Thomas & Betts LDAP 1200 warranty Joints and Sealing, Outlet

3) Venter (Flue)

Venter Outlet Attachment Requirements:

Outlet

Model	Venter Outlet
LDAP	Diameter
Size	inches	mm
400	6	152
800	8	203
1200	8	203

Depending on the size of vent pipe
as determined in Step No. 2, attach	Airflow	Taper-type
either the vent pipe directly to the		Diameter
		Pipe
venter collar or a taper-type enlarger.		Increaser

Follow instructions in Requirement No. 4. below to make the connection for the type of pipe being used.

4) Joints and Sealing	Provide field-supplied vent pipe as specified in Requirement No. 1.
	• If using single wall, 26-gauge or heavier galvanized pipe, secure slip-fit connec-
	tions using sheetmetal screws or rivets. Seal pipe joints either with tape suitable for
	550°F (such as Option FA1, P/N 98266) or high-temperature silicone sealant.
	• If using Category III vent pipe, follow pipe manufacturer's instructions for join-
	ing pipe sections. When attaching Category III pipe to the venter outlet or the vent
	cap, make secure, sealed joints following a procedure that best suits the style of
	Category III pipe being used.
	• If installing a double-wall (Type B) terminal pipe, follow the instructions in FIG-
	URE 17C to join the double-wall pipe to a single-wall or Category III vent pipe
	run. To attach the vent cap, follow instructions in FIGURE 17B.
	• If using double-wall (Type B) vent pipe in the vent pipe run (at least 75% of the
	equivalent vent length must be vertical), follow the pipe manufacturer's instruc-
	tions for joining pipe sections. For attaching double-wall pipe to the heater, see
	FIGURE 17A. To attach the vent cap, see FIGURE 17B.

FIGURE 17A - Attaching Double- Wall (Type-B) Vent Pipe to the Venter Outlet

A double-wall pipe run is allowed only if at least 75% of the vent length is vertical.

Figure 17A - STEP 1
Slide the	Double-
double-wall
	Wall
pipe over
	Pipe
the collar
so that the
collar is	Venter
inside the
	Collar
inner pipe.

Figure 17A - STEP 2

To secure the connection, spaced equal distance around the pipe, drill and insert three 3/4” long sheetmetal screws through the pipe and into the collar. Do not over tighten the screws.

Fill inside the pipe, around the collar, with silicone sealant being sure there are no gaps.

FIGURE 17B - Attaching Double-Wall (Type B) Pipe to a Vent Cap

Figure 17B - STEP 1

Place a continual 3/8” bead of silicone sealant around the circumference of the vent cap collar. This will prevent any water inside the vent cap from running down the double-wall pipe.

Do STEP 2 immediately following STEP 1.

Figure 17B - STEP 2

Insert the collar on the vent cap inside the inner wall of the double-wall pipe. Insert as far as possible. Add additional silicone sealant to fully close any gaps between the vent cap and the double-wall pipe. This is necessary to prevent water from entering the double-wall pipe.

Figure 17B - STEP 3

Secure the vent cap to the double-wall pipe by drilling and inserting a

3/4” long sheetmetal screw into the vent cap collar. Do not over tighten screw.

Form RZ-NA-I-LDAP, P/N 207733 (Rev 2), Page 27