USE ONLY GENUINE REPLACEMENT PARTS 17
POSITIVE PRESSURE (HORIZONTAL OR VERTICAL, CATIII) VENTING:
When installed according to the following instructions, heaters meet the criteria for category III venting.
VENT SIZING: Vent pipe diameter must match the vent pipe diameter on the heater (see Table9). The vent pipe must be single or
double-wall stainless steel sealed vent as listed in Table9. Double-wall vent must be used in non- conditioned spaces. The
maximum total length of vent pipe, and number of 90-degree elbows cannot exceed the limits specified in Table8.The venting
system must be installed in accordance with the vent manufacturer’s installation instructions and guidelines. The installer is urged to
visit the vent system manufacturer’s website (see below) and review the installation information found there.
Table8 Positive-Pressure (CATIII) Indoor Vent Maximum Vent Lengths
Using Specified Positive Pressure Indoor Vent Kits
Number of 90- degree Elbows
Maximum Vent Pipe Length horizontal & vertical (ft.)
VENT TERMINATION: The vent system must terminate with a vent terminal approved for this pool heater. Termination may be
either horizontal or vertical. See Table9a for approved vent terminals and 9b for termination locations.
OBTAINING VENT PIPE AND TERMINATIONS: A variety of vent components, including terminals, elbows, and straight lengths,
are available for use with this appliance. Approved parts are listed in Table9 and in the service parts section in the back of this
manual. If you need more specialized fittings, you may order them directly from the manufacturer, or one of their authorized
dealers. To locate an authorized dealer for venting parts, contact the appropriate manufacturer at:
Heatfab Saf-T Vent EZ
Seal (CI Plus)
Notes for Table9 Positive-Pressure (CATIII) Indoor Vent Kits with Vent Pipe & Terminal Specifications
* For Heatfab single-wall vent pipe section length, “x” to be: 1, 2, 4, 5, or 7, where 1=6 inches, 2=12 inches, 4=18 inches, 5=24 inches, and
7=36 inches.
** For Heatfab double-wall vent pipe section length, “x” to be: 06, 09, 12, 18, 24, or 36, indicating the length of the vent pipe section in
inches.
† For DuraVent vent pipe section length, “x” to be: 6, 12, 18, 24, or 36, indicating the length of the vent pipe section in inches.
‡ For these horizontal terminals, the wall penetration is included from the vent manufacturer. On all others, it must be ordered separately.
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