Condensate Disposal Condensate Drain - Lochinvar 400 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 (12.7 mm) PVC
union for connection of a 1/2 inch (12.7 mm) 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 XL 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
(KIT3087 for Models 400 - 501 and KIT3046 for Models
601 - 801).
4. Install the 1/2 inch (12.7 mm) PVC tee assembly (shipped
with the unit) as shown in FIG. 9-1.
5. Leave the top of the 1/2 inch (12.7 mm) 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).
Figure 9-1 Condensate Disposal
54
1/2" PVC TEE ASSEMBLY
(FACTORY SUPPLIED)
FLOOR DRAIN OR
DRAIN PAN
Installation & Operation Manual
Use materials approved by the authority
NOTICE
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 (25 mm).
The condensate
unobstructed,
condensate.
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.
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. The switch
should be wired in series with the blocked drain switch
inside the boiler (see FIG. 10-1 on page 56).
1/2" PVC UNION
(FACTORY SUPPLIED)
NEUTRALIZER KIT
KIT3087 shown for illustration purposes.
line must remain
allowing free flow
If condensate is allowed to
of