Eberspächer
Technical description
Installation instructions
Operating instructions
Maintenance instructions
J. Eberspächer
GmbH & Co. KG
Eberspächerstr. 24
D - 73730 Esslingen
Telefon (zentral)
(0711) 939 - 00
Telefax
(0711) 939 - 0500
www.eberspaecher.com
Water heater for petrol, operating Water heater for diesel fuel, operating
independently of the engine independently of the engine
Heater Order no. Heater Order no.
HYDRONIC B 4 W SC  12 volt 20 1861 05 00 00 HYDRONIC D 4 W SC  12 volt 25 2385 05 00 00
as complete package as complete package
HYDRONIC B 5 W SC  12 volt 20 1863 05 00 00 HYDRONIC D 5 W SC  12 volt 25 2390 05 00 00
as complete package as complete package
Please give this manual to the customer
after installation of the heater.
20 1861 90 99 14 EN 07.2006 Subject to changes Printed in Germany © J. Eberspächer GmbH & Co. KG
1 Introduction
Contents
Chapter Title Contents Page
1
Introduction " Contents ................................................................................................ 2
" Concept of this manual ......................................................................... 3
" Special text structure, presentation and picture symbols ..................... 4
" Important information before starting work ............................................ 4
" Statutory regulations ......................................................................... 5, 6
" Safety instructions for installation and operation .............................. 6, 7
" Accident prevention .............................................................................. 7
2
Product information " Scope of supply petrol heaters .......................................................... 8, 9
" Scope of supply diesel heaters ..................................................... 10, 11
" Technical data petrol heaters .............................................................. 12
" Technical data diesel heaters .............................................................. 13
" Main dimensions .................................................................................. 14
3
Installation " Installation and location ...................................................................... 15
" Possible installation positions ............................................................. 16
" Mounting and fastening ....................................................................... 16
" Nameplate ........................................................................................... 17
" Connection to the cooling water circuit ....................................... 18  21
" Exhaust system ................................................................................... 22
" Combustion air system ........................................................................ 23
" Fuel supply petrol heaters ........................................................... 25  27
" Fuel supply diesel heaters .......................................................... 28  30
4
Operation and " Operating instructions / important information for operation ............... 31
function " Initial commissioning ........................................................................... 31
" Description of functions ...................................................................... 31
" Control and safety devices ................................................................. 32
5
Electrical system " Heater wiring ........................................................................................ 33
" Parts list for heater circuit diagram .................................................... 33
" Heater circuit diagram ........................................................................ 34
" Parts lists for control units circuit diagrams ...................................... 35
" Control units circuit diagrams ...................................................... 36  41
6
Troubleshooting " In case of faults, please check the following points ........................... 42
Maintenance " Troubleshooting ................................................................................... 42
Service " Maintenance instructions .................................................................... 42
" Service ................................................................................................ 42
7
Environment " Certification ......................................................................................... 43
" Disposal ............................................................................................... 43
" EU Declaration of Conformity ............................................................... 43
8
Lists " List of key words ........................................................................... 44, 45
" List of abbreviations ............................................................................ 45
2
1 Introduction
Concept of this manual
This manual aims to support the service company
installing the heater and to provide the user with all
important information about the heater.
The manual has been divided into 8 chapters to make
it easier to find the corresponding information quickly.
Introduction Electric system
1 5
Here you will find important introductory Here you will find information about the
information about installation of the heater electronic system and electronic components
and about the structure of the manual. of the heater.
Product information Troubleshooting / maintenance / service
2 6
Here you will find information about the scope This section contains information on possible
of supply, the technical data and the faults and malfunctions, troubleshooting,
dimensions of the heater. maintenance and the service hotline.
Installation Environment
3 7
Here you will find important information and Here you will find information about certification
instructions referring to installation of the and disposal of the heater together with the EU
heater. Declaration of Conformity.
Operation and function Lists
4 8
Here you will find information about the Here you will find the key word list and
operation and function of the heater. abbreviations list.
3
1 Introduction
Special text structure, presentation and Important information before
picture symbols starting work
This manual uses special text structures and picture Range of application of the heater
symbols to emphasise different contents.
Please refer to the examples below for the The water heater operating independently of an engine
corresponding meanings and associated actions. is intended for installation in the following vehicles,
depending on its heating output:
" Vehicles of all kinds
Special structure and presentations " Construction machinery
" Agricultural machinery
A dot (" ) indicates a list which is started by a " Boats, ships and yachts
heading. If an indented dash ( ) follows a dot, this list
is subordinate to the dot.
Please note!
Installation of the heater is not permitted in vehicles
Picture symbols used for the transport of dangerous goods as per
ADR.
Regulation!
This picture symbol with the remark  Regulation Purpose of the heater
refers to a statutory regulation. Failure to comply with (using the vehicle heat exchanger)
this regulation results in expiry of the type permit for
the heater and preclusion of any guarantee and " Pre-heating, de-misting windows
liability claims on J. Eberspächer GmbH & Co. KG and " Heating and keeping the following warm:
its associated companies.  Driver and working cabs
 Freight compartments
 Ship s cabins
Danger!  Passenger and crew compartments
This picture symbol with the remark  Danger! refers  Vehicle engines and units
to the risk of a fatal danger to life and limb. Under
certain circumstances, failure to comply with these On account of its functional purpose, the heater is not
instructions can result in severe or life-threatening permitted for the following applications:
.
injuries.. " Long-term continuous operation, e.g. for pre-heating
.
.
.
and heating of:
 Residential rooms
Caution!  Garages
This picture symbol with the remark  Caution! refers  Work huts, weekend homes and hunting huts
to a dangerous situation for a person and / or the  Houseboats, etc.
product.
Failure to comply with these instructions can result in
injuries to people and / or damage to machinery.
Caution!
Safety instructions for application and
proper purpose
Please note!
These remarks contain application recommendations " The heater must only be used and operated for the
and useful tips for installation of the heater. range of application stated by the manufacturer in
compliance with the  Operating instructions
included with every heater.
4
1 Introduction
Statutory regulations
" Fuel supply
The Federal Road Transport Directorate has issued an
 The fuel intake connection must not be located in
"EC type approval" and an "EMC type approval" for the
the passenger compartment and must be sealed
heater for installation in motor vehicles and with the
with a properly closing lid to prevent any fuel leaks.
following official type approval marks, noted on the
heater name plate.
 In heaters for liquid fuel where the heater fuel is
separate from the vehicle fuel, the type of fuel and
HYDRONIC EC- e1 00 0023
intake connection must be clearly identified.
EMC- e1 021075
 A warning sign is to be fixed to the intake
connection indicating that the heater must be
switched off before refuelling.
Regulation!
Directive 2001 / 56 / EU of the European Parliament
and the Council
" Exhaust system
 The exhaust outlet must be arranged so as to
" Arrangement of the heater
prevent any penetration of exhaust fumes into the
 Parts of the structure and other components near
vehicle interior through the ventilation system,
the heater must be protected from excess heat
warm air intakes or open windows.
exposure and possible contamination from fuel or
oil.
" Combustion air intake
 The heater must not pose a fire hazard even when  The air for the heater combustion chamber must
it overheats.
not be sucked in from the passenger compartment
This requirement is deemed to be fulfilled when
of the vehicle.
adequate clearance to all parts is observed during
installation, sufficient ventilation is provided and  The air intake must be arranged or protected in
fire-proof materials or heat plates are used.
such a way that it cannot be blocked by other
objects.
 The heater must not be located in the passenger
compartment in vehicles of class M1, M2, M3 and N.
A unit may however be used in a hermetically sealed
" Operating status display
housing which also corresponds to the conditions  A clearly visible operating display in the user s
stated above.
field of vision must indicate when the heater is
switched on and off.
 The factory nameplate or duplicate must be affixed
so that it can still be easily read when the heater
is installed in the vehicle.
 All appropriate precautions must be taken when
arranging the heater to minimise the risk of injuries
to persons or damage to other property.
5
1 Introduction
Statutory regulations Safety instructions for installation
and operation
Please note!
" Compliance with the statutory regulations and Danger!
safety instructions is prerequisite for guarantee Risk of injury, fire and poisoning
and liability claims. " Disconnect the vehicle battery before starting any
Failure to comply with the statutory regulations and kind of work.
safety instructions and incorrect repairs even when
using original spare parts make the guarantee null " Before working on the heater, switch the heater off
and void and preclude any liability for and let all hot components cool down.
J. Eberspächer GmbH & Co. KG.
" The heater must not be operated in enclosed rooms,
" Subsequent installation of this heater must comply e.g. in the garage or multi-storey car park.
with these installation instructions.
" The statutory regulations are binding and must also
Caution!
be observed in countries which do not have any
Safety instructions for installation and operation
special regulations.
" The heater must only be installed by a JE partner
authorised by the manufacturer according to the
" When the heater is to be installed in vehicles not
instructions in this manual and possibly according to
subject to the German Ordinance for the Regis-
special installation recommendations; the same
tration of Motor Vehicles (StVZO), for example
applies to any repairs to be carried out in the case
ships, the specially valid regulations and
or repairs or guarantee claims.
installation instructions for these special
applications must be observed.
" Repairs by non-authorised third-parties or with not
original spare parts are dangerous and therefore not
" Installation of the heater in special vehicles must
allowed. They result in expiry of the type permit of
comply with the regulations applying to such
the heater; consequently, when installed in motor
vehicles.
vehicles they can cause expiry of the vehicle
operating licence.
" Other installation requirements are contained in the
corresponding sections of this manual.
" The following measures are not allowed:
 Changes to components relevant to the heater.
 Use of third-party components not approved by
J. Eberspächer GmbH & Co. KG.
 Nonconformities in installation or operation from
the statutory regulations, safety instructions or
specifications relevant to safe operation as stated
in the installation instructions and operating
instructions. This applies in particular to the
electrical wiring, fuel supply, combustion air
system and exhaust system.
" Only original accessories and original spare parts
must be used during installation or repairs.
6
1 Introduction
Safety instructions for installation
and operation
Caution!
Safety instructions for installation and operation
" Only original accessories and original spare parts " When topping up the coolant, only use the coolant
must be used during installation or repairs. permitted by the vehicle manufacturer, see the
vehicle operating manual. Any blending with
" Only the controls approved by Eberspächer may be unpermitted coolant can cause damage to the
used to operate the heater. engine and heater.
The use of other controls can result in malfunctions.
" After-running of the heater must not be interrupted
" Before the heater is installed again in another prematurely e.g. by pressing the battery
vehicle, rinse the heater parts carrying water with disconnecting switch, apart from in the case of an
clear water. emergency stop.
" When carrying out electric welding on the vehicle,
the plus pole cable at the battery should be
disconnected and placed at ground to protect the
Accident prevention
controller.
General accident prevention regulations and the
" The heater must not be operated where there is a
corresponding workshop and operation safety
risk of an accumulation of flammable vapours or
instructions are to be observed.
dust, for example close to
 fuel depot
 coal depot
 wood depot
 grain depots etc.
" The heater must be switched off when refuelling.
" When the heater is mounted in a safety housing
etc., the installation compartment of the heater is
not a stowage compartment and must be kept clear.
In particular fuel canisters, oil cans, spray cans,
gas cartridges, fire extinguishers, cleaning rags,
items of clothing, paper etc. must not be stored or
transported on or next to the heater.
" Defect fuses must only be replaced by fuses with
the prescribed rating.
" If fuel leaks from the heater fuel system, arrange
for the damage to be repaired immediately by a
JE service partner.
7
2 Product information
Scope of supply for petrol heaters
Parts list for the picture  Scope of supply
Quantity / Designation Order number
on page 9
Petrol heaters
1 HYDRONIC B 4 W SC  12 V 20 1861 05 00 00
Scope of supply for petrol heater
as complete package*
Picture No. Designation
1 HYDRONIC B 5 W SC  12 V 20 1863 05 00 00
1 Heater
as complete package*
2 Dosing pump
3 Exhaust silencer
To be ordered separately:
4 Cable tree, heater
1 Control unit** 
5 Heater bracket
6 Water hose
7 Flexible exhaust pipe
* Complete package contains:
8 Cable tie
1 Heater
9 Bracket, dosing pump
1 Installation kit
10 Pipe, 4 x 1
11 Combustion air hose
** Control units see price list / accessories catalogue.
12 Hose, 3.5 x 3
13 Pipe, 4 x 1.25
14 Screw M6 x 67
15 Tank withdrawal device
16 Cable harness blower
17 Cable harness dosing pump
18 Bracket
19 Combined bracket
Lead harnesses
A Connection of control units
B Vehicle blower control
C Positive supply connection
D Negative supply connection
E Connection to terminal 85 (1-pin, brown)
F Connection to terminal 86 (1-pin, red/black)
G Diagnosis query (1-pin, blue/white)
H Spare connector and seal
(required if shortening lead)
I Positive power supply connection - blower relay
Please note!
" Parts without picture number are small parts and
packed in a bag.
" Please consult the additional parts catalogue if
any other parts are required for installation.
8
2 Product information
Scope of supply for petrol heaters
9
2 Product information
Scope of supply for diesel heaters
Parts list for the picture  Scope of supply
Quantity / Designation Order number
on page 11
Diesel heaters
1 HYDRONIC D 4 W SC  12 V 25 2385 05 00 00
Scope of supply for diesel heater
as complete package*
Picture No. Designation
1 HYDRONIC D 5 W SC  12 V 25 2390 05 00 00
1 Heater
as complete package*
2 Exhaust silencer
3 Cable tree, heater
To be ordered separately:
4 Heater bracket
1 Control unit* 
5 Water hose
6 Flexible exhaust pipe
7 Cable tie
** Complete package contains:
8 Combustion air hose
1 Heater
9 Pipe, 4 x 1
1 Installation kit
10 Screw M6 x 67
11 Tank withdrawal device
* Control units see price list / accessories catalogue.
12 Cable harness blower
13 Combined bracket
Lead harnesses
A Connection of control units
B Vehicle blower control
C Positive supply connection
D Negative supply connection
E Connection to terminal 85 (1-pin, brown)
F Connection to terminal 86 (1-pin, red/black)
G Diagnosis query (1-pin, blue/white)
H Positive power supply connection - blower relay
Please note!
" Parts without picture number are small parts and
packed in a bag.
" Please consult the additional parts catalogue if
any other parts are required for installation.
10
2 Product information
Scope of supply for diesel heaters
11
2 Product information
Technical data HYDRONIC B 4 W SC HYDRONIC B 5 W SC
Technical data
Technical data / petrol heaters
Technical data
Technical data
Heating medium Water, cooling fluid
Control of the heat flow Large Small Large Small
Heat flow (watt) 4300 1500 5000 1500
Fuel consumption (l/h) 0.6 0.2 0.69 0.2
Mean electr. power (watt)
in operation 48 22 50 22
at start 120
Rated voltage 12 volt
Operating range
" Lower voltage limit: 10.2 volt
An undervoltage protector installed in the
control box switches off the heater when the
voltage limit is reached.
" Upper voltage limit:
An overvoltage protector installed in the
control box switches off the heater when the 16 volt
voltage limit is reached.
Tolerable operating pressure up to 2.5 bar overpressure
Water volume in the heater 0.18 l
Flow rate of the water pump at 0.1 bar 900 l/h Ä…100 l/h
Minimum water flow rate of the heater 250 l/h
Fuel  see also  fuel quality petrol heaters Commercially available petrol
page 30 (DIN EN 228)
Tolerable operating temperature Operation Not running
Heater  40 °C to +80 °C  40 °C to +125 °C
Control unit  40 °C to +80 °C  40 °C to +105 °C
Dosing pump  40 °C to +20 °C  40 °C to +105 °C
Interference suppression class 5
DIN 57879 / Part1 VDE 0879
Weight without cooling fluid and add on pieces approx. 2.7 kg
Please note!
Caution! Provided no limit values are given, the technical data
Safety instructions for technical data! listed is subject to the tolerances usually applicable to
Failure to comply with the technical data heaters of Ä…10% for nominal voltage, ambient tempe-
can result in malfunctions. rature 20 °C and reference altitude Esslingen.
12
2 Product information
Technical data HYDRONIC D 4 W SC HYDRONIC D 5 W SC
Technical data
Technical data / diesel heaters
Technical data
Technical data
Heating medium Water, cooling fluid
Control of the heat flow Large Small Large Small
Heat flow (watt) 4300 2400 5000 2400
Fuel consumption (l/h) 0.53 0.27 0.62 0.27
Mean electr. power (watt)
in operation 48 23 50 23
at start 120
Rated voltage 12 volt
Operating range
" Lower voltage limit:
An undervoltage protector installed in the 10.2 volt
control box switches off the heater when the
voltage limit is reached.
" Upper voltage limit:
An overvoltage protector installed in the
control box switches off the heater when the 16 volt
voltage limit is reached.
Tolerable operating pressure up to 2.5 bar overpressure
Water volume in the heater 0.18 l
Flow rate of the water pump at 0.1 bar 900 l/h Ä…100 l/h
Minimum water flow rate of the heater 250 l/h
Fuel  see also  fuel quality diesel heaters Commercially available diesel
page 30 (DIN EN 590)
Tolerable operating temperature Operation Not running
Heater  40 °C to +80 °C  40 °C to +105 °C
Control unit  40 °C to +80 °C  40 °C to +105 °C
Dosing pump  40 °C to +20 °C  40 °C to +105 °C
Interference suppression class 5
DIN 57879 / Part 1 VDE 0879
Weight without cooling fluid and add on pieces approx. 2.9 kg
Please note!
Caution! Provided no limit values are given, the technical data
Safety instructions for technical data! listed is subject to the tolerances usually applicable to
Failure to comply with the technical data heaters of Ä…10% for nominal voltage, ambient tempe-
can result in malfunctions. rature 20 °C and reference altitude Esslingen.
13
2 Product information
Main dimensions petrol heater
WE Water inlet
WA Water outlet
A Exhaust
B Fuel
V Combustion air
Main dimensions diesel heater
WE Water inlet
WA Water outlet
A Exhaust
B Fuel
V Combustion air
14
3 Installation
Installation location
The installation location for the heater is the engine
compartment. The heater must be mounted below the
min. cooling water level (compensation tank, cooler,
vehicle heat exchanger) for automatic venting of the
heat exchanger of the heater and the water pump.
Please note!
" The regulations and safety instructions to be
observed for this chapter are stated on page 4  7.
" The installation suggestions made in the
installation instructions are examples. Other
installation locations are possible if they
correspond to the installation requirements stated
in these installation instructions.
" Other installation information (e.g. for boats and ships)
is available from the manufacturer on request.
" Observe the tolerable installation position together
with the operating an storage temperatures.
Installation example
for heater in a delivery van and a car
1 Heater
5 Fuse bracket
2 Exhaust pipe with exhaust silencer
6 Control unit
3 Combustion air intake silencer
7 Rising pipe
4 Fan relay
8 T-piece for fuel
15
3 Installation
Possible installation positions
The heater should preferably be installed in the normal When the heater is operating, the shown normal or
position, horizontal with the exhaust connection down maximum installation positions can be varied briefly
to the bottom. by up to +15° in all directions. Such deviations
Depending on the installation conditions, the heater caused by the inclined position of the vehicle do not
can also be mounted in the permitted swivel range, impair the heater functions in any way.
see diagram.
Normal position with permitted swivel range
" Swivel range from the normal position swivelled
" Swivel range from the normal position to max. 90°
down to max. 90°: the water connections point
swivelled around the longitudinal axis: the water
downwards.
connections are horizontal.
1 Vent screw: must always be at the top
2 Fuel connection
Mounting and fastening
Position the heater in the holding clips of the heater
bracket and fasten with fastening screw, M6 x 97
(tightening torque 6+0.5Nm). Mount the heater bracket
in a suitable position in the engine compartment,
possibly using anti-vibration pads if necessary.
Please note!
Depending on the installation space available, the
heater can be moved sideways in the bracket and
screwed in one of the two fastening threads.
1 Heater
2 Bracket clips
3 Bracket holder
4 Fastening screw
5 Fastening thread
16
3 Installation
Nameplate
The nameplate is fastened to the front of the heater.
The second nameplate (duplicate) is included in the
scope of supply of the heater.
If required, the duplicate nameplate can be adhered
in a clearly visible position on the heater or near to
the heater.
Please note!
The regulations and safety instructions to be
observed for this chapter are stated on page 5.
1 Original nameplate
2 2nd nameplate (duplicate)
17
3 Installation
Connection to the cooling water circuit
The heater is connected to the cooling water circuit
Please note!
in the water feed pipe from the vehicle engine to the
heat exchanger. There are four possible alternative
" When installing the heater, please take note of the
installations here.
direction of flow of the coolant circuit.
The alternatives are described on pages 19  21.
" Fill the heater and water hoses with coolant before
connecting to the coolant circuit.
Danger!
" Route the water hoses without any kinks, and in a
Risk of injuries and burns!
rising position if possible.
It is possible for the coolant and components of the
" When routing the water pipes, observe a sufficient
coolant circuit to get very hot.
clearance to hot vehicle parts.
" Parts conveying water must be routed and fastened
" Protect all water hoses / water pipes from chafing
in such a way that they pose no temperature risk to
and from extreme temperatures.
man, animals or material sensitive to temperature
from radiation / direct contact.
" Secure all hose connections with hose clips
(tightening torque = 1.5Nm).
" Before working on the coolant circuit, switch the
heater off and wait until all components have cooled
" After the vehicle has been operating for 2 hours or
down completely, if necessary where safety gloves.
travelled 100 km, tighten the hose clips again.
" The minimum water flow rate is only guaranteed if
the temperature difference of the heating medium
does not exceed 10 K between water inlet and water
outlet during heating.
" Only overpressure valves with an opening pressure
of min. 0.4  max. 2 bar may be used in the coolant
circuit.
" The coolant liquid must contain at least 10 %
antifreeze all year round as corrosion protection.
" The cooling liquid must contain sufficient antifreeze
for low temperatures.
" Before commissioning the heater or after changing
the cooling liquid, the whole coolant circuit including
heater must be vented free of bubbles according to
the instructions issued by the vehicle manufacturer.
" Only top up with coolant approved by the vehicle
manufacturer.
18
3 Installation
Connection to the cooling water circuit
Integrate the heater in the water feed pipe from Heating characteristics
the vehicle engine to the heat exchanger  inline
connection When the heater is switched on, the heat flows through
the vehicle heat exchanger and the vehicle engine.
Disconnect the water feed pipe from the vehicle engine Once the cooling water has reached a temperature of
to the vehicle heat exchanger. Connect up the heater approx. 30 °C, depending on the selected fan setting
with connection pieces and water hoses to the water the vehicle fan is switched on and the heat is also
feed pipe. conveyed to the passenger compartment.
1 Heater
2 Connection piece
3 Heat exchanger
4 Vehicle engine
Integrate the heater, water pump and non-return Heating characteristics
valve in the cooling water circuit
When the heater is switched on, the heat flows through
Disconnect the water feed pipe from the vehicle the vehicle heat exchanger only to the vehicle engine.
engine to the vehicle heat exchanger and insert the Once the cooling water has reached a temperature of
non-return valve. Connect up the heater to the non- approx. 30 °C, depending on the selected fan setting
return valve using the water hoses. the vehicle fan is switched on and the heat is also
conveyed to the passenger compartment.
Advantage compared to  inline connection
cooling water circuit
No loss of efficiency in the vehicle heating when the
heater is switched off.
Please note!
Non-return valve must
be ordered separately,
see additional parts
catalogue for Order
No.
1 Heater
2 Non-return valve
3 Heat exchanger
4 Vehicle engine
19
3 Installation
Connection to the cooling water circuit
Integrate the heater, water pump, non-return valve, Heating characteristics
thermostat and T-piece in the cooling water circuit.
Small coolant circuit
Disconnect the water feed pipe from the vehicle Fast heating of the passenger compartment. Initially
engine to the vehicle heat exchanger and insert the heat produced by the heater is only conveyed to
the non-return valve. the heat exchanger up to a cooling water temperature
Disconnect the water return pipe from the heat of approx. 70 °C. This heats the passenger
exchanger to the vehicle engine and insert the compartment up quickly.
T-piece. Large cooling water circuit
Connect the heater and thermostat with water hoses If the cooling water temperature continues to increase,
to the non-return vale and T-piece as shown in the the thermostat slowly changes over to the large circuit
diagram. (full change-over at approx. 75 °C). This heats the
passenger compartment up and also allows for engine
pre-heating.
1 Heater
2 Non-return valve
3 Thermostat
4 T-piece
5 Heat exchanger
6 Vehicle engine
Please note!
The thermostat, non-return valve and T-piece must be
ordered separately, see additional parts catalogue for
Order No.
Thermostat functions
Cooling water temperature < 70 °C 
small coolant circuit:
Connection no. 1  open to the heater
Connection no. 2  open to the T-piece
Connection no. 3  closed to the non-return valve
Cooling water temperature > 75 °C 
large coolant circuit:
Connection no. 1  open (to the heater)
Connection no. 2  closed (to the T-piece)
Connection no. 3  open (to the non-return valve) 1 Connection to the heater
2 Connection to the T-piece
3 Connection to the non-return valve
Please note!
Integrate the thermostat into the water circuit with
connections and as shown in the diagram.
20
3 Installation
Heating characteristics in parking heater mode
Connection to the coolant circuit
Small cooling water circuit with heat discharge in
Integrate the heater, water pump and combination
the vehicle's interior.
valve with thermostat function in the cooling water
Initially, up to a cooling water temperature of approx
circuit.
67 °C, the heat from the heater is only fed to the heat
exchanger - inside of the vehicle heats up fast.
Combination valve with 5 connections
Order no. 25 2014 80 72 00
Small cooling water circuit with heat discharge at
If the water feed pipe and water return pipe from the
the vehicle's engine.
vehicle engine to the heat exchanger are installed
From a cooling water temperature of around 67 °C,
separately, the combination valve with 5 connections
part of the heater's heat is also fed to the vehicle's
and an additional T-piece has to be used.
engine.
This slowly heats the engine circuit, without causing
Combination valve with 6 connections
the "small cooling water circuit" for heating the
Order no. 25 2014 80 62 00
vehicle's interior to rapidly cool down.
If the water feed pipe and water return pipe from the
Heating characteristics in independent heater mode
vehicle engine to the heat exchanger are installed in
parallel, the combination valve with 6 connections
Large cooling water circuit
(without T-piece) can be used.
When the vehicle's engine is running the heat is
uniformly distributed to the heat exchanger and vehic-
le engine - further shortening of the warm-up phase
and heating up of the inside of the vehicle.
Install combination valve with 5 connections Install combination valve with 6 connections
Disconnect the water feed pipe from the vehicle engine Disconnect the water feed pipe and the water return
to the vehicle heat exchanger and insert the combination pipe from the vehicle engine to the vehicle heat
valve. exchanger and insert the combination valve.
Disconnect the water return pipe from the heat exchanger Connect the heater to the combination valve with the
to the vehicle engine and insert the T-piece. water hoses, as shown in the drawing.
Connect the heater to the combination valve and T-piece
with the water hoses, as shown in the drawing.
Combination valve with thermostat (6 connections)
Heater
from
to
vehicle engine
vehicle heat exchanger
to from
vehicle engine vehicle exchanger
1 Heater
2 Combination valve
(5 connections)
3 T-piece
4 Heat exchanger
5 Vehicle engine
21
3 Installation
Exhaust system
(Exhaust diagram see page 23)
Mounting the exhaust system
Danger!
Risk of injuries and burns!
The scope of supply of the universal installation kit
Every type of combustion produces high temperatures
includes a flexible exhaust pipe, inner Ø 24 mm,
and toxic exhaust fumes. This is the reason why the
1000 mm long and an exhaust silencer.
exhaust system must be installed according to these
The flexible exhaust pipe can be shortened to 20 cm
instructions.
or lengthened to max. 2 m, depending on the
" Do not perform any work on the exhaust system
installation conditions.
while the heater is working.
Fasten the exhaust silencer to a suitable position in
" Before working on the exhaust system, first switch
the vehicle. Route the flexible exhaust pipe from the
the heater off and wait until all parts have cooled
heater to the exhaust silencer and fasten with pipe
down completely, wear safety gloves if necessary.
clips. Use a pipe clip to fix a short exhaust pipe end
" Do not inhale exhaust fumes.
(with end sleeve) to the exhaust silencer.
Please note!
" Comply with the regulations and safety instructions
for this chapter on page 4  7.
" If a silencer is fitted, the exhaust end pipe must
Caution!
be much shorter than the flexible exhaust pipe
Safety instructions!
between the heater and the exhaust silencer.
The whole exhaust system gets very hot during and
immediately after the heater has been working in the
heating mode. This is why the exhaust system must
be routed according to these installation instructions.
" The exhaust outlet must end in the open air.
" The exhaust pipe must not protrude beyond the
lateral limits of the vehicle.
" Install the exhaust pipe sloping slightly downwards.
If necessary, make a drain hole approx. Ø 5 mm at
the lowest point to drain off condensation.
" Important functional parts of the vehicle must not be
impaired (keep sufficient clearance).
" Mount the exhaust pipe with sufficient clearance to
heat-sensitive parts. Pay particular attention to fuel
pipes (plastic or metal), electrical cables and brake
hoses etc.!
" Exhaust pipes must be fastened safely
(recommended clearance of 50 cm) to avoid damage
from vibrations.
" Route the exhaust system so that the emitted fumes
are not sucked in with the combustion air.
" The mouth of the exhaust pipe must not get clogged
by dirt and snow.
" The mouth of the exhaust pipe must not point in the
direction of travel.
" Always fasten the exhaust silencer to the vehicle.
22
3 Installation
Combustion air system
Mounting the combustion air system Caution!
Safety instructions for the combustion air system
The heater is mounted in the engine compartment, as " The combustion air opening must be free at all
described in these instructions. times.
If the intake connection for combustion air is in a " Position the combustion air intake to be sure that
position where the combustion air can be expected to exhaust fumes cannot be sucked in with the
be no warmer than 25 °C and whether neither combustion air.
splashed water nor dust/dirt are expected, then no " Do not arrange the combustion air intake to
combustion air hose is required. pointing against the wind blast.
Otherwise a flexible combustion hose must be " The combustion air intake must not get clogged
mounted with an inner Ø 20 mm and up to 1.5 m long, with dirt and snow.
to ensure that the intake of combustion air comes " Install the combustion air intake system sloping
from an area which complies with the above slightly downwards. If necessary, make a drain
conditions. hole approx. Ø 5 mm at the lowest point to drain
off condensation.
Please note!
Comply with the regulations and safety instructions
for this chapter on page 4  7.
min. 20 cm
max. 1.5 m
to max. 2 m
1 Heater
2 Combustion air pipe
3 Exhaust pipe
4 Exhaust silencer
5 Exhaust pipe end with end sleeve
23
3 Installation
Fuel supply
" Fuel pipes must be protected from any mechanical
Mounting the dosing pump, routing the fuel pipes
damage.
and mounting the fuel tank
" Route the fuel pipes so that any distortion of the
The following safety instructions must be observed
vehicle, engine movements etc. cannot have any
when mounting the dosing pump, routing the fuel pipes
lasting effect on the service life.
and mounting the fuel tank.
Deviations from the instructions stated here are not
" Parts carrying fuel must be protected from
allowed.
interfering heat.
Failure to comply can result in malfunctions.
" Never route or fasten the fuel pipes to the heater or
vehicle exhaust system. When the systems cross,
always ensure there is a sufficient heat clearance.
Danger!
If necessary, install heat deflection plates.
Risk of fire, explosion, poisoning and injuries!
" Dripping or evaporating fuel must never be allowed
Caution when handling fuel.
to collect on hot parts or ignite on electric systems.
" Switch off the vehicle engine and heater before
" When connecting fuel pipes with a fuel hose, always
refuelling and before working on the fuel supply.
mount the fuel pipes in a butt joint to prevent any
bubbles from forming.
" No naked lights when handling fuel.
" Do not smoke.
" Do not inhale fuel vapours.
1 2
" Avoid any contact with the skin.
1 Correct connection
2 Incorrect connection  bubble formation
Caution!
Safety instructions for routing the fuel pipes!
Safety instructions for fuel pipes and fuel tanks
" Only use a sharp knife to cut off fuel hoses and
in buses and coaches
pipes. Interfaces must not be crushed and must be
free of burrs.
" In buses and coaches, fuel pipes and fuel tanks
must not be routed through the passenger
" The fuel pipe from the dosing pump to the heater
compartment or driver s cab.
should be routed at a continuous rise.
" Fuel tanks in buses and coaches must be
" Fuel pipes must be fastened safely to avoid any
positioned in such a way that the exits are not in
damage and / or noise production from vibrations
direct danger from a possible fire.
(recommended clearance of approx. 50 cm).
Please note!
Comply with the regulations and safety instructions
for this chapter on page 4  7.
24
3 Installation
Fuel supply for petrol heaters
Fuel feed point with T-piece from the fuel supply line
from the tank fitting to the vehicle engine
1 Fuel feed pipe from tank connection  insert Possible pipe lengths
T-piece before the fuel pump in the fuel feed pipe.
2 Fuel return pipe to the tank connection Intake side Pressure side
3 Dosing pump a = max. 2 m b = max. 4 m
4 T-piece, 8-6-8
5 Fuel pipe, 4 x 1 (di = Ø 2 mm)
6 Fuel pipe, 4 x 1.25 (di = Ø 1.5 mm)
7 Fuel hose, 3.5 x 3 (di = Ø 3.5 mm),
approx. 50 mm long
8 To the engine, mechanical fuel or injection pump.
Please note!
Item [4] is not included in the scope of supply.
Please refer to the additional parts catalogue for the
Order No.
Installation position of the T-piece
Use the installation positions shown in the diagram
when inserting a T-piece.
1 Direction of flow from the fuel tank
2 Direction of flow to the vehicle engine
25
3 Installation
Fuel supply for petrol heaters
Fuel feed point with tank connection 
ascending pipe, integrated in the tank fitting
1 Tank connection for tank fitting  Possible pipe lengths
di = Ø 2 mm, da = Ø 4 mm
2 Dosing pump Intake side Pressure side
3 Fuel hose, 4 x 1 (di = Ø 2 mm) a = max. 2 m b = max. 4 m
4 Fuel hose, 3.5 x 3 (di = Ø 3.5 mm),
approx. 50 mm long
5 Fuel pipe, 4 x 1.25 (di = Ø 1.5 mm)
Caution!
Safety instructions for the fuel supply!
" The fuel must not be conveyed by gravity or " When the pressure in the fuel pipe is more than
overpressure in the fuel tank. 4 bar or there is a non-return valve in the return pipe
(in the tank), a separate tank connection must be
" Withdrawal of fuel after the vehicle s fuel pump is used.
not allowed.
" When using a T-piece in a plastic pipe, always use
" When the pressure in the fuel pipe is more than support sleeves in the plastic. Connect the T-piece
0.2 bar to max. 4 bar, use a pressure reducer and the plastic pipe with corresponding fuel hoses
(order no. 22 1000 20 08 00) or separate tank and secure with hose clips.
connection.
26
3 Installation
Fuel supply for petrol heaters
Installation position of the dosing pump
Always mount the dosing pump with the pressure side
rising upwards. Every installation position over 15° is
allowed, although an installation position between 15°
and 35° is preferable.
1 Installation position between 0° and 15°
is not allowed
2 Preferred installation position in range 15° to 35°
3 Installation position in range 35° to 90° is
allowed
Possible suction and pressure height
of the dosing pump
Pressure height from vehicle tank to dosing pump:
a = max. 3000 mm
Intake height in pressure-less vehicle tank:
b = max. 500 mm
Intake height in vehicle tanks with withdrawal by
negative pressure (valve with 0.03 bar in tank cap):
b = max. 150 mm
Pressure height of the dosing pump to the heater:
c = max. 2000 mm
Please note!
1 Connection to heater
Check tank venting.
2 Max. fuel level
3 Min. fuel level
Caution!
Safety instructions for installing
the dosing pump
" Always mount the dosing pump with the pressure
side rising upwards  minimum incline 15°.
" Protect the dosing pump and filter from intolerable
heat, do not mount near to the silencers and
exhaust pipes.
27
3 Installation
Fuel supply for diesel heaters
Fuel feed point with T-piece from the fuel supply
line from the tank fitting to the vehicle engine.
1 Fuel return pipe from the tank connection Possible pipe lengths
2 Fuel feed pipe from tank connection  insert
T-piece before the fuel pump in the fuel feed pipe. Intake side
3 T-piece a = max. 5 m
4 Fuel hose, 3.5 x 3 (di = Ø 3.5 mm)
approx. 50 mm long
5 Fuel pipe, 4 x 1 (di = Ø 2 mm) Please note!
6 To the engine, mechanical fuel or injection pump.
Item (3) is not included in the scope of supply.
Please refer to the additional parts catalogue for the
Order No.
Installation position of the T-piece
1 2
Use the installation positions shown in the diagram
when inserting a T-piece.
1 Direction of flow from the fuel tank
2 Direction of flow to the vehicle engine
28
3 Installation
Fuel supply for diesel heaters
Fuel feed point with ascending pipe in the tank connection,
integrated in the vehicle tank or in the tank fitting
1 Tank connection for tank fitting, Possible pipe length:
di = Ø 2 mm, da = Ø 4 mm
2 Fuel hose, 3.5 x 3 (di = Ø 3.5 mm), Intake side:
approx. 50 mm long a = max. 5 m
3 Fuel pipe, 4 x 1 (di = Ø 2 mm)
Possible intake and pressure height:
Pressure height from vehicle tank to heater:
a = max. 3000 mm
Suction height for pressure-free vehicle tank:
b = max. 1000 mm
Suction height for a vehicle tank with withdrawal under
negative pressure (valve with 0.03 bar in tank cap):
b = max. 400 mm
Please note!
Check tank venting.
1 Connection to heater
2 Max. fuel level
3 Min. fuel level
29
3 Installation
Fuel supply
Fuel quality for petrol heaters
Please note!
The heater can run on commercially available fuel
" Mixtures with used oil are not allowed!
as per DIN EN 228, as used in the vehicle tank.
" After refuelling with winter or cold diesel or the listed
blends, the fuel pipes and the dosing pump must be
Fuel quality for diesel heaters
filled with the new fuel by letting the heater run for
The heater can run on commercially available diesel
15 mins.!
fuel as per DIN EN 590 as used in the vehicle tank.
Fuel for special cases
Operation with biodiesel (PME)
In special cases (above 0 °C), the heater can also run
The heater is not certified for operation with biodiesel.
on fuel oil EL or paraffin.
Fuel for low temperatures
Refineries and fuel service stations automatically
adjust the fuel to normal winter temperatures (winter
diesel). This means that difficulties are only to be
expected for extreme drops in temperature, as also
apply to the vehicle engine. Please also refer to the
vehicle manual.
If the heater is run from a separate tank, please
comply with the following rules:
For temperatures above 0 °C, any kind of diesel fuel
as per DIN EN 590 can be used.
If no special diesel fuel is available for low
temperatures, then paraffin or petrol should be mixed
with the fuel according to the following table:
Temperature Winterdiesel Addition
0 °C to  25 °C 100 % 
 25 °C to  40 °C 50 %* 50 % paraffin
or petrol
* or 100 % special cold diesel fuel (Arctic diesel)
30
4 Operation and function
Operating instructions Initial commissioning
The heater is operated by a control element.
The following points are to be checked by the
Detailed operating instructions are enclosed with the
company installing the heater during initial
control unit.
commissioning.
Please note!
" After installation of the heater, the coolant circuit
and the whole fuel supply system must be vented
The workshop / garage installing the heater will issue
carefully. Comply with the instructions issued by the
you with the operating instructions.
vehicle manufacturer.
Important instructions for operation
" Open the coolant circuit before the trial run (se the
Safety checks before the start
temperature control to  WARM ).
After a lengthy period of non-use (summer months)
check that all parts fit securely (tighten screws where
" During the trial run of the heater, check all water and
necessary).
fuel connections for leaks and firm fitting.
Check the fuel system visually for any leaks.
" If the heater shows a fault during operation, find
Before switching on
and eliminate the cause of the fault using a
Before switching on or pre-programming the heater,
diagnosis unit.
adjust the heating control in the vehicle to  WARM
(maximum setting) and the fan to  SLOW (low power
consumption). Description of functions
In vehicles with automatic heating, adjust the heating
control to  MAX and open the heating vents before
Switching on (pre-heating mode)
switching the ignition off.
When switched on, the operating display in the control
unit lights up. The water pump starts up.
Pre-venting with change-over  heating / venting
After a specific program sequence the combustion air
Pre-venting means the possibility of starting the
fan, glow plug and metering pump start up and initiate
vehicle fan directly from the heater preselection timer
combustion. Once a stable flame has formed, the glow
or, even more convenient, from the radio remote
plug switches off under time control.
control EasyStart R / R+, thus bypassing the heating
mode, so that the passenger compartment, which
Heating mode
frequently heats up considerably in summer weather,
Depending on heating requirements, the heater is
can be ventilated briefly with fresh air (separate
adjusted in the following stages:
wiring).
LARGE  SMALL  OFF (pause).
Heating at high altitudes
The temperature limits are permanently programmed in
When using the heater at high altitudes, please note:
the electronic controller.
If the heating requirements in the  SMALL stage are
" Heating at altitudes up to 1500 m:
so small that the cooling water temperature reaches
 Unlimited heating possible.
85°C, the heater goes into the pause mode.
" Heating at altitudes over 1500 mm:
The heater continues to run on for approx. 120
 Heating is possible for short periods at this
seconds, then it switches off (pause mode).
altitude (e.g. driving over a mountain pass or
The control lamp lights up and the water pump
taking a break in a journey).
continues to run, even in the pause mode.
 In the event of a lengthy stay, e.g. winter
camping, it is necessary to adjust the fuel supply
to the altitude, please contact a JE partner for
Please note!
further information.
To compensate for the low heating requirements
coming from the vehicle engine, the heater can be
Please note!
operated as pre-heater or combined pre-heater and
extra heater, depending on the settings (wiring see
In diesel heaters, 12 volt, it is possible to install an
circuit diagram).
altitude pump kit (Order No.: 24 0244 00 00 00),
which allows the heater to be run at altitudes over
1500 m and up to 2750 m, even during a lengthy stay.
31
4 Operation and function
Control and safety devices
" If the heater does not ignite within 90 seconds
Please note!
after starting the fuel pump, the start is repeated.
If the heater still does not ignite after another
Do not switch the heater off and on again more than
90 seconds, the heater is switched off. After an
twice.
unacceptable number of failed start attempts, the
controller is locked.*
" If the flame goes off by itself during operation, the
Emergency shutdown  EMERGENCY OFF
heater is restarted.
If an emergency shutdown  EMERGENCY OFF 
If the heater does not ignite within 90 seconds
is necessary during operation, proceed as follows:
after the fuel pump has started again, or it ignites
" Switch the heater off with the control or
but goes off again within 15 minutes, the heater is
" pull the fuse out or
switched off.
" disconnect the heater from the battery.
This status can be remedied by briefly switching
off and on again.
" In the case of overheating (e.g. lack of water,
poorly vented coolant circuit), the overheating
sensortriggers, the fuel supply is interrupted and
the heater switched off.
Once the cause of overheating has been
eliminated, the heater can be re-started by
switching off and on again (on condition that the
heater has cooled down again sufficiently, cooling
water temperature < 70 °C).
After the heater has been switched off for
overheating an unacceptable number of times,
the controller is locked.*
" The heater is switched off if the upper or lower
voltage limit is reached.
" The heater does not start up when the glow plug is
defect or when the electric lead to the dosing pump
is interrupted.
" The speed of the fan motor is monitored
continuously.
If the fan motor does not start up, if it is blocked
or if the speed falls below 40 % of the nominal
speed, the heater is switched off after 60 sec.
* The controller can be enabled again and the faults
read off:
" using the module timer / EasyStart T
" using the radio remote control TP5 / EasyStart R+
For other controls:
" by connecting up a diagnosis unit
" using the customer service
program KD 2000 / EDiTH
For operation and fault list, please refer to the
enclosed operating instructions or the
troubleshooting and repair instructions for the
heater.
32
5 Electrical system
Heater wiring Parts list for heater circuit diagram
1.1 Burner engine
Caution!
1.2 Glow plug
Safety instructions for wiring the heater!
1.5 Overheating sensor
The heater is to be connected up electrically
1.12 Flame sensor
according to the EMC directives.
1.13 Temperature sensor
EMC can be affected if the heater is not connected up
correctly. For this reason, comply with the following
2.1 Controller
instructions:
2.2 Fuel dosing pump
2.5.7 Relay, vehicle fan
" Ensure that the insulation of electrical cables is not
2.7 Main fuse 20 A
damaged. Avoid: chafing, kinking, jamming or
2.7.1 Fuse, actuation 5 A
exposure to heat.
2.7.5 Fuse, vehicle fan 25 A
2.12 Water pump
" In waterproof connectors, seal any connector
chambers not in use with filler plugs to ensure they
5.1 Battery
are dirt-proof and water-proof.
5.1.2 Fuse block in the vehicle
5.9.1 Switch, vehicle fan
" Electrical connections and ground connections must
5.10 Vehicle fan
be free of corrosion and firmly connected.
a) Connect to D+ for extra heating option
" Lubricate connections and ground connections
f) Disconnect line
outside the heater interior with contact grease.
g) For petrol only
h) For diesel only
k) Switch (extra heating, e.g. outside tempera-
ture < 5 °C or summer/winter change-over)
Please note!
l) JE diagnosis (Note: if the diagnosis cable is not
Comply with the following when wiring the heater and the
connected, tie it back and isolate it.)
control element:
" Electrical leads, switchgear and controllers must be
arranged in the vehicle so that they can function
Connectors and bush housings are shown from
perfectly under normal operating conditions
the cable inlet side.
(e.g.heat exposure, moisture etc.).
" The following cable cross sections are to be used
Cable colours
between the battery and heater. This ensures that
the max. tolerable voltage loss in the cables does
rt = red
not exceed 0.5 V for 12 V or 1 V for 24 V rated
bl = blue
voltage.
ws = white
Cable cross sections for a cable length of:
sw = black
 up to 5 m (plus cable + minus cable) =
gn = green
cable cross section 4 mm²
gr = grey
 from 5 to 8 m (plus cable + minus cable) =
ge = yellow
cable cross section 6 mm²
vi = violet
br = brown
" If the plus cable is to be connected to the fuse box
li = purple
(e.g. terminal 30), the vehicle cable from the battery
to the fuse box must be included in rating the overall
cable length and possibly re-dimensioned if
necessary.
Please note!
" Insulate unused cable ends.
See page 34 for circuit diagram.
33
5 Electrical system
Heater circuit diagram
25 2218 00 96 01
Parts list, page 33
34
5 Electrical system
Parts list for control units circuit diagrams
Parts list for control units circuit diagram Parts list for control units circuit diagrams
 part 1 and part 2 EasyStart
2.15.9 Temperature sensor (outside temperature) 2.15.1 Temperature sensor (room temperature)
(included in the EasyStart R+ scope of supply,
3.1.9 Change-over switch  heating / venting optional for EasyStart T)
3.1.16 Button, radio remote control 2.15.9 External temperature sensor (optional)
3.2.9 Timer, module timer 3.1.7  ON / OFF pushbutton (option)
3.2.12 Timer, mini 12 / 24 volt 3.1.9  Heat / ventilate switch (option)
3.2.14 Timer, mini lighting blue  12 volt only 3.1.11  Round control unit
3.1.16 Radio remote control button
3.3.6 Radio remote control (receiver) TP41i
3.2.15 EasyStart T timer
b) Connect to terminal +15 when heating mode
required > 2 h (with ignition switched on).
3.3.9 EasyStart R radio remote control (stationary
c) Lighting terminal 58
unit)
d) Pre-heating with vehicle fan (option)
3.3.10 EasyStart R+ radio remote control (stationary
e) External pushbutton  ON / OFF (option)
unit)
i) Connection radio module receiver TP 4i
3.6.1 Lead harness
3.8.3 Antenna
Parts list for circuit diagram control units
 part 3.1 and 3.2
c) Terminal 58 (lighting)
d) Parking ventilation with vehicle blower
(optional)
2.15.1 Temperature sensor (room temperature)
e) EasyStart T timer connection
2.15.9 Temperature sensor (outside temperature)
g) External  ON / OFF button (optional)
3.1.16 Button, radio remote control
3.1.18 Button, CALLTRONIC
Connectors and bush housings are shown from the
cable inlet side.
3.2.12 Timer, mini 12 / 24 volt
3.2.14 Timer, mini lighting blue  12 volt only
Cable colours
3.3.7 Radio remote control TP5
3.3.8 Remote control, CALLTRONIC
rt = red
bl = blue
3.8.3 Antenna
ws = white
sw = black
3.9.1 Diagnosis unit JE diagnosis
gn = green
gr = grey
z) Terminal 58 (lighting)
ge = yellow
vi = violet
br = brown
li = purple
Please note!
See page 36 - 41 for circuit diagrams.
35
5 Electrical system
Circuit diagram control elements  part 1
Parts list, page 33, 34 25 1920 00 97 01 C
36
5 Electrical system
Circuit diagram control elements  part 2
25 1920 00 97 01 C
Circuit diagram control elements  part 3.1
25 1920 00 97 02 B
37
5 Electrical system
Circuit diagram control elements  part 3.2
25 1920 00 97 02 B
38
5 Electrical system
Circuit diagram control elements  EasyStart T
25 2217 00 97 03 A
39
5 Electrical system
Circuit diagram control elements  EasyStart R
25 2217 00 97 02 B
40
5 Electrical system
Circuit diagram control elements  EasyStart R+
25 2217 00 97 01 C
41
6 Troubleshooting / Maintenance / Service
In case of faults, please check the following Maintenance instructions
points
" Switch the heater off once a month for about
10 minutes, even outside the heating period.
" If the heater does not start after being switched on:
" Before the heating period starts, the heater should
 Switch the heater off and on again.
undergo a trial run.
" If the heater still does not start, check whether:
If persistent extreme smoke develops, unusual
 There is fuel in the tank?
burning noises or a clear fuel smell can be perceived
 The fuses are OK?
or if electric/electronic parts heat up, the heater
 The electrical cables, connections etc. are OK?
must be switched off and put out of service by
 Anything is clogging the combustion air supply
removing the fuse.
or exhaust system?
In this case, the heater should not be started up
again until it has been checked by qualified staff
who have been trained on Eberspächer heaters.
" Check the openings of the combustion air supply
Troubleshooting
and exhaust system after longer standstill periods,
If the heater remains faulty even after these points
clean if necessary!
have been checked, or another malfunction occurs
in your heater, please contact:
" For installation ex works, your contract workshop.
Service
" For subsequent installation, the workshop who
installed your heater.
If you have any technical queries or problems
with your pre-heater, dial the following service
phone number:
Please note!
Please note that warranty claims can be become void
Hotline
if the heater is changed by a third party or by this
Phone [phone]
installation of third party parts.
Fax hotline
Fax [phone] / 26 26 24
Outside of Germany, please contact the respective
national Eberspächer service agent.
42
7 Environment
Certification EU Declaration of Conformity
The high quality of Eberspächer s products is the key With regard to the following products
to our success.
To guarantee this quality, we have organised all work Heater type HYDRONIC
processes in the company along the lines of quality
management (QM). we herewith confirm that it conforms with the prime
Even so, we still pursue a large number of activities safety requirements stipulated in the directives of the
for continuous improvement of product quality in order EU Council for harmonisation of the legal regulations
to keep pace with the similarly constantly growing of the member states with regard to electromagnetic
requirements made by our customers. compatibility (89 / 336 / EEC).
All the steps necessary for quality assurance are This declaration applies to all heaters produced
stipulated in international standards. according to the production drawings HYDRONIC
This quality is to be considered in a total sense. which are an integral part of this declaration.
It affects products, procedures and customer/supplier The following standards / directives have been used
relationships. to assess the product with regard to electromagnetic
Officially approved public experts assess the system compatibility:
and the corresponding certification company awards " EN 50081  1 Basic form interference emission.
a certificate. " EN 50082  1 Basic form interference resistance.
" 72 / 245 / EEC  Modification status 95 / 54 / EU
Eberspächer has already qualified for the following interference suppression in motor vehicles.
standards:
Quality management as per
DIN EN ISO 9001:2000 and ISO/TS 16949:1999
Environment management system as per
DIN EN ISO 14001:1996
Disposal
Disposal of materials
Old devices, defect components and packaging
material can all be separated and sorted into pure-
grade factions so that all parts can be disposed of as
required in an environment-friendly manner or recycled
where applicable.
Electric motors, controllers and sensors (e.g.
temperature sensors) are deemed to be  electronic
scrap .
Dismantling the heater
The heater is dismantled according to the repair
stages in the current troubleshooting / repair
instructions.
Packaging
The packaging of the heater can be kept in case
it has to be sent back.
43
8 Lists
List of key words A  Z
Keyword Page Keyword Page
A H
Accident prevention ................................................... 7 Heating operation ..................................................... 31
Altitude ..................................................................... 31 Heat flow ........................................................... 12, 13
Ambient temperature ......................................... 12, 13 Hotline ...................................................................... 42
Arrangement of the heater ......................................... 5
I
B Information ................................................................. 4
Bubble formation ...................................................... 24 Installation location .................................................. 15
Installation positions ................................................ 16
C
Instructions ........................................................... 4, 5
Cable colours .................................................... 33, 35
Installation ......................................................... 15, 16
Certification .............................................................. 43
Introduction ................................................................ 2
Circuit diagrams ................................................ 34  41
Initial commissioning ................................................ 31
Cooling water circuit ......................................... 19  21
Interference suppression class ......................... 12, 13
Combination valve .................................................... 21
Combustion air system ............................................. 23 L
Contents ..................................................................... 2 List of abbreviations ................................................. 45
Concept of this manual .............................................. 3 Lead harnesses ................................................... 8, 10
Control in heating mode ............................................ 31
M
Controls .................................................................... 32
Main dimensions ....................................................... 14
Connection to the coolant circuit ..................... 19  21
Materials ................................................................... 43
D Maintenance ............................................................. 42
Description of functions ........................................... 31
N
Declaration of conformity ......................................... 43
Nameplate ................................................................ 17
Disposal .................................................................... 43
Dosing pump ...................................................... 24, 27
O
E
Operation .................................................................. 31
Emergency shut-down .............................................. 32
Operating instructions .............................................. 31
Emergency off .......................................................... 32
P
Environment .............................................................. 43
Picture symbols .......................................................... 4
EU Declaration of Conformity .................................... 43
Pipe lengths ........................................... 25, 26, 28, 29
Exhaust .................................................................... 22
Power consumption ............................................ 12, 13
Exhaust system ............................................. 5, 22, 23
Presentations ............................................................. 4
F
Pressure side .................................................... 25, 26
Fastening .................................................................. 16
Proper use .................................................................. 4
Faults ....................................................................... 42
Purpose ...................................................................... 4
Forced shut-down ..................................................... 32
Fuel .................................................................. 24  30 R
Fuel withdrawal ................................................. 24  29 Rated voltage .................................................... 12, 13
Fuel system ...................................................... 24  30 Regulations ............................................................ 5, 6
Fuel quality ............................................................. 30
S
Fuel supply .................................................. 5, 24  30
Safeguards ............................................................... 32
Scope of supply ................................................. 8  11
Special text structure ................................................. 4
Statutory regulations ............................................. 5, 6
Starting procedure .................................................... 31
Suction height ........................................................... 27
Switching on ............................................................. 31
44
8 Lists
List of key words A  Z List of abbreviations
Keyword Page ADR
European agreement about the international transport
T
of dangerous goods on the road.
Test symbol ................................................................ 5
Text structure ............................................................. 4
EC type approval
Technical data ................................................... 12, 13
Permit awarded by the Federal Vehicle Office for the
Troubleshooting ........................................................ 42
production of a heater for installation in motorised
T-piece ............................................................... 25, 28
vehicles.
V
Voltage .............................................................. 12, 13
EMC directive
Voltage limit ....................................................... 12, 13
Electromagnetic compatibility.
W
Wiring ....................................................................... 33 JE partner
Weight ............................................................... 12, 13 J. Eberspächer partner.
PME
Biodiesel as per DIN V 51606.
45