Carrier BW9 Series Guide

Ax WARNING: FIRE OR EXPLOSION
HAZARD If the information in this manual is
not followed exactly, a fire or explosion could
result causing property damage, personal
injury or death.
-- Do not store or use gasoline or other flanunable vapors and
liquids in the vicinity of this or any other appliance.
-- WHAT TO DO IF YOU SMELL GAS:
• Do not try to light any appliance.
• Do not touch any electrical switch; do not use any phone
in your building.
• hnlnediately call your gas supplier floln a
neighbor's phone. Follow the gas supplier'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.
NOTE TO INSTALLER:
This manual must be left with the equipment user.
USER:
Please read all manuals and retain manuals for
future reference.
_WARNING: CARBON MONOXIDE
POISONING HAZARD
Failure to follow this warning could result in
personal injury or death. Carbon Monoxide is
invisible, odorless, and toxic! We recommend a
carbon monoxide alarm in your home, even if
you do not own a gas appliance. Locate the car-
bon monoxide alarm in the living area of your
home and away from gas appliances and door-
ways to attached garages. Follow the alarm
manufacturer's instructions included with the
alarm.
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
Do not use this furnace if any part has been un-
der water. A flood-damaged furnace is extreme-
ly dangerous. Attempts to use the furnace can
result in fire or explosion. A qualified service
agency should be contacted to inspect the fur-
nace and to replace all gas controls, control sys-
tem parts, electrical parts that have been wet or
the furnace if deemed necessary.

Congratulations! Your new gas-fired indoor boiler is all excellent choice and sound investment in home heating comfort. Your modem boiler
represents the latest ill engineering development and is the culmination of many years of experience from one of the most reputable manufac-
turers 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 eujoymeut 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 eMcieucy.
--.
Model BW9-50Through 100
Gas-Fired Direct Vent
Condensing Water Boiler
O0 0 0
0
J
Model BW9-125 Through 200
Gas-Fired Direct Vent
Condensing Water Boiler
BOILER IDENTIFICATION
For your conveuieuce, record the product and serial uumbers 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
Telephone
Zip
--2 m

Typical boiler and piping arrangements are shown ill Fig, 3 through 6. Since there are many variations ill boiler piping systems,
your system may not look the same as shown. Your dealer is your best resource to explain your particular boiler piping arrangement.
SEIRgICE _ /SUPPLY TO SERVICE % SUPPLY TO
SERV£CE
VALVE
BW9 050, 075, 100
Typical Single Zone Piping
CANVENT ,/
'LFEED
BW9 125, 150, 175, 200
Typical Single Zone Piping
BW9 050, 075, 100
Typical Multi-Zone Piping
ZONESERVICE
P_ESSURE
nEDUClNGVA_E \ \
BW9 125, 150, 175, 200
Typical Multi-Zone Piping
_TRANSFORMER
_EXHAUSTTEE WITH DRAIN
_FLUE EXHAUSTER
LOWWATER CUTOFF
MANUALGAS
SHUTOFF _
COMBUSTION f
AIR_NTAKE _1_
EXHAUSTTEE
WITH DRAIN
SIGHT GLASS HOT SURFACE
IGN]TOtq
-- PnE M]X
i
y/
AtR [3LOWER
CONTROLWITH
D_AGNOSTIOS
4_ P_qESSU_qE
_ SW_TCHE8
BW9 050, 075, 100 BW9 125, 150, 175, 200
Component Location Component Location
--3--

SAFETY CONSIDERATIONS
Installing and servicing heating equipment can be hazardous due to gas and electrical components. Only trained and qualified personnel should
install, repair, or service heating equipment.
Untrained personnel may perform the inspections shown in this Owners Guide. All other operations must be performed by trained service
personnel. Observe safety precautions in this manual, on tags, and on labels attached to the boiler, and other safety precautions that may apply.
Recognize safety information. This is the safety-alert symbol Z_. When you see this symbol on the boiler and in instructions or manuals, be
alert to the potential for personal injury.
Understand the signal words DANGER, WARNING, and CAUTION. These words are used with the safety-alert symbol. DANGER identifies
the most serious hazards which will result in severe personal injury or death. WARNING signifies hazards which could result in personal iujury
or death. CAUTION is used to identify unsafe practices which may result in minor personal injury or product and property damage. NOTE is
used to highlight suggestions which will result in enhanced installation, reliability or operation.
IMPORTANT FACTS ABOUTYOUR BOILER (DO'S AND DON'TS)
• DO: READAND UNDERSTAND THIS MANUAL,
• DO: Have your boiler and vent system inspected annually by a qualified service technician.
• DO: Inspect your boiler monthly for water leaks or other obvious signs service may be required.
• DO: Provide adequate airflow to the boiler or efficient combustion and safe ventilation.
• DO: Keep your boiler free and clear of insulation material. Some materials may be combustible. Examine the boiler area when the boiler is
installed or when insulation is added.
• DO NOT: Enclose your boiler in an airtight room. Allow for adequate ventilation of the boiler room or combustion air of other appliances.
• DO NOT: Keep combustible materials, gasoline, and other flammable liquids or vapors around your boiler.
9
• DO NOT: Cover your boiler in any manner.
• DO NOT: Store anything (including trash or debris) near your boilel:
• DO NOT: In any way block or restrict airflow around your boiler.
• DO NOT: In any way block or restrict airflow to your supply air and return air grills.
• DO NOT: Use your boiler room as a broom closet or a place to store any kind of chemical or cleaner.
10
BEFORE STARTING YOUR BOILER
Examine the boiler installation to determine that:
1. All flue gas carrying areas external to the boiler (i.e. 2 pipe termiuation or concentric vent) are clear and free of obstructions.
2. The combustion air and intake pipes are in place, slopes back to the boiler and are physically sound without holes, sags or evidence of leaks.
3. The circulating water piping is physically sound, without missiug pipe hangars or evidence of water leaks.
4. The physical support of the boiler is sound without sagging cracks, gaps, etc. around the base.
5. There are no obvious signs of deterioration of the boilel:
STARTING YOUR BOILER
This appliance does not have a pilot. It is equipped with an ignition device that automatically lights the burum: 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.
--4--

WHATTO DO IFYOU SMELL GAS
Do not try to light ally appliance. Do not touch ally electric switch; do not use ally phone ill your building. Iruruediately 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 ware1:
1. Set the thermostat to lowest setting. (See Fig. 11)
2. Turn off all electric power to the appliance. (See Fig. 12)
MODE FAN
uP
DOWN
11 12 13
3. This appliance is equipped with all ignition device, which autoruatically lights tile burner. DO NOT try to light tile burner by hand.
4. Remove the front jacket panel. (See Fig. 14 or 16)
5. Turn the gas control knob clockwise to "OFF" on BW9 050, 075 and 100 models. (See Fig. 17) On BW9 125, 150, 175 and 200 models
turn manual gas control valve to "OFF". (See Fig. 15)
14 Model BW9-125 Through 200 15
16
0
GAS
INLET
Model BW9-50Through 100
OFF
GAS CONTROL
KNOB SHOWN
IN "ON" POSITION
17
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
IF YOU 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" for BW9 050, 075 and 100 ruodels. (See Fig. 18) On BW9 125, 150, 175 and 200
models turn manual gas control valve to "ON". (See Fig. 19)
--5--

GAS CONTROL
KNOB SHOWN
IN "ON" POSITION
18 19 20
BW9-50 Through 100 BW9-125 Through 200
8. Replace the front jacket panel.
9. Turn on all electric power to the appliance. (See Fig. 20)
10. Set thermostat to desired setting.
11. If the appliance will not operate, follow the instructions "TO TURN OFF GAS TO APPLIANCE" and call your service technician or gas
suppliel:
SHUTTING DOWN YOUR 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. (See Fig. 21)
2. Turn off all electric power to the appliance. (See Fig. 22)
3. Remove the front jacket panel.
LF_r_ _
!2! NTROL
KNOB SHOWN
IN ,,ON,, POSiT_ON
21 22 23 24
BW9-50 Through 100 BW9-125 Through 200
4. Turn the gas control knob clockwise to "OFF". Do not force. (See Fig. 23 or 24)
5. Replace the front jacket panel.
PERFORMING ROUTINE MAINTENANCE
With only routine maiuteuauce aud care, you can rely on your uew boiler to operate economically for mauy 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.
z_ WARNING: ELECTRICAL SHOCK HAZARD. A failure to follow this warning could result in personal injury or death.
Turn off electrical power supply to your boiler before removing the access doors 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 leaching into boilel:
COMBUSTION AREA AND VENT SYSTEM
Visually inspect the combustion area and vent system before each heatiug season. When dirt, soot, scale, or rust builds up, your boiler can lose
efi_cieucy 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.
Z_ CAUTION: UNIT DAMAGE HAZARD. Failure to follow this caution may result in unit component damage. If your
boiler makes an especially loud noise when the main burners light, shut down your boiler and call your dealer.
--6--

To inspect the combustion area and vent system, you will need a flashlight. Then referring to Fig. 25, 26, 27 o1"Fig. 28, 29 and 30 proceed as
follows:
1, Turn the electrical supply to the boiler to OFF. and remove burner access dool:
SIGHTGLASS
O0 ° 0 _
0
25 26 27
Model BW9-125 Through 200
_ SIGHT GLASS
28 29 30
Model BW9-50 Through 200
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.
Z_ CAUTION: UNIT OPERATION HAZARD. Failure to follow this caution may result in unit or property damage. If dirt,
rust, soot, or scale accumulations are found, call your dealer. DO NOT OPERATE YOUR BOILER.
3. Inspect the exhaust pipe and combustion air pipe for sags, holes, or disconnections. Use Fig. 31 for reference.
--7--

EXHAUST TEE
31 32
WARNING: CARBON MONOXIDE POISONING AND PROPERTY DAMAGE HAZARD. A failure to follow this warning
could result in property damage, personal injury or death. If holes are found--or if the vent pipe is obstructed or is not con-
nected--toxic fumes can escape into your home. DO NOT OPERATE YOUR FURNACE. Call your dealer for service.
4. Turn the electrical supply to the boiler to ON. (See Fig. 32)
5. Start your boiler and observe its operation. Watch the burner flames to see if they are bright blue. (See Fig. 27 or 30)
6. Replace front jacket panel.
If you observe a suspected malfunction, or that the burner flames are not bright blue, call your dealel:
ACHECKUP LIST
Your boiler represents all important investment iu your family's comfort and your home's value. To keep it in tip-top shape and preveut future
problems, have a trained service specialist give your boiler a professional checkup at least once each yem: The following checklist can be used
as a guideline to proper service.
33
•Inspect all flue product passages including the burner, passages between the section, and exhaust and intake pipes.
• Remove and clean intake air bane. 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 your boiler for leaks.
• Clean all drain lines.
• Perform an operational checkout to determine whether your boiler is working properly, and if it requires at[iustmeuts.
• 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 perfonniug properly, you may save the expense of a service call by checking a few things yourself before
calling for service.
BEFORE YOU 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 your boiler still fails to operate, call your service representative.
For your convenience, record the model and serial numbers of your new boiler on the page provided in these instructions. Should you ever
require service, you will have ready access to the information needed by the service representative.
®2004 CAC/BDR RO. Box 70, Indianapolis, IN 46206
Form OG-BW9A-02 Cancels: OG-BW9A-01 --8-- Printed in U.S,A 11-04 Catalog No. 63BW-9A6