Installation Guide

PG 19
TEE-SUPPORTED INSTALLATIONS
Tee-Supported installations are used when passing through a wall to an outside
chimney. The Tee Support can hold a maximum of 50 feet of AF-HST chimney. The
required parts and general configuration are as shown in Figures 20 & 21.
1. Place Appliance: Position the appliance according to the manufacturer’s
instructions. It is a good idea to try to position the appliance so it will allow the
chimney to line up centered between studs.
2. Locate, Cut & Frame Opening: Determine the location where the chimney will
pass through the wall. The chimney should pass through the wall, centered
between two studs. The height of the penetration can be determined by
positioning sections of stove pipe until you have a desired configuration (refer to
the appliance manufacturer’s installation instructions for restrictions on stove
pipe). Cut and frame an opening in the inner and outer walls at this location.
Refer to Table 1 (page 6) for the appropriate framing dimensions.
3. Install Wall Thimble: From the outside wall, put the outer half of the Wall
Thimble in the opening. Center the outer half of the Wall Thimble. Secure the
Wall Thimble to the outside wall with at least (4) 8-penny nails or (4) #8, 1-½”
screws. For concrete walls a Wall Thimble is not required. The hole on the wall
just needs to be just large enough for the chimney pipe to pass through. Install
the inner half (with round plate) of the Wall Thimble in the inside wall surface,
ensuring that the shield slides into the shield of the outer half. Secure the Wall
Thimble to the inside wall with at least (4) 8-penny nails or (4) #8, 1-½” screws.
4. Install Base Wall Support, Tee and Tee Cap: Assemble the Base Wall
Support Kit (Figure 22) by attaching the 2 triangle brackets to the support plate,
with the hardware supplied (female coupler of the insulated coupling section on
the Base Plate faces down, male end faces up). Install one 6” Chimney Section
(or longer as required) to the horizontal branch of the insulated Tee. Lock
securely into the Tee by twisting clockwise. A locking band (included) must be
installed at this connection. Make sure the clamp is facing down to prevent any
water from collecting in the locking band.
From outside the building, slide the chimney length (previously installed on the
Tee) through the Wall Thimble ensuring the male coupling on the Tee is facing
upward.
Install the mail coupler of the insulated coupling section on the support plate into
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