Gas Piping - Lennox B-VENT METIT Series Installation Instructions Manual

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Gas Piping

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1 - Lennox gas fireplaces are shipped standard for left
or right side or bottom installation of gas piping. Sim-
ply connect gas supply to gas valve. Gas valve con-
nection is 3/8 in.
2 - When connecting gas supply, factors such as length
of run, number of fittings and furnace rating (if appli-
cable) must be considered to avoid excessive pres-
sure drop.
3 - Gas piping must not run in or through air ducts,
clothes chutes, chimneys or gas vents, dumb waiters
or elevator shafts.
4 - Piping should be sloped 1/4 inch per 15 feet upward to-
ward the meter from the appliance. The piping must be
supported at proper intervals (every 8 to 10 feet) using
suitable hangers or straps.
5 - In some localities, codes may require installation of
an equipment shut-off valve and union (both fur-
nished by installer) external to the unit. Union must
be of the ground joint type. See figure 11.
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FIGURE 11