Bard WG3S1, WG4S1, WG5S1 Natural Gas Orifice and Altitude Tables, Bard Part No, Orifice Diameter

Page 8

Natural Gas Orifice and Altitude Tables

 

 

 

6,001 to 8,000 Feet

8,001 to 10,000 Feet

 

 

 

Requires Pressure Switch

Requires Pressure Switch

Factory

Gas Heat*

Up to 6,000 Feet No

Change and Orifice

Change and Orifice

Standard

Value

Changes Except

Change

Change

Input

BTU/Cu. Ft.

for BTU Content

Based on BTU Content

Based on BTU Content

25000 BTU

700-749

2.90

2.80

2.70

 

Per Burner

 

 

 

 

 

750-799

2.80

2.70

2.60

 

 

 

 

 

 

 

 

 

 

800-849

2.70

2.60

2.50

 

 

 

 

 

 

 

 

850-899

2.60

2.50

2.45

 

 

 

 

 

 

 

 

900-949

2.50

2.45

(2.40)

 

 

 

 

 

 

 

 

950-999

2.45

(2.40)

2.35

 

 

 

 

 

 

 

 

1000-1049**

(2.40)

2.35

[2.30]

 

 

1050-1100

[2.30]

2.25

2.20

 

 

 

 

 

 

 

Pressure Switch

Standard (.55)

Order 8620-189 High Altitude Pressure Switch Kit (.42)

 

(2.40) is the standard factory installed orifice size

[2.30] orifices are shipped with the unit for field installed

 

 

 

optional 10% derate

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

6,001 to 8,000 Feet

8,001 to 10,000 Feet

Optional

 

 

Requires Pressure Switch

Requires Pressure Switch

10% Field

Gas Heat*

Up to 6,000 Feet No

Change and Orifice

Change and Orifice

Converted

Value

Changes Except

Change

Change

Derate

BTU/Cu. Ft.

for BTU Content

Based on BTU Content

Based on BTU Content

22500 BTU

700-749

2.75

2.70

2.60

 

Per Burner

 

 

 

 

 

750-799

2.70

2.60

2.50

 

 

 

 

 

 

 

 

 

 

800-849

2.60

2.50

 

 

 

 

 

 

 

 

 

850-899

2.50

2.45

(2.40)

 

 

 

 

 

 

 

 

900-949

(2.40)

2.35

[2.30]

 

 

 

 

 

 

 

 

950-999

2.35

[2.30]

2.25

 

 

 

 

 

 

 

 

1000-1049**

[2.30]

2.25

2.20

 

 

 

 

 

 

 

 

1050-1100

2.25

2.25

2.20

 

 

 

 

 

 

 

Pressure Switch

Standard (.55)

Order 8620-189 High Altitude Pressure Switch Kit (.42)

 

[2.30] orifices are shipped with the unit for field

(2.40) is the factory installed orifice size for full rated input

installed optional 10% input rate.

 

 

 

*At standard conditions: 30.00 inches Mercury, 60F, saturated, .60 specific gravity.

**All Natural Gas factory orifice sizing and standard input ratings based on nominal 1025 BTU/cu ft gas and sea level conditions

All other orifice sizes shown are available as individual items. See Orifice charts below for part numbers and number required.

Bard Part No.

Orifice Size (mm)

Orifice Diameter

 

 

 

9010-092

2.10

0.0826

 

 

 

9010-088

2.15

0.0846

 

 

 

9010-087

2.20

0.0866

 

 

 

9010-086

2.25

0.0885

 

 

 

9010-082

2.30

0.0905

 

 

 

9010-085

2.35

0.0925

 

 

 

9010-079

2.40

0.0945

 

 

 

9010-084

2.45

0.0964

9010-093

2.50

0.0984

 

 

 

9010-094

2.60

0.1024

 

 

 

9010-095

2.70

0.1063

 

 

 

9010-096

2.75

0.1082

 

 

 

9010-097

2.80

0.1102

 

 

 

9010-098

2.90

0.1142

 

 

 

No. of Orifices Required

Based on Unit Input Rating

45,000 (2)

50,000 (2)

68,000 (3)

75,000 (3)

90,000 (4)

100,000 (4)

113,000 (5)

125,000 (5)

Form No.

S3396-1112

Supersedes

S3396-212

Page

8 of 12

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Contents Engineered Features WALL-MOUNT Step Capacity GAS/ELECTRIC WG*S SeriesSpecifications Cooling System Capacity, Efficiency & Airflow RatingsHeating System Capacity, Efficiency & Airflow Ratings WG3S1 WG4S1 WG5S1Indoor Blower Performance Ventilation System PackagesModel ESPWG5S Ventilation Airflow Application Data WGSERV-A5A, -C5A This page intentionally left blank Propane Gas Conversion Kits -- Fits All WG-Series Models WG3SWG4S WG5SNatural Gas Orifice and Altitude Tables Bard Part NoOrifice Diameter No. of Orifices Required Based on Unit Input Rating2nd Stage Cooling Application Data Outdoor Temperature This page intentionally left blank Dimensions of Basic Unit Minimum ClearancesTop Supply Outlet Conversion Kits Field Installed Optional Field Installed AccessoriesAir Conditioning Wall-Mount Model Nomenclature Ventilation Options

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