Rear Venting Applications

GENERAL INFORMATION ON ASSEMBLING

THE TWIST LOCK VENT PIPES

When using CFM Majestic twist lock pipe it is not neces- sary to use silicone to seal the twist lock joints. The only areas that need silicone are the collars on the fireplace, the telescoping pipe (if used) and the horizontal termina- tion connection (when necessary).

To join the pipes together, simply align the beads of the male end with the grooves of the female end and while joining the two together, twist the pipe until the flange on the female end touches the external bead on the male end. Secure the joints with three sheet metal screws.

To make easier to assembly, we suggest putting lubri- cant (vaseline or similar) on the male end of the twist lock pipe.

TWIST LOCK PIPE JOINT

Screw Holes

Crimped pipe and new twist lock pipe.

It is possible to use CFM Majestic 4" & 7" direct vent crimped pipe and elbows in your system, with the new CFM Majestic 4" & 7" Direct Vent Twist Lock Pipe.

You must use the crimped pipe first in the system off the appliance.

1.Install expanded end of crimped pipe or elbow onto the 4" & 7" collars off the fireplace with high tem- perature sealant and 3 screws.

2.If you wish to continue your system with your 4" & 7" crimped pipe or elbow apply high temperature sealant on crimped end of pipe at 2" in from end and fasten the next pipe with 3 sheet metal screws.

3.When you wish to continue your system with the New Twist Lock pipe or elbow, apply high tempera- ture sealant on crimped end of pipe at 1-1/2" from end, and slip the female end of the twist lock pipe over the crimped end of the pipe and secure with 3 sheet metal screws. Continue the installation with twist lock pipe placing the female end over the male end and fastening with 3 sheet metal screws.

You do not have to use high temperature sealant when using twist lock pipe between the female and male ends of the twist lock.

Except on: 1.Adjustable lengths (telescoping joint only)

2.Crimped collar on existing fireplaces.

3.Terminations where required.

Note: It is not necessary to seal the vent pipe joints for any rear vent applications.

Minimum clearances between vent pipe and com- bustible materials are as follows:

Top	- 2" (50 mm)
Sides	- 1" (25 mm)
Bottom	- 1" (25 mm)

Note: Vent Starter Kit Model 7TDVRVT must be used in rear vent applications.

Maximum Vent Length		20" - Fig. 39

20" (508mm)

TOP VIEW

Fig. 39

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BHDR36 specifications

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