Regency P121RC Vertical Termination, Set the gas appliance in its desired location. Drop a

Diagram 1

INSTALLATION

Diagram 3

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 # 942) over the vent pipe.

8)Slide the appliance and vent assembly to- wards the wall carefully inserting the vent pipe into the vent cap assembly. It is impor- tant 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. Se- cure 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 (Di- agram 5).

Diagram 4

Diagram 5

VERTICAL

TERMINATION

1)Maintain the 1-1/4" clearances (air spaces) to combustibles when passing through ceilings, walls, roofs, enclosures, attic rafter, or other nearby combustible surfac- es. Do not pack air spaces with insulation. Check pages 17-19 for the maximum vertical rise of the venting system and the maximum horizontal 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 flue 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 venting system. You may wish to relocate

the appliance or to offset, as shown in Dia- gram 2 to avoid cutting load bearing mem- bers.

Diagram 2

Note: Apply sealant "Mill-Pac" to inner pipe and high temperature sili- cone sealant to outer pipe on eve- ry twist-lock joint.

3)A Firestop spacer must be installed in the floor or ceiling of every level. To install the Firestop spacer in a flat ceiling or wall, cut a 10 inch square hole. Frame the hole as shown in Diagram 3 and install the firestop.

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 sufficient size to meet the minimum requirements for clearance to com- bustibles of 1-1/4". Slip the flashing under the shingles (shingles should overlap half the flashing) as per Diagram 4.

Diagram 4: The upper half of the flashing is installed under the roofing 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 impor- tant to support the vent pipe every 3 feet, to avoid excessive stress on the elbows, and possible sep- aration. Wall straps are available for this purpose (Diagram 2).

Galvanized pipe is desirable above the roof- line due to its higher corrosion resistance. Continue to add pipe sections through the flashing until the height of the vent cap meets theminimumheightrequirementsspecifiedin Diagram 5 or local codes. Note that for steep

Diagram 5

Roof Pitch	Minimum Vent Height
	Feet	Meters
flat 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

20 Regency P121-1/P121LC-1/P121RC-1/P131-1 Zero Clearance Direct Vent Gas Fireplace