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Condensate Drain
Each Rinnai tankless water heater has a condensate
drain outlet on the bottom of the unit. A drain line
must be connected to each water heater.
Freestanding rack systems with 3 or more units will
include a prefabricated condensate manifold. For all
other rack systems, a condensate drain manifold must
be field fabricated (not shown in diagram)
Condensate piping shall be CPVC or PVC material and
shall not be smaller than the drain connection on the
appliance.
Components of the condensate drainage shall be
CPVC or PVC material. All components shall be
selected for the pressure and temperature rating of
the installation.
Where the drain pipes from more than one unit are
manifolded together for condensate drainage, the
pipe or tubing shall be sized in accordance with an
approved method as dictated by local codes.
Condensate must be disposed of according to local
codes.
Piping Diagram for Basic Installation
Water
Gas
drain plug
connection
Condensate
Hot water
trap drain plug
outlet
The condensate drain pipe (along its entire
length) must be at least the same diameter
as the drain line.
Condensate Manifold
Condensate Manifolds are installed above the water
manifolds of the following racks for single point
condensate connection.
MODELS AVAILABLE WITH CONDENSATE
MANIFOLDS:
Condensate
Manifold 3/4‖
Connection
Cold water
inlet
Field Supplied PVC
Condensate drain must be sloped downward from the
rack system. Condensate must be disposed of per local
Condensate
codes.
drain line
The telescoping fitting on the capped side of the
condensate manifold is for air relief. DO NOT
plug the opening.
37
TRS03ILW
TRS03IL
TRS36
TRS46
TRS06
NOTICE
TRS03
TRS04
TRS05
Rinnai Rack Installation
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