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GROUND LEVEL -- HORIZONTAL UNITS
For ground level installations, the unit should be positioned on a pad
the size of the unit or larger. The unit must be level on the pad. The
pad must not come in contact with the structure (See Figure 11.) Be
sure the outdoor portion of the supply and return air ducts are as
short as possible.
Proceed with the installation as follows:
1. Place the unit on the pad and the five (5) rubber isolators
provided.
q
SIDING
EXTERIOR
WALL
INSULATE
WEATHERPROOF
OR RAIN SHIELD
A 3/4-inch female NPT condensate drain connection is provided on
the evaporator access panel end of the unit. See Figure 4. Provide
a trap and fill it with water before starting the unit to avoid air from
being drawn through. Follow local codes and standard piping
practices when running the drain line. Pitch the line downward away
from the unit. Avoid long horizontal runs. See Figure 12.
NOTE: Do not use reducing fittings in the drain lines. The
condensate drain must be:
●
Made of 3/4" pipe size.
●
Pitched 1/4" per foot to provide free drainage to convenient drain
system.
●
Trapped.
●
Must not be connected to closed drain system.
INSTALLATION
TYPICAL GROUND LEVEL APPLICATION
(YCZ036,050,060F MODELS)
SUPPLY AIR
RETURN AIR
DUCT
DUCT
FLEXIBLE DUCT
CONNECTORS
CONDENSATE DRAIN PIPING
2. Attach the supply and return air ducts to the unit.
3. Insulate any ductwork outside of the structure with at least 2
inches of insulation and weatherproof. There must be a weather-
proof seal where the duct enters the structure.
4. Complete the installation according to the instructions in the
following sections of this manual.
ISOLATORS
(1 PER CORNER
AND 1 UNDER
UNIT CONTROL BOX)
w
TYPICAL CONDENSATE DRAIN PIPING
3
/
" PVC OR COPPER
4
TUBING AND FITTINGS
1-1/2"
MIN.
OUTDOOR AIR
DISCHARGE
OUTDOOR AIR
INTAKE
FLUE
INLET HOOD
SUPPORT PAD
FOUNDATION
Page 11
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