Item No. 0BL-00-012 Revised 07/19/2010 Copyright © 2008 Universal Metal Industries, Inc. Page 7
PART 4 Electrical Connection
IMPORTANT: Copy this page and next page to your electrical installer.
WARNING!
Ensure that the power supply is disconnected before proceeding. Verify that the power supply matches
the ratings found on the appliance data label before proceeding. The complete appliance must be properly
grounded at all times when electrical power is applied. Do not ground the appliance with the neutral (white) house
supply wire. A separate ground wire must be utilized. Failure to complete electrical connections properly may result
in damaged or non-functional systems. Follow instructions carefully to ensure proper installation.
It is the owner’s responsibility to ensure that a qualified person performs the electrical connection of this appliance.
The electrical installation, including minimum supply wire size, must comply with the National Electric Code
ANSI/NFPA 70-1990 (or latest revision) and local codes and ordinances. A copy of this standard may be obtained
from: National Fire Protection Association, 1 Batterymarch Park, Quincy, Massachusetts 02269-9101
INSTRUCTIONS:
A 15 to 20 amp electrical service is recommended for proper electrical supply. Before
determining, calculate amp ratings based on the product label found on the liner and the ventilator. Always observe
local building codes. Always use a dedicated circuit. Line load is calculated by adding the amperage of the halogen
lights to the rated amperage of the ventilator (either in-line or roof top). If the ventilator is rated in watts rather than
amps, divide the watts by 120 and this will give you the amperage rating. The Trade-Wind
®
liner is supplied with a
5.0 amp variable speed fan control. Make sure the rated amperage on the ventilator does not exceed 5.0 amps (or
700 watts).
CAUTION:
The neutral wire (usually white) for the blower/motor must connect to the same neutral wire that comes
from the electrical panel to the liner. It is recommended to run a white neutral wire from the liner’s white neutral wire
along the same path as the
red wire from the liner’s variable speed control to the blower/motor.
Variable-
Speed Control Wiring Details (for remote blowers, usually “in-line” blowers)
Black
120 volt AC from electrical panel (usually black) to liner
White
Neutral from electrical panel (white) to liner
Green
Ground from electrical panel (usually green) to liner
Red
120 volt AC variable control from liner to 120 volt AC of variable speed ventilator
CAUTION:
Do
NOT
connect this wire to a 3-speed blower.
3-Speed Switch Wiring Deta
ils (for remote blowers, usually “roof or wall” mounted blowers)
When connecting the liner to a 3-
speed remote blower, the wiring ―rough-in‖ to the blower must include 5 wires (4
conductor wires and 1 ground wire). This can be accomplished by using either two 2-strand Romex
®
type wires
(one must have a separate ground) or one 4-strand conductor plus one ground wire. The wire gage should be 14.
Black
120 volt AC from electrical panel (usually black) to liner
White
Neutral from electrical panel (white) to liner.
Green
Ground from electrical panel (usually green) to liner
Wire 1*
High Speed
from liner to blower
Wire 2*
Medium Speed
from liner to blower
Wire 3*
Low Speed
from liner to blower
Wire 4*
Neutral from liner to blower (usually green)
Wire 5*
Ground from liner to blower
* Consult the switch manufacturer's installation instructions and wiring diagram when substituting control switches.
IMPORTANT: Universal Metal Industries does not pay warranty claims for damage to liners or components connected to other
brand blowers inconsistent with these Installation Instructions. Always consult the switch manufacturer's installation
instructions when substituting control switches. The warranty may be voided if any unauthorized service, alterations or repairs
are made to the product.
