EDUS04-906_b
Installation Manual
Room Air Conditioners H-Series
37
Outdoor Unit Installation (3)
Pump Down Operation
7.
Refri
g
erant pipin
g
work.
7-1
Cautions on pipe 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.
7-2
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
.
In order to protect the environment, be sure to pump down when relocatin
g
or disposin
g
of the unit.
1)
Remo
v
e the
v
al
v
e caps from li
qu
id stop
v
al
v
e and gas stop
v
al
v
e.
2) Carry o
u
t forced cooling operation.
3) After 5 to 10 min
u
tes, close the li
qu
id stop
v
al
v
e
w
ith a
hexagonal
w
rench.
4) After 2 to 3 min
u
tes, close the gas stop
v
al
v
e and stop
forced cooling operation.
How to force coolin
g
operation mode
Usin
g
the indoor unit operation/stop button
Press the indoor
u
nit operation/stop
bu
tton for at least 5 seconds. (Operation
w
ill start.)
• Forced cooling operation
w
ill stop a
u
tomatically after aro
u
nd 15 min
u
tes.
To force a test r
u
n to stop, press the indoor
u
nit operation/stop
bu
tton.
3)
Use separate thermal ins
u
lation pipes for gas and li
qu
id refrigerant pipes.
• Be s
u
re to
u
se the R410A tools to ens
u
re press
u
re and to pre
v
ent foreign o
b
jects entering.
6.
Refillin
g
the refri
g
erant.
Check the type of refrigerant to
b
e
u
sed on the machine nameplate.
Precautions when addin
g
R410A
Fill from the li
q
uid pipe in li
q
uid form.
It is a mixed refrigerant, so adding it in gas form may ca
u
se the
refrigerant composition to change, pre
v
enting normal operation.
1)
Before filling, check
w
hether the cylinder has a siphon attached or not.
(It sho
u
ld ha
v
e something like “li
qu
id filling siphon attached” displayed on it.)
After closing the li
qu
id stop
v
al
v
e, close the gas stop
v
al
v
e
w
ithin 3 min
u
tes, then stop the forced operation.
CAUTION
Thickness 0.031inch (0.
8
mm) (C1220T-O)
Minim
u
m
b
end radi
u
s
1-3/16inch (30mm) or more
Thickness 0.393inch (10mm) Min.
O.D. 1/4inch (6.4mm)
I.D. 0.315-0.393inch (
8
-10mm)
O.D. 3/
8
inch (9.5mm)
I.D. 0.472-0.590inch (12-15mm)
Gas side
Li
qu
id side
Gas pipe thermal
ins
u
lation
Li
qu
id pipe
thermal ins
u
lation
Filling a cylinder
w
ith an
attached siphon
Stand the cylinder
u
pright
w
hen filling.
There is a siphon pipe
inside, so the cylinder
need not
b
e
u
pside-
do
w
n to fill
w
ith li
qu
id.
Filling other cylinders
T
u
rn the cylinder
u
pside-do
w
n
w
hen filling.
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
Li
qu
id stop
v
al
v
e
V
al
v
e cap
Hexagonal
w
rench
Close
Gas stop
v
al
v
e
Pipin
g
bundle dia
g
ram
Finishing tape
Li
qu
id pipe ins
u
lation
Inter-
u
nit
w
iring
Gas pipe
ins
u
lation
Gas pipe
Drain hose
Li
qu
id pipe
Seal the edge of the ins
u
lation if
there is a possi
b
ility that the
condensation from the sh
u
t-off
v
al
v
e might drip onto the indoor
u
nit thro
u
gh the gap
b
et
w
een the
ins
u
lation and the pipe.
Summary of Contents for Quaternity H-Series
Page 1: ...EDUS04 906_b H Series Heat Pump...
Page 45: ...Operation Manual EDUS04 906_b 44 Room Air Conditioners H Series Ground terminal...
Page 46: ...EDUS04 906_b Operation Manual Room Air Conditioners H Series 45 DRY button...
Page 47: ...Operation Manual EDUS04 906_b 46 Room Air Conditioners H Series...
Page 48: ...EDUS04 906_b Operation Manual Room Air Conditioners H Series 47...
Page 49: ...Operation Manual EDUS04 906_b 48 Room Air Conditioners H Series...
Page 51: ...Operation Manual EDUS04 906_b 50 Room Air Conditioners H Series...
Page 52: ...EDUS04 906_b Operation Manual Room Air Conditioners H Series 51...
Page 53: ...Operation Manual EDUS04 906_b 52 Room Air Conditioners H Series...
Page 56: ...EDUS04 906_b Operation Manual Room Air Conditioners H Series 55...
Page 57: ...Operation Manual EDUS04 906_b 56 Room Air Conditioners H Series 1 8 F 1 C 3 6 F 2 C...
Page 58: ...EDUS04 906_b Operation Manual Room Air Conditioners H Series 57...
Page 59: ...Operation Manual EDUS04 906_b 58 Room Air Conditioners H Series COOLING or DRY COOLING mode or...
Page 60: ...EDUS04 906_b Operation Manual Room Air Conditioners H Series 59...
Page 61: ...Operation Manual EDUS04 906_b 60 Room Air Conditioners H Series...
Page 62: ...EDUS04 906_b Operation Manual Room Air Conditioners H Series 61...
Page 63: ...Operation Manual EDUS04 906_b 62 Room Air Conditioners H Series...
Page 64: ...EDUS04 906_b Operation Manual Room Air Conditioners H Series 63...
Page 65: ...Operation Manual EDUS04 906_b 64 Room Air Conditioners H Series...
Page 66: ...EDUS04 906_b Operation Manual Room Air Conditioners H Series 65...
Page 67: ...Operation Manual EDUS04 906_b 66 Room Air Conditioners H Series...
Page 68: ...EDUS04 906_b Operation Manual Room Air Conditioners H Series 67...
Page 69: ...Operation Manual EDUS04 906_b 68 Room Air Conditioners H Series...
Page 70: ...EDUS04 906_b Operation Manual Room Air Conditioners H Series 69...
Page 71: ...Operation Manual EDUS04 906_b 70 Room Air Conditioners H Series 3P226009 1...
