Condensate Drain Lines; Filter Retainer Brackets; Ventilaire™ Bracket - Nordyne M4RC Upflow Installation Instructions Manual

Figure 29. TEE, Reducer, and Hose Barbs
Figure 30. Filter Retainer Brackets
NOTE: For downflow models only.
Figure 31. VentilAire™ Bracket
22
Exhaust Air
Vent Pipe
2" PVC TEE
2" x 1/2" PVC
Reducer
1/2" x 1/2"
Hose Barb
1/2" x 3/4"
Hose Barb
Furnace Filter

Filter Retainer Brackets

Furnace Flanges
Bent up 90°
(3 places)
NOTE: For downflow models only.
VentilAire™
Bracket
Condensate Drain Lines (Figs. 42 - 43, pages 45 - 46)
The placement of the condensate drain lines will depend
on the confi guration selected in Table 5 (page 20). The
drain lines can be routed out the left or right side of the
furnace, but must maintain a downward slope to ensure
proper condensate drainage. The J-trap may need to be
rotated to the side that matches your setup in Figures
43 - 44 (pages 45 - 46). To rotate the J-trap, loosen the
clamp on the drain tube, rotate the J-trap to either side,
and retighten the clamp
Four general rules apply:
• Each condensate drain line must be separately trapped
using a J-Trap or fi eld supplied loop.
• A drain must always be attached to the collector at the
outlet of the secondary heat exchanger.
• A drain must always be at the outlet end of the inducer
assembly.
• A drain must always be at the lowest point of the venting
system.
Exceptions and clarifi cations to the general rules:
• If venting out the left or right side of the cabinet, the
vent must be turned vertically with a tee. The drip leg
formed by the tee, reducer, and hose barb must be
drained as shown in Options 2, 3, 5, 6, 8, 9, 11, & 12.
• In certain cases, the inducer may be drained back into
the collector pan (Options 1, 2, 4, 5, 7, 8, 10, & 11). Take
care that this drain tube does not sag in the middle.
• Sometimes the lowest point in the vent system is where
it connects to the inducer (Options 3, 6, 9, & 12). If the
distance between the exhaust pipe and the cabinet is 6
inches or less, one drain at this location is suffi cient. If
the distance is more than 6 inches, then another drain
will need to be added to the bottom of the tee.
IMPORTANT NOTE: If the furnace is installed in an
area where temperatures fall below freezing, special
precautions must be made for insulating condensate
drain lines that drain to the outdoors. If condensate
freezes in the lines, this will cause improper operation
or damage to the furnace. It is recommended that all
drain lines on the outside of the residence be wrapped
with an industry approved insulation or material
allowed by local code.
Filter Retainer Brackets (Figure 30)
1. Bend the rear, right and left side furnace fl anges
upward 90° with a pair of wide duct pliers.
2. Install three fi lter retainer brackets on the furnace
fl anges. NOTE: Press down fi rmly to ensure brackets
are tightly installed on the furnace fl anges.
3. Position a furnace fi lter on top of the fi lter brackets.
VentilAire™ Bracket (Figure 31)
Ventilation must be provided for homes built to HUD
Manufactured Homes Safety and Construction Standards.
This ventilation can be supplied by a VentilAire™ III