Daikin DCC Series, Руководство по установке

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14
MAINTENANCE
The Self Contained Packaged Air Conditioner and Heat
Pump should operate for many years without excessive
service calls if the unit is installed properly. However it is
recommended that the homeowner inspect the unit before
a seasonal start up. The coils should be free of debris so
adequate airflow is achieved. The return and supply regis -
ters should be free of any obstructions. The filters should be
cleaned or replaced. These few steps will help to keep the
product up time to a maximum. The Service section that
follows should help in identifying problems if the unit does
not operate properly.
f
ilters
Every application may require a different frequency of re-
placement of dirty filters. Filters must be replaced at least
every three (3) months during operating seasons.
Dirty filters are the most common cause of inadequate
heating or cooling performance. Filter inspection should be
made at least every two months; more often if necessary
because of local conditions and usage.
Dirty throwaway filters should be discarded and replaced
with a new, clean filter.
Disposable return air filters are supplied with this unit. See
the unit Specification Sheet or Technical Manual for the cor -
rect size and part number. To remove the filters, remove the
filter access panel on return side of the unit.
HIGH VOLTAGE!
D
ISCONNECT ALL POWER BEFORE SERVICING OR
INSTALLING THIS UNIT
. M
ULTIPLE POWER SOURCES MAY
BE PRESENT
. F
AILURE TO DO SO MAY CAUSE PROPERTY
DAMAGE
,
PERSONAL INJURY OR DEATH
.
WARNING
T
O PREVENT PERSONAL INJURY OR DEATH DUE TO IMPROPER
INSTALLATION
,
ADJUSTMENT
,
ALTERATION
,
SERVICE OR
MAINTENANCE
,
REFER TO THIS MANUAL
. F
OR ADDITIONAL
ASSISTANCE OR INFORMATION
,
CONSULT A QUALIFIED INSTALLER
,
SERVICE AGENCY OR THE GAS SUPPLIER
.
WARNING
S
HEET METAL PARTS
,
SCREWS
,
CLIPS AND SIMILAR ITEMS INHERENTLY
HAVE SHARP EDGES
,
AND IT IS NECESSARY THAT THE INSTALLER AND
SERVICE PERSONNEL EXERCISE CAUTION
.
CAUTION
CAUTION
T
O PREVENT PROPERTY DAMAGE DUE TO FIRE AND LOSS OF
EQUIPMENT EFFICIENCY OR EQUIPMENT DAMAGE DUE TO DUST AND LINT
BUILD UP ON INTERNAL PARTS, NEVER OPERATE UNIT WITHOUT AN AIR
FILTER INSTALLED IN THE RETURN AIR SYSTEM.
C
abinet
f
inish
m
aintenanCe
Use a fine grade automotive wax on the cabinet finish to
maintain the finish’s original high luster. This is especial -
ly important in installations with extended periods of direct
sunlight.
C
lean
O
utside
C
Oil
(Q
ualified
s
erviCer
O
nly
)
The coil with the outside air flowing over it should be in -
spected annually and cleaned as frequently as necessary to
keep the finned areas free of lint, hair and debris.
l
ubriCatiOn
The fan shaft bearings , the 1 to 2 HP supply fan motors, the
condenser fan motors and compressors are permanently
lubricated.
f
unCtiOnal
P
arts
Refer to the unit Parts Catalog for a list of functional parts.
Parts are available from your distributor.
TROUBLESHOOTING
THE FOLLOWING INFORMATION IS FOR USE BY QUAL-
IFIED SERVICE AGENCY ONLY: OTHERS SHOULD NOT
ATTEMPT TO SERVICE THIS EQUIPMENT.
Common Causes of Unsatisfactory Operation of Heat Pump
on the Heating Cycle.
I
NaDEquaTE
a
IR
V
OLuME
T
hROugh
I
NDOOR
C
OIL
When a heat pump is in the heating cycle, the indoor coil
is functioning as a condenser. The return air filter must al -
ways be clean, and sufficient air volume must pass through
the indoor coil to prevent excessive discharge pressure,
and high pressure cut out.
O
uTSIDE
a
IR INTO
R
ETuRN
D
uCT
Do not introduce cold outside air into the return duct of a
heat pump installation. For units with 2-speed motors, do
not allow air entering the indoor coil to drop below 65° F. Air
below this temperature will cause low discharge pressure,
thus low suction pressure, and excessive defrost cycling
resulting in low heating output. It may also cause false de-
frosting.
u
NDERChaRgE
An undercharged heat pump on the heating cycle will cause
low discharge pressure resulting in low suction pressure
and frost accumulation on the outdoor coil.
P
OOR
“T
ERMINaTINg
” S
ENSOR CONTaCT
The unit’s defrost terminating sensor must make good ther-
mal contact with the outdoor coil tubing. Poor contact may
not terminate the unit’s defrost cycle quickly enough to pre-
vent the unit from cutting out on high discharge pressure.