Ao-smith 315795-000 MH User Manual download pdf (Page 11)

ROOF JACK INSTALLATION

ROOF JACK KIT MODELS VENT KIT- 12 INCH (30.48 cm) 9002964005, VENT KIT - 32 INCH (81.28 cm) 9002965005,

VENT KIT - 60 INCH (152.40 cm) 9002966005 AND VENT KIT - 95 INCH (241.30 cm) 9002967005

FIGURE 13.

1. Cut 5 1/2” (13.97 cm) diameter holes through the roof and ceiling

directly in line with the ﬂ ue connection on top of the water heater.

For a sloped roof, the roof hole may have to be enlarged to allow

the roof jack to be installed vertically.

2. Telescope down the ﬂ ue pipe in the roof jack assembly to a length

that will project at least 6 inches (15 cm) below the ﬁ nished ceiling

before installing the roof jack assembly.

NOTE: Flue pipe joints have silicone seals that must remain in place.

A soapy water solution sprayed around the seal area will enable the

ﬂ ue pipe and outer pipe below to telescope more freely.

3. Telescope down the outer pipe of the roof jack assembly to a length

that will project at least 2” (5.08 cm) below the ﬁ nished ceiling

before installing the roof jack assembly, see Figure 14.

FIGURE 14.

4. Ease the roof jack assembly through the roof and ceiling openings.

The roof jack ﬂ ashing tilts up to 22.6° degrees for use on a sloping

roof.

5. Use sealant or caulk on the roof to seal under ﬂ ashing of the roof

jack assembly. Use roof nails or screws on wood construction or

sheet metal screws on metal roofs (nails and screws not provided),

see Figure 15.

FIGURE 15.

NOTE: An optional Roof jack Extension Pipe (9002588) is required

when the roof pitch is 5 1/2” (13.97 cm) or greater, or where local

codes require the roof jack cap (outlet) terminate above the peak of

the roof.

6. Remove the paper backing from the 1 1/2” x 9 3/4” (3.81 cm x 24.77

cm) woven tape seal (found attached to the heater top) and apply

the seal around the ﬂ ue collar of the water heater, see Figure 16

on page 12.

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Ao-smith 315795-000 MH User Manual Page 11