Instructions / Assembly

Page 11 of 25
Condensate Tube Installation:
¾ The Z-Vent Silicone Tube Kit contains: 3/8in ID tube (various lengths), 1 hose (wire) clamp ½ in, 2 cable ties.
¾ When installing the condensate tube be sure to make a trap by forming a 3 inch (75 mm) diameter loop and secure with
cable tie.
¾ Fill the p-trap loop with water ● Place hose clamp over the end of the tube ● Attach the tube to the spigot of the drain cap
● Using standard pliers pinch the hose clamp and slide towards the tube / spigot connection and release. (See images 15
& 16)
Note:
This tube must be 3/8 inch ID high temperature silicone for at least the first 6 inches (152 mm) for category III systems.
Alternate tubing having a minimum temperature rating of 300˚F ≈ 150˚C may be used on category II & IV systems.
¾ Check the local codes / regulations to determine how the effluent (condensate fluid) is to be drained.
Local regulations may require the use of a neutralizer kit when using a condensate trap. A condensate pump
may also be required. Contact your heating appliance manufacturer or local distributor for a neutralizer kit if
required.
IMPORTANT:
¾ Installer must demonstrate to the resident how to periodically check the p-trap loop(s) during the operating months to
make certain that that it is free flowing and filled with water. This will ensure the flow of condensate and…
a) Prevent the exhaust gases venting through the drain fitting in a positive pressure vent system (Category III / IV).
b) Prevent the suction of mechanical room air through the drain fitting in a negative pressure system (Category II).
Z-flex recommends that a condensate drain of suitable configuration be installed in the venting system
so that any condensate produced in the vent system is allowed to drain from the vent system before
collecting in the appliance.
Image 15 Image 16
Support Systems:
It is recommended to support the venting system with suitable supports every 48 inches or less of horizontal vent run and at the
point of every elbow. Vertical vent runs shall be supported at the base and every 16ft or less of vertical height with a support collar.
It is recommended to use strapping made of similar material to the vent pipe (stainless steel) in order to minimize
galvanic reaction, thereby preventing accelerated corrosion of the support systems (see Illustration 2)
NOTICE
Drain Assembly with p-Trap
(
Double Wall Pi
p
e shown
)
NOTICE
NOTICE
N
OTE: IT MAY BE REQUIRED TO HAVE MORE THAN ONE CONDENSATE DRAIN ON A
LONG VENT RUN IN ORDER TO DRAIN THE CONDENSATE FROM THE SYSTEM AS
QUICKLY AS POSSIBLE
.