Carrier BW9 Series Instruction Manual

Gas-Fired Direct Vent Condensing Water Boiler
Model BW9
Gas-Fired
Direct Vent
Condensing
Water Boiler

USER’S INFORMATION
MANUAL FOR THE
OPERATION AND
MAINTENANCE OF YOUR
NEW GAS-FIRED DIRECT
VENT CONDENSING BOILER
NOTE TO INSTALLER:
This manual must be left with the equipment user.
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.
— Do not store or use gasoline or other flammable vapors and
liquids in the vicinity of this or any other appliance.
— WHAT TO DO IFYOU 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 suppliers’s instructions.
• If you cannot reach your gas supplier, call the fire department.
— Installation and service must be performed by a qualified
installer, service agency or the gas supplier.

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Congratulations!Your new gas-fired indoor boiler is an excellent choice and sound investment in home heating comfort.Your modern
boilerrepresents thelatestin engineering developmentandis the culminationof manyyears ofexperiencefromone of themostreputable
manufacturers of residential hydronic heating systems.
Not only is your new boiler one of the most energy-efficient heating systems you can buy today, it is also one of the safest and most
dependable. With only minimal care, your new boiler will continue to deliver money-saving home comfort and enjoyment for many
years to come. Spend just a few minutes with this manual to learn the operation of your new boiler and the small amount of maintenance
it takes to help keep it operating at peak efficiency.
Model BW9
Gas-Fired Direct Vent
Condensing Water Boiler 1
BOILER IDENTIFICATION
For your convenience, record the product and serial numbers of your new boiler on the form below. Should you ever require service,
you will have ready access to the information needed by the service representative.
Product No.
Serial No .
Date Installed
Dealer Name
Address
City
State Zip
Telephone

3
2
3
BOILER DRAIN
CONTROL PANEL
AIR PRESSURE SWITCH
TRANSFORMER
EXHAUST TEE WITH DRAIN
FLUE EXHAUSTER
INTEGRATED
BOILER CONTROL
WITH DIAGNOSTICS
CONDENSATE TUBE
PRE-MIX BURNER
SIGHT GLASS
GAS VALVE
TEMPERATURE/
PRESSURE GAUGE

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IMPORTANT FACTS ABOUTYOUR NEW BOILER
Your boiler must have air for combustion and ventilation. Do not enclose in an airtight room or enclosure.
Tominimizethepossibilityofseriouspersonalinjury,fire,damagetoyourboiler,orimproperoperation, carefullyfollowthesesafetyrules:
1. Keep the area around your boiler free of combustible materials, gasoline, and other flammable liquids and vapors.
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2. Do not cover the boiler, store trash or debris near it, or in any way block the flow of fresh air to the unit.
3. A boiler installed in an insulated space must be kept free and clear of insulating material. Examine the boiler area when installing
or adding more insulation. Some materials may be combustible.
4. Combustion air must be clean and uncontaminated with chlorine or flourine (halogenated hydrocarbons). These compounds are
present in many products around the home such as water softener salts, laundry bleaches, detergents, adhesives, paints, varnishes,
paint strippers, waxes, and plastics.
Make sure the combustion air for your boiler does not contain any of these compounds. Keep containers tightly closed. During
remodeling or construction, be sure the air around your boiler is fresh and uncontaminated. If these compounds are burned in your
boiler, the sections and metal vent system may deteriorate.
5. Improper installation, adjustment, alteration, service, maintenance, or use can cause carbon monoxide poisoning, explosion, fire,
electric shock, or other occurrences which may injure you or damage your property. Consult a qualified installer, service agency, or
the gas supplier for information or assistance.
6 Do not use this appliance if any part has been under water. Immediately call a qualified service technician to inspect the appliance
and to replace any part of the control system and any gas control that has been under water.
STARTINGYOUR BOILER
This appliance does not have a pilot. It is equipped with an ignition device that automatically lights the burner. DO NOT try to light
the burner by hand.
BEFORE OPERATING smell all around the appliance area for gas. Be sure to smell next to the floor because some gas is heavier
than air and will settle on the floor.
WHATTO DO IFYOU 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 cannot reach your gas supplier, call the fire department.
Use only your hand to turn the gas control knob. Never use tools. If the knob will not turn by hand, don’t try to repair it, call a qualified
service technician. Force or attempted repair may result in a fire or explosion.
Do not use this appliance if any part has been under water. Immediately call a qualified service technician to inspect the appliance and
to replace any part of the control system and any gas control, which has been under water.
1. Set the thermostat to lowest setting.
2. Turn off all electric power to the appliance.
.
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5
GAS CONTROL
KNOB SHOWN
IN "ON" POSITION
GAS
INLET
OFF
ON
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3. This appliance is equipped with an ignition device, which automatically lights the burner. DO NOT try to light the burner by hand.
4. Remove the front jacket panel.
5. Turn the gas control knob clockwise to “OFF”.
6. Wait five (5) minutes to clear out any gas. Then smell for gas, including near the floor. If you smell gas, STOP! Follow “WHAT
TO DO IFYOU SMELL GAS” in the instructions above. If you don’t smell gas, go to next step.
7. Turn the gas control knob counterclockwise to “ON”.
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8. Replace the front jacket panel.
9. Turn on all electric power to the appliance.
10. Set thermostat to desired setting.
11. If the appliance will not operate, follow the instructions “TO TURN OFF GAS TOAPPLIANCE” and call your service technician
or gas supplier.
SHUTTING DOWNYOUR BOILER
Once the heating season has ended, or should you ever suspect a malfunction in your boiler, you will want to turn the boiler off. The
following procedures must be followed:
1. Set the thermostat to lowest setting.
2. Turn off all electric power to the appliance.
3. Remove the front jacket panel.
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GAS CONTROL
KNOB SHOWN
IN "ON" POSITION
GAS
INLET
OFF
ON
GAS CONTROL
KNOB SHOWN
IN "ON" POSITION
GAS
INLET
OFF
ON

6
4. Turn the gas control knob clockwise to “OFF”. Do not force.
5. Replace the front jacket panel.
PERFORMING ROUTINE MAINTENANCE
With only routine maintenance and care, you can rely on your new boiler to operate economically and reliably for many years. Some
of the maintenance you may want to do yourself. However, before performing any service on your boiler, please carefully consider the
following:
1. Turn off electrical power supply to your boiler before removing access door to service or perform maintenance.
2. Although special care has been taken to reduce sharp edges to a minimum, be extremely careful when handling parts or reaching
into boiler.
COMBUSTION AREA ANDVENT SYSTEM
Visually inspect the combustion area and vent system before each heating season. When dirt, soot, scale, or rust builds up, your boiler
can lose efficiency and perform improperly. Accumulations on the main burners can result in the burners firing out of normal sequence.
This delayed ignition will create an alarmingly loud sound.
CAUTION: If your boiler makes an especially loud noise when the main burners light, shut down your boiler and call
your dealer.
To inspect the combustion area and vent system, you will need a flashlight. Then referring to Fig. 16, 17, and 18, proceed as follows:
1. Turn the electrical supply to the boiler to OFF, and remove burner access door.
2. Using the sight glass, carefully inspect the burner area including the burner for dirt, soot, or rust, service and additional maintenance
information can be located in the installation instructions.
CAUTION: If dirt, rust, soot, or scale accumulations are found, call your dealer. DO NOT OPERATE YOUR BOILER.
3. Inspect the flue pipe for sags, holes, or disconnections.
WARNING: If holes are found in the vent pipe or if pipe has become disconnected, toxic fumes can escape into your
home. DO NOT OPERATE YOUR BOILER. Call your dealer for service.
SIGHT GLASS
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A CHECKUP LIST
Your boiler represents an important investment in your family’s comfort and your home’s value. To keep it in tip-top shape and prevent
futureproblems, havea trained servicespecialist give your boilera professionalcheckup at leastonce eachyear. The following checklist
can be used as a guideline to proper service.
4. Turn the electrical supply to the boiler to ON.
5. Start your boiler and observe its operation. Watch the burner flames to see if they are bright blue.
6. Replace burner access door.
If you observe a suspected malfunction, or that the burner flames are not bright blue, call your dealer.
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• Inspect all flue product passages including the burner, passages between the section, and exhaust and intake pipes.
• Remove and clean intake air baffle. * Inspect all combustion and ventilation air passages and openings.
• Inspect electrical wiring, connections, and components for loose connections. * Check gas pipes leading to and inside you boiler
for leaks.
• Clean all drain lines.
• Perform an operational checkout to determine whether your boiler is working properly, and if it requires adjustments.
• Check all safety controls such as limit switch, pressure relief valve, etc. for proper operation.
• Consult the installation instructions for additional service and maintenance information.
If your boiler is not operating or not performing properly, you may save the expense of a service call by checking a few things yourself
before calling for service.
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© 1999 CAC/BDP, P.O. Box 70, Indianapolis, IN 46206
Form: OG-BW9A-01 Cancels: NEW Printed in U.S.A. 10-99 Catalog No. 63BW-9A1
BEFOREYOU REQUEST A SERVICE CALL
IFYOUR BOILER FAILSTO OPERATE
Follow this checklist step by step, advancing to the next one only if boiler fails to operate.
• Check thermostat for proper temperature setting.
• Is electrical power supply to boiler on?
• Is manual shut-off valve in gas supply pipe in open position? (Follow start-up procedures if you open gas line.)
NOTE: Turn the electrical power to OFF and remove access doors before continuing with the checklist.
• Control dial on gas valve in ON position? (Follow start-up procedures if you must reset dial to ON.)
If you boiler still fails to operate, call your service representative.
For you convenience, record the model and serial numbers of your new boiler on the provided form. Should you ever require service,
you will have ready access to the information needed by the service representative.