Assessments - 4, GPA: 3.8
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Operation of improperly installed and maintained venting system could result in serious injury, property damage or loss of life. Horizontal Termination Configurations Figures 18 through 25 show different configurations and alternatives for venting with horizontal termination. Each figure includes a chart with critical minimum and maximum dimensions which MUST be met. IMPORTANT: Remember that a horizontal run of venting must have a 1/4" rise for every 12" of run toward the termination. GROUND FLOOR INSTALLATION REAR VENT Recommended Applications fo Rear Vent Model (V)CD36R: • Installation using cabinet surrounds • Through the wall using round or square termination (up to a maximum of 18” of horizontal pipe) • Corner installation (Using one 45° elbow and a maximum of 18" of horizontal pipe). Vent Cap Inner Wall Firestop Pipe Section Figure 16 - Installing Inner Wall Firestop Minimum Pipe Overlap 11/4" Siding Standoff Direct-Vent Pipe Screws Wall Firestop TOH Straight/Adjustable Pipe 18" Max. Horizontal Square Termination Maintain 1" Minimum Air Space Around Outer Pipe When Penetrating a Wall High Wind Termination Wall Firestop Apply Mastic to Outside Edge of Standoff 10 3/4" x 10 3/4" Framed Opening Square Termination Vertical (V) Horizontal (H) 25 1/2" Min. 22" Max Exterior Wall with Vinyl Siding Figure 17 - Typical Horizontal Termination Cap Mounting with Additional Siding Standoff Installed Figure 18 - Horizontal Termination Configureation for Flush Installation (Model (V)CD36R) Horizontal Square Termination Venting Installation instructions Continued Straight/ Adjustable Pipe 24" Max. 90° Elbow H V Straight/Adjustable Pipe 18" Max. Horizontal Square Termination 45° Elbow Wall Firestop Wall Firestop Corner Installation Vertical (V) Horizontal (H) 45 1/2" Min. 32 1/2" Max Corner Installation Vertical (V) Horizontal (H) 25 1/2" Min. 24" Max Figure 21 - Horizontal Termination Configuration For Corner Installation Using One 90° Elbow (Model (V)CD36T) Figure 19 - Horizontal Termination Configuration for Corner Installation (Model (V)CD36R) Not to Exceed (H) Limits 90° Elbow TOH Square Termination As Required for (V), See Chart for Pipe Section Required Exterior Portion of Wall Firestop (Round Termination Only) 90° Elbow Wall Firestop Wall Firestop Horizontal Round Termination Required Vertical (V) Vertical (V) Vertical Pipe Allowable Horizontal (H) 45 1/2" None 26" Max. 57 1/4" Min. 1 ft. 30" Max. 69 1/4" Min. 2 ft. 74" Max. 81 1/2" Min. 3 ft. 98" Max. 94" Min. 4 ft. 122" Max. 106" Min. 5 ft. 146" Max. 159" Min. 9 ft. 20' Max. Figure 20 - Horizontal Termination Configuration Round Termination (Model (V)CD36T) GROUND FLOOR INSTALLATION Recommended Applications for Rear Vent Model (V)CD36T: • Installation using cabinet surrounds • Through the wall using round or square termination (up to 24" horizontal pipe) • Corner installation (Using one 90° elbow and a maximum of 24" of horizontal pipe) Figure 22 - Horizontal Termination Configuration with Vertical Rise and One 90° Elbow (Model (V)CD36T) Venting Installation instructions Continued SNORKEL TERMINATION INSTALLATION Recommended Applications Models (V)CD36R and (V)CD36T: • Installations requiring vertical rise on building exterior. • Installation using snorkel termination to achieve 1 ft. above grade. Snorkel terminations are available for installations requiring a vertical rise on the exterior of the building. If installing snorkel below grade you must provide proper drainage to prevent water from entering snorkel (see Figure 23, page 15). Do not back fill around snorkel termination. Snorkel Termination Snorkel Termination Wall Firestop Snorkel Termination 90° Elbow 12" Min. 12" Min. 12" Min. Adequate Drainage Figure 23 - Snorkel Termination Configuration For Below Ground Installation HORIZONTAL VENT INSTALLATIONS USING MULTIPLE 90° ELBOWS (V)CD36T TOP VENT The following configurations show the minimum vertical rise requirements for a horizontal system using two 90° elbows. 90° Elbow 90° Elbow Venting with Two 90° Elbows Vertical (V) Horizontal (H)+ Horizontal (H2) 7' Min. 10' Max 8' Min. 12' Max 9' Min. 14' Max 10' Min. 16' Max 11' Min. 18' Max 13' Min. 20' Max Figure 24 - Horizontal Termination Configuration For Venting Using Two 90° Elbows (Model (V)CD36T) Venting Installation instructions Continued Venting with Two 90° Elbows Vertical (V) Horizontal (H) Horizontal (H)+ Horizontal (H2) 5' Min. 2' Max. 6' Max 6' Min. 3' Max. 8' Max 7' Min. 4' Max. 10' Max 8' Min. 5' Max. 12' Max 12' Min. 8' Max. 20' Max 20' Min. 8' Max. 20' Max TOH 90° Elbow 90° Elbow 90° Elbow Figure 25 - Horizontal Termination Configuration for Venting Using Three 90° Elbows (Model (V)CD36T) installation for vertical termination Note: Vertical restrictor must be installed in all vertical installations. 1. Determine the route your vertical venting will take. If ceiling joists, roof rafters or other framing will obstruct the venting system, consider an offset (see Figure 26) to avoid cutting l...
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