Instruction manual

20
In horizontal installations, the drain hoses will exit through
the bottom (down side) of the unit with the drain trap
suspended beneath the furnace. The field-supplied drain
system must be in accordance with all local codes and the
instructions in the following sections.
WARNING
In upright upflow installations, the drain
trap must be mounted on the opposite side
of the unit from the junction box. This will
reduce the risk of water reaching the
junction box in the event of a blocked drain
condition. Failure to follow these
instructions can result in possible death,
personal injury, or property damage due to
electrical shock.
Follow the bullets listed below when installing the drain
system. Refer to the following sections for specific details
concerning furnace 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.
UPRIGHT INSTALLATIONS
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 using an alternate vent/flue outlet.
Standard Right or Left Side Drain Hose Connections
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 CLAM
P
Upright “Standard” Connections
Right Side
(Upflow Shown, Counterflow Similar)