5
RIG AND MOUNT UNIT
Mounting on Ground
Mount unit on a solid, level concrete pad. Position unit so water or
ice from roof does not fall directly onto unit. Accessory stacking
kits can be used when units are to be stacked. See installation
instructions provided with the accessory kit. Use field--provided
snow stand or ice rack where prolonged subfreezing temperatures
or heavy snow occurs.
If conditions or local codes require unit be fastened to a pad, 6
field--supplied tiedown bolts should be used and fastened through
slots provided in unit mounting feet.
For hurricane tie downs -- contact your local distributor for details
and PE (Professional Certification), if required by local authorities.
Mounting on Roof
Mount unit on a level platform or frame at least 6 in. (152.4 mm)
above roof surface. Isolate unit and tubing from structure.
Rigging
PERSONAL
INJURY
AND/OR
EQUIPMENT
DAMAGE HAZARD
Failure to follow this caution may result in personal injury
and/or equipment damage.
Be sure unit panels are securely in place prior to rigging.
CAUTION
!
Keep the unit upright and lift unit using a sling. Use cardboard or
padding under the sling, and spreader bars to prevent sling damage
to the unit. See Fig. 4. See Fig. 3 for center of gravity reference.
Install the unit so that the coil does not face into prevailing winds.
If this is not possible and constant winds above 25 mph are
expected, use accessory wind baffle. See installation instructions
provided with the accessory kit.
NOTE
: Accessory wind baffles should be used on all units with
accessory low ambient temperature control.
Field--fabricated snow or ice stands may be used to raise unit when
operation will be required during winter months. Units may also be
wall mounted using the accessory wall mounting kit.
A07396
Fig. 4 -- Lifting Unit with Sling
COMPLETE REFRIGERANT PIPING
CONNECTIONS
Outdoor units may be connected to indoor units using
field--supplied tubing of refrigerant grade and condition. See Table
1 for correct line sizes. Do not use less than 10 ft (3.05 m) of
interconnecting tubing.
CAUTION
!
UNIT DAMAGE HAZARD
Failure to follow this caution may result in equipment
damage or improper operation.
If any section of pipe is buried, there must be a 6 in. (152.4
mm) vertical rise to the valve connections on the outdoor
unit. If more than the recommended length is buried,
refrigerant may migrate to cooler, buried section during
extended periods of system shutdown. This causes
refrigerant slugging and could possibly damage the
compressor at start--up.
When more than 80 ft (24.4 m) of interconnecting tubing is used,
consult the Duct--Free Split System Long Line Application Guide
for required accessories. If either refrigerant tubing or indoor coil
is exposed to the atmosphere, the system must be evacuated
following good refrigeration practices.
Run refrigerant tubes as directly as possible. Insulate both tubes,
avoiding unnecessary turns and bends. Suspend refrigerant tubes to
avoid damage to insulation or tubes so that they do not transmit
vibration to structure. Also, when passing refrigerant tubes through
a wall, seal the opening so rain or insects do not enter structure.
Leave some slack in refrigerant tubes between structure and
outdoor unit to absorb vibration. Refer to separate indoor unit
installation instructions for additional information.
Filter Drier
Refer to Fig. 2 and install filter drier as follows:
1. Assemble all parts as shown in Fig. 2
2. The filter drier must be replaced whenever the refrigeration
system is exposed to the atmosphere.
3. Only use factory specified liquid--line filter driers with rated
working pressures less than 600 psig.
NOTE
: Do not install a suction--line filter drier in liquid line.
38Q
RF
