Hayward H150FDN All models English - Page 10

SECTION 3. INSTALLATION Outdoor installation and venting: The following installation and service clearances must be maintained from surfaces to provide adequate air flow to the heater. Outdoor Installations Top - Open and unobstructed Front - Unobstructed Back - 6" Non-combustible floor Right side (Water side) - 12" Left side - 6" Figure 9 1. O utdoor models with integral vent or HWS vent are self-venting and do not require additional vent piping. 2. D o not install in a location where growing shrubs may in time obstruct a heater's combustion air and venting areas. 3. W hen locating an outdoor model consider that high winds can roll over or deflect off adjacent buildings, walls, and shrubbery to create a negative draft causing flame rollout and sooting, reducing combustion efficiency and damaging controls. Normally, placing the heater at least 2 feet from any wall will prevent this condition. 4. T he venting system shall terminate at least 4 feet below, 4 feet horizontally from, or 1 foot above any door, window, or gravity air inlet into any building. The bottom of the vent terminal shall be located at least 12 inches above grade. A venting system shall terminate at least 3 feet above any forced air inlet located within 10 feet. See Figure 10. ! WARNING: (Canadian Installations Only) - The venting system shall not be installed with the top of the vent assembly within 10 feet below or to either side of any opening into the building. 5. D o not install this appliance under an overhang less than 3 feet from the top of the appliance. The area under the overhang must be open on three sides. 6. D o not install heater directly under a roof overhang edge that is not equipped with a rain gutter. Cascading rain water off the roof edge could otherwise cause pilot outage or other operating problems. 7. D o not install heater where water spray from ground sprinklers can contact heater. Sprinkler water could cause pilot outage or other operating problems. 8. D o not install within 3 feet of an air conditioning condensing unit. Blown air from a condensing unit adjacent to heater could cause pilot outage, poor combustion, or other operating problems. 9. D o not install under a deck. 10. A ny enclosure around the heater must provide a combustion air vent commencing within 12 inches of the bottom of the enclosure. The vent opening shall have a minimum free area of 1 square inch per 4,000 BTU per hour of total input rating of all heaters in the enclosure. See Figure 11. OPEN OR GRATED TOP HEATER INSIDE ENCLOSURE 4' MIN. 4' MIN. FORCED 3' MIN. AIR INTAKE 10' MIN. Figure 10: Outdoor Installation 8 OUTDOOR EQUIPMENT ENCLOSURE (BLOCK WALL OR OTHER FENCING) COMBUSTION AIR VENT 12" OR LESS Figure 11: Outdoor Enclosure