Lochinvar 400, 801 service manual 1Condensate Trap, Condensate disposal

Outdoor Knight XL User’s Information Manual

2 Maintenance schedule (continued)

3.Fill with fresh water until the water begins to pour out of the drain.

4.Replace the cap. Press the cap onto the trap until the cap makes contact with the drain.

5.Replace the retaining screw.

The condensate trap (FIG. 2-1) must ￿ WARNING be filled with water during all times

of boiler operation to avoid flue gas emission from the condensate drain line. Failure to fill the trap could result in severe personal injury or death.

Figure 2-1Condensate Trap

RETAINING

SCREW

2” PVC CAP WITH

BLOCKED DRAIN SWITCH

PVC TEE ASSEMBLY (FACTORY SUPPLIED)

CONDENSATE FROM

HEAT EXCHANGER TO FLOOR

DRAIN

Condensate disposal

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. 2-2).

3.Slope condensate tubing down and away from the boiler into a drain or condensate neutralizing filter. Condensate from the Knight XL will be slightly acidic (typically with a pH from 3 to 5). Install a neutralizing filter if required by local codes. Call your qualified service technician to inspect the boiler and system.

A Neutralizer Kit is available from the factory (Kit 3087 for Models 400 - 501 and Kit 30002 for Models 601 - 801). Call your qualified service technician to install.

4.Install the 1/2 inch PVC tee assembly (shipped with the unit) as shown in FIG. 2-2. Call your qualified service technician to inspect the boiler and system.

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

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.
	To allow for proper drainage on large
NOTICE
	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. Call your qualified service technician to inspect the boiler and system.

8.A condensate removal pump is required if the 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. Call your qualified service technician to inspect the boiler and system.

Figure 2 Condensate Disposal

1/2" PVC TEE ASSEMBLY (FACTORY SUPPLIED)

IMG00331

FLOOR DRAIN OR

DRAIN PAN

1/2" PVC UNION (FACTORY SUPPLIED)

NEUTRALIZER KIT

6.Do not expose condensate line to freezing temperatures.

7.Use only plastic tubing or piping as a condensate drain line (FIG. 2-2).

7