Part 6 - Installing The Condensate Drain - Westinghouse WBRC 140 Series Installation, Start-Up, Maintenance, Parts, Warranty

38

Part 6 - Installing the Condensate Drain

CAUTION
This condensing high efficiency boiler has a condensate removal
system. Condensate is water vapor derived from combustion
products, similar to that produced by an automobile when it is
initially started. It is very important that the condensate line is sloped
down away from the boiler and to a suitable drain.
The condensate line must remain unobstructed. If allowed to freeze
in the line or obstructed in any other manner, condensate can exit
from the boiler tee, resulting in potential water damage to property.
When installing a condensate pump, select one approved for use
with condensing boilers and furnaces. The condensate pump should
have an overflow switch to prevent property damage from spillage.
Condensate from the boiler will be slightly acidic (pH from 3.2 to
4.5). Check with your local gas company to determine if combustion
condensate disposal is permitted in your area. Install a neutralizing
filter if required by local codes.
NOTES:
1. Due to its efficient design, the boiler produces condensate (water)
as a normal by-product. This condensate is acidic, with a pH level
between 3 and 4. This condensate must be drained away from the
boiler and disposed in accordance with all local regulations.
2. 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 after the condensate neutralizer to properly reduce
vacuum lock in the drain line.
3. Use corrosion-resistant materials to drain condensate. Use the
included flexible plastic hose or ½" PVC and CPVC drain pipe complying
with ASTM D1785, F441, or D2665 may be used. Cement must comply
with ASTM D2564 for PVC pipe or F493 for CPVC pipe. For Canadian
applications, use CSA or ULC certified PVC or CPVC pipe, fittings, and
cement.
4. 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.
Figure 29 - Internal Condensate Trap
whl-648 Rev. 001 Rel. 003 Date 10.8.19
5. Support of the condensate
line may be necessary to avoid
blockage of the condensate flow.
6. Local building codes may
require an in-line neutralizer (1)
to be installed (not included) to
treat the condensate. If required
by local authorities, a condensate
filter of lime crystals, marble, or
phosphate chips will neutralize
slightly acidic condensate
(p/n 7450P-212 available from
Westinghouse). Follow
the installation instructions
included with the neutralizer. If
a neutralizer is installed, periodic
replacement of the limestone
(or neutralizing agent) will be
required. The rate of depletion of
the limestone varies with usage
of the boiler. During the first year
of boiler operation, check the
neutralizer every few months for
depletion.
7. Route the drain line to a nearby
floor drain (2), laundry tub (3),
or condensate pump (4). If the
boiler condensate outlet is lower
than the drain, you must use a
condensate removal pump (kit
p/n 554200 available from Westinghouse).
NOTE: If a nearby laundry tub is used as a disposal for waste water
from the washing machine, draining the condensate into this tub
allows the soapy water discharge to neutralize the acidic condensate.
8. An error will appear on the boiler display if condensate line is
blocked. The boiler will not operate with a blocked condensate
line. It is extremely important to have this condition repaired by a
qualified service technician.
all
Figure 28 - Internal Condensate
Trap
Condensate Adapter
(Floor Models)
Figure 30 - Condensate Adapter
(Floor Models)