EDUS281008
Installation of outdoor unit
Installation of indoor / outdoor unit
51
2
11
English
Vacuum drying
•
- Use a vacuum pump
THAT
can evacuate
up to
MICRONSORLESS
[Procedure]
$ONOTENERGIZETHEINDOORUNITBEFOREPERFORMING
THEVACUUMDRYING
/PERATETHEVACUUMPUMPFOREVACUATIONFORHOURSORMORE
USINGBOTHLIQUIDPIPEANDGASPIPEUNTILTHEVACUUMPRESSURE
REACHESMICRONSORLESS,EAVEATTHISFORHOURORMORE
ANDCONFIRMTHATTHEVACUUMPRESSUREINDICATEDBYTHE
VACUUMGAUGEDOESNOTINCREASE)FTHEVACUUMPRESSURE
I
NCREASESTHESYSTEMMAYCONTAINMOISTUREORHAVELEAKAGE
)FTHEREISAPOSSIBILITYOFMOISTUREREMAININGINTHEPIPING
&ORTHISINSTANCEATRIPLEEVACUATIONISRECOMMENDEDNOTE
THATTHISISBASICREFRIGERATIONBESTPRACTICEANDNOTSPECIFICTO
$AIKIN
4HEREFRIGERANTGAUGESSHOULDBECONNECTEDTOTHELIQUIDAND
SUCTIONGASPIPESANDATRIPLEEVACUATIONPERFORMED
"REAKTHEFIRSTANDSECONDVACUUMWITHDRYNITROGEN
4HEFINALEVACUATIONSHOULDBETO
BELOW
MICRONSAND
ARISETESTCONDUCTEDTHESYSTEMSHOULDHOLD
BELOW
MICRONSFORATLEASTONEHOUR
Additional refrigerant charge
6-7
WARNING
To avoid injury always use protective gloves and eye protec-
•
tion when charging refrigerant.
To avoid injury do not charge with unsuitable substances.
•
Use only the appropriate refrigerant.
NOTE
Refrigerant cannot be charged until fi eld wiring has been
•
completed.
Refrigerant may only be charged after performing the air-
tight test and the vacuum drying (see above).
When charging refrigerant into the system, take care that its
maximum allowable charge is never exceeded, in view of the
danger of liquid hammer.
Refrigerant containers shall be opened slowly.
To avoid compressor breakdown, do not charge the refriger-
ant more than the specifed amount to raise the condensing
pressure.
This outdoor unit is factory charged with refrigerant.
•
Charge the additional refrigerant calculated by the formula
•
below.
Additional charging
amount =
Liquid piping length
× 0.036 +
Additional charging
depended on type
of indoor unit
(lb.)
(ft.)×0.036 A
(lb.)
Indoor unit
FTQ
Additional charging
A (lb.)
1.54
Record the additional amount to the label sticked on the back
of front panel.
Charge the refrigerant to the liquid pipe in its liquid state.
•
Since R410A is a mixed refrigerant, its composition changes
if charged in a state of gas and normal system operation
would no longer be assured.
Before fi lling, check whether the tank has a siphon attached
•
or not.
How to fi ll a tank with a siphon attached.
Th
ere
is
a
si
pho
n
tu
be
inside,
s
o th
ere
is
n
o
need
to tu
rn
th
e
t
an
k up
side
-
d
o
wn.
F
i
ll
wi
th th
e
t
an
k up
rig
ht
.
Other ways of fi lling the tank
F
i
ll
wi
th th
e
t
an
k up
side
-
d
o
wn.
After the vacuum drying is fi nished, charge the additional
•
refrigerant in its liquid state through the liquid stop valve
service port.
Taking into account following instructions:
Check that gas and liquid stop valves are closed.
1.
Charge the specifi ed amount of refrigerant.
2.
If the outdoor unit is not in operation and the total amount
•
cannot be charged, follow the procedures for additional
refrigerant charge shown below.
Make sure to use installation tools you exclusively use on
•
R410A installations to withstand the pressure and to prevent
foreign materials from mixing into the system.
Procedures for charging additional refrigerant.
•
N
i
t
r
o
gen
Dott
ed
l
ines
re
p
resen
t
f
ie
l
d
p
i
p
ing
Cyl
inder
S
top v
a
lv
e
ser
v
i
c
e
po
r
t
V
a
cuu
m
pu
m
p
Weig
h
ing
s
c
a
l
e
Ch
arge
ho
se
R
410
A
P
ress
u
re
red
uc
ing
v
a
lv
e
Out
d
oo
r
u
ni
t
I
nd
oo
r
u
ni
t
s
L
i
qu
id
l
ine
G
as
l
ine
(
Si
pho
n
s
y
s
t
em
)
V
a
lv
e
A
See the “Service Precautions” label on the back of the front
panel for the settings for operation after replenishing refriger-
ant.
Open the gas line stop valve (leaving the liquid line stop
1.
valve, valve A in the diagram above, close) and perform the
operation to add the refrigerant.
Once the appropriate amount of refrigerant is in, press the
2.
confi rmation button (BS3) on the outdoor unit PC board
(A1P), and stop operation.
Open the stop valves quickly (both liquid and gas line
3.
valves).
(This must be done quickly to avoid the possibility that the
pipe might burst.)
Содержание FTQ-PA
Страница 1: ...EDUS281008 Split System Air Conditioners Air Handling Unit FTQ PA RZQ P9 ...
Страница 12: ...EDUS281008 Dimensions and service space FTQ PA RZQ P 9 1 3D06421 ...
Страница 15: ...Piping diagrams EDUS281008 12 FTQ PA RZQ P 5 2 Outdoor unit RZQ18PVJU9 RZQ24PVJU9 3D062238B ...
Страница 17: ...Wiring diagrams EDUS281008 14 FTQ PA RZQ P 6 2 Outdoor unit RZQ18PVJU9 RZQ24PVJU9 3D062307B GROUND GROUND ...
Страница 18: ...EDUS281008 Wiring diagrams FTQ PA RZQ P 15 1 6 3 External connection diagram RZQ18PVJU9 RZQ24PVJU9 3D064230 ...
Страница 20: ...EDUS281008 Electrical characteristics FTQ PA RZQ P 17 1 7 2 Electric heater ...
Страница 24: ...EDUS281008 Capacity tables FTQ PA RZQ P 21 1 9 2 Capacity correction ratio RZQ18PVJU9 RZQ24PVJU9 C 3D064228A ...
Страница 25: ...Operation limits EDUS281008 22 FTQ PA RZQ P 10 Operation limits RZQ18PVJU9 RZQ24PVJU9 3D064229 ...