Bosch BC3200RA User manual

SBA8230-1
Rev. 10/11
CONDENSING GAS WATER HEATER
Owner’s Guide
*SBA8230 T*
Robert Bosch (Australia) Pty. Ltd.
Thank you for purchasing this Bosch Condensing Gas Water Heater.
Before using, please:
Read this manual completely for operation instructions.
Confirm warranty and proof of purchase.
Keep this manual where it can be found whenever necessary.
This appliance must be installed in accordance with the manufacturer's installation instructions, AS
5601, NZ 5261, AS3500.4.2 and all Local Water, Building and Gas fitting regulations.
Bosch reserves the right to discontinue, or change at any time, the designs and/or specifications of
its products without notice.
-Do not store or use petrol or other flammable vapours and liquids in the
vicinity of this or any other appliance.
-WHAT TO DO IF YOU SMELL GAS
•Do not try to light any appliance.
•Do not touch any electrical switch; do not use any phone in your building.
•Immediately call your gas supplier.
If the information in this manual is not followed exactly, a fire or explosion
may result causing property damage, personal injury, or death.
WARNING
- To be installed and serviced only by an authorised person
- This appliance is not suitable for use as a pool heater
Model BC3200RA
BC3200RA5
Operating Instructions
* Note : This appliance requires a minimum flow rate to operate of 2.5 litres/min., water fixtures with a
flow rate of 7.5 litres/min. or higher are recommended.
For optimum performance we reommend installation of Bosch optional temperature controllers.
[Check Water Supply Quality]
If the water supply is hard, acidic or otherwise impure, treat the water with approved
methods in order to ensure full warranty coverage.

22
Operating Instructions
Prohibited Don’t
touch.
Don’t
disassemble
the equipment.
Don’t touch
with a wet
hand.
No flame.
High
Temperature.
To prevent damage to property and injury to the user, the icons shown below will be used to warn of
varying levels of danger.
Every indication is critical to the safe operation of the water heater and must be understood and observed.
Potential dangers from accidents during installation and use are divided into the following four
categories. Closely observe these warnings; they are critical to your safety.
Other icons
DANGER
WARNING
CAUTION
DANGER indicates an imminently hazardous situation which,
if not avoided, will result in death or serious injury.
WARNING indicates a potentially hazardous situation which, if not
avoided, could result in death or serious injury.
CAUTION indicates a potentially hazardous situation which, if not
avoided, may result in minor or moderate injury.
CAUTION used without the safety alert symbol indicates a potentially
hazardous situation which, if not avoided, may result in property damage.
CAUTION
Be sure
to do. Earth
Electric
Shock.
DANGER
Icons warning of risk level
Important Safety Information
This is the safety alert symbol. It is used to alert you to potential personal injury hazards.
Obey all safety messages that follow this symbol to avoid possible injury or death.
Vapours from flammable liquids will explode and catch fire causing death or severe burns.
Do not use or store flammable products such as petrol, solvents or
adhesives in the same room or area near the water heater.
Prohibited
Keep flammable products:
1. Far away from the water
heater.
2. In approved containers.
3. Tightly closed.
4. Out of children’s reach.
Vapours:
1. Cannot be seen.
2. Vapours are heavier than air.
3. Go a long way on the floor.
4. Can be carried from other rooms
to the main burner by air currents.
Vapours
Hot Water Heater temperatures over 50 °C can cause severe burns instantly or
death from scalding.
Children, disabled and elderly are at the highest risk of being scalded.
Feel water temperature before bathing or showering.
Temperature limiting valves are available, ask licensed installer.
Prohibited
(Continued)

3
Operating Instructions
No flame.
(Continued)
Do not use the water heater
if the exhaust pipe
is displaced,
has holes, is clogged
or is corroded.
Prohibited
WARNING
Be sure
to do.
When a gas leak is noticed:
1. Stop use immediately
2. Close the gas valve
3. [When installing indoors]
Open windows and doors
If you detect abnormal combustion
or abnormal odors, or during an
earthquake, tornado or fire:
1. Turn off the hot water supply
2. Turn off the power to the water heater
3. Turn off gas and water supply valve.
4. Call the nearest Bosch agent
Be sure
to do.
Do not allow anyone to change the water
temperature while hot water is being used.
To prevent scalding, do not change the wa-
ter temperature to a higher setting.
Prohibited
Explosion Hazard ;
If the temperature and pressure relief
valve is dripping or leaking, have a
qualified service technician replace it.
Do not plug or remove the valve.
Failure to follow these instructions can result in
fire or explosion, and personal injury or death.
Prohibited
After the water heater has been out of use
for a long time or after replacing the neu-
tralizer with a new unit, make sure that
you fill the neutralizer unit with water.
This is to prevent dangerous exhaust
gases from entering the building.
(Refer to page 28 for further instructions.)
Be sure
to do.
(Continued)
Check the temperature
of the running hot water
before entering the
shower.
Check the temperature
before stepping into
the bath tub.
High
Temperature.
A. This water heater 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.
B. WHAT TO DO IF YOU SMELL
GAS.
• Do not try to light any
appliance.
• Do not touch any electrical
switch; do not use any phone
in your building.
• Immediately call your gas
supplier from a neighbor’s
phone. Follow the gas
supplier’s instructions.
• If you cannot reach your gas
supplier, call the fire
department.
C. Use only your hand to turn the
gas valve 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.
D. Do not use this water heater if
any part has been under water.
lmmediately call a qualified
service technician to inspect the
water heater and to replace any
damaged parts.
Do not use combustible chemicals such
as oil, gasoline, benzene etc. in the near
the heater or the exhaust vent terminal.
Prohibited

44
Operating Instructions
Important Safety Information
(Continued)
air supply
vent
[When installing indoors]
Check the air supply
vent for dust or
obstructions.
Be sure
to do.
Installation and service must be
performed by a qualified installer,
service agency or the gas supplier.
Be sure
to do.
Be sure
to do.
(Continued)
Do not place the exhaust vent terminal
in an indoor environment by means of
adding walls and ceiling (Do not en-
close using corrugated sheets, etc.)
Carbon monoxide poisoning or fire may
occur as a result.
Exhaust vent
terminal
Unit
Prohibited
Do not place combustibles such as
laundry, newspapers, oils etc. near
the heater or the exhaust vent
terminal. Exhaust vent terminal
(indoor installation)
Prohibited
Carbon Monoxide Poisoning Hazard. Do
not install this water heater in a mobile
home, recreation vehicle or on a boat.
Prohibited
Unit
Do not store or use petrol or other
flammable vapors and liquids in the
vicinity of this or any other appliance.
Prohibited
Do not place or use a spray can
near the water heater or the exhaust
vent terminal.
Prohibited
Leave the proper clearance between the
water heater and nearby objects (trees,
timber, boxes with flammable materials etc.).
Be sure
to do.
*Indicates suggested clearances for maintenance.
Left side:
Min. 15 cm
Min. 5 cm
from vent pipe*
Front:
Sug. 60 cm
*
[When installing indoors]
Left side:
Min. 15 cm
Right side:
Min. 15 cm
Upper:
Min. 30 cm
Front:
Sug. 60 cm
*
[When installing outdoors]
Right side:
Min. 15
cm
Be sure the gas matches
the gas on the data plate
(inside of frontcover) or
gas type label (right side
of casing).
For NG Gas
NG

5
Operating Instructions
CAUTION
If this unit will be installed in a beauty
salon or other location where hair
spray or aerosols will be used, locate
the unit in a separate area that is
supplied with fresh air from outdoors.
Prohibited
Be sure to electrically ground the
unit.
Keep power cord free of dust.
Ground.
Be sure
to do.
Do not use the water heater for
other than its intended use.
Prohibited
(Continued)
Prohibited
Do not cover the water heater and
the exhaust vent terminal, store
trash or debris near it, or in any way
block the flow of fresh air to the unit.
Do not turn off the water heater
while someone is shawering.
Prohibited
Do not use a broken or modified power
cord. Do not bind, bend or stretch
power cords. Do not scratch, modify,
or subject them to impact or force.
Do not touch the exhaust vent pipe
and exhaust vent terminal during
or immediately after operation of
the water heater.
Do not install in locations where
excessive dust or debris will be
in the air.
Prohibited
Don’t
touch.
Prohibited
Be sure
to do.
Do not allow small children to play
unsupervised in the bathroom.
Do not allow small children to
bathe unsupervised.
Do not use hair spray or spray
detergent in the vicinity of the
heater.
Do not touch the power
cord with wet hands.
Prohibited
Electric
Shock.
Don’t touch
with a wet
hand.
Prohibited
Contact a qualified service
technician for any necessary
repairs, service or maintenance.
Consult the nearest Bosch agent if
the water heater location needs to
be changed.
Don’t
disassemble
the equipment.
Be sure
to do.
To prevent burns or scalding, turn
off the power button and wait until
the equipment cools before per-
forming maintenance. Do not use condensate, discharged
from the drain pipe, for drinking or
for consumption by animals.
Prohibited

66
Operating Instructions
Important Safety Information
CAUTION
Do not drink water that has been inside the
unit for an extended period of time. Do not
drink the first use of hot water from the
unit in the morning.
Clean the filter on the water inlet as
frequently as required by the quality of
your local water.
Keep the area around the unit clean.
If boxes, weeds, cobwebs, cockroaches etc. are in
the vicinity of the unit, damage or fire can result.
Do not install the equipment where the
exhaust will blow on walls or windows.
Problems resulting from scale formation
are not covered by the warranty.
Preventing damage from freezing ( P26)
Damage can occur from frozen water within the
device and pipes even in warm environments.
Be sure to read below for appropriate measures.
Repairs for damage caused by freezing are not
covered by the warranty.
Check ignition during use and extinction
after use.
Take necessary measures to prevent
freezing of water and leakage of gas when
leaving the unit unused for long periods of
time. ( P27)
Do not use parts other than those specified
for this equipment.
If it is snowing, check the air inlet, exhaust
gas vent and exhaust vent terminal for
blockage.
Do not disassemble the remote controller.
Do not use petrol, oil or fat detergents to
clean the remote controller.
This may cause deformation.
Do not get the remote controller wet.
Although it is water resistant, too much water can
cause damage.
Do not splash water on the remote
controller. Do not expose the remote
controller to steam.
Do not locate the remote controller near stoves or
ovens, this may cause damage or failure.
Treat hard, acidic or otherwise impure
supply water with approved methods to
ensure full warranty coverage.

77
Operating Instructions
Important Safety Information....................................................................... 2
Contents ........................................................................................................ 7
Overview of Condensing Continuous Flow Gas Water Heater ................. 8
General Parts
Main Unit.................................................................................................... 9
Names and Functions of Controllers
Main Remote Controller (RCM3211)....................................................... 10
Waterproof Sub Remote Controller (RCS3211) .................................... 11
Initial Operation ........................................................................................... 12
How to Use
When using RCM3211
Running Hot Water ................................................................................... 13
Setting Hot Water Temperature ............................................................... 14
Filling Up the Bath .................................................................................... 16
Clock Adjustment ..................................................................................... 17
Other Setting Options .............................................................................. 18
Confirmation Beeper On/Off .................................................................... 20
When using RCS3211
Running Hot Water ................................................................................... 21
Setting Hot Water Temperature ............................................................... 22
Confirmation Beeper On/Off .................................................................... 24
No remote controller case
Running Hot Water ................................................................................... 25
Preventing Damage from Freezing ............................................................ 26
When Unused for an Extended Period ...................................................... 27
Regular Maintenance................................................................................... 29
Troubleshooting .......................................................................................... 32
Follow-up Service ........................................................................................ 36
Specifications .............................................................................................. 37
Manufacturer’s Warranty ............................................................................ 39
Contents

88
Operating Instructions
Cold water Cold water Gas Gas Hot water Hot water
Condensate
Combustion gas
About 200°C
About 200°C
Exhaust Exhaust
About 50°C
Conventional
type
Condensing
Continuous Flow
Gas Water Heater
Water is heated
using the exhaust
gas which is about
200°C
.
First heat exchanger
First heat exchanger
Secondary heat exchanger
Neutralizer
Combustion gas
About 200°C
Overview of Condensing Continuous Flow Gas Water Heater
This water heater is a high efficiency, fully condensing appliance. Unlike a traditional continuous flow
water heater, a condensing type captures heat from the exhaust gas and uses it to preheat the
incoming cold water as it passes through the secondary heat exchanger as illustrated below.
The condensing continuous
flow gas water heater
discharges condensate.
When heat from the exhaust gas is collected
within the secondary heat exchanger,
condensation occurs from moisture in the
exhaust gas and the resulting water is
discharged from the drain pipe (approx.
100cc/min maximum). It is not a water leak.
Do not plug or block the drain line as it must
always be allowed to freely flow.
Drain pipe
(Installation example)
Condensate
comes out
from here.
The condensing continuous flow gas
water heater tends to show white steam.
After the exhaust gas passes through the
secondary heat exchanger, it becomes low in
temperature and moisture rich which tends to
produce steam at the vent discharge terminal.
This is a normal occurrence.
During combustion, white
steam may often be seen.
This is normal.

99
Operating Instructions
General Parts
Main Unit
· The above illustration shows an example of installation.
The exact installation configuration may be slightly different.
Front Cover
Exhaust vent pipe
Water Drain Valve
(with Water Filter)
(Inside Water Inlet)
( P31)
Water Supply Valve
Air inlet
Gas Supply Valve
Lit during combustion.
Blinks to indicate a problem.
( P35)
Burner On Indicator
Drain Pipe
Discharges the condensate.

1010
Operating Instructions
The illustration below shows the remote controller display. What is actually displayed depends
on how the water heater is set.
Time Display
When the hot water tem-
perature is set between
60~80°C, “hi-temp” blinks
for 10 seconds.
High Temperature Display
(Eg.: 40°C)
Selection switches that can
be operated are indicated
by the bar display lighting
up or blinking.
Selection Bar Display
Temperature Setting
This is displayed during
burner on.
Burner On Display
< Scroll display > to prevent the remote controller screen from burning out
(This page)
(Eg.: 10:15)
Names and Functions of Controllers
Main Remote Controller (RCM3211) < Optional>
Error Display
Error is displayed when
malfunction occurs.
( P35)
Display
Set Button
For other settings.
Speaker
Power On/Off Button
For turning the heater on
and off.
Selection Button
•Used to adjust the
temperature. ( P14)
•Used for other settings.
•Details are memorized
upon adjustment or setting.
Display
· In order to prevent the screen burning out, about 10 minutes
after any remote control operation, the screen display begins
to scroll sideways.
· As soon as the remote controller is used again, the scrolling
stops. Current time (when the clock
is set) and hot water tempera-
ture scroll sideways.

Operating Instructions
11
Priority
Burner on
Priority
Burner on
Temperature Setting
Power On/Off Button
For turning the heater on
and off.
(This page)
Display
Temperature setting
Button
Used to adjust the
temperature. ( P22)
The illustration below shows the remote controller display. What is actually displayed depends
on how the water heater is set.
(Eg.: 40°C)
Error Display
Error is displayed when a
malfunction occurs.
( P35)
When this indicator is lit, the
hot water temperature can
be set.
Priority Indicator
This is displayed during
burner on.
Burner On Indicator
Waterproof Sub Remote Controller ( RCS3211 ) <Optional>
Display
The operation of the BC3200RA power supply is recorded in 10 hour increments, during this time
the combustion is also recorded. If the power supply is interrupted near the end of a 10 hour
block it will create a time lag and prematurely notify you the neutralizer requires servicing.
Note: Avoid frequent interruptions to the power supply.

1212
Operating Instructions
On this Display Operation Description
Initial Operation
Before the first use of your water heater, make the following preparations.
Follow steps 1 through 4.
Open the water supply valve.
Open a hot water fixture to confirm that
water is available, and then close the
fixture again.
Open the gas supply valve.
Hot water fixture
1
3
2
Turn on the power.
4
CLOSED OPEN

1313
Operating Instructions
On this Display Operation Description
Running Hot Water
When using RCM3211
1
2
Press the
ON/OFF
button to turn it
“On”.
Previous set temperature
(Eg.: 40°C)
* The ON/OFF is lit.
Whenever using the hot water, such as when using the shower,
check the temperature shown on the remote controller first, and
then test the hot water temperature by hand.
Be especially careful if using hot water after previously using water at 60°C or above to prevent scalding.
When the user is taking the shower, it will be dangerous if some-
one else presses the sub remote controller to change the tem-
perature or to turn off the power switch.
WARNING
WARNING
This is to prevent scalding if the temperature rises. Conversely, if the temperature drops or the
power switch is turned “off”, the user may be upset when the water suddenly becomes much colder.
(Display example)
* This is lit during combustion.
Here
Turn on hot water.
Check

1414
Operating Instructions
On this Display Operation Description
1
2
Setting Hot Water Temperature
Use the
buttons to adjust
the temperature.
Press the
ON/OFF
button to turn it
“On”.
* The ON/OFF is lit.
When using RCM3211
(Eg.: 40°C)
Here
When the user is taking the shower, it will be dangerous if some-
one else presses the sub remote controller to change the tem-
perature or to turn off the power switch.
WARNING
This is to prevent scalding if the temperature rises. Conversely, if the temperature drops or the
power switch is turned “off”, the user may be upset when the water suddenly becomes much colder.

On this Display Operation Description
Operating Instructions
15
• When a high temperature is set, the readout on the right is shown.
• Please check the temperature displayed before using any hot water.
Be especially careful using any hot water after any
previous setting of between 60 - 80°C.
•If the power switch on the remote controller is turned “on”, the
remote controller has priority in adjusting the temperature.
•When the temperature can be adjusted (console has priority), the
display screen is shown as per right.
•If the temperature cannot be adjusted, turn the power switch “off”,
and then turn it “on” again.
Approximate hot water conditions
Washing
dishes, etc. Shower, hot water supply, etc. Hot water supply, etc. High temperature
37 38 39 40 41 42 43 44 45 46 47 48 50 55 60 65 70 75 80
Set the maximum temperature to suit your own preference. ( P18 and 19)
•Hot water temperatures are approximations, and may differ from actual temperatures depending
on external factors, such as the season and length of piping involved.
• When low temperatures are set (for washing dishes, etc.), if the ambient water temperature is already
quite high, it may be difficult to ensure the resultant water temperature is as per the setting.
•When the hot water temperature is adjusted using thermostat-controlled water mixing valves, set
the temperature on the remote controller to about 10°C higher than that required to ensure the
appropriate temperature.
When setting high temperatures (60 - 80°C);
Please switch to the priority setting if the temperature
cannot be adjusted (when an additional remote controller is attached).
Here
Here
Here
(Eg.: 60°C)
Flashing
Temperature
Display for about
10 seconds to
Temperature on.
(Eg.: 40°C)

1616
Operating Instructions
On this Display Operation Description
Filling Up the Bath
Insert the bathplug into the plughole.
Preparation
1Press the
ON/OFF button
to turn it “On”.
* The ON/OFF is lit.
2Turn on hot water.
(Display example)
* Please set to the
required temperature
when using
thermostat controlled
water mixing valves.
the highest
temperature
3When the bath is full,
turn off the taps.
WARNING Check the bathwater temperature with your hand be-
fore getting into the bath.
To prevent scalding.
Check
When using RCM3211

1717
Operating Instructions
On this Display Operation Description
Press the
ON/OFF
button to turn it
“On”.
Press the
SET
button to change the
display until “time
set” is shown.
1
2
Use the  buttons
to adjust the clock.
3
< Completion of setting >
* When the
SET
button is pressed,
or the console is left untouched for
about 20 seconds, the settings
screen ends.
* The ON/OFF is lit.
*The time changes in 1-minute
increments with each press on the
button, and then in 10-minute
increments if the button is kept
pressed down.
Clock Adjustment
(Eg.: 40°C)
(Eg.: AM 10:15)
In the event of a power cut or after disconnecting the power supply, when the power is
restored, the clock on the display screen shows “0:00”, so the clock needs to be re-set.
When using RCM3211

1818
Operating Instructions
On this Display Operation Description
3
[Scroll display]
(P10)
no
yes
Scroll display is
turned on.
Scroll display is
turned off.
= Initial setting < factory setting >
75°C
-
50°C
no
yes
Condition is suitable
for draining the unit.
(P27)
Stops draining
the unit.
48°C
-
40°C
(in 1°C increments)
80°C
Other Setting Options
[Draining the unit]
(P27)
[Maximum tempera-
ture setting]
(P15)
Switching
scroll display
Scroll display ( P10) can be
switched “yes” or “no”.
Draining the unit This is set to drain the unit. ( P27)
On this Display
(in 5°C increments)
1
2
When using RCM3211

1919
Operating Instructions
On this Display Operation Description
q Press the
ON/OFF
button to “OFF”.
w Press the
SET
button
to show the settings screen.
Press the SET button
to select the setting to be
modified.
(Setting changes each time the
button is pressed.)
* This may not be displayed
depending on the
installation conditions.
Operation
On this Display
Power is switched
“Off” again.
Modification of the
maximum temperature
setting
The maximum temperature setting can be
modified.

2020
Operating Instructions
1
Confirmation Beeper On/Off
Operation Description
Press the ON/OFF button for about five
seconds.< Completion of setting >
* Setting is possible regardless
of whether the power switch is
ON/OFF.
The remote controller will emit a sound when any button is
pushed. This sound can be muted if it is desired.
* Initial factory setting is with sound.
When using RCM3211