CarAlarms.com P90-NG1 manual Vertical Terminations, This allows for small adjustments

2)

1) Maintain the 1 - 1/2" clearances (air spaces) to combustibleswhenpassing through ceilings, walls, roofs, enclosures, attic rafter, or other nearby combustible surfaces. Do not pack air spaces with insulation. Check the "Rigid Pipe Venting Systems" & "Rigid Pipe Venting Arrangements" sections for themaximumverticalriseof the venting system and the maximum horizontal offset limitations.

Note:

Apply sealant "Mill-

Pac" to inner pipe

andhightemperature

silicone sealant to

outer pipe on every twist-lock joint.

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 10 inch square hole. Frame the hole as shown in Diagram 3 and install the fi restop.

Diagram 3

Set the gas appliance in its desired location. Dropaplumbbobdownfromtheceilingtothe 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

roof.Determine if ceiling joists, roof rafters or other framing will obstruct the ventingsystem. You may wish to relocate the

appliance or to

offset,asshown

in Diagram 2 to avoid cutting

load bearing Diagram 2 members.

Diagram 1

INSTALLATION

Diagram 5

The four wood screws provided should be replaced with appropriate fasteners for stucco, brick, concrete, or other types of sidings.

VERTICAL

TERMINATIONS

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.

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 1-1/2". Slip the fl ashing under the shingles (shingles should overlap half the fl ashing) as per Diagram 4.

Note: If installing termination on a siding covered wall, a vinyl siding standoff or furring strips must be used to ensure that the termination is not recessed into the siding.

7)Before connecting the horizontal run of vent pipe to the vent termination, slide the Wall Thimble (Part # 620-926) over the vent pipe.

8)Slide the appliance and vent assembly towards the wall carefully inserting the vent pipe into the vent cap assembly. It is important that the vent pipe extends into the vent cap sufficient distance so as to result in a minimum pipe overlap of 1-1/4 inches. Secure the connection between the vent pipe and the vent cap by attaching the two sheet metal strips extending from the vent cap assembly into the outer wall of the vent pipe. Use the two sheet metal screws provided to connect the strips to the pipe section. See Diagram 6.

Diagram 6

9) Install wall thimble in the center of the 10" square and attach with wood screws (Diagram 7).

Diagram 7

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, 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,

Diagram 5

Roof Pitch	Minimum Vent 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

22 Excalibur® P90 Zero Clearance Direct Vent Gas Fireplace