Bradford White BJX075 Manuel utilisateur

Marque: Bradford White

Modèle: BJX075

Taper: Manuel utilisateur

Ce manuel convient également à

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.

AVERTISSEMENT

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 êtes.

• 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.

Residential

Gas-Fired

Hydronic Boilers

Sizes 50-200 MBTU/h

Installation and Operation Instructions for

Brute Mini

Installation and Operation Instructions Document 1490

H2413300

TABLE OF CONTENTS

SECTION 1 GENERAL INFORMATION

1.A Safety Warnings ..................................... 4

1.B Introduction ............................................. 6

1.C Warranty ................................................. 6

1.D Model Number and Nomenclature .........6

1.E Model Overview ...................................... 7

1.F Dimensions ............................................. 9

1.G The Installation Kit ................................ 10

1.H Accessory Kits Available.......................10

SECTION 2 LOCATING THE BOILER

2.A Field Assembly ..................................... 10

2.B Boiler Placement .................................. 10

2.C Clearances ........................................... 10

SECTION 3 AIR AND VENTING

3.A Safety Warnings ................................... 11

3.B Combustion Air Supply ......................... 12

3.C Venting .................................................13

3.D Vertical Venting - Category I ................ 14

3.E Locations for Vent Pipe Terminator....... 15

3.F Venting with a Power Venter ...............16

3.G Common Vent Test ............................... 16

SECTION 4 GAS CONNECTIONS

4.A Gas Supply and Piping ......................... 17

4.B LP Gas Conversion .............................. 18

4.C Special Precautions for LP Gas............ 18

SECTION 5 PUMP REQUIREMENTS

5.A Pump Sizing ......................................... 19

SECTION 6 WATER CONNECTIONS

6.A Water Piping ......................................... 20

6.B Low Loss Header .................................20

6.C Chilled Water Systems ......................... 20

6.D Oxygen Permeable Systems ................ 20

6.E Anti-freeze ............................................ 20

6.F Typical Plumbing Diagrams .................. 21

SECTION 7 ELECTRICAL AND

WIRING DIAGRAMS

7.A Safety Warnings ................................... 23

7.B Main Power, 120V ................................ 23

7.C Outdoor Sensor .................................... 23

7.D Field Connections ..............................24

7.D.1 TB1 (Term Block 1 -TT, DHW, OAS) . 24

7.D.1.a TT (Central Heat).................................. 24

7.D.1.b DHW. ................................................... 24

7.D.1.c Field Interlocks ..................................... 24

7.D.1.d PV Terminals ....................................... 24

7.D.1.e WWSD + COM .................................... 24

7.D.1.f OAS ..................................................... 24

7.D.2 TB2 (for pumps and aux power) .......25

7.D.2.a Boiler Pump .......................................... 25

7.D.2.b SYS Pump ............................................ 25

7.D.2.c Aux Power ............................................ 25

7.D.3 TB3 (for optional equipment) ............ 25

7.D.3.a DHW Pump .......................................... 25

7.D.3.b DHW Aquastat ...................................... 25

7.E Wiring Connects, Power Vent and Air .. 26

7.F Wiring Diagram ..................................... 28

7.G Logic Diagram ...................................... 29

SECTION 8 THE DIGITAL DASHBOARD

8.A Getting to know the Digital Dashboard.

8.A.1 Setting the Economy Feature ............... 30

8.A.2 High Limit (High Temp) ......................... 30

8.A.3 Low Limit (Advanced Options/Adjust) .. 30

8.A.4 Control LEDs ........................................ 31

8.A.4.a ACTIVE (TEMP) ................................. 31

8.A.4.b HI TEMP .............................................. 31

8.A.4.c ACTIVE (LWCO) .................................. 31

8.A.4.d LOW WATER ....................................... 31

8.A.4.e ACTIVE (ECONOMY) .........................31

8.A.4.f TARGET ............................................. 31

8.A.5 Digital LEDs .......................................... 31

8.A.6 Ignition LEDs ........................................ 31

8.A.6.a LIMITS ................................................. 31

8.A.6.b V-PWR .................................................. 31

8.A.6.c V-SW ................................................... 31

8.A.6.d FLAME .................................................32

8.B Default Settings. ................................32

8.C Advanced Settings .............................32

8.C.1 Programming the Outdoor Sensors ...... 32

8.C.1.a Setting the Outdoor Reset .................... 32

8.C.1.b Setting Warm Weather Shutdown ........ 32

8.C.1.d Thermal Boost ......................................33

8.C.2 Degrees Fahrenheit or Celsius ............. 34

BRADFORD WHITE

7.D Field Connections ..............................24

7.D.1 TB1 (Term Block 1 -TT, DHW, OAS) . 24

7.D.1.a TT (Central Heat).................................. 24

7.D.1.b DHW. ................................................... 24

7.D.1.c Field Interlocks ..................................... 24

7.D.1.d PV Terminals ....................................... 24

7.D.1.e WWSD + COM .................................... 24

7.D.1.f OAS ..................................................... 24

7.D.2 TB2 (for pumps and aux power) .......25

7.D.2.a Boiler Pump .......................................... 25

7.D.2.b SYS Pump ............................................ 25

7.D.2.c Aux Power ............................................ 25

7.D.3 TB3 (for optional equipment) ............ 25

7.D.3.a DHW Pump .......................................... 25

7.D.3.b DHW Aquastat ...................................... 25

7.E Wiring Connects, Power Vent and Air .. 26

7.F Wiring Diagram ..................................... 28

7.G Logic Diagram ...................................... 29

SECTION 8 THE DIGITAL DASHBOARD

8.A Getting to know the Digital Dashboard.

8.A.1 Setting the Economy Feature ............... 30

8.A.2 High Limit (High Temp) ......................... 30

8.A.3 Low Limit (Advanced Options/Adjust) .. 30

8.A.4 Control LEDs ........................................ 31

8.A.4.a ACTIVE (TEMP) ................................. 31

8.A.4.b HI TEMP .............................................. 31

8.A.4.c ACTIVE (LWCO) .................................. 31

8.A.4.d LOW WATER ....................................... 31

8.A.4.e ACTIVE (ECONOMY) .........................31

8.A.4.f TARGET ............................................. 31

8.A.5 Digital LEDs .......................................... 31

8.A.6 Ignition LEDs ........................................ 31

8.A.6.a LIMITS ................................................. 31

8.A.6.b V-PWR .................................................. 31

8.A.6.c V-SW ................................................... 31

8.A.6.d FLAME .................................................32

8.B Default Settings. ................................32

8.C Advanced Settings .............................32

8.C.1 Programming the Outdoor Sensors ...... 32

8.C.1.a Setting the Outdoor Reset .................... 32

8.C.1.b Setting Warm Weather Shutdown ........ 32

8.C.1.d Thermal Boost ......................................33

8.C.2 Degrees Fahrenheit or Celsius ............. 34

8.C.3 Manual Reset Low Water Cut-O ......... 34

8.C.4 Low water Cut-O ................................ 34

8.C.5 High Limit Dierential ........................... 34

8.C.6 Restore Factory Default Settings .........34

8.D TEST / SETTINGS Button ..................35

8.E Temperature and Pressure Gauge ....35

SECTION 9 INITIAL STARTUP

9.A Filling the System ................................. 36

9.B System Start Up (Seq of Operation) ..... 36

9.C Proper Pilot Flame ................................ 38

9.D Lighting Instructions Decal ................... 39

9.E System Shutdown ................................40

SECTION 10 MAINTENANCE

10.A Removing the covers and panels ......... 40

10.A.1 Access Cover Removal ...................... 40

10.A.2 Flue Collector Access .......................... 40

10.A.3 Side Panel Removal ............................ 41

10.A.4 Draft Hood Removal ........................... 41

10.B Maintenance ......................................... 42

SECTION 11 OPERATING DETAILS AND

TROUBLESHOOTING

11.A Operating Details .................................. 43

11.B Electrical Troubleshooting .................... 43

11.C Troubleshooting Table .......................... 44

11.C.1 Troubleshooting Flow Chart 1 (burners o) 45

11.C.2 Troubleshooting Flow Chart 2 (burners on) 46

SECTION 12 REPLACEMENT PARTS

12.A Parts Illustrations .................................. 47

12.B Parts List ..............................................49

12.C Accessories List ...................................50

12.D Glossary of Terms................................. 51

RESIDENTIAL BOILERS

Brute-Mini

Page 4

1.A Safety Warnings

WARNING

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.

WARNING

This unit must be installed in accordance with the

procedures detailed in this manual, or the manufacturers

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

these 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. If  eld

conditions require modi cations, consult the factory

representative before initiating such modi cations.

WARNING

• 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 the unit.

• Feel water before bathing

or showering.

• If this unit 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).

WARNING

The inlet gas pressure to the unit must not

exceed 13” W.C. (3.2kPa).

WARNING

Fire or Explosion Hazard

Improper con guration can cause fuel buildup and

explosion. Improper user operation may result in

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

not appear to be functioning in a normal manner, close

the main gas shuto valve. Do not shut o the power

switch. Contact your heating contractor, gas company,

or factory representative.

NOTE: This unit is protected against hydronic

over-pressurization. A pressure relief valve is included

with each unit.

WARNING

Indicates an imminently hazardous situation which, if not

avoided, can or will result in death or serious injury and can

or will result in catastrophic property damage.

CAUTION

Indicates a potentially hazardous situation which, if not avoided,

may result in moderate injury and/or property damage.

NOTE:

Indicates instructions that are important to that topic but not

related to personal injury or property damage.

Safety Warnings are used throughout this manual to bring attention to the presence of hazards with various

risk levels and to o er important information concerning the life of this product. There are 3 basic types.

WARNING

CANCER AND REPRODUCTIVE HARM.

WWW.P65WARNINGS.CA.GOV.

AS REQUIRED BY THE STATE OF

CALIFORNIA PROPOSITION 65.

SECTION 1 GENERAL INFORMATION

BRADFORD WHITE

Page 5

WARNING

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 be

necessary to turn o more than one power supply

to disconnect.

All electrical wiring is to be done in accordance with

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.

WARNING

The Repair Parts list designates parts that contain

refractory ceramic  bers (RCF). RCF has been classi ed

as a possible human carcinogen. When exposed to

temperatures above 180ºF, such as during direct  ame

contact, RCF changes into crystalline silica, a known

carcinogen. When disturbed as a result of servicing or

repair, these substances become airborne and, if inhaled,

may be hazardous to your health.

Do not remove or replace RCF parts or attempt any

service or repair work involving RCF without wearing

the following protective gear:

1. A National Institute for Occupational Safety and

Health (NIOSH) approved respirator.

2. Long sleeved, loose  tting clothing.

3. Gloves.

4. Eye Protection.

WARNING

Should overheating occur or the gas supply fail to

shut o , do not turn o or disconnect the electrical

supply to the pump. Instead, shut o the gas supply

at a location external to the appliance.

AVERTISSEMENT

En cas de surchau e au si !’admission de gaz ne

peut etre coupee, ne pas couper ni debrancher

l’alimentatio electrique de la pompe. Fermer plutot

le robinet d’admission de gaz a l’exterieur de

l’appareil.

RESIDENTIAL BOILERS

Brute-Mini

Page 6

Consult the rating plate on the unit. The following

information describes the model number structure.

1.B Introduction

1.C Warranty

Model Nomenclature

1.D Model Number and Nomenclature

1C. Model Number and Nomenclature

The rating plate on the side of your Mini-Therm shows your Model Number. The original characteristics of

your unit can be identified using this nomenclature from your Model Number.

0 1 2 3 4 5 6 7

9 10

SIZE

Table 1. Nomenclature.

BJX = Mini-Therm Series

thru 5th Characters (Size) Input MBTU / HR

6th Character (fuel)

N = Natural Gas

7th Configuration

BRADFORD WHITE

Bradford White Brute-Mini's are covered by a limited

warranty. The owner should complete the warranty

registration at 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), 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 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 warranty does not cover damage caused by

improper assembly installation, operation or eld

modication.

This manual provides information necessary for

the installation, operation, and maintenance of the

Bradford White Brute-Mini residential boiler. Read it

carefully before starting the 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 problems or questions

regarding this equipment. Experience has shown that

most operating problems are caused by improper

installation.

0 - 2nd Characters (Series Name)

BJX = Brute Mini

3rd thru 5th Characters (Size)

Input MBTU / H

6th Character (fuel)

N = Natural Gas

7th Character (Cong)

X = Standard 50-100

L = Standard 125-200

(Low Loss Header & Pump Installed)

P = 50-100 with Pump Kit

8th Character (Altitude in Feet)

X = (0 - 2,000)

H = (2,001 - 5,000)

I = (5,001 - 8,000)

9th Character (Country)

U = USA & Canada

10th Character (Revision)

1 = 1st Revision

Page 7

Figure 1. Largest and Smallest

200 MBH

Rating Plate

w/ Model Number

and Nomenclature

Low Loss Header.

Models 125 - 200 only

50 MBH

1.E Model Overview

RESIDENTIAL BOILERS

Brute-Mini

Page 8

User Control

Interface

Panel

Lock

Temp and Pressure

Gauges

Drain

Rating Plate

Pressure

Relief Valve

Pressure

Relief Valve

‘Knock-outs’

Gas Supply

Main Power 120V

Connections

See 7.B on page 23

See 7.D on page 24

Gas Valve

Pilot Ignitor

Sensor

Shown with front cover o

Field Connections

TB1

DHW Relay

Connections

TB3

Field Connections

TB2

Low Loss Header

(sizes 125 - 200)

Hydronic Supply

Hydronic Return

Figure 2. Location of Components (model 100 shown)

1.E Model Overview (continued)

BRADFORD WHITE

Page 9

Table 1. Dimensions

1.F Dimensions

Dimensional

Data

1-1/4” NPT Female

OUT (Supply)

IN (Return)

1-1/4” NPT Female

53cm

23cm

11.8cm

4-5/8"

21"

9-1/8" Max

Right View

(125, 150, 200)

OUT (Supply)

IN (Return)

1-1/4” NPT Male

18cm

Right View

(50, 75, 100)

In Return

Top View

Low Loss Header & Damper not shown

T&P Gauge

Control Display

PRV

Out Supply

WATER

CONN

GAS

CONN

SIZE

A B C D E

F1 F2

in. cm in, cm in. cm in, cm in. cm in. cm in. cm in.

(inches)

cm 1-1/4

3/4

50 11-3/4 30 31-5/8 80 25-1/8 64 24-3/4 63 27-5/8 70 24-7/8 63

- -

4 10 1-1/4

3/4

75 14-1/2 37 31-5/8 80 25-5/8 65 24-3/4 63 28-5/8 73 24-7/8 63

24-7/8 63

- -

5 13 1-1/4

3/4

100 17-3/8 45 32-1/8 82 25-1/2 65 25-3/8 65 28-5/8 73 5 13 1-1/4

3/4

125 20-1/8 52 32-1/8 82 25 64 25-3/8 65 28-5/8 73 -

31 79 6 15 1-1/4

3/4

150 23 59 32-1/8 82 25 64 25-3/8 65 28-5/8 73 -

31 79 6 15 1-1/4

3/4

200 28-3/8 73 32-1/4 82 24-5/8 63 26-1/4 67 28-5/8 73 -

31 79 7 18 1-1/4

3/4

Front View

Draft Diverter

Damper

6”

3-1/4” 8.3cm

Low Loss

Gas

Supply

Header

1-1/4” NPT Female

OUT (Supply)

IN (Return)

1-1/4” NPT Female

53cm

23cm

11.8cm

4-5/8"

21"

9-1/8" Max

Right View

(125, 150, 200)

OUT (Supply)

IN (Return)

1-1/4” NPT Male

18cm

Right View

(50, 75, 100)

In Return

Top View

Low Loss Header & Damper not shown

T&P Gauge

Control Display

PRV

Out Supply

WATER

CONN

GAS

CONN

SIZE

A B C D E

F1 F2

in. cm in, cm in. cm in, cm in. cm in. cm in. cm in.

(inches)

cm 1-1/4

3/4

50 11-3/4 30 31-5/8 80 25-1/8 64 24-3/4 63 27-5/8 70 24-7/8 63

- -

4 10 1-1/4

3/4

75 14-1/2 37 31-5/8 80 25-5/8 65 24-3/4 63 28-5/8 73 24-7/8 63

24-7/8 63

- -

5 13 1-1/4

3/4

100 17-3/8 45 32-1/8 82 25-1/2 65 25-3/8 65 28-5/8 73 5 13 1-1/4

3/4

125 20-1/8 52 32-1/8 82 25 64 25-3/8 65 28-5/8 73 -

31 79 6 15 1-1/4

3/4

150 23 59 32-1/8 82 25 64 25-3/8 65 28-5/8 73 -

31 79 6 15 1-1/4

3/4

200 28-3/8 73 32-1/4 82 24-5/8 63 26-1/4 67 28-5/8 73 -

31 79 7 18 1-1/4

3/4

Front View

Draft Diverter

Damper

6”3-1/4” 8.3cm

Low Loss

Gas

Supply

Header

RESIDENTIAL BOILERS

Brute-Mini

Page 10

Figure 3. Minimum Clearances

SECTION 2 LOCATING THE BOILER

2.A Field Assembly

This boiler is shipped with an automatic vent damper that

must be assembled onto the vent collar on the top of the

boiler, and then plugged into the unit using the dedicated

harness.

2.B Boiler Placement and Clearances

This boiler is design certied by CSA-International for

indoor installation on combustible ooring, in basements,

in closets, utility rooms or alcoves. These units must

never be installed on carpeting.

1. This boiler is designed for indoor installations only

and should be located to provide clearances on all

sides for maintenance and inspection. See Figure

3. It should not be located in an area where leakage

of any connections will result in damage to the

area adjacent to the unit or to lower oors of the

structure. When such a location is not available, it is

recommended that a suitable drain pan, adequately

drained, be installed under the unit.

2. A minimum of 15” (381mm) access must be available

in front of the boiler for burner removal. Consult

local codes for clearances to hot water pipes and

accessories.

3. If the boiler is to be installed in a garage, all burners

and burner ignition devices must have a minimum 18”

(457mm) clearance above the oor.

4. Boilers can be installed in a closet as long as all

minimum clearances are followed, including between

the front of the boiler and the closet door when it is

closed. See Figure 3. Consult the American National

Standard Z21.13 for more information concerning

closet installations. In Canada, refer to the latest

edition of CSA-B149.1.

5. When vented vertically, the unit must be located as

close as practical to the vertical section of the vent.

When a power venter is used with a terminal through

a wall, and there is a potential for snow accumulation,

the terminal must be installed at an appropriate level

above grade or the maximum expected snow

line.

NOTE: For installation on combustible ooring.

Installer seulement sur un plancher

combustible.

NOTE: For Closet Installation Clearances, the

minimum clearance between hot water pipes

and combustible construction is 1” (2.5 cm.)

BRADFORD WHITE

4” 10 cm

6” 15 cm

20” 51 cm

2” 5 cm

1.G The Installation Kit

This residential unit is shipped in a single crate

with a boxed installation kit that contains these

components.

1. I/O Manual

2. Vent Damper

3. Burner Air Bae Gauge (Mini Gauge)

Optional:

1. Circulator pump & ange kit (50 - 100)

1.H Accessory Kits Available

See Section 12.C on page 50 for part numbers.

• Low Loss Header with Integral Pump for 50 - 100

(Standard on larger models)

• Conversion kits for LP and altitude are available

from 0 to 10,000’ both fuels.

• Domestic Hot Water Pump Relay Kit

• Power Vent Kits

• Outdoor Air Sensor

Page 11

SECTION 3 Air and Venting

3.A Safety Warnings

WARNING

For Category I, II and IV boilers, have horizontal runs

sloping upwards not less than ¼ inch per foot (21 mm/m)

from the boiler to the vent terminal.

AVERTISSEMENT

les chaudiE!res de categf)ries I, II et IV doivent

presenter des troni;ons horizontaux dont la pente

montante est d'au mains ¼ po par pied (21 mm/m) entre

la chaudiere et l'event.

WARNING

Damper must be in open position when appliance main

burner(s) is operating.

For use only with automatic vent damper device.

Follow installation instructions.

This boiler needs fresh air for safe operation and

must be installed so there are provisions for adequate

combustion and ventilation air.

AVERTISSEMENT

Le registre doit etre ouvert lorsque le brÛleur principal

de l'appareil fonctionne.

Pour utilisation avec un registre de conduit

d'evacuation automatique, Suivre les instructions

d'installation.

Cette chaudiere doit étre alimente en air frais pour

fonctionner en toute securite et doit etre installee de

fai;on que la combustion et l'alimentation en air de

ventilation soient adequates.

WARNING

This boiler must be vented in accordance with Part

7, Venting of Equipment, of the latest edition of the

National Fuel Gas code, NFPA 54/ANSI Z223.1

and all applicable local building codes. In Canada,

follow CAN/CGA B149 Installation codes. Improper

venting of this appliance can result in excessive

levels of carbon monoxide which can result in

severe personal injury or death!

AVERTISSEMENT

Cette chaudière doit être ventilé, conformément

aux dispositions de la partie 7, de la ventilation de

l'équipement, de la dernière édition du National

gaz carburant code, NFPA 54/ANSI Z223.1 et tous

les codes du bâtiment locaux. Au Canada, CAN/

CGA B149 codes d'installation. Une mauvaise

ventilation de cet appareil peut entraîner des

niveaux excessifs de monoxyde de carbone qui

peut entraîner de graves blessures ou la mort!

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 ue

gasses into living spaces, common venting should

not be applied, and appliances should each be

vented separately.

AVERTISSEMENT

Le fonctionnement des appareils avec un système

d’évacuation bloqué peut provoquer des blessures

graves, voire la mort. Des dispositifs de sécurité

doivent être installés pour éviter le blocage des

systèmes d’évacuation. Si le fonctionnement

de tous les appareils connectés à un système

d’évacuation commun ne peut pas être assuré,

y compris la prévention de la dispersion des gaz

toxiques dans les espaces habités, on ne devrait

pas installer un système d’évacuation commun et

chaque appareil devrait être ventilé séparément.

RESIDENTIAL BOILERS

Brute-Mini

Page 12

BRADFORD WHITE

The information in Table 2 is not applicable in

installations where exhaust fans or blowers of any

type are used. Such installations must be designed by

qualied engineers.

Mechanical Combustion Air Systems: If a blower or

fan or automatic louvers are used to supply air to the

boiler room, the installer should make sure it does not

create drafts which could cause nuisance shutdowns. If

a blower is necessary to provide adequate combustion

air to the boiler, a suitable switch or equivalent must

be wired into the boiler control circuit to prevent the

boiler from ring unless the blower is operating. See

"7.E Wiring Connections, Power Vent and Air" on page

26 for wiring diagram.

The boiler must be completely isolated and

protected from any source of corrosive chemical

fumes such as those emitted by trichloroethylene,

perchloroethylene, chlorine, etc.

Figure 4. Chimney Venting (clay lined). Figure 5. Vertical Venting (vent or manufactured

chimney lining system).

CHIMNEY

LINER

THIMBLE

BOILER

CLEAN-

OUT

CHIMNEY

LINER

BOILER

THIMBLE

1/4"

PER FT.

(20mm PER M)

SLOPE

1/4"

PER FT.

(20mm PER M)

SLOPE

12" (305mm)

3.B Combustion Air Supply

The boiler location must provide sucient air

supply for proper combustion, and ventilation of the

surrounding area as outlined in the latest edition of U.S.

ANSI standard Z223.1 or in Canada, CAN/CGA-B149.1

or .2, and any local codes that may be applicable.

In general, these requirements specify that the boiler

rooms which represent conned spaces should be

provided with two permanent air supply openings; one

within 12 inches (305mm) of the ceiling, the other within

12 inches (305mm) of the oor.

NOTE: In Canada, follow Canadian Standard, CAN/

CGA-B149 or local codes.

Outside Air Supply: When combustion air is

supplied directly through an outside wall, each opening

should have a minimum free area of one square inch

per 4,000 BTU/h (6 sq. cm per 1.2 kW) input of the total

input rating of all appliances in the enclosed area.

Inside Air Supply: When combustion is supplied

from inside the building, each opening should have a

minimum free area of one square inch per 1,000 BTU/h

(6 sq. cm per 0.3 kW) input of the total input rating of all

appliances in the enclosed area. These openings should

never be less than 100 square inches (645 sq. cm).

Exhaust Fans or Vents: Any equipment which

exhausts air from the boiler room can deplete the

combustion air supply or reverse the natural draft action

of venting system. This could cause ue products to

accumulate in the boiler room. Additional air must be

supplied to compensate for such exhaust.

Table 2. Minimum Recommended

Air Supply to Boiler Room

Boiler Size Outside Air Area Inside Air Area

sq. in

sq. cm

sq. in.

sq. cm

100

645

129

100

645

100

161

100

645

125

206

125

807

150

245

150

980

200

323

200

1290

*Area indicated is for one of two openings: one at floor level

and one at the ceiling, so the total net free area would be

double the figures shown. For special conditions, refer to

NFPA54 ANSI Z223.1. In Canada, refer to the National

Standard CAN1-B149.1 or .2, which

differs from this table.

NOTE: Check with louver manufacturers for Net Free Area of

Louvers. Correct for screen resistance to the Net Free Area if a

screen is used.

CLEAN-

OUT

Page 13

RESIDENTIAL BOILERS

Brute-Mini

WALL OR

PARAPET

CHIMNEY

RIDGE

WALL OR

PARAPET

CHIMNEY

RIDGE

10 (3.0) OR

LESS

Figure 6. Vertical Vent Termination.

2 (0.6) MIN.

3 (0.9)

MIN.

10 (3.0)

OR LESS

2 (0.6)

MIN.

3 (0.9)

MIN.

3 (0.9)

MIN.

3 (0.9)

MIN.

2 (0.6)

MIN.

10 (3.0)

MORE THAN 10

(3.0)

MORE THAN 10

(3.0)

NOTE: NO HEIGHT

ABOVE PARAPET

REQUIRED WHEN

FROM WALLS OR

PARAPET IS MORE

THAN 10 FT. (3.0m)

TERMINATION

10 FT. (3.0m)

OR LESS FROM RIDGE,

WALL OR PARAPET

Dimensions in feet (m).

3.C Venting

Vent Category: This boiler is a natural draft

appliance for Category I venting. It may also be vented

using a power vent. Follow the instructions provided

with the power venter. See 3.F for more information.

NOTE: When venting a Category I boiler, the

vent damper must be fastened directly to the vent

collar, and vent pipe must be fastened directly to

the vent damper.

The installation must also conform to the requirements

of applicable local codes, or in the absence of such

codes, to the National Fuel Gas Code, ANSI Z223.1

and the National Electric Code, ANSI NFPA 70, or in

Canada, CAN/CGA B149.1 (a vent damper may not

be required in all Canadian jurisdictions) and B149.2

Installation Codes and the requirement of CSA C22.1,

Part 1.

Do not weld the vent pipe to the boiler collar.

The weight of the stack must not rest on the boiler.

The boiler top is designed so that it can be easily

removed for normal boiler service and inspection

without removal of the venting.

Avoid terminating boiler vents near air conditioning

or air supply fans. The fans can pick up exhaust

ue products from the boiler and return them to the

building, creating a possible health hazard.

Avoid oversized vent pipe or extremely long runs

of vent pipe, which may cause excessive cooling and

condensation.

When installing the vent system, all applicable

national and local codes must be followed! The use

of thimbles, restops and other protective devices,

when penetrating combustible or noncombustible

construction, must be in accordance with all applicable

national and local codes.

An unused lined chimney can be used as a

raceway for single wall vent pipe. Never run vent pipe

through a ue that has another appliance attached to

it.

NOTE: The minimum return water temperature of

the unit, in order to avoid condensation in the vent,

is 130°F. The unit's control is equipped to protect

against low temperatures, however the pumps must

be installed and wired properly for this feature to

function. The system pumps must be wired to the

system pump terminals, and a boiler pump must

be installed and wired to the boiler pump terminal

(models 125 - 200 are built with LLH/ boiler pump

systems that are wired at the factory). See Figure

21 on page 27. If the system is not setup this

way, condensation may occur which could damage

venting systems.

Page 14

BRADFORD WHITE

3.D Vertical Venting - Category I

All venting must comply with fuel gas code and

be installed by a licensed installer.

This boiler can be vented into a masonry chimney,

(see Figure 4 and Figure 5 on page 12) provided

several conditions are met:

1. The chimney must have an appropriate lining that

is clean, properly constructed and properly sized.

2. The chimney passage way shall be examined to

ascertain that it is clear and free of obstructions.

3. If a chimney rebuild is required, it shall conform

to nationally recognized standards (see National

Building Code or ANSI/NFPA 211).

4. The boiler must not be connected to a replace,

wood stove or other solid fuel burning equipment.

5. When the boiler and a hot water heater are to be

connected to the same chimney, they must have

their own vent connector and enter the chimney at

least 6” (152mm) apart.

IMPORTANT NOTE: Always provide a minimum

clearance of 6” (152mm) between Type C (single

wall) vent pipe and any combustible materials.

NOTE: Exterior masonry chimneys in very cold

environments are at risk of condensing due to the

high eciency of this equipment. Insulated liners

are recommended based on local conditions and

expected system water temperatures. Also ensure

the boiler’s anti-condensing features are utilized by

properly wiring the system pumps. See Figure 20. or

Figure 21 on page 27

WARNING

Do not store any chemical, cleaners, or other

corrosive material near combustion air openings

or in the room. Avoid locating dryer vents in the

vicinity of combustion air openings. Failure to

prevent corrosive materials from mixing with

combustion air can result in reduced boiler life

and unsafe boiler operation.

AVERTISSEMENT

N’entrepposer aucun produit chimique, produit

nettoyant ou produit corrosif à proximité des

bouches d’air de combustion ou dans la pièce.

Éviter de placer des tuyaux de ventilation pour

sécheuse à proximité des bouches d’air de

combustion. Le fait de laisser des maitières

corrosives se mélanger à l’air de combustion

risque de réduire le cycle de vie de l’appareil

de chauage et de compromettre son

fonctionnement.

WARNING

Single wall vent pipe must NEVER pass through

interior walls or through oors or ceilings! Failure

to comply with this warning could result in a re

causing property damage, personal injury, or death!

AVERTISSEMENT

Paroi simple tuyau d'évent doit jamais passer par

l'intérieur les murs ou par planchers ou plafonds

! Le non-respect de cet avertissement peut

provoquer un incendie causant des dommages

matériels ou corporels, ou de mort!

Page 15

RESIDENTIAL BOILERS

Brute-Mini

Figure 7.

Combustion Air and Vent Through Side Wall

*When vent terminal is less than 10 feet (3m)

horizontally from a forced air inlet, the terminal

must be at least 3 feet (0.9m) above the air inlet.

(US only)

† A vent shall not terminate directly above a sidewalk or paved driveway that is located between two single family dwellings and serves both dwellings.

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

Notes:

1) In accordance with the current CSA B149.1, Natural Gas and Propane Installation Code.

2) In accordance with the current ANSI Z223.1/NFPA 54, Natural Fuel Gas Code.

3) If locally adopted installation codes specify clearances dierent than those illustrated, then the most stringent clearance shall prevail.

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

5) 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.

6) IMPORTANT: Terminal must be placed such that it remains a minimum of 12” above maximum expected snow line. Local codes may have more specic

requirements, and must be consulted.

A = Clearance above grade, veranda, porch,

deck, or balcony

)mc 03( ni 21)mc 03( ni 21

B = Clearance to window or door that may be

opened

● 6 in (15 cm) for appliances ≤ 10,000 Btuh (3 kW)

● 12 in (30 cm) for appliances > 10,000 Btuh (3 kW) and

≤ 100,000 Btuh (30 kW)

● 36 in (91 cm) for appliances >100,000 Btuh (30 kW)

● 6 in (15 cm) for appliances ≤ 10,000 Btuh (3 kW)

● 9 in (23 cm) for appliances > 10,000 Btuh (3 kW) and

≤ 50,000 Btuh (15 kW)

● 12 in (30 cm) for appliances >50,000 Btuh (15 kW)

wodniw desolc yltnenamrep ot ecnaraelC= C

D = Vertical clearance to ventilated soffit located

above the terminal within a horizontal

distance of 2 ft (61 cm) from

the center line of the terminal

tiffos detalitnevnu ot ecnaraelC = E

renroc edistuo ot ecnaraelC = F

See Note 4

See Note 5

ren

roc edisni ot ecnaraelC = G

H = Clearance to each side of centerline

extended above meter / regulator assy

3 ft (91 cm) within a height of 15 ft (4.6 m)

)mc 19( tf 3teltuo tnev rotaluger ecivres ot ecnaraelC = I

J = Clearance to nonmechanical air

supply inlet to building or the

combustion air inlet to any

other appliance

●

6 in (15 cm) for appliances ≤ 10,000 Btuh (3 kW)

●

12 in (30cm) for appliances > 10,000 Btuh (3 kW) and

≤ 100,000 Btuh (30 kW)

●

36 in (91 cm) for appliances > 100,000 Btuh (30 kW)

●

6 in (15 cm) for appliances ≤ 10,000 Btuh (3 kW)

●

9 in (23cm) for appliances > 10,000 Btuh (3 kW) and

≤ 50,000 Btuh (15 kW)

●

12 in (30 cm) for appliances > 50,000 Btuh (15 kW)

K = Clearance to a mechanical air

inle

nihtiw fi evoba )mc 19( tf 3)m 38.1( tf 6

10 ft

(

3 m

)

horizontall

L = Clearance above paved sidewalk or paved

driveway located on public property

I yrogetaC( smetsys tfard lacinahcem rof )m 31.2( tf 7†)m 31.2( tf 7

appliances). Vents for Category II and IV appliances

cannot be located above public walkways or other

areas where condensate or vapor can cause a nuisance

or hazard*

M = Clearance under veranda, porch, deck, or

balcony

‡)mc 03( ni 21

* The manufacturer shall specify a minimum clearance or state "Not applicable" in the table and/or instructions.

i) The minimum distance from adjacent public walkways, adjacent buildings, openable windows, and building

openings shall not be less than those values specified in the National Fule Gas Code, ANSI Z223.1/NFPA 54,

and/or the Natural Gas and Propane Installation Code, CSA B149.1;

ii) Information on preventing blockage by snow; and

iii) Information on protecting building materials from degradation by flue gases.

† A vent shall not terminate directly above a sidewalk or paved driveway that is located between two single

family dwellings and serves both dwellings.

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

Notes:

1) In accordance with the current CSA B149.1, Natural Gas and Propane Installation Code.

2) In accordance with the current ANSI Z223.1/NFPA 54, Natural Fuel Gas Code.

3) If locally adopted installation codes specify clearances different than those illustrated, then

the most stringent clearance shall prevail.

Canadian Installations

U.S. Installations

3.E Locations for Vent Pipe Terminator

Page 16

BRADFORD WHITE

3.G Common Vent

3.G Évent Commun

3.F Venting with a Power Venter

This boiler is certied for use with the manufacturer's

suggested Power Venter, which is supplied in a kit that

includes Installation Instructions. See the accesories

list in the Parts Section of this manual. The location of

the venter on the outside wall shall be in accordance

with ANSI Z223.1/NFPA 54, or in Canada with CAN/

CGA-B149 and applicable local codes.

WARNING

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.

Please read Section 3.A on page 11

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.

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. Insofar as it is practical, close all building doors and

windows and 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 clothes dryers and any gas

burning appliance not connected to the common

venting system. Turn bathroom exhausts, so they

will operate at maximum speed. Do not operate a

summer exhaust fan. Close replace dampers.

4. Place in operation the appliance being inspected.

Follow the lighting instructions. Adjust thermostat so

appliance will operate continuously.

5. Test for spillage at the burner opening after ve

minutes of main burner operation.

6. After it has been determined that each appliance

remaining connected to the common venting system

properly vents when tested as outlined above, return

doors, windows, exhaust fans, replace dampers

and any other gas burning appliance to their

previous conditions of use.

7. Any improper operation of the common venting

system should be corrected so the installation

conforms with the National Fuel Gas Code, ANSI

Z223.1. When re-sizing any portion of the common

venting system, the common venting system should

be re-sized to approach the minimum size as

determined using the appropriate tables in Appendix

G in the National Fuel Gas Code, ANSI Z223.1/

NFPA 54.

AVERTISSEMENT

Lorsqu'une chaudière existante est retirée d'un

système de ventilation commun, le système de

ventilation commun est susceptible d'être trop grand

pour une ventilation adéquate des appareils qui y

restent connectés.

Lisez s'il vous plaît Section 3.A on page 11

Au moment du retrait d’une chaudiere existante,

les mesures suivantes doivent etre prises pour chaque

appareil toujours raccorde au systeme d’evacuation

commun et qui fonctionne alors que d’autres appareils

toujours raccordes au systeme d’evacuation ne

fonctionnent pas:

Sceller toutes les ouvertures non utilisees du systeme

d’evacuation.

lnspecter de fai;on visuelle le systeme d’evacuation

pour determiner la grosseur et l’inclinaison horizontale

qui conviennent et s’assurer que le syste’me est

exempt d’obstruction, d’etranglement, de fuite, de

corrosion et autres defaillances qui pourraient presenter

des risques.

Dans la mesure du possible, fermer toutes les portes

et les fenetres du bâtiment et toutes les portes entre

l’espace all les appareils toujours raccordes au systeme

d’evacuation sont installes et les autres espaces du

bâtiment. Mettre en marche les secheuses, taus les

appareils non raccordes au systéme d’évacuation

commun et taus les ventilateurs d’extraction com me

les hottes de cuisiniere et les ventilateurs des salles

de bain. S’assurer que ces ventilateurs fonctionnent

a la vitesse maximale. Ne pas faire fonctionner les

ventilateurs d’éte. Fermer les registres des cheminées.

Mettre l'appareil inspecte en marche. Suivre les

instructions d'allumage. Régler le thermostat de fai;on

que l'appareil fonctionne de fai;on continue.

Faire fonctionner le brOleur principal pendant 5 min

ensuite, determiner si le coupe-tirage déborde a

l'ouverture de decharge. Utiliser la am me d'une

allumette au d'une chandelle au la fumee d'une

cigarette, d'un cigare au d'une pipe.

Une fois qu'il a ete determine, selon la methode

indiquee ci-dessus, que chaque appareil raccorde

au systéme d'evacuation est mis a l'air libre de fai;on

adequate. Remettre les portes et les fenétres, les

ventilateurs, les registres de cheminees et les appareils

au gaz a leur position originale.

7. Tout mauvais fonctionnement du systeme

d'evacuation commun devrait etre corrige de fai;on

que !'installation soit conforme au National Fuel

Gas Code, ANSI Z223.1/NFPA 54 et (au) aux codes

d'installation CAN/CSA-B149.1. Si la grosseur d'une

section du systemed'evacuation doit etre modiee,

le systeme devrait etre modie pour respecter les

valeurs mini males des tableaux pertinents de

l'appendice F du National Fuel Gas Code, ANSI

Z223.1/ NFPA 54 et (au) les codes d'installation CAN/

CSA-B149.1.

Page 17

Gas Supply

Inlet

Tee

Fitting

3 in.

(76mm) Min.

Cap

Nipple

To Equipment

Inlet

Figure 8. Typical design for a sediment

trap/drip leg.

RESIDENTIAL BOILERS

Brute-Mini

2. Check the gas supply to be sure that it is the same

as the gas indicated on the boiler’s plate. This boiler,

as shipped from the factory, is certied to operate

within the altitude range indicated on the rating plate.

If a eld conversion to a dierent altitude range or

dierent gas should be necessary, conversion parts

are available.

See Section 12.C on page 50 for part numbers.

3. Use the gures in Table 4 to size the gas inlet piping

from the gas meter to the heater. Check all local

codes for compliance before installing the heater.

4. A sediment trap (drip leg) must be installed ahead

of the gas controls (see Figure 8). Fit the trap with

a threaded cap which can be removed for cleaning.

5. Install a manual gas shuto valve for service and

safety. Do not use a restrictive gas cock. Flexible

gas connectors, if used, must be CSA rated for the

total input rating of the boiler.

6. Disconnect the boiler and its individual shuto

valve from the gas supply system during pressure

testing of the system at pressures higher than 1/2

pounds per square inch (psi) (3.45 kilopascals

[kPa]). If the test pressure is equal to or less than

1/2 psi (3.45 kPa), close the manual shuto valve

on the heater during the pressure test.

7. If the gas supply pressure is less than required,

check for undersized pipe between the meter and

the boiler, a restrictive tting, or an undersized

gas meter. Gas supply pressures to the heater are

listed in Table 3 on page 17.

SECTION 4 Gas Connections

4.A Gas Supply and Piping

1. Gas piping installation must be in accordance

with the latest edition of ANSI Z223.1 and all local

codes. In Canada, the installation must be in

accordance with CSA-B149.1 and all local codes

that apply.

CAUTION

Permanent damage to the gas valve will occur if the

following procedures are not followed.

ATTENTION

Vous endommagerez la soupape de gaz si vous ne

respectez pas les procédures suivantes.

NOTE: The maximum inlet gas pressure must not

exceed the specied value. The minimum value

listed is for the purpose of input adjustment. Refer

to Table 4

Table 3. Gas Supply Pressure Requirements

Supply Pressure Minimum Maximum

Natural Gas

5.5 Inches WC 10.5 Inches WC

(1.3 kPa) (2.5 kPa)

LP Gas

10.0 Inches WC 13.0 Inches WC

(2.4 kPa) (3.1 kPa)

Table 4. Gas Pipe Size Requirements*

Boiler Size

50 75 100 125 150 200

Needed Pipe Size

0-50ft

0-15m

1/2 3/4 3/4 3/4 3/4 1

50-100ft

15-30m

1/2 3/4 3/4 1 1 1-1/4

100-200ft

30-60m

3/4 1 1 1 1-1/4 1-1/4

*Note: These gures are for Natural Gas (.65 Sp. Gr.),

and are based on 1/2" water column pressure drop.

For LP (1.5 Sp. 11” wc) and 1/2” water column drop.

Check supply pressure with a manometer, and local code

requirements for variations. Pipe ttings must be consid-

ered when determining gas pipe size. See National Fuel

Gas Code or local code requirements for complete pipe

sizing requirements.

Equivalent

Distance

From Gas

Meter

1/2”1/2”

1/2”

1/2” 3/4” 3/4”

3/4”3/4” 3/4”

3/4”

3/4”3/4”

3/4” 1” 1”

1”

continued on next page.

Page 18

BRADFORD WHITE

NOTE: The boiler and all other gas

appliances sharing the boiler gas supply

line must be ring at maximum capacity to

properly measure the inlet supply pressure.

Low gas pressure could be an indication of

an undersize gas meter and/or obstructed

gas supply line.

8. The correct manifold gas pressure is stamped

on the rating plate. The regulator is pre-set at

the factory, and normally requires no further

adjustment.

9. Before operating the boiler, the complete gas

supply system and all connections must be

tested for leaks using approved methods for the

authority having jurisdiction. Do not use an open

ame.

CAUTION

Some leak test solutions (including soap and

water) may cause corrosion or stress cracking.

Rinse the piping with water after testing.

ATTENTION

Certaines solultions d’essai d’étanchéité (y

compris l’eau et le savon) peuvent causer de

la corrosion ou de la ssuration. Rincez les

tuyaux à l’eau apprès l’essai d’étanchéité.

WARNING

The boiler is designed for use with either natural

gas or LP gas, but only ships from the factory as

natural gas. Conversion kits are available. DO

NOT ATTEMPT TO CONVERT THIS HEATER

FOR USE WITH ANY OTHER TYPE OF FUEL.

AVERTISSEMENT

Le unit est conçu pour être utilisé avec du gaz

naturel ou du gaz LP, mais seulement des

navires de l’usine comme gaz naturel. Des

kits de conversion sont disponibles. NE PAS

ESSAYER DE CONVERTIR CET APPAREIL À

UN AUTRE TYPE DE GAZ.

4.B LP Gas Conversion

A conversion kit is available to convert this boiler for

operation on LP Gas. The boiler’s existing gas valve

is converted by changing the valve’s outlet regulator

spring and resetting the outlet pressure regulator.

See Section 12.C on page 50 for kit part numbers.

The Gas Conversion Kit includes the following:

1. Gas valve regulator spring

2. Main Burner and Pilot Orices

3. Installation Instructions

4. Conversion Label

4.C Special Precautions for LP Gas

LP Gas is heavier than air and can therefore more

readily collect or “pool” in enclosed areas if provision

for proper ventilation is not made. Be sure to pay

special attention to proper ventilation for LP gas.

Locate boilers a safe distance from LP gas cylinders

and lling equipment. In the United States, consult

the “National Fuel Gas Code” ( NFPA 54 / ANSI

Z223.1, latest edition ) or in Canada, the Propane

Installation Code ( CSA-B149.2 ), any local codes and

re protection authorities about specic installation

restrictions in your area.

Page 19

Table 5. Water Flow Requirements and Temperature Rise

Water Flow Requirements

Electrical

Data

All Sizes

with

Low Loss Header without Low Loss Header

Voltage 120 V 120 V

FLA .70 A .20 A

MCA .9 A .25 A

MOP 15 A 15 A

Minimum Clearances

Left + Right Sides Front Flue and Rear Top

Size inches cm inches cm inches cm inches cm

ALL 4 10 2 5 6 15 20 51

Minimum

Clearances

from

Adjacent

Construction

Temperature Rise

15°F 8°C 20°F 11°C 25°F 14°C

Size Flow Rate Headloss Flow Rate Headloss Flow Rate Headloss

gpm l/s ft m gpm l/s ft m gpm l/s ft m

50 5.3 0.3 0.3 0.1 4.0 0.3 0.2 0.1 3.2 0.2 0.1 0.1

75 8.0 0.5 0.6 0.2 6.0 0.4 0.3 0.1 4.8 0.3 0.2 0.1

100 10.7 0.7 1.3 0.4 8.0 0.5 0.7 0.2 6.4 0.4 0.5 0.2

125

13.3 0.8 2.2 0.7 10.0 0.6 1.3 0.4 8.0 0.5 0.8 0.2

150

17.0 1.1 2.5 0.8 12.8 0.8 1.8 0.5 10.3 0.6 1.2 0.4

200

22.8 1.4 5.0 1.5 17.0 1.0 3.1 0.9 13.7 0.9 1.9 0.6

*Models 125-200 ship with a low loss header with integral pump, so a separate boiler pump does not need to be sized or  eld-supplied.

NOTES:

1. Shaded area represents typical temperature rise.

2. gpm = water  ow in gallons per minute.

3. l/s = water  ow in liters per second.

4. ft = pressure drop (headloss) through the boiler in feet of water.

5. m = pressure drop (headloss) through the boiler in meters of water.

Sizing

Data

Heating Capacity AFUE % Water Gas

Input Nat Gas Conn. Conn.

Size MBTU/h kW MBTU/h kW % in. in.

50 50 14.7 42 12.6 84 1-1/4 3/4

75 75 22.0 63 18.8 84 1-1/4 3/4

100 100 29.3 84 24.9 84 1-1/4 3/4

125 125 36.6 105 31.1 84 1-1/4 3/4

150 150 44.0 126 37.2 84 1-1/4 3/4

200 199 58.3 168 49.2 84 1-1/4 3/4

SECTION 5 PUMP REQUIREMENTS

5.A Pump Sizing

Table 6. Equivalent Feet and Head Loss

Model

Size

GPM

Equivalent Feet

of ¾” Type M

Copper

Feet of Head

Loss

50 5

75 4.9

100 6.5

75 7.5

75 10.3

100 13.8

100 10

75 17.6

100 23.5

RESIDENTIAL BOILERS

Brute-Mini

This boiler has a water tube design, and requires

correct water ow for proper operation and long life.

Models 125-200 are built with a low loss header with

integral pump that serves the boiler and ensures proper

water ow. Optional low loss header with integral pump

kits, or kits with just pumps, are oered for use with

models 50, 75 and 100. When neither of the optional

kits are used with models 50, 75 and 100, care must be

taken to choose pumps and in the design of the piping.

A typical residential pump can ow enough water for the

average, properly-designed, zone system for models 50

and 75. If a zone exceeds 100 equivalent feet of 3/4”

pipe, a pump may not be large enough to overcome the

resistance and ensure proper water ow through the

boiler.

To size the pump use the total equivalent pipe length

to nd its headloss and add it to the boiler headloss in

Table 6. Use pump curves for pump selection. Primary/

Secondary piping is another option to reduce the need

to use larger pumps.

For boilers with the LLH system the boiler will

maintain the proper ow through the boiler

regardless of the ow through the system. This

means that the system ow is now only critical to

the building comfort not the boiler safety. Headloss

is only calculated through the individual zones for

sizing of the system pump(s).

Page 20

SECTION 6 WATER

CONNECTIONS

6.A Water Piping

NOTE: This boiler must be installed in a closed

pressure system with a minimum of 12 psi (82.7kPa)

static pressure at the boiler.

Section 6.F on page 21 shows ‘typical’ plumbing

installations. Be sure to provide unions and isolation

valves at the boiler inlet and outlet so it can be isolated

for service. Check local codes for specic plumbing

requirements before beginning the installation.

An ASME pressure relief valve is supplied on all JX

boilers, and is pre-set at 30 PSI. The valve outlet

piping should be discharged to a drain and must be

piped to discharge near the oor. It cannot have a

threaded end at its termination point nor be of a closed

circuit design.

A pressure reducing valve (automatic feed) must

be used to maintain the system at constant proper

pressure. Supply properly installed purge valves to

eliminate air from each circuit.

A drain valve is supplied with the boiler. This valve is

installed on the lower right side of the boiler and is

used for draining the unit for service. If the boiler is

being drained so that it will be left in a space that may

freeze, it is critical to remove the two lower plugs from

the left side of the heat exchanger. See Section 9.E on

page 40 This is the only way to ensure all the water

is out of the heat exchanger.

Be sure at least one air elimination device is installed

in the system to eliminate trapped air from the system.

Hot water piping should be supported by suitable

hangers or oor stands, NOT by the boiler. Due

to expansion and contraction of copper pipe,

consideration should be given to the type of hangers

used. Rigid hangers could transmit noise through the

system caused by the piping sliding in the hangers.

Gas piping shall also be supported by suitable hangers

or oor stands, not the boiler.

A properly sized expansion tank must be included in

the system.

6.B Low Loss Header with Integral Pump

Models 125-200 are provided with a Low Loss Header

to ensure that the boiler always receives adequate

water ow for optimum eciency, ease of installation

and long life. The Low Loss Header, with its integral

Boiler Pump, eliminates the need for by-pass piping

because it allows the system ow and the boiler ow

to be independent of each other without the cost

and complexity of a typical Primary / Secondary type

system. See Section 6.F

6.C Chilled Water Systems

If the boiler is installed in conjunction with refrigeration

systems, it shall be installed so that the chilled

medium is piped in parallel with the heating boiler with

appropriate valves to prevent the chilled medium from

entering the heating boiler.

When boiler piping is connected to heating coils, which

are in close proximity to refrigerated air circulation, there

must be ow control valves or other automatic methods

to prevent gravity circulation of the boiler water during

the cooling cycle.

6.D Oxygen Permeable Systems

This boiler must not be directly connected to a heating

system utilizing oxygen permeable tubing. Provide a

water-to-water heat exchanger between systems to

prevent corrosion of ferrous metals such as the boiler’s

piping, wet walls, etc. Air elimination devices are not

sucient protection and corrosion damage is not

covered under the limited warranty.

6.E Anti-freeze

Non-toxic HVAC anti-freeze may be added to the

hydronic system provided the concentration does not

exceed 50%, and the anti-freeze contains an anti-

foammant and rust inhibitor. Follow the anti-freeze

manufacturer’s recommendations for yearly or biannual

replacement of system anti-freeze. Never use toxic

automotive anti-freeze in a boiler system.

NOTE: Manufacturer supplied pumps are not all

capable of maintaining the reduced temperature rise

required with glycol concentrations greater than 35%.

If glycol concentrations required are greater than 35%

a eld supplied pump should be used.

CAUTION

Dierent glycol products may provide varying degrees

of protection. Glycol products must be maintained

properly in a heating system, or they may become

ineective. Consult the glycol specications, or

the glycol company, for information about specic

products, maintenance of solutions, and set up

according to your particular conditions.

The Low Loss Header is available for the model 50,

75, and 100 as an option for smaller systems that

could benet from its use.

BRADFORD WHITE

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