Hayward Universal H-Series Low NOx Service/Installation: H150FDN H200FDN H25 - Page 16

16 HORIZONTAL OR VERTICAL VENTING - POSITIVE PRESSURE Vent Sizing Vent pipe diameter must match the vent pipe diameter on the heater (see Table 7). The vent pipe must be Heatfab single or double-wall stainless steel sealed vent as listed in Table 7. 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 8. The venting system must be installed in accordance with the vent manufacturer's (Heatfab) 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 7 for the Heatfab vent terminals which are approved. Obtaining Vent Pipe and Terminals You must purchase your vent pipe and vent terminal either from Heatfab directly, or from an authorized Heatfab dealer. To locate a dealer for Heatfab venting parts, contact Heatfab at: Selkirk Corporation Heatfab Division 130 Industrial Blvd Turners Falls, MA 01376 (800) 772-0739 www.heatfab.com Table 8 Maximum Vent Pipe Length and Number of Elbows for Positive-Pressure Vent Systems Number of 90degree Elbows 0 1 2 3 Maximum Vent Pipe Length (horizontal & vertical) 50 ft 50 ft 40 ft 30 ft USE ONLY HAYWARD GENUINE REPLACEMENT PARTS Pomona, CA Clemmons, NC Nashville, TN Tel: 908-351-5400 www.haywardpool.com