Condensate Drain Lines & Drain Trap; General; Upright Installations - Goodman GMV95 Installation Instructions Manual

X. CONDENSATE DRAIN LINES & DRAIN TRAP
G
ENERAL
A condensing gas furnace achieves its high level of efficiency by
extracting almost all of the heat from the products of combustion
and cooling them to the point where condensation takes place. The
condensate which is generated must be piped to an appropriate
drain location.
In upright installations, the furnace's drain hoses may exit either the
right or left side of the furnace. NOTE: If the alternate vent/flue
outlet is utilized in an upright installation, the drain trap and drain
connections must be located on the same side as the alternate
vent/flue outlet.
In horizontal installations, the drain hoses will exit through the bot-
tom (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.
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 I
PRIGHT 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 R L S
TANDARD IGHT OR EFT
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.
GREEN
HOSE CLAMPS
QTY: 3
Hose and Tube Identification
D H C
IDE RAIN OSE ONNECTIONS
HOSE A
QTY: 1
HOSE B
QTY: 1
TUBE 1
QTY: 1
TUBE 2
QTY: 2
RED
HOSE CLAMPS
QTY: 2
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.
Cabinet Width Models
(inches) (kBTU_Tons)
17 1/2 45__30
21 70__40
090__50
24 1/2
115__50
Cabinet Width Models
(inches) (kBTU_Tons)
17 1/2 45__30
21 70__40
090__50
24 1/2
115__50
RED HOSE
FRONT COVER
CLAMP
DRAIN PORT
Upright "Standard" Connections - Right Side
(Upflow Shown, Counterflow Similar)
LEFT
SIDE PANEL
FRONT COVER
DRAIN PORT
RED HOSE
CLAMP
HOSE A
SIDE PANEL
DRAIN
HOLES
TUBE(S) 2
DRAIN
TRAP
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
19
"X" Length to Cut From Long
End of Hose B
7 inches
3 1/2 inches
None
"X" Length to Cut From Long
End of Hose B
18 5/8 inches
14 1/2 inches
11 1/4 inches
RIGHT SIDE
PANEL
RUBBER
ELBOW
RUBBER ELBOW
DRAIN PORT
RED HOSE CLAMP
TUBE 1
HOSE
SIDE PANEL
B
GROMMET
HOLES
TUBE(S) 2
HOSE
DRAIN
GREEN
A
TRAP
HOSE
CLAMPS
(3 PLACES)
RUBBER
ELBOW
RUBBER
ELBOW
DRAIN PORT
RED HOSE
CLAMP
TUBE 1
GREEN HOSE
CLAMPS
(3 PLACES)
HOSE B