Empire P)-1 Owner's Manual download pdf (Page 13)

29209-0-0911 Page 13

VerticalThroughtheRoofApplications

The Gas Fireplace Insert has been approved for:

a) Vertical installations up to 35 feet in height (top of insert to

cap).

b) Two sets of 45 degree elbow offsets (bends in exvent) within

the vertical installation. From 0 to a maximum of 8 ft. of vent

pipe can be used between elbows.

c) Wall straps must be used to support offset pipe every 4'.

This application will require that you rst determine the roof pitch

and use the appropriate venting components.

GeneralMaintenance

Conduct an inspection of the venting system semi-annually.

Recommended areas to inspect are as follows:

1. Check areas of the venting system which are exposed to the

elements for corrosion. These will appear as rust spots or

streaks and, in extreme cases, holes. These components should

immediately be replaced.

2. Remove the cap and shine a ashlight down the vent. Remove

any bird nests or other foreign material.

3. Check for evidence of excessive condensate, such as water

droplets forming in the ex venting and subsequently dripping

out at joints or seams. Condensate can cause corrosion of caps,

pipe and ttings. It may be caused by having excessive lateral

runs, or having exterior portions of the system exposed to cold

weather.

4. Inspect joints to verify that no pipe sections or ttings have been

disturbed and, consequently, loosened. Also, check mechanical

supports, such as wall straps or plumbers’ tape for rigidity.

Tall Vent Heights

In some circumstances when venting vertically (20 to 30 feet), it

may require that the ue bafe vent door be opened to improve

performance. It is especially important during initial cold start-ups.

To adjust, rotate the vent door enough to encourage better draft for

improved combustion.

FIREBOX

BAFFLE

FLUE

BAFFLE

VENT

Figure 11

DeterminingMinimumVentHeightAbovetheRoof.

WARNING

MajorU.S.buildingcodesspecifyminimumchimneyand/or

ventheightabovetherooftop.Theseminimumheightsare

necessaryintheinterestofsafety.Thesespecicationsare

summarizedinFigure9.

Figure9

Note that for steep roof pitches, the vent height must be increased.

In high wind conditions, nearby trees, adjoining roof lines, steep

pitched roofs, and other similar factors can result in poor draft, or

down-drafting. In these cases, increasing the vent height may solve

this problem.

When terminating the vent cap near an exterior wall or overhang,

maintain minimum clearances as shown in Figure 10.

ROOF PITCH H (Min.)

Flat to 6/12 12" (305 mm)

6/12 to 7/12 15" (381 mm)

Over 7/12 to 8/12 18" (457 mm)

Over 8/12 to 16/12 24" (610 mm)

Over 16/12 to 21/12 36" (914 mm)

VERTICAL TERMINATION

Figure 10

MIN.

12"

MIN.

24"

MIN.

1 2 ... 8 9 10 11 12 13 14 15 16 17 18 ... 35 36

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Empire P)-1 Owner's Manual Page 13

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