Napoleon Fireplaces GD70PT-S, GD70NT-S Formula 1 H T 3V T Formula 2 H T + V T 40 feet Example

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9

 

VERTICAL TERMINATION

 

when (HT) > (VT)

For vent configurations requiring more than two 90°

Simple venting configurations

elbow the following formulas apply:

 

 

 

FIGURE 10

Formula 1: HT < 3VT

 

 

Formula 2: HT + VT < 40 feet

 

Example 7:

 

 

90°

90°

 

 

 

 

V3

 

V

H2

 

1

V2

 

H1

90°

 

 

 

 

90°

See graph to determine the required vertical rise VT for the required horizontal run HT.

 

19

20

 

 

 

 

 

 

 

 

 

 

 

 

 

FIGURE 11

MAXIMUM

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

VERTICAL

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

RISE

IN

10

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

FEET

3

 

 

 

 

 

 

 

 

 

 

V1

= 2 ft

 

 

 

VT

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

0

5

 

10

15

2

0

25

30

V2

= 1 ft

 

 

 

 

 

 

 

V3

= 1.5 ft

 

 

HORIZONTAL VENT RUN PLUS OFFSET IN FEET

 

 

 

T

V

= V + V + V = 2 + 1 + 1.5 = 4.5 ft

The shaded area within the lines represents acceptable

T

 

1

2

3

 

values for H

T

and V

T

.

 

 

 

 

 

H1

= 6 ft

 

 

 

 

 

 

 

 

 

 

 

 

 

H2

= 2 ft

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

HR

= H1 + H2 = 6 + 2 = 8 ft

 

 

 

 

 

 

 

 

 

 

 

 

HO

= .03(four 90° elbows - 90°)

 

 

 

 

 

 

 

 

 

 

 

 

 

= .03(90 + 90 + 90 + 90 - 90) = 8.1 ft

 

 

 

 

 

 

 

 

 

 

 

 

HT

= HR + HO= 8 + 8.1 = 16.1 ft

 

 

 

 

 

 

 

 

 

 

 

 

HT + VT = 16.1 + 4.5 = 20.6 ft

 

 

 

 

 

 

 

 

 

 

 

 

Formula 1:

HT< 3VT

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

3VT

= 3 x 4.5 = 13.5 ft

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

16.1 > 13.5

 

Since this formula is not met, this vent configuration is unacceptable.

Formula 2: HT+ VT < 40 feet 20.6 < 40

Since only formula 2 is met, this vent configuration is unac- ceptable and a new fireplace location or vent configuration will need to be established to satisfy both formulas.

W415-0434 / C / 03.24.05

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Contents Vented GAS Fireplace Heater Direct Vent Millivolt System Please Retain this Manual for Future Reference Napoleon GAS Fireplace Presidents Lifetime Limited Warranty General Information General InstructionsVenting Care of GLASS, and Plated PartsVenting Lengths & AIR Terminal Locations TOP Exit / Horizontal Termination DefinitionsElbow Vent Length Values H2 H3 Vertical Termination Formula 1 H T 3V T Formula 2 H T + V T 40 feet Example AIR Terminal Installations Installation Wall and Ceiling Protection Horizontal InstallationVertical Installation Using Flexible Vent Components Horizontal AIR Terminal InstallationVertical AIR Terminal Installation Using Rigid Vent Components Vertical Venting InstallationFireplace Vent Connection Mobile Home Installation GAS InstallationRestricting Vertical Vents FramingExample a NON-COMBUSTIBLE Material Mantle ClearancesFlush Finish Example B Bevelled TrimFinishing L38 Louvre Installation LOG Shipping Bracket Decorative PanelsCharcoal Strips Baffle Installation LOG PlacementGlowing Embers Charcoal EmbersLine Switch Accent Lite ReplacementBlower Installation Thermodisc ReplacementBlower System Operating Instructions Operation / MaintenanceMaintenance AdjustmentsPilot Burner Adjustment Venturi AdjustmentReplacements W415-0434 / C Symptom Problem Test Solution Trouble Shooting GuideMain burner orifice is plugged Fireplace Service History W415-0434 / C

GD70PT-S, GD70NT-S specifications

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