York DFAA, DFAH Secure Roof Jack to Roof, Complete Installation, as required, Interior Extension

107272-UIM-B-1105

Do not exceed the maximum adjustable height as listed in Table 9. These maximum heights allow an additional 1 1/2” (3.81 cm) travel before the flue pipe assembly is fully extended against the built-in stop. This provides an additional safeguard against the flue assem- bly being pulled from the roof jack if upward movement should occur when the home is being transported or subjected to other stress conditions. Failure to follow these instructions may result in fire, explosion, or asphyxiation.

TABLE 9: Roof Jack Options

Roof Jack	Adjustable Height with		Adjustable Height with a
	no Interior Extension		17” Interior Extension
Part Number
	IN	CM	IN	CM
4000B7141	14” to 78”	35.6 to 198.1	64” to 95”	162.6 to 241.3
4000B7151	66” to 90”	165.1 to 228.6	83” to 107”	210.8 to 271.8
4000B8161	59” to 79”	149.9 to 200.7	76” to 96”	193.0 to 243.8
4000B8181	73” to 103”	185.4 to 261.6	90” to 110”	228.6 to 279.4

Models 4000B8161 and 4000B8181 have removable crowns.

Use 1/2” (1.27 cm) blunt or sharp end sheet metal screws to fasten roof jack combustion air pipe to furnace combustion air collar. Screw holes are provided in pipe and collar. Excessively long screws may extend to flue pipe and puncture it. If substitute screws are used, they must not exceed 1 1/2” (3.81 cm) in length. It is man- datory that the combustion air and flue tube assembly be properly engaged, and the combustion air pipe fastened to the furnace with sheet metal screws in the holes provided.

If using an optional interior extension, place extension down on furnace top and mate with furnace flue and combustion air collar until it lines up with screw holes in combustion air collar. Secure the extension to the furnace using the pre-punched holes. Use 1/2” (1.27 cm) blunt or sharp end sheet metal screws to fasten roof jack combustion air pipe to fur- nace combustion air collar. Screw holes are provided in pipe and collar. Excessively long screws may extend to flue pipe and puncture. it. If substitute screws are used. they must not exceed 1 1/2” (3.8a cm) in length. Pull the roof jack flue and combustion air pipe assembly down and mate with extension flue and combustion air pipes until the screw holes line up. See Figure 29. Fasten interior extension to combustion air pipe assembly with sheet metal screws not exceeding 1 1/2” (3.8 cm) in length.

IMPORTANT: Under no circumstances shall the connection between the flue and combustion air pipe assembly of the roof jack and the inte- rior extension be above the ceiling line.

Secure the roof jack to the roof with screws. Non-hardening mastic sealer or caulking compound must be used to seal the roof flange to prevent water leakage. The roof jack swivel joint must also be sealed to prevent water leakage.

Secure Roof Jack to Roof

1.Apply caulk or other sealant to underside of Roof Jack flashing.

2.Locate Roof Jack such that pipes are plumb.

3.Secure Roof Jack flashing with nails, screws or staples.

4.Install roofing material over Roof Jack flashing.

5.Seal Roof Jack swivel joint Chemcaulk 900 sealant. Not required for Roof Jacks with fixed slant flashing.

Complete Installation, as required

1.Install Exterior Roof Jack Extension, if applicable. Refer to installa- tion instructions provided with Exterior Roof Jack Extension. Refer to Figure 32.

2.Install Crown Assembly, if applicable. Refer to installation instruc- tions provided with Crown Assembly. If Crown Assembly is not installed, attach warning tags provided with Roof Jack to: Refer to Figure 32.

Unitary Products Group 17