Operating instructions
2 Maintenance schedule (continued)
7
Clean/Inspect Trap Assembly
Remove the clean out cap on the bottom of the trap. Let the 
condensate and any debris drain out.
 WARNING
Figure 2-1 Condensate Trap
Condensate disposal
1.  This boiler is a high efficiency appliance that produces 
condensate.
2.  The bottom of the boiler has a 3/4 inch pipe for 
connection of a 3/4 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 Cadet 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 is available from the factory 
(KIT3087).
4.  Do not expose condensate line to freezing temperatures.
5.  Use only plastic tubing or piping as a condensate drain 
line (FIG. 2-2).
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.
6.  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. 
 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
The condensate trap (FIG. 2-1) must have 
the float ball in place during all times of 
boiler operation to avoid flue gas emission 
from the condensate drain line. Failure to 
ensure the float ball is in place could result in 
severe personal injury or death.
CONDENSATE
DRAIN
REMOVABLE CAP TO
CLEAN OUT TRAP
HOSE BARB
FLOAT BALL
IMG00249
MOUNTING NUT
CONDENSATE TRAP
REMOVABLE CAP
FOR CLEANING TRAP
CONDENSATE DRAIN CONNECTION -
ROUTE TO FLOOR DRAIN OR
NEUTRALIZING FILTER USING:
3/4" PVC PIPE & FITTINGS or
3/4" CPVC PIPE & FITTINGS 
(FIELD SUPPLIED)
IMG00248
 User’s Information Manual










