Thermann TH50ECS Series User manual

OWNER’S
GUIDE
Gas Continuous Flow Water Heaters
Owner’s information
Warranty
SBB81G0-1
Rev. 05/22
Models
TH50ECS Series
TH50FCS Series
TH32ECS Series
TH32FCS Series
TH28ENS Series
TH28FNS Series

Thermann Owner’s Guide
Gas Continuous Flow Water Heaters
2
Thank you for purchasing this THERMANN Commercial Gas Water Heater.
Before using, please:
Read this manual completely for operating instructions.
Confirm warranty and proof of purchase.
Keep this manual where it can be found whenever necessary.
Installation must conform with Plumbing Code of Australia (PCA) and local codes, or in the absence of local
codes, AS/NZS 5601, AS/NZS 3500.4, AS/NZS 3000 wiring regulations and all Local Building, Water and Gas fitting
regulations.
Reece reserves the right to discontinue, or change at any time, the designs and/or specifications of its products
without notice.
This appliance delivers water in excess of 50 Degrees C. Ensure that suitable devices such as Tempering
Valves are installed in lines servicing Sanitation areas per AS 3500.4.
* 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 recommend installation of THERMANN optional temperature controllers.
(For TH50ECS and TH50FCS Series, the temperature controller is supplied with appliance.)
FOR CONTINUED SAFETY OF THIS APPLIANCE IT MUST BE INSTALLED, OPERATED AND MAINTAINED IN
ACCORDANCE WITH THE MANUFACTURER’S INSTRUCTIONS.
WARNING

3
Important Safety Information
• 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 the appliance.
- Do not touch any electrical switches; Do not use electrical appliances, including the phone” inside the
building.
- Immediately call your gas supplier, from a safe distance from the gas leak.
• DO NOT SPRAY AEROSOLS IN THE VICINITY OF THIS APPLIANCE WHILE IT IS IN OPERATION.
• DO NOT PLACE ARTICLES ON OR AGAINST THIS APPLIANCE.
• DO NOT MODIFY THIS APPLIANCE.
• This appliance is not intended for use by persons (including children) with reduced physical, sensory or
mental capabilities, or lack of experience and knowledge, unless they have been given supervision or
instruction concerning use of the appliance by a person responsible for their safety.
• To prevent injury or death, do not allow small children to bathe or play in the bathroom unsupervised.
• This appliance is not suitable for use as a pool heater.
• DO NOT USE OR STORE FLAMMABLE MATERIALS IN OR NEAR THIS APPLIANCE.
• Installation and service must be performed by a qualified installer, service agency or the 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 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 Indicates an imminently hazardous situation which, if not avoided, will result in
death or serious injury.
WARNING
I ndicates 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
NOTICE Indicates a potentially hazardous situation which, if not avoided, may result in
property damage.

Thermann Owner’s Guide
Gas Continuous Flow Water Heaters
4
WARNING
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.
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.
DANGER
Flammable Vapours
When a gas leak is noticed:
1. Stop use immediately.
2. Close the gas valve.
3. [For TH50FCS, TH32FCS and TH28FNS
Series]
Open windows and doors.
4. Contact your gas supplier immediately.
If you detect abnormal combustion or
abnormal odours, 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 valves.
4. Call Contact Customer Service on 1300 412
612 (in Australia) or 0800 081 909 (in New
Zealand).
Hot water 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.
[For TH50FCS and TH32FCS Series]
Do not use the Water Heater if the intake/
exhaust pipe is displaced, has holes, is
clogged or is corroded.
[When supplying combustion air from
the indoors]
Check whether or not the air intake grill is
blocked with dust, trash, a towel, or the like.
Blocking the opening may result in incomplete
combustion.
[For TH50ECS, TH32ECS and TH28ENS Series]
Do Not Install Indoors.
This will cause carbon monoxide poisoning
and a potential fire hazard.
[For TH28FNS Series]
Do not use the Water Heater if the
concentric pipe is displaced, has holes, is
clogged or is corroded.
[For TH50FCS and TH32FCS Series]
After the Water Heater has been out of use
for a long time make sure that you fill the
condensate trap with water.
This is to prevent dangerous exhaust gases
from entering the building.
Failure to fill the condensate trap could
result in severe personal injury or death.
(Refer to page 32 for further instructions.)

5
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. BEFORE OPERATING smell all around the
Water Heater area for evidence of leaking
gas. Be sure to smell next to the floor
because some gas is heavier than air and
will settle on the floor.
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.
Follow the gas supplier’s instructions.
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.
Check the temperature of the running hot
water before entering the shower.
Check the temperature before stepping into
the bath.
Do not place the Water Heater (for outdoor
installation) or the flue terminal (for indoor
installation) in an indoor environment by
means of adding walls and ceiling (Do not
enclose using corrugated sheets, etc.).
Carbon monoxide poisoning or fire may occur
as a result.
[For TH50FCS, TH32FCS and TH28FNS Series
Series]
Do not place outdoors.
Rain may enter the Water Heater or the
burner fire may be blown by the wind, causing
malfunction or fire as a result.
WARNING
Do not install this Water Heater in a mobile
home, recreational vehicle or on a boat as
this may be a Carbon Monoxide Poisoning
Hazard.
Do not place combustibles such as laundry,
newspapers, oils etc. near the Water Heater
or the flue terminal.
Do not use combustible chemicals such
as oil, petrol, benzene etc. in the near the
Water Heater or the exhaust vent.
Do not store or use petrol or other
flammable vapours and liquids in the vicinity
of this or any other appliance.
Do not place or use a spray can near the
Water Heater or the exhaust vent.
Do not use hair spray or spray detergent in
the vicinity of the Water Heater.
Be sure the gas/power
supplied matches “Type of
Gas” and “Electrical Rating” on
the rating plate.
Installation and service must be performed
by a qualified installer, service agency or the
gas supplier.
Do not install in locations where excessive
dust or debris will be in the air.
Do not touch the power cord with
wet hands.
xx
xxxxxxxx
xx
xx xx
xx
(e.g. For Natural Gas)

Thermann Owner’s Guide
Gas Continuous Flow Water Heaters
6
Be sure to electrically earth the appliance.
Keep power cord free of dust.
Do not replace a remote controller cord
without notice.
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. If the supply cord is
damaged, it must be replaced by the
manufacturer, its service agent or similarly
qualified persons in order to avoid a hazard.
CAUTION
Do not use the Water Heater for other than
hot water supply, shower and bath.
Do not turn off the Water Heater while
someone is bathing.
Do not cover the Water Heater and the flue
terminal, store trash or debris near it, or in
any way block the flow of fresh air to the
appliance.
Do not use condensate, discharged from the
condensate drain pipe, for drinking or for
consumption by animals.
WARNING
If the appliance delivers water in excess of
50°C [models TH50E/FCS, TH32E/FCS and
TH28E/FNS Series (except for 50°C locked
model)], the following warning must be
adhered to:
THIS APPLIANCE MAY DELIVER WATER
AT HIGH TEMPERATURE. REFER TO THE
PLUMBING CODE OF AUSTRALIA (PCA),
LOCAL REQUIREMENTS AND INSTALLATION
INSTRUCTIONS TO DETERMINE IF
ADDITIONAL DELIVERY TEMPERATURE
CONTROL IS REQUIRED.
If the appliance is 50°C locked model (models
TH50E/FCSN/L-50 and TH28FNSN/L-50),
the following statement & warning must be
adhered to:
THIS APPLIANCE DELIVERS WATER NOT
EXCEEDING 50°C IN ACCORDANCE WITH AS
3498.
WARNING — THIS APPLIANCE MUST ONLY
BE INSTALLED IN ACCORDANCE WITH THE
ACCEPTABLE PLUMBING CONFIGURATIONS
SPECIFIED IN THESE INSTRUCTIONS. FAILURE
TO DO SO MAY RESULT IN CONDITIONS
WHERE DELIVERY TEMPERATURE CONTROL
IS INADEQUATE.
If the appliance is 50°C locked model with
recirculation system (both single and Multi-
system), take sterilization measures (heating,
chlorination, chlorine dioxide, UV, etc.)
according to the standards of local code.
To prevent injury or death, do not allow
small children to bathe or play in the
bathroom unsupervised.
This appliance is not intended for use by
persons (including children) with reduced
physical, sensory or mental capabilities,
or lack of experience and knowledge,
unless they have been given supervision or
instruction concerning use of the appliance
by a person responsible for their safety.
Contact a qualified service technician for any
necessary repairs, service or maintenance.
Do not use parts other than those specified
for this appliance.
To prevent burns or scalding, turn off the
power button and wait until the appliance
cools before performing maintenance.

7
Do not drink water that has been inside the
appliance for an extended period of time.
Clean the filter on the water inlet as
frequently as required. The quality of
your local water will affect the frequency
required.
Keep the area around the appliance clean.
If boxes, weeds, cobwebs, cockroaches etc. are
in the vicinity of the appliance, damage or fire
can result.
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.
Do not run water through the appliance
when appliance is not on.
When discharging hot water, make sure the
appliance is ON. If water is run through the
appliance with the appliance OFF, water may
condense inside the appliance and cause
incomplete combustion or damage to the
internal electrical components.
Contact Customer Service before using with
a solar heater.
NOTICE
Do not disassemble the Remote Controller.
Do not use chlorine-based, acidic, alkaline
detergents, organic solvents such as benzine
and thinner, or Melamine Sponge to clean
the Remote Controller.
This may cause discolouration, deformation,
scratches or cracks.
Do not get the Remote Controller wet.
It is not water resistant, 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 (See page
30)
• Damage can occur from frozen water within
the appliance 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.
Power must be switched on at all times for
antifrost protection to work.
If it is snowing, check the air inlet, exhaust
gas vent and exhaust vent terminal for
blockage.
Do not touch the exhaust vent or the flue
terminal and concentric pipe during or
immediately after operation of the Water
Heater.
CAUTION

Thermann Owner’s Guide
Gas Continuous Flow Water Heaters
8
Important Safety Information 3
Contents 8
General 9
Names and Functions of Controllers 11
Initial Operation 13
Clock Adjustment 14
Setting and Using the Water Heater 15
Automatic Water Heater ON or OFF Operation 17
Locking the Remote Controller 19
Customizable Settings <Misc settings> 20
System Check 24
For System [Rcrc] 25
Enabling Automatic Recirculation Operation 25
Manually Starting Recirculation Operation 26
Setting the Recirculation System Operation Timer 27
Frost Protection 30
Regular Maintenance 33
Troubleshooting 35
Follow-up Service 39
Specifications 41
Maintenance 43
Manufacturer’s Warranty 45
CONTENTS

9
(e.g. TH32ECS Series) (e.g. TH32FCS Series)
These illustration shows an example of installation.
The exact installation configuration may be slightly different.
TH50ECS, TH32ECS and TH28ENS Series:
Outdoor Wall Mounted, Power flue Model
TH50FCS and TH32FCS Series:
Indoor Wall Mounted, Power Vent/Sealed Model
General
1
2
10 10
11 11
5 5
8
9
6
9
8
77
3

Thermann Owner’s Guide
Gas Continuous Flow Water Heaters
10
1. Flue Exhaust
2. Intake Pipe
3. Exhaust Pipe
4. Concentric Pipe
5. Front Cover
6. Air Inlet
7. Inlet water filter
Inside Water Inlet (See page 34)
8. Gas Supply Valve
9. Water Supply Valve
10. External Weatherproof Power Point
11. (Condensing Model only)
Condensate Drain Pipe
Discharge the condensate.
TH28FNS Series:
Indoor Wall Mounted, Power Vent/Sealed Model
4
10
5
9
8
7

11
Main Controller (RC-9018C) <Optional or Included>
The Remote Controller will emit a tone when a button is pressed.
Cover shown in the open position.
Names and Functions of Controllers
4
5
10
11
6
7
8
9
Remote Controller
Part Number
The part number is printed
on the surface of the cover.
2
1
1. Power Button / Indicator (Green)
For turning the Water Heater ON/OFF.
2. PROG Button / Indicator (Red)
Activate the automatic Water Heater power ON/
OFF setting as determined by the user selected
schedule. (See page 17)
3. ALARM OFF Button / Indicator (Red)
Stop the tone that is emitted when an error occurs.
(See page 38)
4. Speaker
5. Display Screen (See next page)
6. MENU Button
Use to change system settings or to return to the
home screen.
If you press the MENU button and press the /
buttons, “Sys monitor” is sometimes displayed,
however, do not use this mode as it meant for
installation or service technician only.
7. BACK Button
Return to the previous screen while making system
settings or checking status.
8. / Buttons
For setting the hot water temperature (See page
15), the flow meter alarm, and other settings.
9. ENTER Button
Confirm changes made by the user.
10. STATUS Button
Check the status of the system or the number of
installed the Water Heater. (See page 24)
11. Lock Button
Lock Remote Controller operation. (See page 19)
3

Thermann Owner’s Guide
Gas Continuous Flow Water Heaters
12
• The display screen shown below is for illustration purposes only.
The actual display will vary depending on how the Water Heater is being used.
• After a button is pressed, the display will gradually become darker to prevent unnecessary power consumption
by the Remote Controller.
Display Screen
The home screen is displayed when the Power button is ON.
Normally, the hot water temperature and the clock, etc. are
displayed.
What is the home screen?
(Home Screen Example)
8
4
2, 3
1. Flame Indicator
The flame indicator is displayed during combustion
when using hot water or recirculation functions.
2. Display for Temperature Setting
During normal operation, “Temp” is displayed.
3. Display for High Temperature “Hi temp”
Displays when the set temperature is 55°C or
higher. (See page 16)
4. Temperature Setting (e.g. 40°C)
5. Clock Display (e.g. 10:15 am)
Normally the clock display is not shown when the
Power button is OFF.
* This setting can be changed so that the clock is
displayed even when the Power button is turned
OFF. (See page 20)
6. Error Code
A number will flash if a failure occurs.
7. Locked Display
The lock symbol is displayed when the Remote
Controller is locked. (See page 19)
8. Recirculation Timer
The clock symbol is displayed when the
recirculation timer is activated. (See page 27)
9. Display for Recirculation Operation
• For systems that use recirculation operation, the
symbol is displayed when the Power button is
turned ON.
• It is displayed during the recirculation operation.
(See page 15)
1 7
5, 6 9

13
4. Turn on the power.
Before start using for the first time, do the
following:
Do not touch the power cord with wet hands.
WARNING
Initial Operation
1. Open the water supply valve.
2. Open a hot water fixture to confirm that water
is available, and then close the fixture again.
Hot water
fixture
3. Open the gas supply valve.

Thermann Owner’s Guide
Gas Continuous Flow Water Heaters
14
Operation
1. Press the MENU button inside the cover.
2. Press the ENTER button.
3. Use the / buttons to reset the clock.
4. Press the the ENTER button to complete the
clock setting.
NOTE • In the event of a power outage
or after disconnecting power to
the Water Heater, when power is
restored, the clock on the display
screen will show “- :-- ” and the
clock will need to be reset.
• By default, when the Power
button is turned OFF, the
clock display disappears, but
it is possible to display the
clock when the Power button
is turned OFF by changing a
setting. (See page 20)
(e.g. 10:15 am)
The screen returns to the previous screen.
• This adjustment can be made whether the
Power button is ON/OFF.
• The time changes in 1 minute increments
with each press of the button, and then in 10
minutes increments if the button is pressed
and held.
• If the display is left untouched for
approximately 20 seconds without pressing
the ENTER button, the setting will be
completed. When the Power button is turned
ON, the home screen will be restored.
Clock Adjustment

15
Operation
• To prevent scalding:
Hot water 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.
• When setting the Water Heater to 55°C or
higher, “Hi temp” will blink for 10 seconds and
emit a tone as a high temperature warning.
• Take caution when using the Water Heater
again after setting to 50°C or higher. Always
check the set temperature before use.
DANGER
1. The Power button is ON.
2. Set the temperature using the / buttons
inside the cover.
3. Turn on hot water.
NOTE • Hot water temperatures shown
are approximate and may differ
from the actual temperature
at the fixture depending on
external factors such as the
season and length of piping in
the system.
• When low temperatures are set
(for washing dishes, etc.), if the
incoming water temperature
is already quite high, it may be
difficult to ensure the outgoing
water temperature is as per the
setting.
• Check the temperature displayed
before using any hot water.
Be especially careful using hot
water after the set temperature
has been changed.
• When the hot water
temperature is adjusted using
thermostatic water mixing
valves, set the temperature
on the Remote Controller
approximately 10°C higher than
the required temperature to
ensure the appropriate fixture
temperature.
If “System [ Tank ]” is displayed, hot water will be
discharged at the temperature of the storage tank.
(See page 24)
• The Power indicator is displayed.
• The previously set hot water supply
temperature is shown.
• The setting temperature displayed may vary
from the actual temperature at the fixture
depending on conditions such as season or
length of piping.
[For systems with recirculation operation]
• If you set the Power button to ON,
recirculation operation is automatically
started. (If “Synchro ON/OFF” was set to ON.
(See page 25))
• Turn off hot water, the symbol disappears.
• During recirculation, the symbol may be
continuously displayed.
(e.g. 40°C)
(e.g. 42°C)
Setting and Using the Water Heater
For systems with recirculation
operation, is displayed here.
Displayed during combustion
Check

Thermann Owner’s Guide
Gas Continuous Flow Water Heaters
16
Temperature Setting Options
The temperature settings below are examples. The
temperature setting necessary depends on the
usage, the length of piping and the season.
(Default setting is 40°C)
37°C Washing dishes, etc.
38°C
39°C
Shower, hot water supply, etc.
40°C
41°C
42°C
43°C
44°C
Hot water supply, etc.
45°C
46°C
47°C
48°C
50°C
55°C
High temperature*
60°C
65°C
70°C
75°C
80°C
• While using hot water, the set temperature can
be lowered to minimum of 37°C, for safety, it
cannot be raised above 43°C until all hot water
taps are closed. (For some products)
• Contact Customer Service to change the
maximum temperature to 85°C.
* Display when high temperature is set
NOTE • If the set temperature requires
frequent adjustment, locate the
Remote Controller in an easily
accessible location.
• Consult local codes for minimum
operating temperatures.
(e.g. 55°C)
Blinks for
approximately
10 seconds
Displayed

17
Operation
1. Check that the current time is properly set.
(Setting the time: See page 14)
2. Check the PROG button is set to OFF.
3. Press the MENU button inside the cover, Select
“Set PROG” using the / buttons.
4. Press the ENTER button.
5. Set the ON time to “AM 10:00” using the /
buttons.
6. Press the ENTER button to complete the setting.
7. Set the OFF time to “PM 8:00” using the /
buttons.
8. Press the ENTER button to complete the setting.
9. Check “Set” is selected, and then press the
ENTER button to confirm all settings.
Set the time to turn ON or OFF the
Power button automatically
• If you set the time to turn ON or OFF the Power
button, the Power button is automatically turned
ON or OFF at the set time every day by just
turning the PROG button ON.
• It is also possible to set only ON or OFF operation.
• For recirculation systems, circulation is started
or stopped according to the Power button
condition, ON or OFF.
This example describes setting the “ON time” and
“OFF time” to 10:00 am and 8:00 pm, respectively.
• This adjustment can be made whether the
Power button is ON/OFF.
• The time changes in 10 minutes increments
with each press of the button, and then in 1
hour increments if the button is pressed and
held.
• If you do not want to set the “Start time”,
select “- :--” (located between AM 11:50 and
PM 0:00 settings).
• Follow the same procedure from step 5.
• The previously set “Start time”and “End time”
are displayed.
Automatic Water Heater ON or OFF Operation

Thermann Owner’s Guide
Gas Continuous Flow Water Heaters
18
The PROG button is ON.
The PROG button is OFF.
NOTE • If the PROG button is not set
to OFF, the Water Heater will
automatically turn ON or OFF at
the set times.
• If there is a power failure or
power is disconnected to
the Water Heater, automatic
operation will be deactivated.
Activate Automatic Operation
Tips for operation
Deactivate Automatic Operation
Following this procedure allows for automated
control of Water Heater operation without user
interaction.
(The setting time shown on the display of the
Remote Controller is for example purposes only.)
• You can activate automatic operation
regardless if the Power button is ON or OFF.
• The PROG indicator is displayed when
activated.
• “Start time” and “End time” will be displayed
upon activation.
• If both the “Start time” and “End time” are set
to “- :--”, the alarm sounds and “Set PROG”
will display.
• The PROG indicator disappears.
• If the display is left untouched for
approximately 20 seconds without pressing
the ENTER button, the setting will be
completed. When the Power button is turned
ON, the home screen will be restored.
• If you want to change “ON/OFF time”, select
“Reset” and then press the ENTER button,
return to step 5.
(Display Example)
e.g. Both ON and OFF functions are automated.
e.g. Only ON function is automated.
e.g. Only OFF function is automated.
The P
ower buon
is automacally
turned ON
at 10:00 am.
The Power buon
is automacally
turned OFF
at 8:00 pm.
The Power buon
is automacally
turned ON
at 10:00 am.
Your desired me
(Manually
turned OFF)
Your desired me
(Manually
turned ON)
The Power buon
is automacally
turned OFF
at 8:00 pm.

19
Operation
1. Press and hold Lock button for approximately 2
seconds to lock the Remote Controller.
2. If you press PROG button, MENU button, and
/ buttons while the Remote Controller is
locked, the “Locked” screen will appear.
Press and hold Lock button for approximately 2
seconds to unlock the Remote Controller.
Unlock the Remote Controller
By locking the Remote Controller, the settings
cannot be changed if a button is pressed by
mistake.
• This adjustment can be made whether the
Power button is ON/OFF.
• The operations of PROG button, MENU
button, and / buttons are locked.
• Approximately 3 seconds after locking the
Remote Controller, the display will return to
the previous screen.
• Approximately 3 seconds after the “locked”
screen appears, the display will return to the
previous screen.
• Approximately 3 seconds after unlocking the
Remote Controller, the display will return to
the previous screen.
Locking the Remote Controller

Thermann Owner’s Guide
Gas Continuous Flow Water Heaters
20
Limiting the Maximum Output
Temperature
The maximum output
temperature can be limited to
prevent discharging hot water
at too high of a temperature.
Display Screen Power Saving Mode [powersave dsply]
To conserve power consumption of the display, the screen can be turned
off completely or set to only display the clock when the Power button is
turned OFF.
1. The Power button is OFF.
3. Press the ENTER button.
2. Press the ENTER button.
2. Press the MENU button
inside the cover, select
“Misc settings” using the
/ buttons.
1. Press the MENU button
inside the cover, select
“Misc settings” using the
/ buttons.
4. Select “Max set temp” using
the / buttons, and then
press the ENTER button.
3. Select “Powersave dsply”
using the / buttons,
and then press the ENTER
button.
5. Change the setting using
the / buttons.
(Setting completed.)
4. Change the setting using
the / buttons.
(Setting completed.)
Operation
• The “Misc settings”
screen appears.
• The “Misc settings”
screen appears.
• To change other settings,
select the option and
press the ENTER button.
• To return to the home
screen, press the MENU
button or let it sit
for approximately 20
seconds.
• To change other settings,
select the option and
press the ENTER button.
• To return to the home
screen, press the MENU
button or let it sit
for approximately 20
seconds.
Operation
37- 48°C (In 1°C intervals),
50- 80°C (In 5°C intervals)
Yes:
The display will turn off.
The clock will not be
displayed when the Power
button is turned OFF.
No-1:
The display will not turn
off. The clock will not be
displayed when the Power
button is turned OFF.
No-2:
The display will not turn
off. The clock is displayed
when the Power button is
turned OFF.
(Default setting = 80°C)
(Default setting = No-1)
(e.g. 80°C)
(e.g. No-1)
Customizable Settings