Regency U39-LP1, U39-NG1 installation manual Cathedral Ceilings, Offset Chart

INSTALLATION

4)Assemble the desired lengths of black pipe and elbows necessary to reach from the appliance adaptor up though the Round Support Box. Insure that all pipes and elbow connections are in the fully twist-locked position and sealed.

5)Cut a hole in the roof centred 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". Slip the fl ashing under the shingles (shingles should overlap half the fl ashing) as per diagram 11.

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

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.

Offset Chart

Diagram 11: 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 avoidexcessivestressontheelbows, and possible separation. Wall straps are available for this purpose. See diagram 7.

Galvanized pipe and elbows may be utilized in the attic as well as above the roofl ine. The galvanized fi nish is desirable above the roofl ine due to its higher corrosion resistance.

Continue to add pipe sections through the flashinguntiltheheightoftheventcapmeets the minimum height requirements specifi ed in diagram 12 or local codes. Note that for steep roof pitches, the vertical height must be increased. Apoor draft, or down drafting can result from high wind conditions near big trees or adjoining roof lines, in these cases, increasing the vent height may solve the problem.

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

Notes:

a)For multistorey vertical installations, a Ceiling Fire stop (Part # 963) is required at the second fl oor, and any subsequent fl oor. Diagram 13. The opening should be framed to 10 " x 10" inside dimensions, in the same manner as shown in diagram 10.

b)Any occupied areas above the fi rst fl oor, including closets and storage spaces, through which the vertical vent passes, must be enclosed.

CATHEDRAL CEILINGS

Round Support (RDS) & Square Support (SQS)

If your home has a cathedral ceiling (no attic space between the ceiling and the roof), install the chimney and support as follows.

1)Situate the chimney in a convenient location as near as possible to the appliance outlet. Cut and frame a hole in the roof for the support. The sides of this hole must be vertical with 1 1/4" clearance.

2)Place the support in the opening. Lower it to the correct height as determined by the table and diagram below.

Slope		"X"
0/12	- 2/12	4"
2/12	- 7/12	5-1/2"

Diagram 13

Diagram 12

7/12 - 12/12	6-3/4"
12/12 - 24/12	7-1/2"
24/12+	12-1/2"

20 Regency® U39 ULTIMATE Direct Vent Freestanding Gas Stove