19
ONLY USE GENUINE HAYWARD REPLACEMENT PARTS
51300803801 REV B
Figure 10: Minimum Height from Roof for Vent Cap
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 Table 8). The vent pipe must be single or double-wall
stainless steel sealed vent as listed in Table 8. 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
Table 7.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.
VENT TERMINATION:
The vent system must terminate
with a vent terminal approved for this pool heater. Ter-
mination may be either horizontal or vertical. See Table
8 for approved vent terminals and orientations.
OBTAINING VENT PIPE AND TERMINATIONS:
A
variety of vent components, including terminals, elbows,
and straight lengths, are available for use with this appli-
ance. Approved parts are listed in Table 8 and in the
service part instructions supplied with any service kit.
They can be ordered directly from the manufacturer, or
one of their authorized dealers. To locate an authorized
dealer for venting parts, contact the appropriate manu-
facturer at:
Selkirk Corpora on
Hea ab Division
130 Industrial Blvd
Turners Falls, MA 01376
(800) 772‐0739
www.hea ab.com
Hea ab Saf‐T Vent EZ Seal (CI Plus)
Roof Slope
Min. Height (H) from
Roof to Lowest Dis-
charge Opening
(ft.)
(m)
Flat to 6/12
1.0
0.30
Over 6/12 to 7/12
1.25
0.38
Table 6: Height Requirements for Negative
Pressure (CAT I) Vent Caps (see Figure 11)
Over 7/12 to 8/12
1.5
0.46
Over 8/12 to 9/12
2.0
0.61
Over 9/12 to 10/12
2.5
0.76
Over 10/12 to 11/12
3.25
0.99
Over 11/12 to 12/12
4.0
1.22
Over 12/12 to 14/12
5.0
1.52
Over 14/12 to 16/12
6.0
1.83
Over 16/12 to 18/12
7.0
2.13
Over 18/12 to 20/12
7.5
2.27
Over 20/12 to 21/12
8.0
2.44
Table 7: Positive-Pressure (CAT III) Indoor Vent Maximum
Vent Lengths Using Specified Positive Pressure Vent
Components
Number of 90° Elbows
Maximum Vent Pipe Length, Horizontal & Ver cal ( .)
0
45
1
45
2
35
3
25
