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Coil Section (MARC)

Coil Section (MARC)

The Heatcraft® Modular Auxiliary Removable Coil Unit (M.A.R.C. Unit) is essentially a cased coil. The M.A.R.C. unit can hold any coil type we manufacture, and all unit seams are sealed with silicone and weather-stripping to ensure a leak-free case. What makes our M.A.R.C. unit different from any other cased coil unit is the ability to remove the coil through an access panel. This access provides the opportunity to easily perform routine maintenance work on the enclosed coil and avoid the possibility of compromising the case’s integrity. Additionally, should there be a terminal problem with the coil, you’re able to replace the enclosed coil in lieu of purchasing an entirely new unit.

Each Heatcraft® M.A.R.C. unit is custom built to meet your specific application for:

  • Replacing coil sections in existing air handlers
  • Fitting limited-space applications or small door access where modular construction would be required (e.g.: cruise ships)
  • Adding heating/cooling to make-up air units
  • Auxiliary/supplemental heating or cooling
Coil Section Construction Americas EMEA APAC
Tubing 3/8”, 1/2” O.D. Cu & 5/8” O.D. Cu, CuNi, St Stl, Carbon Stl, AD Brass N/A N/A
Circuit Type Quarter, Half, Three Quarter, Single, One and one half, Double, Triple or Custom N/A N/A
Rows 1, 2, 3, 4, 5, 6, 8, 10, 12 N/A N/A
Fin Surface Sine Wave (corrugated), New Ripple (peak and valley) or Flat N/A N/A
Tube Patterns Various N/A N/A
Casing / Mounting 16 Gauge Galvanized or 304 Stainless Steel N/A N/A
Connections Carbon Steel, Stainless Steel, Red Brass, Copper (Braze, MPT, FPT, Victaulic, Welded) N/A N/A
Vents & Drains Standard N/A N/A
Fin Material Aluminum, Copper all tube sizes
Stainless Steel, Carbon Steel – 5/8″ Only
N/A N/A
Options Double Wall, Filter Rack/Hinged Access, Removable Coil, Extended V & D, 3/4″ Insul. N/A N/A
Links Certified Drawing: MarcUnit
Field Specification Drawing
N/A N/A
Coil Section Construction Americas EMEA APAC
Tubing 3/8”, 1/2” O.D. Cu & 5/8” O.D. Cu, CuNi, St Stl, Carbon Stl, AD Brass N/A N/A
Circuit Type Quarter, Half, Three Quarter, Single, One and one half, Double, Triple or Custom N/A N/A
Rows 1, 2, 3, 4, 5, 6, 8, 10, 12 N/A N/A
Fin Surface Sine Wave (corrugated), New Ripple (peak and valley) or Flat N/A N/A
Tube Patterns Various N/A N/A
Casing / Mounting 16 Gauge Galvanized or 304 Stainless Steel N/A N/A
Connections Carbon Steel, Stainless Steel, Red Brass, Copper (Braze, MPT, FPT, Victaulic, Welded) N/A N/A
Vents & Drains Standard N/A N/A
Fin Material Aluminum, Copper all tube sizes
Stainless Steel, Carbon Steel – 5/8″ Only
N/A N/A
Options Double Wall, Filter Rack/Hinged Access, Removable Coil, Extended V & D, 3/4″ Insul. N/A N/A
Links Certified Drawing: MarcUnit
Field Specification Drawing
N/A N/A

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