User's Manual

MTU Instructions
General Installation and Wiring Guidelines
Outdoor Mounting
MTUs mounted outdoors are typically
mounted to the side of buildings, to a
stationery post, to the piping surrounding
the meter, or to a pit lid.
Mounting to a Buiding or Post
If the unit is being mounted to the outside
of a building, the MTU will be connected
to wires that lead from the inside to the
outside of the building. If existing wire is
used, it must be of the same quality as
specified in MTU Wiring. It must also be
in good condition, without breaks,
damage, or corrosion.
Step 1 – Select a mounting location for
the MTU that will allow optimum signal
transmission.
Step 2 – Run wiring from the MTU to the
meter. If a splice is required, it may be
placed inside or outside. For special
circumstances, contact your supervisor.
If using existing wiring, remove any box
that houses the outside wires.
Step 3 – Mount the MTU on the side of
the building.
• The MTU must be mounted
level, vertically with the STAR
logo facing the installer. Allow a
1” space between the top of the
MTU and the overhang of the
siding above it. This is critical
for proper radio signal
transmission.
• Use a Spacer (Hexagram Part
Number 056-5155H1) if
mounting an Original Flatpak
STAR MTU on a non-wood
surface.
CAUTION!
Do not over tighten screws.
Excessive torque will crack
the MTU enclosure. Do not
tighten screws beyond the
point that the MTU touches
the mounting surface.
Step 4 – Make the appropriate
connections to the meter. Refer to the
specific MTU Instruction for the meter in
use.
Bar or Pipe Mounting
Particularly in outdoor gas applications, it
is sometimes convemient to mount the
MTU to the connecting piping. With the
Original Flatpak STAR MTU this is easily
done using a bar-mount spacer and two
18” long tie-wraps, (See Recommended
Supplies.)
Step 1 - Thread the tie-wraps into the bar
mount spacer as shown here.
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