Bradford-White BWCH User Manual

Size:
3.58 Mb
Download

Installation and Operation Instructions

Document 1270

 

 

Installation and Operation

Instructions for

Copper BruteII

Hydronic Boiler

Model BWCH

Water Heater

Model BWCV

Sizes 500-2000

U.S. Reg. 2,765,423

FOR YOUR SAFETY: This product must be installed and serviced by a professional service technician, qualified in hot water boiler installation and maintenance. Improper installation and/or operation could create carbon monoxide gas in flue gases which could cause serious injury, property damage, or death. Improper installation and/or operation will void the warranty. For indoor installations, as an additional measure of safety, Bradford White strongly recommends installation of suitable Carbon

Monoxide detectors in the vicinity of this appliance and in any adjacent occupied spaces.

WARNING

If the information in this manual is not followed exactly, a fire or explosion may result causing property damage, personal injury or loss of life.

Do not store or use gasoline or other flammable vapors and liquids in the vicinity of this or any other appliance.

WHAT TO DO IF YOU SMELL GAS

Do not try to light any appliance.

Do not touch any electrical switch; do not use any phone in your building.

Immediately call your gas supplier from a nearby phone. Follow the gas supplier's instructions.

If you cannot reach your gas supplier, call

the fire department.

Installation and service must be performed by a qualified installer, service agency, or gas supplier.

AVERTISSEMENT

Assurez-vousde bien suivres les instructions données dans cette notice pour réduire au minimum le risque d’incendie ou d’explosion ou pour éviter tout dommage matériel, toute blessure ou la mort.

Ne pas entreposer ni utiliser d’essence ni d’autres vapeurs ou liquides inflammables dans le voisinage de cet appareil ou de tout autre appareil.

QUE FAIRE SI VOUS SENTEZ UNE ODEUR DE GAZ:

Ne pas tenter d’allumer d’appareils.

Ne touchez à aucun interrupteur. Ne pas vous servir des téléphones dansle bâtiment où vous trouvez.

Appelez immédiatement votre fournisseur de gaz depuis un voisin. Suivez les instructions du fournisseur.

Si vous ne pouvez rejoindre le fournisseur de

gaz, appelez le sservice des incendies. L’installation et l’entretien doivent être assurés par un installateur ou un service d’entretien qualifié ou par le fournisseur de gaz.

H2214401F

Page 2

BRADFORDWHITECORP.

 

 

 

 

TABLE OF CONTENTS

SECTION 1.

 

SECTION 3.

 

General Information

 

Gas Supply and Piping

 

1.1

Introduction.......................................................

4

3.1

Gas Supply and Piping...................................

13

1.2

Model Identification..........................................

4

SECTION 4A.

 

1.3

Warranty...........................................................

5

 

1.4

Dimensions.......................................................

5

Water Connections – Boiler

 

1.5

Locating the Appliance.....................................

5

4A.1

Heating System Piping:

14

1.6

Locating Pump-MountedWater Heater

 

 

Hot Supply Connections – Boiler....................

 

4A.2

Cold Water Make-Up– Boiler

14

 

with Respect to Storage Tank(s)......................

7

1.7

Locating Pump-MountedBoiler with

 

4A.3

Water Flow Requirements – Boiler.................

14

 

Respect to Return/Supply Header....................

7

4A.4

Freeze Protection – Boiler..............................

14

1.8Locating Appliance for Correct Horizontal Vent/

 

Ducted Air Distance From Outside Wall...........

7

SECTION 4B.

 

 

 

 

Water Connections – Water Heater

 

SECTION 2.

 

4B.1

Water System Piping – Water Heater.............

20

Venting and Combustion Air

 

4B.2

Hot Water Supply Piping – Water Heater.......

20

2.1

Combustion Air.................................................

8

4B.3

Water Flow Requirements – Water Heater.....

20

2.1.1

Combustion Air From Room.............................

8

4B.4

Combined Water Heating (potable)

20

2.1.2

Intake Combustion Air

8

 

and Space Heating – Water Heater...............

4B.5

Freeze Protection – Water Heater

21

2.2

Venting

9

 

 

 

2.2.1

Vent Categories................................................

9

SECTION 5.

 

2.2.2

Category I Vent

9

 

Electrical Connections

 

2.2.3

Common Venting Systems...............................

9

5.1

Main Power

24

2.2.4

Category III Vent

1

5.1.1

Power Circuits

24

2.3

Locating Vent & Combustion Air Terminals

11

5.2

Temperature Control

24

2.3.1

Side Wall Vent Terminal

11

5.2.1

Temperature Control Description

24

2.3.2

Side Wall Combustion Air Terminal

11

5.3

External Staging Control Wiring

26

2.3.3

Vertical Vent Terminal

12

 

 

 

2.3.4

Vertical Combustion Air Terminal....................

12

 

 

 

2.4

Common Vent Test – Boilers..........................

12

 

 

 

2.5

Vent Terminals for Outdoor Units...................

12

 

 

 

COPPER BRUTE II (500 - 2000)

Page 3

 

 

 

 

SECTION 6.

 

Operating Instructions

 

6.1

Sequence of Operation..................................

36

6.2

Filling the Boiler System.................................

36

6.3

Programming the Temperature Control..........

37

6.3.1

System Piping................................................

37

6.3.2

Choosing the Mode........................................

37

6.3.3

Programming..................................................

38

6.3.4

Choosing the Mode for your Application.........

40

6.4

Advanced Topics............................................

42

6.4.1

Differential......................................................

42

6.4.2

Staging Mode.................................................

42

6.4.3

Boiler Minimum (BOIL MIN)...........................

43

6.4.4

Boiler Maximum (BOIL MAX).........................

43

6.4.5

Boiler Target Temperature..............................

43

6.4.6

Pump Operation.............................................

43

6.4.7

Setpoint Operation ........................................

44

6.4.8

Dedicated Domestic Hot Water......................

44

6.4.9

Outdoor Reset Operation...............................

44

6.4.10 External Boiler Operation...............................

46

6.4.11 Limit Controls.................................................

46

6.4.12 Advanced Programming Mode.......................

46

6.5

Operating the Burner and Set Up...................

46

6.5.1

Set Up for 0 to 2500 Feet Altitude..................

46

6.5.2

High Altitude Adjustment and Set Up.............

47

6.6

Shutting Down the Copper Brute II.................

47

6.5

To Restart the Copper Brute II........................

47

SECTION 7.

 

Maintenance

 

7.1 System Maintenance......................................

48

7.2Appliance Maintenance and

 

Component Description..................................

48

7.2.1

Burners...........................................................

48

7.2.2

Filter...............................................................

48

7.2.3

Gas Valves.....................................................

48

7.2.4

Manual Reset High Limit Control....................

48

7.2.5

Automatic Reset High Limit Control...............

48

7.2.6

Temperature Control.......................................

49

7.2.7

Ignition Controls.............................................

49

7.2.8

Ignitors............................................................

49

7.2.9

Ignition Sensors..............................................

49

7.2.10 Transformer....................................................

49

7.2.11 Blowers...........................................................

49

7.2.12 Flow Switch....................................................

49

7.2.13 Heat Exchanger Coil......................................

49

SECTION 8.

 

Trouble Shooting

 

8.1

Resolving Lockouts........................................

51

8.2

Delayed Ignition – Possible Causes...............

51

8.3

Short Cycling – Boiler.....................................

51

8.4

Short Cycling – Water Heater.........................

51

8.5

High Gas Consumption..................................

51

8.6

Troubleshooting the Temperature Control......

51

8.7

Troubleshooting Copper Brute II Controls......

51

SECTION 9.

 

Replacement Parts

 

9.1

General Information........................................

54

9.2

Parts List........................................................

54

Page 4

BRADFORDWHITECORP.

 

 

 

 

SECTION 1.

General Information

USING THIS MANUAL – Because the Copper Brute II Boilers and Copper Brute II Water Heaters are identical appliances, with the exception of materials of manufacture, labels and ultimate use application, this manual provides information for the proper installation, operation and maintenance of both products. Where differences exist between the application of the appliances and their operation, the sections pertinent to only one appliance or the other will be so identified.

In the Commonwealth of Massachusetts, this appliance must be installed by a licensed plumber or gas fitter.

WARNING

The Copper Brute II hydronic, boiler or water heater must be installed in accordance with the procedures detailed in this manual, or the Bradford

White warranty may be voided. The installation must conform to the requirements of the local jurisdiction having authority, and, in the United States, to the latest edition of the National Fuel Gas Code, ANSI Z223.1/NFPA54. In Canada, the installation must conform to the latest edition of the Natural Gas and Propane Installation Code, CSA B149.1 and/ or local codes. Where required by the authority having jurisdiction, the installation of Copper Brute

II appliances must conform to the Standard for

Controls and Safety Devices for Automatically Fired Boilers, ANSI/ASME CSD-1.Any modifications to the boiler, its gas controls, or wiring may void the warranty. If field conditions require modifications, consult the factory representative before initiating such modifications.

1.1Introduction

This manual provides information necessary

for the installation, operation, and maintenance of Bradford White Corp, Copper Brute II copper tube appliances. Read it carefully before installation.

All application and installation procedures should be reviewed completely before proceeding with the installation. Consult the Bradford White factory, or local factory representative, with any issues or questions regarding this equipment. Experience has shown that most operating issues are caused by improper installation.

The Copper Brute II appliance is protected against over pressurization. A pressure relief valve is fitted to all appliances. It is installed on the outlet header, at the water outlet of the appliance.

IMPORTANT: The inlet gas pressure to the appliance must not exceed 13" w.c. (3.2kPa).

All installations must be made in accordance with:

1)In the U.S., the " National Fuel Gas Code"ANSI Z223.1/NFPA54, Latest Edition and all applicable local codes as required by the Authorities Having Jurisdiction (AHJ), or

2)In Canada, the "Natural Gas and Propane Installation Code", CSA B149.1, latest edition and all applicable local codes as required by the AHJ.

All electrical wiring is to be done in accordance with:

1). In the U.S., the "National Electrical Code" (NEC), ANSI/NFPA 70, latest Edition and all applicable local codes as required by the AHJ, or

2). In Canada, the “Canadian Electrical Code - Part 1”, CSA STD. C22.1 and all applicable local codes as required by the AHJ.

This appliance must be electrically grounded in accordance with the applicable codes and standards referenced above.

1.2Model Identification

Consult the rating plate on the unit. The

following information describes the model number structure.

1

2

 

3

4

 

5

6

7

8

 

 

9

10

 

11

 

 

12

 

13

 

14

 

15

 

16

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

B

 

W

 

C

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

A

 

 

 

C

 

 

 

 

 

 

 

 

2

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

SERIES

 

 

USAGE

 

 

SIZE

 

 

 

FUEL

 

 

ALTITUDE

 

LOCATION

 

 

FIRING

 

REVISION

 

 

HEAT

 

OPTIONS

 

 

PUMP

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

B

 

W

C

 

 

H

 

0

5

0

0

 

 

N

 

 

 

A

 

 

C

 

 

MODE

 

2

 

 

EXCHANGER

 

 

CODE

 

OPTIONS

 

 

 

 

 

 

 

 

 

 

K (500/750)

 

 

 

 

 

 

X

 

 

 

 

 

 

 

 

 

V

 

0

7

5

0

 

 

P

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

B

 

 

 

 

 

X

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1

0

0

0

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

N (1000)

 

 

 

 

 

 

 

C

 

 

 

J

 

 

H

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1

2

5

0

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

L (1250-2000)

 

 

 

 

 

 

 

K

 

 

 

L

 

 

N

 

 

 

 

 

 

 

 

 

 

 

 

1

5

0

0

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

N

 

 

 

 

 

 

 

S

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1

7

5

0

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

P

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

2

0

0

0

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

S

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

COPPER BRUTE II (500 - 2000)

Page 5

 

 

 

 

Model Character Designation

1-3Model Series Designation

B W C = Bradfrod White, Copper Brute II

4Usage

H = Hydronic

V = Volume Water

5-8Size

05 0 0 = 500,000 BTU/h input

07 5 0 = 750,000 BTU/h input

10 0 0 = 999,000 BTU/h input

12 5 0 = 1,250,000 BTU/h input

15 0 0 = 1,500,000 BTU/h input

17 5 0 = 1,750,000 BTU/h input

2 0 0 0 = 1,999,000 BTU/h input

9Fuel

N = Natural Gas

P = Propane

10Altitude

A = 0-10,000feet

11Location

C = Indoor and Outdoor

12Firing Mode

K = Two-stage(models 500 & 750) N =Three-stage(model 1000)

L = Four-stage(models 1250 - 2000)

13Revision

2 = Second version

14Heat Exchanger

B = Glass-linedCI / copper / brz trim (std. BWCV) C =Glass-linedcast iron / copper (standard BWCH) K = Bronze / copper

N = Glass-linedcast iron /cu-nickel

P = Glass-linedcast iron /cu-nickel /brz trim S = Bronze /cu-nickel

15Option Code

X = Standard unit

J = CSD-1,FM, IRI, IL

L = MN and LDS (Indoor units only)

16Pump Options

X = No Pump

H = Pump mounted, hard water pump N = Pump mounted, normal pump

S = Pump mounted, soft water pump

1.3Warranty

Bradford White, Copper Brute II appliances

are covered by a limited warranty. The owner should fill out the warranty registration card and return it to Bradford White.

All warranty claims must be made to an authorized Bradford White representative or directly to the factory. Claims must include the serial number and model (this information can be found on the rating plate), installation date, and name of the installer. Shipping costs are not included in the warranty coverage.

Some accessory items are shipped in separate packages. Verify receipt of all packages listed on the packing slip. Inspect everything for damage immediately upon delivery, and advise the carrier of any shortages or damage. Any such claims should be filed with the carrier. The carrier, not the shipper, is responsible for shortages and damage to the shipment whether visible or concealed.

1.4Dimensions

See Figure 1.

1.5Locating the Appliance

The appliance should be located to provide

clearances on all sides for maintenance and inspection.

It should not be located in an area where leakage of any connections will result in damage to the area adjacent to the appliance or to lower floors of the structure.

When such a location is not available, it is recommended that a suitable drain pan, adequately drained, be installed under the appliance.

The appliance is design certified by CSAInternational for installation on combustible flooring; in basements; in closets, utility rooms or alcoves.

Copper Brute II Boilers or Water Heaters must never be installed on carpeting. The location for the appliance should be chosen with regard to the vent pipe lengths and external plumbing. The unit shall be installed such that the gas ignition system components are protected from water (dripping, spraying, rain, etc.) during operation and service (circulator replacement, control replacement, etc.). When vented vertically, the

Copper Brute II must be located as close as practical to a chimney or outside wall. If the vent terminal and/ or combustion air terminal terminate through a wall, and there is potential for snow accumulation in the local area, both terminals should be installed at an appropriate level above grade.

The dimensions and requirements that are shown in Table 1 should be met when choosing the locations for the appliance.

REQUIRED RECOMMENDED

Page 6

BRADFORDWHITECORP.

 

 

 

 

SHIPPING WEIGHT

SIZE

lbs.

kg

500

425

193

750

505

229

1000

615

279

1250

675

306

1500

760

345

1750

825

375

2000

955

434

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

*Add 55 lbs. (25kg) for

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

pump-mountedunits.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

A

 

B

 

C

 

 

D

 

E

 

F

 

G

 

H

AIR

VENT

HORIZ.

 

in

in

in

 

in

in

in

in

in

CONN.

CONN.

VENT

SIZE

cm

cm

cm

cm

cm

cm

cm

cm

 

W

V

 

PIPE

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

500

33½

85

15¾

40

 

15

29¾

76

32¾

83

20

22

46

117

6

15

8

20

8

20

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

750

45½

116

21¾

55

 

15

29¾

76

32¾

83

20

22

58

147

6

15

10

25

8

20

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1000

57½

146

28¾

73

 

15

29¾

76

32¾

83

20

7

18

70

178

8

20

10

25

8

20

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1250

68

172

34

86

101/8 26

30¾

78

29½

75

22

22

80

203

8

20

12

30

8

20

1500

78½

199

39¾

101

101/8

26

30¾

78

29½

75

22

22

91

231

8

20

12

30

8

20

1750

89

226

44½

113

101/8

26

30¾

78

29½

75

22

22

101 256

8

20

14

36

8

20

2000

99½

253

49¾

126

101/8

26

30¾

78

29½

75

22

22

B

284

12 30

14

36

12

30

 

 

 

 

 

*Air and vent connections may be on top or back of the Copper Brute II, and are field convertible.

 

 

 

Dimensions in inches cm.

Figure 1. Dimensional Data.

COPPER BRUTE II (500 - 2000)

Page 7

 

 

 

 

1.6 Locating Pump-MountedWater Heater

with Respect to Storage Tank(s)

For best results, a pump-mountedCopper Brute II water heater should be located within 15 feet (4.6m) of the storage tank(s). The pump is sized for 30 feet (9.1m) of piping.

If the appliance must be installed with longer piping runs, then larger diameter pipe or tubing shall be used. Consult the factory for assistance.

1.7 Locating Pump-MountedBoiler with

Respect to Return/Supply Header

For the best results, a pump-mountedCopper Brute II Boiler should be located within 15 feet (4.6m) of the supply and return headers. The pump is sized for 30 feet (9.1m) of piping.

If the appliance must be installed with longer piping runs, then larger diameter tubing shall be used. Consult the factory for assistance.

APPLIANCE

CLEARANCE FROM

SERVICE ACCESS

SURFACE

COMBUSTIBLE MATERIAL

CLEARANCE

 

inches

cm

inches

cm

Left Side

1

2.5

24

61

Right Side

1

2.5

24

61

Top

1

2.5

12

30

Back

1

2.5

12**

30**

Front

1

2.5

36

91

Vertical

6*

 

 

 

(Category 1)

15.2*

 

 

Vent

 

 

 

 

Horizontal

per UL1738 venting

 

 

(Category 3)

system supplier’s

 

 

Vent

instructions

 

 

*1" (2.5cm) when b-ventis used.

**When vent and/or combustion air connects to the back, recommended clearance is 36" (91cm).

Table 1. Clearances.

1.8Locating Appliance for Correct

Horizontal Vent/Ducted Air Distance

From Outside Wall

The forced draft combustion air blower/blowers in the appliance has/have sufficient power to pull air and vent properly when the following guidelines for horizontal air and vent are followed (see Table 2).

NOTE: On all model sizes, the vent collar size is larger than the size of the vent pipe that can be used.

Vent collar size and horizontal pipe diameters can be found in Table 2. The larger vent collar size is to accommodate Category I (vertical) vent systems.

NOTE: When located on the same wall, the Copper Brute II combustion air intake terminal must be installed a minimum of 12" (30cm) below the exhaust vent terminal and separated by a minimum of

36 inches (91cm) horizontally.

The air intake terminal must be installed high enough to avoid blockage from snow, leaves and other debris.

 

 

 

HORIZONTAL

AIR COLLAR

 

 

 

 

 

 

 

VENT COLLAR

VENT PIPE

& PIPE

MAX. PIPE

 

MAX. NO.

SIDE WALL

SIDE WALL

SIZE

 

SIZE

DIAMETER

DIAMETER

LENGTH

 

OF ELBOWS

VENT

COMBUSTION

 

 

 

 

 

 

 

 

 

 

 

TERMINAL

AIR TERMINAL

 

in.

cm

in.

cm

in.

cm

ft.

m

 

 

PART NUMBER

PART NUMBER

500

8

20

6

15

6

15

50

15

 

3

CA001401

20260701

750

10

25

8

20

6

15

50

15

 

3

CA001402

20260701

1000

10

25

8

20

8

20

50

15

 

3

CA001402

20260703

1250

12

30

8

20

8

20

50

15

 

3

CA001403

20260703

1500

12

30

8

20

8

20

50

15

 

3

CA001403

20260703

1750

14

36

8

20

8

20

50

15

 

3

CA001403

20260703

2000

14

36

12

30

12

30

50

15

 

3

CA001404

20260706

 

 

 

 

Table 2.

Horizontal Vent / Combustion

Air Parameters.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Page 8

BRADFORDWHITECORP.

 

 

 

 

SECTION 2.

Venting and Combustion Air

2.1Combustion Air

Copper Brute II boilers and water heaters must

have provisions for combustion and ventilation air in accordance with Section 5.3, Air for Combustion

and Ventilation, of the National Fuel Gas Code, ANSI Z223.1, or Sections 7.2, 7.3 or 7.4 of CSA B149.1,

Installation Codes, or applicable provisions of the local building codes.

A Copper Brute II appliance may receive combustion air from the space in which it is installed, or it can be ducted directly to the unit from the outside. Ventilation air must be provided in either case.

2.1.1 Combustion Air From Room

In the United States, the most common requirements specify that the space shall communicate with the outdoors in accordance with method 1 or 2, which follow. Where ducts are used, they shall be of the same cross-sectionalarea as the free area of the openings to which they connect.

Method 1: Two permanent openings, one commencing within 12 inches (30 cm) of the top and one commencing within 12 inches (30 cm) of the bottom, of the enclosure shall be provided. The openings shall communicate directly, or by ducts, with the outdoors or spaces that freely communicate with the outdoors. When directly communicating with the outdoors, or when communicating to the outdoors through vertical ducts, each opening shall have a minimum free area of 1 square inch per 4000 Btu/hr (5.5 square cm/kW) of total input rating of all equipment in the enclosure. When communicating to the outdoors through horizontal ducts, each opening shall have a minimum free area of not less than

1 square inch per 2000 Btu/hr (11 square cm/kW) of

total input rating of all equipment in the enclosure. Table 3 shows data for this sizing method, for each

Copper Brute II model.

Method 2: One permanent opening, commencing within 12 inches (30 cm) of the top of the enclosure, shall be permitted. The opening shall directly communicate with the outdoors or shall communicate through a vertical or horizontal duct to the outdoors

or spaces that directly communicate with the outdoors and shall have a minimum free area of 1 square inch per 3000 Btu/hr (7 square cm/kW) of the total input rating of all equipment located in the enclosure. This opening must not be less than the sum of the areas of all vent connectors in the confined space.

Other methods of introducing combustion and ventilation air are acceptable, providing they conform to the requirements in the applicable codes listed above.

In Canada, consult local building and safety codes or, in absence of such requirements, follow CSA B149.1.

2.1.2 Intake Combustion Air

The combustion air can be taken through the wall, or through the roof. When taken from the wall, it must be taken from out-of-doorsby means of the Bradford White horizontal wall terminal (seeTable 2). When taken from the roof, afield-suppliedrain cap or an elbow arrangement must be used to prevent entry of rain water (see Figure 2).

Use single-wallgalvanized pipe, perTable 4, for the combustion air intake (seeTable 2 for appropriate size). Route the intake to the heater as directly as possible. Seal all joints with tape. Provide adequate hangers. The unit must not support the weight of the combustion air intake pipe. Maximum linear pipe

 

EACH OPENING*

SIZE

SQUARE INCHES

SQUARE CM

500

125

807

750

188

1213

1000

250

1613

1250

313

2020

1500

375

2420

1750

438

2826

2000

500

3226

*Net Free Area in Square Inches / Square cm

Area indicated is for one of two openings; one at floor level and one at the ceiling, so the total net free area could be double the figures indicated.

This chart is for use when communicating directly with the outdoors. For special conditions and alternate methods, refer to the latest edition of ANSI Z223.1.

Note: Check with louver manufacturers for net free area of louvers. Correct for screen resistance to the net free area if a screen is installed. Check all local codes applicable to combustion air.

Table 3. Combustion Air Openings.

Figure 2. Combustion Air and Vent Through Roof.

COPPER BRUTE II (500 - 2000)

Page 9

 

 

 

 

length allowed is 50 feet (15.2m). Three elbows have been calculated into the 50-foot(15.2m) linear run. Subtract 10 allowable linear feet (3.0m) for every additional elbow used (seeTable 2). When fewer than 3 elbows are used, the maximum linear pipe length allowed is still 50 feet (15.2m).

The connection for the intake air pipe is on the filter box. The Copper Brute II appliances may have venting and combustion air ducting attached to the top or the back. They are shipped with the connections at the top. For attaching either or both pipes to the back, the mounting flanges are reversible by removing the mounting screws and orienting the flanges in the desired position. Replace the screws after positioning flanges. Run a bead of silicone around the collar and slide the pipe over the collar. Secure with sheet metal screws.

In addition to air needed for combustion, air shall also be supplied for ventilation, including all air required for comfort and proper working conditions for personnel. The Copper Brute II loses less than 1 percent of its input rating to the room, but other heat sources may be present.

2.2 Venting

2.2.1 Vent Categories

Depending upon desired Copper Brute II venting, it may be considered a Category I or a Category III appliance. In general, a vertical vent system will

be a Category I system. However, in rare instances, a Copper Brute II’s vertical vent system may be considered Category III. In the U.S., the National Fuel

Gas Code (ANSI Z223.1-LatestEdition), or in Canada the CSA B149.1 (latest edition), defines a Category

I vent system, and includes rules and tables to size these vent systems. If the Copper Brute II’s vertical vent system does not satisfy the criteria for Category I venting, it must be vented as a Category III system.

All Copper Brute II vent systems which discharge horizontally (without the use of a power venter) are considered Category III vent systems.

2.2.2 Category I Vent

When vented as a category I appliance, the vent system must conform to the National Fuel Gas Code (ANSI Z223.1-LatestEdition) in the U.S., or in Canada, to CSA B149.1 (latest edition). The vent system must be sized and installed for a Category I

Fan-AssistedAppliance.

If chimney height is greater than 25 feet, or

TERM

 

DESCRIPTION

 

Pipe

 

Single-wallgalvanized steel pipe, 24 gauge

 

 

minimum (either insulated or non-insulated)

Joint

 

Permanent duct tape or aluminum tape

Sealing

 

 

 

 

 

Table 4. Required Combustion Air Piping Material.

if multiple units are vented into the same vertical vent, a barometric damper must be installed on each appliance, such that the flue draft does not exceed (negative) 0.1" w.c.

If using a power venter for any type of Category I venting, the draft should be set between (negative)

0.01 and 0.10" w.c.

2.2.3 Common Venting Systems

Copper Brute II units are Category I fan-assistedwhen vented vertically and adhering to all applicable codes. Copper Brute II units are not allowed to be vented into a common horizontal vent system, unless a properly sized vent fan is used, and the common vent system is properly designed by the vent fan manufacturer or a qualified engineer. When common venting Copper Brute IIfan-assistedunit with other appliances through one shared vertical duct called a

“common vent”, special care must be taken by the installer to ensure safe operation. In the event that the common vent is blocked, it is possible, especially for fan-assisteddevices, to vent backwards throughnon-operatingappliances sharing the vent, allowing combustion products to infiltrate occupied spaces.

If the appliances are allowed to operate in this condition, serious injury or death may occur.

WARNING

Operation of appliances with a blocked common vent may lead to serious injury or death. Safety devices must be implemented to prevent blocked common vent operation. If safe operation of all appliances connected to a common vent cannot be assured, including prevention of spillage of flue gasses into living spaces, common venting should not be applied, and appliances should each be vented separately.

It is for this reason that, in addition to following proper vent sizing, construction and safety requirements from the National Fuel Gas Code, ANSI Z223.1 or in Canada, from CSA B149.1 as well as all applicable local codes, it is required that installers provide some means to prevent operation with a blocked common vent. It is suggested that a blocked vent safety system be employed such that if the switch from one appliance trips due to excessive stack spill or backpressure indicating a blocked vent condition, that all appliances attached to the vent be locked out and prevented from operating. Note that the Copper Brute II is equipped with a blocked vent safety (pressure) switch, as shipped. However, this safety switch has only been designed and tested to be effective in installations where the Copper Brute II is vented separately and NOT common vented with other appliances. As an additional precaution, it is

recommended that a Carbon Monoxide (CO) alarm be installed in all enclosed spaces containing combustion

Page 10

BRADFORDWHITECORP.

 

 

 

 

 

 

U.S. Installations (see note 1)

Canadian Installations (see note 2)

A = Clearance above grade, veranda, porch, 12 inches (30 cm)

12 inches (30 cm)

deck, or balcony

 

B = Clearance to window or door that may be opened

4 feet (1.2 m) below or to side of opening;

36 inches (91 cm)

1 foot (30 cm) above opening

 

C =

Clearance to permanently closed window

See note 4

See note 5

D =

Vertical clearance to ventilated soffit located

 

 

 

above the terminal within a horizontal

See note 4

See note 5

 

distance of 2 feet (61cm) from the center

 

 

 

line of the terminal

 

 

E =

Clearance to unventilated soffit

See note 4

See note 5

F =

Clearance to outside corner

See note 4

See note 5

G =

Clearance to inside corner

See note 4

See note 5

H =

Clearance to each side of center line

 

3 feet (91 cm) within a height 15 feet above

 

extended above meter/regulator assembly

See note 4

the meter/regulator assembly

I =

Clearance to service regulator vent outlet

See note 4

3 feet (91 cm)

J =

Clearance to nonmechanical air supply inlet

 

 

 

to building or the combustion air inlet to

4 feet (1.2 m) below or to side of opening;

36 inches (91 cm)

 

any other appliance

1 foot (30 cm) above opening

 

K =

Clearance to a mechanical air supply inlet

3 feet (91 cm) above if within 10 feet (3 m)

6 feet (1.83 m)

 

 

horizontally

 

 

 

 

Vent termination not allowed in this location

L =

 

Vent termination not allowed in this location

for category IV appliances. A vent shall not

Clearance above paved sidewalk or paved

for category IV appliances. For Category III

terminate directly above a sidewalk or paved

 

driveway located on public property

appliances, vent must terminate at least 7

driveway that is located between two single

 

 

feet (2.13m) above the sidewalk or driveway.

family dwellings and serves both dwellings.

 

 

 

For Category III appliances that do not violate

 

 

 

the previous condition, vent must terminate

 

 

 

at least 7 feet (2.13m) above the sidewalk or

 

 

 

driveway.

M = Clearance under veranda, porch, deck,

See note 4

12 inches (30 cm) (see note 3)

 

or balcony

 

 

Notes:

1.In accordance with the current ANSI Z223.1 / NFPA 54 National Fuel Gas Code.

2.In accordance with the current CSA-B149.1Installation Codes.

3.Permitted only if veranda, porch, deck, or balcony is fully open on a minimum of two sides beneath the floor.

4.For clearances not specified in ANSI Z223.1 / NFPA 54, clearance is in accordance with local installation codes and the requirements of the gas supplier.

5.For clearances not specified in CSA-B149.1,clearance is in accordance with local installation codes and the requirements of the gas supplier.

Figure 3. Combustion Air and Vent Through Side Wall.