BA-1

Solids Strainer Baskets

Not Shown

As the sink drains, efuent ows into the all stainless steel construction HAG Air Gap. The
ow is slowed down by ow controls (provided) attached at the end of each drain stem. There
is a 2” (50 mm) or greater gap between the bottom of the drain tailpiece and the drainage pip­ing. In the event of a blockage downstream of the sink, efuent ows out of this 2” (50 mm)
gap onto the kitchen oor preventing any cross-contamination between the sinks or contami­nation from efuent. The HAG Air Gap may also be plumbed through a Big Dipper® Auto­matic Grease & Oils Removal Unit. Incidental solids in the ow may be strained and collected
using the optional, eld-installable HAG-BA-1 Solids Strainer Baskets. The HAG is mounted
to the oor using threaded rod support legs and feet (supplied). A Bracket that mounts the
HAG assembly to the wall is also provided.

Tailpiece

Support

Leg

Big Dipper®

Unit

©2011 Thermaco, Inc. All rights reserved • Patented/Patents Pending • Specications subject to change without notice

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646 Greensboro St. • Asheboro, N. C. 27204-2548 • Phone [phone] • North America: [phone]

E-mail: [e-mail] • Online: www.big-dipper.com

1

®

HAG Air Gap Assembly

HAG-2 Horizontal Air Gap Trough Component

Options

2” (50 mm) Pipe Outlet

(10.1 cm)

4”
(10.2 cm)

3” (7.6 cm)

6” (15.2 cm)

Outlet View

Threaded Rod Support Leg

2” (50 mm) Pipe Outlet

Support Foot &

Side View

1.5”

(3.81 cm)

* The HAG-2 Air Gap is shipped in 72” (182.9 cm) lengths. It is eld-trimmed to t the appli­cation. It is recommended 8” (20.3 cm) be left behind the drain valve that is furthest from the
Big Dipper® unit. The threaded rod supports & wall mount brackets must also be trimmed to
t the sink installation. A 1/4” drop should be used for every 1’ of run (2 cm per meter).

HAG-3 Horizontal Air Gap Trough Component

4”

3” (150 mm) Pipe Outlet

3” (7.6 cm)

6” (15.2 cm)

Outlet View

3” (150 mm) Pipe Outlet

Support Foot &

Threaded Rod Support Leg

Side View

4” (10.2 cm)

1.5”

(3.81 cm)

* The HAG-3 Air Gap is shipped in 72” (182.9 cm) lengths. It is eld-trimmed to t the appli­cation. It is recommended 8” (20.3 cm) be left behind the drain valve that is furthest from the
Big Dipper® unit. The threaded rod supports & wall mount bracket must also be trimmed to
t the sink installation. A 1/4” drop should be used for every 1’ of run (2 cm per meter).

©2011 Thermaco, Inc. All rights reserved • Patented/Patents Pending • Specications subject to change without notice

2

646 Greensboro St. • Asheboro, N. C. 27204-2548 • Phone [phone] • North America: [phone]

E-mail: [e-mail] • Online: www.big-dipper.com

6/11