1. Work must be performed by a RMGA* Certified technician

• Rocky Mountain Gas Association

2. Plastic piping 

• The plastic pipe venting materials shall be labeled in accordance with the product standards specified by the appliance manufacturer or shall be listed and labeled in accordance with UL 1738.

3. Plastic vent joints 

• Plastic pipe fittings used to vent appliances shall be installed in accordance with the appliance manufacturer's instructions. 

• Shall be listed and labeled in accordance with UL 1738. 

• Where a primer is required, it shall be of a contrasting color. 

4. Termination 

• Shall terminate not less than 12 inches from any opening into the building. 

• The bottom of the vent terminal and the air intake shall be located not less than 12 inches above finished grade level. 

• Shall terminate not less than 3 feet above any forced air inlet located within 10 feet. 

• The flue pipe screen should be installed at the termination of the flue pipe in all installations. 

5. Vent intake to exterior 

• Intake must pull combustion air from outside. Intak should be ran in the shortest possible distance and minimize elbows and fittings.

6. Slope 

• Venting shall sloped to prevent condensation from building up in the vent.

• Install combustion appliance venting in accordance with applicable code (i.e., NFPA 54, NFPA 31, IFGC) and manufacturer specifications 

7. Secure venting 

• Fasten and support to prevent sagging  and bellies in the vent.  

8. Testing 

• Combustion testing