Table of Contents
Advertisement
half to 1" thickness of insulation is usually sufficient for ductwork inside the air condi-
tioned space.
Balancing dampers should be provided for each branch duct in the supply system.
Ductwork should be properly supported from the structure.
When installing ductwork, consider the following items:
1. Noncombustible flexible connectors should be used between ductwork and unit to
reduce noise and vibration transmission into the ductwork.
2. When auxiliary heaters are installed, use noncombustible flexible connectors and
clearance to combustible material of 0" for the first 3 feet of discharge duct.
Clearance to unit top and side is 0".
X. FILTERS
This unit is provided with disposable filters. When replacing filters, ensure they are
inserted fully to the back to prevent bypass.
XI. CONVERSION PROCEDURE
DOWNFLOW TO HORIZONTAL
1. Remove the screws and covers from the outside of the supply and return sections.
2. Install the covers in the bottom supply and return openings with the painted side
up. See Figure 11. Use the existing gasket to seal the covers.
fIguRE 11
COVER gASKET DETAIL
3. Secure the supply cover to the base of the unit with 1 screw, engaging prepunched
tab in unit base.
4. Secure the return cover to the base of the unit with screws, engaging prepunched
holes in the unit base.
XII. CONDENSATE DRAIN
IMpORTANT: Install a condensate trap to ensure proper condensate drainage.
See figure 12.
The condensate drain pan has a threaded female 3/4 inch NPT connection. Consult
local codes or ordinances for specific requirements of condensate drain piping and
disposal.
• Use a thin layer of Teflon tape or paste on drain pan connections and install only
hand tight.
• Do not over tighten drain pan connections as damage to the drain pan may occur.
• Drain line MUST NOT block service access panels.
• Drain line must be no smaller than drain pan outlet and adequately sized to
accommodate the condensate discharge from the unit.
• Drain line should slope away from unit a minimum of 1/8" per foot to ensure proper
drainage.
• Drain line must be routed to an acceptable drain or outdoors in accordance with
local codes.
• Do not connect condensate drain line to a closed sewer pipe.
• Drain line may need insulation or freeze protection in certain applications.
ILL I631
13
Advertisement
Table of Contents
