VENTING INSTRUCTIONS
27
For vent pipe installation refer to the vent pipe manufacturers instructions.
Condensate drain is plumbed with 3/8" (1 cm) inside diameter flexible tubing. (See
Figure 4
) Refer to "GENERAL INSTRUC-
TION FOR SEASONAL STARTUP AND MAINTENANCE", in the Installation Manual for maintenance recommendations and
schedule.
Flexible Tubing Condensate Drain.
1.
In the vent, and close to the appliance, install a tee with a run outlet. Install con-
densate drain in the down outlet with high temperature adhesive. (See
Figure 4
) Connect the condensate drain outlet to
commercially available flexible tubing (minimum length 40" (102 cm)). Below the drain outlet, make a 6" (15.2 cm) diameter
loop in 3/8" (1 cm) ID tubing, or a 9" (22.9 cm) diameter loop in 5/8" (1.6 cm) ID tubing. Secure the loop with a plastic cable
tie. Run the other end of the flexible tubing to a sanitary drain (Use a condensate pump if necessary). Fill loop with water
before firing the boiler.
THIMBLE
VENT PIPE
CONDENSATE
DRAIN
TERMINATION TEE
CONDENSATE TRAP ASSY
NOTE: REFER TO “VENT
PIPE LENGTHS” FOR
USAGE.
VENT
12" (30.5 cm) MINIMUM
TEE
Figure 6 - Vent System For All Models
Figure 8 - UNACCEPTABLE
Figure 7 - RECOMMENDED
CONDENSATE DRAINS
NOTICE
Condensate Drains are only needed when horizontal
vent lengths exceed 10 feet
!
WARNING
Do not place condensate drain where freezing may
occur. Condensate drains are required in the vent
when using the condensate tee. The condensate drain
fitting must be plumbed to a sanitary drain for liquid
condensate disposal.
National Excelsior Company
www.excelsiorhvac.com
Subject to change without notice.
