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4.3 Connecting the Condensate Drain
NOTICE: BOILER DAMAGE, PROPERTY DAMAGE
All condensate must drain and be disposed of according to
local codes.
Do not cap or plug the integrated condensate line. If
prevented from draining, condensate can damage the boiler.
The condensate line must have a negative slope to drain
properly.
Do not run drain outdoors. Freezing of condensate can
cause property damage.
Do not connect the condensate drain line directly to the rain
sewer
Do not connect the condensate drain line with an air
conditioning evaporator coil drain.
Use only corrosion resistant materials for the condensate
drain lines such as PVC pipe or plastic hose.
The end of the condensate drain pipe should be open to the
atmosphere. The end should not be under water or other
substances.
The boiler creates condensation when it operates. This condensation has an acidic
pH of 3-5. Follow all local codes and regulations when disposing of condensate
from the boiler.
Disposal:
Dispose of condensate from the boiler, through a neutralizing agent, and
then into an external drain using an air gap.
NOTICE:
If necessary, a condensate pump can be used when there is
an uphill pipe run and/or a long distance between the boiler
and the disposal point.
NOTICE:
The neutralizing agent must be replaced periodically.
Depletion of the neutralizing agent will vary, based on the
usage rate of the boiler. During the first year of operation,
the neutralizer should be checked every few months for
depletion and replaced as needed.
Singular Combi Boiler - BTC 439003301 B (2021/07)
condensate pump
(if necessary)
air gap
External drain
Figure 13
To connect the condensate drain:
1. Connect a drain line to the boiler.
NOTICE:
Use only corrosion-resistant material for the drain line, such
as PVC or CPVC. Do not reduce the size of this ftting or the
drain line to less than 1/2".
Figure 14
Installation Instructions
neutralizer
NPT 1/2 in.
| 19
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