OWNER’S MANUAL

VENTING INSTALLATION

Continued

3.Lower the support box through the hole in the roof until the bottom of the box extends at least 2" below the ceiling (see Figure 26). Align the support box vertically and horizontally using a level. Temporarily tack the support box in place through the inside walls and into the roof sheathing.

4.Using tin snips, cut the support box from the top corners down to the roofline and fold the resulting flaps over the roof sheathing (see Figure 27). Apply a bead of non-hardening mastic around the top edges of the support box to make a seal between the box and the roof. Nail in place with roofing nails. Remove any combustible material that might be in- side of the support box.

5.Complete the cathedral ceiling instal- lation by following the same proce- dures outlined in steps 2 through 7 for Flat Ceiling Installation, page 12.

Level

Cathedral ceiling support box

2" minimum below finished ceiling

Vertical Termination Configurations

Figures 28 through 31 show four different configurations for vertical termination. All connections must be sealed with high temperature silicone sealant as specified in the second warning statement on page 7.

Venting with Two 90° Elbows

Vertical (V)

Horizontal (H1) +

 

Horizontal (H2)

5' min.

2' max.

6' min.

4' max.

7' min.

6' max.

8' min.

8' max.

20' max.

8' max.

45° Starter Elbow

Required

Figure 28 - Vertical Rigid Venting Configuration Using Two 90° Elbows with Two

Horizontal Runs

Cut hole 1/8" larger than support box when projected onto roofline

Figure 26 - Cathedral Ceiling Support Box Installation

 

Venting with One 90° Elbow

45° Starter Elbow

Vertical (V)

Horizontal (H)

 

 

Required

5' min.

2' max.

 

6' min.

4' max.

 

7' min.

6' max.

 

8' min.

8' max.

 

20' max.

8' max.

Non-hardening Mastic under all edges of support box before nailing

Figure 29 - Vertical Rigid Venting Configuration Using One 90° Elbow

Figure 27 - Installed Cathedral Ceiling

Support Box

Continued

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Image 13
Vanguard Heating VDDVF36STN/STP, VDDVF36PN/PP Vertical Termination Configurations, Venting with One 90 Elbow

VDDVF36STN/STP, VDDVF36PN/PP specifications

The Vanguard Heating VDDVF36PN/PP and VDDVF36STN/STP are premium direct vent gas fireplaces that seamlessly blend contemporary design with advanced heating technologies. These models are perfect for homeowners looking to enhance their living spaces while ensuring optimal warmth and comfort.

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