beautypg.com

Vertical installation, Initial installation, Qualified installers only v – Enviro Ascot 50-029 User Manual

Page 17

background image

17

STEP 4. Assemble the desired lengths of black

pipe and elbows necessary to reach from

the appliance adapter up through the

Round Support Box. Insure that all pipe

and elbow connections are in their fully

twist-locked position.

STEP 5. Cut hole in the roof centered on the

small hole placed in the roof from Step

2. The hole should be of sufficient size

to meet minimum requirements for

Clearance to Combustibles, as specified.

Continue to assemble lengths of pipe

and elbows necessary to reach from the

ceiling support box up through the roof

line. Galvanized pipe and elbows may

be utilized in the attic, as well as above

the roof line. The galvanized finish is

desirable above the roof line, due to the

higher corrosion resistance.

Initial Installation

QUALIFIED INSTALLERS ONLY

V

ERTICAL

I

NSTALLATION

:

STEP 1. Check the instructions for required clearances (air spaces) to combustibles when passing

through ceilings, walls, roofs, enclosures, attic rafters, or other nearby combustible surfaces. Do

not pack air spaces with insulation.

STEP 2. Set the gas appliance in the 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 this point. Next, drop a plumb bob from the roof to the hole previously drilled

Figure 19: Wall Framing Hole for Vertical Installation.

in the ceiling, 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, to avoid

cutting load bearing members.

STEP 3. To install the Round Support Box/Wall Thimble

in a flat ceiling, cut a 10 inch (25.4 cm) square

hole in the ceiling, centered in the hole drilled

in Step 2. Frame the hole as shown in Figure

19.

Vertical

Vent Cap

Roof

Truss

Insulation

Insulation

Guard

Ceiling

Rafter

Support

Collar

Storm

Collar

Roof Flashing

15 feet (4.57m)

Maximum

Vertical

Venting

Interior Wall

Surface

Insulation

Minimum

Clearance to

Combustibles

Exterior

Wall Surface

If installed

on a carpeted

surfacea hearth

is required

Figure 20: Vertical Installation.