DOWNFLOW INSTALLATIONS
1. Position the unit to minimize long runs of duct or runs
of duct with many turns and elbows.
2. If summer air conditioning is desired, position the in-
door coil on the supply-air side of the unit. Ensure that
no air can bypass this coil.
3. If installing on a combustible floor
and not using an
air conditioning plenum,
install the special non-
combustible floor base. See Table 1 and Figure 11.
4. Connect the furnace to the supply air plenum.
5. Connect the return air ducting to the return air open-
ing at the top of the unit. Make the connection air tight
to prevent the migration of toxic fumes and odors in-
cluding carbon monoxide from migrating into the living
space from an adjacent fuel-burning appliance.
NOTE:
In downflow configuration, side return air cut
out is not permitted.
6.
If a filter is installed near the furnace, be sure to
have adequate space for installation and removal
of the unit filter.
NOTE:
DO NOT take return air from furnace rooms,
garages or cold areas. Avoid return air from utility
rooms, kitchens, laundry rooms and bathrooms.
Du
ctin
g
DUCTING
!
WARNING
UPFLOW FURNACE: THE SOLID METAL BASE
PLATE (SHIPPED WITH THE FURNACE) MUST BE IN-
STALLED IN THE FURNACE BOTTOM WHEN USING
SIDE AIR RETURN. FAILURE TO INSTALL A BASE
PLATE COULD CAUSE THE PRODUCTS OF COM-
BUSTION TO CIRCULATE INTO THE LIVING SPACE
AND CREATE POTENTIAL LY HAZARDOUS CONDI-
TIONS, INCLUDING CARBON MONOXIDE POISON-
ING OR DEATH. FOR BOTTOM RETURN, A SOLID
METAL BASE PAN MUST NOT BE INSTALLED.
!
WARNING
A DOWNFLOW INSTALLATION IS CERTIFIED FOR
INSTALLATION ON A NON-COMBUSTIBLE FLOOR.
USE THE SPECIAL BASE SPECIFIED ON THE FUR-
NACE CLEARANCE LABEL. FAILURE TO INSTALL
THE SPECIAL BASE MAY RESULT IN FIRE, PROP-
ERTY DAMAGE, PERSONAL INJURY OR DEATH.
THIS BASE IS AVAILABLE AS AN ACCESSORY.
FIGURE 8
1
REMOVE BLOWER
DOOR AS SHOWN
RETAINING TAB
DETAIL
INSTALLATION OF SOLID METAL BASE FOR SIDE
RETURN APPLICATIONS
INTERNAL VIEW
OF BLOWER
COMPARTMENT
2
INSERT TAB ONTO
FLANGE AND PUSH
PANEL INTO PLACE
3
INSTALL SCREW IN TAB LOCATED
IN THE BLOWER COMPARTMENT
TAPE ALL EDGES OF BOTTOM
TO COVER GAPS
4
AFTER
INSTALLATION
OF BOTTOM
PLATE, SEAL ALL
SEAMS TIGHT
WITH METAL
TAPE
ST-A1194-49
43
Summary of Contents for 96MDV Series
Page 34: ...Field Conversions 34...
Page 35: ...Field Conversions 35...
Page 36: ...36 Field Conversions...
Page 37: ...37 Field Conversions...
Page 38: ...Field Conversions 38...
Page 115: ...115 TABLE 20 continued R96V FAULT CODES WITH DESCRIPTIONS AND SOLUTIONS Diagnostics...
Page 120: ...120 Diagnostics TABLE 20 continued R96V FAULT CODES WITH DESCRIPTIONS AND SOLUTIONS...
Page 126: ...126 FIGURE 65 2 STAGE ECM FURNACE WIRING DIAGRAM Troubleshooting...
Page 127: ...127...
Page 128: ...128 CM 1015...