Vent Screen Installation; Important Notes And Warnings - Kenmore 153.331350 Use & Care Manual

Vent Screen Installation
• Install the appropriate vent screen into the vent
termination elbow.
• Gently push the screen into the termination
elbow until it sits against the inside shoulder.
• The metal wire screens are self-securing.
• Plastic screens must be secured with (2) drops
of silicone sealant. This will allow for easy
removal for inspection and cleaning.
For heaters with rated in
with 2 in. venting (short)
VENT LENGTH LESS THAN OR EQUAL
TO 20 EQUIVALENT FT.
(6.1 METRES) USE THIS SCREEN
(SUPPLIED).
with 3 in. venting
VENT LENGTH LESS THAN OR EQUAL
TO 50 EQUIVALENT FT.
(15.2 METRES) USE THIS SCREEN
(SUPPLIED).
with 4 in. venting
_uts of 50k Btu/hr or less:
with 2 in. venting (long)
VENT LENGTH GREATER THAN
20 EQUIVALENT FT.
(6.1 METRES) USE THIS SCREEN
(SUPPLIED).
with 3 in. venting
VENT LENGTH GREATER THAN
50 EQUIVALENT FT.
(15.2 METRES) USE THIS SCREEN
(SUPPLIED).
VENT LENGTH GREATER THAN
125 EQU IVALENT FT.
(38.1 METRES) USE THIS SCREEN
(SUPPLIED).
Figure 22
Important Notes and Warnings
• This heater is certified to be installed using
PVC, CPVC, ABS or polypropylene plastic vent
material. Only use approved material. All venting
material and components must be joined
with the approved primer/cleaner and solvent
cement.
• Do not common vent this heater with any other
appliance.
• During operation the plastic piping will expand
as it heats up and contract as it cools down.
This is normal for this type of venting. Rigidly
fastening the vent piping can cause undue
stress that may result in the cracking or
fracturing the vent piping material. A fracture
of the venting pipe may pose a serious safety
hazard. To prevent stressing of the vent system,
all hangers and supports must allow the vent
piping freedom to move.
• Use long sweep elbows wherever possible.
Closely-coupled elbows and short radius elbows
can reduce the venting capacity (see Figure 20).
• All power vented water heaters generate a
certain amount of operational noise. In order
to minimize noise transmission to the support
structure, use isolation pads between the pipe
hangers and the vent pipe.
• Most power vent installations develop some
condensation in the vent piping. When using
long runs of venting or when the venting passes
through cold or unheated areas, considerable
amounts of condensate from the flue gases
can develop. Provision must be made for the
condensate to drain freely from the system or to
be collected in a condensate trap(s) that can be
drained. Damage or fracture of the vent piping
may occur if the condensate is allowed to collect
and freeze. Pooling of condensate can restrict
airflow and can cause nuisance failures of the
system.
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