Installation Guide

ManualsBrandsMetalbest ManualsHVACDirect-Temp 4" x 6-5/8" Direct Vent 14" Rise Snorkel Termination Cap

LISTED

CUS

4”

5”

8-3/4” x 8-3/4”

10-5/8” x 10-5/8” 8-3/4” x 8-3/4”

10-1/8” x 10-1/8” 14-1/2” x 14-1/2” 10-1/8” x 10-1/8”

DIRECT-TEMP®

METALBEST DIRECT VENT

SYSTEM

Selkirk MetalBest DIRECT-TEMP Direct Vent system is

designed for use only with direct vent gas fired appliances

certified for use with DIRECT-TEMP, in accordance with

applicable ANSI and/or CSA gas appliance standards.

DIRECT-TEMP is listed by UL and Warnock Hersey/ITS for use

in Direct Vent Gas Appliance Systems.

CAUTION - Do not begin installing this product until you have

thoroughly read the appliance and vent system installation

instructions. Failure to comply with these instructions may lead

to hazardous conditions. Never substitute any part of the

DIRECT-TEMP Direct Vent system with components of other

systems or with any field fabricated parts. Do not modify any

part of this system unless specifically directed to do so in these

instructions. Follow the appliance manufacturers

recommendations for flue gas or intake restrictions. Contact

Local Building or Fire Officials about restrictions and

installation inspection in your area.

GENERAL USE:

Use DIRECT-TEMP only on Direct Vent gas appliances

certified for use with DIRECT-TEMP Direct Vent system.

Joint Connection:

The pipe and elbows are assembled by inserting the outlet

(male) end of a length of pipe or elbow into the inlet (female) end

of an adjacent length of pipe or elbow. Make sure the outlet end

is fully seated within the inlet end of the adjoining section and

the gasket, located on the inner liner of the inlet section is fully

enclosed by the inner liner of the outlet of the

adjoining section. Push in the Lock Tab such that it becomes

seated within the inward groove of the adjoining section. This

locks the joint in place (see Figure 2).

Supporting DIRECT-TEMP: Vertical Support

Vertical Installations can be supported by two methods.

CAUTION: WEAR GLOVES WHILE

HANDLING SHEET METAL PARTS TO

AVOID PERSONAL INJURY. SHARP

EDGES OR PROJECTIONS CAN CUT YOU.

Failure to follow the installation instructions could cause

FIRE, CARBON MONOXIDE POISONING, OR DEATH. If you

are unsure of installation requirements, call the Phone

Number listed on the instructions or sizing handbook.

! WARNING

Framing Dimensions Table 1

Use of Sealant:

It is not required to apply or use sealant on the inner liner of

DIRECT-TEMP. For outer wall joint sealing considerations

follow appliance manufacturer recommendations.

Clearance to Combustibles:

Maintain proper minimum airspace clearances to combustibles

as specified by the Appliance Manufacturer’s instructions. Do

not place anything including any type of insulation in this

required air space.

Appliance Adapter:

The Appliance Adapter (AA) adapts DIRECT-TEMP to most direct

vent appliances incorporating outlet collars configured to receive

most common 4” (ID) by 6-5/8” (OD) or 5” (ID) by 8” (OD) “Twist

Lock” style, direct-vent systems.

The adapter incorporates two indentations on the outer wall of the

inlet end, which are designed to “Twist Lock” into place upon

attachment to the appliance outlet. Align the adapter indentations

with the entry slots of the appliance outlet and slide together. Turn

the adapter clockwise approximately one-quarter turn to lock in

place. The outlet end of the adapter is standard DIRECT-TEMP

construction.

Installing DIRECT-TEMP:

There are two basic types of termination options for Direct Vent

Systems. Vertical Terminations (Fig 1a), and Horizontal

Terminations (Figs 1b and 1c).

Reference the Appliance Manufacturer’s installation

instructions to determine the type and limitations applicable to

the appliance being installed.

Ceiling Support(CS)

Firestop (FS)

Cathedral Ceiling

Support (CCS)

Wall Thimble (WT)

Model DT

Diameter

To install:

1) Determine whether the length of pipe fits the appliance outlet by

attempting to engage the parts. If the parts engage smoothly,

proceed to step 2. If obstructions, interference or loose fit is noted,

contact the appliance manufacturer or Selkirk MetalBest with the

dimensions of the appliance outlet.

2) Slide the length of pipe over the appliance outlet a minimum of

1 1/2” and screw to the appliance outlet collar using a minimum of

two #8 X 1/4” sheet metal screws.

For connection of Direct-Temp to units with 4”x7” flue outlets, the

following methods have been approved:

-Install the Universal/Napoleon Appliance Adapter 4DT-AAN.

-Connect a standard Direct-Temp pipe length (do not use an

adjustable length in this application) a minimum of 1-1/2” over the

flue outlet. The outside of the Direct-Temp Length will fit inside the

flue outlet. Secure with a minimum of two #8x1/4” sheet metal

screws and seal with hi-temp silicone.

For units factory equipped with appliance adapters from other

brands of Direct Vent systems, it is permissible to simply slide a

length of DT pipe over the appliance adapter. Secure with a

minimum of two #8x1/4” sheet metal screws and seal with hi-temp

silicone.

Gasket

Inlet End

Outlet End

To Termination

Lock Tab

To Appliance

FIG. 2 JOINT CONNECTION

FIG. 3 CEILING SUPPORT

Ceiling Support

Collar

Ceiling Support

Plate

Trim Plate

Summary of content (6 pages)

PAGE 1
IN T E R T EK UL ® CM W ar y C no c k He r se US LISTED DIRECT-TEMP® METALBEST DIRECT VENT SYSTEM CAUTION: WEAR GLOVES WHILE HANDLING SHEET METAL PARTS TO AVOID PERSONAL INJURY. SHARP EDGES OR PROJECTIONS CAN CUT YOU. ! WARNING Selkirk MetalBest DIRECT-TEMP Direct Vent system is designed for use only with direct vent gas fired appliances certified for use with DIRECT-TEMP, in accordance with applicable ANSI and/or CSA gas appliance standards.
PAGE 2
Vertical Termination (VT) - OR - Horizontal Termination (HC) (VC) Wall Thimble (WT) (Optional) Storm Collar (SC) Pipe Length Trim Plate (TP) (Required if Wall Thimble is not used) Roof Flashing (AF) Appliance Adapter (AA) Attic Insulation Shield (AIS) Ceiling Support (SC) Trim Plate (TP) FIG 1b Horizontal Termination (HC) Pipe Length Pipe Length Wall Thimble (WT) (Optional) Appliance Adapter (AA) Trim Plate (TP) (Required if Wall Thimble is not used) 90° Elbow (EL90) Pipe Length Appliance Ad
PAGE 3
Supporting DIRECT-TEMP: Horizontal Support Horizontal runs of Direct-Temp should be supported every 4 ft. This can be done with the use of plumbers strapping or the Offset Support. The Wall Thimble also acts as a firestop. At other locations, a Firestop Spacer (FS) should be installed. In the attic the firestop should be placed on top of the joist framing to prevent debris from falling into the joist framing (see Fig. 6).
PAGE 4
Inside Corner Detail V V V V Fixed Closed Operable V Fixed Closed Operable V V V A V V = VENT TERMINAL A 123456 123456 123456 123456 = AREA WHERE TERMINAL IS NOT PERMITTED 123456 123456 = AIR SUPPLY INLET Canadian Installations A 1 US Installations 2 A = Clearance above grade, veranda, porch, deck, or balcony 12 inches (30 cm) 12 inches (30 cm) B = Clearance to window or door that may be opened 6 inches (15cm) for appliances < and including 10,000 Btuh (3kW), 12 inches (30 cm) for
PAGE 5
4) Frame an opening to the dimension specified in the Framing Dimension Table 1. Ensure that the centerline of the pipe lines up with the center of the prepared opening unless otherwise specified by the appliance manufacturer. NOTE: If a vertical rise is necessary on the exterior side of the building, a 14” and 36" Snorkel Termination (ST) is available. Follow the installation procedures for Horizontal Terminations.
PAGE 6
7) Determine the distance from the appliance outlet to a point just above (approximately 1 to 2 feet) either the Cathedral Ceiling Support Box or the Ceiling Support Plate and assemble lengths of pipe to satisfy this distance. Do not attach assembly to appliance. 8) Loosely position the Support Collar around the assembled lengths (flared end down). 9) From above, lower the assembled pipe sections down through the Cathedral Ceiling Support Box or Ceiling Support Plate and attach it to the appliance adapter.