Raypak Xtherm 1505A Installation & Operating Instructions Manual

Also see for Xtherm 1005A: Installation and operation manual

34cap to the side of the adjacent vent cap(s).Combustion air supplied from outdoors must be free ofparticulate and chemical contaminants. To avoid ablocked flue condition, keep the vent cap clear ofsnow, ice, leaves, debris, etc.Outdoor InstallationXTherm heaters are certified for outdoor operation innon-freezing conditions only. Freezing conditions maycause condensate to freeze in the condensate drainline and trap causing the unit to shut down from ablocked condensate drain. Additionally, components ofthe condensate management system may be dam-aged by the ice formation. Units installed in freezingclimates for seasonal use must be winterized to avoidfreeze damage to the heater.Outdoor models must be vented with listed vent mate-rial per the following instructions and installed with theoptional factory-supplied outdoor vent kit. A specialvent cap is provided in accordance with CSA require-ments. It must be installed directly on the vent pipe asillustrated in Fig. 29 on page 30.Care must be taken when locating the heater out-doors, because the flue gases discharged from thevent cap can condense as they leave the cap.Improper location can result in damage to adjacentstructures or building finish. For maximum efficiencyand safety, the following precautions must beobserved:1. Outdoor models must be installed outdoors andmust use the outdoor vent cap and air intake hoodavailable from the manufacturer (sales orderoption D-11).2. Periodically check venting system. The heater’sventing areas must never be obstructed in anyway and minimum clearances must be observedto prevent restriction of combustion and ventilationair. Keep area clear and free of combustible andflammable materials.3. Do not locate adjacent to any window, door, walk-way, or gravity air intake. The vent must belocated a minimum of 4 ft horizontally from suchareas.84. Install above grade level and above normal snowlevels.5. Vent terminal must be at least 3 ft above anyforced air inlet located within 10 ft.6. Adjacent brick or masonry surfaces must be pro-tected with a rust-resistant sheet metal plate.Freeze ProtectionTo enable freeze protection, dip switch position 7 (onthe PIM™) must be turned on (UP position). This isthe default position.If the water temperature drops below 45˚F on theOutlet or Inlet sensors, the Boiler pump is enabled.The pump is turned off when both the Inlet and Outlettemperatures rise above 50˚F.If either the Outlet or Inlet temperature drops belowWARNING: No substitutions of flue pipe or ventcap material are allowed. Such substitutions wouldjeopardize the safety and health of inhabitants. NOTE: The vent cap and air intake hood must befurnished by the heater manufacturer in accordancewith its listing (sales order option D-11).NOTE: Condensate can freeze on the vent cap.Frozen condensate on the vent cap can result in ablocked flue condition. Condensate is acidic andhighly corrosiveNOTE: Centrotherm polypropylene vent materialcannot be used for outdoor installations.Fig. 29: Outdoor Venting