GCSS96 Installation Manual

19
NOTE: In vertical installations, air conditioning coil conden-
sate may drain into the furnace trap as long as there is a
trap between the coil and the furnace trap and the drain
pipe is not terminating below the water level of the furnace
trap.
#
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 except for a counterflow when the installer desires
the drain to exit the right side. All furnace models installed
horizontally require the trap to be relocated. Many drain
hoses have a built–in grommet 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 or coun-
terflow installations, a field installed rubber coupling will al-
low the drain trap to be removed for cleaning. The drain trap
must be primed before initial furnace start up. When an air
conditioning coil drain is connected to the field supplied fur-
nace drain, it must be vented. An open tee must be installed
at a height no higher than the bottom of the furnace collec-
tor 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.
DRAIN EXITING RIGHT SIDE
1. Locate and Install the 45º pipe / hose drain coupling
from the outside of the cabinet (barbed end goes in
the cabinet) through hole in the right side of the cabinet
and secure with two field supplied #8 self-tapping
screws (see Figure 22).
2. Locate the long drain hose #3 and cut at line “A” .
3. Install large end of hose #3 to trap outlet and secure
with 1.25" clamp.