Regency P121LC Vertical Terminations, Diagram Diagram, This allows for small adjustments

INSTALLATION

Diagram 3

7)Before connecting the horizontal run of vent pipe to the vent termination, slide the Wall Thimble (Part # 942) 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 suffi cient 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 4.

9)Install wall thimble in the center of the 10" square and attach with wood screws (Diagram 5).

Diagram 4

Diagram 5

VERTICAL

TERMINATIONS

1) Maintain the 1-1/4" 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 the "Venting Arrangement" section for the maximumverticalriseoftheventing systemandthemaximumhorizontal offset limitations.

2)Set the gas appliance in its desired location. Drop a

plumb bob down from the ceiling to the position of

the appliance fl ue exit, and Diagram 1 markthelocationwherethe

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

venting system. You may wish

to relocate the appliance or to offset, as shown

in Diagram 2 to avoid cutting

load bearing members.

Diagram 2

Note: Apply sealant "Mill-Pac" to inner pipe and high temperature 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

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 suffi cient size to meet the minimum requirements for clearance to combustibles of 1-1/4". Slip the fl ashing under the shingles (shingles should overlap half the fl ashing) 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, 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

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 Regency® P121-2/P121LC-2/P121RC-2/P131-2 Zero Clearance Direct Vent Gas Fireplace