Slab Mounting - Lennox Dave Signature XP21 Installation Instructions Manual

STEP 1 -- SETTING THE UNIT (Continued)
-- Unit Placement
CAUTION
As with any mechanical equipment, contact with sharp
sheet metal edges can result in personal injury. Take
care while handling this equipment and wear gloves and
protective clothing.
WARNING
To prevent personal injury, as well as damage to panels,
unit or structure, observe the following:
While installing or servicing this unit, carefully stow all
removed panels so that the panels will not cause injury
to personnel, objects or nearby structures. Also, take
care to store panels where they will not be subject to
damage (e.g., being bent or scratched).
While handling or stowing the panels, consider any
weather conditions (especially wind) that may cause
panels to be blown around and damaged.
NOTICE !
Roof Damage!
This system contains both refrigerant and oil. Some
rubber roofing material may absorb oil, causing the
rubber to degrade. Failure to follow this notice
could result in damage to roof surface.
IMPORTANT !
Exhaust vents from dryers, water heaters and
furnaces should be directed away from the outdoor
unit. Prolonged exposure to exhaust gases and the
chemicals contained within them may cause
condensation to form on the steel cabinet and other
metal components of the outdoor unit. This will
diminish unit performance and longevity.
PLACEMENT
INSTALL UNIT AWAY
FROM WINDOWS
TWO 90_ ELBOWS INSTALLED IN LINE SET
FIGURE 2
WILL REDUCE LINE SET VIBRATION
Install unit level or, if on a slope, maintain slope tolerance of 2 degrees
(or 2 inches per 5 feet [50 mm per 1.5 m]) away from building structure.
BUILDING
STRUCTURE
ELEVATED SLAB MOUNTING USING FEET
Use additional 2" SCH 40 male threaded adapters which can be
threaded into the female threaded adapters to make additional
adjustments to the level of the unit.
LEG DETAIL
This model is designed for use in check / expansion
valve systems only. An indoor expansion valve ap­
proved for use with HFC-410A refrigerant must be
ordered separately and installed prior to operating
the system.
Page 3

SLAB MOUNTING

DISCHARGE AIR
FIGURE 3
EXTENDERS
2" (50.8MM) SCH 40
FEMALE THREADED
ADAPTER
2" (50.8MM) SCH 40
MALE THREADED
ADAPTER
BASE
FIGURE 4
IMPORTANT !
MOUNTING
SLAB
GROUND LEVEL
XP21 SERIES