6.
Cut the formed vent drain tube to the required length if neces-
sary, and slide over inlet on the drain trap (smaller diameter
inlet hole). Fasten by tightening the tube clamp approximately
⅛” from the end of the tube.
7.
All drain tubes must slope towards the drain trap.
!
CAUTION
Ensure that drain hoses do not create traps prior to the
condensate trap assembly. A secondary trap will cause in-
termittent operation due to the pressure switches opening.
Drain Piping
Condensate from the outlet of the drain trap assembly must be
conveyed to a fl oor drain, sump pit, or, if these are unavailable,
to a condensate pump. If using a condensate pump, be sure that
it is approved for furnace condensate.
!
CAUTION
Do not drain the condensate outdoors. Do not run the
condensate line through areas where freezing might occur.
Freezing of condensate can result in erratic furnace opera-
tion and in property damage.
Figure 26 - Condensate Trap/Condensate Drainage With
Vent
Th
e furnace may condense as much as a 4½ pounds of water per
hour (approximately 2 imperial quarts, 2½ U.S. quarts or 2¼ liters).
It is necessary to make provisions for draining the condensate away.
Th
e furnace is supplied with a drain trap assembly. See
Figures 18
-25
for possible locations of the drain trap.
Th
e drain coupling on the inducer will work better if the drain holes
are pointed down about 15 degrees. Th
e drain hose supplied with the
furnace is long enough to reach either side panel; however, it must be
cut near the blower division panel. Th
is is to prevent kinking in the
drain lines.
!
CAUTION
Th
e two inlets to the drain trap are for vent pipe and con-
densate collection. Th
e vent pipe inlet is smaller than the
condensate collection inlet. Ensure that the drain hoses are
properly connected.
Drain Hose Installation
1.
Select a drain trap location suitable for the orientation of the
furnace and remove the corresponding knockouts. See
Figures
18-25
.
2.
Affi x the drain trap assembly to the exterior of the side panel
when the furnace is upfl ow or downfl ow using two screws
provided. For horizontal positions the installer will need to use
the mounting bracket supplied and secure the bracket to the top
panel. Remove two top panel screws and fasten bracket to top
panel with removed screws. Secure trap assembly using screws
provided to the mounting bracket.
3.
Slide the short end of the 5/8” formed tube over the appropri-
ate condensate outlet on the front manifold cover, and fasten
by tightening the tube clamp approximately ⅛” from the end of
the tube.
4.
Cut the formed drain tube to the required length if neces-
sary, and slide tube over the condensate inlet on the drain trap
(larger diameter inlet hole). Fasten by tightening the tube clamp
approximately ⅛” from the end of the tube.
5.
Rotate exhauster coupling 15 degrees downwards, and remove
the yellow cap over the lowest vent drain outlet. Slide the short
end of the ½” drain tube on the exhauster coupling drain.
Fasten by tightening the tube clamp approximately ⅛” from the
end of the tube.
16 - CONDENSATE DRAINS
33
