915"min.4.0 CONDENSATE DRAINThis unit produces water as a product ofcombustion. Much of this water condenses onthe heat exchanger and in the venting system.All exhaust piping must be on a slope back tothe boiler ¼” per linear foot of vent. Steps mustbe taken to ensure that condensate does notcollect in the venting system. Condensate mustbe drained from the boiler into a household drain.Note: check with your municipality, or local gas company to determine if disposal of combustion condensate is permitted. In theState of Massachusetts the condensate must be neutralized prior to entering a drain.The following are important notes that must be taken into consideration when constructing the condensate system:• DO NOT run condensate line outside. A frozen or blocked drain will cause the condensate to fill the combustion chamber. Thiswill result in a no heat condition, as the unit will shut down, and damage to the flame sensor, and components can occur.• NEVER use copper, steel, or galvanized piping in the construction of the condensate system (condensate is very corrosive andwill wrought most metals).• When a condensate pump is used or required, select a pump that is designed for residential furnaces.WarningFailure to properly connect the condensateline will cause combustion gases to enter theroom, possibly causing serious injury tooccupants or death.Condensatefrom BoilerBottomPanelCondensateTrap & drainCondensate drainpipemust not be sealed,thus allowingoverflow if blocked.CondensateSiphon (Factoryinstalled in Ti400)White Siphon drainpipe mustterminate above any possible waterline in the house drainWarning:The condensate drain kit suppliedwith each boiler is susceptible toflooding if the drain hose exitingthe kit is lengthened or insertedinto a drain. If additional lengthis required, do not use the drainkit provided, instead fabricate a15” trap using tubing suitable forcondensate disposal.