York PHG6A24 Installation Manual

Also see for PHG6A24: Technical guide

5322625-UIM-A-0417Johnson Controls Unitary Products 7DUCTWORKThese units are adaptable to downflow use as well as rear supply andreturn air duct openings. To convert to downflow, use the followingsteps:1. Remove the duct covers found in the bottom return and supply airduct openings.2. Install the duct covers (removed in step one) to the rear supply andreturn air duct openings.3. Seal duct covers with silicone caulk.Duct work should be designed and sized according to the methods ofthe Air Conditioning Contractors of America (ACCA), as set forth in theirManual D.A closed return duct system shall be used. This shall not preclude useof economizers or ventilation air intake. Flexible joints are recom-mended to be used in the supply and return duct work to minimize thetransmission of vibration and noise.Refer to Figures 4 and 5 for information concerning rear and bottomsupply and return air duct openings.FILTERSProper filter size is very important. Filter size, type and pressure dropshould always be considered during duct system design.Single phase units are shipped without a filter or filter racks. It is theresponsibility of the installer to secure a filter in the return air ductworkor install a Filter/Frame Kit.A filter rack and high velocity filters are standard on three phase units.Filters must always be used and must be kept clean. When filtersbecome dirt laden, insufficient air will be delivered by the blower,decreasing your units efficiency and increasing operating costs andwear-and-tear on the unit and controls.Filters should be checked monthly; this is especially important since thisunit is used for both heating and cooling.CONDENSATE DRAINA condensate trap must be installed in the condensate drain. Theplumbing must conform to local codes.Use Teflon tape or pipe thread compound if needed.NOTICEAll units are shipped in the horizontal supply/return configuration. It isimportant to reduce the possibility of any air leakage through the bot-tom duct covers (resulting from cut, torn, or rolled gasket) due toimproper handling or shipping processes. To ensure a good tightseal, it is recommended that silicone caulk and/or foil tape be appliedalong the cover edges.NOTICEBe sure to note supply and return openings.CAUTIONHand tighten only.!Model A B C D E F24, 30 10 21.5 5 4.5 47.5 3236, 42, 48, 60 14 13.5 5 3.5 47.5 42FIGURE 4: Bottom Duct Dimensions (inches)Model A B24, 30 9.6 2236, 42, 48, 60 13.6 14FIGURE 5: Rear Duct Dimensions (inches)' &$%$$6833/<$,5'8&75(7851$,5'8&7)(9,(:/22.,1*83$7%277202)81,7$ % $ $6833/<$,5'8&75(7851$,5'8&7