Startup, Adjustments, And Checks - Daikin DSC Series Installation Instructions Manual

Base Rail
Open Vent
2" Min
NOTE: Trap should be deep enough to offset maximum
unit static difference. A minimum 4" trap is recommended.
Drain Connection
Install condensate drain trap as shown. Use 3/4" drain line and
fittings or larger. Do not operate without trap.
H D
ORIZONTAL RAIN
Drainage of condensate directly onto the roof may be acceptable
(refer to local code). It is recommended that a small drip pad of
either stone, mortar, wood or metal be provided to prevent any
possible damage to the roof. When using the horizontal drain con-
nection, check the drain plug in bottom connection to ensure it is
tight.
V D
ERTICAL RAIN
To use the bottom drain connection, remove the drain plug from
the bottom connection and install it in the horizontal connection.
C
LEANING
Due to the fact that drain pans in any air conditioning unit will
have some moisture in them, algae and fungus will grow due to
airborne bacteria and spores. Periodic cleaning is necessary to
prevent this build-up from plugging the drain.

STARTUP, ADJUSTMENTS, AND CHECKS

HIGH VOLTAGE!
T
O AVOID PERSONAL INJURY OR DEATH DUE TO
,
ELECTRICAL SHOCK B OND THE FRAME OF THIS UNIT TO
THE BUILDING ELECTRICAL GROUND BY USE OF THE
GROUNDING TERMINAL PROVIDED OR OTHER
. D
ACCEPTABLE MEANS ISCONNECT ALL POWER BEFORE
SERVICING OR INSTALLING THIS UNIT
P -S I
RE TARTUP NSTRUCTIONS
T
O PREVENT PROPERTY DAMAGE OR PERSONAL INJURY
START THE UNIT UNTIL ALL NECESSARY PRE
.
HAVE BEEN PERFORMED
Prior to the beginning of Startup, Adjustments, and Checks proce-
dures, the following steps should be completed in the building.
See NOTE
Drain Plug
WARNING
.
CAUTION
, D
-
CHECKS AND TESTS
MOVING MACHINERY HAZARD!
T
O PREVENT POSSIBLE PERSONAL INJURY OR DEATH
POWER TO THE UNIT AND PADLOCK IN THE
SERVICNG FANS
H S
EATING TARTUP
On new installations, or if a major component has been replaced,
the operation of the unit must be checked.
Check unit operation as outlined in the following instructions. If
Roof Curb
any sparking, odors, or unusual sounds are encountered, shut off
electrical power and recheck for wiring errors, or obstructions in
or near the blower motors. Duct covers must be removed before
operating unit.
The Startup, Adjustments, and Checks procedure provides a step-
by-step sequence which, if followed, will assure the proper startup
of the equipment in the minimum amount of time. Air balancing
of duct system is not considered part of this procedure. However,
it is an important phase of any air conditioning system startup and
should be performed upon completion of the Startup, Adjustments,
and Checks procedure. The Startup, Adjustments, and Checks pro-
cedure at outside ambients below 55°F should be limited to a readi-
ness check of the refrigeration system with the required final check
and calibration left to be completed when the outside ambient
rises above 55°F.
T H
EMPORARY
If the unit is to be used for temporary heating or cooling, a "Startup,
Adjustments, and Checks" must first be performed in accordance
with this manual. Damage or repairs due to failure to comply with
these requirements are not covered under the warranty. After
the machines are used for temporary heating or cooling, inspect
the coils, fans, and motors for unacceptable levels of construction
dust and dirt and install new filters.
C R
ONTRACTOR
The installing contractor must be certain that:
• All supply and return air ductwork is in place, properly
sealed, and corresponds with installation instructions.
• All thermostats are mounted and wired in accordance
with installation instructions.
• All electric power, all gas, hot water or steam line
connections, and the condensate drain installation have
been made to each unit on the job. These main supply
lines must be functional and capable of operating all units
simultaneously.
• All filters are in place.
R C I
OOF URB NSTALLATION
Inspect the roof curb for correct installation. The unit and curb
assembly should be level. Inspect the flashing of the roof mount-
O NOT
ing curb to the roof, especially at the corners, for good workman-
ship. Also check for leaks around gaskets. Note any deficiencies in
a separate report and forward to the contractor.
O
BSTRUCTIONS
9
WARNING
.
O C
EATING R OOLING
ESPONSIBILITY
C
HECK
, F C W
AN LEARANCE AND IRING
,
DISCONNECT
"OFF"
POSITION BEFORE