Trane 4TXCB004DS3HCC Assembly instructions

Table of Contents
General .................................................................................1
Application Information ......................................................1
Recommendation ................................................................2
Furnace in Upow Position ................................................2
Furnace in Downow Position ...........................................2
Furnace in Horizontal Right Position ................................3
Furnace in Horizontal Left Position...................................4
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-AD42D1-1A-EN
Cased Aluminum "Convertible" Coil
Model:
4TXCB004DS3HCC
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 sup-
ply 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-AD42D1-1A-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 ther-
mostat 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.
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.
FOR UPFLOW /
HORIZONTAL LEFT
INSTALLATIONS
E. FURNACE IN DOWNFLOW POSITION
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 3. 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 3.
Figure 2
UPFLOW
FURNACE
CASED
COIL
SCREWS
(BOTH SIDES)
STANDOFFS
(BOTH SIDES)
STANDOFFS (4) DRILL SCREWS (4)
Figure 3
Attach Downow
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.

18-AD42D1-1A-EN 3
Installer’s Guide
F. FURNACE IN HORIZONTAL RIGHT POSITION
ssCAUTION
!
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 horizon-
tal right or downow conguration the anges will be bent
downward for a ush t. See Figure 4.
IMPORTANT:
The 4TXC cased coil must be placed downstream of the
furnace. See Figure 5 for proper orientation.
1. When the noncondensing Upflow/Horizontal furnace is
placed on its right side for right airflow, the furnace top
flange meets the cased coil top flange. The coil flange fits
inside of the furnace flange. See Figure 6.
2. 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 5
CASED
COIL
UPFLOW
FURNACE
TOP COIL FLANGE
FITS INSIDE OF
FURNACE
TOP FLANGE FOR
HORIZONTAL RIGHT
APPLICATION
UPFLOW
Figure 4
Figure 6

4 18-AD42D1-1A-EN
Installer’s Guide
G. FURNACE IN HORIZONTAL LEFT POSITION
ssCAUTION
!
Both the coil and furnace must be fully supported. Do not
attempt to suspend the coil using the brackets.
Figure 10
Figure 9
CASED COIL SHOWN INSTALLED HORIZONTAL LEFT WITH A DOWNFLOW
FURNACE AND HORIZONTAL ALIGNMENT BRACKETS
BRACKETS SHIP WITH DOWNFLOW
NON-CONDENSING FURNACES.
REQUIRED FOR ALIGNMENT
ON SOME HORIZONTAL INSTALLATIONS.
AIRFLOW
FURNACE
DUCT
SPLASH
GUARD
CASED COIL
Figure 8
Figure 7
CASED COIL CONNECTION
BRACKET FOR DOWNFLOW
FURNACE IN HORIZONTAL
Standoffs and screws (See Figure 2) are included with the cased
coils for attachment to the furnace. There are clearance alignment
holes near the bottom of the coil wrapper. Drill screws are used
to engage the top flanges of the furnace. The standoff is inserted
into the cabinet alignment hole (See Figure 2). The drill screws are
inserted through the standoffs then screwed into the furnace top
flange. The coil is always placed downstream of the furnace airflow.
The coil and furnace must be fully supported when used in the hori-
zontal position. The standoffs and screws are strictly for securing
alignment, not for support in horizontal.
1. HORIZONTAL LEFT (All coils)
The non-condensing furnaces may be laid on either side
for horizontal application. The condensing downflow/hori-
zontal and upflow/horizontal furnaces may only be rotated
onto their left side. Connection brackets for coil/furnace
alignment are included with the furnaces.
a. In horizontal left, the 4TXC coil case is rotated so
the apex of the coil is away from the furnace and the
auxiliary drain pan is now on the lower side.
b. The two piece baffle ships installed on the coil and is
required for horizontal left applications.
c. The base of the coil enclosure is placed flush against
the downflow/horizontal furnace. Upflow/horizontal
condensing furnaces have the coil match the top
flange.
d. There are three brackets included with the non-
condensing downflow furnace which are used to
connect the furnace and coil together. See Figure 7.
e. Two brackets are used to attach the rear of the coil and
furnace and one bracket is used to attach the front.
The rear brackets will use existing screws on the coil
enclosure (two on each side at the bottom). Each of the
rear brackets will be attached with the wide side of the
bracket resting on the top and bottom of the horizontal
coil and furnace (see Figure 8). Four additional screws
will be used to attach each rear bracket.
f. The front bracket is positioned as close to the center
as possible with the narrow edge against the coil
enclosure and the wide edge against the furnace. Two
screws each are driven into the coil enclosure and
furnace.
g. There is a splash guard packaged with the coil. This
guard is for horizontal left coil installation only. The
guard has a bend which is inserted into the front
channel of the horizontal drain pan on the outlet
air side of the coil case. The guard is then rotated
downward until it rests in the drain pan. One sheet
metal screw is driven through the coil case duct flange
on the front side and into the splash guard side hole.
See Figure 9.
2. Back tab on top baffle will interfere with splashguard. Back
tab should be bent downwards towards coil to eliminate
interference. See Figure 10.
BACK TAB IS BENT
DOWNWARDS
SPLASH
GUARD

18-AD42D1-1A-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.
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.
H. INSTALLING / BRAZING REFRIGERANT LINES
ss
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.
NOTE:
The TXV setting on this unit may run high superheat
(15-25°F) by design when measured at the outdoor unit.
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.
I. 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.
J. 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 11
Capillary tubes will come
out the top of bulb when
positioned correctly.

6 18-AD42D1-1A-EN
Installer’s Guide
Figure 12
Figure 13
K. 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 12.
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 13.

18-AD42D1-1A-EN 7
Installer’s Guide
MODEL 4TXCB004DS3HCC
SHIPPING WEIGHT (LBS.) 58
REFRIGERANT CONTROL HEIGHT "A" (IN.) 22 - 1/2
OVERALL WIDTH "B" (IN.) 17 - 1/2
OPENING WIDTH "C" (IN.) 16 - 5/8
TOP OPENING "D" 15 - 3/4
GAS CONNECTION
LIQUID CONNECTION MATCHED FURNACE WIDTH (NO ADAPTER RQUIRED) 17 - 1/2
DRAIN PA NPLASTIC
TXV (NON-BLEED)
7/8 3/8
Outline Drawing for model: 4TXCB004DS3HCC
From Dwg. D346673 Rev A

8 18-AD42D1-1A-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-AD42D1-1A-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.
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18-AD42D1-1A-EN 03 Nov 2021
Supersedes (New)