B3133

Synco™ 700
Heating Controller RMH760B
Boiler Sequence Controller RMK770
Operating Instructions

CE1B3133_en
2015-03-31 Building Technologies
Siemens Switzerland Ltd
Building Technologies Division
International Headquarters
Gubelstrasse 22
6301 Zug
Switzerland
Tel. +41 41-724 24 24 © Siemens Switzerland Ltd, 2006
www.siemens.com/buildingtechnologies Subject to change

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Siemens Operating Instructions RMH760B, RMK770 CE1B3133_en

Building Technologies 2015-03-31
Contents
The operating elements ................................................... 4 Do you want to readjust the time of day or the date? ....... 9
The display ...................................................................... 4 Do you want to enter holiday periods? ............................. 9
The symbols appearing on the display ............................. 4 Do you want to enter special days? ............................... 10
Navigating through the menu ........................................... 5 Do you want to have current plant data displayed? ........ 10
Do you want to start heating your rooms now? ................ 5 Do you want to display measured value trends .............. 10
Do you want to heat according to the heating program? .. 6 A fault has occurred ....................................................... 11
Do you want to change the daily heating periods? ........... 6 The following tips can help in the event problems occur 11
You don’t want to heat according to the heating Saving energy without sacrificing comfort ...................... 11
program ........................................................................... 7 Info page boiler sequence .......................................... 12
What room temperature can you set? .............................. 7 Info pages boiler sequence manager ......................... 12
Is the room temperature too high or too low? ................... 7 Info pages boiler / primary controller / main controller 12
Do you want to display the current operating state of the Other Info pages ........................................................ 13
heating circuit? ................................................................ 8 Main menu boiler sequence manager ........................ 13
Do you want to start DHW heating? ................................. 8
Main menu boilers (1…6) ........................................... 13
Is the DHW too hot or too cold? ....................................... 8
Main menu primary controller / main controller ........... 14
Do you want to change the DHW time program? ............. 9 Flue gas measuring mode .............................................. 14

Note that these Operating Instructions cover all settings and readings of
the RMH760B heating controller and the RMK770 boiler sequence controller accessible by the user.
However, depending on the type of plant, not all functions are necessarily active.
In case of doubt, please contact your heating engineer.

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Siemens Operating Instructions RMH760B, RMK770 CE1B3133_en

Building Technologies Contents 2015-03-31
The operating elements

3111Z07
1 Display
2
3
1
2 INFO button
5 4 Function 1: Display of key plant data
Function 2: Display of information about the individual data
Plug-in type operator unit points on the current menu

3 OK select-and-press knob

3112Z08
2 Turn: Selection of menu option or adjustment of value
Press: Confirmation of menu option or setting

1 4 ESC button
Returning to the previous menu

3 5 Fault button with LED

5 LED lit / flashes: Indication of fault
4
Press: Acknowledgement of fault or reset
Detached operator unit

The display
Level: Box indicating on which level you
The display offers a number of
presently are (info or setting level)
presentation choices.
The example given here shows a
Menu title: Top line showing the menu
you are using menu.
Other displays:
Heating circuit 1
Partial plant: Symbol showing the partial · Start display (welcome picture)
Time switch 1… · Help displays
Holidays/special days… plant on which you presently are (e.g.
heating circuit 1) · Pop-up window (for settings)
Room operating mode…
Room setpoints… Cursor position: Inverted lines (white
script on black background) indicating
that cursor is at this position

Dots: 3 dots (…) indicating that sub-

menus follow

Scroll arrows: Arrows indicating that

additional menu options are available
(above or below)

The symbols appearing on the display

Symbol Meaning Symbol Meaning
Virtual operating mode selector (dot indicates the current Boiler ( = boiler 1, etc., up to boiler 6)
operating mode) Protection for DHW
Automatic operation according to the time program Time switch for DHW heating
Room operating mode Comfort Time switch for the circulating pump
Room operating mode Precomfort Fault
Room operating mode Economy Info level – display of key values
Protection (frost protection) Setting level – display and adjustments
Heating circuit ( = heating circuit 1, etc.) Holidays
Time switch Special day
Primary controller Trend 1
Main controller Meter 1
DHW heating Please wait – controller is working
DHW heating to the normal setpoint Adjusted value
DHW heating to the reduced setpoint Help display – information about the selected data
Boiler sequence point

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Siemens Operating Instructions RMH760B, RMK770 CE1B3133_en

Building Technologies The operating elements 2015-03-31
Navigating through the menu
Introduction
These Operating Instructions assist you in operating the controller in all standard situations (Do you want …, etc.).
The Operating Instructions always give you the Path you need to follow the menu in order to reach the relevant function – from
start display to the adjustable value.

Start display: Start display

When not operated, the display always shows the start display – unless a fault has
Wednesday 12.11.2008 14:52 occurred.
Welcome 1. Press the OK knob:
The list of menus appears.
Information

Main menu

▼
Main menu: Main menu
2. Turn the OK knob: The cursor advances from one line to the next.
Main menu 3. The selected line appears with a black background and inverse text.
Heating circuit 1… 4. Select the required line.
Heating circuit 2… 5. Confirm your choice by pressing the OK knob.
Holidays/special day…
Time of day/date…

Submenu: Submenu
6. Now, you are on the submenus.
Holidays/special days 7. The 3 dots (…) after the text indicate that additional submenus follow.
8. Follow the indicated path by turning the OK knob to find the option, then push the
▼Entry 1…
knob to confirm.
--.--.-- --.--
9. At the end of the path you will reach the adjustable value.
--.--.-- --.--

Setting the numerical value: Setting the numerical value

10. The numerical value appears as a pop-up window.
Entry 1 11. Adjust the value by turning the OK knob.
Start:25.02 --.--.-- --.-- 12. Then, confirm by pressing the knob.
End: --.--.-- --.-- 13. The cursor now advances to the next value to be adjusted, or returns to the data
point if there is no other value to be adjusted.
Reason: Holidays
14. By pressing the ESC button, you return to the entry box or menu choice you
Cancel entry have previously quit.
15. Pressing the ESC button several times takes you back to the start display.

With the majority of menus, you can display information about the option currently selected.
For that, press the INFO button.

Do you want to start heating your rooms now?

Prerequisites Room operating mode
Prerequisites for switching the heating on for the first In mode, your controller automatically maintains the
time are commissioning of the plant by your heating required room temperature during every phase of the 24-hour
engineer, power (mains switch on), and availability of heating program. It operates according to the selected heating
fuel. program, gives consideration to the holidays and special days
Then, the plant will be ready to operate. Now, from entered and controls the heating such that heat will be delivered
submenu Preselection, select room operating mode only when required.
.
If your plant includes several heating circuits, you can
select room operating mode for every heating
circuit separately.

Path: Main menu > Heating circuit … > Room operating mode > Preselection

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Siemens Operating Instructions RMH760B, RMK770 CE1B3133_en

Building Technologies Navigating through the menu 2015-03-31
Do you want to heat according to the heating program?
In room operating mode , the controller operates Example of a heating program:
according to the selected heating program.
Tuesday
Heating program From 06:00 Comf
The heating program contains the start time and the
associated room operating mode (room setpoint) for all
phases of the 24-hour heating program. The heating
program has been entered for you. If you wish, you can
change the entries made to satisfy your personal needs.

If your plant comprises several heating circuits, you can From 06:00: Comfort mode
select the heating program for every heating circuit From 11:30: Precomfort mode
separately (e.g. path: … > Heating circuit 2 > …). From 12:30: Comfort mode
From 19:00: Precomfort mode
From 21:00: Economy mode

Please note that the heating program does not contain switching times but periods of time for the required temperature levels.
The switching times are calculated by the controller’s optimization function!

Do you want to change the daily heating periods?

General information about the heating program Prior to making entries, please observe
In the heating program, you can set the daily heating peri- · First, always enter the start time of the heating period,
ods to suit your individual needs. Each day can accommo- then the room operating mode of that period
date a maximum of 6 switching points; a room setpoint must · You have room operating modes , and to choose
be assigned to each heating period. from. Adjust the associated setpoints on the Room
In addition to the weekdays (Monday through Sunday), you setpoints menu ( page 7)
can program a special day, that is, a special 24-hour heating · You can copy any 24-hour heating program to other days
program. Changing and canceling times and setpoints
The special day will be activated when you make an entry
1. Select the required day.
on the Holidays/special days menu ( page 9).
2. In the diagram, advance pointer to the point in time to
be changed.
If your plant comprises several heating circuits, you can set 3. Set the required time.
the heating program for every heating circuit separately (e.g. Canceling the time: Reset the time via 00:00 until - -
path: … > Time switch 2 > … ). : - - appears.
4. Select the required setpoint.
Changes on the controller can be made only if the heating 5. If required, set additional times and select additional
program is predefined by the time switch in the controller. setpoints.
Otherwise, it is an external operator station.

Path: Main menu > Heating circuit … > Time switch …

Entering additional heating periods New 24-hour program

1. Select the required day. The controller is supplied with a 24-hour program for every
2. In the diagram, advance pointer to the last point in day (including the special day). This means that you will
time of the current program. never have to create a new 24-hour program, but only
3. Turn the OK knob by one notch; change an existing program.
--:-- - - - - - - appears.
4. Set the required start time. Power off – heating program lost?
5. Select the required room operating mode. In the event of a power failure, the 24-hour programs en-
tered will be maintained, independent of the duration of the
Copying a 24-hour heating program power failure.
1. Select the day to be copied.
2. Turn the OK knob in clockwise direction until Copy to:
appears.
3. Press the OK knob.
4. The menu with the selection of days (week section,
individual weekdays, special day) appears.
5. Select the required weekday or week section.
6. Copy (press the OK knob).

First, prepare a 7-day schedule for the daily heating periods and setpoints – this will facilitate entry into the controller!

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Building Technologies Do you want to heat according to the heating program? 2015-03-31
You don’t want to heat according to the heating program
Other room operating modes
Setpoints
If you do not want to heat according to the heating pro-
The setpoints assigned to the room operating modes use the
gram, select one of the following room operating modes
from menu option Preselection: same symbols and designations.

Comfort Continuously heating to the Impact of continuous operation

Comfort setpoint In continuous operation, demand-dependent control of the
Precomfort Continuously heating to the heating (automatic heating limit) and the holidays and special
Precomfort setpoint days entered are inactive!
Economy Continuously heating to the
Economy setpoint If your plant comprises several heating circuits, you can select
Protection No heating, unless there is the heating program for every heating circuit separately (e.g.
path: … > Heating circuit 2 > …).
risk of frost

Path: Main menu > Heating circuit … > Room operating mode > Preselection

If you only want to heat temporarily in one of the continuous operating modes,
don’t forget to return to AUTO mode in due time.

What room temperature can you set?

Your heating controller offers 4 room operating modes. A If your plant comprises several heating circuits, you can
room setpoint is assigned to each room operating mode. adjust the setpoints for every heating circuit separately
Each setpoint is adjustable. (e.g. path: … > Heating circuit 2 >… ).
Your controller changes the setpoints according to a time
schedule (heating program, page 6), or provides contin- The following setpoints are available. The default values
uous heating operation to the setpoint of the selected room represent the recommended setpoints.
operating mode.
Symbol Setpoint Impact on the room? Guide value
Comfort This is the setpoint for the occupied space. It ensures comfortable conditions 21 °C
Precomfort This is the energy saving setpoint for the space to ensure that comfortable conditions 19 °C
will be reached quickly when changing to Comfort mode
Economy This is the energy saving setpoint for the space for longer periods of time (e.g. during 16 °C
the night) when no Comfort setpoint is required
Protection A minimum room temperature is ensured to protect the space against damage due to 10 °C
frost

Path: Main menu > Heating circuit … > Room setpoints

Is the room temperature too high or too low?

Before you make readjustments… The room temperature… Readjust as follows:
If the current room temperature is too high or too … is too high in cold weather Lower the value
low, check the room operating mode. Temporary [Breakpoint 1] flow temp
deviations can always occur, depending on the … is too low in cold weather Raise the value
current operating state. Check to find out if the [Breakpoint 1] flow temp
room temperature varies depending on the outside … is too high in mild weather Lower the value
temperature or if it is always too high or too low. [Breakpoint 2] flow temp
Does the room temperature vary depending … is too low in mild weather Raise the value
on the outside temperature? [Breakpoint 2] flow temp
If that is the case, proceed as follows:
3131D10en

1. Find out in which climatic conditions the room Flow temperature

temperature is not right.
Breakpoint 1
2. On the Heating curve submenu, readjust the
setting to the relevant situation in accordance
with the adjacent table. Breakpoint 2
3. After the readjustment, wait 1 to 2 days, allow-
ing the control to settle. Breakpoint 1 Breakpoint 2
+
4. Another readjustment may be required. Outside temperature

Path: Main menu > Heating circuit … > Heating curve

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Siemens Operating Instructions RMH760B, RMK770 CE1B3133_en

Building Technologies You don’t want to heat according to the heating program 2015-03-31
Do you want to display the current operating state of the heating circuit?
If, during automatic heating operation, you want to know Meaning:
your plant’s current operating state (the room operating
mode), go to the Info level: Preselection
1. Return to the start display by pressing the ESC This is the selected room operating mode.
button. In the example shown, the virtual operating mode selector is set
2. Press the INFO button. to .
3. Turn the OK knob until the required page appears. State
If your plant comprises several heating circuits, you can This is the current state.
have your plant’s operating state displayed for every In the example shown, the Comfort setpoint is maintained.
heating circuit (turn the OK knob until the desired heat- Cause
ing circuit appears). Here, the cause for the current state is given. Possible reasons:
In the same way, you can have the DHW circuit dis- · Operating mode contact (manual changeover)
played (if present), as well as other data. · Operating mode selector (manual changeover)
The room operating state is displayed as follows: · Special day
· Holidays
Heating circuit 1 · Time switch of the time program (in the example shown)
Presel:

State: Comf
Cause: Time switch

Do you want to start DHW heating?

(Only with RMH760B)
Prerequisites
The heating plant must be commissioned by the heating
engineer.
When the preconditions are met, DHW heating is ready
to be started. Select menu option Preselection and then
select operating mode . This is the recommended
and energy-saving operating mode.
The following choices are available:
Symbol Operating mode Impact on the DHW circuit? Guide value
Automatic The DHW temperature changes according to the DHW time program, from
normal temperature to reduced temperature, or vice versa
Normal The DHW is maintained at the normal temperature 55 °C
Reduced The DHW is maintained at the reduced temperature 40 °C
Protection No DHW heating: The plant remains protected against frost however 5 °C

Path: Main menu > DHW > DHW optg mode > Preselection

Is the DHW too hot or too cold?

(Only with RMH760B) When making the settings, observe that …
For the DHW temperature, you have 3 setpoint choices: · extremely hot DHW can lead to scalding!
· Normal setpoint to ensure the high temperature level · extremely hot DHW produces scale on the storage tank
required for washing, bathing and showering and / or the heat exchanger, the thermostat, the piping
· Reduced setpoint to save energy and the valves!
· Frost protection setpoint at a minimum temperature level
to prevent freeze up of plant For this reason, make certain that the normal DHW tem-
Adjust the required setpoint on the Setpoints submenu. perature will not exceed 55 °C.

Path for plant without consumer control: Main menu > DHW > Setpoints

Path for plant with consumer control: Main menu > DHW > Setpoints consumers

To kill legionella viruses, the DHW can be periodically heated up. This takes place automatically and there is no need for you to
make specific settings.
All that is required is that your heating engineer has activated the function.

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Building Technologies Do you want to display the current operating state of the heating circuit? 2015-03-31
Do you want to change the DHW time program?
(Only with RMH760B) Time program of the circulating pump
Time program of DHW heating The same way – if you wish – you can change the time
Similar to space heating, the DHW is heated according to a program for activating the circulating pump.
certain time schedule. The change between normal and Make the entries on submenu Circ pump time switch.
reduced temperature takes place automatically.
You can adopt the factory-set time program, but here too,
individual settings can be made. Here too, prerequisite is that your controller controls DHW
heating autonomously. In interconnected plant, the time
The DHW time program can be changed the same way as
program can be preset from an external location.
the space heating program:
From the DHW time switch submenu, select the weekday,
then the start time of the heating period, and then the as-
signed setpoint.
Here too, it is possible to copy a 24-hour program to other
days.

Path: Main menu > DHW > DHW time switch

Path: Main menu > DHW > Circ pump time switch

Do you want to readjust the time of day or the date?

Time of day / date The Time of day/date menu includes:
All data of the yearly time switch in your controller were · Time of day (e.g. 09:53)
entered when your plant was commissioned. · Date (e.g. 25.07)
If readjustments are required, use the Time of day/date menu. · Year (e.g. 2008)
Summer- and wintertime · Summertime start (e.g. 25.03.)
The same is true if you need to readjust the dates for the · Wintertime start (e.g. 25.10.)
start of summer- and wintertime.
Note: Do not enter the actual dates of changeover but the
earliest possible dates for the start of summertime and
wintertime in accordance with international standards!

Path: Main menu > Time of day/date

The change from wintertime to summertime, or vice versa, is automatic!

Do you want to enter holiday periods?

You can enter a total of 16 holiday periods and special days Room operating mode
(see next section). During a holiday period, there is no Enter the required room operating mode with menu option
heating program active but only the same room operating Holidays-room operating mode. Available are Economy or
mode. Protection . The entry will apply to all holiday periods.
Date DHW heating operating mode
On submenus Entry 1, Entry 2, Entry 3 , etc., you need to enter If your controller also controls DHW heating, you need to
for each holiday period: enter the required operating mode. You find it with menu
· Menu option Start: Date, year and time of day of the first option DHW optg mod holid.
day of the holiday period The following operating modes are available: Auto-
· Menu option End: Date, year and time of day of the last matic, Normal, Reduced, Protection.
day of the holiday period
· Menu option Reason: The holidays
Every entry can be deleted (menu option Cancel entry).

Main menu > Heating circuit … > Holidays/special days > Entry …
Paths:
Main menu > Heating circuit … > Room operating mode > Rm optg mode holid

Main menu > DHW > Holidays/special days > Entry …

Paths for RMH760B:
Main menu > DHW > DHW operating mode > DHW optg mode holid

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Siemens Operating Instructions RMH760B, RMK770 CE1B3133_en

Building Technologies Do you want to change the DHW time program? 2015-03-31
Do you want to enter special days?
You can enter a total of 16 special days and holiday periods. Every entry can be deleted (menu option Cancel entry).
During special days, the normal heating program for space Heating program
heating is not active, but a special program. Enter the heating program for special days on the Time
Date switch 1 menu ( page 6). It will apply to all special days.
On submenus Entry 1, Entry 2, Entry 3 , etc., you need to enter If required, also set Time switch 2 or 3.
for each special day:
· Menu option Start: Date, year and time of day of the spe- DHW heating
If your controller also controls DHW heating, you can also
cial day
enter the following:
· Menu option End:
· DHW time program for special days, on the
For 1 special day: Confirm the data that appear in the
DHW time switch menu ( page 9)
pop-up window.
For 2 or more successive special days: Date, year and · Time program for circulating pump on special days; on the
Circ pump time switch menu ( page 9)
time of day of the last special day
· Menu option Reason: Special day

Path: Main menu > Heating circuit … > Holidays/special days > Entry …

Path for RMH760B: Main menu > DHW > Holidays/special days > Entry …

Do you want to have current plant data displayed?

If you are on the start display (welcome picture), you only Menu Data acquisition
need to press the INFO button and you will be on the Info Data queries are explained on page 10 based on the
level . Here, you find the key plant data listed. function Data acquisition > Trend channel.
Please note: The display depends on the type of plant.
You cannot change any values here! You find the following data via the following paths:
Now, turn the OK knob. This will take you from one Info Trend
page to the next. Main menu > Data acquisition > Trend channel 1…4
The ESC button will take you straight back to the start dis- Display of trend recordings of characteristics.
play.
Meter
Starting on page 12 of these Operating Instructions, you will Main menu > Data acquisition > Meter 1…4
find useful explanations and notes on different types of plant The meters are used to acquire consumption values. The
data (chapter Info pages). current meter reading, the date and the reading of the last
15 months are displayed.

The names of the submenus used in these operating instructions may have been replaced by
clear-text names as defined by your service engineer.

Do you want to display measured value trends

Data acquisition… allows you to display the progression of up Navigate views:
to 4 measured values (Trend channel 1…4). This trend func- 1. Turn the OK knob counter clockwise to jump back the
tion shows measured value trends over the last 8 minutes, display by 1 day, and vice versa.
the last 8 hours, the last 24 hours or the last 6 days. 2. Starting with the current 24-hour view, you reach the
view of the last 8 hours by turning the OK knob in clock-
Display measured value trend:
wise direction. Turn the OK knob clockwise again and
1. Select the Data acquisition… menu.
you reach the view of the last 8 minutes, turn counter
2. Select the required Trend channel 1…4 or the measured
clockwise to return.
value in clear-text; the 24-hour view of the current day
3. Press the ESC button to go back to the previous menu.
appears. The measured value trend is presented as follows:

Path: Main menu > Data acquisition… > Trend channel 1…4

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Building Technologies Do you want to enter special days? 2015-03-31
A fault has occurred
If a fault occurred in the plant, it will appear on the display; in Additional information about the display of faults:
addition, the LED inside the button will flash or will be on.
Proceed as follows: Menu Faults current
Here, you can see which faults are currently present. The
LED flashes: following information about each fault is displayed:
1. Press the button to unlock. · The cause (e.g. pump 1)
2. If the LED keeps flashing, the fault still exists or the · The fault number (important for the heating engineer)
button must be pressed again to unlock. · Date and the time of day the fault first occurred
LED lit: Menu Fault history
1. Rectify the fault. Here, each of the last 10 faults will be listed. The information
2. If the LED is still lit, the button must be pressed again given is the same as that provided with current faults.
to unlock. Menu Fault status signal bus
Unlocking is possible only after the cause of fault has If your plant includes several interconnected devices, faults
been removed. of other controllers will be displayed on your controller.
Quick display of faults
In the event of fault, refer to the tips given on page 11. If you keep the ESC button depressed for 2 seconds, the
If you cannot rectify the fault, contact your heating engineer. current fault will be displayed.

Path: Main menu > Faults

The following tips can help in the event problems occur

General The required room temperature is reached either too
Before you call in your heating engineer, you should check early or too late:
the following: · Change the time program
· Is your plant switched on? Check main switch and all · When the building is well insulated, it takes more time to
other switches cool down
· Are all fuses of your plant in order?
· Is enough fuel in the tank? The heat source does not operate any more:
· Have settings been changed by unauthorized persons? · The burner has initiated lockout. Press the reset button!
(Time of day, setpoints, etc.) · The heating circuit pump and / or the boiler pump does /
· Does a fault appear on the display? do not operate. Check the fuses!
· The fuel tank is empty or the fuel pump does not operate
The heating always maintains the same room tempera-
ture: The heat source operates, but there is no supply of
· Check the room operating mode (only lowers and heat:
raises the room temperature) · Operate the heating valve manually
· Has the actuator been disconnected from the valve?
Connect it!

Saving energy without sacrificing comfort

· During the day, do not allow the room temperature to exceed · Ensure that there are no curtains, furniture or other objects
21 °C. Each additional degree increases heating costs by 6 in front of the radiators. They reduce the emission of heat
to 7 % · Check heat energy consumption at regular intervals
· Guide values for room temperatures in living and working
spaces: If your plant uses a room temperature sensor (or room unit),
- During the day: Precomfort = 19 °C, Comfort = it should not be exposed to thermal disturbances since
20…22 °C these have an impact on the control function. For this rea-
- During the night: Economy = 14…18 °C son, following applies to the reference room where the
- Longer nonoccupancy times, such as holiday periods: sensor is located:
Protection = 10 °C. · Avoid drafts through open doors
Protect objects sensitive to low temperatures, such as · Avoid heat gains caused by people, machines, lighting,
plants! etc., near the sensor
· Air spaces for only short periods of time, with the windows · Ensure that air circulation near the sensor is not obstruct-
fully open ed by curtains, furniture or other objects
· Set thermostatic radiator valves in unoccupied rooms to · Set thermostatic radiator valves, if present, to their fully
their frost protection position open position
· Closed shutters and blinds reduce heat losses

Energy savings do not only conserve our natural resources, they also ensure active environmental protection!

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Building Technologies A fault has occurred 2015-03-31
 Info page boiler sequence
(Only with RMK770) Boiler address number
To go to the Info page: The boilers are numbered (max. 6). The lead boiler is highlight-
1. Return to the start page by pressing the ESC button. ed.
2. Press the INFO button. Release
3. Turn the OK knob until the required page appears. = boiler released; it is switched on / off depending on
the demand for heat from plant
The state of the boiler sequence is displayed as follows:
– = boiler locked

Boiler sequence Burner

Addr no 1 2 3 4 5 6 1 = burner or first burner stage on
2 = second burner stage on
Release: –
m = burner modulates
Burner: 1 – 1 m 2 1 – = burner off
Faults:
Faults
Boiler faults are indicated by the symbol. For general infor-
mation about faults, refer to page 11.

Info pages boiler sequence manager

(Only with RMK770)
Main flow temperature
To go to the Info page: · Actual value below the setpoint:
1. Return to the start page by pressing the ESC button. If the actual boiler temperature is lower than the setpoint for a
2. Press the INFO button. longer period of time, additional boilers will be released. The
3. Turn the OK knob until the required page appears. time of release depends especially on the differential of these
2 values.
State · Actual value above the setpoint:
On = heat generation on If the actual value remains above the setpoint for a longer pe-
Off = heat generation off riod of time, released boilers will be locked.
Cause Return temperature
Here, the reason for the state of heat generation is This is the temperature of the water returning to the boiler from
given. It should be considered that the boiler sequence the consumers (heating circuit, DHW circuit).
may be deactivated while the main pump is still running,
e.g. due to frost protection or overtemperature protec-
tion.

Info pages boiler / primary controller / main controller

To go to the Info pages: Primary controller or main controller
1. Return to the start page by pressing the ESC button. (Main controller only with RMH760B)
2. Press the INFO button. · Actual value of the flow temperature:
3. Turn the OK knob until the required page appears. This is the current temperature delivered by the heat ex-
Boilers 1…6 changer / heat source
(1…6: Several boilers only with RMK770) · Flow temperature setpoint:
For each boiler installed, the display shows: This is the temperature called for by the plant
· The actual value of the boiler temperature · State:
This is the current boiler temperature On = heat generation on
· The boiler temperature setpoint Off = heat generation off
This is the boiler temperature called for by the plant. · Cause:
· State: Here, the reason for the controller’s state is given (e.g. the
Enabled = heat generation released frost protection function is active).
Off = heat generation locked
· Cause:
Here, the reason for the boiler’s state is given (e.g.
protective boiler startup is active).

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Siemens Operating Instructions RMH760B, RMK770 CE1B3133_en

Building Technologies Info page boiler sequence 2015-03-31
 Other Info pages
To go to the Info pages: Display values (only with RMK770)
1. Return to the start page by pressing the ESC button. The actual outside temperature is displayed provided the meas-
2. Press the INFO button. ured value is delivered. Other displays are possible (depending
3. Turn the OK knob until the required page appears. on the design of your plant).
Time switch
Fault inputs (only with RMK770)
For description of the time switch and its settings, refer
Fault status messages at the fault inputs are displayed only if
to page 6.
configured.
Heating circuit
For description of the heating circuit and its settings, Device state
refer to page 5…7. The info pages contain: Displays in the event of fault:
· The actual value of the flow temperature · Source of fault (e.g. B1 pump. B1 stands for boiler 1, B2 for
· The flow temperature setpoint boiler 2, etc.)
· State · Error code (important for the heating engineer)
· Cause · Date and time of day the fault occurred
· The actual value of the room temperature (only if a Fault status message bus
room sensor is used) If your plant includes several interconnected devices, your
· The room temperature setpoint controller can also display faults of other controllers (depending
· The outside temperature (the details given in the on the configuration made).
following section “Display values” also apply here!)

Main menu boiler sequence manager

(Only with RMK770) Menu Inputs / setpoints
Menu Boiler sequence optg mode Displayed are the values acquired by the inputs and the associ-
· Preselection: ated setpoints and limit values.
Auto = automatic plant operation (normal situation)
Summer operation = boilers will only be released for Menu Outputs
DHW heating Displayed are for each output the state and thus the operating
Off = all boilers off; frost protection is ensured state (on / off, open / closed) of the controlled plant component.
If a plant component is not present, there will be no menu item
· State:
either.
On = heat generation on
Off = heat generation off Menu Limitations
· Cause: The current state of the limitations (Active / Inactive) is displayed
Here, the reason for the state of the boiler sequence (useful information for the heating engineer).
is given.

Path: Main menu > Boiler sequence manager

Main menu boilers (1…6)

(1…6: Several boilers only with RMK770)
Menu Flue gas measuring mode
Refer to page 14. Menu Inputs / setpoints
Displayed are the values acquired by the inputs and the associat-
Menu Boiler operating mode ed setpoints and limit values. In addition, the hours run counter
RMH760B: RMK770: and the burner start counter can be read.
Preselection: Preselection:
· Auto = automatic plant · Auto = automatic plant Menu Outputs
operation (normal situa- operation (normal situa- Displayed are for each output the state and thus the operating
tion) tion) state (on / off, open / closed) of the controlled plant component.
· Release DHW = boilers If a plant component is not present, there will be no menu item
will only be released for either.
DHW heating
Menu Limitations
· Off = boiler locked; frost · Off = boiler locked; frost
The current state of the limitations (Active / Inactive) is displayed
protection is ensured protection is ensured
(useful information for the heating engineer).
State:
· Enabled = heat generation released
· Off = heat generation locked Path: Main menu > Boiler …
Cause: Here, the reason for the boiler’s state is given

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Siemens Operating Instructions RMH760B, RMK770 CE1B3133_en

Building Technologies Other Info pages 2015-03-31
 Main menu primary controller / main controller
(Main controller only with RMH760B) Menu Inputs / setpoints
Menu Plant operation Displayed are the values acquired by the inputs and the associat-
· Preselection: ed setpoints and limit values.
On = primary controller / main controller released
Off = primary controller / main controller locked; valve Menu Outputs
closes; frost protection is ensured Displayed are for each output the state and thus the operating
· State: state (on / off, open / closed) of the controlled plant component.
On = primary controller / main controller released; If a plant component is not present, there will be no menu item
main flow temperature is controlled either.
Off = primary controller / main controller locked; valve
closes Menu Limitations
· Cause: The current state of the limitations (Active / Inactive) is displayed
Here, the reason for the controller’s state is given (useful information for the heating engineer).

Path: Main menu > Primary controller

Path: Main menu > Main controller

Flue gas measuring mode

To make a flue gas check, you can use the controller to Flue gas measuring mode contact
switch the boiler to flue gas measuring mode, which in- If configured, the flue gas measuring mode can also be
cludes: activated from a remote location.
The preselections are those described above.
Preselection
Switching on: Switching off:
By selecting On, a setpoint of 90 °C or a maximum limit for Caution! Here, the flue gas measuring mode must be deac-
the boiler is preset. The boiler pump or main pump runs. tivated manually!

Only with RMK770: The other boilers are switched off Release stage 2 / modulation
The 2nd stage or modulation can also be activated by enter-
Switching off: ing Yes. The preselections are those described above.
By selecting Off, the flue gas measuring mode is terminated. Actual value of boiler temperature
Otherwise, it will automatically be deactivated after 30 During the flue gas measuring mode, the current boiler
minutes. temperature is displayed.
Flue gas temperature
If configured, the current flue gas temperature is displayed.

Path: Main menu > Boiler… > Flue gas measuring mode

14 / 14 ã Siemens Switzerland Ltd., 2006 Subject to change

Siemens Operating Instructions RMH760B, RMK770 CE1B3133_en

Building Technologies Main menu primary controller / main controller 2015-03-31