Biasi B3 Specification sheet

Page 1
WHAT TO DO IF YOU SMELL GAS
· Do not try to light any appliance
· Do not touch any electric switch; do not use any phone in your
building
· Immediately call your gas supplier from a neighbor’s phone.
Follow the gas supplier’s instructions.
· If you can not reach your gas supplier call the fire department
Installation and service must be performed by a qualified licensed
installer, service agency or the gas supplier.
Please Read Instructions Carefully
Save for Future Reference
Manufactured by:
Biasi S.p.A.
Verona, Italy
Distributed By:
QHT, INC.
QUINCY HYDRONIC TECHNOLOGY, INC.
3560 LAFAYETTE ROAD
BLDG. 2, UNIT A
PORTSMOUTH, NH 03801
PHONE: [phone]
FAX: [phone]
REV. 111011
If the information in this manual is not followed exactly, a fire or
explosion may result causing property damage, personal injury or loss of
life.
WARNING
DANGER
B10 SERIES BOILER
B3-B9
Boiler Manual And Installation
Instructions for Atmospheric Venting

Page 2
Dear Customer:
Thank you for buying a B10 Series Boiler from Quincy Hydronic Technology.
The B10 Series Boiler is a cast iron, oil or gas fired hot water boiler, using the famous
BIASI B10 (3-pass) design. The boiler is light, compact, simple, rugged and engineered
for maximum home heating efficiency. The B10 series boiler is Energy Star listed with
AFUE efficiencies up to 87% on oil and 85.5% on direct vent gas.
We realize that it is not possible to answer all questions about the B10 series boiler
system in this manual. Reading this installation manual does not make the reader an
expert in all aspects of installation and operation, and does not replace the need for a
qualified licensed heating contractor. We urge you to contact your installing
contractor ,dealer, or us if you have any question about any aspect of your boiler's
performance. Our main concern is that you are satisfied with the B10 installation and its
performance. We require your contractor complete efficiency tests using appropriate
instruments and record the burner performance on page 29.
The controls and accessories listed in this manual are intended to serve as guidelines
rather than specific recommendations. We realize other makes and models of the
specified devices are available and can be used as successfully as those we specify.
The installing contractor is the best judge of a system's specific requirements, as well as
the local availability of certain makes and models of controls and accessories. The
preceding does not apply, however, to the equipment that comes with every boiler, such
as the overheat control (L4006A, 7248, Hydrostat, or Aquasmart) and pressure relief
valve. The installation of the specific devices supplied with every boiler is
absolutely necessary to the safe operation of the boiler and protection of the
heating system.
All BIASI Boiler blocks are built in accordance with the ASME boiler and pressure
vessel code, and bear the "H" stamp. The entire range of applications for the B10
Series Boiler have been tested to CAN/CGA B149 and are ULC compliant.
This B10 Boiler block has a limited lifetime warranty (refer to back of manual), a copy of
which is provided with the boiler. Please be sure to return the warranty registration card
as the warranty will be void without your boiler's serial number (located on the plate on
the front leg of the boiler), date of installation and the name of your installer.
Thank you for purchasing our B10 Series Boiler. If you have questions or comments,
please don't hesitate to contact us immediately. Our goal is 100% customer satisfaction.
Sincerely,
JimQuincy
President
Quincy Hydronic Technology Inc.

Page 3
TABLE OF CONTENTS
QHT BIASI B10 Series Section Page
Important Information &
Warnings 4,5,6
General Information 1 7
Boiler Block Assembly &
Explosion Diagram 2 8
Boiler Location 3 9
Installation of Boiler
Trim Kit Components 4 10,11
Piping the Boiler 5 12
Intake Venting 6 13,14
Exhaust Venting 7 15
Common Exhaust Venting 7.1 16
Gas Venting 7.2 16
Burner Setup 8 17
Oil 8.1 18
Gas 8.2 19
Gas Line Piping 9 20
Boiler Jacket Assembly 10 21
Wiring 11 22-27
Oil Diagrams 11.1 23-25
Gas Diagrams 11.2 26-27
Commissioning the Boiler 12 28
Maintenance 13 28
Installer Notes 14 29
Warranty Inside back cover
This installation manual is for the basic installation of a B10 series boiler for
atmospheric venting of oil and gas. If you are installing a direct vent
system, please refer to its addendum to be used in conjunction with this
manual to insure the proper installation of the boiler system.

Page 4
IMPORTANT INFORMATION
Please read this page carefully.
 ALL BOILERS MUST BE INSTALLED IN ACCORDANCE WITH NATIONAL, STATE AND LOCAL
PLUMBING, HEATING AND ELECTRICAL CODES AND ORDINANCES, AS WELL AS THE
REGULATIONS OF THE SERVING ELECTRICAL, WATER AND GAS UTILITIES.
 All systems should be designed by competent licensed heating contractors,
and only persons knowledgeable in the layout and installation of heating
systems should attempt the installation of the B10 boiler. It is the
responsibility of the installing contractor to see that all controls are correctly
installed and operating properly when the installation is completed.
 Do not burn volatile garbage, gasoline, naphtha or other flammable liquids
other than No. 2 fuel oil. All flammable liquids (especially gasoline), chemicals,
rags, paper, wood scraps, debris, etc., should be kept away from the boiler at
all times. Keep the boiler area clean and free of all fire hazards.
 Please read the literature and warranties supplied by the manufacturers of the
various accessory equipment. This equipment is warranted by the respective
manufacturers, not by Quincy Hydronic Technology, Inc. Each piece of
equipment must be installed and used according to the recommendations of
the manufacturer.
Codes and Regulations:
Installation of the boiler, burner, oil tank and related equipment must conform to
national, state and local regulating agencies and codes applicable to the installation of
the equipment. In the absence of local requirements, the following codes apply:
A. NFPA - #31 Installation of Oil Burning Equipment
B. NFPA - #70 National Electric Code
C. NFPA - #211 Chimneys and Vents
D. ANSI - #Z223.1 National Fuel Gas Code
E. ANSI - Domestic Gas Conversion Burner
F. CAN/CGA - B149 Installation Codes
G. ANSI - CSD-1
H. CSA -C22.1 Canadian Electrical Code, Part1
The above codes are available from:
National Fire Protection Association
(NFPA)
Battery March Park
Quincy, MA 02269
http://www.nfpa.org
CSA International
8501 East Pleasant Valley Road
Cleveland, OH 44134
http://www.csa-international.org

Page 5
Any appliance that burns natural gas, propane gas, fuel oil, or coal is capable of
producing carbon monoxide (CO). Carbon monoxide (CO) is a gas which is
odorless, colorless and tasteless but is very toxic. CO is lighter than air and thus
may travel throughout the building.
BRIEF EXPOSURE TO HIGH CONCENTRATIONS OF CO, OR
PROLONGED EXPOSURE TO LESSER AMOUNTS OF CO MAY
RESULT IN CARBON MONOXIDE POISONING. EXPOSURE CAN
BE FATAL AND EXPOSURE TO HIGH CONCENTRATIONS MAY
RESULT IN THE SUDDEN ONSET OF SYMPTOMS INCLUDING
UNCONSCIOUSNESS.
Symptoms of CO poisoning include the following:
dizziness vision problems shortness of breath
headache loss of muscle control unclear thinking
nausea weakness unconsciousness
The symptoms of CO poisoning are often confused with those of influenza, and the
highest incidence of poisoning occurs at the onset of cold weather or during flu
season. A victim may not experience any symptoms, only one symptom, or a few
symptoms. Suspect the presence of carbon monoxide if symptoms tend to
disappear when you leave your home.
The following signs may indicate the presence of carbon monoxide:
IF ANY OF THE SYMPTOMS OCCUR, OR IF ANY OF THE SIGNS OF CARBON
MONOXIDE ARE PRESENT,VACATE THE PREMISES IMMEDIATELY AND
CONTACT A QUALIFIED HEATING SERVICE COMPANY, THE GAS COMPANY
OR THE FIRE DEPARTMENT.
ONLY QUALIFIED, LICENSED SERVICE CONTRACTORS SHOULD PERFORM
WORK ON YOUR B10 BOILER.
WARNING
 Hot gasses from appliance, venting
system pipes or chimney, escaping
into the living space.
 Flames coming out around the appli-
ance.
 Yellow colored flames in the
appliance.
 Stale or smelly air.
 The presence of soot or carbon in or
around the appliance.
 Very high unexplained humidity
inside the building.

Page 6
TO START UP THE APPLIANCE
1. STOP! Read the safety information on the side of the boiler. DO NOT START
THE BOILER UNLESS ALL CLEANOUT DOORS ARE SECURED AND
SEALED. (Skip to step 9 for oil burning boilers)
2. Set thermostat to lowest setting
3. Turn off all electric power to the appliance
4. Do not attempt to light the burner by hand
5. Turn the manual shut off on the combination gas
valve clockwise to the off position.
6. Wait five minutes to clear out any gas.
Then smell for gas, including near the floor.
If you smell gas, STOP!
 Do not try to light any appliance
 Do not touch any electric switch; do not use any phone in your building
 Immediately call your gas supplier from a neighbor’s phone. Follow the
gas supplier’s instructions.
 If you can not reach your gas supplier call the fire department
7. If you don’t smell gas, go to the next step.
8. Return the manual valve on the combination gas valve to the on position by
reversing step “5”.
9. Turn on all electric power to the appliance.
10.Set thermostat to the desired setting.
11.If the burner fails to light you may press the reset button once. If the appliance
will not operate, follow the instructions “To Turn Off Gas To Appliance” and call
your service technician or gas supplier. DO NOT ATTEMPT TO START THE
BURNER WHEN EXCESS GAS HAS ACCUMULATED, WHEN THE UNIT IS
FULL OF VAPOR, OR WHEN THE COMBUSTION CHAMBER IS VERY HOT.
NOTE: ALWAYS KEEP THE MANUAL FUEL SUPPLY VALVE SHUT OFF IF THE
BURNER IS SHUT DOWN FOR AN EXTENDED PERIOD OF TIME.
TO TURN OFF GAS APPLIANCE
1. Set the thermostat to the lowest setting.
2. Turn off electric power to the appliance if service is to be performed.
3. Turn the gas control valve to the off position.
Homeowner Information for Gas

Page 7
The B10 series boilers are wet base design, sectional, cast-iron boilers for
forced hot water heating systems. The boilers are shipped pre-assembled from the
factory in lengths from three to nine sections. They are designed for firing with oil or
gas power burners, which are packed separately along with the jacket and controls
for shipping purposes.
When the boiler is received, check the contents to ensure that there is no
shortage or damage to any part of the boiler system. With every boiler you should
receive a boiler block, jacket, trim kit and a burner (oil or gas).
Trim Kit Components
USE ONLY THE UL LISTED BOILER COMPONENTS AND
UL/CSA LISTED OIL OR GAS BURNER COMPONENTS SUPPLIED WITH
THE VEGA B10 BOILER SYSTEM.
1 - Honeywell L4006A, 7248,
Hydrostat or Aquasmart high
limit
1 – Immersion well
1 – ¾” X 3” Nipple
1 – Combo pressure/temp gauge
1 – 30 PSI Pressure relief valve
1 – ¾” Boiler drain
1 – Cera-fiber Pad for floor of
combustion chamber
2 – ¾” Plugs
1 – ¼” X ½” Bushing
1 – ¾” 90° Elbow
1 - Double acting barometric
damper with manual reset
spill switch
(Gas systems only)
1. General Information
All dimensions are in inches. L 18 3/4
29 3/4
Boiler
Model Heating Capacity Flue Gas Resistance Oil AFUE Efficiency Water Content Length (L) Weight
MBH GPH- Oil MBH- Gas OIL GAS IN. W.C. % Chim D.V. GALS. IN. LBS
B-3 67 0.55 80 58 60 0.03 86.6 84.4 85.5 3.5 15.5 249
B-4 110 0.90 115 96 84 0.04 86.5 84.0 85.5 4.7 19.5 308
B-5 124 1.00 140 108 103 0.06 87.2 83.8 85 5.7 23.5 367
B-6 153 1.25 175 133 129 0.07 86.7 83.6 85.5 6.7 27.5 427
B-7 185 1.50 215 161 157 0.08 86.8 83.0 NA 7.7 31.5 486
B-8 211 1.80 257 183 189 0.10 86.8 83.6 NA 8.8 35.5 546
B-9 257 2.10 298 223 219 0.12 86.5 83.5 9.9 39.5 606
Maximum Water Working Pressure 58 psi Maximum Relief Valve is 30 psi at 500 MBH
Gross Input Burner
Capacity Net Output Gas AFUE Efficiency

Page 8
All B10 Series Boilers are shipped from the factory in assembled boiler
blocks. If, however, the block needs to be split into sections for ease of delivery,
please read the following:
To assemble split blocks, move sections into parallel and facing each other.
Sections may be slid along boards placed underneath the sections. Inspect nipple
ports for damage or burrs. Remove any burrs by sanding the port very lightly. Wipe
the push nipples and nipple ports with a clean cloth. Apply a film of nipple compound
to both the nipple and port. Install the nipple in the port and then seal by tapping with
a hammer cushioned with a block of wood. Apply section sealant to grooves in one
section only and slide sections together. Install the four draw rods and draw the
sections together evenly (measure with yardstick). Draw the sections together until
sections make iron-to-iron contact at a point around the top and bottom ports of each
section. DO NOT OVER TIGHTEN DRAW RODS
NOTE: When cutting off excess length of draw rods, allow enough length to install
boiler jacket on the draw rods.
2. Boiler Block Assembly
Boiler Components & Parts
B 10 Series
Boiler Block Assembly:
1 Front Section
2 Rear Section
3 Intermediate Section
4 Steel Push Nipples
5 Tie Rod
6 Tie Rod Nut
7 Tie Rod Washer
8 3/4” X 1 1/4" Bushing
9 Bushing gasket
10 1/2" X 1 1/4" Bushing
11 Boiler Swing Door
12 Upper Cleanout Plate Insulation
13 Upper Cleanout Plate Gasket
14 Upper Cleanout Plate Backing
15 Burner Door Insulation
16 Door/Cleanout Stud (Qty 7)
17 Burner Door Gasket
18 3/4" Plug (Sight Hole)
19 Boiler Door Hinge (4 pieces)
20 Hinge Pin (Qty 6)
21 Boiler Body Hinge Bolts (Qty 2)
22 Door Hinge Mounting Bolts (Qty 2)
23 6“ Boiler Breeching
24 Upper Cleanout Plate

Page 9
If the boiler is to be installed in a "direct vent" configuration, please refer to the
B10 Direct Vent Addendum supplied with the Direct Vent Kit.
PROVISIONS FOR COMBUSTION AIR AND VENTILATION AIR MUST BE IN
ACCORDANCE WITH SECTION 5.3, “AIR FOR COMBUSTION AND
VENTILATION”, OF THE NATIONAL FUEL GAS CODE, ANSI Z223.1, OR
APPLICABLE PROVISIONS OF THE LOCAL BUILDING CODES. DO NOT
INSTALL THE BOILER UNTIL PROPER COMBUSTION AIR HAS BEEN
ARRANGED.
3. Boiler Location
The following are the minimum clearances to construction or combustible materials:
1. 9” from the top, sides,
and rear of the boiler.
2. 18” from the flue pipe in
any direction.
3. 24” from the front of the
boiler.
DANGER
The boiler must be located on a non-combustible floor. A smooth, level
concrete floor is recommended. Locate the boiler as close as possible to the
chimney. If the boiler is installed on combustible flooring, consult local authorities for
proper method of covering floor. The boiler must not be installed on carpeting.
Caution: Do not store or use flammable materials, chemicals or
flammable liquids, especially gasoline, in the vicinity of this heating
appliance.
WARNING
Boiler is certified as an indoor appliance. Do not install boiler outdoors or locate
where it will be exposed to freezing temperatures or in a unconditioned/unheated
space.
24”
FRONT
9” TOP
9”
SIDE 9”
REAR

Page 10
USE ONLY THE ULC LISTED BOILER COMPONENTS AND
UL/CSA LISTED OIL OR GAS BURNER COMPONENTS SUPPLIED WITH
THE B10 SERIES BOILER SYSTEM.
Please refer to the figure below for Barometric Damper location for either oil or
gas and to the next page for the proper location of the trim components.
4. Installation of Boiler Trim Components
NOTE: See Page 19 for
available gas burners in
North America
BIAS
Heat Wise
BAROMETRIC DAMPER
WITH MANUAL RESET
SPILL SWITCH
ALTERNATIVE
DAMPER LOCATION
BIASI B10
POWER GAS
BURNER
GAS COCK
DRIP LEG
UNION
GAS TRAIN
Trim Kit Components
1 - Honeywell L4006A, 7248,
Hydrostat or Aquasmart high
limit
1 – Combo pressure/temp gauge
1 – ¾” X 3” Nipple
1 – 30 PSI pressure relief valve
1 – ¾” Boiler drain
1 – Cera-fiber Pad for bottom of the
combustion chamber
1– ¼” X ½” Bushing
2 – ¾” Plugs
1 – ¾” 90° Elbow
1 – Immersion well
1- Double acting barometric
damper with manual reset spill
switch (Gas systems only)

Page 11
Ø1
2Pressure/Temperature Guage Tapping
Ø3
4Alternative Boiler Drain Tapping
Ø31
2Burner Blast Tube Orifice
111
2
27
41
2
1. Install high limit control in upper left or right rear tapping using 3/4” immersion
well. All tapings and joints should be sealed with piping compound. The L4006A
can be adjusted up to 220oF, and should be set to the desired temperature by
the installer. The differential is also adjustable between 5 and 30 degrees. It
should be set as close to 30 degrees as possible to prevent short cycling of the
boiler. If you are installing a 7248, Hydrostat, or Aquasmart screw the unit to
side panel of the boiler as close to the immersion well as possible using the tabs
on the aquastat. Run the sensor from behind the aquastat to the immersion well
and fix it according to manufacturer’s instructions.
2. Install Pressure Relief Valve in opposite, upper rear tapping using 3” nipple and
3/4” elbow
3. Install 3/4” boiler drain in lower left or right rear tapping, or lower front tapping.
4. Install makeup water line in opposite lower rear tapping, and the other plug in
lower front tapping of the boiler.
5. Install combination pressure/temperature gauge and 1/2” x 1/4” bushing in upper
front tapping. The gauge must be tightened using a wrench and not your
hand.
6. Install burner mounting hardware in the four tapings on the front of the boiler
door.
4. Installation of Boiler Trim Components Cont.
Boiler Tapping Diagram:
3X 27
2X 41
2
22
Ø6 Exhaust Breeching
33
4
Ø11
2Supply Tapping Ø3
4PRV or Hi Limit Control Tapping
Ø3
4Hi Limit Control or PRV Tapping
Ø3
4Alternative Boiler Drain Tapping
Ø11
2Return Tapping
Ø3
4Boiler Drain Tapping

Page 12
SAFETY RELIEF VALVE
1. The safety relief valve should be piped into one of the two upper tapings in the
rear of the boiler
2. The relief valve should be installed using the hardware supplied in the trim kit
without valving between the PRV and the boiler.
3. Pipe the discharge for the safety relief valve with copper tube to within four
inches from the floor to prevent injury in the event or a pressure release. Provide
piping that is the same size as the safety relief valve outlet.
All piping must conform to state and local codes. Page 11 shows the location
and size of the boiler tappings. It is recommended to install unions and gate valves
at the inlet and outlet of the boiler, so it may be readily isolated for service.
For Canadian installations, a low water cut off is required if the boiler is
installed above the level of radiation. Even if the boiler is installed below the level of
radiation it is strongly recommended that a low water cut off be installed. Install
manual and/or automatic air venting devices at the high points in the system to
eliminate trapped air. The weight of all piping should be supported by suitable
hangers and floor stands, not by the boiler’s purging/expansion station. Clearance
for hot water pipes are 1 inch to combustibles. The make-up water line must be
piped into the boiler and be fitted with a backflow preventer and a pressure
reducing valve to reduce line pressure to 10 to 15 psi.
In the case of a gas installation, the boiler should be installed such that the
gas ignition system components are protected from water (dripping, spraying, etc.)
during appliance operation and service (circulator replacement, condensate trap,
control replacement, etc.).
If the boiler is to be used in conjunction with a chilled water system, it must be
piped with the appropriate valves to ensure the chilled medium does not enter the
boiler. If the boiler is connected to heating coils in an air handling system, where the
coils could be exposed to cold air circulation, provisions for freeze protection control
must be installed. The boiler must have flow control valves or other automatic
means to prevent gravity circulation of the boiler water during the cooling cycle.
NOTE: If the heating system is to be filled with antifreeze, use only formulations
expressly made for hydronic heating systems (such as propylene glycol). Do not
use automotive types of antifreeze (ethylene glycol). Use of antifreeze will alter
system output and characteristics. Consult a factory representative for details or
assistance.
5. Piping the Boiler

Page 13
6. Intake Venting
1. Be certain adequate air is available for combustion and ventilation.
a.) Boiler located in unconfined space:
Installation in large areas, such as basements, can usually be assumed to
provide sufficient air.
b.) Boiler located in confined space : (See Figure A. on page 14)
If all air for combustion and ventilation is to come from within the building:
Two (2) openings shall be provided with one (1) opening commencing within
12 inches of the ceiling and one (1) opening commencing within 12 inches of
the floor of the enclosure. These openings shall not be located closer than 3
inches from either the top or bottom of the enclosure and shall be open to
areas connecting freely with the outdoors. The area of each opening shall
not be less than one square inch per 1000 BTU/HR. of total input rating of all
appliances within the enclosure; with a minimum of 100 square inches for
each opening.
If all the air for combustion and ventilation is to come from outside the
building: Two (2) openings shall be provided with one opening commencing
within 12 inches of the top and an opening commencing within 12 inches of
the bottom of the enclosure. These openings shall not be located closer than
3 inches from either the top or bottom of the enclosure, and shall connect
directly or by ducts too the outdoors. The area of each opening shall be
equal to one square inch per 4000 BTU/HR of total input rating. If ducts are
used to convey the air, vertical ducts require areas of one square inch per
4000 BTU/HR. Horizontal ducts require one square inch per 2000 BTU/HR.
Ducts shall have the same cross sectional area as the full area of the louver
openings.
The upper opening is essential for maintenance of proper air
circulation with the boiler and to maintain proper control temperatures. When
a duct is used for ventilation, check for louver free net area and correct for
screen resistance to ensure that the sufficient ventilation area has been
satisfied. DO NOT INSTALL THE BOILER UNTIL PROPER COMBUSTION
AIR HAS BEEN ARRANGED.

Page 14
c.) Boiler located in a room under negative pressure:
If the boiler is to be installed within a home where the operation of exhaust
fans, attic fans, kitchen ventilation systems, clothes dryers or fireplaces may
create severe negative vent pressures causing unsatisfactory combustion and
venting, special provisions should be made for additional make-up air to
supply the other air requirements. If building is of tight construction,
combustion air requirements may not be met and combustion air ducts from
outside may be necessary. Please refer to NFPA No. 31.
Tight Construction (as defined by ANSI Z223.1):
1. Walls and ceilings exposed to the outside atmosphere have a
continuous water vapor retarder with a rating of 1 perm or less with
openings sealed with gaskets, etc..
2. Weather-stripping has been added on open able windows and doors,
and caulking or sealants are applied to areas such as: joints around
windows and door frames, between sole plates and floors, between wall
ceiling joints, between wall panels, at penetrations for plumbing,
electrical, and gas lines, and in other openings.
If the building is of tight construction, air openings must be provided from the
outside, with appropriate sizing depending on amount of BTU/HR as shown in
Figure A. The boiler room must never be under a negative pressure, even if
the appliance is installed as direct vent. Always provide air openings sized
not only to the dimensions required for the firing rate of all appliances, but
also to handle the air movement rate of the exhaust fans or air movers using
air from the building or boiler room.
6. Intake Venting Cont.
Figure A

Page 15
The B10 boiler is a high efficiency unit that requires proper venting. The boiler must
be vented to the outdoors by means of a tile lined masonry or a approved pre-fabricated
chimney of the size and height recommended by the manufacturer or by a listed "power
venting" unit which provides draft by mechanical means. In many installations, particularly
older interior and most exterior chimneys, a corrosion resistant liner should be installed and
may be required by code. Please consult the liner manufacturer for the appropriate chimney
liner.
The flue-gas exit of the chimney must be located at least 24 inches above any part of
the building structure within 4 feet of the chimney. Be sure the chimney and smoke pipe
won't become obstructed by squirrels, bird nests, soot buildup, chimney liner deterioration,
etc.. If using a "power venter" system, it is suggested that it should be installed on the
leeward side of the house. (Please consult with the manufacturer of "power venter" for
requirements concerning clearances from combustibles and distances from doors and
windows.) The "venter" must be installed by a licensed burner mechanic and done in
accordance with local codes. This is a very low stack temperature boiler (350F gross temp.)
so caution should be used when connecting to an outside built chimney. Should you have
concern that the flue gases could condense, you should consider lining the chimney or
using a listed, "power venting" or the QHT direct vent system. If "power venting" is used to
discharge flue gases, then the power vent unit should be equipped with a postpurge control
such as a delay-off, timing control to prevent problems with fogging and nozzle post drip. If
the boiler is installed as a direct vent unit, it must be installed using the DVH-5 direct vent kit
supplied by QHT Inc.
The exhaust pipe connection from the boiler to the chimney should be as short as
possible, with a minimum number of elbows. The vent pipe must have a vertical rise of at
least 1/4 inch per foot of horizontal run. The vent pipe must be of the same diameter as the
flue outlet on the boiler. The chimney connector should have a minimum thickness of 26
gauge, corrosion resistant (galvanized) steel, and be assembled with a minimum of three (3)
sheet-metal screws in each joint. In some one and two story houses, a barometric draft
control is not required as the B-10 is designed to be pressure-fired. However in high draft
situations which exceed the flue gas resistance through the boiler, a barometric draft control
is recommended. The over fire draft should be positive and between 0 and .06 inches of
water column. The draft at the breech should be enough to overcome the resistance
through the boiler.
7. Exhaust Venting

Page 16
Common vent exhaust:
If this boiler is replacing one which was part of a common venting system, it is
likely that the vent is to large to vent the appliances still attached to it. To prevent
this, at the time of removal, the following steps shall be followed with each appliance
remaining connected to the common venting system. Place each appliance 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
deficiencies which could cause an unsafe condition.
3. Insofar as practical, close all building doors and windows and all doors between
the space in which the appliance remaining connected to the common venting
system is located and other spaces of the building . Turn on any appliance not
connected to the common vent system. Turn on all exhaust fans except for
summer exhaust fans. Close the fireplace damper if applicable.
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 barometric damper opening after 5 minutes of main
burner operation. Use the flame of a match or candle, or smoke from a
cigarette, cigar or pipe.
6. After it has been determined that each appliance remaining connected to the
common venting system properly vents when tested as outlined above, return
the doors, windows, exhaust fans, fireplace dampers and any other gas-burning
appliance to their previous condition 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 and/or
CAN/CGA B149, 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 11 of the
National Fuel Gas Code, ANSI Z223.1, and/or CAN/CGA B149, Installation
Codes.
7.1 Common Exhaust Venting
For boilers connected to gas vents or chimneys, vent installations shall be in
accordance with part 7, Venting of Equipment, of the National Fuel Gas Code, ANSI
Z223.1 or Section 7, Venting Systems and Air Supply for Appliances, of the CAN/
CGA B149, Installation Codes, or applicable provisions of the local building codes.
Vent connectors serving appliances vented by natural draft shall not be
connected into any portion of mechanical draft systems operating under positive
pressure.
7.2 Gas Venting

Page 17
Good, reliable operation with a minimum of service, starts with attention to the small
details:
Oil:
1. Setting the nozzle position and electrodes to the manufactures specs
using the manufacturer's gauges.
2. Installing a quality micron filter at the burner.
3. Making careful/tight flare connections, without couplings, on oil suction
line.
4. Checking fuel pump pressure is set to specs on following page.
5. Checking draft at the breeching to insure it is adequate to overcome flue
gas resistance. (-.02 to –.04 in. w.c.)
6. Setting the air band properly with well maintained instruments. A good
target is 11% to 12.5% of (CO2) or 6.5% to 3.8% of (O2).
To ensure proper burner setup, gauges should be used to check things such as the
pump pressure, CO2levels, etc…
Gas:
1. Checking the electrode, orifice size, and flame rod settings against
manufacturer’s specs to insure proper operation.
2. Installing properly sized gas piping according to BTU input required and
length of gas line run.
3. Making sure there is proper manifold pressure before and after the
gas valve using a calibrated manometer.
4. Checking draft at the breeching to insure it is adequate to overcome flue
gas resistance. (-.02 to –.04 in. w.c.)
5. Setting the air band properly with well maintained instruments. A good
target is 9.5% to 10.5% of (CO2) or 5% to 2.5% of (O2) for natural gas, or
10.0% to 12.0% of (CO2) or 5% to 2.5% of (O2) for LP gas.
8. Burner Setup
CUT INSULATION IN BLAST
TUBE OPENING TO 4.25"
TO ACCEPT CARLIN BLAST
TUBE.
TRIM INSULATION IN
BOILER DOOR OPENING
TO 4.25” FOR BECKETT AFG
AND CARLIN EZ BLAST
TUBE.
IMPORTANT

Page 18
BURNER MANUFACTURER: Beckett NX
Boiler Model B-3 B-4 B-5 B-6
Burner Model NEC-1102* NEC-1101* NEC-1101* NEC-1103*
Firing Rate 0.55 0.90 1.00 1.20
Insertion Depth 3.50" 6.00" 6.00" 6.00"
Nozzle 0.50 X 60 0.65 X 60 0.75 X 60 0.90 X 60
Spray Pattern hollow solid solid W
Pump Pressure 180 psi 180 psi 180 psi 180 psi
Head Type NX70LC NX90LB NX90LB NX90LB
Head Position 0.75 2.75 3.75 3.75
BURNER MANUFACTURER: Beckett AFG
Boiler Model B-3 B-4 B-5 B-6 B-7
Burner Model NEC 1301 NEC 1302 NEC 1303 NEC 1304 NEC 1304
Firing Rate 0.55 0.80 1.00 1.25 1.50
Insertion Depth 2.75" 2.75" 6.0" 3.5" 3.5"
Nozzle 0.50 x 60 0.75 X 60 0.75 X 60 1.10 X 60 1.35 X 60
Spray Pattern Solid Solid Solid Solid Solid
Pump Pressure 180 psi 150 psi 175 psi 125 psi 125 psi
Head Type L1 L1 V1 V1 V1/2
Air Shutter 8.0 10.0 7.0 10.0 10.0
Air Band 0.0 0.0 0.0 1.0 3.0
Riello
Boiler Model B-3 B-4 B-5 B-6 B-7 B-8 B-9
Burner Model F-3 F-3 F-5 F-5 F-5 F-10 F-10
Firing Rate 0.55 0.8 1 1.25 1.5 1.8 2.1
Insertion Depth 3.0" 3.0" 3.0" 3.0" 3.0" 3.0" 3.0"
Nozzle 0.50 X 70 0.65 X 60 0.85 X 60 1.00 X60 1.25 X 60 1.50 X 60 1.75 X 60
Spray Pattern W W W W W B B
Pump Pressure 145 PSI 145 PSI 145 PSI 145 PSI 145 PSI 145 PSI 145 PSI
Turbulator 1 2 2 3 4 2 3
Air Gate 2-2.7 3.5-4.5 2.8-.3.4 4.0-4.25 4.5-6 2.8-3.4 3-4.1
Carlin
Boiler Model B-4 B-5 B-6
Burner Model EZ-1 HP EZ-1 HP EZ-1 HP
Firing Rate 0.55 1 1.2
Insertion Depth 3.0" 3.0" 3.0"
Nozzle .65 X 70 .85 X 60 1.00 X 60
Spray Pattern A A B
Pump Pressure 150 PSI 150 PSI 150 PSI
Head Bar .60/.65 .85/1.00 .85/1.00
Air Gate 0.65 0.85 1.00
BURNER MANUFACTURER
BURNER MANUFACTURER
This page is only for boilers using an oil burner. If a gas burner is being used,
please refer to page 19 for the proper setup of the burner and gas lines.
8.1 Oil Burner Setup
Only burners in the shaded
chart are approved for use
in Canada.

Page 19
To determine how much gas is coming into the
burner, or to set the gas meter correctly, the
following formula can be used.
The chart to the right can be used to determine
the flow rate depending upon the time per
revolution and the size of the gas meter dial.
Ft3/hr = [3600/(sec. Per rev.)]*(Size of gas meter)
Size of Gas Meter Dial
(Cubic Foot)
0.5 1 2
20 90 180 360
25 72 144 288
30 60 120 240
35 51 103 206
40 45 90 180
45 40 80 160
50 36 72 144
55 33 65 131
60 30 60 120
Seconds per
Revolution
This page is only for boilers using a gas burner. If an oil burner is being used,
please refer to page 18 for the proper setup of the burner.
Riello Natural Gas Propane
Boiler Model Burner Model Input
(MBH) Man. Pres. (W.C.) Head Setting Air Gate Man. Pres. (W.C.) Head Setting Air Gate
B-4 R200 110 1.06” 2.2 1 1.32” 2 1
B-5 R200 140 1.20” 2.8 2 1.76” 2.7 2
B-6 R200 175 1.46” 2.8 3 2.34” 2.9 3
B-7 R400 207 1.22” 2 0 1.48” 2 0
B-8 R400 248 1.26” 2.3 1 1.64” 2.3 1
Natural Gas Propane
Boiler
Model Burner Model Input (MBH) Man. Pres. (W.C.) Head Setting Air Gate Orifice Man. Pres. (W.C.) Head Setting Air Gate Orifice
B-3 SU-2A 80 3.5” 18 closed 3/16 2.0” 22 closed 3/16
B-4 SU-2A 115 3.5” 12 3 7/32 2.3” 12 3 7/32
B-5 SU-2A 140 3.2” 15 8.3 9/32 1.8” 15 7.75 9/32
B-6 SU-2A 175 3.5” 10 13.5 21/64 2.3” 10 13.5 21/64
B-7 SU-2A 215 3.3” 3 15 27/64 2.0” 3 15 27/64
B-8 SU-3 272 1.7” 1 3.25 No orifice 1.3” 1 3.25 No orifice
B-9 SU-3 308 2.3” 1 6.75 No orifice 1.7” 2 6.5 No orifice
Heat Wise
8.2 Gas Burner Setup
Note: Consult burner manufacturers literature for gas manifold diagram and controls.
Carlin Natural Gas Propane
Boiler Model Burner Model Input
(MBH) Man. Pres. (W.C.) Orifice Air Gate Man. Pres. (W.C.) Orifice Air Gate
B-4 EZ-GAS 110 3.50” #1 (.228”) 40% 3.50” #15 (.180”) 48%
B-5 EZ-GAS 140 3.50” Let F (.257”) 20% 3.50” #5 (.206”) 20%
B-6 EZ-GAS 175 3.50” 5/16” (.312”) 36% 3.50” 1/4” (.250”) 41%
B-3 EZ-GAS 80 3.50” #11 (.191”) 30% 3.50” #25 (.150”) 30%
Burners in the shaded chart
are discontinued. Specs are
shown for reference only.

Page 20
Gas supply piping is to be sized and installed properly in order to provide a
supply of gas sufficient to meet the maximum demand without undue loss of
pressure between the meter and the boiler. Consult with the National Fuel Gas
Code ANSI Z223.1 for proper sizing of gas piping for various lengths and diameters.
Locate a drop pipe adjacent to, but not in front of the boiler. Locate a tee in the
drop pipe at the same elevation as the gas inlet connection to the boiler. Extend the
drop line with a nipple towards the floor and cap to form a sediment trap. Install a
shut off valve before the tee with sediment trap and a union after the tee before the
combination gas valve.
When installing the boiler, make sure a pipe compound resistant to the action of
liquefied petroleum is used. Check piping for leaks. Always check leaks with a water
and soap solution. DO NOT USE A FLAME FOR CHECKING GAS LEAKS
The boiler and its individual shut-off valve must be disconnected from the gas
supply piping during any pressure testing of that piping at test pressures in excess of
1/2 psi.
To check for gas
leaks, use a gas detec-
tor or apply a soap
solution to the joints.
DO NOT USE AN
OPEN FLAME!
Direction of flow
Manual Shutoff Valve
Height of shutoff valve above ground
level to conform to local codes, if any.
Note: Massachusetts state code requires
gas shutoff to be a tee handled gas cock.
Pressure Gauge Port
(1/8” NPT plugged)
1” X 1” X 3/4” Tee Male Union 3/4” NPT
Burner Gas Train
Pipe Cap
3” MINIMUM
9. Gas Line Piping
INSTALLATION OF SEDIMENT TRAP AND BURNER SUPPLY