User's Manual

Wall Installation
R900 Wall and Pit MIU Installation and Maintenance Guide 23
Tools and Materials
Tables 1 and 2 on page 6 show the recommended tools and materials you may need
to successfully install the R900 MIU or to replace the MIU’s internal battery.
Site Selection
Installation and operation in moderate temperatures increase reliability and
product life. See “Environmental Conditions” on page 4.
Follow these guidelines when selecting a location to install the R900 MIU:
• For best results, Neptune recommends mounting the MIU on the outside of the
building and in a location that provides a direct line-of-sight to the path of the
meter reading device.
• For best results, Neptune recommends the MIU be installed approximately five
feet above the ground.
• The MIU must be installed in a vertical and upright position.
• The preferred mounting surface for the MIU is a flat wall, but it can also be
mounted to a pipe.
• The selected location should be clear of all obstructions.
• Avoid installing the MIU behind metal fences or walls.
• The maximum cable length between the encoder register and MIU depends on
the register’s manufacturer and model. Refer to
Table 6 on page -24 for maxi-
mum cable lengths.
Some items may not apply to your specific installation or the list may not contain all required tools
or materials.
Always follow your company’s safety practices and installation guidelines when installing an
MIU. Never perform an installation during a lightning storm or under excessively wet conditions.