Hearth and Home Technologies 4055-187 Installing Vent Pipe, Assemble Vent Sections DVP only

10 Installing Vent Pipe

A. Assemble Vent Sections (DVP only)

Attach Vent to the Firebox Assembly

Note: The end of the pipe sections with the lanced tabs will face toward the appliance.

Attach the first pipe section to the starting collar:

•Lanced pipe end of the starting collar

•Inner pipe over inner collar

•Push the pipe section until all lanced tabs snap in place

•Lightly tug on pipe to confirm it has locked.

Commercial, Multi-family (Multi-level exceeding two stories), or High-Rise Applications

All outer pipe joints must be sealed with high temperature silicone (300º F minimum continuous exposure rating), in- cluding the slip section that connects directly to the hori- zontal termination cap.

•Apply a bead of silicone sealant (300º F minimum continuous exposure rating) inside the female outer pipe joint prior to joining sections. See Figure 10.1

•Only outer pipes must be sealed. All unit collar, pipe, slip section, elbow and cap outer flues shall be sealed in this manner, unless otherwise stated.

WARNING! Risk of Fire/Explosion! DO NOT break silicone seals on slip sections. Use care when removing termination cap from slip pipe. If slip section seals are broken during removal of the termination cap, vent will leak and a fire or explosion could occur.

Assemble Pipe Sections

•See Figure 10.2.

•Start the inner pipe on the lanced end of section A into the flared end of section B.

•Start the outer pipe of section A over the outer pipe of section B.

•Once both vents sections are started, push firmly until all lanced tabs lock into place.

•Lightly tug on the pipe to confirm the tabs have locked. It is acceptable to use screws no longer than 1/2 in. (13 mm) to hold outer pipe sections together. If predrilling holes, DO NOT penetrate inner pipe.

For 90° and 45° elbows that are changing the vent direction from horizontal to vertical, one screw minimum should be put in the outer flue at the horizontal elbow joint to prevent the elbow from rotating. Use screws no longer than 1/2 in. (13 mm). If predrilling screw holes, DO NOT penetrate in- ner pipe.

Figure 10.1 High Temperature Silicone Sealant

	A
			A
			B
	B
Figure 10.2		Figure 10.3

Note: Make sure that the seams are not aligned to prevent unintentional disconnection.

CORRECT

INCORRECT

Figure 10.4 Seams

40 Heatilator • Novus NDV Series • 4055-187 Rev. V • 1/12