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│Installation and Operation Manual
Trinity Lx-WH
6.0 CONDENSATE DRAIN
This unit produces liquid condensate in the heat exchanger and venting system as a product of combustion.
Steps must be taken to ensure that condensate does not collect in the venting system; therefore, all exhaust
piping must slope back to the water heater a minimum 1/4" per linear foot of vent. Condensate must be drained
from the unit into a household drain.
Check with your municipality, or local gas company to determine if the disposal of
combustion condensate is permitted in your area (e.g. in the State 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 drain
system (See Figure 6-1 for further details):
DO NOT install condensate lines outside. A frozen or blocked drain will cause the condensate to fill the
combustion chamber. This will 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 disposal system as
condensate is very corrosive and will corrode most metallic drains and sewer pipes.
When a condensate pump is used or required, select a pump that is designed for residential furnaces.
If the combustion chamber has been flooded due to the condensate drain backing up, or
for any other reason, the combustion chamber door must be removed and the inside of
the water heater must be inspected for component damage, e.g. the internal insulation at the front and back of the
chamber. Failure to follow these instructions may result in fire, property damage, serious injury or death.
Drain Vent
Do not block or install piping into
the top branch of the condensate
drain tee.
Drain Pipe
Connection to the bottom of the
condensate drain tee must be made
using 1/2" Schedule 40 PVC pipe.
Secure
using
appropriate
cement. All piping must be below
the level where the condensate
leaves the boiler.
Floor Drain
Check with your local authorities
regarding disposal of condensate
(regulation may require the use of a
neutralizer).
30
Figure 6-1 All Models
Condensate Drain Piping
PVC
Lx – WH Series
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