GMES96-U Installation Manual

18
#
3
#1
#2
#4
#5
#
6
#7
#8
#9
#10
#11
100 Degree
Elbow
Coupling
Figure 20
NOTE: Drain components shown for information purposes only.
GENERAL DRAIN INFORMATION
All furnace models come with a factory installed drain trap.
For vertical installations, the trap will remain in the factory
position. All furnace models installed horizontally require the
trap to be relocated. Many drain hoses have a built–in grom-
met which will provide a cabinet seal when installed. See
instructions below for your model and installation position.
NOTE: Both sides of the drain trap must be primed prior
to initial furnace start up
Side Cut-Out
12”
3”
Right side shown.
Acceptable
area for
drain hole.
Figure 21
FIELD SUPPLIED DRAIN
Drain the furnace and air conditioning coil if applicable, in
compliance with code requirements. In horizontal installa-
tions, a field installed rubber coupling will allow the drain
trap to be removed for cleaning. The drain trap must be
primed before initial furnace start up. When an air condi-
tioning coil drain is connected to the field supplied furnace
drain, it must be vented. An open tee must be installed at a
height no higher than the bottom of the furnace collector
box to prevent air conditioning condensate from backing up
into the furnace, if the common drain was blocked.
UPFLOW MODEL INSTALLED VERTICALLY
The trap and factory installed hoses remain as shipped. The
furnace drain may exit either the right or left side of the
furnace cabinet. Both sides of the cabinet have two .875”
diameter holes which can be used interchangeably for drain
and low voltage wiring purposes. If a higher drain exit is
needed, a .875” diameter hole may be added in the area
shown in Figure 21. Any unused cabinet opening must be
sealed. Do not allow drain hose to sag or trap water.
Hose #1
Hose #2
45 º
barb-pipe
adapter
45
barb-pipe
adapter
º
Installer selects right or left side drain
and installs this hose accordingly
Figure 22