Tankless Water Heater - Waiwela

Installing the water heater:Indoor Water HeaterInsideCornerIf soffit vent is too close,block off and install newvent at another location.Caulk6’ (1.8 m)Caulk ZoneCaulkWARNING: Moisture in the flue gas will condense as itleaves the vent terminal. In cold weather this condensate canfreeze on the exterior wall, under the eaves and onsurrounding objects. Some discoloration to the exterior ofthe building is to be expected. However, improper locationor installation can result in severe damage to the structureor exterior finish of the building6’(1.8 m)Rising moisture willcollect under eaves.6’ (1.8 m)Caulkzone or to edge of windowetc.,starting within 6’ (1.8 m).CaulkRTV silicone caulk4’ 1 ft. sq. (30 x 30 cm) sheet metal plate onbrick or masonry surface, recommended.(1.2 m)WARNING: For multiple unit installation, a minimumdistance between vent terminations must be maintained toprevent recirculation of vent gases. Maintain a center-to-centerdistance between vent terminations of 19 inches (48 cm) for twounit installation. Maintain a center-to-center distance betweenvent terminations of 21 inches (53 cm) for three or more unitinstallation.Additional ConsiderationsDo NOT install vent terminal under any patio or deck.To help prevent moisture from freezing on walls and undereaves, do not locate vent terminal on the side of a build ing withprevailing winter winds.To help prevent water lines from freezing, do not locate ventterminal on the side of a building with prevailing winter winds.Do NOT terminate vent directly on brick or masonary surfaces. Arust resistant sheet metal backing plate (1x1 foot) (30x30 cm) isrecommended behind vent. See figure on left. Do Not locate vent terminal too close to shrubbery, as flue gasesmay damage them.Caulk all cracks, seams and joints within six (6) feet (1.8 m) ofvent terminal.Caulk around wall face plate for weather tight seal.All painted surfaces should be primed to lessen the chance ofphysical damage. Painted surfaces will require maintenance.Insulate vent pipe of water heaters exposed to cold conditions(attics, crawl spaces, etc.) with inflammable material to help preventmoisture from accumulating in the vent pipe. The insulation shouldbe rated for the temperature and should not contain substances thatcorrode the vent pipe.Do NOT extend exposed vent pipe of indoor water heaters outsideof building.Guard vent against accidental contact with people and pets.12AP14558-1 (09_08) DV 66 Manual.indd 129/17/2008 3:07:56 PM