Installation & Operation Manual

8 Condensate disposal

Condensate drain

1.The Crest is a high efficiency appliance that produces condensate.

2.The rear of the boiler has a 1 inch (25.4 mm) stainless steel drain fitting and a 3/8 inch (9.8 mm) stainless steel vent line for connection to the condensate trap.

3.Connect the 1 inch (25.4 mm) fitting to the 1 inch (25.4

mm)fitting on the condensate trap with the factory supplied silicone hose. Secure the hose to the condensate trap and the boiler using the factory supplied hose clamps.

4.Connect the 3/8 inch (9.8 mm) fitting to the 3/8 inch (9.8

mm)fitting on the condensate trap (shipped loose) with the factory supplied silicone hose. Secure the hose to the condensate trap and the boiler using the factory supplied hose clamps.

5.The condensate trap must be installed at the same level or below the boiler base.

6.The condensate trap is sized for a 1" PVC outlet connection pipe.

7.Plug the wiring connection from the condensate trap into the connector located on the back of the unit.

8.Slope condensate tubing down and away from the boiler into a drain or condensate neutralizing filter. Condensate from the Crest will be slightly acidic (typically with a pH from 3 to 5). Install a neutralizing filter if required by local codes.

A neutralizer kit (FIG. 8-1) is available from the factory (KIT30097). The neutralizer kit must be placed on a surface that is a minimum of 3 inches lower than the condensate trap with field supplied piping (vacuum break) installed between the condensate trap and the neutralizer kit.

9. Do not expose condensate line to freezing temperatures.

NOTICE

Use materials approved by the authority

having jurisdiction. In the absence of

 

 

other authority, PVC and CPVC pipe

 

must comply with ASTM D1785 or D2845.

 

Cement and primer must comply with

 

ASME D2564 or F493. For Canada use

 

CSA or ULC certified PVC or CPVC pipe,

 

fittings, and cement.

NOTICE

To allow for proper drainage on large

horizontal runs, a second line vent may

 

 

be required and tubing size may need to

 

increase to 1 inch (25 mm).

 

The condensate line must remain

 

unobstructed, allowing free flow of

 

condensate. If condensate is allowed to

 

freeze in the line or if the line is obstructed

 

in any other manner, condensate can exit

 

from the boiler tee, resulting in potential

 

water damage to property.

10.A condensate removal pump is required if boiler is below the drain. When installing a condensate pump, select one approved for use with condensing boilers and furnaces. The pump should have an overflow switch to prevent property damage from condensate spillage. The switch should be wired to the auxiliary device proving switch terminals on the low voltage connection board.

Figure 8-1Condensate Disposal

VACUUM

BREAK

DETAIL

FLOOR DRAIN

OR DRAIN PAN

IMG00174

NEUTRALIZER KIT

CONDENSATE TRAP

SAME LEVEL OR BELOW

(OPTIONAL)

BOILER BASE

3” MINIMUM BELOW

 

CONDENSATE TRAP

 

39

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Lochinvar 3.5, 2.5 service manual Condensate disposal, Condensate drain
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3, 2, 3.5, 2.5 specifications

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