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EDUS04-924A
Installation Manual
Room Air Conditioners H-Series
31
Align the centers of
b
oth flares and tighten the flare n
u
ts 3 or 4 t
u
rns
b
y hand. Then tighten them f
u
lly
w
ith the tor
qu
e
w
renches.
Refri
g
erant Pipin
g
Work
2.
Refri
g
erant pipin
g
.
2-1. Caution on pipin
g
handlin
g
.
1) Protect the open end of the pipe against d
u
st and moist
u
re.
2) All pipe
b
ends sho
u
ld
b
e as gentle as possi
b
le. Use a pipe
b
ender for
b
ending.
2-2. Selection of copper and heat insulation materials.
•
W
hen
u
sing commercial copper pipes and fittings, o
b
ser
v
e the follo
w
ing:
1) Ins
u
lation material: Polyethylene foam
Heat transfer rate: 0.041 to 0.052
W
/mK (0.024-0.030Bt
u
/fth°F (0.035-0.045kcal/mh°C))
Refrigerant gas pipe’s s
u
rface temperat
u
re reaches 230°F (110°C) max.
Choose heat ins
u
lation materials that
w
ill
w
ithstand this temperat
u
re.
2) Be s
u
re to ins
u
late
b
oth the gas and li
qu
id piping and to pro
v
ide
ins
u
lation dimensions as
b
elo
w
.
3) Use separate thermal ins
u
lation pipes for gas and li
qu
id refrigerant pipes.
Flare n
u
t tightening tor
qu
e
Gas side
Li
qu
id side
45.6-55.6ft · l
b
f
(61.
8
-75.4
N
· m)
24.1-29.4ft · l
b
f
(32.7-39.9
N
· m)
5/
8
inch (15.9mm)
3/
8
inch (9.5mm)
1) Use the flare n
u
t fixed to the main
u
nit to pre
v
ent cracking d
u
e to age-deterioration.
2) To pre
v
ent gas leakage, apply refrigeration oil only to the inner s
u
rface of the flare. (Use refrigeration
oil for R410A.)
3) Use tor
qu
e
w
renches
w
hen tightening the flare n
u
ts to pre
v
ent damage to the flare n
u
ts and gas leakage.
CAUTION
1.
Flarin
g
the pipe end.
1) C
u
t the pipe end
w
ith a pipe c
u
tter.
2) Remo
v
e
bu
rrs
w
ith the c
u
t s
u
rface facing
do
w
n
w
ard so that the chips do not enter the
pipe.
3) P
u
t the flare n
u
t on the pipe.
4) Flare the pipe.
5) Check that the flaring is properly made.
1) Do not
u
se mineral oil on flared part.
2) Pre
v
ent mineral oil from getting into the system as this
w
o
u
ld red
u
ce the lifetime of the
u
nits.
3)
N
e
v
er
u
se piping
w
hich has
b
een
u
sed for pre
v
io
u
s installations. Only
u
se parts
w
hich are deli
v
ered
w
ith the
u
nit.
4)
N
e
v
er install a drier to this R410A
u
nit in order to g
u
arantee it’s lifetime.
5) The drying material may dissol
v
e and damage the system.
6) Incomplete flaring may ca
u
se refrigerant gas leakage.
WARNING
Gas pipe thermal ins
u
lation
Li
qu
id side
Gas side
Li
qu
id pipe thermal ins
u
lation
I.D. 0.630-0.7
8
7 inch (16-20mm)
O.D. 3/
8
inch (9.5mm)
O.D. 5/
8
inch (15.9mm)
I.D. 0.472-0.591 inch (12-15mm)
Minim
u
m
b
end radi
u
s
Thickness 0.393 inch (10mm) Min.
1-3/16 inch (30mm) or more
1-15/16 inch (50mm) or more
Thickness 0.031 inch (0.
8
mm) (C1220T-O)
Thickness 0.039 inch (1mm) (C1220T-O)
W
all
If no flare cap is
a
v
aila
b
le, co
v
er the
flare mo
u
th
w
ith
tape to keep dirt or
w
ater o
u
t.
Be s
u
re to
place a cap.
Rain
Gas pipe
Li
qu
id pipe
Gas pipe
ins
u
lation
Li
qu
id pipe
ins
u
lation
Finishing tape
Drain hose
Inter-
u
nit
w
ire
Tor
qu
e
w
rench
Piping
u
nion
Flare n
u
t
Do not apply refrigeration
oil to the o
u
ter s
u
rface.
Flare n
u
t
Apply refrigeration oil to the
inner s
u
rface of the flare.
Do not apply refrigeration oil to the flare
n
u
t to a
v
oid tightening
w
ith o
v
er tor
qu
e.
Spanner
[Apply oil]
[Tighten]
(C
u
t exactly at
right angles.)
Remo
v
e
bu
rrs
Set exactly at the position sho
w
n
b
elo
w
.
A
Flaring
Die
A
0-0.020 inch (0-0.5mm)
Cl
u
tch-type
Flare tool for R410A
0.039-0.059 inch (1.0-1.5mm)
Cl
u
tch-type (Rigid-type)
0.059-0.079 inch (1.5-2.0mm)
W
ing-n
u
t type (Imperial-type)
Con
v
entional flare tool
Check
Flare’s inner
s
u
rface m
u
st
b
e fla
w
-free.
The pipe end m
u
st
b
e e
v
enly flared in
a perfect circle.
Make s
u
re that the
flare n
u
t is fitted.
Summary of Contents for H-Series
Page 1: ...EDUS04 924A H Series Cooling Only Heat Pump...
Page 50: ...EDUS04 924A Operation Manual Safety Considerations Room Air Conditioners H Series 49...
Page 51: ...Operation Manual Safety Considerations EDUS04 924A 50 Room Air Conditioners H Series...
Page 52: ...EDUS04 924A Operation Manual Safety Considerations Room Air Conditioners H Series 51...
Page 53: ...Operation Manual Safety Considerations EDUS04 924A 52 Room Air Conditioners H Series...
Page 54: ...EDUS04 924A Operation Manual Safety Considerations Room Air Conditioners H Series 53...
Page 55: ...Operation Manual Safety Considerations EDUS04 924A 54 Room Air Conditioners H Series...
Page 56: ...EDUS04 924A Operation Manual Safety Considerations Room Air Conditioners H Series 55...
Page 57: ...Operation Manual Safety Considerations EDUS04 924A 56 Room Air Conditioners H Series...
Page 58: ...EDUS04 924A Operation Manual Safety Considerations Room Air Conditioners H Series 57...
Page 59: ...Operation Manual Safety Considerations EDUS04 924A 58 Room Air Conditioners H Series...
Page 60: ...EDUS04 924A Operation Manual Safety Considerations Room Air Conditioners H Series 59...
Page 61: ...Operation Manual Safety Considerations EDUS04 924A 60 Room Air Conditioners H Series...
Page 63: ...Operation Manual Safety Considerations EDUS04 924A 62 Room Air Conditioners H Series...
Page 64: ...EDUS04 924A Operation Manual Safety Considerations Room Air Conditioners H Series 63...
Page 65: ...Operation Manual Safety Considerations EDUS04 924A 64 Room Air Conditioners H Series...
Page 66: ...EDUS04 924A Operation Manual Safety Considerations Room Air Conditioners H Series 65...
Page 67: ...Operation Manual Safety Considerations EDUS04 924A 66 Room Air Conditioners H Series...
Page 68: ...EDUS04 924A Operation Manual Safety Considerations Room Air Conditioners H Series 67...
Page 69: ...Operation Manual Safety Considerations EDUS04 924A 68 Room Air Conditioners H Series...
Page 70: ...EDUS04 924A Operation Manual Safety Considerations Room Air Conditioners H Series 69...
Page 71: ...Operation Manual Safety Considerations EDUS04 924A 70 Room Air Conditioners H Series...
Page 72: ...EDUS04 924A Operation Manual Safety Considerations Room Air Conditioners H Series 71...
Page 73: ...Operation Manual Safety Considerations EDUS04 924A 72 Room Air Conditioners H Series...
Page 74: ...EDUS04 924A Operation Manual Safety Considerations Room Air Conditioners H Series 73...
Page 75: ...Operation Manual Safety Considerations EDUS04 924A 74 Room Air Conditioners H Series...
Page 76: ...EDUS04 924A Operation Manual Safety Considerations Room Air Conditioners H Series 75...
Page 77: ...Operation Manual Safety Considerations EDUS04 924A 76 Room Air Conditioners H Series...
Page 78: ...EDUS04 924A Operation Manual Safety Considerations Room Air Conditioners H Series 77...
Page 79: ...Operation Manual Safety Considerations EDUS04 924A 78 Room Air Conditioners H Series...
Page 80: ...EDUS04 924A Operation Manual Safety Considerations Room Air Conditioners H Series 79...
Page 100: ...EDUS04 924A Optional Accessories Room Air Conditioners H Series 99...
Page 101: ...Optional Accessories EDUS04 924A 100 Room Air Conditioners H Series 3P248024 2...