Installation Guidelines for Draw Thru Series Air Handlers

When choosing the proper model Draw Thru Air Handler, primary consideration should be given to calculated BTU loadds and available power supply.

AH-DT2 series air handlers are ductable units, desgined to be installed low incabin areas (under berths, loackers, etc.) and ducted to high supply air grilles. These units habe rotatable blower-motor assemblies, providing felxibility to fit specific space requirements and allowing for proper duct wirk installations. Combinations of remote mounted boxes may be used to supply air into more than one area from a single unit.

Securely fasten the AH-DT2 unit to a solid. level surface, using the four(4) mouting rails provided in the base. ROtate and secure the blower, if nesessary, to its proper position to provide the most direct routing of the ducting to transitions and supply air grilles. Route all ducting to be as smooth and straight as possible. Trim off excess ducting before making finalconnections. Secure the ducting every 48" (min.) to prevent movement while the vessel is under operation.

The return air grilles must be properly sized and located to allow adequate return air flow to the units. A clip-on type return air firlter is supplied standard with each grille. These filter assemblies should not be located in such a way as to allow the supply air stream to blow directly in poor performance.

The supply air grilles must be sized and located to allow for proper air circulation within the cbin area(s). Grille locations close to the ceiling or directed upwards provide for the best air circulations. Under sized grilles and crushed or kiked duct work will result in poor or inadequate air performance.

Never install your air conditioner air handler in bilge or engine room areas. Insure that the selected location is sealed from direct access to bilge and/or engine room vapours. Do not terminate condensate drain line within four(4) feet of any outlet of engine or generator exhaust systems, nor in a compartment housing an engine or generator, nor in a bilge (vapors can travel up the drain line), unless the drain is connected properly to a sealed condensate or shower sump pump. Failure to comply may allow bilge or engine room vapors to mix with the air conditioners return air and contaminate living areas.

Both condensation drain lines mut be connected to the air handler's two(2) drain pan spuds using reinforced flexible hose (5/8") and clamps. The drains may be teed together, providing there is a minimum drop of 2" from the drain pan to the tee fitting. The drain line must be routed downwards to a proper sump or overboard discharge. Check the drains upon completion by pouring two(2) quarts of water into the drain pan. Note: Condensation drain lines may need to be insulated when located in high heat load areas to prevent line sweating, which could cause water damage.

Water connections from the circulation circuit to the ait handler are to be reinforced flexible hose and clamps. Attach the hose to the 5/8" hose barb fittigns on the water inlet and outlet of the unit. All hose, pipe and connections must be insulated properly to prevent condensation. Use approved closed cell tube insulation (1/2" minimum) on the hose, and foam tape on the fittings, 5 or 6 wraps.

All wiring must be sized according to marine design standards. Only stranded, tinned copper wire is to used. All electrical connections to the air handler are to be made within the electrical junction boxes provided on the assembly. All units must be properly grounded.