Waterford Appliances T25-NG, T25-LP installation manual Termination

INSTALLATION

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. Bend any remaining portion of the sheet metal strip back towards the vent cap, so it will be concealed by the decorative wall thimble cover. See diagram 3.

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

8)Slide the decorative wall thimble up to the wall surface being careful not to scratch the paint and attach with screws provided. Apply decorative brass or chrome trim if desired. See diagram 4.

Diagram 6

3)To install the Round Support Box/Wall Thim- ble in a flat ceiling, cut a 10 inch square hole in the ceiling centred on the hole drilled in Step 2. Frame the hole as shown in diagram 7.

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. See diagram 4.

Galvanized pipe and elbows may be utilized in the attic as well as above the roofline. The galvanized finish is desirable above the roofline due to its higher corrosion resist- ance.

Continue to add pipe sections through the flashing until the height of the vent cap meets the minimum height requirements specified in diagram 9 or local codes. Note that for steep roof pitches, the vertical height must be increased. A poor 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.

Diagram 4
DURA-VENT VERTICAL
TERMINATION	Diagram 7

1)Maintain the 1-1/4" clearanc- es (air spaces) to combus- tibleswhenpassingthrough ceilings, walls, roofs, enclo- sures, attic rafter, or other nearby combustible surfac- es. Do not pack air spaces with insulation. Check page

16 for the maximum vertical rise of the venting system and the maximum horizontal offset limitations.

2)Set the gas appliance in its desiredlocation.Dropaplumb bob down from the ceiling to the position of the appliance flue exit, and mark the loca- tion where the vent will pen- etrate 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 Diagram 5 framingwillobstructthevent-

ing system. You may wish to relocate the appliance or to offset, as shown in diagram 6 to avoid cutting load bearing members.

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

Note: Apply sealant "Mill-Pac" to inner pipe and high temp sili- cone sealant or "Mill-Pac" to out- er pipe on every joint.

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 com- bustibles of 1-1/4". Slip the flashing under the shingles (shingles should overlap half the flashing) as per diagram 8.

Diagram 8: 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.

Diagram 9
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

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

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 floor, and any subsequent floor. Diagram 10. The opening should be framed to 10 " x 10" inside dimensions, in the same manner as shown in diagram 7.

20 Waterford TARA T25 Direct Vent Freestanding Gas Stove