12
C.3. Choosing a Location
C.3.1.Unit Location: Allowable
Clearances and Operational Issues
The unit location must comply with the allowable
clearances listed in
Figure C.3.1. - A.
Failure to
comply with the recommended clearances may result
in operational issues such as decreased capacity,
restricted condenser airflow, and condenser motor
fatigue.
Figure C.3.1. - A:
Allowable Clearances
C.3.2. Outside Installation
WARNING:
These units are designed certified
for outdoor installation only. Installation inside any part
of a structure can result in inadequate unit performance
as well as property damage. Installation inside can also
cause recirculation of flue products into the conditioned
space resulting in personal injury or death.
1. Select a location where external water drainage
cannot collect around unit.
2. Provide a level slab sufficiently high enough above
grade to prevent surface water from entering the unit
3. Locate the unit to provide proper access for
inspection and servicing as shown in
Figure C.3.1. -
A.
4. Locate unit where operating sounds will not
disturb owner or neighbors.
5. Locate unit so roof runoff water does not pour
directly on the unit. Provide gutter or other shielding
at roof level. Do not locate unit in an area where
excessive snow drifting may occur or accumulate.
6. Where snowfall is anticipated, the height of the
unit above the ground level must be considered.
Mount unit high enough to be above anticipated
maximum area snowfall and to allow combustion air
to enter the combustion air inlet.
7. Select an area which will keep the areas of the
vent, air intake, and A/C condenser fins free and
clear of obstructions such as weeds, shrubs, vines,
snow, etc. Inform the user accordingly.
C.3.3. Rooftop Installation
1. Before locating the unit on the roof, make
sure that the roof structure is adequate to
support the weight involved. (See Electrical &
Physical Tables in this manual.)
THIS IS VERY
IMPORTANT AND IS THE INSTALLER’S
RESPONSIBILITY.
2. For rigging and roofcurb details, see section
C.4.3.
3. The location of the unit on the roof should be
such as to provide proper access for inspection
and servicing.
IMPORTANT:
If unit will not be put into service
immediately, block off supply and return air
openings to prevent excessive condensation.
C.3.4. Corrosive Environments
The metal parts of this unit may be subject to rust or
deterioration in adverse environmental conditions. This
oxidation could shorten the equipment’s useful life. Salt
spray, fog or mist in seacoast areas, sulphur or chlorine
from lawn watering systems, and various chemical
contaminants from industries such as paper mills and
petroleum refineries are especially corrosive.
If the unit is to be installed in an area where
contaminants are likely to be a problem, give special
attention to the equipment location and exposure.
1. Avoid having lawn sprinkler heads spray directly on
the unit cabinet.
2. In coastal areas, install the unit on the side of the
building away from the waterfront.
3. In some situations, fencing or shrubs may give some
protection against contaminants. Be mindful of the
allowable clearances.
4. Frequent washing of the cabinet, fan blade and coil
with fresh water will remove most of the salt or other
contaminants that build up on the unit.
5. Regular cleaning and waxing of the cabinet with an
automobile polish will provide some protection.
6. A good liquid cleaner may be used several times a
year to remove matter that will not wash off with water.
Several different types of protective coatings are
offered in some areas. These coatings may provide
some benefit, but the effectiveness of such coating
materials cannot be verified by the equipment
manufacturer. The best protection is frequent cleaning,
maintenance and minimal exposure to
contaminants.
C. INSTALLATION OF THE UNIT
ST-A1273-19-00
&
$
%
'
(
48 [1219]
24 [609]
48 [1219]
24 [609]
60 [1524]
A - FRONT
B - CONDENSER END
C - DUCT END
*D - FILTER SIDE
E - ABOVE
5(&200(1'('
&/($5$1&(,Q>PP@
/2&$7,21
&/($5$1&(6
THE FOLLOWING MINIMUM CLEARACES MUST
BE OBSERVED FOR PROPER UNIT PERFOMANCE
AND SERVICEABLILITY.
1
2
18” [457 mm] MINIMUM IF DRAINPAN
WILL NOT BE REMOVED.
48” [1219 mm] MINIMUM IF ECONOMIZER IS INSTALLED.
2
1
Summary of Contents for Climate Master RGED Series
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