Operating Instructions
CONDENSING GAS WATER HEATER
Owner’s Guide
Model BC3200RA
BC3200RA5
WARNING
If the information in this manual is not followed exactly, a fire or explosion
may result causing property damage, personal injury, or death.
- 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.
- To be installed and serviced only by an authorised person
- This appliance is not suitable for use as a pool heater
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.
* 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.
Robert Bosch (Australia) Pty. Ltd.
SBA8230-1
Rev. 10/11
*SBA8230 T*
Operating Instructions
Important Safety Information
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.
Icons warning of risk level
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.
DANGER
DANGER indicates an imminently hazardous situation which,
if not avoided, will result in death or serious injury.
WARNING
WARNING indicates a potentially hazardous situation which, if not
avoided, could result in death or serious injury.
CAUTION
CAUTION indicates a potentially hazardous situation which, if not
avoided, may result in minor or moderate injury.
CAUTION
CAUTION used without the safety alert symbol indicates a potentially
hazardous situation which, if not avoided, may result in property damage.
Other icons
Electric
Shock.
High
Temperature.
Be sure
to do.
Prohibited
No flame.
Don’t
touch.
Earth
Don’t touch
with a wet
hand.
Don’t
disassemble
the equipment.
DANGER
Vapours from flammable liquids will explode and catch fire causing death or severe burns.
Prohibited
Do not use or store flammable products such as petrol, solvents or
adhesives in the same room or area near the water heater.
Keep flammable products: Vapours:
1. Far away from the water 1. Cannot be seen.
heater.
2. Vapours are heavier than air.
2. In approved containers.
3. Go a long way on the floor.
3. Tightly closed.
4. Can be carried from other rooms
4. Out of children’s reach.
to the main burner by air currents.
Vapours
Hot Water Heater temperatures over 50 °C can cause severe burns instantly or
death from scalding.
Prohibited
2
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.
(Continued)
Operating Instructions
(Continued)
Prohibited
Do not use the water heater
if the exhaust pipe
is displaced,
has holes, is clogged
or is corroded.
Be sure
to do.
Do not allow anyone to change the water
temperature while hot water is being used.
Prohibited
After the water heater has been out of use
for a long time or after replacing the neutralizer 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.)
To prevent scalding, do not change the water temperature to a higher setting.
WARNING
No flame.
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.
Be sure
to do.
Be sure
to do.
Prohibited
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
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.
High
Temperature.
Check the temperature
of the running hot water
before entering the
shower.
Check the temperature
before stepping into
the bath tub.
Prohibited
Do not use combustible chemicals such
as oil, gasoline, benzene etc. in the near
the heater or the exhaust vent terminal.
(Continued)
3
Operating Instructions
Important Safety Information
(Continued)
Prohibited
Do not place the exhaust vent terminal
in an indoor environment by means of
adding walls and ceiling (Do not enclose using corrugated sheets, etc.)
Be sure
to do.
Leave the proper clearance between the
water heater and nearby objects (trees,
timber, boxes with flammable materials etc.).
[When installing outdoors]
Upper:
Min. 30cm
Exhaust vent
terminal
Left side:
Min. 15cm
Right side:
Min. 15cm
Front:
Sug. 60cm*
[When installing indoors]
Min. 5cm
from vent pipe*
Unit
Carbon monoxide poisoning or fire may
occur as a result.
Prohibited
Prohibited
Prohibited
Prohibited
Left side:
Min. 15cm
Front:
Sug. 60cm*
Right side:
Min. 15cm
Carbon Monoxide Poisoning Hazard. Do
not install this water heater in a mobile
home, recreation vehicle or on a boat.
* Indicates suggested clearances for maintenance.
Do not store or use petrol or other
flammable vapors and liquids in the
vicinity of this or any other appliance.
Be sure the gas matches
the gas on the data plate
(inside of frontcover) or
gas type label (right side
of casing).
Do not place or use a spray can
near the water heater or the exhaust
vent terminal.
Be sure
to do.
For NG Gas
NG
Do not place combustibles such as
laundry, newspapers, oils etc. near
the heater or the exhaust vent
terminal. Exhaust vent terminal
(indoor installation)
Unit
Be sure
to do.
Be sure
to do.
Installation and service must be
performed by a qualified installer,
service agency or the gas supplier.
[When installing indoors]
Check the air supply
vent for dust or
obstructions.
air supply
vent
4
(Continued)
Operating Instructions
(Continued)
Prohibited
Prohibited
Prohibited
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.
Do not use hair spray or spray
detergent in the vicinity of the
heater.
Do not touch the power
cord with wet hands.
Don’t touch
with a wet
hand.
Be sure
to do.
Do not allow small children to play
unsupervised in the bathroom.
Do not allow small children to
bathe unsupervised.
Don’t
disassemble
the equipment.
Electric
Shock.
Consult the nearest Bosch agent if
the water heater location needs to
be changed.
Contact a qualified service
technician for any necessary
repairs, service or maintenance.
CAUTION
Be sure to electrically ground the
unit.
Prohibited
Ground.
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.
Keep power cord free of dust.
Be sure
to do.
Prohibited
Do not use the water heater for
other than its intended use.
Prohibited
Prohibited
Be sure
to do.
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.
Don’t
touch.
To prevent burns or scalding, turn
off the power button and wait until
the equipment cools before performing maintenance.
Do not turn off the water heater
while someone is shawering.
Prohibited
Do not install in locations where
excessive dust or debris will be
in the air.
Do not touch the exhaust vent pipe
and exhaust vent terminal during
or immediately after operation of
the water heater.
Do not use condensate, discharged
from the drain pipe, for drinking or
for consumption by animals.
Prohibited
5
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.
Do not disassemble the remote controller.
Do not use petrol, oil or fat detergents to
clean the remote controller.
This may cause deformation.
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.
Treat hard, acidic or otherwise impure
supply water with approved methods to
ensure full warranty coverage.
Problems resulting from scale formation
are not covered by the warranty.
Check ignition during use and extinction
after use.
If it is snowing, check the air inlet, exhaust
gas vent and exhaust vent terminal for
blockage.
6
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.
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.
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.
Operating Instructions
Contents
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
7
Operating Instructions
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.
Conventional
type
Condensing
Continuous Flow
Gas Water Heater
Exhaust
About 200°C
Exhaust
About 50°C
Water is heated
using the exhaust
gas which is about
200°C.
Secondary heat exchanger
Combustion gas
About 200°C
Combustion gas
About 200°C
First heat exchanger
First heat exchanger
Neutralizer
Condensate
Hot water
Gas
Cold water
Hot water
Gas
Cold water
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.
8
During combustion, white
steam may often be seen.
This is normal.
Operating Instructions
General Parts
Main Unit
Exhaust vent pipe
Front Cover
Burner On Indicator
Lit during combustion.
Blinks to indicate a problem.
( P35)
Air inlet
Water Drain Valve
(with Water Filter)
(Inside Water Inlet)
( P31)
Water Supply Valve
Gas Supply Valve
Drain Pipe
Discharges the condensate.
· The above illustration shows an example of installation.
The exact installation configuration may be slightly different.
9
Operating Instructions
Names and Functions of Controllers
Main Remote Controller (RCM3211) <Optional>
Power On/Off Button
For turning the heater on
and off.
Display
(
This page)
Set Button
For other settings.
Speaker
Selection Button
• Used to adjust the
temperature. ( P14)
• Used for other settings.
• Details are memorized
upon adjustment or setting.
Display
The illustration below shows the remote controller display. What is actually displayed depends
on how the water heater is set.
Time Display
(Eg.: 10:15)
Error Display
Error is displayed when
malfunction occurs.
( P35)
High Temperature Display
When the hot water temperature is set between
60~80°C, “hi-temp” blinks
for 10 seconds.
Selection Bar Display
Selection switches that can
be operated are indicated
by the bar display lighting
up or blinking.
Burner On Display
This is displayed during
burner on.
Temperature Setting
(Eg.: 40°C)
< Scroll display > to prevent the remote controller screen from burning out
· 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 temperature scroll sideways.
10
Operating Instructions
Waterproof Sub Remote Controller (RCS3211) <Optional>
Power On/Off Button
Priority
Burner on
For turning the heater on
and off.
Temperature setting
Button
Display
(
Used to adjust the
temperature. ( P22)
This page)
Display
The illustration below shows the remote controller display. What is actually displayed depends
on how the water heater is set.
Priority Indicator
When this indicator is lit, the
hot water temperature can
be set.
Priority
Burner on
Burner On Indicator
This is displayed during
burner on.
Temperature Setting
(Eg.: 40°C)
Error Display
Error is displayed when a
malfunction occurs.
( P35)
Note: Avoid frequent interruptions to the power supply.
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.
11
Operating Instructions
Initial Operation
Before the first use of your water heater, make the following preparations.
Follow steps
1
1 through 4.
Open the water supply valve.
OPEN
CLOSED
On this Display
2
Operation
Open a hot water fixture to confirm that
water is available, and then close the
fixture again.
Hot water fixture
12
3
Open the gas supply valve.
4
Turn on the power.
Description
Operating Instructions
When using RCM3211
Running Hot Water
On this Display
1
Operation
Press the
Description
* The ON/OFF
is lit.
ON/OFF
button to turn it
“On”.
2
Check
Previous set temperature
(Eg.: 40°C)
WARNING
Turn on hot water.
* This is lit during combustion.
Here
(Display example)
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.
WARNING
When the user is taking the shower, it will be dangerous if someone else presses the sub remote controller to change the temperature or to turn off the power switch.
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.
13
Operating Instructions
When using RCM3211
Setting Hot Water Temperature
On this Display
1
Operation
Press the
Description
* The ON/OFF
is lit.
ON/OFF
button to turn it
“On”.
2
Use the
Here
(Eg.: 40°C)
WARNING
buttons to adjust
the temperature.
When the user is taking the shower, it will be dangerous if someone else presses the sub remote controller to change the temperature or to turn off the power switch.
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.
14
Operating Instructions
Approximate
hot water conditions
On this Display
Operation
Description
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. (
Washing
dishes, etc.
Shower, hot water supply, etc.
Hot water supply, etc.
P18 and 19)
High temperature
• 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);
• 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.
Here
(Eg.: 60°C)
Flashing
Temperature
Display for about
10 seconds to
Temperature on.
Please switch to the priority setting if the temperature
cannot be adjusted (when an additional remote controller is attached).
• 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.
Here
Here
(Eg.: 40°C)
15
Operating Instructions
When using RCM3211
Filling Up the Bath
On this Display
Preparation
Operation
Description
Insert the bathplug into the plughole.
1
Press the
ON/OFF
* The ON/OFF
is lit.
button
to turn it “On”.
2
Check
(Display example)
3
* Please set to the
required temperature
when using
thermostat controlled
water mixing valves.
the highest
temperature
When the bath is full,
turn off the taps.
WARNING
To prevent scalding.
16
Turn on hot water.
Check the bathwater temperature with your hand before getting into the bath.
Operating Instructions
When using RCM3211
Clock Adjustment
On this Display
1
Operation
Press the
Description
* The ON/OFF
is lit.
ON/OFF
button to turn it
“On”.
2
Press the SET
(Eg.: 40°C)
3
button to change the
display until “time
set” is shown.
Use the
buttons
to adjust the clock.
< Completion of setting >
(Eg.: AM 10:15)
* 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.
* When the SET button is pressed,
or the console is left untouched for
about 20 seconds, the settings
screen ends.
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.
17
Operating Instructions
When using RCM3211
Other Setting Options
On this Display
Switching
scroll display
Scroll display ( P10) can be
switched “yes” or “no”.
Draining the unit
This is set to drain the unit. (
On this
Display
Operation
Description
[Draining the unit]
[Maximum temperature setting]
1
2
[Scroll display]
3
yes
(
(
P10)
(
80°C
yes
Condition is suitable
for draining the unit.
( P27)
P15)
75°C
(in 5°C increments)
-
Scroll display is
turned on.
P27)
50°C
no
Stops draining
the unit.
= Initial setting < factory setting >
18
48°C
(in 1°C increments)
-
Scroll display is
turned off.
no
40°C
P27)
Operating Instructions
Modification of the
maximum temperature
setting
The maximum temperature setting can be
modified.
On this Display
On this Display
Operation
Operation
Description
q Press the ON/OFF
button to “OFF”.
w Press the SET button
to show the settings screen.
Press the SET button
* This may not be displayed
depending on the
installation conditions.
to select the setting to be
Power is switched
“Off” again.
modified.
(Setting changes each time the
button is pressed.)
19
Operating Instructions
When using RCM3211
Confirmation Beeper 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.
Operation
1
20
Press the ON/OFF
Description
button for about five
seconds. < Completion of setting >
* Setting is possible regardless
of whether the power switch is
ON/OFF.
Operating Instructions
When using RCS3211
Running Hot Water
Priority
Burner on
On this Display
1
Priority
Burner on
Operation
Press the
Description
* Hot water supply temperature
is displayed.
button to turn it
“On”.
2
Check
Priority
Burner on
Previous set temperature
(Eg.: 40°C)
WARNING
Turn on hot water.
* This is lit during combustion.
< Display details >
Here
Priority
Burner on
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.
WARNING
While the shower is being used, no one other than the user
should change the temperature, the power switch must not be
turned “off”, when using sub remote controller.
This is to prevent scalding if the temperature rises. Conversely, if the temperature reduces or the
power switch is turned “off”, the user may be upset when the water suddenly becomes much colder.
21
Operating Instructions
When using RCS3211
Setting Hot Water Temperature
Priority
Burner on
On this Display
1
Operation
Press the
Priority
Burner on
Description
* Hot water supply temperature
is displayed.
button to turn it
“On”.
2
Priority
Burner on
(Eg.: 40°C)
WARNING
Use the
buttons to adjust the
temperature.
While the shower is being used, no one other than the user
should change the temperature, the power switch must not be
turned “off”, when using sub remote controller.
This is to prevent scalding if the temperature rises. Conversely, if the temperature reduces or the
power switch is turned “off”, the user may be upset when the water suddenly becomes much colder.
22
Operating Instructions
Approximate hot water conditions
37 38 39 40 41 42 43 44 45 46 47 48 50 55 60 65 70 75 80
Upper limit (maximum temperature) for temperature adjustment can be set using the remote controller RCM3211.
Washing
dishes, etc.
Shower, hot water supply, etc.
Hot water supply, etc.
P18 and 19
High temperature
• 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);
When setting high temperatures (60 - 80°C);
• 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.
Priority
Burner on
Here
(Eg.: 60°C)
Temperature
display flashes for
about 10 seconds
to indicate high
temperature.
Please switch to the priority setting if the temperature
cannot be adjusted.
• 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 to
“off”, and then turn it “on” again.
Here
Priority
Burner on
(Eg.: 40°C)
23
Operating Instructions
When using RCS3211
Confirmation Beeper 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.
Priority
Burner on
Operation
1
Press the
button for about five seconds.
< Completion of setting >
24
Description
* Setting is possible regardless
of whether the power switch is
ON/OFF.
Operating Instructions
No remote controller
Running Hot Water
The water temperature will be set at 55°C (BC3200RA5 will be set at 50°C).
Whenever using hot water, such as when using the
shower, first test the hot water temperature by hand.
WARNING
To prevent scalding.
Operation
1
2
3
Description
Turn on hot water.
Temperature
adjustment for
hot water supply
Turn off the hot water tap after use.
Contact your installer if you wish to change the temperature.
If the temperature is set at 75°C - 85°C, use thermostat-controlled water mixing valves to prevent
scalding when using other taps.
25
Operating Instructions
Preventing Damage from Freezing
The heater and piping can be damaged if cold temperatures cause water to freeze inside the
unit. The damage can be prevented using following method:
Normal cold [outside temperatures between 0°C - 10°C with no wind]
At these temperatures, the units have freeze prevention heaters that will prevent freezing.
* Do not disconnect the power. The freeze prevention heaters will not work if the power
is disconnected.
* The freeze prevention will work regardless of whether the operation button on the remote
controller has been turned on.
When the temperature drops, the freezeprevention heaters are automatically
activated to keep the unit warm and
prevent it from freezing.
The freeze prevention heaters will not prevent
the plumbing external to the unit from freezing.
Protect this plumbing with insulation. If you are
still worried that your heater will freeze, contact
the nearest Bosch Service Dealer.
If water will not flow because it is frozen
1. Close the gas and water valves.
2. Turn off the operation button.
3. Open the water supply valve from time to time to check whether water is running.
4. When the water is flowing again, check for water leaks from the equipment and piping, or
follow steps 1 through 4 on P12 (“Initial Operation”).
• If the heater or the piping is frozen, do not use the heater, or it may become damaged.
• Repairs for damage caused by freezing, is not covered by the warranty.
26
Operating Instructions
When Unused for an Extended Period
If the water heater will not be used for a long period of time,
drain the water.
Whenever the unit is checked, maintained, or drained, the power
switch must be turned “Off”, and it must be allowed to cool down first.
CAUTION
To prevent scalding.
The water within the appliance is still very hot , for a short period after use.
Preparation
A bucket for draining water.
Drainage using the remote controller RCM3211
1
Follow the procedure on Pgs. 18 - 19,
and set “Drain the heater” to “yes”.
Here
Displayed
for 10
minutes.
2
3
4
Close the water
supply valve.
5
6
When the water is completely drained,
replace all drain plugs and close the hot
water fixtures.
Fully open all hot
water fixtures.
1
2
Fixture
Open all cleanout plugs by turning
them to the left.
(Position of the cleanout plugs P28)
* Draining starts.
Close the gas valve.
Manual draining
3
4
5
6
Close the gas
valve.
1. Turn the power switch “On”.
(If there is no remote controller, make
sure that the power is plugged in.)
2. Open the hot water tap
fully, leave it in that Fixture
position for at least one
minute, and then turn
off the tap.
* For conjunct setting: Allow at least one
minute per unit
* Error display <11> may appear on the
remote controller, but this is not an error.
Do not turn the power switch “Off”.
Close the water
supply valve.
Fully open all hot
water fixtures.
Fixture
Open all cleanout plugs by turning
them to the left.
(Position of the cleanout plugs P28)
* Draining starts.
When the water is completely drained, replace all
drain plugs and close the hot water fixtures.
(Continued)
27
Operating Instructions
When Unused for an Extended Period
If the water heater will not be used for a long period of time,
Drain the water-2.
Position of the drain plugs
5 positions
* The shapes of the drain plugs are as on the right.
* The drain plugs may not be clearly visible as they are partially hidden
behind the pipe insulation.
* Water may not drain out fully even though the drain plugs are loosened,
depending on the pipe arrangement. In this case, fully remove the drain
plugs. (Make sure not to mislay them.)
Turning the Unit Back On
1. Check that all drain plugs are inserted.
2. Check that all hot water fixtures are closed.
3. Follow the procedure on P12 “Initial operation”, steps 1 through 4.
4. Make sure that the area around the appliance is well ventilated; open a window or a door if necessary.
Then, operate the unit and verify that condensate is coming out of the drain pipe.
(During normal use of the water heater, condensate will begin to discharge from the drain pipe within 15
minutes of use. However, depending on the season and/or installation site conditions, it may take longer.)
* If water does not appear at the end of the drain line, a qualified service technician must clean the
condensate line.
DANGER
Be sure to do.
28
After the water heater has been out of use for a long time or after replacing the
neutralizer 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.
Failure to fill the neutralizer unit could result in severe personal injury or death.
(By performing step 4 as described above, the neutralizer unit will automatically fill itself with water.)
Operating Instructions
Regular Maintenance
CAUTION
Whenever the unit is checked, maintained, or drained, the power switch
must be turned “Off”, and it must be allowed to cool down first.
To prevent scalding.
The water within the unit is still very hot within a short period of time after use.
Inspection (to be performed periodically)
Make sure that no combustible material
(such as paper, washing, benzene,
spray can) is placed on or near the unit
or exhaust vent and flue terminal.
CHECK
Do not place combustibles on or around the
unit or the flue terminal.
CHECK
* Is there any abnormality in external
appearance discoloration or flaws?
* Is there abnormal
sound during operation?
* Is there any water
leak from the appliance and pipes?
CHECK
Make sure that no black
soot covered in the flue
terminal and exhaust vent.
If any is found, please contact
Bosch agent.
CHECK
Make sure that the
exhaust vent or flue
terminal and air inlet
is not blocked by dust.
If so, please clean it.
If any of the above is found,
please contact Bosch
agent.
CHECK
For blockage at the
drain pipe discharge.
29
Operating Instructions
Regular Maintenance
Cleaning (to be performed periodically)
Main Unit
• For soiling on the unit exterior, wipe with a wet cloth and dry thoroughly.
For stubborn dirt, use neutral detergent.
• If the unit is installed in a seaside area and is subject to sea breezes, the main unit and connecting
pipes may rust. Rust inside the appliance will affect adversely its operation,so a check-up is
recommended.
Remote Controller
For soiling on the surface of the remote controller, use a damp cloth.
CAUTION
Do not use petrol, oil or fat detergents to clean the remote controller.
This may cause deformation.
CAUTION
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.
30
Operating Instructions
Cleaning filter of the drain plug
If the water drain valve (with water filter) is covered with debris, the hot water may not run
smoothly, or the unit may put out cold water. Check and clean the filter as explained below.
• To avoid burns, wait until the equipment cools down before draining the water.
The appliance will remain hot after it is turned off.
• Drain water into a bucket.
1. Close the water supply
valve.
Filter
O-ring
2. Open all hot water tap.
hot water tap
3. Remove the drain plug. (Note 1)
4. Wash the filter area in water using a
toothbrush. (Note 2)
drain plug
Water supply valve
5. Reinsert the drain plug as before.
6. Close all hot water taps.
7. Open the water supply valve and check
that water does not leak from the drain
plugs or water drain valve.
(Note 1) Cold (or hot) water is discharged at this stage.
(Note 2) If the filter is removed from the drain plug, take care not to lose the O-ring
between the drain plug and the filter.
Regular check-ups are recommended.
Even if there is no apparent problem with usage, a regular check-up is recommended about once
a year to ensure safe long-term use. Please contact Bosch agent for details.
31
Operating Instructions
Troubleshooting
Problems concerning temperature
32
No hot water is supplied
even though the hot
water tap is turned on
(open).
•
•
•
•
No hot (or cold) water is
supplied even though
the hot water tap is
turned on (open).
• Has the water supply been shut down?
No hot water is supplied
at the set temperature.
• Is the hot water supply tap fully opened?
The warm water is too
hot.
• Are the gas valve and water supply tap fully opened?
• When a remote controller is installed, is the temperature setting
correct? ( P15, 23)
• If the ambient water temperature is high, when a low temperature
setting is used, the supplied water temperature may be higher than
the set temperature.
• If using small amounts of hot water, the water may be hotter than
the set temperature.
The hot water outlet
temperature is lower than
the set temperature.
• Are the gas valve and water supply tap fully opened?
• In case there is a remote controller, check if the temperature setting
correct? ( P15, 23)
• When the water temperature is low, set temperature may not be
discharged when discharging large amounts of warm water.
For the discharge of water at the set temperature, lower the volume
of water discharge by partially closing the water supply tap.
Water becomes cold
when the tap is nearly
shut.
• Burner is extinguished when the flow of water from the hot water
supply tap becomes 2.0 liters of less per minute.
For stable temperature of water, increase the volume of water
discharge by further opening the water supply tap.
< If there is an additional remote controller… >
Cannot set water temperature
• Does the remote controller being used have priority? (
Are the gas valve and water supply tap fully open?
Has the water supply been shut down?
Is the hot water supply tap fully opened?
Has the gas meter (microcomputer meter) shut off the gas? (Can you
use any other gas-powered equipment, such as your gas cooker?)
• Is the drain plug filter clogged? ( P31)
• Is the power turned “On”?
P15, 23)
Operating Instructions
Problems concerning volume of hot water
The volume of hot water
discharged from the hot
water tap varies
• When using hot water, the volume discharged may decrease when hot
water is used somewhere else. Also depending on the pressure of the
water line and the piping conditions, the volume of hot water discharged
may drastically decrease or even stop. In this, the volume of hot water
discharged will become stable again after waiting some time.
• There are some types of hot water taps that discharges large
volumes of hot water at first but stabilizes after time.
• In order to stabilize the temperature of hot water, the unit controls
the volume of hot water by discharging little at first and discharging
fully when the temperature becomes stable.
Poor supply of hot water
• Are the filters at the drain plugs clogged? (
P31)
Problems concerning the remote controls
The power lamp is not lit.
• Has the power been cut?
Clock shows “0:00”.
• If the power is disconnected for any reason, when the power is
reconnected, the clock on the display screen shows “0:00”,
indicating that it needs to be reset. ( P17)
After the power is cut,
the hot water supply
temperature is different.
• If using the remote controller RCS3211, the hot water temperature
display reverts to the factory setting, so please check it.
The display on the
remote controller
moves continuously.
• In order to prevent the screen from burning out, after the remote
controller has not been used for about 10 minutes, the screen
display changes, and continuously scrolls sideways. ( P10,18-19)
Temperature setting
cannot be increased.
• Has the maximum temperature setting been changed? (
P18-19)
33
Operating Instructions
Troubleshooting
Problems concerning sound
Even after use has finished, • The sound is from the unit operating for fast ignition and quicker
the whirring of a fan can be
stabilization of water temperature during reuse.
heard for a while.
Whenever the power switch
is turned “On” or “Off”, a
hot water tap is opened or
closed, or after the unit is
used, the sound of a motor
spinning may be heard.
Others
34
Burner is extinguished
during use
•
•
•
•
Are the gas valve and water supply tap fully opened?
Has the water supply been shut down?
Is the hot water tap opened sufficiently?
Is there a cut-off of gas by the gas meter?
(Can any other gas-powered equipment, such as a cooker, be used?)
White vapor is emitted from
the exhaust vent or flue
terminal on cold days.
• The combustion gas which had been collected heat at the secondary
heat exchanger is low-temperature and has high moisture content,
so it builds up condensation with the outside air and looks like white
steam.
Hot water seems cloudy
• This is simply air that had been dissolved in the water being forced out
in the form of minute bubbles when heated, and is totally harmless.
Water is discharged momentarily from the trap
plug of the unit (pressure
relief device)
• When there is high pressure within the unit, the pressure relief
device will operate and droplets of water may be noticed from the
trap plug.
Water seems bluish
The bath tub or wash basin turned blue
• Your bathtub and washbasin may look slightly bluish due to minute
amounts of cuprous ions and fat (lime scale), but this poses no
problem to your health. This can be prevented by frequent cleaning
of the bathtub and washbasin.
Frequent water discharge
from the drain pipe.
• Condensation forms inside the unit during operation
and is discharged from the drain pipe.
Operating Instructions
Please check the failure display on the remote controller or
the combustion lamp on the main body.
[Remote controller]
In the event of a failure, the cause is
notified by a blinking failure display.
Please resolve the problem in
accordance with the table below.
Failure display blinks
(This display is an example.)
(if using RCM3211)
(if using RCS3211)
Display
Description
Remedy
*(F) 11
Ignition failure
Check whether the gas supply is off.
Reset by turning off and on the power on/off button of
remote controller.
It turns back to normal when no error displays after running
hot water.
If the error still persists, call service.
*(F) 29
Clogging of neutralizer
*(F) 90
Combustion Abnormality
Reset by turning off and on the main power.
(burner sensor detects high temperature) If the error still persists, call service.
*(F) 92
The neutralizer needs to be
replaced soon.
Call service.
*(F) 99
Combustion Abnormality
(appliance shuts down)
Reset by turning off and on the main power.
If the error still persists, call service.
Call service.
*(F) ## indicates an error code from the secondary unit in a quick connect (2-unit) pack.
[Combustion lamp]
In the event of a failure, you are notified by the combustion lamp blinking at the front of the unit.
Please resolve the problem in accordance with the table below.
Combustion lamp
Details of Failure
Remedy
Continuously blinking
• Fault occurs with the unit.
Make sure that the gas valve is open.
Close the hot water tap, then reopen it, and
it is back to normal if the combustion lamp is
no longer lit.
Lit
Unlit
35
Operating Instructions
Follow-up Service
Requesting Service
First follow the instructions in the troubleshooting section ( P32 to P35).
If the error is not corrected, contact Bosch Service Department at 1300-30-70-37.
We will need to know:
The Model ................ BC3200RA or BC3200RA5
(Check the rating plate)
Date of purchase ..... (see the warranty)
Details of problem ... (flashing error codes,
etc., in much detail as possible)
Your name, address, and telephone number
Desired date of visit
Warranty
For repairs after the warranty period, there will be a charge on any service, and service will only
be performed if the unit is deemed repairable.
See warranty Document on page 40.
Period of Time for Stocking Repair Parts
Bosch will stock repair and maintenance parts for this unit as required for a reasonable time the
date of original manufacture.
Reinstallation
If you want to reinstall the appliance at a different location, confirm that the gas and power
supply indicated on the data plate are available at the new location. If you are not sure, consult
the local utility company.
If you move to a region that uses a different type of gas, conversion and adjustment of the
appliance will be necessary.
36
Operating Instructions
Specifications
• Specifications may be changed without prior notice.
• The capacity may differ slightly, depending on the water
pressure, water supply, piping conditions, and water temperature.
Specifications
Specification
Item
Model Name
Approval certification number
Type
BC3200RA / BC3200RA5
AGA 6743 G
Installation
Air Supply/Exhaust
Ignition
Operating Pressure
Minimum Flow Rate
Dimensions
Weight
Water Holding Capacity
Connection Sizes Water Inlet
Hot Water Outlet
Gas Inlet
Water Outlet (Drain water)
Power Supply
Supply
Consumption
Relief valve pressure setting
Casing
Materials
Flue Collar
Primary Heat Exchanger
Secondary Heat Exchanger
Safety Devices
Accessories
Indoor / Outdoor, Wall Mounted
Power Flue
Direct Ignition
200 -1,000 kPa
2.5 L/min.
615mm (Height) x 464mm (Width) x 240mm (Depth)
33 kg
1.9 L
R 3/4 (20mm)
R 3/4 (20mm)
R 3/4 (20mm)
R 1/2 (15mm)
230 / 240 VAC (50Hz)
126W
Freeze Prevention 175W
1,600 kPa
Zincified Steel Plate/Polyester Coating
Stainless Steel
Copper Sheeting, Copper Tubing
Stainless Steel Sheeting, Stainless Steel Tubing
Flame Rod, Thermal Fuse, Pressure Relief Valve,
Electric Leakage Prevention Device,
Lightning Protection Device (ZNR),
Overheat Prevention Device, Freezing Prevention Device,
Fan Rotation Detector
Anchoring Screws
Performance
Item
Gas
Consumption
NG
LP
Maximum Performance
Minimum Performance
217 MJ/hr
217 MJ/hr
11 MJ/hr
11 MJ/hr
Maximum Hot Water Capacity 25°C Rise
Capacity Range
Temperature Settings
32 L/min.
2.5 - 42 L/min.
BC3200RA
37 - 48°C (In 1°C intervals),
50, 55, 60, 65, 70, 75, 80°C (19 Options)
BC3200RA5 37 - 48°C (In 1°C intervals), 50°C (13 Options)
37
Operating Instructions
WATER QUALITY
All Bosch water heating appliances are constructed from high quality materials and
components and all are certified for compliance with relevant parts of Australian and
New Zealand gas, electrical and water standards.
Whilst Bosch water heaters are warranted against defects, the warranty is conditional
upon correct installation and use, in accordance with detailed instructions provided
with the heater. In the case of the water supplied to the heater, it is important that the
water quality be of acceptable standard.
The water quality limits/parameters listed in water quality table are considered
acceptable and generally, Australian and New Zealand suburban water supplies fall
within these limits/parameters.
In areas of Australia and New Zealand where water may be supplied, either fully or
partly, from bores, artesian wells or similar, one or more of the important limits may well
be exceeded and the heater could, therefore, be at risk of failure.
Where uncertainty exists concerning water quality, intending appliance users should
seek a water analysis from the water supplying authority and in cases where it is
established that the water supply does not meet the quality requirements of the water
quality table, the Bosch warranty would not apply.
WATER QUALITY TABLE
Maximum levels
pH
Saturation
Total
Index(LSI)
Hardness
Chlorides
Sodium
Iron
250mg/l
180mg/l
1mg/l
(langelier)
6.5-9
+0.4 to
Minus 1.0
@65C
38
200mg/l
Operating Instructions
Robert Bosch (Australia) Pty Ltd (Bosch)
Manufacturer’s Warranty
(Applicable for purchases from 1 January 2012)
All Bosch hot water units are carefully checked, tested and subject to stringent quality controls.
1. Warranty
Bosch offers, at its option, to repair or exchange this Bosch hot water unit or the relevant part
listed in clause 2 below at no charge, if it becomes faulty or defective in manufacture or materials
during the warranty period also stated in clause 2. This warranty is offered in addition to any
other rights or remedies held by a consumer at law.
2. Warranty periods & coverage
(a) Domestic applications: 3 years (parts and labour)
(b) Heat exchangers used in domestic applications: 10 years (part only)
(c) Commercial applications: 2 years (parts and labour)
(d) Heat exchangers used in commercial applications: 5 years (part only)
All warranty periods commence on the date of purchase of the hot water unit by the end-user.
However, where the date of purchase by the end-user is more than 24 months after the date of
manufacture, all warranty periods will automatically commence 24 months after the date of
manufacture.
3. Warranty exclusions
This warranty is VOID if any damage to or failure of the hot water unit is caused wholly or partly
by:
(a) faulty installation
(b) neglect, misuse, accidental or non-accidental damage, failure to follow instructions
(c) use of the unit for purposes other than which it was designed or approved
(d) unauthorised repairs or alterations to the unit without Bosch’s consent
(e) use of unauthorised parts and accessories without Bosch’s consent
(f) use of non-potable water or bore water in the hot water unit (see product instructions for
further details)
(g) continued use after a fault becomes known or apparent.
This warranty DOES NOT include:
(a) costs of consumables or accessories
(b) wear and tear, normal or scheduled maintenance
(c) to the extent permitted by law, any damage to property, personal injury, direct or indirect loss,
consequential losses or other expenses
(d) changes in the condition or operational qualities of the hot water unit due to incorrect storage
or mounting or due to climatic, environmental or other influences.
NOTE: Any service call costs incurred by the owner or user of the hot water unit for any matter
not covered by the terms of this warranty will not be reimbursed by Bosch, even if those costs are
incurred during the warranty period. If the hot water unit is located outside the usual operating
area of a Bosch service agent, the agent’s travel, freight or similar costs are not covered by this
warranty and must be paid by the owner or user of the hot water unit.
4. Warranty conditions
(a) Proof of purchase may be required.
(b) The hot water unit must be installed by an authorised and licensed installer.
(c) Proof may be required of the date of installation and correct commissioning of the hot water
unit has been carried out to Bosch’s satisfaction (such as a certificate of compliance).
(d) Repair or replacement of the hot water unit or any parts under this warranty does not
lengthen or renew the warranty period.
39
Operating Instructions
(e) This warranty is not transferable and is only offered to the original purchaser of the hot water
unit.
(f) No employee or agent of Bosch is authorised to amend the terms of this warranty.
(g) This warranty only applies to Bosch hot water units purchased from an authorised reseller
and installed in Australia or New Zealand.
(h) To the extent that any condition or warranty implied by law is excludable, such condition or
warranty is excluded.
5. How to lodge a warranty claim and warranty procedure
(a) Warranty claims must be made with the Bosch Customer Contact Centre (Australia: ph 1300
307 037; New Zealand: ph 0800 543 352). Please be ready to provide the model and serial
numbers, date of installation, purchase details and a full description of the problem.
Warranty claims must be made before the end of the warranty period.
(b) All warranty service calls must conducted by an authorised Bosch service agent.
(c) Invoices for attendance and repair of a hot water unit by third parties not authorised by Bosch
will not be accepted for payment by Bosch.
6. Privacy Act 1988 (Cth)
A customer's personal information collected during warranty claims may be used for the
provision of customer support, for the provision of information about products and services and
for other marketing activities undertaken by Bosch and its Bosch Service Agents who are
authorised to carry out warranty repairs on behalf of Bosch (Purpose). Bosch is committed to
protecting the privacy of its customers' personal information. It will act in compliance with
the National Privacy Principles and Privacy Act 1988 (Cth). Bosch will not forward customers'
personal information to third parties other than for the Purpose. A customer can object at any
time to the use of their personal information for the Purpose. Bosch will cease to use a
customer's personal information accordingly if an objection is made.
7. Bosch contact details
If you have any questions about this warranty or to lodge a warranty claim, please contact:
Robert Bosch (Australia) Pty Ltd
1555 Centre Road, Clayton, Victoria 3168
Tel: Australia: 1300 307 037
Tel: New Zealand: 0800 543 352
IMPORTANT NOTE FOR AUSTRALIAN CONSUMERS
Our goods come with guarantees that cannot be excluded under the Australian Consumer Law.
You are entitled to a replacement or refund for a major failure and for compensation for any other
reasonably foreseeable loss or damage. You are also entitled to have the goods repaired or
replaced if the goods fail to be of acceptable quality and the failure does not amount to a major
failure.
40