909 SE EVERETT MALL WAY CRUCIBLE BREWERY 2025-03-28

4.9 Connect Condensate Drain 4.9.1 Guidelines To prevent condensate damage, follow these • A condensate neutralizer kit is available guidelines: from Rinnai. The kit allows condensate to flow through neutralizing media that raises • Do not plumb the condensate drain with the pH of the condensate to a level that the pressure relief valve; both must be will help prevent corrosion of the drain and plumbed independently to drain. public sewer system. Refer to section "3.6 • All condensate must drain and be dis- Accessories"for more information. posed of according to local codes. • The condensate drain pipe should be as • Use only corrosion resistant materials for short as possible and have a downward the condensate drain lines such as PVC pitch. pipe or plastic hose. • The condensate trap will automatically • The condensate drain pipe (along its entire prime (self-prime)during operation of the length) must be at least the same diameter water heater as condensate forms. Con- as the drain line (1/2 in. MNPT). densate draining from the water heater • Condensation drain lines installed in areas indicates that the trap is full and that there that are subject to freezing temperatures is no blockage in the condensate drain. It should be wrapped with an approved sup- is not necessary to add water to the con- plemental heat source. Install per manu- densate trap. facturer's instructions. • DO NOT connect the condensate drain • Slope the condensate drain lines toward line with an air conditioning evaporator coil the inside floor drain or condensate pump. drain. • The end of the condensate drain pipe • Water heaters have an integrated should be open to the atmosphere. The condensate trap. DO NOT install end should not be under water or other an external condensate trap. substances. I Ed CORRECT NOT CORRECT Pipe open to Pipe submerged atmosphere in water Water Water Neutralizer Level Pipe open to Refer to neutralizer atmosphere Installation Manual and local codes for ALevel /__ neutralizer installation guidelines. Figure 59 • For external (outdoor) installations, to min- imize freezing of the condensate, run the condensate drain line through an interior wall or between insulation and an interior wall. Pipe open to • If a floor drain is not available or the drain atmosphere is above the level of the condensate drain, a condensate pump should be installed. JCondensate Figure 60 Pump Rinnai Tankless Water Heater Installation and Operation Manual 58