Installation Instructions

ManualsBrandsSelkirk ManualsHeating & Cooling3" 45° Elbow Model VP Pellet Vent Black

9. A NOTE ABOUT PRODUCTS OF COMBUSTION FROM PELLET BURNING

APPLIANCES

One of the most common, visible products of combustion from many pellet

burning appliances is a fine, powdery dust which may tend to accumulate

near the outlet of the vent and/ or at the joints within the vent. While this

material is believed to be non-combustible, it should not be permitted to

accumulate within the system since significant accumulation could begin to

affect both the vent system’s ability to function properly and the heating

appliance operation. Accordingly it is recommended that the system be

inspected periodically for the build-up and cleaned if necessary. In order to

help minimize the accumulation of this powder within the system, each vent

section is provided with a hi-temperature fiberglass rope gasket within the

annulus of the female end. This gasket helps minimize air movement through

joints, thereby enhancing the draft through the vent system and minimizing

the powder accumulation.

10. USE OF SEALANTS

(OPTIONAL IN U.S.A. MANDATORY IN CANADA)

Model VP has been listed for use with high temperature silicon sealant applied

to the male end and seams of the vent section just prior to installation. This

sealant in conjunction with the rope gasket, further reduces air infiltration,

minimizing accumulation of the powder.

Vent systems incorporating tee sections, 90 degree elbows and/ or tall heights

are most susceptible to the powder accumulation and should be inspected

and cleaned more frequently. Use only high temperature sealants such as

Dow Corning’s Silastic 732 RTV or Firestop sealant, or comparable, rated for

use at a minimum of 450 degrees F (232deg. C).

NOTE: Model VP Elbows are fully adjustable by means of rotating gores

(sections). Once oriented into the desired position apply sealant at the seams

(pivot points) to seal. Use silicone on the external seams and high temperature

silicone on the internal seams.

11. RULES FOR SAFETY DURING INSTALLATION

A. Wear safety glasses when sawing, nailing, or using other power tools.

B. Wear gloves when handling sheet metal parts with sharp edges.

C. Be sure all electrical tools are properly grounded.

D. Be very careful when cutting openings and working in the area where

electrical wiring is located. Wiring should be secured at least 3” away

from the outer surface of any vent section. If wiring must be relocated,

have this done by a qualified electrician.

E. Ladders, where necessary, should be in good condition and set upon a

firm, level surface.

12. VENTING MORE THAN ONE APPLIANCE

In certain instances more than one gas or oil fired appliance may be connected

to the same vent system. Be sure to follow the appliance manufacturer’s

recommendations and local fire and building code requirements if this is

planned. UNDER NO CIRCUMSTANCES should a pellet burning appliance be

connected into the same vent system as any other type of appliance.

13. SUPPORT

Model VP vent system must be securely supported. Lateral runs are to be

supported at least every 5 feet. When offsets are necessary, adequate

support above and below the offset is required. In addition it is recommended

that each offset elbow be secured with a minimum of two sheet metal screws

at the joint. (See “Vent Section Interconnection”). Vertical runs are normally

supported by the combination Ceiling Support/ Firestop Spacers. Short vertical

vents with less than 6 feet of vertical vent below the flashing may be suspended

from the flashing. In such case, the vent may be supported by the storm collar

resting on the top of the flashing, using 1/4” long sheet metal screws to

attach the storm collar to the vent at the appropriate place. Vents supported

only by the flashing must be guyed above or below the roof to withstand

snow and wind loads. All vents extending above the roof more than 5 feet

must be securely guyed or braced.

14. GENERAL INSTALLATION INSTRUCTIONS

VENT SECTION INTERCONNECTION

Each flue gas carrying section of Model VP is designed with a male and

female end coupling. To join sections simply push mating ends together until

the locking tabs engage, preventing them from being pulled apart. If additional

securement is desired, one or more, maximum 1/4” long sheet metal

screwsmay be used at the joints. Being careful not to drill through the stainless

steel inner wall of the vent, first drill a 3/32” hole approximately 3/8” above the

line of the joint. Then install the screw(s). NOTE: Anytime sections of Model

VP are supported only from above, the use of these additional screws is

recommended to prevent unintended disengagement of vent sections.

INSTRUCTIONS FOR INSTALLING VENT

Refer to “Common Cosiderations” section for a list of items that should

be taken into consideration before beginning any installation.

Locate appliance per Manufacturers recommendations, making sure to

maintain specified clearances to combustibles.

Attach Pipe Connector (PC) per section on “Pipe Connector” (See Figs

1-4).

If the vent planning was to include a vertical rise, a Tee Section (TS) can

be used to turn the vent vertical (see Figs 2 & 3). Position tee so that it

is vertical, and the cleanout tee cap is at the bottom. Attach tee to vent.

Connect additional vent sections to route the system out of the building.

See “Adjustable Length” section for situations where a non-standard

length of pipe is necessary.

Refer to “Wall Bracket Support” (WB) section for instructions for providing

support for the vent system (See Fig 3).

For vertical penetrations see section on “Vertical Penetrations” for proper

installation (See Figs 1 & 2).

For Horizontal Wall penetrations, see section on “Wall Thimble” for proper

installation (See Figs 3-4).

If a Tee and Tee Support was included in the planning, see section

entitled “Tee and Tee Support” for proper installation (See Fig 3).

When terminating vertically through the roof, see sections on “Roof

Flashing”, “Storm Collar”, & “Vertical Termination Cap” (See Figs 1-3).

When terminating horizontally through a wall, See section on “Horizontal

Termination Cap” (See Fig 4).

See sections 15 & 16 for installation instructions on painting the product

and maintenance requirements.

COMMON TYPES OF INSTALLATIONS

Figs. 1 through 4 show four common types of installations of the Model VP

vent system. These figures provide a reference for reviewing common

applications for the various system parts.

NOTE: See Table 1 for Minimum Clearances

FIG. 1

Gas or Pellet

Burning

Appliance

Connector (PC, PCB)

FIG. 2

Connector (PC,

PCB)

Vent Section (Optional)

Gas or Pellet

Burning

Appliance

3" Min. Clearance to

Combustibles

Tee w/ Removable Cap (TS)

Trim Plate (TP)

3" Min. Clearance to

Combustibles

3" Min. Clearance

to Combustibles

Ceiling Support/

Firestop Spacer

Storm Collar (SC)

Vent Cap (VC)

Adjustable

Roof Flashing

(AF)

Ceiling Support/

Firestop Spacer

Trim Plate (TP)

3" Min. Clearance

to Combustibles

Adjustable

Roof Flashing

(AF)

Storm Collar (SC)

Vent Cap (VC)

Storm Collar (SC)

Wall Bracket/

Support (WB)

Every 8' Min.

Wall Thimble (WT)

3" Min. Clearance

to Combustibles

Gas or Pellet

Burning

Appliance

Connector (PC, PCB)

Horizontal Clean Out

Tee (TD) (Shown) or

Tee (TS) (Not Shown)

FIG. 3

Tee Support

Brackets (WS)

3" Min. Clearance

to Combustibles

Adjustable

Roof Flashing

(AF)

Vent Cap (VC)

Gas or Pellet

Burning

Appliance

Exterior Shield

(ES) (Optional)

FIG. 4

Horizontal Vent

Termination

Cap (HC)

Connector (PC, P

Wall Thimble (W

Min. 6" Length of

Vent, Plus Cap

COMMON CONSIDERATIONS

The following comments apply to all types of installations.

1. Before beginning any installation, select the desired location for the

appliance, being sure to maintain the appliance manufacturer’s specified

minimum clearances. Try to minimize the amount of work by choosing a

location where framing members in the walls and floors will not interfere with

the intended vent location or the required airspace clearances.

2. Where possible, minimize the length and total number and degree of offsets

in your vent system in order to permit the system to vent optimally. Use of too

many offsets may result in poor draft and may affect the performance of the