The answer is yes. the section in question specifically
addresses residential "vapor" lines while the referenced
section in the energy code addresses "fluids" above
105F or below 55F. The reference in the residential code is
applied to all residential vapor piping.
M1411.5 Insulation of refrigerant piping.
Piping and fittings for refrigerant vapor (suction) lines
shall be insulated with insulation having a thermal
resistivity of at least R-4 and having external surface
permeance not exceeding 0.05 perm [2.87 ng/(s × m2 ×
Pa)] when tested in accordance with ASTM E 96.
FBC EC 403.3 Mechanical system piping insulation
(Mandatory). Mechanical system piping capable of carrying
fluids above 105°F (41°C) or below 55°F (13°C) shall be
insulated to a minimum of R-3.
