Scheer MA 50 Manual

installation and maintenance manual
revised 01/2018 - V 5
innovative heat systems
MA-water heater
MA 50
MA 70
MA 50/70

www.scheer-heizsysteme.de
Dear customer,
thank you for choosing to install our MA-series into your vehicle.
With your purchase of the MA-series, you ensured for yourself, to have a heating system with currently the
highest technological standard and lowest fuel consumption.
The innovative and award-winning technology of our products with the Blue Eciency® burner, will
provide you with an especially user and maintenance friendly operation. This system will give you comfort
and highly reduced emissions.
The successfully proven blue-burner-system in“Duo-Block“ building technique, as well as the simple
operation over the boiler control eld, are very ecient and environmentally friendly.
Please contact us for any questions or further information you need.
Your SCHEER-team
SCHEER
Heizsysteme & Produktionstechnik GmbH
Chausseestr. 12 - 16
D-25797 Wöhrden
Germany
Tel.: [phone]
Fax: + 49 (0) 4839 453
[e-mail]
www.scheer-heizsysteme.de
Note:
Always carefully follow SCHEER installation and repair instruction and heed all WARNINGS.
SCHEER rejects any liability for defects and damage, which are due to installation or repair by
unauthorized and untrained persons.
introduction
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table of contents
introduction
table of contents
statutory regulations governing installation
warning and safety signs (denition)
type / model
identication plate
technical data
installation
rst start-up
overview MA-series
control box C
fuel supply / fuel lter
expansion tank (optional)
hybrid-heating with electric power (optional)
plate heat exchanger for hot freshwater (optional)
pipe group examples
pipe group components
• pump
• 2-way zone valve
• Liquidant
• boiler door cord
• door insulation
• boiler insulation
• breather
• safety group
• thermometers
dimensions MA-series
combustion air supply
exhaust pipe
electrical connections
electrical schematics of controller
electrical schematics of control box C
burner components
• oil pump motor
• oil pump
• radial fan
• fan regulator
• air pressure switch
• ignition transformer
• ame detector
• controller
• ame tube
• ignition electrodes
2
3
4
5
5
6
6
7
7
9
9
22
23
23
24
24
25
25
25
25
25
25
25
26
26
26
27
28
28
28
29
30
31
31
32
32
33
33
33
34
35
35
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maintenance
• maintenance preparation
• maintenance intervals
• CO2–value and pump pressure adjustment
• boiler cleaning
• oil lter change
• mixing cartridge control
• oil nozzle replacement
service protocol
service-kits
36
37
37
38
38
39
40
41
42
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1.1. Statutory regulations governing installation.
The heaters of the MA-series are type-tested and approved in accordance with the ECE Directives ECE R122 and
ECE R10 with the EG permit number: 058096 (ECE R10) and 000517 (ECE R122).
Installation is governed above all by the provisions in Annex VII of the ECE Directives.
Note:
The provisions of these Directives are binding within the territory governed by ECE Directives and
should similarly be observed in countries without specic regulations.
Extract from ECE Directives R122 Annex VII.
4. The heater must have a manufacturer’s label showing the manufacturer’s name, the model number and
type together with its rated output in kilowatts. The fuel type must also be stated and, where relevant, the
operating voltage and gas pressure.
7.1. A clearly visible indicator light within the operator’s eld of view shall inform when the combustion heater
is switched on or o.
Extract from ECE Directives R122 - Part I:
5.3. Regulations for installing combustion heaters and electrical heaters in vehicles.
5.3.1. Scope
5.3.1.1. According to section 5.3.1.2. heaters must be installed by the requirements of section 5.3..
5.3.2. Location of the heater.
5.3.2.1. Parts of the vehicles body and other components in the immediate vicinity of the heater must be
protected against excessive heat and the danger of contamination by fuel and oil.
5.3.2.2. The internal combustion heater must not pose a re hazard even when overheated. This requirement
is deemed to have been met if care is taken during installation to ensure an adequate distance from all parts, as
well as adequate ventilation and if re-resistant materials or heat shields are used.
5.3.2.3. In class M2 and M3 vehicles must not be installed in the passenger cabin. A device in a sealed cover,
which also meets the requirements set out in section 5.3.2.2, may be used, however.
5.3.2.4. The plate or a duplicate of the plate mentioned in Annex 7 section 4 must be still tted in such way that
it is still clearly legible when the heater has been installed in the vehicle.
5.3.2.5. When positioning the heater, all reasonable precautions must be taken to minimize the risk of personal
injury or damage to items in the vehicle.
statutory regulations governing installation
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warning and safety signs (denition)
The following table explains the used colors, words and their meaning used in this manual.
type / model
The MA-heating systems are approved for the use of „diesel“ and „heating oil“. Any other type of fuel for
operating have to be in advance approved by the manufacturer SCHEER. The heaters are designed for 230 Volts.
Heat current for the MA versions:
type/model output in kW Art.-Nr.
MA 50 50 0774875
MA 70 70 0774876
MA 50/70 50/70 0774877
classication of the signal word according to ANSI Z535.4
signal word identication of hazard
NOTICE
Notice: [this header is] preferred to address practices
not related to personal injury. Used for property
damage.
CAUTION! Caution: Indicate[s] a hazardous situation which, if not
avoided, could result in minor or moderate injury.
WARNING! Warning: Indicate[s] a hazardous situation which, if not
avoided, could result in death or serious injury.
DANGER! Danger: Indicate[s] a hazardous situation which, if not
avoided, will result in death or serious injury.
• The electrical power connection in the vehicle shall be by the battery of the vehicle via the inverter
approved for vehicles according to the ECE Regulations.
• Alternatively, the heater can also be supplied via a 230V direct feed (e.g. direct electrical supply / feed-
ing of the camping place
WARNING! Electrical hazard
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The model and identication plate must be protected from damage and must be clearly legible when the
heater is installed (otherwise a duplicate model and identication plate must be used).
technical data
identication plate
MA 50 MA 70 MA 50/70
operating power kW 50 70 50/70
dimensions (h / w / d) cm 62 / 47 / 98 62 / 47 / 98 62 / 47 / 98
weight kg 160 160 160
eciency % 94 94 94
fresh water heating optional (combi) plate heat exchanger
boiler volume l 108 108 108
fuel diesel / heating oil and GTL/BTL according to
CEN prEN 15940
oil nozzle 0,85 / 60°SD 1,25 / 80°SD 1,25 / 80°SD
rated voltage V 24 24 24
rated power consumption * W/h 42 42 42
exhaust temperature °C
°F
145 - 200
293 - 392
145 - 200
293 - 392
145 - 200
293 - 392
* assumption: 10 min. burner operation within one heating hour including
boiler circulating pump. Without pumps for other heating circuits.
Fig.: identication plate
Made in Germany
HEIZGERÄT Typ: MH 10/17
Spannung / EL Leistung 230V / 250W
Wärmestrom max. 17 kW
Brennsto Diesel / Heizöl
zul. Betreibsüberdruck 3 bar
Artikel. Nr. Ausf. Fabr. Nr.
Inbetriebnahmejahr 2016 2017 2018
E1 122R-000517
E1 ECE-R10-058096
example : identication plate
E1E1
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installation
rst start-up
Note:
Refer to the safety instructions in the operating and maintenance manual!
Read and understand all operating and maintenance instructions before starting the heater.
After installing the heater bleed the water system and the fuel supply system carefully. Follow the instructions
supplied be the vehicle manufacturer for this purpose.
Check the electrical connections for the correct polarity.
Conduct a test run of the heater to check all the water and fuel connections for leaks and ensure that they are
tight and secure. In case of an error during the test run or normal operation refer to the trouble-shooting table
on page 20 and x it.
Tighten all pipe union connections after the rst full heat up operation.
Note:
Check the installation situation of the relevant vehicle type.
Installation position:
The heater must be installed in as low a position as possible to allow the heater and circulating pump to be
bled automatically. This is particularly important as the circulating pump is not self-priming.
If it is not possible to install the heater in the vehicle‘s engine bay it may be installed in a box. The installation
box must have sucient external ventilation to ensure that a maximum temperature of 85 °C (185 °F) is not
exceeded inside the box.
Keep in mind the space required for servicing accessibility (for instance for removing the combustion chamber).
•
Not following the required installation conditions will lead to the loss of all warranty and liability
claims!
• Installation must comply with governing statutory regulations listed on page 4.
• If the water heater is to be operated in a separately installed heating system, prior to installation an
installation planning report must always be submitted to SCHEER for approval. If this approval is not
obtained, all warranty and liability claims will be void.
NOTICE Cancelation of all warranty and liability claims!
Improper installation or improper repair can cause a re or the leakage of deadly carbon monoxide
leading to serious injury or death.
• The person to install and repair the heating system must have completed a SCHEER training course.
• Always follow all installation and repair instruction.
• Heed all warning and safety signs.
• All required technical documentations, tools, and equipment must be available for installation and
repair.
DANGER! Death or serious injury due to improper installation or repair.
Note: SCHEER rejects any liability for defects and damage, which are due to installation or repair by
unauthorized and untrained persons.
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overview MA-series
burner
Blue Eciency®
integrated electrical
heater (optional)
expansion tank
(optional)
connection for
fresh air intake
control box C
The control panel is divided into three areas:
Status displays, operating program sequence and service area.
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status display
control box C
In the status displays, all lights should light up continuously in the operating state.
The polarity lights up continuously if the electrical supply is connected in the correct phase. If the polarity is not
correctly applied, operation is not negatively inuenced by the electrical connection. Nevertheless, service or
monitoring tasks cannot be carried out properly if the connection is incorrect.
The water level indicator lights up continuiously if there is sucient water in the boiler. If the operating indi-
cator does not light up, there is insucient water in the system! If the boiler is red without water, it will be
damaged. Check the water level, please. If there is suvvicient water in the system, contact SCHEER to be able to
bridge the water level switch using emergency operation.
pump control
The pump control inducates that the heating water circulates in the boiler via the heating curcuit pump and
the heat can be gradually transferred into the building after uniform heating of the boiler via the mixer.
operating program sequence
The display of the operating program sequence shows the user the step-by-step progress of operation.
burner requirement
First of all, the burner requirement shows that heat is required and the burner should now start. For this purpo-
se, som sequences are connectet upstream.
oil ventilation
The oil venting is activated for 60 seconds.
oil preheater
The oil preheater is then switched on. Depending on the temperature of the fuel oil, preheating can take die-
rent lenghths of time. In case of very cold fuel oil and the rst operation of the burner (after a long interruption)
this can take up to two minutes. Only then does burner operation start when the boiler is dired and the burner
operating light is acitvated.
boiler protection acitvated
With boiler protection acitvated, it is indicated that a permanent minimum heat level in the boiler return ow is
noch reached an thus recurring condensation does not occur in the boiler body.
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control box C
service area
The service area displays are intended for service work.
Solenoid valve II in continuous operation
The display of the solenoid valve II shows that it is activated in continuous operation. Activation is the user‘s
own responsibility and requires the separation of the corresponding lead seal and switch assignment after
consultation with SCHEER.
oil ventilation
If the burner is operated without oil venting, this can be bridged for servicing. This is the user‘s own responsibi-
lity and requires the separation of the corresponding lead seal and switch assignment after consultation with
SCHEER.
Emergency operation bridging water level monitor
As an emergency operation, it is entended that the machine can also be operated if the water level monitor is
defective and there is sucient water in the boiler. Only in this case is it possible to bridge the water level moni-
tor until it is repaired. This is the user‘s own responsibility and requires the separation of the corresponding lead
and switching of the switch after consultation with SCHEER.
Emergency operation without controller
Emergency operation without controller can be carried out at the user‘s own responsibility and requires discon-
nection of the corresponding lead seal and switching of the switch after consultation with SCHEER.
Setting the instrument function
• Use the keys and to set the value in the specied range of values.
• Conrm settings with P
parameter signicance range of values
from ...factory-made...to
SP target value
This value is controlled by
50 ...0.0 ... 80
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on/o
switch
fuse holder
reset safety-temperature-limiter (STL) button
warning lamp safety-temperature-limiter (STL)
warning lamp burner
reset burner button
power on
using the on/o switch.
remote control
room controller (optional)
hybrid-heating
with additional electrical heater (optional)
power o
using the on/o switch.
altitude adjustment
standard equipment
vehicles with hazardous material (ADR) permission
manual EMERGENCY OFF switch for the whole
heating system.
• NOTICE
Any other type of power module or control box have to be approved by the
manufacturer SCHEER
control box C power module
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control box C warning lamp
warning lamp: safety-temperature-limiter (STL)
If the lamp lights, the (STL) was triggered by a too high operating temperature.
• Let the heating system cool down.
• Push the reset (STL) button in. (followed by a click sound)
• The heating system is ready to start again.
In case the (STL) is triggered again, let the system be repaired by a SHEER trained person.
warning lamp: burner
If the lamp lights, it was triggered by a malfunction of the burner.
• Press and hold the burner suppressor button briey for about 1 second, not longer than 2 seconds.
• The warning lamp of the burner will turn o and the burner is reset.
If the burner should switch to malfunction twice, please have a repair carried out by your specialist company.
power module
• NOTICE
Repeated emtying of fueltank can cause damage to the burner!
If the heater is operated without fuel it can cause damage (e. g. on the oil nozzle).
• NOTICE
Other network modules and control boxes may only be used in coordination with the ma-
nufacturer SCHEER.
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Heizen auf Komfortsollwert Ferienfunktion aktiv
Heizen auf Reduziertsollwert Bezug auf Heizkreis
Heizen auf Frostschutzsollwert Wartung / Sonderfunktionen
Kühlen auf Kühlsollwert Fehlermeldungen
Laufender Prozess – bitte warten Infoebene aktiviert
Batterie wechseln Programmierung aktiviert
Brenner in Betrieb (nur Öl-
/Gaskessel); Aktive Brennerstufen Heizung vorübergehend
ausgeschaltet
ECO Funktion aktiv
Verdichter in Betrieb (nur WP)
4
1 2
3
5 6 7 8 9
1 hot fresh water selection 6 navigation and setting knob
2 space heating selection 7 conrm setting
3 display information 8 manual operation
4 service socket (BSB) 9 chimney sweep function
5 exit settings (for emission test)
display
operator unit
Reference of signs and symbols:
control box C overview
1 2
3
4 5 6 7 8 9
heating to comfort set point
heating to reduced set point
heating o, frost protection on
air condition (n.a.)
processing - please wait
change battery
burner operating
burner active
compressor operating (n.a.)
holiday function
reference to heating circuit
maintenance
special operation
error messages
info level activated
programming activated
heating temporarily turn o
ECO function active
• NOTICE
Any other type of power module or boiler controller have to be approved by the
manufacturer SCHEER
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control box C settings
Selection of space heating mode
This setting is used to switch between the dierent
operating modes. The selection made is indicated by a
bar which appears below the respective symbol.
Automatic mode
Automatic mode controls the room temperature according to
the time program.
Characteristics of automatic mode:
- Heating mode according to the time program
- Temperature set points according to the heating program
„Comfort set point“
or„Reduced set point“
- Protective functions active
- Automatic summer / winter changeover (ECO functions)
Continuous operation or
Continuous operation maintains the room temperature at the
selected operating level.
Heating to Comfort set point
Heating to Reduced set point
Characteristics of continuous operation:
- Heating mode with no time program
- Protective functions active
- Automatic summer / winter changeover (ECO functions)
and 24-hours heating limit inactive in the case of
continuous operation with Comfort set point
Protection
When using protection mode, the heating system is o, but it
remains protected against frost (frost protection temperature)
provided there is no power failure.
Characteristics of Protection:
- Heating o
- Temperature according to frost protection
- Protective functions active
- Automatic summer / winter changeover (ECO functions)
and automatic 24-hours heating limit active
Selecting the DHW heating mode
The button is used to switch DHW heating mode on and o.
The selection made is indicated by a bar which appears
below the respective symbol.
DHW heating mode
- On: The DHW is heated according to the selected
switching program.
- O: No DHW heating, but the protective function is active.
DHW push
Triggering is eected by keeping the DHW operating
mode button on the operator or room unit depressed
for at least 3 seconds.
It can also be started when:
- The operating mode is“O“
- Operating mode changeover acts via H1 or
centrally (LPB)
- All heating circuits use the holiday function
Adjusting the room temperature set point
Turn the setting knob to increase or decrease the Comfort
set point
For the Reduced set point
- press OK,
- Select operating page “Heating circuit“ and
- adjust the“Reduced set point“
After each readjustment, wait at least 2 hours, allowing the
room temperature to adapt.
Displaying information
Various data can be displayed by pressing the info button.
Error messages
If this symbol appears, an error in the plant has occurred.
Press the info button and read further information.
Maintenance or special operation
If this symbol appears, a maintenance alarm is delivered or
the plant has changed to special mode. Press the info
button and read further information.
Manual operation
When manual operation is active, the relays are no longer
energized and de-energized according to the control state,
but are set to a predened manual operation state
depending on their function. The burner relay energized in
manual control can be de-energized by the electronic
temperature controller (TR). After manual control has been
activated, a change to the basic display must be made.
There, the maintenance / special mode symbol
appears. Press the info button to switch to info display
“Manual mode“, where the set point can be adjusted.
Chimney sweep function
The chimney sweep function is activated by a short press
(maximum 3 seconds) on the chimney sweep button. This
function produces the operating state required to make
emission measurements (ue gas).
Heating curve slope
As the heating curve slope is raised, the ow temperature
increases the quicker the lower the outside temperature or,
in other words, if the room temperature is not correct at low
outside temperatures but correct at higher outside tempera-
tures, the heating curve slope requires readjustment.
Increase adjustment: Raises the ow temperature,
especially when outside
temperatures are low.
Decrease adjustment: Lowers the ow temperature,
especially when outside
temperatures are low.
The programmed heating curve is based on a room set point
of 20 °C. If the room set point is adjusted, the heating curve
automatically adapts to the new value.
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control box C programming
Selection of space heating mode
This setting is used to switch between the dierent
operating modes. The selection made is indicated by a
bar which appears below the respective symbol.
Automatic mode
Automatic mode controls the room temperature according to
the time program.
Characteristics of automatic mode:
- Heating mode according to the time program
- Temperature set points according to the heating program
„Comfort set point“
or„Reduced set point“
- Protective functions active
- Automatic summer / winter changeover (ECO functions)
Continuous operation or
Continuous operation maintains the room temperature at the
selected operating level.
Heating to Comfort set point
Heating to Reduced set point
Characteristics of continuous operation:
- Heating mode with no time program
- Protective functions active
- Automatic summer / winter changeover (ECO functions)
and 24-hours heating limit inactive in the case of
continuous operation with Comfort set point
Protection
When using protection mode, the heating system is o, but it
remains protected against frost (frost protection temperature)
provided there is no power failure.
Characteristics of Protection:
- Heating o
- Temperature according to frost protection
- Protective functions active
- Automatic summer / winter changeover (ECO functions)
and automatic 24-hours heating limit active
Selecting the DHW heating mode
The button is used to switch DHW heating mode on and o.
The selection made is indicated by a bar which appears
below the respective symbol.
DHW heating mode
- On: The DHW is heated according to the selected
switching program.
- O: No DHW heating, but the protective function is active.
DHW push
Triggering is eected by keeping the DHW operating
mode button on the operator or room unit depressed
for at least 3 seconds.
It can also be started when:
- The operating mode is“O“
- Operating mode changeover acts via H1 or
centrally (LPB)
- All heating circuits use the holiday function
Adjusting the room temperature set point
Turn the setting knob to increase or decrease the Comfort
set point
For the Reduced set point
- press OK,
- Select operating page “Heating circuit“ and
- adjust the“Reduced set point“
After each readjustment, wait at least 2 hours, allowing the
room temperature to adapt.
Displaying information
Various data can be displayed by pressing the info button.
Error messages
If this symbol appears, an error in the plant has occurred.
Press the info button and read further information.
Maintenance or special operation
If this symbol appears, a maintenance alarm is delivered or
the plant has changed to special mode. Press the info
button and read further information.
Manual operation
When manual operation is active, the relays are no longer
energized and de-energized according to the control state,
but are set to a predened manual operation state
depending on their function. The burner relay energized in
manual control can be de-energized by the electronic
temperature controller (TR). After manual control has been
activated, a change to the basic display must be made.
There, the maintenance / special mode symbol
appears. Press the info button to switch to info display
“Manual mode“, where the set point can be adjusted.
Chimney sweep function
The chimney sweep function is activated by a short press
(maximum 3 seconds) on the chimney sweep button. This
function produces the operating state required to make
emission measurements (ue gas).
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control box C programming spreadsheet
Operating line
User level
Function
Default value
Min
Max
Unit
Time of day and date
1 E Hours/minutes - 00:00 23:59 hh:mm
2 E Day/month - 01.01 31.12 tt.mm
3 E Year - 2004 2099 jjjj
Operator section
20 E Language German Eng., French, Ital., Dutch, Esp., Port., Dansk, Suomi, Svenska
21 E Units °C, bar °F, PSI
Time prog heating circuit 1
500 E Preselection
Mo-Su Mo-Fr Sa-Su Mo Tu We Th Fr Sa Su Mo-Su -
501 E 1st phase on 06:00 00:00 24:00:00 hh:mm
502 E 1st phase o 22:00 00:00 24:00:00 hh:mm
503 E 2nd phase on 24:00 00:00 24:00:00 hh:mm
504 E 2nd phase o 24:00 00:00 24:00:00 hh:mm
505 E 3rd phase on 24:00 00:00 24:00:00 hh:mm
506 E 3rd phase o 24:00 00:00 24:00:00 hh:mm
516 E Standard values No Yes No -
Time prog heating circuit 2
520 ... 536 E like time prog heating circuit 1
Time program 3 / HCP
540 ... 556 E like time prog heating circuit 1
Time program 4 / DHW
560 ... 576 E like time prog heating circuit 1
Time program 5
600 ... 616 E like time prog heating circuit 1
Holidays heating circuit 1
641 E Preselection Period 1...8 Period 1 -
642 E Start -.- 01. 01 31. 12 tt.mm
643 E End -.- 01. 01 31. 12 tt.mm
648 E operating level Frost protection Reduced frost protection -
Holidays heating circuit 2
651 ... 658 E like holidays heating circuit 1
Holidays heating circuit P
661 ... 668 E like holidays heating circuit 1
Heating circuit 1
710 E Comfort cooling set point 20.0 Operating line 712 Operating line 716 °C
712 E Reduced set point 16 Operating line 714 Operating line 710 °C
714 E Frost protection set point 10.0 4 Operating line 712 °C
720 E Heating curve slope 1.50 0.10 4.00 -
730 E Summer/winter heating limit 18 --- / 8 30 °C
Heating circuit 2
1010 ... 1030 E like heating circuit 1
Heating circuit P
1310 ... 1330 E like heating circuit 1
DHW
1610 E Nominal set point 55 40 65 °C
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Default display:
Actual room temperature
2
1
3 4 5
22.5 °C
control box C
1 control knob
2 display
3 navigation bar
4 status bar
5 work area
control box C
The display is structured with a navigation bar, status bar, and work area.
The overview page with navigation bar is displayed when you activate the device. The navigation bar provides
for direct access to the main functions.
If you want to query information on heating, ventilation, and hot fresh water, turn the control knob and select
the desired topic from navigation.
To adjust values, press the knob after selecting the desired main function. Then select the value you want to
adjust in the work area.
Operating objects may have three display states:
Time-out functions:
editing time-out: 5 seconds A changed setting reverts to the original state if not conrmed within
this period.
locking time-out: 1 minute Certain plant states are displayed in the foreground, e.g. special mode
page. However, users are still able to go to any page and set values.
The foreground page returns after this period without operator
intervention.
operating time-out: 8 minutes After this period without operation, display automatically returns to the
start page.
room controller (optional) overview
room controller operation
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navigation topics room controller C
control box C navigating and setting room controller C
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energy saving room controller C
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