Trane 4TXCB004DS3HCC Assembly instructions

Table of Contents
General .................................................................................1
Application Information ......................................................1
Recommendation ................................................................2
Furnace in Upflow Position ................................................2
Furnace in Downflow Position ...........................................2
Furnace in Horizontal Right Position.................................3
Furnace in Horizontal Left Position ...................................4
Maximum Airflow Setting (CFM) ........................................5
Installing / Brazing Refrigerant Lines ................................5
Leak Check ..........................................................................5
Condensate Drain Piping....................................................5
Cleaning the Coil .................................................................6
Outline Drawing ...................................................................7
Troubleshooting Indoor TXV / Cooling Mode....................8
Installer’s Guide
ALL phases of this installation must comply with NATIONAL, STATE AND LOCAL CODES
IMPORTANT — This Document is customer property and is to remain with this unit. Please return to service information pack
upon completion of work.
IMPORTANT: Review your installation requirements. Check
the table on the outline drawing and note all dimensions for
your coil before beginning the installation.
Figure 1
18-AD42D1-1B-EN
Cased Aluminum "Convertible" Coil
Model:
4TXCB004DS3HCC
4TXCD010DS3HCC
NOTE:
OPTIONAL DOWNFLOW GASKET INSTALLATION: For
unusually humid applications that expect prolonged
operation above 70% RH, it is recommended to use the
BAYGSKT001A0 gasket kit to prevent water from forming
on the bottom of the drain pan and dripping into the
supply ductwork.
WARNING
!
This product can expose you to chemicals including
lead, which are known to the State of California to case
cancer and birth defects or other reproductive harm.
For more information go to www. P65Warnings.ca.gov
A. GENERAL
This coil is designed for use in combination with a heat pump or
cooling outdoor section using R-410A REFRIGERANT.
The 4TXC equipment has been evaluated in accordance with
the Code of Federal Regulations, Chapter XX, Part 3280 or
the equivalent. “Suitable for Mobile Home use” The height of
the Furnace, Coil and discharge duct work must be 7 ft. or less.
Inspect the coil for shipping damage. Notify the transportation
company immediately if the coil is damaged.
B. APPLICATION INFORMATION
1. FURNACE AND COIL
The coil MUST BE installed downstream (in the outlet air)
of the furnace.
2. INDOOR UNIT AIRFLOW
Indoor unit must provide the required airflow for the heat
pump or cooling combinations approved for this coil.
WARNING (Medium/high pressure)
Contains Refrigerant!
System contains oil and refrigerant under high pressure.
Recover refrigerant to relieve pressure before opening the
system. See unit nameplate for refrigerant type. Do not
use non-approved refrigerants, refrigerant substitutes, or
refrigerant additives.
Failure to follow proper procedures or the use of non-
approved refrigerants, substitutes,or refrigerant additives
could result in death,serious injury, or equipment damage.
WARNING
!

2 18-AD42D1-1B-EN
Installer’s Guide
C. RECOMMENDATION
If a coil is part of the total system installation, use the Installer’s
Guide packaged with the furnaces, outdoor sections, and
thermostat for physically installing those components.
CAUTION
!
This coil is pressurized with 8-12 psig of dry air. Do not
stand directly in front of the coil connections when
removing sealing plugs. If no pressure is released, check
for leaks.
D. FURNACE IN UPFLOW POSITION
1. UPFLOW COIL CONVERSION
While not required, optional removal of some coil
components will maximize airflow efficiency.
a. Remove the coil by sliding the coil out of the coil
enclosure.
b. Optional for maximum efficiency: Remove the
horizontal
drain pan from the coil and discard.
c. If present, remove the (2) outer water diverter baffles.
See Figure 2.
2. UPFLOW GAS FURNACE
a. Apply gasket material (duct seal field supplied) to ALL
mating surfaces between the furnace and the coil case.
b. Set the coil case on top of the furnace. Connect the
ductwork to the coil case using field supplied screws.
c. Secure the coil case to the furnace and seal for air
leaks as required.
E. FURNACE IN DOWNFLOW POSITION
CAUTION
!
To prevent damage to pan, ensure Heat Shield is assembled
to Horizontal Drain Pan. See Figure 8.
1. DOWNFLOW COIL CONVERSION
While not required, optional removal of some coil
components will maximize airflow efficiency.
a. Remove the coil by sliding the coil out of the coil
enclosure.
b. Optional for maximum efficiency: Remove the horizontal
drain pan from the coil and discard.
2. DOWNFLOW GASKET INSTALLATION (OPTIONAL)
For unusually humid applications that expect prolonged
operation above 70% RH, it is recommended to use the
BAYGSKT001A0 gasket kit to prevent water from forming
on the bottom of the drain pan and dripping into the
supply ductwork.
a. Lay the coil on its back side.
b. Locate the 4" wide gasket material found in
BAYGSKT001A0.
c. Attach the 4" gasket material to three sides of the
bottom of the drain pan as shown in Figure 4. Make
sure to start by matching up the edge of the gasket
material to the inner edge of the drain pan by the coil
fins and working outwards.
d. The gasket material can be cut or ripped easily so that
it can be tailored to fit. The gasket material must cover
the three sides along the entire length of the coil as
shown in Figure 4.
FOR UPFLOW /
HORIZONTAL LEFT
INSTALLATIONS
Figure 3
UPFLOW
FURNACE
CASED
COIL
SCREWS
(BOTH SIDES)
STANDOFFS
(BOTH SIDES)
STANDOFFS (4) DRILL SCREWS (4)
Figure 4
Attach Downflow
Bottom Gasket
Start
here
3. DOWNFLOW GAS FURNACE
When a coil is used with a downflow furnace, a subbase
is not required between the coil case and combustible
flooring.
a. Place the coil case on the furnace supply air plenum.
b. Secure the coil case to the plenum.
c. Set the furnace on top of the coil case, making sure
that the back side of the discharge opening is snug up
against the duct flange at the top rear of the coil case.
d. Secure the coil case to the furnace and seal for air
leaks as required.
Figure 2
WATER DIVERTER (X2)

18-AD42D1-1B-EN 3
Installer’s Guide
F. FURNACE IN HORIZONTAL RIGHT POSITION
CAUTION
!
Both the coil and furnace must be fully supported. Do not
attempt to suspend the coil using the brackets.
Note: When installing onto an S-Series furnaces in horizontal
right or downow conguration the anges will be bent
downward for a ush t. See Figure 5.
CAUTION
!
To prevent damage to pan, ensure Heat Shield is assembled
to Horizontal Drain Pan. See Figure 8.
IMPORTANT:
The 4TXC cased coil must be placed downstream of the
furnace. See Figure 6 for proper orientation.
1. HORIZONTAL RIGHT COIL CONVERSION:
While not required, optional removal of some coil
components will maximize airflow efficiency.
a. Remove the coil by sliding the coil out of the coil
enclosure.
b. When present, remove the (2) outer water diverter
baffles. See Figure 2.
2. Attach the coil and furnace in the orientation shown
in Figure 6. For S-Series furnaces, bend flanges to
accommodate installation as shown in Figure 5. For
legacy upflow or horizontal furnaces, attach as shown in
Figure 7.
3. There are self drilling screws included which can be used
for this connection. Seal all gaps between the furnace and
coil.
UPFLOW FURNACE IN
HORIZONTAL RIGHT AIRFLOW POSITION
Airflow
CASED COIL
Figure 6
Figure 5
NOTE: For S-Series furnaces, bend outlet flanges inward
or outward to suit installation. Coil and furnace will nest
together.
Ensure Heat Shield is secure
on end of Horizontal Drain Pan
Figure 8
CASED
COIL
UPFLOW
FURNACE
TOP COIL FLANGE
FITS INSIDE OF
FURNACE
TOP FLANGE FOR
HORIZONTAL RIGHT
APPLICATION
UPFLOW
Figure 7
NOTE: For legacy upflow
or horizontal furnaces in
horizontal right.

4 18-AD42D1-1B-EN
Installer’s Guide
G. FURNACE IN HORIZONTAL LEFT POSITION
CAUTION
!
Both the coil and furnace must be fully supported. Screws and
standoffs are provided for alignment only.
Figure 11
AIRFLOW
FURNACE
DUCT
SPLASH
GUARD
CASED COIL
APEX OF COIL POINTS
AWAY FROM FURNACE
Figure 10
1. HORIZONTAL LEFT COIL CONVERSION.
While not required, optimal removal of some coil
components will maximize airflow efficiency.
a. Remove the coil by sliding the coil out of the coil
enclosure.
b. If present, remove the (2) outer water diverter baffles.
See Figure 2.
2. Splash Guard installation is required to prevent water
blowoff.
a. Place Channel for Splash Guard into Horizontal Drain
Pan as shown in Figure 9.
b. Slide the new Horizontal Drain Pan onto the coil and
slide back into the coil cabinet.
c. Bend rear tab on top baffle inward towards the coil to
avoid interference with splash guard. See Figure 12.
d. Wedge flange of Splash Guard between Channel for
Splash Guard and Horizontal Drain Pan as shown in
Figure 11.
e. Drive one field-supplied sheet metal screw into Splash
Guard through factory-provided clearance hole in the
front duct flange on the coil case. Refer to Figure 11.
3. Attach the coil and furnace in the orientation shown
in Figure 10. For S-Series furnaces, bend flanges to
accommodate installation as shown in Figure 5.
4. Insert standoffs into clearance holes in coil cabinet and
use self-drilling screws to align coil and furnace. See
Figure 3. Seal all gaps between the furnace and coil.
NOTE:
Screws and standoffs are for alignment only. Equipment
must be fully supported when installed in horizontal.
Figure 12
BACK TAB IS BENT
DOWNWARDS
SPLASH
GUARD
Figure 9
CHANNEL
HORIZONTAL DRAIN PAN

18-AD42D1-1B-EN 5
Installer’s Guide
IMPORTANT:
Do not unseal refrigerant tubing until ready to t 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.
H. MAXIMUM AIRFLOW SETTING (CFM)
NOTE:
Water blow-off could occur in certain installation
positions if the airow setting exceeds the maximum
values listed.
Maximum airflow settings (CFM)
Coil Upflow Downflow Horizontal
Left
Horizontal
Right
4TXCB004DS3HCC 1350 1100 1200 1350
4TXCD010DSCHCC 2250 1850 2000 2250
NOTE:
The TXV setting on this unit may run high superheat
(15-25°F) by design when measured at the outdoor unit.
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.
When replacing the TXV bulb, reinstall the bulb in the
proper orientation.
9. Wrap the TXV with insulation after the spring clip has been
installed.
J. LEAK CHECK
1. Using a manifold gauge, connect an external supply of dry
nitrogen to the gauge port on the liquid line.
2. Pressurize the connecting lines and indoor coil to 150 PSIG
maximum.
3. Leak check brazed line connections using soap bubbles.
Repair leaks (if any) after relieving pressure.
4. Evacuate and charge the system per the instructions pack-
aged with the outdoor unit.
K. CONDENSATE DRAIN PIPING
Condensate drain connections are located in the drain pan at
the bottom of the coil/enclosure assembly. The female threaded
fitting protrudes outside of the enclosure for external connection.
A field fabricated trap is not required for proper drainage due to
the positive pressure of the furnace; however, it is recommended
to prevent efficiency loss of conditioned air.
1. The drain hole in the drain pan must be cleared of all
insulation.
2. Insulate the primary drain line to prevent sweating where
dew point temperatures may be met. (Optional depending
on climate and application needs)
3. Connect the secondary drain line to a separate drain line
(no trap is needed in this line).
Figure 13
Capillary tubes will come
out the top of bulb when
positioned correctly.
I. INSTALLING/BRAZING REFRIGERANT LINES
CAUTION
!
Do NOT 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.

6 18-AD42D1-1B-EN
Installer’s Guide
Figure 14
Figure 15
L. CLEANING THE COIL
The two piece door allows removal of the outer casing doors
without interference from refrigerant or condensate lines. Once
the outer doors are removed the inner coil panels can be easily
removed.The inside and outside of the coil can be easily cleaned
with a brush and vacuum with the panels removed.See Figure 14.
The foil covered insulation should be wiped down and residual
dirt and dust should be vacuumed up to maintain good air qual-
ity. See Figure 15.

18-AD42D1-1B-EN 7
Installer’s Guide
Outline Drawing for model: 4TXCB004DS3HCC, 4TXCD010DS3HCC
From Dwg. D346710 Rev. A

8 18-AD42D1-1B-EN
Installer’s Guide
Is sub cooling at the
outdoor unit between
8 to 12F?
Troubleshooting Indoor TXV / Cooling Mode
NO
YES Is superheat
< 5F? YES
Correct air
flow
problem
Is air flow at least
350 CFM per ton?
YES
NO
Remove sensing bulb from the
suction line. Measure superheat
at indoor coil while holding the
bulb in bare hand for one minute.
Does superheat decrease?
Measure superheat at indoor coil
while placing the bulb in an ice
and water bath for one minute.
Does superheat increase?
YES
Replace the
TXV
TXV is OK
NO
Is superheat
< 25F? YES
NO
Is indoor
temperature more
than 85F?
NO
Is sub cooling less
than 8F?
YES
Confirm that charge
is correct and look
for dirty or restricted
outdoor coil.
Confirm that
charge is
correct.
NO
Before starting, insure the
blower wheel, indoor and outdoor
coils are clean.
Is the liquid line
temperature at indoor
coil within 8F of outdoor
liquid line temperature?
YES
Verify line set is
sized properly
for application
NO
The system is running at max
capacity and this may be
causing the High superheat.
Wait until indoor temperature
is less than 80F and check
superheat again.
YES
YES
Verify Inlet screen
of inlet tube
assembly is clear
of debris
NO
Verify Inlet screen
of inlet tube
assembly is clear
of debris
NO

18-AD42D1-1B-EN 9
Installer’s Guide

About Trane and American Standard Heating and Air Conditioning
Trane and American Standard create comfortable, energy efficient indoor environments for residential applications.
For more information, please visit www.trane.com or www.americanstandardair.com
The manufacturer has a policy of continuous data improvement and it reserves the right to change design and specifications without notice. We are
committed to using environmentally conscious print practices.
© 2022
18-AD42D1-1B-EN 26 Aug 2022
Supersedes 18-AD42D1-1A-EN (November 2021)