Raypak Hi Delta 302A-902A Installation And Operating Instructions Manual

10In addition, the heater shall be installed such that thegas ignition system components are protected fromwater (dripping, spraying, rain, etc.) during applianceoperation or service (circulator replacement, controlreplacement, etc.).ClearancesIndoor InstallationsHeaterSideMinimum Clear-ancefrom CombustibleSurfacesRecommendedServiceClearanceFloor* 0” 0”Rear 1” 24”Water Side 12” 24”Other Side 1” 24”Top 1” 1”Front Open 24”Vent 2” 2”Table E: Clearances – Indoor InstallationsTOP VIEWFRONT VIEWVenting not shown for clarity. Heater must be ventedper instructions in this manualFig. 6: Minimum Clearances from CombustibleSurfaces – Indoor InstallationsWhen installed according to the listed minimum clear-ances from combustible construction, these heaterscan still be serviced without removing permanentstructural construction around the heater. However, forease of servicing, we recommend a clearance of atleast 24 in. in front, and at least 12 in. on the waterconnection side. This will allow the heater to be serv-iced in its installed location without movement orremoval of the heater.Service clearances less than the minimums mayrequire removal of the heater to service either the heatexchanger or the burner tray. In either case, the heatermust be installed in a manner that will enable theheater to be serviced without removing any structurearound the heater.Outdoor InstallationsThese heaters are design-certified for outdoor installa-tion. Heaters must not be installed under an overhangthat is less than 3 ft from the top of the heater. Threesides must be open in the area under the overhang.Roof water drainage must be diverted away fromheaters installed under overhangs.HeaterSideMin. Clearancefrom CombustibleSurfacesRecommendedServiceClearanceFront Open 24”Rear 12” 24”Water Side 36” 36”Other Side 36” 36”Top Unobstructed UnobstructedVent N/A N/ATable F: Clearances – Outdoor InstallationsThese clearances are required when the outdoorvent cap is used. If installing the heater outdoorswith a vent stack, the indoor clearances may beutilized.The combustion air intake hood MUST be used foroutdoor installations. The hood is shipped loose andinstalled on the side of the heater over the filter box atthe jobsite.* DO NOT install on carpeting.