Upflow Installation; Downflow Installations; Horizontal Installation - Trane UHMB060ACV3VA Installer's Manual

▲
WARNING
!
SAFETY HAZARD
DO NOT INSTALL THE FURNACE DIRECTLY ON CAR-
PETING, TILE OR OTHER COMBUSTIBLE MATERIAL
OTHER THAN WOOD FLOORING. FOR VERTICAL
DOWNFLOW APPLICATIONS, SUBBASE (BAYBASE205)
MUST BE USED BETWEEN THE FURNACE AND COM-
BUSTIBLE FLOORING. WHEN THE DOWNFLOW
FURNACE IS INSTALLED VERTICALLY WITH A CASED
COIL, A SUBBASE IS NOT REQUIRED. FAILURE TO
FOLLOW THE WARNING EXACTLY COULD RESULT IN
SERIOUS PERSONAL INJURY, PROPERTY DAMAGE
OR DEATH.

UPFLOW INSTALLATION

Standoffs and screws (See Figure 1) 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 furnace
top flanges. The standoff is inserted into the cabinet
alignment hole. The drill screws are inserted through
the standoffs then screwed into the furnace flange. The
coil is always placed downstream of the furnace airflow.
1
STANDOFFS
(BOTH SIDES)
2
1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6
1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6
1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6
3
1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6
1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6
1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6
1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6
1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6
1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6
1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6
FURNACE
1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6
1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 FRONT
1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6
1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6
1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6
1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6
1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6
1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6
1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6
1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6
1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6
FLOOR OPENING PLENUM OPENING
CABINET RETURN
WIDTH DUCT WIDTH
17-1/2" 16-1/4" 16-5/8"
21" 19-3/4" 20-1/8"
24-1/2" 23-1/4" 23-5/8"
18-CD30D1-9
DRILL SCREWS (4)
STANDOFFS (4)
FOR VERTICAL
INSTALLATIONS:
SCREWS
(BOTH SIDES)
A (width)
B (depth)
D
C
TABLE 1
"A" "B" "C"
20-1/8" 15-5/8"
20-1/8" 19-1/8"
20-1/8" 22-5/8"

DOWNFLOW INSTALLATIONS

REQUIRED FLOOR OPENING: (DOWNFLOW)
SEE FIGURE 2 AND FIGURE 3, AND TABLE 1

HORIZONTAL INSTALLATION

IMPORTANT:
The 2/4TXC cased coil must be placed downstream of the
furnace. In horizontal installations, the apex of the coil
may point either toward or away from the furnace. See
the 2/4TXC coil Installer's Guide for more details.
The coil and furnace must be fully supported when used
in the horizontal position. It is always recommended
that an auxiliary drain pan be installed under a horizon-
tally installed evaporator coil or 90% or greater Gas
Furnace. Connect the auxiliary drain line to a separate
drain line (no trap is needed in this line).
Three brackets (with screws) are included with down-
flow furnaces for installation to stabilize and secure the
furnace and TXC cased coil in the horizontal posi-
tion. See Figure 4. The coil is placed downstream of
the furnace, with the apex of the coil pointing in either
direction of the airflow for horizontal installation.
The cased coil is secured to the furnace and both the
furnace and the cased coil must be properly supported.
4
CASED COIL CONNECTION
BRACKET FOR DOWNFLOW
FURNACE IN HORIZONTAL
DOWNFLOW ONLY
The brackets mount using the rear screws on the coil
case and use the screws provided to secure the bracket
to the furnace. The remaining bracket is placed as close
to center as possible (horizontally) between the coil case
front and the furnace bottom channel (for downflow/
horizontal furnace). Use four of the screws provided to
secure the bracket. The coil requires additional support.
The furnace may be installed in an attic or crawl space
in the horizontal position by placing the furnace on the
left side (as viewed from the front in the vertical posi-
tion). The horizontal furnace installation in an attic
should be on a service platform large enough to allow
for proper clearances on all sides and service access to
the front of the furnace (See Figure 5 & Clearance
Tables, on the Outline drawings on pages 4-5). Line con-
tact is only permissible between lines formed by inter-
sections of the top and two sides of the furnace casing
and building joists, studs, or framing.
The furnace may be placed horizontally in a crawl space
on a pad or other noncombustible material which will
"D" raise the unit for sufficient protection from moisture.
19-3/8"
19-3/8"
19-3/8"
Installer's Guide
7