York TP9C Series Installation Manual

Also see for CP9C Series: User's information manual User's information manual

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York TP9C Series Installation Manual Manual pdf 22 page image

1083292-UIM-A-011422 Johnson Controls Unitary ProductsThe condensate will flow to the drain better if an open stand pipe isinstalled in the drain line. See Figure 28.If evaporator coil or humidifier drains are combined with the furnacedrain, then the open stand pipe could be raised higher, above the 5”minimum.Do not drain other devices (humidifier, evaporator coil, etc.) into the topopening of the vent stand pipe. Instead, install a second tee in thevented drain tube below the furnace drain tee and route additionaldrainage through the new tee.CONDENSATE DRAIN TERMINATIONA condensate sump pump MUST be used if required by local codes, orif no indoor floor drain is available. The condensate sump pump mustbe approved for use with acidic condensate.FIGURE 28: Typical Condensate Drain, Vertical InstallationTo Open OrVented DrainTee5” Min.Open Stand Pipe(Anti-siphon air vent)A loop has been added to the pressure switch vacuum hose. How-ever, ensure that all pressure switch hoses are routed such thatthey prevent any condensate from entering the pressure switch.It is possible for condensation to form inside the combustion air(intake) pipe in the summer months if significant length of combus-tion air pipe passes through conditioned space. This problem canbe averted by installing the supplied vent drain and drain hoselocated in the loose parts bag. The intake drain hose is to beinstalled by connecting it to the inlet pipe coupling and to the collec-tor box as shown in Figures 29, 31, and 32. The drain hose mustnot sag or droop after it is installed. If glue is used when connectingthe intake pipe to the intake coupling, the drain opening in the ventdrain must not be plugged. If the intake drain is used, the birdscreen cannot be installed. This is only approved for upflow andhorizontal applications when the intake pipe is located on the top ofthe furnace. This is true for all long horizontal venting in any furnaceconfiguration. This will keep condensate from entering the furnace.DO NOT terminate the condensate drain in a chimney, or where thedrain line may freeze. If the drain line will be exposed to tempera-tures below freezing, adequate measures must be taken to preventthe drain line from freezing. Failure to provide proper protectionfrom freezing can result in improper operation or damage to theequipment and possible property damage. When exposed to tem-peratures below freezing, use of a 3 to 6 watt per foot at 115 VAC,40°F (4.4°C) self-regulating, shielded and waterproof heat tape isrecommended on the drain line outside the furnace.DO NOT trap the drain line at any location. The furnace has a con-densate drain trap built into the drain pan.Liquid anti-freeze will cause damage to internal plastic parts of thisfurnace. DO NOT attempt to winterize the furnace using liquidanti-freeze.NOTICE