19
Follow the bullets listed below when installing the drain system.
Refer to the following sections for specific details concerning fur-
nace drain trap installation and drain hose hook ups.
•
The drain trap supplied with the furnace must be used.
•
The drain line between furnace and drain location must
be constructed of 3/4” PVC or CPVC.
•
The drain line between furnace and drain location must
maintain a 1/4 inch per foot downward slope toward the
drain.
•
Do not trap the drain line in any other location than at
the drain trap supplied with the furnace.
•
Do not route the drain line outside where it may freeze.
•
If the drain line is routed through an area which may see
temperatures near or below freezing, precautions must
be taken to prevent condensate from freezing within the
drain line.
•
If an air conditioning coil is installed with the furnace, a
common drain may be used. An open tee must be
installed in the drain line, near the cooling coil, to relieve
positive air pressure from the coil’s plenum. This is
necessary to prohibit any interference with the function
of the furnace’s drain trap.
U
PRIGHT
I
NSTALLATIONS
In an upright installation drain hoses are connected to drain ports
on the rubber elbow and the recuperator coil front cover. The drain
lines are then routed through the right or left side panel and into the
drain trap secured to the outside of the cabinet.
NOTE:
Refer to
Section X, Condensate Drain Lines and Drain Trap
- Alternate Vent/Flue Hose Connections
for upright installations us-
ing an alternate vent/flue outlet.
S
TANDARD
R
IGHT
OR
L
EFT
S
IDE
D
RAIN
H
OSE
C
ONNECTIONS
Upright installations using the
standard
vent/flue outlet require drain
hoses to be connected as follows. The following quantity of hoses,
tubes, and hose clamps are provided with the unit.
HOSE A
QTY: 1
HOSE B
QTY: 1
TUBE 1
QTY: 1
RED
TUBE 2
QTY: 2
HOSE CLAMPS
QTY: 2
GREEN
HOSE CLAMPS
QTY: 3
Hose and Tube Identification
1.
Remove the rubber plug from the front cover drain port (right
or left side, depending on the intended drain trap mounting).
2.
Secure Hose A to front cover drain port with a red hose clamp.
Route hose to rear side panel grommet hole.
NOTE: For left side drainage, grommets will have to be relocated
to left side panel.
DRAIN
TRAP
FRONT COVER
DRAIN PORT
TUBE(S) 2
GREEN
HOSE
CLAMPS
(3 PLACES)
RIGHT SIDE
PANEL
RUBBER ELBOW
DRAIN PORT
TUBE 1
SIDE PANEL
GROMMET
HOLES
HOSE
B
HOSE
A
RUBBER
ELBOW
RED HOSE
CLAMP
RED HOSE CLAMP
Upright “Standard” Connections - Right Side
(Upflow Shown, Counterflow Similar)
LEFT
SIDE PANEL
FRONT COVER
DRAIN PORT
HOSE A
SIDE PANEL
DRAIN
HOLES
TUBE(S) 2
DRAIN
TRAP
GREEN HOSE
CLAMPS
(3 PLACES)
TUBE 1
RUBBER
ELBOW
HOSE B
RUBBER
ELBOW
DRAIN PORT
RED HOSE
CLAMP
RED HOSE
CLAMP
Upright “Standard” Connections - Left Side
(Upflow Shown, Counterflow Similar)
3.
Cut and remove 1/4 inch from the end of the drain port on
the rubber elbow.
4.
Insert Tube 1 into rubber elbow drain port and secure with
red hose clamp. Angle tube outward toward front of furnace.
5.
Right
side drains
Cut 17 3/4 inches from the long end of Hose B and discard.
Secure the remaining hose to Tube 1 with a green hose
clamp. Route the other end of Hose B to front right side
panel grommet hole.
Left
side drains
Cut “X” inches from the long end of Hose B and discard.
Refer to table for appropriate length to cut. Secure remaining
hose to Tube 1 with a green hose clamp. Route other end of
Hose B to front left side panel grommet hole.
Cabinet Width
(inches)
Models
(kBTU_Tons)
"X" Length to Cut From Long
End of Hose B
17 1/2
45__30
7 inches
21
70__40
3 1/2 inches
090__50
115__50
24 1/2
None
6.
Insert short end of each Tube 2 through side panel grommet
holes. Secure tubes to Hose A and Hose B with green hose
clamps. 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
Section
X, Condensate Drain Lines and Drain Trap - Upright Drain Trap
Mounting.
