Slant/Fin J-390 Vent and AIR Intake Restrictions, PVC/CPVC Pipe General Assembly Method

Jaguar Model J-390 7

The vent connector on the boiler is designed to directly accom- modate either PVC/CPVC Schedule 40 pipe or the listed stain- less steel vent systems by utilizing an adapter. The adapter has a built-in sealing ring, so no additional sealant is required.

Make sure the pipes are round and burr-free, and push down fully past the sealing ring, until snug. (See Figure 4). Liquid soap may be used to ease insertion.

The air intake collar on the boiler is designed to directly acco- modate PVC/CPVC schedule 40 pipe (See figure 4). A small bead of silicon should be applied between the collar and inside of the air antake pipe, to seal properly.

4" PVC OR CPVC	4" PVC OR CPVC
AIR INTAKE PIPE	VENT PIPE
AIR INTAKE COLLAR

8.For each joint, first apply a coat of primer to the outside sealing surface of the pipe and the inside sealing surface of each fitting. Use only the primer type that is specified for either the PVC or CPVC pipe that is bing utilized.

9.Before the primer dries, apply a coat of cement over it. A second coat of cement can be applied, if necessary, but must be done quickly and in a manner that avoids unnecessary build-up that would cause obstruction inside the system. Use only the cement type that is specified for either the PVC or CPVC pipe that is being utilized.

10.Before the cement dries, insert the pipe into the fitting. A slight twisting motion while pushing the pipe into the fitting will aid in distributing the cement evenly and ensuring the parts fully engage.

11.Quickly wipe the excess cement from the outside areas of the joint. Discard any rags used to avoid later getting the cement on hands, clothes and equipment.

VENT AND AIR INTAKE RESTRICTIONS

1.Maximum allowed equivalent vent and air intake length for all of the approved vent and air intake materials is 100 equivalent feet.

2.Equivalent of vent or air intake length is sum of the straight pipe lengths and equivalent length of elbows. Each 90˚ elbow is equivalent to 10 ft. of 4" pipe.

Figure 4. Vent & Air Intake Pipe installation into Boiler Adapter.

PVC/CPVC PIPE GENERAL ASSEMBLY METHOD

The following are the recommended methods for cutting, cleaning and connecting PVC and CPVC pipe, for both the vent and air intake piping system:

1.When laying out the piping system, work from the boiler vent and air intake adapter to the point of outside termination.

2.Cut the PVC/CPVC pipe to the required lengths, and pre-assemble the entire system, before sealing. Disassembly after sealing, to make any corrections, will not be possible.

3.Once the pre-assembled PVC/CPVC pipe vent and air intake system is verified to be of the proper length pipe and fitting orientation, begin disassembling and preparing the pipes and fittings for the sealing process. This can be done section by section, or the complete vent and air intake system can be disassembled. It is recommended to mark the various parts, before complete disassembly, to eliminate the possibility of errors during re-assembly.

4.De-burr the inside and outside of every PVC/CPVC pipe, to ensure that they engage fully into the fittings, and flow is not compromised. A small chamfer on the outside of each pipe can particularly aid in the final assembly process.

5.Wipe or knock out any debris from inside the PVC or CPVC pipe, which may have accumulated there from the cutting process or storage. Debris can cause operational problems with the boiler combustion components.

6.Thoroughly clean the outside ends of each pipe, and the inside of each fitting. The surfaces must be dry for the sealing agents to work properly. Handle the prepared pipe lengths away from the cleaned ends, and handle the cleaned fittings, from the outside, to avoid contamination.

7.Re-assembly of the PVC or CPVC pipe should be done in sections, to avoid the primer and cement drying before the parts are engaged.

Figure 5.

3.The vent termination is in addition to the allowed equivalent lengths.

4.Minimum vent length is 2 feet of straight pipe, plus one 90˚ elbow.

5.Vent length restriction is for both direct and non-direct vent installations.

EXAMPLE: The combustion air is provided by air intake piping directly to the boiler (direct-vent installation). The vent piping will be PVC and installation location will require the use of 4 elbows for the vent to run the termination. The air intake piping will also be PVC, and also will require the use of 4 elbows.