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27Heatilator • CD4236IR-C, CD4842IR-C • 2207-900 Rev. J • 11/11
E. Vent Diagrams
Top Vent—Horizontal Termination—Two 45º Elbows
Installation requirements to replace the fi rst 90º elbow
with two 45º elbows:
4 ft min.
(1.22 m)
20 ft max.
(6.10 m)
Figure 7.3
Top Vent - Horizontal Termination
Fire Risk. Explosion Risk.
Do NOT pack insulation or other combustibles
between ceiling fi restops.
• ALWAYS maintain specifi ed clearances around
venting and fi restop systems.
• Install wall shield and ceiling fi restops as speci-
fi ed.
Failure to keep insulation or other material away
from vent pipe may cause fi re.
Example: DVP pipe 3 ft. min. vertical = 11 ft. max. horizontal
SLP pipe 7 ft. min. vertical = 11 ft. max. horizontal
Fire Risk.
• When using DVP-HRC-SS and DVP-HRC-ZC-
SS termination caps on top vented fi replaces, a
6 inch minimum vertical vent section is required
before installing fi rst elbow.
WARNING
WARNING
Note: The CD series fi replaces can adapt to SLP series
vent pipe, if desired.
When venting off the top of the unit, use a DVP-2SL adapter
and a minimum 48 inch vertical section of SLP series vent
pipe.
A DVP-SLP24 adapter may also be used with a 24 inch
vertical section of SLP series vent pipe.
After the 48 inch vertical section, the venting table rules
must be followed. The fi rst 48 inch vertical section is NOT
counted as part of the vertical components in the table. It is
still counted as part of the overall maximum run. All venting
table rules for the vent run must still be followed.