Daikin DCH048 Series Service Instructions Manual page 53

PRODUCT DESIGN
UNIT LOCATION
T
O PREVENT POSSIBLE EQUIPMENT DAMAGE
,
PERSONAL INJURY OR DEATH
OBSERVED WHEN INSTALLING THE UNIT
IMPORTANT NOTE: Remove wood shipping rails and metal
shipping brace (if applicable) prior to installation of the unit on
a roof curb.
A I :
LL NSTALLATIONS
NOTE: Appliance is shipped from factory for vertical duct
application.
Proper installation of the unit ensures trouble-free operation.
Improper installation can result in problems ranging from
noisy operation to property or equipment damages, danger-
ous conditions that could result in injury or personal property
damage. Give this booklet to the user and explain it's
provisions. The user should retain these instructions for future
reference.
•
For proper flame pattern within the heat exchanger and
proper condensate drainage, the unit must be mounted
level.
•
The flue outlet must be at least 12 inches from any
opening through which flue gases could enter a building,
and at least three feet above any forced air inlet located
within ten feet. The economizer/manual fresh air intake/
motorized fresh air intake and combustion air inlet
mounted on the unit are not affected by this restriction.
•
To avoid possible corrosion of the heat exchanger, do not
locate the unit in an area where the outdoor air (i.e.
combustion air for the unit) will be frequently contami-
nated by compounds containing chlorine or fluorine.
Common sources of such compounds include swimming
pool chemicals and chlorine bleaches, paint stripper,
adhesives, paints, varnishes, sealers, waxes (which are
not yet dried) and solvents used during construction and
remodeling. Various commercial and industrial processes
may also be sources of chlorine/fluorine compounds.
•
To avoid possible illness or death of the building occu-
pants, do NOT locate outside air intake device (econo-
mizer, manual fresh air intake, motorized fresh air intake)
too close to an exhaust outlet, gas vent termination, or
plumbing vent outlet. For specific distances required,
consult local codes.
•
Allow minimum clearances from the enclosure for fire
protection, proper operation, and service access (see
unit clearances). These clearances must be perma-
nently maintained.
•
The combustion air inlet and flue outlet on the unit must
never be obstructed. If used, do not allow the econo-
mizer/manual fresh air damper/ motorized fresh air damper
to become blocked by snow or debris. In some climates
or locations, it may be necessary to elevate the unit to
avoid these problems.
WARNING
,
PROPERTY DAMAGE
THE FOLLOWING BULLET POINTS MUST BE
.
•
When the unit is heating, the temperature of the return air
entering the unit must be between 50° F and 100° F.
G L I
ROUND EVEL
•
When the unit is installed on the ground adjacent to the
,
building, a level concrete (or equal) base is recom-
mended. Prepare a base that is 3" larger than the
package unit footprint and a minimum of 3" thick.
•
The base should also be located where no runoff of water
from higher ground can collect in the unit.
R I
OOF TOP NSTALLATIONS
•
To avoid possible property damage or personal injury, the
roof must have sufficient structural strength to carry the
weight of the unit(s) and snow or water loads as required
by local codes. Consult a structural engineer to deter-
mine the weight capabilities of the roof.
•
The unit may be installed directly on wood floors or on
Class A, Class B, or Class C roof covering material.
•
To avoid possible personal injury, a safe, flat surface for
service personnel should be provided.
•
As indicated on the unit data plate, a minimum clearance
of 36" to any combustible material is required on the
furnace access side of the unit. All combustible mate-
rials must be kept out of this area.
•
This 36" clearance must also be maintained to insure
proper combustion air and flue gas flow. The combustion
air intake and furnace flue discharge must not be blocked
for any reason, including blockage by snow.
•
Adequate clearances from the furnace flue discharge to
any adjacent public walkways, adjacent buildings, build-
ing openings or openable windows must be maintained in
accordance with the latest edition of the National Fuel
Gas Code (ANSI Z223.1)
•
Minimum horizontal clearance of 48" from the furnace flue
discharge to any electric meters, gas meters, regulators
and relief equipment is required.
U P
NIT RECAUTIONS
• Do not stand or walk on the unit.
• Do not drill holes anywhere in panels or in the base
frame of the unit except where indicated. Unit access
panels provide structural support.
• Do not remove any access panels until unit has been
installed on roof curb or field supplied structure.
• Do not roll unit across finished roof without prior
approval of owner or architect.
• Do not skid or slide on any surface as this may damage
unit base. The unit must be stored on a flat, level
surface. Protect the condenser coil because it is
easily damaged.
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