  We discuss the properties and LHC phenomenology of a potentially discoverable
heavy scalar boson ($s$) that arises in the context of the renormalizable
coloron model; the model also contains a light scalar, $h$, identifiable with
the 125 GeV state discovered by the LHC. These two scalar mass eigenstates are
admixtures of a weak doublet gauge eigenstate and a weak singlet gauge
eigenstate. A previous study set exclusion limits on the heavy $s$ scalar,
using the stability of the scalar potential, unitarity, electroweak precision
tests, LHC searches for the 125 GeV Higgs; it also briefly discussed the
$\sqrt{s} = 7,8$ TeV LHC searches for a heavy Higgs. In this work, we show how
the projected LHC sensitivity at $\sqrt{s} = 14$ TeV to the presence of a heavy
Higgs and to the detailed properties of the 125 GeV Higgs will further
constrain the properties of the new heavy $s$ scalar. Since the renormalizable
coloron model may contain spectator fermions to remove anomalies, we examine
several representative scenarios with different numbers of spectator fermions.
Our results are summarized in plots that overlay the current exclusion limits
on the $s$ boson with the projected sensitivity of the $\sqrt{s} = 14$ TeV LHC
to the new state. We find that the upcoming LHC searches should be sensitive to
an $s$ scalar of mass less than 1 TeV for essentially all of the model
parameter space in which the $h$ state differs from the Higgs boson of the SM.
More precisely, unless the mixing between the weak doublet and weak singlet
gauge-eigenstate scalars is zero, the 14 TeV LHC will be sensitive to the
presence of the non-standard heavy $s$ state that is characteristic of the
renormalizable coloron model.
