2
Maintenance schedule
(continued)
7
Figure 2-1 Condensate Trap
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
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. Call your
qualified service technician to inspect
the boiler and system.
Figure 2-2 Condensate Disposal
FRONT VIEW
REAR VIEW
DIR #2000507911 00
TO FLOOR DRAIN
OR NEUTRALIZER KIT
1/2” PVC / CPVC CONNECTION
FROM CONDENSATE
VENT ON BOILER
FROM CONDENSATE
DRAIN ON BOILER
DIR #2000507910 00
1/2” PVC UNION
(FIELD PROVIDED)
1/2” PVC TEE (RECOMMENDED)
(FIELD SUPPLIED
NEUTRALIZER KIT
FLOOR DRAIN OR
DRAIN PAN
User’s Information Manual
Condensate drain
1. The Knight Fire Tube boiler is a high efficiency appliance
that produces condensate.
2. The condensate trap has a 1/2" outlet connection pipe for
tubing.
3. Slope condensate tubing down and away from the
boiler into a drain or condensate neutralizing filter.
Condensate from the Knight Fire Tube 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 (#100157721 / Kit 3087) is available
from the factory (FIG. 2-2).
4. Do not expose condensate line to freezing temperatures.
5. 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. 2-1).
