Raypak Hi Delta 992B-1262B Installation & Operating Instructions Manual

Also see for HI DELTA 1262B: Specification sheet Installation & operating instructions Specifications Installation & operating instructions Brochure & specs

26CombustionAir SupplyExhaustConfigurationHeater VentingCategoryCertifiedMaterialsCombustion AirInlet MaterialVertical NaturalDraft Venting I “B” VentFrom Inside Building(Non-Direct Venting) Horizontal Through-the-Wall Venting III Stainless Steel(Gas Tight)Vertical NaturalDraft Venting I “B” VentFrom Outside Building(Direct Venting) Horizontal Through-the-Wall Venting III Stainless Steel(Gas Tight)Galvanized SteelPVCABSCPVCCategory II – A heater which operates with a non-pos-itive vent static pressure and with a vent gastemperature that may cause excessive condensateproduction in the vent.Category III – A heater which operates with a positivevent pressure and with a vent gas temperature thatavoids excessive condensate production in the vent.Category IV – A heater which operates with a positivevent pressure and with a vent gas temperature thatmay cause excessive condensate production in thevent.See Table K for appliance category requirements.Support of Vent StackThe weight of the vent stack or chimney must not reston the heater vent connection. Support must be pro-vided in compliance with applicable codes. The ventshould also be installed to maintain proper clearancesfrom combustible materials.Use insulated vent pipe spacers where the vent pass-es through combustible roofs and walls.Vent Terminal Location1. Condensate can freeze on the vent cap. Frozencondensate on the vent cap can result in a blockedflue condition.2. Give special attention to the location of the venttermination to avoid possibility of property dam-age or personal injury.3. Gases may form a white vapor plume in winter.The plume could obstruct a window view if the ter-mination is installed near windows.4. Prevailing winds, in combination with below-freez-ing temperatures, can cause freezing ofcondensate and water/ice build-up on buildings,plants or roofs.5. The bottom of the vent terminal and the air intakeshall be located at least 12 in. above grade, includ-ing normal snow line.6. Un-insulated single-wall metal vent pipe shall notbe used outdoors in cold climates for venting gas-fired equipment.7. Through-the-wall vents for Category II and IVappliances and non-categorized condensing appli-ances shall not terminate over public walkways orover an area where condensate or vapor couldcreate a nuisance or hazard or could be detrimen-tal to the operation of regulators, relief valves, orother equipment. Where local experience indi-cates that condensate is a problem with CategoryI and III appliances, this provision shall also apply.NOTE: For additional information on appliancecategorization, see appropriate ANSI Z21 Standardand the NFGC (U.S.), or B149 (Canada), orapplicable provisions of local building codes.CAUTION: When condensate traps are installed,condensate must be routed to an appropriatecontainer for neutralization before disposal, asrequired by local codes.WARNING: Contact the manufacturer of the ventmaterial if there is any question about the appliancecategorization and suitability of a vent material forapplication on a Category III or IV vent system.Using improper venting materials can result inpersonal injury, death or property damage.NOTE: During winter months check the vent capand make sure no blockage occurs from build-up ofsnow or ice.Table K: Venting Category Requirements