Instructions / Assembly

35
WHL-001 REV. 9.3.14
I. CONDENSATE REMOVAL SYSTEM
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 condensing high efficiency water heater 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 heater and to a suitable drain.
If the heater condensate outlet is lower than the drain, you must use a condensate removal. If required by local authorities, a
condensate filter of lime crystals, marble, or phosphate chips will neutralize slightly acidic condensate.
Figure 15 – 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 after 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.
Power to the optional condensate pump is continuous. When the water heater is powered off the condensate pump will remain on. It is
important to remember to turn off the condensate pump when powering down the water heater. Failure to do so could result in property
damage, severe personal injury, or death.
The condensate line must remain unobstructed. If allowed to freeze in the line or obstructed in any other manner, condensate can exit
from the water heater tee, resulting in potential water damage to property. When installing a condensate pump, select one approved for
use with condensing heaters and furnaces. The condensate pump should have an overflow switch to prevent property damage from
spillage. Condensate from the heater will be slightly acidic (pH from 3.2 to 4.5). Install a neutralizing filter if required by local codes.