equipment noise eminating from the air handler. These treatments can produce a quieter installation, particularly in the heated space. However, they can increase the pressure drop in the duct system. Care must be taken to maintain the proper maximum pressure rise across the air handler, temperature rise and flow rate. This may mean increasing the duct size and/or reducing the blower speed. These treatments must be constructed and installed in accordance with NFPA and SMACNA construction standards. Consult with local codes for special requirements. For best sound performance, be sure to install all the needed gaskets and grommets around penetrations into the air handler, such as for electrical wiring.
Air handler INSTALLATION
The HMG**F1E, HMG**X1E & HCG**V1E Series Air Handler is shipped ready for vertical upflow installation and is approved for attic, basement, alcove/closet or crawlspace installation with zero clearance to combustibles. See Table 1 (page 4) for required installation clearances. This appliance is approved only for indoor use.
•The unit must be leveled at installation and attached to a properly installed duct system.
•The surface that the air handler is mounted on must provide sound physical support of the unit.
•The air handler must be installed so that all electrical components are protected from water.
•If a louvered door is installed across the front of this unit, the appliance must be mounted flush or behind front edge of finished wall.
•Always reinstall the doors on the air handler after servicing or cleaning/changing the filters.Do not operate the air handler without all doors and covers in place.
Packaging Removal
Remove the shipping crate and User’s Manual from the equipment. When removing the crate, use extra care so tubing connectios are not damaged. Do not pull on the coils upper tubes.
Mounting Applications
Vertical only air handlers are factory ready for upflow applications. These units may be applied in downflow applications when applied with the appropriate field kit.
Factory ready horizontal air handlers may be applied in upflow or
Horizontal |
Drain Pan |
Return |
Air |
Figure 1. Upflow Installation
Upflow Installations
All air handlers are factory shipped, ready for upflow installation. The horizontal drain pan may be removed from the air handler when installing the unit in an upflow configuration. All return air must enter from the bottom of the unit. A typical upflow unit is shown in Figure 1.
Downflow Installations
The downflow accessory kit (SeeTechnical Specifications) is required for downflow applications. Instructions for installing the downflow accessory kit are included with the kit.It is recommended that the accessory be installed prior to installing the unit. All return air in downflow applications must enter through the top of the unit. A typical installation of the unit in a downflow application is shown in Figure 2.
Cabinet
Tube
Plate
Adaptor Kit
Coil
Figure 2. Downflow Installation
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