User's Manual

MTU Instruction
for AMCO and ABB Water Meters
Purpose & Scope
This instruction provides wiring information for use in connecting a STAR MTU to AMCO
and/or ABB water meters (all sizes) equipped with Invision, Scancoder, RS Pulser, Type
A Industrial Pulser, or AMCO Digital registers and with the AMCO/ABB V100/PSMT
meter, and the S130/5UM hot and cold water meters.
Invision
MTU Cable Invision Register
Red G (Green)
Black B (Black)
White R (Red)
Scancoder
MTU Cable Scancoder Register
Red G (Green)
Black B (Black)
White R (Red)
Supplies and Tools Required
See Publication 471-2000, General
Installation and Wiring Guidelines for a
complete list of recommended tools and
supplies for MTU Installation.
Installation Procedure
Step 1 - Select a mounting location for
the MTU that will allow optimum signal
transmission, and install any needed
wiring. Be sure to follow all General
Installation and Wiring Guidelines as
outlined in Publication 471-2000.
Step 2 – Select the wiring diagram that
applies to the meter you are connecting
and make the appropriate wiring
connections.
a. Direct Wiring to Meter - MTU wiring
is supplied stripped to a standard
length that fits water meters with
screw terminals. Simply wrap the
wires around the screw terminal and
tighten the screw. It is recommended
that the screws be tightened to no
more than 4 – 5 in-lbs. Overtightening
the screw can stress and possibly
fracture the wire.
471-2009 - 2/28/2006
Page 51