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30
H. Condensate Removal System
Figure 20 - Installing the Condensate Trap and Pressure Switch
Tubing
NOTE: Check with your local gas company to determine if
combustion condensate disposal is permitted in your area. In
the state of Massachusetts, condensate must be neutralized
before entering a drain.
This boiler is a high efficiency appliance, and therefore produces
condensate: a by-product of the combustion process. A
condensate collection system with an internal float switch
monitors condensate level to prevent it from backing up into the
combustion system.
Condensate from the boiler is slightly acidic with a pH of 3.2
- 4.5. To avoid long term damage to the drainage system and
to meet local code requirements, Westinghouse recommends
neutralizing condensate with a Condensate Neutralizer Kit (Part
# 7350P-611). The neutralizer kit connects to the drain system
and contains limestone chips that neutralize the pH level of the
condensate. The neutralizer kit should be checked annually and
the limestone chips replenished if necessary. When replacing
the limestone chips, take care to ensure chips are no smaller
than ½" to avoid blockage in condensate piping (refer to figure
below for piping of the condensate neutralizer.)
WHL-038 Rev. 1.29.16
Figure 19 - Condensate Piping
NOTES:
1. Condensate line must be pitched at least ¼" per foot to
properly drain. If this cannot be done, or a very long length
of condensate hose is used, increase the condensate line
to a minimum of 1" ID and place a tee in the line before the
condensate neutralizer to properly reduce vacuum lock in the
drain line.
2. PVC or CPVC pipe should be the only material used for
condensate line. Steel, brass, copper, and other metals will be
subject to corrosion or deterioration.
3. A frozen condensate line could result in a blocked vent
condition. It is very important to protect the condensate
line from freezing temperatures or any type of blockage.
In installations that may encounter sustained freezing
conditions, the use of heat tape is recommended to avoid
freezing of the condensate line. It is also recommended to bush
up the condensate line size to 1" and terminate condensate
discharge as close to the unit as possible. Longer condensate
runs are more prone to freezing. Damages due to frozen or
blocked condensate lines ARE NOT covered by warranty.
4. Support of the condensate line may be necessary to avoid
blockage of the condensate flow.
5. To allow proper drainage on longer horizontal condensate
runs, tubing size may need to increase to 1" and a second line
vent may be required.
NOTE: To clean out condensate trap, see Maintenance
section.
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