BMW/BMX Magic Aire Installation Instructions

The following Information is to be used by the installer as a guide. Since each installation is unique unto itself, only general topics are covered. The order in which topics are presented may not be those required by the actual installation. This guide does NOT supersede or circumvent any applicable national, state or local codes. The installation is to be performed only by individuals whose experience meets or exceeds the requirements of the work involved.

The installer MUST read the entire contents of this guide and develop a thorough understanding before beginning. Due to a continuing program of product research, MAGIC AIRE reserves the right to discontinue or change without notice, any or all specifications or designs without incurring obligations

OPTIONAL EQUIPMENT
1. Discharge grille / plenum.
2. Return air grille.
3. Two row hot water heating coil (reheat or preheat location).
4. Mixing boxes.
5. Motor and drive selections.
6. Steam coils (reheat or preheat)
7. Electric Heat (Field installed)
INSTALLATION
Step 1 - Ductwork Use accepted industry practices and design guide- lines of the ASHRAE FUNDAMENTALS HANDBOOK. Ductwork must comply with all building codes and the NATIONAL FIRE PROTECTION ASSOCIATION'S pamphlet 90A and 90B. Carefully inspect any previously installed ductwork to determine suitability. Note: Ductwork should be of a size meeting require- ments of the installation. Ductwork should transition gradually from a smaller size blower outlet to required duct run size to avoid excessive loss of air velocity.
Step 2 - Check duct insulation and vapor proofing Previously installed heating supply ductwork may already have adequate insulation against excessive heat loss. This insulation may be satisfactory for pro- tection against heat gain from summer cooling. De- pending upon application, it may be required to add more insulation. Externally insulated ductwork must have adequate vapor seal for summer operation, particularly where duct is exposed to high humidity conditions such as in attic, vented crawl space, unconditioned basement or utility room.
Step 3 - Ductwork.
1. When return air duct connection is smaller than coil inlet opening, construct the transition piece so that vertical and horizontal dimensions of transition do not increase more than one inch for every 7 inches of length.
2. Allow a minimum of 3 feet of straight ductwork preceding equipment inlet.
3. Install unit with Vs inch pitch toward condensate drain opening.
Step 4 - Sound Attenuation Flexible duct connections should be used between the unit and both the supply and return ducts. Unit vibration isolation will be required for both suspended and base mounted units.
Step 5 - Installation of Condensate Drain Condensate drain must consist of a minimum of 3U in. copper tubing or 3U in. galvanized iron pipe or PVC-type plastic pipe. (Fig. 1.) The condensate drain trap must be properly designed to ensure the removal of condensate (Incorrect trapping can hold water in pan causing overflow.) Be sure drain pitches down-ward at a slope of one inch every 10 feet.

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