NTI INSTALLATION MANUALS

Part 6 - Installing the Condensate Drain

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 ow. 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.

CONDENSATE REMOVAL TO FLOOR DRAIN) CONDENSATE PIPING (SUGGESTED SETUP FOR

BOILER

PROVIDED FLEXIBLE CONDENSATE HOSE

LOOSE FITTING 1" X 3/4" PVC CONNECTION FOR VACUUM BREAK AND OVERFLOW EXAMPLE:

PIPE REDUCER - SWEAT

PIPE HANGERS RECOMMENDED BE USED TO SUPPORT

HORIZONTAL PIPING VERTICAL OR

RECOMMENDED

LP-723-A 06/24/20

3/4" PVC PIPE

HORIZONTAL LINES RECOMMENDED

BE INSTALLED WITH A PITCH

OF 1/4" PER FOOT

EXISTING DRAIN

RECOMMENDED CONDENSATE NEUTRALIZER

CONDENSATE PIPING WITH PUMP (SUGGESTED SETUP FOR CONDENSATE

REMOVAL TO OUTSIDE SOURCE)

TO OUTSIDE

OR DRAIN

BOILER

PROVIDED FLEXIBLE CONDENSATE HOSE

EXAMPLE: LOOSE FITING BREAK AND OVERFLOW RECOMMENDED: CONNECTION FOR VACUUM

1" x 3/4" PVC PIPE REDUCER - SWEAT

RECOMMENDED:

NEUTRALIZER CONDENSATE

RECOMMENDED: 3/4" PVC PIPE SWEAT

CONNECTIONS THROUGHOUT

PIPING SUPPORTS RECOMMENDED:

06/24/20 LP-723-B

HORIZONTAL LINES MUST RECOMMENDED: BE INSTALLED WITH A PITCH

554200 LITTLE GIANT CONDENSATE PUMP

OF 1/4" PER FOOT

Figure 58 - Condensate Piping Suggestions

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