Goodman GMVM Service Instructions Manual page 36

OPERATION
Horizontal installations with the left side panel down will require
drain hoses to be connected to the left side front cover drain port
and the side drain port on the rubber elbow.
1. Remove the rubber plug/cap from the front cover left
(down) side drain port.
2. Relocate the front cover pressure switch hose connec-
tion from the right side (as shipped) pressure tap to the
left (down) side tap. The pressure switch hose must be
connected to the down side to guard against blocked
drain conditions. Cut hose to appropriate length to mini-
mize sagging. Plug right (unused) pressure tap with plug
removed from left side.
3. Secure Hose A to front cover drain port with a red hose
clamp. Route hose to rear left (down) side panel grom-
met holes. NOTE: For left side drainage, grommets
must be relocated to left side panel.
4. Remove the rubber cap from the side drain port on the
rubber elbow.
5. Secure the short end of Hose B to rubber elbow side
drain port using a green hose clamp. NOTE: For left
side drainage, route hose to far left (down) side panel
grommet holes. NOTE: Horizontal left side connections
(when using new side port drain elbow) does not require
connecting a hose to the induced draft blower housing.
6. Cut 5 1/2 inches straight length from the long end of
each Tube 2 and discard radius ends.
LEFT SIDE
PANEL
36
FRONT
COVER
PRESSURE
TAP
FRONT COVER
DRAIN PORT
RED HOSE CLAMP
SIDE PANEL
GROMMET
Horizontal Connections - Left Side Down
(Upflow Shown, Counterflow Similar)
7. Insert approximately one inch of each Tube 2 through left
side panel grommet hole. Secure tubes to Hose A and
Hose B with a green hose clamps. NOTE: Tube must
reach bottom of trap. 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 Con-
densate Drain Lines and Drain Trap - Horizontal Drain Trap Mount-
ing.
H D T M
ORIZONTAL RAIN RAP
P )
ANEL
1. Position the drain trap against side panel with drain tubes
inserted into trap. Note that the trap may be orientated
with the outlet facing either the furnace's top cover or
base pan.
2. Secure drain trap to side panel at the dimples or
crosshairs located on either side of the grommet drain
holes.
3. Confirm that tubes reach bottom of drain trap and that all
hoses maintain a downward slope and are not kinked or
binding.
4. Attach PVC drain line to drain trap outlet with either a
90° elbow or coupling.
GREEN HOSE
CLAMP
4-3/4" minimum
HOLES
(L R S
OUNTING EFT OR IGHT
HOSE B
HOSE A
GREEN HOSE
CLAMP
TUBE(S) 2
DRAIN TRAP
Allow
for trap
IDE