Vent Pipe Sizing And Installation - Jandy 200 Installation And Operation Manual

Jandy Pro Series, JXi
®
III vertical and horizontal venting. The only correct
procedure for vent pipe sizing is to do so in accordance
with Table 2 (Section 3.3.2 of this manual) and the
applicable installation code as stated in the following
warning and Table 13.1(a) and 13.1 (b) per NFPA 54
for category I and Table 3 for Category III.
WARNING
Vent pipe materials, sizing, and installation must be
as required by the National Fuel Gas Code NFPA 54/
ANSI Z223.1 or the Canadian Installation Codes for
Gas Appliances CAN/CSA-B149.1. Undersized pipe
can result in inadequate venting and oversize pipe
can result in vent condensation. Improper selection
of vent pipe material, incorrect sizing of the pipe, and
misinstallation of vent piping can result in release of
combustion products to the indoors. This can cause
serious injury or death by Carbon Monoxide poisoning
or asphyxiation.
Note that with horizontal Category III type vent
installations, the venting diameter is four (4) inches and
AL29-4C stainless steel. The JXi flue collar fits 4-inch
®
vent pipe and elbows. See Section 3.3.1 for procedure to
connect vent pipe and elbows.
3.3

Vent Pipe Sizing and Installation

The JXi may be installed with venting as a Category I or
Category III appliance.
A Category I appliance is a vented
• Category I:
appliance that operates with a non-positive vent static
pressure and with a vent gas temperature that avoids
excessive condensate production in the vent. Category
I installations are vented vertically and terminate at
the roof.
A Category III appliance is a vented
• Category III:
appliance that operates with a positive vent static
pressure and with a vent gas temperature that avoids
excessive condensate production in the vent. Category
III installations can be vented via a side wall.
In all installations (Category I and Category III):
• Avoid terminating heater vents near air conditioning
or air supply fans. Fans can pick up exhaust flue
products from the heater and return them inside the
building, creating a possible carbon monoxide or
other health hazard.
• Selection of vent pipe type and material must be
carefully considered depending on the type of
installation. Zodiac strongly recommends using high
quality vent pipe materials, which are corrosion
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Gas-Fired Pool & Spa Heater
™
Installation & Operation Manual
resistant and suitable for the specific installation being
considered
• Do not locate the vent terminal where flue products
could strike against building materials and cause
degradation.
• Vent opening should be well away from trees or other
obstructions that would prevent free air flow to and
from vent terminal.
• Do not terminate the vent under decks, stairways, or
car ports.
3.3.1 Vent Pipe or Elbow Increaser Installation
(Category I and Category III)
1. Remove the exhaust body.
2. Remove the exhaust rain shield (see Figure 5).
Exhaust Vent
Figure 5. Remove Exhaust Body and Rain Shield
3.
Category I:
Install a 4 inch double-wall appliance adapter and
an increaser to meet the vent size requirements per
Table 2. (See Figure 6.)
Category III:
Install vent connector or elbow to the flue collar
according to the specific installation instructions
from the vent connector or elbow component
manufacturer.
ENGLISH
Rain Shield
Page 11