Rinnai . REU-VC2025FFU-US, Installation And Operation Manual

Page: 15 / 80

Value Series Manual 15
Condensate
(indoor models only)
Condensate forma on can occur in high e ffi ciency
direct vent appliances. Without proper drainage
condensate will damage the heat exchanger.
To prevent condensate damage follow these
instruc ons.
DO NOT
•
Do not allow condensate to enter the water
heater.
•
Do not connect the condensate drain pipe directly
to the rain sewer.
•
Do not connect the condensate drain line with an
air condi oning evaporator coil drain.
MUST DO
•
Use only vent that is approved and iden fi ed as
acceptable for your par cular model.
•
For ver cal termina ons, install a condensate drain
and trap as close as possible to the appliance.
•
Slope the ven ng toward the appliance according
to the vent manufacturers installa on instruc ons.
•
All condensate must drain and be disposed of
according to local codes.
•
Use only PVC or CPVC pipe for the condensate
drain line.
•
The condensate drain pipe (along its en re length)
must be at least the same diameter as the drain
line, (5/8 inch NPT).
•
The end of the condensate drain pipe should be
open to the atmosphere. The end should not be
under water or other substances.
•
To minimize freezing of the condensate, run the
condensate drain line through an interior wall or
between insula on and an interior wall.
•
The condensate collector should be used for all
hydronic hea ng applica ons.
Checklist for Ven ng and
Condensate (indoor models only)
□
Verify proper clearances around the vents and air
intakes.
□
Ensure you have used the correct ven ng
products for the model installed and that you
have completely followed the ven ng
manufacturer’s installa on instruc ons and these
installa on instruc ons.
□
Verify that the vent pipe has a downward slope or
grade to the outside of 1/4 inch per foot (1.2 ° )
OR if the vent pipe is sloped toward the water
heater (as some local codes require), that a
condensate collector is installed to allow
condensa on to drain away from the water
heater to a proper drain source.
□
Verify that condensate will not be allowed to
drain back into the water heater.
□
Verify that the vent system does not exceed the
maximum length for the number of elbows used.
INFORMATION
•
A condensate trap is available, P/N 222053.
•
Regions of cold climate will create more
condensate in the vent system. The condensate
collector should be used in cold climates.
•
The condensate drain pipe should be as short as
possible and have a downward pitch.