Bradford White Brute BNTH1000, Brute BNTV1000, Brute BNTH1200, Brute BNTV1200 Installation And Operation Instructions Manual

Installation and Operation Instructions Document 1266C

Installation and
Operation Instructions for

TM

Brute

Modulating Boiler Water Heater

Model BNTH1000 Model BNTV1000

1,000 MBTU/h 1,000 MBTU/h

Model BNTH1200 Model BNTV1200

1,200 MBTU/h 1,200 MBTU/h

FOR YOUR SAFETY: This product must be installed and serviced by a professional service technician,

qualied in hot water boiler and heater installation and maintenance. Improper installation and/or operation
could create carbon monoxide gas in ue gases which could cause serious injury, property damage, or
death. Improper installation and/or operation will void the warranty.

WARNING

If the information in this manual is not

followed exactly, a re or explosion may
result causing property damage, personal

injury or loss of life.

Do not store or use gasoline or other

ammable 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 re department.

Installation and service must be performed
by a qualied installer, service agency, or gas
supplier.

Assurez-vous de 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 inammables 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
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 qualié ou
par le fournisseur de gaz.

AVERTISSEMENT

H2360900C

Table of Contents

B

RADFORD WHITE

Section 1

GENERAL INFORMATION ....................................... 1

1.1 Introduction ............................................... 1

1.2 About the Touch Screen ........................... 1

1.3 Safety Notes ............................................. 3

1.4 ModelIdentication/Nomenclature ......... 3

1.5 Warranty ................................................... 4

1.6 BruteComponents .................................... 4

1.7 Dimensions ............................................... 5

1.8 Unpacking ................................................. 5

Section 2

LOCATING THE APPLIANCE .................................. 6

2.1 LocatingtheAppliance ............................. 6

2.2 Correct Vent Distance

  fromOutsideWallorRoofTermination ..... 6

Section 3

VENTING AND COMBUSTION AIR ......................... 7

3.1 CombustionAir ......................................... 7

 3.1.1 CombustionAirFromRoom ..................... 7

 3.1.2 DuctedCombustionAir ............................. 8

3.2 Venting ...................................................... 9

 3.2.1 CommonVenting ...................................... 9

 3.2.3 VentingRequirementsUniquetoCanada 9

3.3 LocatingtheVentandCombustionAir

  Terminals ................................................ 10

 3.3.1 SideWallVentTerminal .......................... 10

 3.3.2 SideWallCombustionAirTerminal ......... 12

 3.3.3 VerticalVentTerminal ............................. 13

 3.3.4 VerticalCombustionAirTerminal ............ 13

 3.3.5 InstallationsintheCommonwealthof

Massachusetts ........................................ 13

3.4 CommonVentTest ................................. 13

3.5 Outdoor Installation ................................ 14

3.6 CondensateTrap .................................... 14

Section 4

GAS SUPPLY AND PIPING ................................... 15

4.1 GasSupplyandPiping ........................... 15

  Distance&PipeSize,Tables .................. 16

Section 5

PUMP REQUIREMENTS ....................................... 17

5.1 BruteBoilerFlowandHead

  Requirements ......................................... 17

5.2 BruteWaterHeaterFlowand ....................

  HeadRequirements ................................ 17

Section 6

WATER CONNECTIONS ....................................... 18

Section 6A - BNTH Systems................................... 18

6A.1 BNTHSystemPiping:HotSupply

Connections ............................................ 18

6A.2 BNTHColdWaterMake-Up ................... 18

6A.3 BNTHFreezeProtection ........................ 19

6A.4 BNTHSuggestedPipingSchematics ..... 19

6A.5 CondensateTrap .................................... 19

Section 6B - BNTV Systems................................... 25

6B.1 BNTV Water Quality ............................... 25

6B.2 BNTVPipingRequirements .................... 25

6B.3 BNTVColdWaterMake-Up .................... 26

6B.4 BNTVFreezeProtection ......................... 26

6B.5 BNTVSuggestedPipingSchematics ..... 26

6B.6 BNTVSuggestedPumps ........................ 27

6B.7 CondensateTrap .................................... 27

Section 7

ELECTRICAL CONNECTIONS .............................. 28

7.1 MainPower ............................................. 28

7.2 PumpConnections ................................. 28

7.3 24VACTransformerwithIntegral

  CircuitBreaker ........................................ 30

7.4 SignalConnections ................................. 30

7.5 OptionalLowWaterCutOff(LWC O ) .... 30

7.6 OtherOptionalFieldConnections .......... 30

7.7 LadderDiagrams .................................... 31

  WiringDiagrams ..................................... 32

Section 8

USING THE TOUCH SCREEN AND GAUGES...... 34

8.1 TheTouchScreenandGaugesontheFront

of the Brute ............................................. 34

8.2 UsingtheTouchScreen .......................... 34

8.3 WhileOperating–CheckingLead/Lag

  OperatingInformation ............................. 36

8.4 CheckingLead/LagMaster ..................... 36

8.5 WhileOperating-CheckingIndividual

  Parameters ............................................. 37

8.6 CheckingIndividualDetails .................... 38

8.7 ConguringParametersonIndividual

Controllers .............................................. 38

8.8 VericationProcessforSafety-Related

  Parameters ............................................. 39

8.9 OptionalVariableSpeedPumpControl ...... 41

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Brute

TM

RUTE. BOILERS AND VOLUME WATER HEATERS, 1,000 & 1,200 MBTU/h

Section9–

SETUP AND CONFIGURATION ............................ 42

9.1 ReviewofLead/LagControlSystem ...... 42

10.3 ShuttingDowntheBrute ......................... 87

10.4 RestartingtheBrute ................................ 87

 9.1.1 AboutLead/LagOperation ..................... 42

 9.1.2 Lead/LagModulationCycle .................... 43

 9.1.3 BNTHLead/LagwithIndirect

  DomesticHotWater ................................ 44

9.2 ConnectionTerminals ............................. 44

9.3 BruteSystemCongurations ................ 44-52

9.4 Installation Jobs ...................................... 53

 A NoteforSystemsUsingCommon

  Venting .................................................... 53

 B NamingtheControllers ........................... 53

 C MakeOneControltheLead/Lag

Master ..................................................... 54

 D DisabletheLead/LagMasterFunction

  ontheLead/LagSlaves .......................... 55

 E SetuptheModbusControlAddressing .. 56

 F SettheFlapValveIDs ............................ 57

 G DisconnectUnusedOperator

Interfaces ................................................ 61

 H ConnecttheModbusWiring ................... 61

Section 11

MAINTENANCE ..................................................... 88

11.1 SystemMaintenance .............................. 88

11.2 Maintenance Notes ................................. 88

11.2.1 Burner ..................................................... 88

 11.2.2 ModulatingGasValve/Venturi ................ 88

11.2.3 Controllers .............................................. 89

 11.2.4 IgnitorAssembly ..................................... 89

 11.2.5 FlameSensor ......................................... 89

 11.2.6 TransformerwithIntegral

  CircuitBreaker ........................................ 89

 11.2.7 Blower ..................................................... 90

 11.2.8 HeatExchangerCoils ............................. 90

 11.2.9 GasPressureSwitches(optional) .......... 90

11.2.10Natural/PropaneGasConversion ......... 91

 11.2.11 CondensateTrap .................................. 91

 11.2.12 Battery(Date&TimeBack-Up) ............ 91

 I SettheParametersUsedbythe

  Lead/LagSystem .................................... 62

  Aboutthe“TimeofDay”Function ........... 66

 J InstalltheSystemSensorandAdjust

  theSetpoint ............................................ 66

 K SettheLead/LagOutdoorResetand

  WarmWeatherShutdown ....................... 66

  About“OutdoorReset” ........................... 67

 L BuildingAutomationorMultipleBoiler

  ControlThermostatDemand ................. 68

 M BuildingAutomationorMultipleBoiler

  4-20mASetpointControl ....................... 68

 N BuildingAutomationorMultipleBoiler

  4-20mAModulationControl .................... 69

O Combustion Setup Procedure ............. 69

Section 12

TROUBLESHOOTING ........................................... 92

12.1 PotentialSetupandSynchronization

  Problems ................................................ 92

 12.1.1 ControllerSynchronization ..................... 92

 12.1.2 FlapValveStatusChecks ....................... 93

12.2 AboutLockouts,Holds,andAlerts .......... 93

 12.2.1 RespondingtoaLockout,Hold,

or Alert .................................................... 93

 12.2.2 ViewingtheLockoutandAlert

Histories .................................................. 94

12.3 TroubleshootingTables(allcodes)......96-110

12.4 DiagnosticTestsandInput/Output

Indicators ............................................... 111

 P SettingtheDateandTimeonthe

  SystemDisplay ....................................... 74

9.5 SetupforDomesticHotWaterona

  Lead/LagSystem .................................... 75

SetupType1 ........................................... 75

SetupType2 ........................................... 76

12.5 Lead/LagSlaveDiagnostics .................. 112

12.6 Statistics ................................................11 2

12.7 Analysis .................................................11 2

12.8 ControlSnapshot ................................... 113

12.9 OperatingSequence .............................. 113

SetupType3 ........................................... 77

9.6 GatewayConnectionstoa

  BuildingAutomationSystem ................... 78

9.7 InstallerParameters .......................... 79-85

Section 13

REPLACEMENT PARTS .......................................116

13.1 GeneralInformation ............................... 116

13.2 Parts List ................................................ 116

Section 10 -

13.3 Parts Illustrations .................................. 122

INITIAL STARTUP INSTRUCTIONS ...................... 86

10.1 FillingtheBoilerSystem ......................... 86

ii

10.2 InitialBurnerOperation ........................... 87

B

RADFORD WHITE

B

Brute

TM

RUTE. BOILERS AND VOLUME WATER HEATERS, 1,000 & 1,200 MBTU/h

Page 1

Section 1
GENERAL INFORMATION

1.1 Introduction

This manual includes information which will help you
to install, operate, and maintain the Brute 1000 &
1200 systems. Please read this manual completely
before proceeding with the installation. If you have
any questions regarding this equipment, please
consult the Bradford White factory, or a local factory
representative. Many operating problems are caused
by improper installation.

Touch Screen Display

(behind the plastic cover

which slides downward)

Pressure and
temperature
gauge

Power switch

If eld conditions require modications, consult

the factory representative before initiating such

modications.

1.2 About the Brute’s
Touch Screen Display

The Brute 1000 & 1200 have an advanced control
system which can perform many functions. This is
part of the reason why the Brute can deliver such
outstanding performance. You can access the
control system using the ‘Touch Screen Display’
(see Section 8). There are several “branches” in the
control software, and many different display screens.
For clarity, throughout this manual we have made a
special effort to show you how to reach each of the
important setup and operating functions. We have
done this in two ways:

• In many cases, we have shown you the actual
touch screen display that you will see while
performing a function.

• Sometimes, instead of showing the screens,
we have just listed the series of choices you
should make in order to reach the section you
want.

The arrangement of the control software is actually
quite logical, and after you have worked with it a bit,

you will not have any problems “nding your way

around.” We just want to give you some help with

the rst part of the process, when you are “getting

used to” the control system .

WARNING

Brute 1000 & 1200 units must be installed
in accordance with the procedures detailed
in this manual, or the Bradford White
warranty will 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 CSA B149.1
Natural Gas and Propane Gas Installation
Code, and/or local codes. Where required
by the authority having jurisdiction, the
installation of Brute 1000 & 1200 units
must conform to the Standard for Controls
and Safety Devices for Automatically
Fired Boilers, ANSI/ASME CSD-1. Any

modications to the boiler, its gas controls,

or wiring may void the warranty.

Later in this manual, we will detail information on the
setup and operating procedures. There are a couple
of concepts you will need to understand right from
the start.

• Each boiler has two controllers (internal
electronic burner controllers) and two burners,
as shown in Figure 1.

• A single Touch Screen is used to communicate
with these two controllers.

Boiler 1

Touch
Screen

Primary
controller

Gas
valve

Gas
valve

Secondary
controller

Primary
burner

Secondary
burner

Figure 1. Control Arrangement in a Single-Boiler

Page 2

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RADFORD WHITE

Installation

• Each controller and burner work together. Each
boiler includes two of these controller/burner
combinations.

Notice the different terms we are using here.

The term boiler refers to the whole appliance –
the complete Brute 1000 & 1200. Each boiler
includes two separate controller/burner pairs.

• Brute 1000 & 1200 units are always set up for
“Lead/Lag” operation. The term “Lead/Lag”
means that, as the heating load increases, the
control system brings additional burners on
automatically.

Touch
Screen

Boiler 1

Addr1Addr2Addr3Addr4Addr5Addr6Addr7Addr

Lead Lag
Master and
Slave 1

Slave 2

Boiler 2

Slave 3

Slave 4

Boiler 3

Slave 5

Slave 6

Boiler 4

8

Slave 7

Slave 8

burner pairs will refer back to that single value.

On the Touch Screen, from the ‘home’ screen

you can reach all of the Lead/Lag functions by
pressing the View Lead Lag button. Figure 3.

• INDIVIDUAL FUNCTIONS, Other functions
apply only to each separate controller/burner
pair. As an example, each controller/burner has
a name, and this can be changed.

The ‘home’ screen on the Touch Screen will

show icons for each of the controller/burner
pairs connected to the system. To reach one of
the functions for an individual controller/burner,
press the icon for that controller/burner. On the

following screen, press the Congure button.
This will take you to all of the conguration

options for that individual controller/burner.

Figure 2. Lead/Lag Arrangement in a Multiple-

Boiler Installation

On a multiple-boiler installation, each of the individual
boilers is still set up as shown in Figure 2 above, but
the controller/burner pairs on all of the boilers are
arranged in a “daisy chain.”
Up to four boilers, with up to eight controller/burner
pairs, can be connected in this way.

In all Brute 1000 & 1200 multiple-boiler installations,
just one of the Touch Screens is active. It can
communicate with all of the controller/burner pairs in
the system, so it displays information from all of the
burners. A single system sensor provides the control
input for the system.

All Brute 1000 & 1200’s that are set up as a single
boiler will still uses a Lead/Lag operation. If the

heating load becomes too great for the rst burner,

the control system automatically starts the second
burner.

To work with this control system, you will need to
understand the difference between two kinds of
control functions:

• SYSTEM FUNCTIONS, Some of the functions
control all of the controller/burner pairs, working
together as part of the Lead/Lag system. As
an example, the setpoint for a whole multiple­boiler system is set by a single value: “Central
Heat Lead/Lag Setpoint.” By changing this one
value, you change the setpoint used by the
whole system. The action of all of the controller/

Press here for
system setup

Press here to
see current
Lead/ Lag
performance

Press here
for individual
controller/
burner pairs

Press here
for Lead/ Lag
setup

Figure 3. Going to Lead/Lag and Individual

Functions

Note – For individual functions, if you want to

make a change on all of the controller/burner
pairs in the system, you will have to go to each
controller/burner separately and repeat the
change for each of them. If there are eight
controller/burners in the system, and you want
to make the same change on all of them, go
to each of the eight controller/burner pairs
separately.

As we go through the explanations in this manual,
we will point out whether a control function affects
the whole Lead/Lag system, or just an individual
controller/burner pair.

This has been just a quick introduction, but this
manual includes two longer sections that will help you
to work with the control system:

B

Brute

TM

RUTE. BOILERS AND VOLUME WATER HEATERS, 1,000 & 1,200 MBTU/h

• Section 8 – “Using the Touch Screen and the
Gauges.”

This section will explain how to “Navigate”

through the Touch Screen : how to enter and
change values, and so on.

• Section 9 – “Setup and Conguration”

The rst part of this section includes a more

complete explanation of the Lead/Lag system.

Carbon Monoxide Hazard

Improper adjustment of the burners may lead to poor
combustion quality, increasing the amount of carbon
monoxide produced. Excessive carbon monoxide
levels may lead to personal injury or death.

The rest of the section includes detailed setup
instructions.

If you are not familiar with the control system, the
installation and setup process will go much more
smoothly if you read through these three sections
before beginning work.

Electrical Shock Hazard

Electrical shock can cause severe injury, death or
property damage. Disconnect the power supply before
beginning installation or changing the wiring to prevent
electrical shock or damage to the equipment. It may

1.3 Safety Notes

be necessary to turn off more than one power supply
disconnect.

All electrical wiring is to be done in accordance with

WARNING

Fire or Explosion Hazard

Improper conguration can cause fuel buildup and

explosion. Improper user operation may result in

local codes, or in the absence of local codes, with:

1) The National Electrical Code ANSI/NFPA No.
70 - latest Edition, or 2) CSA STD. C22.1 “Canadian
Electrical Code - Part 1.” This appliance must be
electrically grounded in accordance with these codes.

property loss, severe physical injury, or death.

Any changes to safety-related conguration parameters

must only be done by experienced and/or licensed
burner/boiler operators and mechanics.

If any odor of gas is detected, or if the gas burner does

1.4 ModelIdentication

Consult the rating plate on the unit. The following
information describes the model number structure.

not appear to be functioning in a normal manner, close
the main gas shutoff valve. Do not shut off the power
switch. Contact your heating contractor, gas company,
or factory representative.

The Brute is protected against over-pressurization. A
pressure relief valve is included with each Brute 1000 &

1200.

The inlet gas pressure to the appliance must not exceed
13” W.C. (3.2 kPa).

All installations must be made in accordance with 1)
American National Standard Z223.1/NFPA54-Latest
Edition “National Fuel Gas Code” or 2) CSA B149.1
“Natural Gas and Propane Installation Code” and with the
requirement of the local utility or other authorities having
jurisdiction. Such applicable requirements take precedence
over the general instructions contained herein.

(1-3) Model Series Designation
B N T = Brute

(4) Usage
H = Hydronic
V = Volume Water

(5-8) Size
1 0 0 0 = 1,000,000 BTU/hr input
1 2 0 0 = 1,200,000 BTU/hr input

(9) Fuel
N = Natural Gas
P = LP Gas

(10) Options Code
J = CSD1 Version
X = Standard Unit

(11) Pump Options
X = No pump

(12) Revision
1 = First version

Page 3

WARNING

WARNING

(conguration available for all sizes)

Model Nomenclature

1 2 3 4 5 6 7 8 9 10 11 12

B N T

SERIES

B N T

USAGE

H - HYDRONIC

V - VOLUME

WATER

SIZE

MBTU/h

1 0 0 0
1 7 0 0

FUEL

N - NATURAL

P - PROPANE

OPTIONS CODE

J - CSD1

X - STANDARD

PUMP OPTIONS

X - NO PUMP

1

REVISION

1 - FIRST

Page 4

1.5 Warranty

Bradford White’s Brute 1000 & 1200 are covered by
a limited warranty. The owner should complete the
warranty registration at:

http://www.BradfordWhite.com

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

Some accessory items may be shipped in separate
packages. Verify receipt of all packages listed on

1.6 Brute Components

B

RADFORD WHITE

the packing slip. Inspect everything for damage
immediately upon delivery, and advise the carrier
of any shortages or damage. Any such claims

should be led with the carrier. The carrier, not
the shipper, is responsible for shortages and
damage to the shipment whether visible or
concealed.

The Touchscreen does have an internal battery for
back-up of the date and time settings. To access the
battery, the front panel and the Touchscreen must
be removed so that the small plastic door on the
back of the touchscreen can be accessed.

The battery is a CR2032 ‘coin type’ battery and
has an expected life of 10 years.

Protective Cover
(slides downward)

Pressure and
temperature
gauge

Blower 1
(under bezel)

Automatic
gas valves

Manual
gas valve

Touchscreen

Power switch

Ducted air inlet

Electrical box

PRV and

ow switch

Outlet
temperature
sensors

Inlet
temperature
sensors

Blower 2

Figure 4. Components

Condensate
trap

Leveling feet

B

Brute

TM

RUTE. BOILERS AND VOLUME WATER HEATERS, 1,000 & 1,200 MBTU/h

Page 5

Figure 5. Dimensions

1.7 Dimensions

The dimensions are shown in Figure 5

1.8 Unpacking

The Brute is shipped in a single crate. The standard
outdoor/system sensor kit is packed inside the same
crate.

1. Remove all packing and tie-down materials.

2. Check that the outdoor/system sensor kit is
included.

DANGER

• Water temperature over 125°F (52°C) can
cause severe burns instantly or death from
scalds.

• Children, disabled and elderly are at highest
risk of being scalded.

• See instruction manual before

setting temperature at
heating appliance.

• Feel water before

bathing or showering.

• If this appliance is used
to produce water that
could scald if too hot,

such as domestic hot water
use, adjust the outlet
control (limit) or use temperature limiting

valves to obtain a maximum water
temperature of 125°F (52°C).

Page 6

Section 2
LOCATING THE APPLIANCE

2.1 Locating the Appliance

The Brute 1000 and 1200’s may be installed indoors
or outdoors. The unit may only be installed outdoors
in a location which will never experience freezing
temperatures. Choose a location for the unit which
allows clearances on all sides for maintenance and
inspection. See Table 1. Always install the unit on a

rm, level surface. Level the unit using the leveling

feet.

The unit 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 oors

of the structure.

When this type of location is not available, install a
suitable drain pan, adequately drained, under the
appliance.

The appliance is design-certied by CSA­International for installation on combustible ooring;
in basements; in closets, utility rooms or alcoves.

Brute boilers 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 Brute must be located as
close as practical to the vertical section of the vent.
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 or the maximum expected snow line.

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

B

RADFORD WHITE

APPLIANCE SUGGESTED SERVICE ACCESS CLEARANCE

SURFACE INCHES CM

Front 24 60.9

Left Side 12 30.5

Right Side 18 45.7

Back 24 60.9

Top 24 60.9

APPLIANCE REQUIRED CLEARANCE TO COMBUSTIBLES

SURFACE INCHES CM

Front 2 5.1

Left Side 0 0

Right Side 0 0

Back 0 0

Top 8 20.3

Vent 1 2.6

Table 1. Clearances

Installations in the U.S. require exhaust vent pipe that is PVC or
CPVC complying with ANSI/ASTM D1785 F441, polypropylene
complying with ULC-S636, or stainless steel complying with
UL1738. Installations in Canada require exhaust vent pipe that is

certied to ULC S636.

Intake (air) pipe must be PVC or CPVC that complies with ANSI/
ASTM D1785 F441, ABS that complies with ANSI/ASTM D1527,
stainless steel, or galvanized material.

Closet and alcove installations do not allow the use of PVC under
any circumstances

To calculate max equivalent length, measure the linear feet of the
pipe, and add 5 feet (1.5 m) for each elbow used.

6” 100 30

Brute

STANDARD MAX EQUIV.

VENT FT. M

Table 2. Vent / Air Pipe Sizes

2.2 Correct Vent Distance from
Outside Wall or Roof Termination

The forced draft combustion air blower in the

appliance has sufcient power to vent properly when

the guidelines in Table 2 are followed.

Note - When located on the same wall, the Brute
combustion air intake terminal must be installed a
minimum of 12” below the exhaust terminal. There
must also be a minimum horizontal distance from
intake to the exhaust terminal of 36.”

For the concentric vent terminal kit (optional), follow
the installation instructions included with the kit.

B

Brute

TM

RUTE. BOILERS AND VOLUME WATER HEATERS, 1,000 & 1,200 MBTU/h

Page 7

Section 3
VENTING AND COMBUSTION AIR

3.1.1 Combustion Air From Room

In the United States, the most common
requirements specify that the space shall
communicate with the outdoors in accordance with

3.1 Combustion Air

Brute boilers and water heaters must have provisions
for combustion and ventilation air in accordance
with the applicable requirements for Combustion
Air Supply and Ventilation in the National Fuel Gas

Code, ANSI Z223 1; or in Canada, the Natural Gas

and Propane Installation Code, CSA B149.1. All
applicable provisions of local building codes must
also be adhered to.

A Brute 1000 & 1200 can take combustion air
from the space in which it is installed, or the
combustion air can be ducted directly to the unit.
Ventilation air must be provided in either case.

Method 1 or 2. (See the following descriptions.)
Where ducts are used, they shall be of the same
cross-sectional area as the free area of the
openings to which they connect.

Method 1: Two permanent openings, one
commencing within 12” (300 mm) of the top and
one commencing within 12” (300 mm) 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 (550 square mm/kW) of total input rating of all

PVC CPVC Stainless Steel Polypropylene

Model Ducted Air Exhaust Ducted Air Exhaust Ducted Air Exhaust Ducted Air Exhaust

1,000 CA008100 CA008300 CA008100 CA008300 CA008200 D2004500 CA008500 CS008500

1,200 CA008100 CA008300 CA008100 CA008300 CA008200 D2004500 CA008500 CS008500

Table 3a - Horizontal Terminations for Indoor Use

PVC CPVC Stainless Steel Polypropylene

Model Ducted Air Exhaust Ducted Air Exhaust Ducted Air Exhaust Ducted Air Exhaust

1,000 CA008400 CA008300 CA008400 CA008300 CA008500 CA008500 CA008500 CA008500

1,200 CA008400 CA008300 CA008400 CA008300 CA008500 CA008500 CA008500 CA008500

Table 3b - Vertical Terminations for Indoor Use

Model Ducted Air Exhaust

1,000 CA008700 CA008900

1,200 CA008700 CA008900

Table 3c - Outdoor Terminations

Material United States Canada

ABS ANSI/ASTM D1527 The air pipe material must be chosen based upon

PVC, sch. 40 ANSI/ASTM D1785 or D2665

CPVC, sch. 40 ANSI/ASTM F441

Single wall galv. steel 26 gauge

Polypropylene ULC-S636 Class 2C

the intended application of the boiler, and must
be installed according to the vent manufacturer’s
installation instructions.

Table 3. Tables 3 A thru C not linked

Table 4. Required Combustion Air Pipe Material

Page 8

B

RADFORD WHITE

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 (1100 square mm/kW)
of total input rating of all equipment in the enclosure.

Method 2: One permanent opening, commencing
within 12” (300 mm) 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 (734 square
mm/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 conned 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 CAN/
CSA B149.

allowable linear ft. (1.5 m) for every elbow used.

When using polypropylene or stainless steel

materials in horizontal duct congurations, a single

elbow must be installed on the end of the air inlet
to act as an outdoor terminal. In vertical duct
applications, two elbows must be installed on the
end of the inlet to act as a vent terminal. In both
installation types, Bradford White part number
CA008500 (for Model 1,000 and 1,200) can then be
installed into the elbow to prevent foreign objects
from entering the air inlet system. The elbow(s)
required to complete the vent terminal is not
included.

The connection for the intake air pipe is on the back
panel.

*

*

*

*

*

3.1.2 Ducted 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-doors by means of a horizontal
wall terminal, shown in Table 3a. See Table 2 to
select the appropriate diameter air pipe. When taken

from the roof, a eld-supplied rain cap or an elbow

arrangement must be used to prevent entry of rain
water. (See Figure 6).

Use ABS, PVC, CPVC, polypropylene, stainless
steel, or galvanized pipe for the combustion air
intake. (See Table 5.) The intake must be sized per
Table 2. Route the intake to the boiler as directly
as possible. Seal all joints. Provide adequate
hangers. The unit must not support the weight of
the combustion air intake pipe. The maximum linear
pipe length allowed is 100 feet (39 m). Subtract 5

Installation Standards

Material United States Canada

Stainless steel UL 1738 Venting must be ULC-S636 certied for use as

PVC*, sch 40 ANSI/ASTM D178

CPVC, sch 40 ANSI/ASTM F441

Polypropylene UL-S636 Class 2C

* PVC cannot be used for the rst 12 inches of vent material

In Canada, refer to CAN/CSA B199.1

*

*

Figure 6. Combustion Air and Vent Through Roof

venting material. The venting material class must
be chosen based upon the intended application
of the boiler, and must be installed according to

the maximum ue gas temperature and the vent

manufacturer’s instructions.

Table 5. Required Exhaust Vent Material

B

Brute

TM

RUTE. BOILERS AND VOLUME WATER HEATERS, 1,000 & 1,200 MBTU/h

Page 9

In addition to air needed for combustion, air shall
also be supplied for ventilation, including air required
for comfort and proper working conditions for
personnel. Refer to the applicable codes.

3.2 Venting

WARNING

Selection of improper vent materials for installations
that are installed in closets, or will be operated
in high ambient temperature levels, may lead to
property damage, personal injury, or death.

WARNING

A 12” or 305 mm section of CPVC must be
connected directly to the boiler before a PVC vent
system can be used. Connecting PVC directly to the
boiler’s ue collar may cause vent failure, leading to
property damage, personal injury, or death.

WARNING

Failure to use the appropriate vent material,
installation techniques, or glues and sealants could
lead to vent failure causing property damage,
personal injury or death.

WARNING

All venting must be installed according to this
manual and any other applicable local codes,
including but not limited to, ANSI Z223.1/NFPA 54,
CSA B149.1, CSAB149.2 and ULC-S636. Failure to
follow this manual and applicable codes may lead to
property damage, severe injury, or death.

TheuetemperatureoftheBrutechanges

dramatically with changes in operating water
temperature. Therefore, it is necessary to assess
the application of the boiler to determine the

requiredcertiedventclass.IftheBruteis

installed in an application where the ambient
temperature is elevated, and/or installed in
a closet/alcove, CPVC, polypropylene, or
stainless steel material is required. If the
system temperatures are unknown at the time of
installation, class IIC or higher venting material
is recommended.

The Brute is a Category IV appliance and may be
installed with PVC, CPVC that complies with ANSI/
ASTM D1785 F441, or polypropylene that complies
with ULC-S636 Class 2C, or a stainless steel venting
system that complies with the UL 1738 Standard.
(See Table 5.) The unit’s vent can terminate through
the roof, or through an outside wall.

The use of polypropylene vent material has
been accepted by CSA for use with exhaust and
combustion. The polypropylene vent manufacturer
shall have ULCS636 Class 2C approval or higher

with a recognized listing agency for all components
used in the venting system. All components used
must be from the same manufacturer and designed
for use with exhaust temperatures of 195°F
(90°C) or higher. When installing polypropylene
vent systems, please, refer to the vent supplier’s
installation instructions for proper installation
techniques.

When using PVC/CPVC for the vent material, the

rst 12 inches or 305 mm of vent must be connected

to the CPVC section included with the Brute. The
CPVC vent section included with the Brute may

be broken by CPVC ttings if necessary, but never

reduced in total length. See Table 2 to select the
appropriate vent pipe diameter.

When using polypropylene, all vent material must be
from the same manufacturer and UL-S636 rated.

All installations must be done following the vent
supplier’s recommended installation techniques. If
these are not available, refer to the Bradford White
recommendations for the material used.

The vent pipe must pitch upward, toward the
vent terminal, not less than 1/4” per foot, so that
condensate will run back to the Brute to drain.
Route the vent pipe to the heater as directly as
possible. Seal all joints. Provide adequate hangers
as required in the venting system manufacturer’s
Installation Instructions. Horizontal portions of
the venting system must be supported to prevent
sagging and may not have any low sections that
could trap condensate. The unit must not support
the weight of the vent pipe. Please see Table 2 for
proper diameter vs. length allowed.

3.2.1 Common Venting

A single vent that is shared by multiple Brute’s must
be engineered by a competent venting specialist,
and could involve the selection of draft inducing
equipment, hardware and controls to properly

balance ue gas pressures. Do not common
vent Brute’s unless the vent system meets this
requirement. Brute’s are never permitted to
share a vent with Category I appliances.

3.2.2 Venting Requirements Unique to
Canada

Brute 1000 & 1200 boilers and water heaters are
Vent Category IV appliances. Per the requirements
of CAN/CSA-B149.1, only BH vent systems can be
connected to these units and such vent systems,

either ULC S636 certied stainless steel or other
ULC S636 certied BH vent (eg. plastics) must
be installed per the vent manufacturer’s certied

installation instructions.

Page 10

It is the responsibility of the appropriately licensed
technician installing this Brute to use ULC

S636 certied vent material consistent with the

requirements as described in the Venting and
Combustion Air section.

Class I venting systems are suitable for gas-red
appliances producing ue gas temperature of more

than 135°C, but not more than 245°C.

Class II venting systems are suitable for gas-red
appliances producing ue gas temperatures of 135°C

or less.

Class II venting systems are further classied into

four temperature ratings as follows:

A Up to and including 65°C

B Up to and including 90°C

C Up to and including 110°C, and

D Up to and including 135°C

B

RADFORD WHITE

Flue Gas Sampling Port -

It is also the responsibility of the installer to ensure

that a ue gas sampling port is installed in the vent
system. This ue gas sampling port must be installed
near the ue connection of the Brute: within 2 feet
of the ue connection. There is no ue gas sampling

port internal to the Brute, so one must be installed

in the vent system external to the Brute. A ue gas

sampling port available as a component of the ULC

S636 certied vent system is preferred. However, if
one is not available with the certied vent system,

Bradford White suggests using a tee with the branch

connection sized to allow for insertion of a ue gas

analyzer probe. The branch connection must be
resealable with a cap or other means to ensure the
vent system remains sealed. (See Figure 7.)

Consideration must be given to the placement and

orientation of the ue gas sampling port to ensure
that condensate is free to ow back into the Brute

and not collect anywhere in the vent system -

including in the ue gas sampling port.

Exhaust Vent Terminal -

An exhaust vent terminal must be installed. If an
exhaust vent terminal is not available with the

certied vent system, Bradford White suggests
the use of a coupler tting from the certied vent

system into which the vent terminal screen can be
installed. Be sure to install and terminate both vent
and combustion air pipes per the instructions in this
section.

Figure 7. Test Port

3.3 Locating the Vent and Combustion
Air Terminals

3.3.1 Side Wall Vent Terminal

The appropriate Bradford White side wall vent
terminal must be used. The terminal must be located
in accordance with ANSI Z223.1/NFPA 54 and
applicable local codes. In Canada, the installation
must be in accordance with CSA B149.1 or .2 and
local applicable codes.

Consider the following when installing the terminal:

1. Figure 8 shows the requirements for
mechanical vent terminal clearances for the
U.S. and Canada.

2. Vent terminals for condensing appliances or
appliances with condensing vents are not
permitted to terminate above a public walkway,
or over an area where condensate or vapor
could create a nuisance or hazard.

3. Locate the vent terminal so that vent gases
cannot be drawn into air conditioning system
inlets.

4. Locate the vent terminal so that vent gases
cannot enter the building through doors,
windows, gravity inlets or other openings.
Whenever possible, avoid locations under
windows or near doors.

5. Locate the vent terminal so that it cannot

be blocked by snow. The installer may
determine that a vent terminal must be
higher than the minimum shown in codes,

B

Brute

TM

RUTE. BOILERS AND VOLUME WATER HEATERS, 1,000 & 1,200 MBTU/h

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 See note 6 See note 6

B= Clearance to window or door that may be Direct vent only: 12 inches (30 cm); 36 inches (91 cm)
opened Other than Direct vent: 4 ft (1.2m) below or to

side of opening; 1 ft (30 cm) above opening

C= Clearance to permanently closed window See note 4 See note 5

D= Vertical clearance to ventilated soft located

above the terminal within a horizontal See note 4 See note 5
distance of 2 feet (61 cm) from the center
line of the terminal

E= Clearance to unventilated soft 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

extended above meter/regulator assembly See note 4 above the meter/regulator assembly

I= Clearance to service regulator vent outlet See note 4 3 feet (91 cm)

J= Clearance to nonmechanical air supply Direct vent only: 36” (91cm)
inlet to building or the combustion air inlet Other than Direct vent: 4 ft (1.2m) below 36 inches (91 cm)
to any other appliance or to side of opening; 1 ft (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

L= Clearance above paved sidewalk or paved Vent termination not allowed in this location 7 ft (2.1 m)
driveway located on public property for category IV appliances. See note 5

M= Clearance under veranda, porch, deck, See note 4 12 inches (30 cm)

or balcony See note 5

Notes:

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

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

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

4. For clearances not specied 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 specied in CAN/CSA-B149, clearance is in accordance with local installation codes and the requirements of the
gas supplier.

6. IMPORTANT: All terminals must be placed so that they remain a minimum 12” above expected snow line. Local codes may have

more specic requirements, and must be consulted.

Page 11

Figure 8. Combustion Air and Vent Through Side Wall

*When vent terminal is less than 10 feet (3 m) horizontally
from a forced air inlet, the terminal must be at least 3 feet
(0.9 m) above the air inlet. (US only)

Page 12

IMPORTANT: All terminals must be placed so that they remain at least
12” above the expected snow line. Local codes may have more specific
requirements, and must be consulted. Refer to the NFPA54 National Fuel
Gas Code and your local codes for all required clearances for venting.

B

RADFORD WHITE

Figure 9. Multiple Side-Wall

Terminals, Air and Vent

Figure 10. Minimum Venting Distance

depending upon local conditions.

6. Locate the terminal so the vent exhaust does
not settle on building surfaces or other nearby
objects. Vent products may damage surfaces
or objects.

7. If the boiler or water heater uses ducted
combustion air from an intake terminal located
on the same wall, see Figures 10 and 11 for
proper spacing and orientation.

If the vent termination is located in an area exposed
to high winds, an optional PVC tee (the same
diameter as the vent pipe) may be used. The tee’d
vent termination offers greater protection from wind
related operating issues.

3.3.2 Side Wall Combustion Air Terminal

The Bradford White side wall combustion air terminal
must be used when the heater takes air from a side
wall. (See Figure 9.) Contact Bradford White for

AL29-4C termination ttings. Consider the following

when installing the terminal. (See Figure 9 and
Figure 10).

1. Do not locate the air inlet terminal near a
source of corrosive chemical fumes (e.g.,

cleaning uid, chlorine compounds, etc.).

2. Locate the terminal so that it will not be subject
to damage by accident or vandalism. It must be
at least 7 feet ( 2.1 m) above a public walkway.

3. Locate the combustion air terminal so that it
cannot be blocked by snow. The National Fuel
Gas Code requires that it be at least 12 inches
(30 cm) above grade, but the installer may
determine it should be higher, depending upon
local conditions.

4. If the Brute is side-wall vented to the same wall,
locate the vent terminal at least 1 foot (0.3 m)
above the combustion air terminal.

5. Multiple vent kits should be installed such that

B

Brute

TM

RUTE. BOILERS AND VOLUME WATER HEATERS, 1,000 & 1,200 MBTU/h

Page 13

the horizontal distance between outlet group
and inlet group is 36” (90 cm). (See Figure 10.)

6. The vent outlet must be at least 12” above the
top of the air inlet, and must be at least 36” (90
cm) horizontally from the air inlet.

3.3.3 Vertical Vent Terminal

When the unit is vented through the roof, the vent
must extend at least 3 feet (0.9 m) above the point
at which it penetrates the roof. It must extend at
least 2 feet (0.6 m) higher than any portion of a
building within a horizontal distance of 10 feet (3.0
m), and high enough above the roof line to prevent
blockage from snow. The vent terminal offered with
the Brute can be used in both vertical and horizontal
applications. When the combustion air is taken from
the roof, the combustion air must terminate at least
12” (30 cm) below the vent terminal.

3.3.4 Vertical Combustion Air Terminal

When combustion air is taken from the roof, a eld-

supplied rain cap or an elbow arrangement must be
used to prevent entry of rain water. The opening on
the end of the terminal must be at least 12” (30 cm)
above the point at which it penetrates the roof, and
high enough above the roof line to prevent blockage
from snow. When the vent terminates on the roof, the
combustion air must terminate at least 12” (30 cm)
below the vent terminal.

3.3.5 Installations in the Commonwealth

of Massachusetts

In Massachusetts the following items are required if
the side-wall exhaust vent termination is less than

seven (7) feet above nished grade in the area

of the venting, including but not limited to decks
and porches. (From Massachusetts Rules and
regulations 248 CMR 5.08.)

1. Installation of Carbon Monoxide Detectors

At the time of installation of the side wall vented

gas fueled appliance, the installing plumber

or gas-tter shall observe that a hard-wired

carbon monoxide detector with an alarm battery

back-up is installed on the oor level where

the gas appliance is to be installed. In addition,

the installing plumber or gastter shall observe

that a battery operated or hard-wired carbon
monoxide detector with an alarm is installed on
each additional level of the dwelling, building
or structure served by the side-wall horizontally
vented gas fueled equipment. It shall be the
responsibility of the property owner to secure

the services of qualied licensed professionals

for installation of hard-wired carbon monoxide
detectors.

a. In the event that the side-wall horizontally

vented gas fueled equipment is installed in a
crawl space or an attic, the hard-wired carbon
monoxide with alarm and battery back-up may

be installed on the next adjacent oor level.

b. In the event that the requirements of the

subdivision cannot be met at the time of
completion of installation, the owner shall have
a period of thirty (30) days to comply with the
above requirements, provided, however, that
during said thirty (30) day period, a battery
operated carbon monoxide detector with an
alarm be installed.

2. Approved Carbon Monoxide Detectors

Each carbon monoxide detector shall comply

with NFPA 720 and be ANSI/UL 2034 listed and

IAS certied.

3. Signage

A metal or plastic identication plate shall be

permanently mounted to the exterior of the
building at a minimum height of eight (8) feet
above grade directly in line with the exhaust
vent terminal for horizontally vented gas fueled
heating appliance or equipment. The sign shall
read, in print no less than one-half (1/2) inch in
size: “GAS VENT DIRECTLY BELOW, KEEP
CLEAR OF ALL OBSTRUCTIONS.”

4. Inspection

The state or local gas inspector of the side-wall

horizontally vented gas fueled appliance shall
not approve the installation unless, upon inspec­tion, the inspector observes carbon monoxide
detectors and signage installed in accordance
with the provisions of 248 CMR 5.08(2)(a) 1-4.

3.4 Common Vent Test

Note -This section does not describe a method for

common venting Brute’s. It describes what must be
done when a unit is removed from a common vent
system. Brute’s require special vent systems and
fans for common vent. Contact the factory if you
have questions about common venting Brute’s.

When an existing boiler is removed from a common
venting system, the common venting system is likely
to be too large for proper venting of the appliances
remaining connected to it.

At the time of removal of an existing boiler, the
following steps shall be followed with each appliance
remaining connected to the common venting system
placed in operation, while the other appliances
remaining connected to the common venting system
are not in operation.

Page 14

B

RADFORD WHITE

1. Seal any unused openings in the common
venting system.

2. Visually inspect the venting system for proper
size and horizontal pitch and determine there is
no blockage or restriction, leakage, corrosion or

other deciencies which could cause an unsafe

condition.

3. As much as possible, close all building doors
and windows. Also close all doors between
the space in which the appliances remaining
connected to the common venting system are
located and other spaces of the building. Turn
on any clothes dryers or other appliances not
connected to the common venting system. Turn
on any exhaust fans, such as range hoods
and bathroom exhausts, so they will operate
at maximum speed. Do not operate a summer

exhaust fan. Close any replace dampers.

4. Place in operation the appliance being
inspected. Follow the lighting instructions. Adjust
the thermostat so the appliance will operate
continuously.

5. Test for spillage at the draft hood relief opening

after ve minutes of main burner operation. Use
the ame of a match or candle, or smoke from a

cigarette, cigar or pipe.

6. After it has been determined that each appliance
remaining connected to the common venting
system properly vents when tested as outlined
above, return the doors, windows, exhaust fans,

replace dampers and any other gas burning

appliances to their previous conditions of use.

7. Any improper operation of the common venting
system should be corrected so that the instal­lation conforms to the National Fuel Gas Code,
ANSI Z223.1/NFPA 54 and/or CSA B149.1,
Installation Codes. When resizing any portion of
the common venting system, the common vent­ing system should be resized to approach the
minimum size as determined using the appropri­ate tables and guidelines in the National Fuel
Gas Code, ANSI Z223.1 NFPA 54 and/or CSA
B149.1, Installation Codes.

operation in outdoor installations, the boiler must
be equipped with the inlet air and exhaust terminal
kits listed in Table 3C. The bottom panel cover
plate must be removed. Additional instructions are
supplied with the terminal kits.

3.6 Condensate Drain Trap

A condensate drain trap is included with the Brute
and is designed to drain the boiler of condensate.
The vent condensate should be drained through
a drain tee located in the vent line. This will help
prevent excessive condensate from entering the
boiler condensate trap and preventing the boiler
from operating.

Connect a 3/4” PVC pipe between the drain

connection and a oor drain (or condensate pump if
a oor drain is not accessible).

The condensate drain must be installed to
prevent the accumulation of condensate. When
a condensate pump is not used, the tubing must
continuously slope downward toward the drain with
no spiraling.

Consult local codes for the disposal method.

Caution

Condensate is mildly acidic (pH=5), and may

harm some oor drains and/or pipes, particularly

those that are metal. Ensure that the drain,
drainpipe, and anything that will come in
contact with the condensate can withstand the
acidity, or neutralize the condensate before
disposal. Damage caused by failure to

install a neutralizer kit or to adequately treat
condensate will not be the manufacturer’s
responsibility.

3.5 Outdoor Installation

The Brute 1000 & 1200’s may only be installed
outdoors in applications where the outdoor
temperature doesn’t drop below freezing. For proper

B

Brute

TM

RUTE. BOILERS AND VOLUME WATER HEATERS, 1,000 & 1,200 MBTU/h

Section 4
GAS SUPPLY AND PIPING

4.1 Gas Supply and Piping

Gas piping should be supported by suitable hangers

or oor stands, not the appliance.

Installers should refer to local building and safety
codes or, in the absence of such requirements,
follow the National Fuel Gas Code, ANSI Z223.1
NFPA 54 and/or CSA B149.1, Installation Codes.

Review the following instructions before proceeding
with the installation.

1. Verify that the appliance is tted for the proper

type of gas by checking the rating plate. The
Brute 1000 & 1200 will function properly

without the use of high altitude modication at

elevations up to 10,000 feet (3050 m).

2. The maximum inlet gas pressure must not

exceed 13” W.C. (3.2 kPa). The minimum inlet
gas pressure is 4” W.C. (1.0 kPa).

3. Refer to Tables 6A, 6B, 6C and 6D to size the

piping.

4. Run the gas supply line in accordance with all

applicable codes.

5. Locate and install manual shutoff valves in

accordance with state and local requirements.

6. A sediment trap must be provided upstream of

the gas controls.

7. All threaded joints should be coated with piping

compound resistant to the action of liqueed

petroleum gas.

8. The appliance and its individual shutoff valve

must be disconnected from the gas supply
piping during any pressure testing of that
system at test pressures in excess of 1/2 PSIG
(3.45 kPa).

9. The unit must be isolated from the gas supply

system by closing its individual manual shutoff
valve during any pressure testing of the gas
supply piping system at test pressures equal to
or less than 1/2 PSIG (3.45 kPa).

10. The appliance and its gas connection must be

leak tested before placing it in operation.

11. Purge all air from gas lines.

Open ame can cause gas to ignite and result in

property damage, severe injury, or loss of life.

Note - The Brute appliance and all other gas ap-

pliances sharing the gas supply line must be ring

at maximum capacity to properly measure the inlet
supply pressure. The pressure can be measured at
the supply pressure port on the gas valve. Low gas
pressure could be an indication of an undersized gas
meter, undersized gas supply lines and/or an ob­structed gas supply line. Some Brute’s are equipped
with low and high gas pressure switches that are
integrally vent limited. These types of devices do not
require venting to atmosphere.

Page 15

WARNING

Page 16

B

RADFORD WHITE

Brute 1000 & 1200

NATURAL GAS

REQUIRED

CU FT
SIZE / HR.

1000 1000
1200 1200

TO SIZE PIPING:

Measure linear distance from meter outlet
to last boiler. Add total input of all boilers
and divide by 1000 to obtain cu ft / hr
required. Add total equivalent length of

ttings used according to Table 6B. Align
total length (pipe and ttings) on left side

column of Table 6C with highest cubic feet
of gas required.

Notes:

Consult and conrm with Applicable Fuel

Gas Code before beginning work.
Verify gas inlet pressure is between 4 and
13 in W.C. before starting boiler.

Table 6A - Natural Gas Requirements

EQUIVALENT LENGTHS OF STRAIGHT PIPE FOR TYPICAL

FITTING 1/2” 3/4” 1” 1-1/4” 1-1/2” 2”

90° ELBOW 3.6 4.4 5.2 6.6 7.4 8.5

TEE 4.2 5.3 6.6 8.7 9.9 12

SCH 40 FITTINGS

NOMINAL PIPE SIZE

LINEAR FEET

Table 6B - Equivalent Pipe Lengths

SCH 40 METAL PIPE CAPACITY FOR 0.60 SPECIFIC GRAVITY

NATURAL GAS

NOMINAL PIPE SIZE @ 0.30” W.C. PRESSURE DROP

LENGTH 1/2” 3/4” 1” 1-1/4” 1-1/2” 2”

FT CUBIC FEET OF GAS PER HOUR

20 92 190 350 730 1100 2100

40 130 245 500 760 1450

60 105 195 400 610 1150

80 90 170 350 530 990

100 150 305 460 870

Table 6C - Pipe Capacity for Natural Gas

SCHED 40 METAL PIPE CAPACITY FOR 1.50 SPECIFIC

GRAVITY UNDILUTED PROPANE

NOMINAL PIPE SIZE @ 11” W.C. INLET AND 0.5” W.C.

PRESSURE DROP

SIZE 1/2” 3/4” 1” 1-1/4” 1-1/2” 2”

LENGTH MAXIMUM CAPACITY IN THOUSANDS OF BTU PER

HOUR

20 200 418 787 1616 2422 4664

40 137 287 541 1111 1664 3205

60 110 231 434 892 1337 2574

80 94 197 372 763 1144 2203

100 84 175 330 677 1014 1952

Notes:

1. Follow all local and national LP gas codes for line sizing and
equipment requirements.

2. Verify that inlet gas pressure remains between 4 and 13 inches
of water column before and during operation.

Source: ANSI Z223.1-80 National Fuel Gas Code.

Table 6D - Pipe Capacity for Propane

B

Intake Exhaust Maximum

 (Air) (Vent) Allowable

Size Pipe Pipe EquivalentLength*

1000 6" 6" 100 ft 30 m

1200 6" 6" 100 ft 30 m

InstallationsintheU.S.requireexhaustventpipethatisacombinationofPVCand
CPVCcomplyingwithANSI/ASTMD1785F441,polypropylenepipethatcomplies
withULCS636,orstainlesssteelcomplyingwithUL1738.InstallationsinCanada
requireexhaustventpipethatiscertiedtoULCS636.
NOTE:Therst12"(30cm)ofventmustbeCPVCifusingaPVCventsystem.

Intake(air)pipemaybeABS,PVC,CPVCorgalvanizedmaterial.

ClosetandalcoveinstallationsdonotallowtheuseofPVCunderanycircumstances

*Tocalculatemaxequivalentlength,measurethelinearfeetofthepipe,andadd5

feet (1.5m) for each elbow used.

Brute

TM

RUTE. BOILERS AND VOLUME WATER HEATERS, 1,000 & 1,200 MBTU/h

Section 5
PUMP REQUIREMENTS

5.1 Brute Boiler Flow and Head Requirements

Temperature Rise in °F

20°F 25°F 30°F 35°F 40°F 45°F

Flow H/L Flow H/L Flow H/L Flow H/L Flow H/L Flow H/L

gpm feet gpm feet gpm feet gpm feet gpm feet gpm feet

95 30 75 20 62 15 54 11 48 9 42 7

114 37 91 26 76 18 65 13 57 10 51 8

Temperature Rise in °C

11°C 14°C 17°C 19°C 22°C 25°C

Flow H/L Flow H/L Flow H/L Flow H/L Flow H/L Flow H/L

lpm m lpm m lpm m lpm m lpm m lpm m

359 9.0 283 6.0 234 4.5 204 3.3 182 2.7 159 2.1

432 11.3 344 7.9 288 5.5 246 4.0 216 3.0 193 2.4

Page 17

Table 7. Water Flow Requirements

5.2 Brute Water Heater Flow and Head Requirements

Temperature Rise

20°F 11°C

Flow H/L Flow H/L

Size gpm feet lpm m

1000 95 30 359 9.0

1200 114 37 430 10.8

Maximum water hardness of 10 grains per gallon allowed.

Table 8. Brute Water Heater Flow Data

Page 18

Section 6 ­WATER CONNECTIONS

B

RADFORD WHITE

Section 6 is divided into TWO parts.
Section 6A covers NTH units designed
for hydronic heating. Many installations
include indirect domestic hot water.
Section 6B covers NTV models, which are
designed exclusively for “volume water”
domestic hot water applications. Refer
to the proper section for instructions on
installing and piping your product. Refer
to Table 9 for the connection pipe sizes
required.

Section 6A - NTH Systems

6A.1 NTH System Piping:

Hot Supply Connections

Note -This appliance must be installed in a closed

pressure system with a minimum of 12 psi (82.7
kPa) static pressure at the boiler.

The hot water piping should be supported by

suitable hangers or oor stands. Do not support

the piping with this appliance. The hangers used
should allow for expansion and contraction of copper
pipe. Rigid hangers may transmit noise through
the system resulting from the piping sliding in the
hangers. We recommend that padding be used
when rigid hangers are installed. Maintain 1” (2.5
cm) clearance to combustibles for all hot water
pipes.

Pipe the discharge of the relief valve (full size) to a
drain or in a manner to prevent injury in the event
of pressure relief. Install an air purger, an air vent,

a diaphragm-type expansion tank, a hydronic ow

check in the system supply loop, and any other

devices required by local codes. The minimum ll

pressure must be 12 psig (82.7 kPa). Install shutoff
valves where required by code.

NTH PIPE SIZE, NTV PIPE SIZE,

SIZE INCHES SIZE INCHES

1000 2 1000 2

1200 2 1200 2

Table 9. Table 9 - Water Connection Pipe Sizes

Suggested piping diagrams are shown in Figures
12 through 16. These diagrams are meant only as
guides. Components required by local codes must
be properly installed.

TheBrute’sefciencyishigherwithlowerreturn

water temperatures. Therefore, to get the best low
return temperature with multiple boilers, pipe as
shown in Figures 15 and 16.

6A.2 NTH Cold Water Make-Up

1. Connect the cold water supply to the inlet

connection of an automatic ll valve.

2. Install a suitable back ow preventer between
the automatic ll valve and the cold water

supply.

3. Install shut off valves where required.

In some installations, a hot water heating boiler is
connected to heating coils located in an air handling
appliance where the coils may be exposed to
refrigerated air circulation. In these cases, the boiler

piping system must be equipped with ow control

valves or other automatic means to prevent gravity
circulation of the boiler water during the cooling
cycle.

WARNING

When a boiler is installed above radiation level, it

is required that a Low Water Cut-Off (LWCO) be

installed unless this requirement is superceded by

Jurisdictional requirements.

Specic instructions for the installation of a Low

Water Cut Off (LWCO) are the following:

Locate the wiring diagram within this manual. On the
wiring diagram, locate the connection points marked
LWCO or Field Interlocks. These are the electrical
connection points for the LWCO. Follow LWCO
Manufacturer’s Wiring Instructions.

Mechanically, install the LWCO device in a tee tting

in the supply piping above the highest point of the

boiler (unless the boiler has an existing tting for that

purpose). Follow LWCO Manufacturer’s Instructions
for minimum pipe sizing.

Note: This boiler is a water tube boiler that requires

water ow through the heat exchanger for proper

B

Brute

TM

RUTE. BOILERS AND VOLUME WATER HEATERS, 1,000 & 1,200 MBTU/h

Page 19

operation. It does not have an operating water
level and must be full at all times. In accordance
with ANSI/ASME CSD-1 Section CW-210 and The
National Fuel Gas Code ANSI Z223.1/NFPA 54
Section 10.3.5 a water tube boiler shall have a water

ow proving device in lieu of a Low Water Cut Off.

6A.3 NTH Freeze Protection

WARNING

Glycol must not be used in domestic hot water
applications. Refer to Section 6B.4 for instructions
on freeze protection for NTV units (domestic hot
water).

Brute’s may be installed indoors or outdoors. If
installed outdoors, the NTH unit must never be
installed in a location which may experience freezing
temperatures. If installed indoors, and there is an
event such as a power outage, interruption of gas
supply, failure of system components, activation of
safety devices, etc., this may prevent a boiler from

ring. Any time a boiler is subjected to freezing

conditions,andtheboilerisnotabletore,and/

or the water is not able to circulate, there is a
risk of freezing in the boiler or in the pipes in the
system. When water freezes, it expands. This may

result in bursting of pipes, or damage to the boiler,

and this could result in leaking or ooding conditions.

Do not use automotive antifreeze. To help prevent
freezing, Bradford White recommends the use
of inhibited glycol concentrations between 20%
and 35% glycol. Typically, this concentration will
serve as burst protection for temperatures down
to approximately -5°F (-20°C). If temperatures
are expected to be lower than -5°F (-20°C), glycol
concentrations up to 50% can be used. When

concentrations greater than 35% are used, water

owratesmustbeincreasedtomaintaina20°F
to25°Ftemperaturerisethroughtheboiler.

Different glycol products may provide varying
degrees of protection. Glycol products must be
maintained properly in a heating system, or they may

become ineffective. Consult the glycol specications,

or the glycol manufacturer, for information about

specic products, maintenance of solutions, and set

up according to your particular conditions.

The following manufacturers offer glycols, inhibitors,
and anti foamants that are suitable for use in the
Brute. Please refer to the manufacturers instructions

for proper selection and application.

• Sentinel Performance Solutions Group

• Hercules Chemical Company

• Dow Chemical Company

6A.4 NTH Suggested Piping Schematics

Figure 11 through Figure 14 (the next several

pages) show suggested piping congurations for

NTH boilers. These diagrams are only meant as
guides. All components or piping required by local
code must be installed.

6A.5 Condensate Drain Trap

A condensate drain trap is included with the Brute
and is designed to drain the boiler of condensate.
The vent condensate should be drained through
a drain tee located in the vent line. This will help
prevent excessive condensate from entering the
boiler condensate trap and preventing the boiler
from operating.

Connect a 3/4” PVC pipe between the drain

connection and a oor drain (or condensate pump if
a oor drain is not accessible).

The condensate drain must be installed to
prevent the accumulation of condensate. When
a condensate pump is not used, the tubing must
continuously slope downward toward the drain with
no spiraling.

Consult local codes for the disposal method.

Caution

Condensate is mildly acidic (pH=5), and may

harm some oor drains and/or pipes, particularly

those that are metal. Ensure that the drain,
drainpipe, and anything that will come in
contact with the condensate can withstand the
acidity, or neutralize the condensate before
disposal. Damage caused by failure to

install a neutralizer kit or to adequately treat
condensate will not be the manufacturer’s
responsibility.

Page 20

Space heating zone circuit

Space heating zone circuits

B

RADFORD WHITE

Low temp. radiant zone

Air vent

Water feed
controls

4 pipe dia. max.

System pump

4 pipe dia. max. 4 pipe dia. max. 4 pipe dia. max.

Note ­This drawing is a schematic
representation of a piping style,
and is not intended to be used
as a working installation drawing.
Local code requirements
must be met.

Figure 11. Hydronic Piping — Single Boiler, Multiple Temperature Zones. Zoning with circulators

B

Brute

TM

RUTE. BOILERS AND VOLUME WATER HEATERS, 1,000 & 1,200 MBTU/h

Page 21

Air vent

Water feed
controls

Expansion tank

Note ­This drawing is a schematic
representation of a piping style,
and is not intended to be used
as a working installation drawing.
Local code requirements
must be met.

4 pipe dia. max.

4 pipe
dia. max.

Anti-scald
mixing valve

Domestic
hot water
out

Indirect DHW tank

Cold
water

Figure 12. Hydronic Piping — Single Boiler, Zoning with Circulators, Indirect DHW Tank with Zone Pumps

Indirect tank directly off of boiler

Page 22

Note ­This drawing is a schematic
representation of a piping style,
and is not intended to be used
as a working installation drawing.
Local code requirements
must be met.

B

RADFORD WHITE

Air vent

Expansion tank

4 pipe dia. max.

Low temp. radiant zone

Water feed controls

Indirect DHW tank

Low temp. radiant zone

Anti-scald
mixing
valve

Domestic
hot water
out

Cold water

Figure 13. Hydronic Piping — Single Boiler with Low Temperature Zones and Indirect DHW Tank

Indirect tank directly off of boiler

B

Brute

TM

RUTE. BOILERS AND VOLUME WATER HEATERS, 1,000 & 1,200 MBTU/h

Page 23

Note ­This drawing is a schematic
representation of a piping style,
and is not intended to be used
as a working installation drawing.
Local code requirements
must be met.

Space heating zone circuit

Air vent

Water feed controls

Expansion tank

4 pipe dia. max.

Space heating
zone circuits

Low temp. radiant zone

4 pipe dia. max. 4 pipe dia. max.

Common piping must be sized for the
combined water flow of all of the boilers.

Figure 14. Hydronic Piping — Multiple Boilers, Multiple Temperature Zones, Reverse Return

Zoning with circulators

Page 24

Space heating zone circuit

Air vent

Space heating zone circuits

High temp. space heating zone circuit

B

RADFORD WHITE

Water feed
controls

Expansion tank

4 pipe dia. max.

Common piping must be sized for the
combined water flow of all the boilers.

Note ­This drawing is a schematic
representation of a piping style,
and is not intended to be used
as a working installation drawing.
Local code requirements
must be met.

4 pipe dia. max. 4 pipe dia. max.

Note ­Indirect pump
must be sized
for boiler and
indirect

Indirect
DHW tank

Anti-scald
mixing valve

Domestic
hot water
out

Cold
water

Figure 15. Hydronic Piping — Multiple Boilers, Indirect DHW Off of One Boiler

Section 6B - NTV Systems

6B.1 NTV Water Quality

NTV water heaters must be installed in water conditions
of 10 gpg hardness or less, with a pH range of 6.5 to

9.5 pH. Values outside of this range may reduce the life
expectancy of the product. Operating the NTV in water
with higher hardness levels will cause heat exchanger
fouling, erosion, or corrosion, leading to premature

component failure, reduced efciency, heat exchanger

failure or system failure. Failure of this type will not be
warranted. If the water in use exceeds the conditions
recommended, water softeners or other devices should
be installed to improve water quality.

Note ­In this piping arrangement,
the boiler pump must turn off
during DHW operation.

6B.2 NTV Piping Requirements

The water piping should be supported by suitable

hangers and oor stands. Do not support the piping

with this appliance. The hangers used should allow
for expansion and contraction of copper pipe. Rigid
hangers may transmit noise through the system
resulting from piping sliding in the hangers. We
recommend that padding be used when rigid hangers
are installed. Maintain 1” (2.5 cm) clearance to
combustibles for hot water pipes.

Pipe the discharge of the relief valve (full size) to the
drain or in a manner to prevent injury in the event of
pressure relief. Install a diaphragm-type expansion

tank, ow check, and shutoff valves where needed or

B

Brute

TM

RUTE. BOILERS AND VOLUME WATER HEATERS, 1,000 & 1,200 MBTU/h

as required by code.

The piping should be installed so that each pump

supplies ow only to the heater to which it is

attached.

6B.3 NTV Cold Water Make-Up

The cold water make-up may be connected to the
tank or to the inlet of the boiler as shown in Figures

17-19. Install back-ow preventers and shut-offs

where needed or required by code.

WARNING

When a water heater is installed above radiation

level, it is required that a Low Water Cut-Off

(LWCO) be installed unless this requirement is

superceded by Jurisdictional requirements.

Specic instructions for the installation of a Low

Water Cut Off (LWCO) are the following:

Locate the wiring diagram within this manual. On the
wiring diagram, locate the connection points marked
LWCO or Field Interlocks. These are the electrical
connection points for the LWCO. Follow LWCO
Manufacturer’s Wiring Instructions.

Mechanically, install the LWCO device in a tee

tting in the supply piping above the highest point

of the water heater (unless the water heater has

an existing tting for that purpose). Follow LWCO

Manufacturer’s Instructions for minimum pipe sizing.

Note: This water heater is a water tube boiler that

requires water ow through the heat exchanger

for proper operation. It does not have an operating
water level and must be full at all times. In
accordance with ANSI/ASME CSD-1 Section CW­210 and The National Fuel Gas Code ANSI Z223.1/
NFPA 54 Section 10.3.5 a water tube water heater

shall have a water ow proving device in lieu of a

Low Water Cut Off

Page 25

Location
of pump

4

Expansion
tank

1

WARNING: This drawing shows

3

suggested piping conguration and

valving. Check with local codes and
ordinances for additional requirements.

Supply

TPRV

2

Building
return

Expansion
tank

4

Cold
water
supply

3

NOTES:

1. Optional CWMU & recirculation line location.

2. Locate NTV DHW sensor or remote aquastat well
in lower 1/3 of tank.

3. Back ow preventer may be required - check local codes.

4. Thermal expansion tank may be required - check local codes.

Figure 16. DHW Piping - One Heater, One Vertical Tank

Page 26

B

RADFORD WHITE

6B.4 NTV Freeze Protection

The NTV unit must never be installed outdoors
in a location which may experience freezing
temperatures. If installed indoors, and there is an
event such as a power outage, component failure
or other issue when freezing is likely, the heater and
system must be drained to avoid the risk of damage
due to freezing. Glycol must not be used in volume
water heating applications.

6B.5 NTV Suggested Piping Schematics

Figures 17-19 show suggested piping congurations

for NTV boilers. These diagrams are only meant as
guides. All components or piping required by local
code must be installed.

3

Cold water
supply

6B.6 NTV Suggested Pumps

See Table 8 for water ow and head

requirements.

Note - The head loss for the piping, ttings,
and accessories must be calculated and added
to the heater head loss to get the total required
pump head. An undersized pump will result in
insufcient ow. The can result in scale buildup
and failure of the heat exchanger.

NOTES:

1. Optional CWMU & recirculation line location.

2. Locate the NTV DHW sensor or remote aquastat well
in lower 1/3 of tank.

3. Back ow preventer may be required - check local

codes.

Building
return

4. Thermal expansion tank may be required ­ check local codes.

5. Caution: Pump sizing must be based upon water

hardness at job site.

Pump

Supply

Expansion
tank

TPRV

1

4

TPRV

2

2

Ball valve
(typical)

Figure 17. DHW Piping - One Heater, Two Vertical Tanks

WARNING: This drawing shows

suggested piping conguration and

valving. Check with local codes and
ordinances for additional requirements.