QHT BIASI B3 B9 User Manual

B10 SERIES BOILER  
B3-B9  
Boiler Manual And Installation  
Instructions for Atmospheric Venting  
Please Read Instructions Carefully  
Save for Future Reference  
WARNING  
If the information in this manual is not followed exactly, a fire or  
explosion may result causing property damage, personal injury or loss of  
life.  
DANGER  
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 installer,  
service agency or the gas supplier.  
Manufactured by:  
Biasi S.p.A.  
Verona, Italy  
Distributed By:  
QHT  
QUINCY HYDRONIC TECHNOLOGIES, INC.  
80 ROCHESTER AVE. SUITE #12  
PORTSMOUTH, NH 03801  
PHONE: 603-334-6400  
FAX: 603-334-6401  
Page 1  
REV. H  
TABLE OF CONTENTS  
Section  
QHT BIASI B10 Series  
Page  
4,5,6  
Important Information &  
Warnings  
General Information  
1
7
Boiler Block Assembly &  
Explosion Diagram  
2
3
8
9
Boiler Location  
Installation of Boiler  
Trim Kit Components  
4
10,11  
Piping the Boiler  
Intake Venting  
Exhaust Venting  
Common Exhaust Venting  
Blocked Flue Switch  
Gas Venting  
5
12  
6
13,14  
7
15  
7.1  
7.2  
7.3  
8
15,16  
16  
17  
Burner Setup  
Oil  
18  
8.1  
8.2  
9
19  
Gas  
20  
Gas Line Piping  
Boiler Jacket Assembly  
Wiring  
21  
10  
11  
11.1  
11.2  
12  
13  
14  
22  
23-24  
Oil Diagrams  
25-28  
Gas Diagrams  
Commissioning the Boiler  
Maintenance  
29-30  
31  
31  
Installer Notes  
Warranty  
32  
Inside Backcover  
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.  
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 contractors, and only persons  
knowledgeable in the layout and installation of heating systems should  
attempt the installation of any 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 Technologies, 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:  
The above codes are available from:  
National Fire Protection Association (NFPA) CSA International  
Battery March Park  
Quincy, MA 02269  
8501 East Pleasant Valley Road  
Cleveland, OH 44134  
Page 4  
WARNING  
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  
headache  
nausea  
vision problems  
loss of muscle control  
weakness  
shortness of breath  
unclear thinking  
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:  
Hot gasses from appliance, venting  
system pipes or chimney, escaping into  
the living space.  
Stale or smelly air.  
The presence of soot or carbon in or  
around the appliance.  
Flames coming out around the appli-  
ance.  
Yellow colored flames in the appliance.  
Very high unexplained humidity inside  
the building.  
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 B-10 BOILER.  
Page 5  
Homeowner Information for Gas  
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.  
.
Page 6  
1. General Information  
The BIASI B 10-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  
1 - Honeywell L4006A or 7248U  
aquastat  
1 – Immersion well  
2 – ¾” Plugs  
1 – ¼” X ½” Bushing  
1 – ¾” 90° Elbow  
1 – ¾” X 3” Nipple  
1 - Double acting barometric  
damper with manual reset  
spill switch  
1 – Combo pressure/temp gauge  
1 – 30 PSI Pressure relief valve  
1 – ¾” Boiler drain  
(Gas systems only)  
1 – Cera-fiber Pad for floor of  
combustion chamber  
USE ONLY THE UL LISTED BOILER COMPONENTS AND  
UL/CSA LISTED OIL OR GAS BURNER COMPONENTS SUPPLIED WITH  
THE VEGA B10 BOILER SYSTEM.  
All dimensions are in inches.  
L
18 3/4  
Page 7  
2. Boiler Block Assembly  
All QHT BIASI 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 scraping 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 hitting with  
a hammer cushioned with a block of wood. Apply section sealant to 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.  
Boiler Components & Parts  
BIASI B - Series  
Boiler Block Assembly:  
1
2
3
4
5
6
7
8
9
Front Section  
Rear Section  
Intermediate Section  
Steel Push Nipples  
Tie Rod  
Tie Rod Nut  
Tie Rod Washer  
1 1/2" X 3/4” Bushing  
Plug gasket  
10 1/2" X 1 1/2" Bushing  
11 Boiler Swing Door  
12 Front Door Upper Insulation  
13 Front Door Upper Gasket  
14 Front Door Upper Plate  
15 Front Door Lower Insulation  
16 Front Door Stud (Qty 7)  
17 Front Door Lower 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 inch Boiler Breeching  
24 Upper Front Fixed Door  
Page 8  
3. Boiler Location  
The following are the minimum clearance to construction or combustible materials:  
9”  
1. 9” from the top, sides,  
and rear of the boiler.  
2. 18” from the flue pipe in  
any direction.  
24”  
9”  
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 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.  
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.  
WARNING  
Boiler is certified as an indoor appliance. Do not install boiler outdoors or locate  
where it will be exposed to freezing temperatures  
Page 9  
4. Installation of Boiler Trim Components  
Trim Kit Components  
1 - Honeywell L4006A or 7248U  
1– ¼” X ½” Bushing  
aquastat  
2 – ¾” Plugs  
1 – Combo pressure/temp gauge  
1 – ¾” X 3” Nipple  
1 – ¾” 90° Elbow  
1 – Immersion well  
1 – 30 PSI pressure relief valve  
1 – ¾” Boiler drain  
1 – Cera-fiber Pad for floor of  
combustion chamber  
1- Double acting barometric  
damper with manual reset spill  
switch (Gas systems only)  
USE ONLY THE ULC LISTED BOILER COMPONENTS AND  
UL/CSA LISTED OIL OR GAS BURNER COMPONENTS SUPPLIED WITH  
THE QHT BIASI B10 SERIES BOILER SYSTEM.  
Please refer to figures below for Barometric Damper location for either oil or gas  
and to the next page for the proper location of the trim components.  
BAROMETRIC DAMPER  
WITH MANUAL RESET  
SPILL SWITCH  
ALTERNATIVE  
DAMPER LOCATION  
BIASI B10  
GAS COCK  
POWER GAS  
BURNER  
DRIP LEG  
Heat Wise  
GAS TRAIN  
UNION  
NOTE: See Page 19 for  
available gas burners in  
North America  
P
4. Installation of Boiler Trim Components Cont.  
1. Install L4006A aquastat 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 220o F, 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 7248U, 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  
Honeywell’s instructions. The 7248 can be adjusted between 140o F and 220o F  
with a fixed differential of 30 degrees.  
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 3/4” plug in opposite lower rear tapping, and/or 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.  
7. Install boiler door bolts on opposite side of door hinge.  
Boiler Tapping Diagram:  
1
3
4
Ø1 Supply Tapping  
2
Ø
PRV or Hi Limit Control Tapping  
1
2
Ø
Pressure/Temperature Guage Tapping  
3
4
Ø
Hi Limit Control or PRV Tapping  
Ø6 Exhaust Breeching  
3X 27  
22  
1
Ø3 Burner Blast Tube Orifice  
2
27  
3
4
Ø
Alternative Boiler Drain Tapping  
1
2
11  
1
2
1
3
3
4
Ø1 Return Tapping  
2
4
3
4
3
4
Ø
Alternative Boiler Drain Tapping  
Ø
Boiler Drain Tapping  
1
2
2X 4  
Page 11  
5. Piping the Boiler  
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  
hangars 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.  
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.  
Page 12  
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.)  
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 with 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 of reasonable ambient temperature 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 13  
6. Intake Venting Cont.  
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/H as shown in  
pictures. 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.  
Figure A.  
Page 14  
7. Exhaust Venting  
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 liner manufacturer for the appropriate chimney  
liner.  
The chimney discharge opening 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 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, then you should consider lining the chimney or  
using a listed, "power venting" or " direct venting unit". 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.  
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 isn't 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.  
7.1 Common Exhaust Venting Cont.  
Common vent exhaust:  
If this boiler is replacing one that 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 re-  
maining connected to the common venting system. Place each appliance in opera-  
tion, 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 deter-  
mine there is no blockage or restriction, leakage, corrosion and other deficiencies  
which could cause an unsafe condition.  
Page 15  
7.1 Common Exhaust Venting Cont.  
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.  
7.2 Blocked Flue Switch:  
1. Pierce a 5/8” hole into the vent pipe near the appliance outlet. Remove one of the securing  
nuts from the pipe of the safety switch. Tighten the other securing nut onto the pipe as far  
as possible.  
2. Insert the threaded pipe end into the pierced hole, then install the securing nut, then install  
the securing nut, which was removed in step 1, and tighten securely.  
3. Please consult the wiring section of this manual for the wiring of the blocked flue switch.  
Page 16  
7.3 Gas 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.  
Page 17  
8. Burner Setup  
Good, reliable operation with a minimum of service, starts with attention to the small  
details:  
Oil:  
1. Setting the nozzle position and electrodes "by the book" 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.  
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, CO2 levels, 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.  
TRIM INSULATION IN  
BOILER DOOR OPENING  
TO 4.25” FOR BECKETT AFG  
BLAST TUBE.  
Page 18  
8.1 Oil Burner Setup  
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.  
BURNER MANUFACTURER: Beckett NX  
Boiler Model  
Burner Model  
Firing Rate  
Insertion Depth  
Nozzle  
Spray Pattern  
Pump Pressure  
Head Type  
B-3  
B-4  
B-5  
B-6  
NEC-1103*  
1.20  
6.00"  
0.90 X 60  
W
180 psi  
NX90LB  
3.75  
NEC-1102* NEC-1101* NEC-1101*  
0.55  
3.50"  
0.50 X 60  
hollow  
180 psi  
NX70LC  
0.75  
0.90  
6.00"  
0.65 X 60  
solid  
180 psi  
NX90LB  
2.75  
1.00  
6.00"  
0.75 X 60  
solid  
180 psi  
NX90LB  
3.75  
Head Position  
BURNER MANUFACTURER: Beckett AFII  
*The highlighted burners are  
not listed by ULC and may  
not be installed on Biasi  
equipment in Canada.  
Boiler Model  
Burner Model  
Firing Rate  
B-4  
NEC-301*  
0.8  
B-5  
NEC-302*  
1
B-6  
NEC-303*  
1.25  
2.75"  
1.00 X 60  
solid  
B-7  
NEC-303*  
1.5  
2.75"  
1.10 X 60  
Solid  
185 psi  
9 slot  
6
Insertion Depth  
Nozzle  
Spray Pattern  
Pump Pressure  
Head Type  
2.75"  
2.75"  
0.85 X 60  
solid  
140 psi  
6 slot  
4
0.65 X 60  
hollow  
160 psi  
6 slot  
160 psi  
9 slot  
Head Position  
3
5
BURNER MANUFACTURER: Beckett AFG  
Boiler Model  
Burner Model  
Firing Rate  
B-3  
NEC 1301  
0.55  
B-4  
NEC 1302  
0.80  
B-5  
NEC 1303  
1.00  
B-6  
NEC 1304  
1.25  
B-7  
NEC 1304  
1.50  
Insertion Depth  
Nozzle  
2.75"  
0.50 x 60  
Solid  
180 psi  
L1  
2.75"  
0.75 X 60  
Solid  
150 psi  
L1  
10.0  
6.0"  
0.75 X 60  
Solid  
175 psi  
V1  
7.0  
3.5"  
1.10 X 60  
Solid  
125 psi  
V1  
10.0  
3.5"  
1.35 X 60  
Solid  
125 psi  
V1/2 Setting  
10.0  
Spray Pattern  
Pump Pressure  
Head Type  
Air Shutter  
Air Band  
8.0  
0.0  
0.0  
0.0  
1.0  
3.0  
BURNER MANUFACTURER  
Pioneer  
Heat Wise  
Boiler Model  
Burner Model  
Firing Rate  
B-3  
P-1 FV(1)  
0.55  
B-4  
P-1 KA  
0.90  
B-5  
P-1 KA  
1.00  
B-6  
P-2 KA  
1.25  
B-7  
P-2KA  
1.50  
B-8  
P-2KA  
1.8  
B-9  
P-2KA  
2.1  
Nozzle  
0.40 X 80  
Solid  
190  
0.65 X 70  
Solid  
190  
0.85 X 70  
Semi Solid  
140  
1.00 X 80  
Hollow  
155  
1.25 X 80  
Hollow  
145  
1.5 X 80  
Hollow  
145  
10.75  
6
1.75 X 70  
Solid  
140  
14.25  
11  
Spray Pattern  
Pump Pressure  
Head Setting  
Air Setting  
1
0
1
9.5  
1
16.5  
3.75  
6
6
11  
1) 120-mm Fan Needed  
BURNER MANUFACTURER  
Riello F-40 Series  
Boiler Model  
Burner Model  
Firing Rate  
Insertion Depth  
Nozzle  
Spray Pattern  
Pump Pressure  
Turbulator  
B-3  
F-3  
0.55  
B-4  
F-3  
0.80  
B-5  
F-5  
1.00  
B-6  
F-5  
1.25  
B-7  
F-5  
1.50  
B-8  
F-10  
1.80  
3.0"  
1.50 X 60  
B
B-9  
F-10  
2.10  
3.0"  
1.75 X 60  
B
3.0"  
3.0"  
3.0"  
3.0"  
3.0"  
0.50 X 80  
W
145 PSI  
1
0.65 X 80  
W
145 PSI  
2
0.85 X 60  
W
145 PSI  
2
1.00 X 60  
W
145 PSI  
3
1.25 X 60  
W
145 PSI  
4
145 PSI  
2
145 PSI  
3
Air Gate  
2-2.7  
3.5-4.5  
2.8-.3.4  
3-5  
4.5-6  
2.8-3.4  
3-4.1  
Page 19  
8.2 Gas Burner Setup  
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.  
Natural Gas  
Propane  
Riello  
Boiler Model  
Burner Model  
Input  
(MBH)  
Man. Pres.  
(W.C.)  
Head  
Setting  
Air  
Gate  
Man. Pres.  
(W.C.)  
Head  
Setting  
Air  
Gate  
B-4  
B-5  
B-6  
B-7  
B-8  
R200  
R200  
R200  
R400  
R400  
110  
140  
175  
207  
248  
1.06”  
1.20”  
1.46”  
1.22”  
1.26”  
2.2  
2.8  
2.8  
2
1
2
3
0
1
1.32”  
1.76”  
2.34”  
1.48”  
1.64”  
2
1
2
3
0
1
2.7  
2.9  
2
2.3  
2.3  
Natural Gas  
Heat  
Wise  
Propane  
Burner  
Model (MBH)  
Input  
Man. Pres. Head  
Air  
Orifice  
Boiler  
Model  
Man.  
Pres.  
Head  
Setting Gate  
Air  
Orifice  
(W.C.)  
Setting Gate  
(W.C.)  
B-3  
B-4  
B-5  
B-6  
B-7  
B-8  
B-9  
SU-2A  
SU-2A  
SU-2A  
SU-2A  
SU-2A  
SU-3  
80  
3.5”  
3.5”  
3.2”  
3.5”  
3.3”  
1.7”  
2.3”  
18  
12  
15  
10  
3
closed  
3
3/16  
7/32  
2.0”  
22  
12  
15  
10  
3
closed  
3
3/16  
7/32  
115  
140  
175  
215  
272  
308  
2.3”  
8.3  
9/32  
1.8”  
2.3”  
2.0”  
1.3”  
1.7”  
7.75  
13.5  
15  
9/32  
13.5  
15  
21/64  
21/64  
27/64  
27/64  
1
3.25  
6.75  
No orifice  
No orifice  
1
3.25  
6.5  
No orifice  
No orifice  
SU-3  
1
2
*Note: These burners may not be used on Biasi equipment in Canada  
Note: Consult burner manufacturers literature for gas manifold diagram and controls.  
To determine how much gas is coming into the  
burner, or to set the gas meter correctly, the  
following formula can be used.  
Size of Gas Meter Dial  
Seconds per  
Revolution  
(Cubic Foot)  
0.5  
90  
72  
60  
51  
45  
40  
36  
33  
30  
1
2
20  
25  
30  
35  
40  
45  
50  
55  
60  
180  
144  
120  
103  
90  
80  
72  
65  
60  
360  
288  
240  
206  
180  
160  
144  
131  
120  
Ft3/hr = [3600/(sec. Per rev.)]*(Size of gas meter)  
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.  
Page 20  
9. Gas Line Piping  
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.  
INSTALLATION OF SEDIMENT TRAP AND BURNER SUPPLY  
Direction of flow  
To check for gas  
leaks, use a gas detec-  
tor or apply a soap  
solution to the joints.  
DO NOT USE AN  
Manual Shutoff Valve  
Height of shutoff valve above ground  
level to conform to local codes, if any.  
Note: Massachusetts state code requires  
OPEN FLAME!  
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  
Page 21  
10. Boiler Jacket Assembly  
NOTE: All piping, boiler controls, gauges and valves should be installed before the  
jacket is assembled on the boiler. Below is an explosion view of the boiler and  
jacket assembly to clarify these boiler jacket assembly instructions. Insert the  
separate (loose) piece of insulation on top of boiler with the foil side facing in so the  
entire top, bottom and sides of boiler are covered. Place tubular jacket spacers (#35  
& #36 on exploded view of boiler) on the upper and lower draw rod extensions at the  
front(long spacers) and rear(short spacers) of the boiler. Place the rear insulated  
jacket panel (#26) at the back of the boiler, also by slipping over the slotted cut-outs.  
Position side jacket panels (#38 & #25) by slipping the slotted cut-outs over the  
boiler draw rods. Place the lower front jacket panel (#28) in place and secure with  
self-tapping screws provided. Fasten the washers and hex nuts to the ends of the  
tie-rods to hold the jacket in place. Set the top panel (#27) in place and secure with  
two screws in the back of the panel. With the jacket firmly secured, place front panel  
(#37) in position on the tabs on the side panels and press firmly to snap spring  
connectors in place.  
NOTE: Do not attach any electrical wiring or electrical conduit or boiler piping to the  
top panel (#27).  
Note: For replacement parts, contact your local Biasi Wholesaler.  
Boiler Jacket Assembly:  
25 RH Side Jacket Panel  
26 Rear Jacket Panel *  
27 Top Jacket Panel  
28 Lower Front Jacket Panel  
29 Top & Side Insulation  
30 Front Panel Pin Clips  
31 Self Tapping Screws (Qty 2)  
32 Jacket Mounting Nut (Qty 8)  
33 Jacket Mounting Washer (Qty8)  
34 Front Panel Mounting Pins  
35 Long Jacket Spacer (Qty 4)  
36 Short Jacket Spacer (Qty 4)  
37 Front Jacket Panel *  
38 LH Side Jacket Panel  
* Supplied with attached insulation  
P
11. Wiring  
The electricity to the boiler shall come from a dedicated breaker in the electric  
service box. A service switch should be mounted on the side of the boiler so the  
burner technician can service the burner and controls. The electrical wiring should  
be routed so as not to interfere with normal servicing of the boiler. Wiring done in the  
field between devices not attached to boiler shall conform with the temperature  
limitations for type T wire (63F/35C) or other specified wire as applicable when  
installed in accordance to manufacturer's instructions and wiring diagrams.  
If an external electrical source is utilized, the boiler, when installed, must be  
electrically bonded to ground in accordance with the requirements of the authority  
having jurisdiction or, in the absence of such requirements, with the National  
Electrical Code, ANSI/NFPA 70 and/or the Canadian Electrical Code Part 1, CSA  
C22.1, Electrical Code.  
Since the boiler is equipped with a swinging burner door, the supplied 48”  
long burner wiring harness with 4-prong quick disconnect plug needs to be used.  
The short end of the wiring harness needs to be wired to the burner following the  
respective burner wiring diagram in the subsequent pages of this manual. The long  
end of the wiring harness needs to be wired into the burner service switch located at  
the installers discretion.  
Refer to pages 19 to 23 for oil wiring diagrams and pages 24 to 25 for gas wiring  
diagrams.  
Page 23  
11. Wiring  
7248U WIRING PROCEDURE  
If you received a Honeywell 7248U with your Biasi boiler, you will need to make the changes  
shown above, and described below to the wiring diagrams.  
1. Run wire 1 to the L1 terminal on the 7248U instead of running wire 1 to the 4006A.  
2. Run wire 2 to the L2 terminal on the 7248U instead of connecting to wire 4.  
3. Run wire 4 to the B2 terminal on the 7248U instead of connecting to wire 2.  
4. Run wire 5 to the B1 terminal on the 7248U instead of connecting to the isolated end  
switch.  
5. Lastly, run low voltage wiring from the TT terminals on the 7248U to the isolated end  
switch.  
Page 24  
11. Oil Burner Wiring  
Page 27  
Page 28  
Page 29  
Page 30  
Page 31  
12. Commissioning  
Before a gas boiler may be put into operation and tested, it’s gas connection  
must be leak tested. After installation of oil/gas-fired boiler, operation and  
performance tests shall be conducted to make certain that the burner is operating in  
an acceptable manner and that all safety controls and devices function properly. It is  
critical that the high limit, low water cutoff and burner "cad cell" relay be checked for  
normal operation before leaving the job.  
CAUTION  
Label all wires prior to disconnection when servicing controls. Wiring errors can  
cause improper and dangerous operation.  
13. Maintenance  
The Biasi boiler system should be serviced once a year.  
1. Inspect the boiler and make sure it is operating normally, i.e. temperature and  
pressure.  
2. Inspect the Pressure Relief Valve and manually set it off three times to ensure it  
is operating normally and not leaking.  
3. If a Low Water Cut-Off is installed follow the manufactures suggested  
maintenance and test procedures.  
4. Adjust room thermostat so there is a call for heat and test boiler high limit for  
proper operation.  
5. Turn boiler safety switch off.  
6. Open lower swing door and remove upper clean out plate.  
7. Brush upper passages first and then clean combustion chamber of any debris  
with brush and vacuum.  
8. Remove smoke pipe and clean out debris from cleaning or soot build up.  
9. Inspect smoke pipe for any corrosion before reinstalling. Replace if necessary.  
10.Consult the burner manufacturers manual for annual maintenance of the burner.  
11.Remove all combustible materials from around boiler and ensure the area is free  
of debris so the burner has adequate intake air supply.  
Notice  
Verify proper operation after servicing.  
Page 32  
14. Installer Notes  
System Checkout:  
Boiler Model No._________________  
Serial No.__________  
Installer:  
Original Purchaser:  
_________________________  
______________________  
_________________________  
_________________________  
______________________  
______________________  
Burner Manufacturer-----------  
Burner Model No.--------------  
Nozzle Manufacturer-------------  
G.P.H. --------------------  
Type of Oil Burner-------------  
Burner Serial No.--------------  
Nozzle Spray Angle------------  
Type -----------------------  
Burner Performance Tests:  
GROSS STACK TEMPERATURE --------------------  
ROOM TEMPERATURE (AMBIENT) -------------------  
NET STACK TEMPERATURE ---------------------  
CO2 -----------------  
O2----------------  
SMOKE READING ----------------  
COMBUSTION EFFICIENCY----------------------  
COMMENTS  
Page 33  
Page 34  
Page 35  
Warrantyfor BIASI - B10 Residential  
Cast-Iron Water Boilers  
FIRST YEAR-WARRANTY FOR B10 SERIES RESIDENTIAL HOT  
WATER BOILERS: QHT warrants that its cast-iron boiler and casing  
are free from defects in material and workmanship for one year from QHT and Biasi will not be responsible for:  
Portsmouth, NH, freight pre-paid.  
the date of installation. If the boiler is found to be defective within  
this period, QHT will replace the boiler block or casing.  
1. Components that are part of the heating system, but  
were not manufactured by Biasi or QHT as part of the boiler.  
2. The workmanship of the installers of VEGA B-10 boilers.  
Furthermore, this warranty does not assume any liability for  
unsatisfactory performance caused by improper installation.  
3. Any costs for labor to remove or replace the faulty component.  
4. Improper burner application or adjustments, control settings,  
care or maintenance.  
LIFETIME WARRANTY-WARRANTY FOR THE CAST IRON  
BOILER BLOCKS OF THE B10 SERIES RESIDENTIAL BOILERS:  
Biasi warrants that the cast-iron sections and nipples of the BIASI  
B10 boilers are free from defects in material and workmanship for  
the lifetime of the original single family home installation. If the B10  
boiler block is then found to be defective, QHT and Biasi will replace 5. Any damage associated with corrosion or leakage due to the  
the original cast iron boiler block.  
use of "non-barrier", plastic pipe in the heating system.  
These warranties are subject to the condition that a heating  
*THIS WARRANTY DOES NOT EXTEND TO ANYONE EXCEPT  
contractor whose principal occupation is the sale and installation of THE FIRST PURCHASER AT RETAIL AND ONLY WHEN THE  
heating equipment must have installed the boiler.  
BOILER IS IN THE ORIGINAL INSTALLATION SITE.  
PARTS, WHICH ARE COVERED, consists of all materials supplied *IMPLIED WARRANTIES OF FITNESS FOR A PARTICULAR  
by Biasi, identified by QHT's part numbers in its literature. Other  
PURPOSE AND MERCHANTABILITY SHALL BE LIMITED TO THE  
parts supplied in the casing, trim kit or in the burner pack carry their DURATION OF THE EXPRESSED WARRANTY. BIASI AND QHT  
own warranty and each manufacturer has responsibility for its own  
products.  
EXPRESSLY DISCLAIM AND EXCLUDE ANY LIABILITY FOR  
CONSEQUENTIAL OR INCIDENTAL DAMAGES FOR BREACH  
OF ANY EXPRESSED OR IMPLIED WARRANTY.  
NOTE: ANY PART, WHICH IS REPLACED UNDER WARRANTY,  
CARRIES ONLY THE UNEXPIRED PORTION OF THE ORIGINAL THIS WARRANTY GIVES YOU SPECIFIC LEGAL RIGHTS, AND  
WARRANTY.  
YOU MAY HAVE OTHER RIGHTS THAT VARY FROM STATE TO  
STATE.  
OWNER RESPONSIBILITIES:  
1. Provide for proper installation, which includes pressure relief  
and pressure reducing valves and high limit safety controls on  
closed systems.  
2. Provide qualified periodic service to prolong proper operation  
and service.  
3. Insure that boiler is installed with approved burner and that  
installation conforms to all codes and ordinances.  
4. This warranty does not apply to boilers, which are subject to  
misuse, abuse, neglect, alteration, accident, excessive  
temperature, excessive pressure, or corrosive water or  
atmosphere.  
For prompt warranty service, notify the installer, who, in turn, will  
notify the distributor from whom he purchased the boiler. If this does  
not result in corrective action, contact Biasi through Quincy Hydronic  
Technologies (Address Below) with details in support of the  
warranty claim. All claims must be processed through proper trade  
channels. Contact with Biasi directly is not recommended for rapid  
claim settlement.  
Quincy Hydronic Technologies,  
80 Rochester Ave. Suite #12  
Portsmouth, NH, 03801  
Tel. (603) 334-6400  
5. Owner will be responsible for return of faulty components to  
BIASI BOILER WARRANTY REGISTRATION  
IMPORTANT., Registration required. To gain complete warranty  
protection, fill in and mail this card immediately.  
PLACE  
STAMP  
HERE  
NAME  
STREET  
QHT Inc.  
80 Rochester Ave.  
Suite #12  
CITY  
STATE  
ZIP  
BOILER SERIAL NO.  
NAME OF INSTALL CO.  
STREET  
DATE OF INSTALL  
Portsmouth, NH 03801  
CITY  
STATE  
ZIP  
B10 BOILER SIZE (EX. 4 SECTION)  
SILVER RATINGS LABEL SERIAL #  
HOW DID YOU HEAR ABOUT BIASI?  
DEALER/INSTALLER  
OTHER  
WEBSITE  
FRIEND/NEIGHBOR  
Item#: B10/C-REV.G  

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