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ECHO
Planning Your Vent Installation
This type of direct vent system may terminate in
one of two ways: Vertical termination using a vent
cap, or Horizontally using a wall termination. There
are limitations to the vertical and/or horizontal
lengths (see Figure 15 for venting charts).
When calculating the length of the vent pipe from
the outlet of the appliance to termination, allowing
for ceiling thickness, the vertical rise in the attic or
second story and sufficient vertical height above the
roof.
Fire stops are required at each floor level the vent
passes through.
When carrying out vertical installations that require
45° elbows add additional pipe to allow for the
offset (see Figure 7 for 45° off set table).
Vent Restriction
Due to the extra flow produced by certain venting
configurations vent restriction may be required to
maintain performance (see Figure 25 and Figure 26).
Duravent GS System
Duravent vent systems use twist lock connections.
The adaptor attached to the unit may be used to
connect either system. Assemble the vent system
using the desired combination of sections and
fittings required for your particular installation.
While assembling the pipe ensure the best visual
appearance by keeping seams oriented toward the
wall or ceiling where possible.
Twist the mating section all the way to make a solid
connection.
NOTE: As this system is a sealed system RTV
sealing compound must be used to seal the metal to
metal joint.
The female section of the pipe/fitting has four
indentations evenly spaced around the pipe. These
indentations are designed to slide over the male
section of the pipe and locate into the four entry
slots of the male section of pipe, than twist the
female section clockwise a quarter turn to fully lock
the sections together. Apply a bead of RTV high
temperature sealant to both the 4" exhaust and 7"
intake section of the male pipe.
Horizontal Wall Vent Termination
The position of the horizontal vent termination must
be positioned in such a way as to meet all local
building codes.
Attach the correct length of vertical section pipe and
an elbow fitting to the stove.
Mark the center line of the pipe facing the wall
(allowing for a 1/4" rise per foot of horizontal,
example 10 foot of horizontal would require a rise
of 2.5").
NOTE:
Allowing the vent pipe to slope down
toward the vent termination could cause poor
combustion and/or high temperatures that may
present a fire hazard.
15
DIRECT VENT GAS HEATER
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