Installation Position Requirements - Mars Comfort-Aire Century VCD24 SA Series Installation Manual

Installation and Operation Manual - VCDxxSA

Installation Position Requirements

Vertical installations
NOTICE FOR DUCT CONNECTIONS：
It should be assembled
accordance to the
instructions.
More Requirements
• Air supply and return may be handled in one of several ways best suited to the installation (See table
for dimensions for duct inlet and outlet connections). The vast majority of problems encountered
with combination cooling systems can be linked to improperly designed or installed duct systems.
It is therefore highly important to the success of an installation that the duct system be properly
designed and installed. Use flexible duct collars to minimize the transmission of vibration/noise into
the conditioned space. Where return air duct is short, or where sound could potentially to be a
problem, sound absorbing liner should be used inside the duct.
• Duct must be insulated where it runs through an unconditioned space during the cooling season.
The use of a vapor barrier is recommended to prevent absorption of moisture from the surrounding
air into the insulation.
• The supply air duct connection should be properly sized by use of a transition to match unit opening.
• All ducts should be suspended using flexible hangers and never fastened directly to the structure.
This unit is not designed for nonducted (freeblow) applications.
• Duct work should be fabricated and installed in accordance with local and/or national codes.
It should be insulated
and use a Vapor Barrier.
10
Horizontal installations
It should be Flexible
suspension mounted
and not fastened
It should be fabricated
and installed in
accordance with local
and/or national codes.