32
Rev. 0
CONDENSATE DRAIN LINES
AND DRAIN TRAP
2.
Upflow furnaces
Relocate the front cover pressure switch hose connec-
tion from the right side (as shipped) pressure tap to the
left (down) side tap. The pressure switch hose must be
connected to the down side to guard against blocked
drain conditions. Cut hose to appropriate length to mini-
mize sagging. Plug right (unused) pressure tap with plug
removed from left side.
3. Secure Hose A to front cover drain port with a hose
clamp. Route hose to rear left down side panel grom-
met holes. Note: For left side drainage, grommets must
be relocated to left side panel.
HOSE A
HOSE B
GROMMETED
SIDE PANEL
HOLES
HOSE
CLAMPS
(5 PLACES)
TUBE 1
RUBBER
ELBOW
RIGHT
SIDE
PANEL
DRAIN TRAP
TUBE(S) 2
RUBBER ELBOW
DRAIN PORT
FRONT COVER
DRAIN PORT
Horizontal Connections
Left Side Down
(Upflow Shown, Counterflow Similar)
4. Cut “X” inches from the long end of Hose B and discard.
Refer to table below for appropriate length to cut.
070__30
"X" Length to Cut From
Long End of Hose B
19 1/8 inches
20 1/2
070__40
090__40
14 3/4 inches
Cabinet Width
(inches)
Model
GUCA & GCCA
(kBTU Tons)
16 1/2
045__30
24 1/2
090__50
115__50
11 1/4 inches
5. Secure short end of Hose B to induced draft blower
drain port using a hose clamp. Route hose to front left
(down) side panel grommet holes.
6. For units with a 16 1/2” cabinet width, cut 5 1/2 inches
straight length from the long end of one Tube 2.
For units with a 20 1/2” and 24 1/2” cabinet width, cut 5
1/2 inches straight length from the long end of each
Tube 2.
7.
Units with a 16 1/2” cabinet width.
Insert approximately one inch of cut Tube 2 through left
side panel grommet hole and secure to Hose A with a
hose clamp. Insert uncut Tube 2 through remaining
grommet hole and secure to Hose B. Note: Tube must
reach bottom of trap.
Units with a 20 1/2” and 24 1/2” cabinet width.
Insert approximately one inch of each Tube 2 through
left side panel grommet hole. Secure tubes to Hose A
and Hose B with hose clamps. Note: Tube must reach
bottom of trap.
Note: Ensure hoses and tubes maintain a downward slope
for proper drainage and that they are not kinked or binding.
For details concerning mounting of the drain trap, refer to
,
Condensate Drain Lines and Drain Trap - Upright Drain
Trap Mounting section.
Horizontal Drain Trap Mounting (Left or Right Side
Panel)
1. Position the drain trap against side panel with drain tubes
inserted into trap. Note that the trap may be orientated
with the outlet facing either the furnace’s top cover or
base pan.
2. Secure drain trap to side panel at the dimples or
crosshairs located on either side of the grommet drain
holes.
3. Confirm that tubes reach bottom of drain trap and that
all hoses maintain a downward slope and are not kinked
or binding.
4. Attach PVC drain line to drain trap outlet with either a
90° elbow or coupling.
