Installation Instructions

Rev. 3, 5/91 Installation Instruction 540-197
Copyright

1991 by Landis & Gyr Powers, Inc.  Printed in U.S.A. Page 1 of 2
INSTALLATION INSTRUCTIONS
Terminal Equipment Controller Relay Module
PRODUCT DESCRIPTION
The Terminal Equipment Controller Relay Module has
four high voltage (240 Vac, 1.2 Amp maximum) relays
mounted on a printed circuit board. A relay module
must be used in a Terminal Equipment Controller
application if the:

controlled load is high voltage AC (greater than 24
Vac).

controlled load is DC.

controlled load is powered from a transformer
separate from the transformer used to power the
Terminal Equipment Controller.
PRODUCT NUMBER
540-147
REQUIRED TOOLS

Medium-duty electric drill

1/8-in. (3 mm) drill bit

Medium and small flat-blade screwdrivers

Center punch and hammer

Wire cutters and strippers
PREREQUISITES

None
Figure 1. Relay Module.
INSTRUCTIONS
1. Remove the cover from the relay module. Do not remove the cover screws.
2. Using the bottom housing as a template, mark the outermost four mounting holes with a center punch. (Refer
to Figure 1.)
3. Drive the four self-drilling screws into the mounting surface to fasten the bottom housing to the mounting
surface.
-OR-
If you do not wish to self-drill the screws, drill four 1/8-inch (3 mm) pilot holes.
4. Remove the appropriate knockout from the relay module. Route the wires through the opening.