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.
H. MAXIMUM AIRFLOW
SETTING, CFM
NOTE:
Water blow-off could occur In certain Installation posi-
tions if the airflow setting exceeds the maximum values
listed.
Maximum
airflow
setting, CFM
Coil
Upflow
Horizontal Left
4TXCA002DS3HCB
900
800
4TXCA032DS3HCB
1350
1125
4TXCB003DS3HCB
1125
1000
4TXCB004DS3HCB
1350
1200
4TXCC005DS3HCB
1350
1200
4TXC8006DS3HCB
1800
1600
4TXCC007DS3HCB
1800
1600
4TXCD008DS3HCB
1800
1600
4TXCC009DS3HCB
2250
2000
4TXCD01
ODS3HCB
2250
2000
Coil
Downflow
Horizontal Right
4TXCA002DS3HCB
750
900
4TXCA032DS3HCB
1200
1350
4TXCB003DS3HCB
925
1125
4TXCB004DS3HCB
1100
1350
4TXCC005DS3HCB
1100
1350
4TXCB006DS3HCB
1475
1800
4TXCC007DS3HCB
1475
1800
4TXCD008DS3HCB
1475
1800
4TXCC009DS3HCB
1850
2250
4TXCD01
ODS3HCB
1850
2250
NOTE:
The TXV
setting
on this unit may
run
high
superheat
(15-25°F} by design when measured
at the
outdoor
unit.
18-AD39D1
-1
A-EN
Installer's Guide
I. INSTALLING/BRAZING REFRIGERANT LINES
A
CAUTION
Do
1!KJI
open refrigerant valve at the outdoor unit until the
refrigerant lines and coil have been brazed, evacuated, and
leak checked. This would cause contamination of
the
refriger-
ant or possible discharge of
refrigerant to the
atmosphere.
1.
The following
·
steps are to be considered when
installing
the
refrigerant lines:
a.
Determine the most practical way to run
the
lines.
b. Consider types of bends
to
be
made
and space
limitations.
c. Route
the tubing making
all
required bends
and
properly secure
the
tubing
before making
final
connections.
NOTE: Refrigerant lines
must be isolated
from the structure and
the holes must be sealed
weather
tight after
installation.
IMPORTANT:
Do not
unseal
refrigerant tubing until ready to fit refriger-
ant lines.
There is only
a holding charge of
dry
air
in
the indoor coil,
therefore
no
loss
of operating
refrigerant charge occurs
when the
sealing
plugs are
removed.
NOTE:
TXV bulb MUST be protected
(wrapped
with wet rag)
or
removed, while
brazing the tubing. Overheating
of the
sensing bulb will affect the functional characteristics and
performance of the
comfort
coil.
1.
Remove both
rubber plugs
from the
indoor
coil.
2.
Field supplied
tubing
should be cut square, round
and free
of burrs
at
the
connecting
end. Clean the tubing to
prevent
contaminants
from
entering the system.
3.
Run the
refrigerant tubing
into
the
stub
tube
sockets
of the
indoor
unit
coil.
PAINTED
AREAS
OF
THE UNIT MUST
BE SHIELDED
DURING BRAZING.
4.
Flow a
small amount
of nitrogen through the tubing
while
brazing.
5.
·
Use good brazing technique to make leakproof
joints.
6.
Minimize the use
of sharp
90 degree
bends.
7.
Insulate
the
suction
line and its
fittings.
8.
Do
NOT
allow
un-insulated
lines
to come into
contact with
each
other.
5
.
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