Thermaco VFCA-25 User Manual

Options

VFCA Vented Flow Control

Sometimes space restrictions require the installation of Big Dipper units in basement locations where signicant

head pressure becomes a factor. The Big Dipper® VFCA Vented Flow Control module provides an option for use

with installations where a signicant amount of head pressure is present (greater than 6 ft./1.95 m) or where ap­plicable regulations require vented ow controls. A Vented Flow Control helps reduce problems associated with
high head pressure and helps slow the drainwater ow down. The VFCA kit contains an appropriate tting and
ow control orice.

Flow Control Vent/Air Intake

(Note: Flow Control Vent may be connected to

atmosphere vent, facility vent, or code-approved

air admittance valve. To be installed above sink

ood rim.)

Drainage Piping

from Kitchen

Outlet Vent

(Note: Vent may be facility vent connection or

code-approved air admittance valve)

* Installation in high head height

locations requires removal of the

Internal Flow Control (small rub-

ber cap under no-hub coupling

over the Inlet).

Big Dipper®

IS Unit

VFCA-20 Vented Flow Control for W-200-IS
VFCA-25 Vented Flow Control

- for both W-250-IS & W-250-AST
VFCA-35 Vented Flow Control for W-350-IS
VFCA-50 Vented Flow Control for W-500-IS
VFCA-75 Vented Flow Control

- for both W-750-IS & W-750-AST
VFCA-125 Vented Flow Control

- for both W-1250-IS & W-1250-AST

Installations where head

height is greater than 6 feet

(1.95 m)

NOTE: Drawing for reference only. Equipment must be installed in compliance with all applicable laws, regu-

lations and codes, including plumbing codes. Installation should be performed by a qualied plumber.

©2014 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] • www.big-dipper.com

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