Regency P48-2 Unit Installation With Vertical Termination, Diagram, Minimum Vent, Feet

INSTALLATION

UNIT INSTALLATION

WITH VERTICAL

TERMINATION

1) Maintain the 1-1/4"

(32mm) clearances (air spaces) to combustibles when passing through ceilings, walls, roofs, enclosures, attic rafter, or other nearby combustible surfaces. Do not pack air spaces with insulation. Check "Venting

Arrangemnt - Vertical
Termination" section for
the maximum vertical
rise of the venting
system and the
maximum horizontal
offset limitations.
2) Set the gas appliance
in its desired location.	Diagram 1
Drop a plumb bob down from the ceiling
to the position of the appliance fl ue exit,
and mark the location where the vent will
penetrate the ceiling. Drill a small hole at his

point. Next, drop a plumb bob from the roof to the hole previously drilled in the ceiling, and mark the spot where the vent

will penetrate the		r o o f .
Determineifceiling
joists,	roof rafters
orotherframingwill
obstructtheventing
system. You may
wish	to relocate
the	appliance
or to	offset, as
shown in Diagram
2 to avoid cutting
load	bearing
members.		Diagram 2

3)A Firestop spacer must be installed in the fl oor or ceiling of every level. To install the Firestop spacer in a fl at ceiling or wall, cut a 11 inch (279mm) square hole. Frame the hole as shown in Diagram 3 and install the fi restop.

Diagram 3

4)Assemble the desired lengths of pipe and elbows. Ensure that all pipes and elbow connections are in the fully twist-locked position and sealed.

NOTE:

For best results and optimum performance with each approved venting system, it is highly recommended to apply “Mill-Pac” sealant(supplied)toeveryinnerpipeconnec- tion. Failure to do so may result in drafting or performance issues not covered under warranty. Silicone (red RTV) is optional.

5)Cut a hole in the roof centered on the small drilled hole placed in the roof in Step 2. The hole should be of sufficient size to meet the minimum requirements for clearance to combustibles of 1-1/4"(32mm). Slip the flashing under the shingles (shingles should overlap half the flashing) as per Diagram 4.

Diagram 4: The upper half of the fl ashing is installed under the roofi ng material and not nailed down until the chimney is installed.

This allows for small adjustments.

6)Continue to assemble pipe lengths.

Note: If an offset is necessary in the attic to avoid obstructions, it is important to support the vent pipe every 3 feet (0.9 meter), to avoid excessive stress on the elbows, and possible separation. Wall straps are available for this purpose

(Diagram 2).

Galvanizedpipeisdesirableabovetheroofline duetoitshighercorrosionresistance.Continue to add pipe sections through the flashing until the height of the vent cap meets the minimum height requirements specified in Diagram 5 or local codes. Note that for steep roof pitches, the vertical height must be increased.

Diagram 5

	Minimum Vent
Roof Pitch		Height
	Feet		Meters
fl at to 7/12	2		0.61
over 7/12 to 8/12	2		0.61
over 8/12 to 9/12	2		0.61
over 9/12 to 10/12	2.5		0.76
over 10/12 to 11/12	3.25		0.99
over 11/12 to 12/12	4		1.22
over 12/12 to 14/12	5		1.52
over 14/12 to 16/12	6		1.83
over 16/12 to 18/12	7		2.13
over 18/12 to 20/12	7.5		2.29
over 20/12 to 21/12	8		2.44

A poor draft, or down drafting can result from highwindconditionsnearbigtreesoradjoining roof lines, in these cases, increasing the vent height may solve the problem.

7)Ensure vent is vertical and secure the base of the fl ashing to the roof with roofi ng rails, slide storm collar over the pipe section and seal with a mastic.

8)Install the vertical termination cap by twist- locking it.

Note: Any closets or storage spaces, which the vent passes through must be enclosed.

24 Regency® P48-2 Zero Clearance Direct Vent Gas Fireplace