Initial Installation
QUALIFIED INSTALLERS ONLY
Vent Configurations and Restrictor Settings:
Figures 23 & 24 show the range of venting options, they show possible vent configurations if the unit is top vented (see Figure 23) or rear vented (see Figure 24), for vertical and horizontal terminations, any layout that remains within the shaded area is acceptable. Having the fewest number of elbows is ideal, as they tend to disrupt air movement. Using 45˚ elbows is preferable to using 90˚ elbows. Also, a shorter vent system will perform better than a longer one.
The ENVIRO WESTPORT has been designed with a built in restrictor |
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plate. The restrictor is designed to enhance flame appearance when |
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installing this unit with vertical chimneys as well as installations with | View showing fully | ||
longer horizontal vent applications. It does this by controlling the | closed restrictor plate | ||
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amount of air moving through the vent pipe. |
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| 1 |
5 | 4 | 32 | |
Figure 23 shows the vent restrictor position required, relative to the | View showing fully | ||
length of vent pipe. Longer vertical vent lengths necessitate greater | open restrictor plate | ||
restriction; position 1 is open and position 5 is maximum restriction |
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| 32 |
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| 1 |
(refer to Figure 22). To avoid injury, it is best to make this adjustment | 5 | 4 |
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when the fireplace is cool or use welder’s gloves or oven mitts. | Figure 22: Restrictor plate settings. | ||
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Note: 0,0 in Figures 23 & 24 represent the outlet of the flue collar elbow.
To access vent restrictor remove the valve cover plate from the right rear corner of the unit by undoing the two fastening screws.
Loosen the ¼” hex head screw and adjust to the correct setting.
Slide the hex head screw to the next setting and
The numbers in this chart represent the actual vent restrictor settings. Although the numbers do not appear on the unit use this as a guide to follow.
Wait for unit to warm up to operating temperature to ensure proper and clean burning unit.
Figure 23. Possible Vent Configurations for Top Vented; | Figure 24. Possible Vent Configurations for Rear |
Vertical and Horizontal Terminations. | Vented; Vertical and Horizontal Terminations. |
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