Laars BMT2H, BMT2V User Manual
Installation and Operation Instructions Document 1245F
Installation and Operation Instructions for
Brute Deluxe
Hydronic Boiler
Model BMT2H
Volume Water Heater
Model BMT2V
Sizes 500–2000 MBTU/h
FOR YOUR SAFETY: This product must be installed and serviced by a professional service technician,
qualied in hot water boiler 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. For indoor installations, as an additional
measure of safety, Bradford White strongly recommends installation of suitable Carbon Monoxide
detectors in the vicinity of this appliance and in any adjacent occupied spaces.
WARNING
If the information in this manual is not
followed exactly, a 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 qualied 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 inammables 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 qualié ou
par le fournisseur de gaz.
AVERTISSEMENT
H2329101G
Page 2
Bradford White Corp
TABLE OF CONTENTS
SECTION 1. General Information
1.1 Introduction ......................................................... 3
1.2 Model Identication .............................................3
1.3 Warranty ............................................................. 4
1.4 Dimensions ......................................................... 4
1.5 Locating the Appliance........................................4
1.6 Locating Pump-Mounted Water Heater
with Respect to Storage Tank(s) ......................... 4
1.7 Locating Pump-Mounted Boiler with Respect
to Return/Supply Header .................................... 5
1.8 Locating Appliance for Correct Horizontal Vent/ ...
Ducted Air Distance from Outside Wall ......................... 5
SECTION 2. Venting and Combustion Air
2.1 Combustion Air ................................................... 7
2.1.1 Combustion Air From Room ...............................7
2.1.2 Intake Combustion Air......................................... 7
2.2 Venting ................................................................ 8
2.2.1 Vent Categories .................................................. 8
2.2.2 Category I Vent ................................................... 8
2.2.3 Common Venting Systems .................................8
2.2.4 Category III Vent ................................................. 8
2.3 Locating Vent & Combustion Air Terminals ......... 9
2.3.1 Side Wall Vent Terminal ...................................... 9
2.3.2 Side Wall Combustion Air Terminal ..................... 9
2.3.3 Vertical Vent Terminal ......................................... 9
2.3.4 Vertical Combustion Air Terminal ...................... 11
2.4 Common Vent Test — Boilers ........................... 11
2.5 Vent Terminals for Outdoor Units ...................... 12
SECTION 3. Gas Supply and Piping
3.1 Gas Supply and Piping ..................................... 12
SECTION 4A. Water Connections — Boiler
4A.1 Heating System Piping:
Hot Supply Connections — Boiler ....................13
4A.2 Cold Water Make-Up — Boiler ......................... 14
4A.3 Water Flow Requirements — Boiler ................. 14
4A.4 Freeze Protection — Boiler............................... 14
SECTION 4B. Water Connections —
Water Heaters
4B.1 Water System Piping — Water Heater ............. 14
4B.2 Hot Water Supply Piping — Water Heater ........ 15
4B.3 Water Flow Requirements — Water Heater ..... 15
4B.4 Combined Water Heating (potable)
and Space Heating — Water Heater ................ 15
4B.5 Freeze Protection – Water Heater .................... 15
SECTION 5. Electrical Connections
5.1 Main Power ....................................................... 21
5.1.1 Changing Single Circuit to Two Circuits ............ 21
5.2 Field Wiring ....................................................... 21
5.3 External Staging Control Wiring........................ 26
SECTION 6. Operating Instructions
6.1 Sequence of Operation ..................................... 26
6.2 Filling the Boiler System ................................... 27
6.3 Operating Temperature Control ........................27
6.4 External Boiler Operations ................................ 28
6.5 Limit Controls .................................................... 28
6.6 Operating the Burner and Set Up ..................... 28
6.6.1 Set Up for 0 to 2500 Feet Altitude..................... 28
6.6.2 High Altitude Adjustment and Set Up ................ 28
6.7 Shutting Down the Brute Deluxe....................... 29
6.8 To Restart the Brute Deluxe.............................. 29
SECTION 7. Maintenance
7.1 System Maintenance ........................................ 29
7.2 Appliance Maintenance and
Component Description .................................... 29
7.2.1 Burners ............................................................. 30
7.2.2 Filter .................................................................. 30
7.2.3 Gas Valves ........................................................ 30
7.2.4 Manual Reset High Limit Control ...................... 30
7.2.5 Temperature Control ......................................... 30
7.2.6 Ignition Controls ................................................ 30
7.2.7 Ignitors/Sensor.................................................. 30
7.2.8 Transformer ...................................................... 30
7.2.9 Blowers ............................................................. 31
7.2.10 Flow Switch .......................................................31
7.2.11 Heat Exchanger Coil ........................................ 31
SECTION 8. Trouble Shooting
8.1 Resolving Lockouts........................................... 31
8.2 Delayed Ignition — Possible Causes................ 32
8.3 Short Cycling — Boiler...................................... 32
8.4 Short Cycling — Water Heater .........................32
8.5 High Gas Consumption..................................... 32
SECTION 9. Replacement Parts
9.1 General Information .......................................... 32
9.2 Parts List . ......................................................... 32
Brute Deluxe (500-2000), Install & Operating
Page 3
SECTION 1.
General Information
USING THIS MANUAL – Because Brute
Deluxe Boilers and Water Heaters are identical
appliances, with the exception of materials of
manufacture, labels and ultimate use application,
this manual provides information for the proper
installation, operation and maintenance of all
products. Where differences exist between the
application of the appliances and their operation, the
sections pertinent to only one appliance or the other
will be so identied.
In the Commonwealth of Massachusetts, this app-
liance must be installed by a licensed plumber or gas tter.
WARNING
The Brute Deluxe hydronic boiler or water heater
must be installed in accordance with the procedures
detailed in this manual, or the Bradford White Corp.
warranty may be voided. The installation must
conform to the requirements of the local jurisdiction
having authority, and, in the United States, to the
latest edition of the National Fuel Gas Code, ANSI
Z223.1/NFPA54. In Canada, the installation must
conform to the latest edition of the Natural Gas
and Propane Installation Code, CSA B149.1 and/
or local codes. Where required by the authority
having jurisdiction, the installation of Bradford White
appliances must conform to the Standard for Controls
and Safety Devices for Automatically Fired Boilers,
ANSI/ASME CSD-1. Any modications to the unit, its
gas controls, or wiring may void the warranty. If eld
conditions require modications, consult the factory
representative before initiating such modications.
1.1 Introduction
This manual provides information necessary for
the installation, operation, and maintenance of Bradford
White Corp. Brute Deluxe copper tube appliances. Read
it carefully before installation.
All application and installation procedures should
be reviewed completely before proceeding with the
installation. Consult the Bradford White factory, or
local factory representative, with any issues or questions
regarding this equipment. Experience has shown
that most operating issues are caused by improper
installation.
The Brute Deluxe appliance is protected against
over pressurization. A pressure relief valve is tted to
all appliances. It is installed on the outlet header, at the
water outlet of the appliance.
IMPORTANT: The inlet gas pressure to the appliance
must not exceed 13" W.C. (3.2kPa).
All installations must be made in accordance with:
1). In the U.S., the " National Fuel Gas Code"ANSI
Z223.1/NFPA54, Latest Edition and all applicable local
codes as required by the Authorities Having Jurisdiction
(AHJ), or
2). In Canada, the "Natural Gas and Propane
Installation Code", CSA B149.1, latest edition and
all applicable local codes as required by the AHJ.
All electrical wiring is to be done in accordance with:
1). In the U.S., the "National Electrical Code"
(NEC), ANSI/NFPA 70, latest Edition and all applicable
local codes as required by the AHJ, or
2). In Canada, the “Canadian Electrical Code - Part
1”, CSA STD. C22.1 and all applicable local codes as
required by the AHJ.
This appliance must be electrically grounded in
accordance with the applicable codes and standards
referenced above.
1
2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
B
M T 2 C K 1
SERIES
B M T 2
USAGE
H - HYDRONIC
V - VOLUME WATER
SIZE
0 5 0 0
0 7 5 0
1 0 0 0
1 2 5 0
1 5 0 0
1 7 5 0
2 0 0 0
FUEL
N - NATURAL
P - PROPANE
LOCATION
C - INDOOR/
OUTDOOR
FIRING
MODE
K - 2-Stage
REVISION
1 - FIRST
REV
HEAT EXCHANGER
B - GLASS-LINED CAST IRON/
COPP/BRZ TRIM
C - GLASS-LINED CASTIRON/
COPP.
N - GLASS-LINED CAST IRON/
CU-NICKEL
P - GLASS-LINED CAST IRON /
CU-NICKEL, BRZ TRIM
HLW STAMP (MT2V only)
2 - GLASS-LINED CAST IRON/
COPPER / BRZ TRIM
5 - GLASS-LINED CAST IRON/
CU-NICKEL / BRZ TRIM
(std.BMT2V)
(std.BMT2H, n/a BMT2V)
(n/a BMT2V)
OPTIONS
CODE
X - STD
J - CSD-1,
GAP,
FM
X - NO PUMP
H - PUMP MOUNTED
TACO, HARD
WATER
N - PUMP MOUNTED,
TACO, NORMAL
WATER
S - PUMP MTD, TACO
SOFT WATER PUMP
C - PUMP MOUNTED
B&G, HARD
WATER
B - PUMP MOUNTED,
B&G, NORMAL
WATER
D - PUMP MTD, B&G
SOFT WATER PUMP
PUMP
OPTIONS
(BMT2V)
(BMT2V, BMT2H)
(MT2V)
(BMT2V)
(BMT2V, BMT2H)
(BMT2V)
Page 4
Bradford White Corp
1.2 Model Identication
Consult the rating plate on the unit. The following
information describes the model number structure.
1-4 Model Series Designation
B M T 2 = Bradford White, Brute Deluxe
5 Usage
H = Hydronic
V = Volume Water
6-9 Size
0 5 0 0 = 500,000 BTU/h input
0 7 5 0 = 750,000 BTU/h input
1 0 0 0 = 999,000 BTU/h input
1 2 5 0 = 1,250,000 BTU/h input
1 5 0 0 = 1,500,000 BTU/h input
1 7 5 0 = 1,750,000 BTU/h input
2 0 0 0 = 1,999,000 BTU/h input
10 Fuel
N = Natural Gas
P = Propane
11 Location
C = Indoor and Outdoor
12 Firing Mode
K = Two-stage
13 Revision
1 = First version of design
14 Heat Exchanger
B = Glass-lined cast iron / copper / bronze trim
C = Glass-lined cast iron / copper
N = Glass-lined cast iron / cupro-nickel
P = Glass-lined cast iron / cu-nickel / bronze trim
15 Option Code
X = Standard unit
J = CSD-1, FM, IRI, IL
16 Pump Options
X = No Pump
H = Pump mounted BMT2V, TACO, hard water pump
N = Pump mounted (any), TACO, normal water pump
S = Pump mounted BMT2V, TACO, soft water pump
C = Pump mounted BMT2V, B&G, hard water pump
B = Pump mounted (any), B&G, normal water pump
D = Pump mounted BMT2V, B&G, soft water pump
(std. on water heaters)
(std. on boilers, n/a on water heaters)
(n/a on water heaters)
1.3 Warranty
Bradford White Corp. appliances are covered by a
limited warranty. Owners should submit online warranty
registration at
All warranty claims must be made to an authorized
Bradford White wholesale rep / distributor. To nd
information about the wholesalers in your area, please go
to www.bradfordwhite.com. and click on 'Wholesalers'.
Claims must include the serial number and model
number (this information can be found on the rating
www.BradfordWhite.com.
plate), installation date, and name of the installer.
Shipping costs are not included in the warranty
coverage.
Some accessory items are shipped in separate
packages. Verify receipt of all packages listed on the
packing slip. Inspect everything for damage immediately
upon delivery, and advise the carrier of any shortages
or damage. Any such claims should be led with the
carrier. The carrier, not the shipper, is responsible for
shortages and damage to the shipment whether visible or
concealed.
1.4 Dimensions
See Figures 1 and 2.
1.5 Locating the Appliance
The appliance should be located to provide
clearances on all sides for maintenance and inspection.
It should not be located in an area where leakage of any
connections will result in damage to the area adjacent to
the appliance or to lower 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 appliance.
The appliance is design certied by CSAInternational for installation on combustible ooring; in
basements; in closets, utility rooms or alcoves. Brute
Deluxe Boilers or Water Heaters must never be
installed on carpeting. The location for the appliance
should be chosen with regard to the vent pipe lengths
and external plumbing. The unit shall be installed
such that the gas ignition system components are
protected from water (dripping, spraying, rain, etc.)
during operation and service (circulator replacement,
control replacement, etc.). When vented vertically, the
Brute Deluxe must be located as close as practical to
a chimney or outside wall. If the vent terminal and/or
REQUIRED RECOMMENDED
APPLIANCE CLEARANCE FROM SERVICE ACCESS
SURFACE COMBUSTIBLE MATERIAL CLEARANCE
inches cm inches cm
Left Side 1 2.5 24 61
Right Side 1 2.5 24 61
Top 1 2.5 12 30
Back 1 2.5 **12** 30**
Front 1 2.5 36 91
Vertical
(Category 1) 6* 15.2*
Vent
Horizontal per UL1738 venting
(Category 3) system supplier’s
Vent instructions
*1" (2.5cm) when b-vent is used.
**When vent and/or combustion air connects to the back,
recommended clearance is 36" (91cm).
Table 1. Clearances.
Brute Deluxe (500-2000), Install & Operating
Page 5
Air Vent Shipping Weight
Unit Conn. Conn.
Size A B C D E W V lbs kg
500 33¾ 85 16¾ 43 6½ 17 10 25 8 20 6 15 8 20 425 193
750 45¾ 116 22¾ 53 6½ 17 10 25 9½ 24 8 20 10 25 505 229
1000 57¾ 147 28¾ 73 6½ 17 10 25 9½ 24 8 20 10 25 615 279
1250 68¼ 173 34 87 10¼
1500 78¾ 200 39½ 100 10¼
1750 89¼ 227 44¾ 113 10¼
2000 99¾ 253 49¾ 127 10¼
NOTES: 1. Add 55 lbs (25kg) for pump-mounted units.
Dimensions in inches cm.
Figure 1. Dimensional Data (standard units).
26 10 25 9 23
26 10 25 9 23
26 10 25 9 23
26 10 25 9 23 12 30 14 36 955 434
combustion air terminal terminate through a wall, and
there is potential for snow accumulation in the local
area, both terminals should be installed at an appropriate
level above grade.
The dimensions and requirements that are shown in
Table 1 should be met when choosing the locations for
the appliance.
1.6 Locating Pump-Mounted Water Heater
with Respect to Storage Tank(s)
For best results, a pump-mounted Brute Deluxe
water heater should be located within 15 feet (4.6m) of
the storage tank(s). The pump is sized for 30 feet (9.1m)
of piping.
If the appliance must be installed with longer
piping runs, then larger diameter pipe or tubing shall be
12 30
12 30
12 30
12 30 675 306
12 30 760 345
14 36 825 375
used. Consult the factory for assistance.
1
Page 6
Bradford White Corp
Air Vent
Conn. Conn.
Size A B C D E F W V
500 33¾ 86 16¾ 43 6½ 17 10 25 8 20 46¼ 117 6 15 8 20
750 45¾ 116 22¾ 58 6½ 17 10 25 9½ 24 58¼ 148 8 20 10 25
1000 57¾ 147 28¾ 73 6½ 17 10 25 9½ 24 70¼ 178 8 20 10 25
1250 68¼ 173 34¼ 87 10¼
1500 78¾ 200 39½ 100 10¼
1750 89¼ 227 44¾ 113 10¼
26 10 25 9 23 80¾ 205 12 30 12 30
26 10 25 9 23 91¼ 232 12 30 12 30
26 10 25 9 23 101¾ 258 12 30 14 36
2000 99¾ 253 49¾ 127 10¼ 26 10 25 9 23 112¼ 285 12 30 14 36
Figure 2. Dimensional Data (pump-mounted models).
HORIZONTAL INTAKE AIR
VENT COLLAR VENT PIPE PIPE MAX. PIPE MAX. NO. SIDE WALL SIDE WALL
SIZE SIZE DIAMETER DIAMETER LENGTH OF ELBOWS VENT COMBUSTION
TERMINAL AIR TERMINAL
in. cm in. cm in. cm ft. m PART NUMBER PART NUMBER
500 8 20 6 15 6 15 50 15 3 CA001401 20260701
750 10 25 8 20 8 20 50 15 3 CA001402 20260703
1000 10 25 8 20 8 20 50 15 3 CA001402 20260703
1250 12 30 10 25 10 25 50 15 3 CA001405 20260705
1500 12 30 10 25 10 25 50 15 3 CA001405 20260705
1750 14 36 12 30 12 30 50 15 3 CA001404 20260706
2000 14 36 12 30 12 30 50 15 3 CA001404 20260706
Table 2. Horizontal Vent / Combustion Air Parameters.
Brute Deluxe (500-2000), Install & Operating
Page 7
1.7 Locating Pump-Mounted Boiler with
Respect to Return/Supply Header
For the best results, a pump-mounted Brute Deluxe
Boiler should be located within 15 feet (4.6m) of the
supply and return headers. The pump is sized for 30 feet
(9.1m) of piping.
If the appliance must be installed with longer
piping runs, then larger diameter tubing shall be used.
Consult the factory for assistance.
1.8 Locating Appliance for Correct
Horizontal Vent/Ducted Air Distance
from Outside Wall
The forced draft combustion air blower/blowers
in the appliance has/have sufcient power to pull air
and vent properly when the following guidelines for
horizontal air and vent are followed (see Table 2).
NOTE: The vent collar size is larger than the size of
the vent pipe that can be used. Vent collar size and
horizontal pipe diameters can be found in Table 2. The
larger vent collar size is to accommodate Category I
(vertical) vent systems.
NOTE: When located on the same wall, the Brute
Deluxe combustion air intake terminal must be installed
a minimum of 12" (30cm) below the exhaust vent
terminal and separated by a minimum of 36 inches
(91cm) horizontally.
The air intake terminal must be installed high
enough to avoid blockage from snow, leaves and other
debris.
SECTION 2.
Venting and Combustion Air
2.1 Combustion Air
Brute Deluxe boilers and water heaters must
have provisions for combustion and ventilation air
in accordance with section 5.3, Air for Combustion
and Ventilation, of the National Fuel Gas Code, ANSI
Z223.1, or Sections 7.2, 7.3 or 7.4 of CSA B149.1,
Installation Codes, or applicable provisions of the local
building codes.
A Brute Deluxe appliance may receive combustion
air from the space in which it is installed, or it can be
ducted directly to the unit from the outside. Ventilation
air must be provided in either case.
2.1.1 Combustion Air From Room
In the United States, the most common
requirements specify that the space shall communicate
with the outdoors in accordance with method 1 or 2,
which follow. Where ducts are used, they shall be of the
same cross-sectional area as the free area of the openings
to which they connect.
Method 1: Two permanent openings, one
commencing within 12 inches (30 cm) of the top and one
commencing within 12 inches (30 cm) of the bottom,
of the enclosure shall be provided. The openings shall
communicate directly, or by ducts, with the outdoors
or spaces that freely communicate with the outdoors.
When directly communicating with the outdoors, or
when communicating to the outdoors through vertical
ducts, each opening shall have a minimum free area of
1 square inch per 4000 BTU/hr (5.5 square cm/kW) of
total input rating of all equipment in the enclosure. When
communicating to the outdoors through horizontal ducts,
each opening shall have a minimum free area of not less
than 1 square inch per 2000 BTU/hr (11 square cm/kW)
of total input rating of all equipment in the enclosure.
Table 3 shows data for this sizing method, for each Brute
Deluxe model.
Method 2: One permanent opening, commencing
within 12 inches (30 cm) of the top of the enclosure,
shall be permitted. The opening shall directly
communicate with the outdoors or shall communicate
through a vertical or horizontal duct to the outdoors or
spaces that directly communicate with the outdoors and
shall have a minimum free area of 1 square inch per
3000 BTU/hr (7 square cm/kW) of the total input rating
of all equipment located in the enclosure. This opening
must not be less than the sum of the areas of all vent
connectors in the conned space.
Other methods of introducing combustion and
ventilation air are acceptable, providing they conform to
the requirements in the applicable codes listed above.
In Canada, consult local building and safety codes
or, in absence of such requirements, follow CSA B149.1.
2.1.2 Intake Combustion Air
The combustion air can be taken through the wall,
or through the roof. When taken from the wall, it must
be taken from out-of-doors by means of the Bradford
White horizontal wall terminal (see Table 2). When
taken from the roof, a eld-supplied rain cap or an elbow
arrangement must be used to prevent entry of rain water
500 125 807
750 188 1213
1000 250 1613
1250 313 2020
1500 375 2420
1750 438 2826
2000 500 3226
UNIT
SQUARE INCHES SQUARE CM
SIZE
*Net Free Area in Square Inches / Square cm
Area indicated is for one of two openings; one at oor level and one
at the ceiling, so the total net free area could be double the gures
indicated.
This chart is for use when communicating directly with the
outdoors. For special conditions and alternate methods, refer to the
latest edition of ANSI Z223.1.
Note: Check with louver manufacturers for net free area of
louvers. Correct for screen resistance to the net free area if a
screen is installed. Check all local codes applicable to combustion air.
Table 3. Combustion Air Openings.
EACH OPENING*
Page 8
Bradford White Corp
(see Figure 3).
Use single-wall galvanized pipe, per Table 4, for
the combustion air intake (see Table 2 for appropriate
size). Route the intake to the heater as directly as
possible. Seal all joints with tape. Provide adequate
hangers. The unit must not support the weight of the
combustion air intake pipe. Maximum linear pipe length
allowed is 50 feet (15.2m). Three elbows have been
calculated into the 50-foot (15.2m) linear run. Subtract
10 allowable linear feet (3.0m) for every additional
elbow used (see Table 2). When fewer than 3 elbows are
used, the maximum linear pipe length allowed is still 50
feet (15.2m).
The connection for the intake air pipe is on the
lter box. The Brute Deluxe appliances have venting and
combustion air ducting attached to the top.
In addition to air needed for combustion, air
shall also be supplied for ventilation, including all air
required for comfort and proper working conditions for
personnel. The Brute Deluxe loses less than 1 percent of
its input rating to the room, but other heat sources may
be present.
2.2 Venting
2.2.1 Vent Categories
Depending upon desired Brute Deluxe venting,
it may be considered a Category I or a Category III
appliance. In general, a vertical vent system will be a
Category I system. However, in rare instances, a vertical
vent system may be considered Category III. In the
U.S., the National Fuel Gas Code (ANSI Z223.1-Latest
Edition), or in Canada the CSA B149.1 (latest edition),
denes a Category I vent system, and includes rules and
tables to size these vent systems. If the Brute Deluxe’s
vertical vent system does not satisfy the criteria for
Category I venting, it must be vented as a Category III
system.
All Brute Deluxe vent systems which discharge
horizontally (without the use of a power venter) are
considered Category III vent systems.
such that the ue draft does not exceed (negative) 0.1"
w.c.
If using a power venter for any type of Category I
venting, the draft should be set between (negative) 0.01
and 0.10" w.c.
2.2.3 Common Venting Systems
Brute Deluxe units are Category I fan-assisted
when vented vertically and adhering to all applicable
codes.
When common venting Brute Deluxe fan-assisted
unit with other appliances through one shared vertical
duct called a “common vent”, special care must be taken
by the installer to ensure safe operation. In the event that
the common vent is blocked, it is possible, especially
for fan-assisted devices, to vent backwards through
non-operating appliances sharing the vent, allowing
combustion products to inltrate occupied spaces. If the
appliances are allowed to operate in this condition,
serious injury or death may occur.
WARNING
Operation of appliances with a blocked common vent
may lead to serious injury or death. 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.
Proper vent sizing, construction and safety
requirements from the National Fuel Gas Code, ANSI
Z223.1 or in Canada, from CSA B149.1 as well as all
applicable local codes must be followed.
As an additional precaution, it is recommended
that a Carbon Monoxide (CO) alarm be installed in all
2.2.2 Category I Vent
When vented as a category I appliance, the vent
system must conform to the National Fuel Gas Code
(ANSI Z223.1-Latest Edition) in the U.S., or in Canada,
to CSA B149.1 (latest edition). The vent system must
be sized and installed for a Category I Fan-Assisted
Appliance.
If chimney height is greater than 25 feet, or if
multiple units are vented into the same vertical vent, a
barometric damper must be installed on each appliance,
TERM DESCRIPTION
Pipe Single-wall galvanized steel pipe, 24 gauge
minimum (either insulated or non-insulated)
Joint Permanent duct tape or aluminum tape
Sealing
Table 4. Required Combustion Air Piping Material.
Figure 3. Combustion Air and Vent Through Roof.
Brute Deluxe (500-2000), Install & Operating
Page 9
enclosed spaces containing combustion appliances.
Brute Deluxe units are not allowed to be vented
into a common horizontal vent system, unless a properly
sized vent fan is used, and the common vent system is
properly designed by the vent fan manufacturer or a
qualied engineer.
Refer to the installation and operating instructions
on all appliances to be common vented for instructions,
warnings, restrictions and safety requirements. 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.
2.2.4 Category III Vent
When the Brute Deluxe is vented with horizontal
discharge, it must be installed per this installation
manual and the venting system manufacturer’s
installation instructions. The vent system must be sealed
stainless steel (see Table 5).
Route the vent pipe to the heater as directly as
possible. Seal all joints and 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.
Horizontal runs must slope downwards not less than ¼
inch per foot (2 cm/m) from the unit to the vent terminal.
Reference Table 2 for the size of the Category III vent
system. Up to three elbows can be used with 50 linear
feet (15.2m) of pipe. Subtract 10 allowable linear feet
(3.0m) for every additional elbow used.
WARNING
The outdoor vent terminal gets hot. Unit must be
installed in such a way as to reduce the risk of burns
from contact with the vent terminal.
2.3 Locating Vent & Combustion Air
Terminals
2.3.1 Side Wall Vent Terminal
The appropriate Bradford White side wall vent
hood must be used, and is listed in the installation and
operation manual. The terminal provides a means of
installing the vent piping through the building wall, and
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
TERM DESCRIPTION
Pipe Must comply with UL Standard 1738
such as Type 29-4C Stainless Steel
(either insulated or non-insulated).
Joint Follow vent manufacturer’s instructions
Sealing
Table 5. Required Horizontal Venting Material.
the terminal:
1. Figure 4 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. When possible, locations
under windows or near doors should be avoided.
5. Locate the vent terminal so that it cannot be
blocked by snow. The National Fuel gas code
requires that it be at a minimum of 12" above
grade. In a location that has the possibility of snow
accumulation, it is critical the installer places the
vent at least 12" higher than the maximum potential
snow line. Seek local municipalities and their codes
for appropriate installation techniques.
6. Locate the terminal so the vent exhaust does not
settle on building surfaces or other nearby objects.
Vent products may damage such surfaces or
objects.
7. If the boiler or water heater uses ducted combustion
air from an intake terminal located on the same
wall, locate the vent terminal at least 3 feet (0.9m)
horizontally from the combustion air terminal, and
locate the vent terminal at least 1 foot (0.3m) above
the combustion air terminal.
2.3.2 Side Wall Combustion Air Terminal
The Bradford White side wall combustion air
terminal (see Table 2) must be used when the unit takes
its combustion air through a duct from a side wall.
Consider the following when installing the terminal:
1. Do not locate the air inlet terminal near a source
of corrosive chemical fumes (e.g., cleaning uid,
chlorinated compounds, etc.)
2. Locate the terminal so that it will not be subject to
damage by accident or vandalism.
3. Locate the combustion air terminal so that it
cannot be blocked by snow. The National Fuel
gas code requires that it be at a minimum of 12"
above grade. Depending on local conditions, the
installer should ensure that it remains at least 12"
above the maximum potential snow line. Seek
local municipalities and their codes for appropriate
installation techniques.
WARNING: It is critical that the combustion
air intake and the vent terminals remain at least
12" above the maximum potential snow line.
If either the vent terminal or the air terminal is
blocked by snow, there may be potential for the
unit to produce excess carbon monoxide and or
recirculate ue gasses into the building/dwelling.
Page 10
U.S. Installations (see note 1) Canadian Installations (see note 2)
A= Clearance above grade, veranda, porch, 12 inches (30 cm) 12 inches (30 cm)
deck, or balcony
B= Clearance to window or door that may be 4 feet (1.2 m) below or to side of opening; 36 inches (91 cm)
opened 1 foot (30 cm) above opening
C= Clearance to permanently closed window See note 4 See note 5
D= Vertical clearance to ventilated soft located
above the terminal within a horizontal See note 4 See note 5
distance of 2 feet (61cm) from the center
line of the terminal
E= Clearance to unventilated soft See note 4 See note 5
F= Clearance to outside corner See note 4 See note 5
G= Clearance to inside corner See note 4 See note 5
H= Clearance to each side of center line 3 feet (91 cm) within a height 15 feet above
extended above meter/regulator assembly See note 4 the meter/regulator assembly
I= Clearance to service regulator vent outlet See note 4 3 feet (91 cm)
J= Clearance to nonmechanical air supply inlet
to building or the combustion air inlet to 4 feet (1.2 m) below or to side of opening; 36 inches (91 cm)
any other appliance 1 foot (30 cm) above opening
K= Clearance to a mechanical air supply inlet 3 feet (91 cm) above if within 10 feet (3 m) 6 feet (1.83 m)
horizontally
Vent termination not allowed in this location
Vent termination not allowed in this location for category IV appliances. A vent shall not
L= Clearance above paved sidewalk or paved for category IV appliances. For Category III terminate directly above a sidewalk or paved
driveway located on public property appliances, vent must terminate at least 7 driveway that is located between two single
feet (2.13m) above the sidewalk or driveway. family dwellings and serves both dwellings.
For Category III appliances that do not violate
the previous condition, vent must terminate
at least 7 feet (2.13m) above the sidewalk or
driveway.
M= Clearance under veranda, porch, deck, See note 4 12 inches (30 cm) (see note 3)
or balcony
Notes:
1. In accordance with the current ANSI Z223.1 / NFPA 54 National Fuel Gas Code.
2. In accordance with the current CSA-B149.1 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 specied 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 specied in CSA-B149.1, clearance is in accordance with local installation codes and the requirements of the gas supplier.
Bradford White Corp
Figure 4. Combustion Air and Vent Through Side Wall.
Brute Deluxe (500-2000), Install & Operating
Page 11
Personal injury or DEATH may occur. Natural
snowfall, drifting, and banking should all be taken
into account when locating the terminals in a
potential snow environment.
4. If the Brute Deluxe is side-wall vented to the same
wall, locate the vent terminal at least 3 feet (0.9m)
horizontally from the combustion air terminal, and
locate the vent terminal at least 1 foot (0.3m) above
the combustion air terminal (see Figure 4).
2.3.3 Vertical Vent Terminal
When the unit is vented through the roof, the
vent must extend at least 3 feet (0.9m) above the point
at which it penetrates the roof. It must extend at least
2 feet (0.6m) higher than any portion of a building
within a horizontal distance of 10 feet (3.0m), and high
enough above the roof line to prevent blockage from
snow. When the combustion air is taken from the roof,
the combustion air must terminate at least 12" (30cm)
below the vent terminal (see Figure 3). Seek local
municipalities and their codes for appropriate installation
techniques.
From Massachusetts Rules and Regulations 248 CMR 5.08:
(a) For all side wall horizontally vented gas fueled equip-
ment installed in every dwelling, building or structure
used in whole or inpart for residential purposes, including those owned or operated by the Commonwealth and
where 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,
the following requirements shall be satised:
1. INSTALLATION OF CARBON MONOXIDE DETECTORS.
At the time of installation of the side wall horizontal vented
gas fueled equipment, the installing plumber or gastter shall
observe that a hard-wired carbon monoxide detector with
an alarm and battery back-up is installed on the oor level
where the gas equipment is to be installed. In addition, the
installing plumber or gastter 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 horizontal vented gas
fueled equipment. It shall be the responsibility of the property
owner to secure the services of qualied licensed professionals for the 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 detector with alarm and battery
back-up may be installed on the next adjacent oor level.
b. In the event that the requirements of this 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 shall be installed.
2. APPROVED CARBON MONOXIDE DETECTORS. Each
carbon monoxide detector as required in accordance with the
above provisions shall comply with NFPA 720 and be ANSI/
UL 2034 listed and IAS certied.
3. SIGNAGE. A metal or plastic identication 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 the horizontally vented
gas fueled heating appliance or equipment. The sign shall
read, in print size no less than one-half (½) 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 equipment shall not ap-
prove 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
through 4.
(b) EXEMPTIONS: The following equipment is exempt from
248 CMR 5.08(2)(a) 1 through 4:
1. The equipment listed in Chapter 10 entitled "Equipment Not
Required To Be Vented" in the most current edition of NFPA
54 as adopted by the Board; and
2. Product Approved side wall horizontal vented gas fueled
equipment installed in a room or structure separate from the
dwelling, building or structure used in whole or in part for
residential purposes.
(c) MANUFACTURER REQUIREMENTS - GAS EQUIPMENT
VENTING SYSTEM PROVIDED. When the manufacturer of
Product Approved side wall horizontally vented gas equip-
ment provides a venting system design or venting system
components with the equipment, the instructions provided
by the manufacturer for installation of the equipment and the
venting system shall include:
1. Detailed instructions for the installation of the venting system
design or the venting system components; and
2. A complete parts list for the venting system design or venting
system.
(d) MANUFACTURER REQUIREMENTS - GAS EQUIPMENT
VENTING SYSTEMNOT PROVIDED. When the manufac-
turer of a Product Approved side wall horizontally vented gas
fueled equipment does not provide the parts for venting the
fuel gases, but identies "special venting systems", the following requirements shall be satised by the manufacturer:
1. The identication of each "special venting system" shall
include either the listing of the website, phone number or
manufacturer's address where the venting system installation
instructions can be obtained; and
2. The "special venting systems" shall be Product Approved
by the Board, and the instructions provided with that system
shall include a parts list and detailed installation instructions.
(e) A copy of all installation instructions for the Product
Approved side wall horizontally vented gas fueled equipment, and all the venting instructions, parts lists, and/or
design instructions for the venting system shall remain
with the appliance or equipment at the completion of the
installation.
Manufacturers' websites where venting system installation
instructions may be obtained is located on the Bradford
White website at: http://www.BradfordWhite.com.
2.3.4 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 (see Figure 3). The
opening on the end of the terminal must be at least 12"
(30cm) 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" (30cm) below
the vent terminal.
2.4 Common Vent Test — Boilers
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.
Page 12
Bradford White Corp
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 and
other deciencies 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 appliance 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 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 draft hood relief opening
after 5 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 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 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 in Part II of
the National Fuel Gas Code, ANSI Z223.1/NFPA
54 and/or CSA B149.1, Installation Codes.
OUTDOOR VENT OUTDOOR
UNIT SIZE TERMINAL COMBUSTION
AIR TERMINAL
500 20254703 D2007900
750 20254705 D2007900
1000 20254705 D2008000
1250 D2007700 D2008000
1500 D2007700 D2008000
1750 D2007800 D2008000
2000 D2007800 D2008200
Table 6. Vent Terminals for Outdoor Units.
2.5 Vent Terminals for Outdoor Units
For outdoor applications, the vent and combustion
air openings must be covered with proper terminals to
prevent rain, snow and other objects from falling into the
Brute Deluxe.
If local codes allow, outdoor installations may
use 1' of appropriately sized galvanized single wall or
B-Vent and a rain cap for exhaust vent termination in
the default conguration (venting out of the top). Note
that some local codes may require a higher vertical
vent height, extending above any perimeter fencing,
etc. In installations where the appearance of the vent is
objectionable, the low prole vent terminals in Table 6
may be used.
Combustion air inlets consist of appropriately sized
galvanized pipe and elbows to allow the open end to face
SIZE DISTANCE FROM GAS METER
AND OR LAST STAGE REGULATOR
GAS TYPE 0-100' 100-200' 200-300'
500 natural 1½" 2" 2"
500 propane 1" 1½" 1½"
750 natural 2" 2" 2½"
750 propane 1½" 1½" 2"
1000 natural 2" 2½" 3"
1000 propane 1½" 2" 2½"
1250 natural 2½" 2½" 3"
1250 propane 2" 2" 2½"
1500 natural 2½" 3" 3"
1500 propane 2" 2½" 2½"
1750 natural 2½" 3" 3"
1750 propane 2" 2½" 2½"
2000 natural 3" 3" 3½"
2000 propane 2½" 2½" 3"
Metric Equivalent
SIZE DISTANCE FROM GAS METER
AND OR LAST STAGE REGULATOR
GAS TYPE 0-31m 31-61m 61-91m
500 natural 3.8cm 5.1cm 5.1cm
500 propane 2.5cm 3.8cm 3.8cm
750 natural 5.1cm 5.1cm 6.4cm
750 propane 3.8cm 3.8cm 5.1cm
1000 natural 5.1cm 6.4cm 7.6cm
1000 propane 3.8cm 5.1cm 6.4cm
1250 natural 6.4cm 6.4cm 7.6cm
1250 propane 5.1cm 5.1cm 6.4cm
1500 natural 6.4cm 7.6cm 7.6cm
1500 propane 5.1cm 6.4cm 6.4cm
1750 natural 6.4cm 7.6cm 7.6cm
1750 propane 5.1cm 6.4cm 6.4cm
2000 natural 7.6cm 7.6cm 8.9cm
2000 propane 6.4cm 6.4cm 7.6cm
NOTES: 1. These gures are based on 1/2" (0.12kPa) water column
pressure drop.
2. Check supply pressure and local code requirements
before proceeding with work.
3. Pipe ttings must be considered when determining gas
pipe sizing.
Table 7. Gas Piping Sizes.
Loading...