Vermont Casting RADVTBS, RADVTMB, RADVTSG manual Selkirk Direct-Temp Metalbestos Direct Vent System

Radiance Direct Vent Gas Heater

#7DVAIS Attic Insulation Shield

Use Four	#7DVFS
	Firestop in
8d Nails
	Upper Floor

	#7DVFS
ST222	Firestop in
	Ceiling

Fig. 32 Install firestops and attic insulation shield.

7.Install the appropriate roof support and flashing, making certain that the upper flange of the flashing base is below the shingles. (Fig. 33)

8.Install appropriate pipe sections until the vent run reaches above the flashing. The enlarged ends of the vent sections always face downward.

9.Install the storm collar and seal around the joints. (Fig. 33)

10.Add additional vent lengths to achieve the proper overall height.

11.Apply cement to the inner and outer termination col- lars and install the terminal cap.

	Use three #5
	sheet metal
	screws at
	each joint
		Sealant
Storm Collar
		Upper
		edge of
#7DVSKV		flange goes
(A, B, or		under upper
F) Roof		shingles
Support
Flashing		ST221
Fig. 33	Roof support and flashing.

Selkirk Direct-Temp Metalbestos Direct

Vent System

Installation Instructions

1.Determine whether the length of pipe fits the appli- ance outlet by attempting to engage the parts. If the parts engage smoothly, proceed to Step 2. If ob- structions, interference or loose fit is noted, contact the appliance manufacturer or Selkirk Metalbestos with the dimensions of the appliance outlet.

2.Slide the length of pipe over the appliance outlet a minimum of 1¹⁄₂” and screw to the appliance outlet collar using a minimum of two (2) #8 x 1/4” sheet metal screws.

Appliance Adapter (AAV)

The appliance adapter (AAV) adapts DIRECT-TEMP to most direct vent appliances incorporating outlet collars configured to receive most common 4” (ID) 6⁵⁄₈” (OD) or 5” (ID) by 8” (OD) “Twist Lock” Style, direct vent sys- tems.

The adapter incorporates two (2) 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.

Framing Dimension Table 1

Model DT	Ceiling Support (CS)	Cathedral Ceiling	Wall Thimble
Diameter	Firestop (FS)	Support CCS)	(WT)
4”	8¹⁄₄” x 8¹⁄₄”	10⁵⁄₈” x 10⁵⁄₈”	8¹⁄₄” x 8¹⁄₄”
5”	10¹⁄₈” x 10¹⁄₈”	14¹⁄₂” x 14¹⁄₂”	10¹⁄₈” x 10¹⁄₈”

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 recom- mendations.

Joint Connection:

The pipe and elbows are assembled by inserting the outlet (male) end of a length of pipe or elbow into the in- let (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. (Fig. 34)

Supporting DIRECT-TEMP: Vertical Support

Vertical installations can be supported by two methods:

Ceiling Support (CS) (used in flat ceiling installation) comes with a support plate and a support collar. Install

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