Napoleon Grills BGD38PT, BGD38NT manual Formula 1 HT 4.2 VT

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10

TOP EXIT / HORIZONTAL TERMINATION

when (Ht) > (Vt)

FIGURE 7

Example 3:

 

 

Simple venting configuration (only one 90° elbow)

See graph to determine the required ver- tical rise VT for the required horizontal run HT.

V1

90°

H4

H1

 

V2

H2

H

90°

3

 

 

FIGURE 9

REQUIRED

VERTICAL

RISE IN

INCHES

VT

HORIZONTAL VENT RUN PLUS OFFSET IN FEET HT

The shaded area within the lines represents acceptable values for HT and VT .

For vent configurations requiring more than one 90° elbow the following formulas apply:

Formula 1: HT < 4.2

VT

 

Formula 2: HT + VT

<

24.75 feet

 

 

 

H1

H2

Example 2:

 

 

 

 

 

V1 90°

FIGURE 8

V1

= 4 ft

V2

= 1.5 ft

VT

= V1 + V2 = 4 + 1.5 = 5.5 ft

H1

= 2 ft

H2

= 1 ft

H3

= 1 ft

H4

= 1.5 ft

HR

= H1 + H2 + H3 + H4 = 2 + 1 + 1 + 1. 5 = 5.5 ft

HO

= .03(four 90° elbows - 90°) = .03(360° - 90°) = 8.1 ft

HT

= HR + HO = 5.5 + 8.1 = 13.6 ft

HT + VT = 13.6 + 5.5 = 19.1 ft

Formula 1: HT < 4.2 VT

4.2VT = 4.2 x 5.5 = 23.1 ft

13.6< 23.1

Formula 2: HT + VT < 24.75 feet

19.1 < 24.75

Since both formulas are met, this vent configuration is ac- ceptable.

V1

= VT = 6 ft

H1

= 3 ft

H2

= 5 ft

HR

= H1 + H2 = 3 + 5 = 8 ft

HO

= .03(two 90° elbows - 90°) = .03(180° - 90°) = 2.7 ft

HT

= HR + HO = 8 + 2.7 = 10.7 ft

HT + VT = 10.7 + 6 =16.7

Formula 1: HT < 4.2 VT

4.2VT = 4.2 x 6 = 25.2 ft

10.7< 25.2

Formula 2: HT + VT < 24.75 feet

16.7 < 24.75

Since both formulas are met, this vent configuration is ac- ceptable.

W415-0244 / A / 05.15.03

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Contents Direct Vent Millivolt System Table of Contents Napoleon GAS Fireplace Presidents Lifetime Limited Warranty General Information General InstructionsCare of GLASS, and Plated Parts Venting Venting LengthsAIR Terminal Installations Typical Vent Installations Special Vent InstallationsVenting Application Flow Chart Horizontal Termination VerticalDefinitions TOP Exit / Horizontal TerminationElbow Vent Length Values Formula 1 HT 4.2 VT TOP Exit Vertical Termination 90 V1 H3 H1 290 H Horizontal Installation Installation Wall and Ceiling ProtectionVertical Installation Using Flexible Vent Components Horizontal AIR Terminal InstallationUsing Rigid Vent Components Fireplace Vent ConnectionVertical Venting Installation GAS InstallationFraming Mobile Home InstallationMantle Installation Nailing TabsGvfl Louvre Installation Door Removal & Installation L38 Louvre InstallationFinishing Charcoal Embers LOG PlacementLogo Placement Glowing EmbersOptional Blower Installation WhiteOptional FAN Installation GD36 Thermostatic Sensor ControlMaintenance Operation / MaintenanceOperating Instructions Pilot Burner Adjustment AdjustmentsVenturi Adjustment Replacement Parts ReplacementsAccessories W415-0244 / a Trouble Shooting Guide Symptom Problem Test SolutionDo not Clean Glass When HOT Fireplace Service History