LAARS U.H.E. - Installation Manual - Manual (Page 32)

NOTICE
Position termination where vent vapors will not damage plants/shrubs or air conditioning
equipment.
Position termination where vent vapors will not be adversely affected by wind condition.
Position termination where it will not be damaged or be subjected to foreign objects.
Position termination where vapors will not be objectionable.
3. Cut the recommended 5” diameter hole.
4. Partially assemble vent kit.
a. Cement Y concentric fitting to larger diameter kit pipe. (See Figure 20).
b. Cement rain cap to smaller diameter kit pipe. (See Figure 21).
5. Install concentric Y fitting and pipe assembly through the structure’s hole and field-supplied roof
boot/flashing. Do not allow insulation or other materials to accumulate inside pipe assembly when installing
through the hole.
6. Install rain cap and small diameter pipe assembly in concentric Y fitting and large pipe assembly. Ensure
small diameter pipe is cemented and bottomed in concentric Y fitting.
7. Secure assembly to structure as shown in Figure 23. Ensure clearances as shown in Figure 23.
Figure 23. Concentric Vent Side Wall Attachment
8. Cement heater combustion-air and vent pipes to concentric Y fitting termination assembly. See Figure 23 for
proper pipe attachment.
9. Operate heater through one cycle to ensure combustion-air and vent pipes are properly connected and sealed to
concentric vent termination connections.
VENT PIPE PREPARATION
WARNING
DO NOT attempt to start this water heater until vent pipe solvent fumes completely clear
from the room and inside the vent piping.
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