Honeywell AC-250NXS User Manual page 9

This section describes how to install AC-250NXS Gas Meter. To install a gas meter, perform below steps:
3. The gas meter should be installed as close to level as possible in order to ensure accurate
operation.
4. Avoid installing the meter in locations where the meter casing is in direct contact with soil or
concrete walls. Alkali in concrete as well as other corrosive elements in soil can cause premature
corrosion of the meter casing.
5. Inlet and outlet pipe connections should be parallel. The height difference between the housing
connections should be no more than 1/4".
6. Hand tighten the inlet swivel cap. Pressurize the system to purge the air inside the meter through
the outlet. Please note that the line from the meter to the appliance(s) must also be purged prior to
lighting.
7. Hand tighten the outlet swivel cap. Using a pipe wrench, alternate between both swivel caps and
tighten approximately three flats (using approximately 20 ft/lb. torque). DO NOT OVER TIGHTEN,
damage to the rubber gasket inside the swivel cap may occur.
8. Check all connections for leaks.
© Elster American Meter Company LLC – 2020
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