Maintenance. DuraVent Type B

for example), the halogenated compounds get into the combustion air. When they are burned, they form compounds that cause corrosion. The corrective action in this case, is to isolate the appliance, and get the air supply from outside, or an uncontaminated area.

(b) condensate may be caused by incorrect sizing of the vent system. Follow the procedures in the various sizing publications to obtain the correct sizes for connectors and vents. Other causes are: excessive lateral runs, too many elbows, cold attics and crawl spaces, and large areas of the exterior portions of the venting system exposed to cold weather. as a general rule, laterals should be held to a minimum, and be no longer than

75% of the vertical height of the system. condensate may initially appear as beads on the outside of the connector or vent.

7. Construction. Laterals, offsets, and vertical components should be securely supported with wall straps, as previously described. components of the vent which are in occupied areas should be enclosed to prevent accidental contact and damage to the vent system. Ensure that insulation, building materials, or debris do not extend into the required clearance spaces. In cold climates, the exterior portions of the vent should be enclosed in a chase. Outside portions of the vent system with may be painted with high temperature paint to help prevent rusting and corrosion on the exterior surfaces.

MAINTENANCE

1. an annual inspection is required to maintain warranty of your DuraVent B-Vent system. you will need to inspect the cap, Vent pipe, connector pipe, and the connection to the appliance.

2. Verify that the sealant around the Flashing and Storm collar is intact. Reseal as needed.

Remove cap. Hold cap by the collar only, and unlock by twisting counterclockwise, and then pull up. Grabbing the cap by the outer edge or top can cause damage to the cap.

3. Inspect cap for any physical damage or damage from corrosion. Look for any foreign material inside the cap or vent. (Example: bird’s nest, leaves, etc.)

4. Shine a light down inside of the vent pipe.

Look for any evidence of damage, corrosion or excessive condensation. also, look for any disconnected sections of the vent pipe or connector pipe. Refer to the installation instructions to reconnect pipe sections. If pipe sections are damaged or corroded, replace immediately!

5. Replace cap by grabbing cap (by collar only), and slide onto pipe section and twistlocking (clockwise).

6. Inspect appliance connector and make sure that the vent is securely connected to the appliance.

7. Damaged or corroded parts should be replaced immediately! Failure to do so can lead to an extremely hazardous situation!

8. Follow your appliance manufacturer’s recommended instructions for inspection your appliance.

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