General Mounting - Vertical / Horizontal Air Handler Units - LG MULTI V ARNU073M1A4 Installation Manual

Ducted indoor units

Table of Contents

Vertical / horizontal air handler units can be installed either in an upflow or a horizontal-left position.

General Guidelines

• Support platforms must be sturdy enough to support the air handler unit plus any accessories including filter boxes. The size of the

support must be bigger than the air handler unit; the unit itself must be placed at the center of the support.

• Vibration isolators (field-supplied) must be installed between the air handler unit and the support(s).

• Secure the plenum to support adapters and duct work.

• To prevent air leaks, seal all ducts following local codes.

• Follow all relevant building codes in installations in which an external condensate pan may be necessary. Supports for air handler units

must be located in or above the external condensate pan.

Specific Guidelines for Horizontal-Left Installation

• Units must not be installed where the access panels face up or down, nor where filter access is obstructed.

• If the air handler unit is suspended, use angled steel brackets with threaded rods as support.

• To ensure proper condensate drainage, the air handler unit must be installed so it is within 1/8" level of its length and

Figure 19: Upflow Installation.

Field-Supplied

Supply Duct

Field-Supplied

Return Plenum

GENERAL INSTALLATION GUIDELINES