Lochinvar 80 - 285 User Manual download pdf (Page 50)

Installation & Operation Manual

9 Condensate disposal

Condensate drain

1. This boiler is a high efficiency appliance that produces

condensate.

2. The side of the boiler has a 1/2 inch PVC union for

connection of a 1/2 inch PVC pipe (FIG. 9-1).

3. Slope condensate tubing down and away from the boiler

into a drain or condensate neutralizing filter. Condensate

from the Knight boiler 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. 9-1) is available from the factory

(Kit 3087).

4. Install the 1/2 inch PVC tee assembly (shipped with the

unit) as shown in FIG. 9-1.

5. Leave the top of the 1/2 inch tee OPEN. This is needed as

a vacuum break.

6. Do not expose condensate line to freezing temperatures.

7. Use only plastic tubing or piping as a condensate drain

line (FIG. 9-1).

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.

8. A condensate removal pump is required if boiler is below

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.

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.

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.

Figure 9-1 Condensate Disposal

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Lochinvar 80 - 285 User Manual Page 50

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