Installation Guide

Pomona, CA Clemmons, NC Nashville, TN
Tel: [phone] www.haywardpool.com
USE ONLY HAYWARD GENUINE REPLACEMENT PARTS
16
HORIZONTAL OR VERTICAL VENTING – POSITIVE PRESSURE
When installed according to the following instructions, UHS heaters meet the criteria for cateogry III venting.
VENT SIZING
Vent pipe diameter must match the vent pipe diameter on the heater (see Table 9). The vent pipe must be
single or double-wall stainless steel sealed vent as listed in Table 9. 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 specied in Table 8.
The venting system must be installed in accordance with the vent manufacturer’s installation instructions and
guidelines. The installer is urged to visit Heatfab’s website (www.heatfab.com) and review the installation
information for Saf-T Vent EZ-Seal (single-wall) and/or Saf-T Vent CI Plus (double-wall) products.
VENT TERMINATION
The vent system must terminate with a vent terminal approved for this pool heater. Termination may be either
horizontal or vertical. See Table 9 for vent terminals which are approved.
OBTAINING VENT PIPE AND TERMINALS
Hayward offers a variety of double-wall vent components, including terminals, elbows, and straight lengths,
which will satisfy the needs of most applications. The available parts are listed in the service parts section in
the back of this manual. Also, Hayward publishes an instruction sheet which can be used as a guide in
specifying installations. It can be obtained on Hayward’s website at www.haywardnet.com. If you need more
specialized ttings, 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:
Selkirk Corporation M&G DuraVent Inc.
Heatfab Division 6 Jupiter Ln.
130 Industrial Blvd OR Colonie, NY 12205
Turners Falls, MA 01376 [phone]
[phone] www.duravent.com
www.heatfab.com
Number of 90-
degree Elbows
Maximum Vent Pipe
Length
(horizontal & vertical)
0 50 ft
1 50 ft
2 40 ft
3 30 ft
Table 8
Maximum Vent Pipe Length and Number of Elbows for
Positive-Pressure Vent Systems