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Alternate Upright Upflow Connections—Right Side Only
(Counterflow Similar)
A
D
A. Front cover drain port
B. Rubber elbow (externally mounted)
C. Rubber elbow drain port
D. Silver hose clamp
E. Tube 1
F. Green hose clamps (3)
Upright Installations—Trap on Left Side
NOTE: For left side trap installation, grommets must be moved to
the left side of the furnace and the plugs installed on the right
side of the furnace.
1. Remove the rubber plug/cap from the left side of the front
cover drain port.
2. Secure Hose A to the front cover drain port with a red hose
clamp.
3. Route Hose A to the rear side panel grommet hole.
4. Cut and remove ¹⁄₄" (6.4 cm) from the end of the drain port on
the rubber elbow.
5. Insert Tube 1 into the rubber elbow drain port and secure with
the silver hose clamp. Angle Tube 1 outward toward the front
of the furnace.
6. Cut "x" from the long end of Hose B and discard. Refer to the
following table for the appropriate length to cut.
7. Secure the remaining Hose B to Tube 1 with a green hose
clamp.
8. Route the other end of Hose B to the front left side panel
grommet hole.
NOTE: Long Hose B must always be connected to Tube 1 and
the elbow and not on the front cover.
9. Insert the short end of each Tube 2 through the side panel
grommet holes.
10. Secure the tubes to Hose A and Hose B with the green hose
clamps.
NOTE: Ensure hoses and tubes maintain a downward slope
for proper drainage and that they are not kinked or binding.
B
C
D
E
F
G
H
K
J
I
G. Hose B
H. Side panel grommet holes
I. Drain trap
J. Tubes 2
K. Hose A
L. Red hose clamp
Upright Standard Connections—Left Side Upflow
(Counterflow Similar)
A
M
L
K
J
I
H
F
A. Left side panel
E. Tube 1
B. Rubber elbow
F. Green hose clamps (3)
C. Rubber elbow
G. Hose B
drain port
H. Drain trap
D. Silver hose clamp
Models
Cabinet Width
(kBtu/Tons)
17¹⁄₂" (44.5 cm)
45_30
21" (53.4 cm)
70_40
24¹⁄₂" (62.3 cm)
090_50
115_50
Upright Drain Trap Mounting—Left or Right Side
1. Insert the drain tubes into the drain trap and position the
drain trap against the side panel.
NOTE: Drain tubes must reach the bottom of the drain trap.
2. Secure the drain trap to the side panel at the mounting holes
(dimples or crosshairs on counterflow models) located below
the grommet drain holes.
3. Attach the PVC drain line to the drain trap outlet with either a
90° elbow or coupling.
Horizontal Installations—Right Side Down
Horizontal installations with the right side down require that the
drain hoses be connected to the right side front cover drain port
and the rubber elbow drain port.
NOTE: On counterflow models, relocation of the front cover
pressure switch hose is required.
Make connections as follows:
1. Remove the rubber plug/cap from the right side of the front
cover drain port.
NOTE: On counterflow furnaces, relocate the front cover
pressure switch hose connection from the left side pressure
tap to the right (down) side tap to guard against blocked drain
conditions. Cut the hose to appropriate length to minimize
sagging. Plug the left (unused) pressure tap with the plug
removed from right side.
B
C
D
E
F
G
I. Tubes 2
J. Side panel drain holes
K. Hose A
L. Red hose clamp
M. Front cover drain port
"x" Length to Cut from
Long End of Hose B
7" (17.8 cm)
3¹⁄₂" (8.89 cm)
None
Panel
21
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