Recommendation; Furnace In Upflow Position; Furnace In Downflow Position - Trane 5TXCA001AS3HCA Installer's Manual

Installer's Guide
E. 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.
F. 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 but recommended: Remove the factory
installed two-piece baffle assembly from the top of
the coil by removing the 5/16" hex head screws. See
Figure 3. Replace only the top baffle using the same
screws previously provided.
c. Optional but recommended: On 5TXCA009AS and
5TXCD010AS only, remove the (2) outer water diverter
baffles by removing the 5/16" hex head screws. See
Figure 10.
d. 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 using factory
provided standoffs and screws. See Figure 4.
Seal for air leaks as required.
d. Ensure the sensor is secured to the primary drain pan
as shown in Figure 2.
Figure 2
6
:
Refrigerant Sensor
should be seated
fully on pan
Dimension from the bottom of
the Drain Pan to the bottom of
the Sensor should be 0.8" max
G. FURNACE IN DOWNFLOW POSITION:
!
CAUTION
To prevent damage to pan, ensure Heat Shield is
assembled to Horizontal Drain Pan. See Figure 9.
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 but recommended: Remove the factory
installed two-piece baffle assembly from the top of
the coil by removing the 5/16" hex head screws. See
Figure 3. Replace only the top baffle using the same
screws previously provided.
c. Optional for maximum efficiency: Remove the
horizontal drain pan from the coil and discard.
d. Ensure the sensor is secured to the primary drain pan
as shown in Figure 2.
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 5. 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 5.
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.
Remove
and
Discard
Figure 3
Replace
18-AD47D1-1B-EN