Daikin DCG Series Service Instructions Manual page 34

SYSTEM OPERATION
DRAIN PLUG
(FACTORY-INSTALLED)
Drain Pan (Side View)
Base Rail
Open Vent
2" Min
Drain Plug
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 accept-
able (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 connection, 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 neces-
sary to prevent this build-up from plugging the drain.
34
STANDARD
SIDE DRAIN
See NOTE
Roof Curb
STARTUP, ADJUSTMENTS, AND CHECKS
HIGH VOLTAGE!
T
O AVOID PERSONAL INJURY OR DEATH DUE TO
,
ELECTRICAL SHOCK BOND 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
T
O PREVENT PROPERTY DAMAGE OR PERSONAL INJURY
THE UNIT UNTIL ALL NECESSARY PRE
.
PERFORMED
MOVING MACHINERY HAZARD!
T
O PREVENT POSSIBLE PERSONAL INJURY OR DEATH
POWER TO THE UNIT AND PADLOCK IN THE
.
SERVICING FANS
C R
ONTRACTOR ESPONSIBILITY
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 operat-
ing all units simultaneously.
• Requirements are met for venting and combustion air.
• Air filters are in place.
• Input rate and temperature rise are adjusted per rating
plate.
• Return air temperature is maintained between 55°F
(13°C) and 80°F (27°C).
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
mounting curb to the roof, especially at the corners, for good
workmanship. Also check for leaks around gaskets. Note
any deficiencies in a separate report and forward to the
contractor.
WARNING
.
CAUTION
, D
O NOT START
-
CHECKS AND TEST HAVE BEEN
WARNING
,
DISCONNECT
"OFF"
POSITION BEFORE
C
HECK