Ecotherm EHRE Manual

www.ecotherm.com
HEAT TRANSFER SOLUTIONS
®
ECOTHERM
Operating and
Maintenance Instructions
www.ecotherm.com
Model EDRE
steam/water
Model EHRE/EHPE
heating water
Models EHRE/EHPE & EDRE
Microprocessor Control: ELC 11_V.1.0
High Capacity
Water Heaters

2
ECOTHERM
Heat transfer solutions
®
Operating Instructions High Capacity Water Heaters Models EHRE/EHPE & EDRE - ELC 11
1. Introduction 4
1.1 Preparing for installation 4
1.1.1 Unpacking storage tanks 4
1.1.2 Non-return valves for cold water supply and circulation connections 4
1.1.3 Filter recommendations 4
1.1.4 Primary circuit heating water pressure from boiler 4
1.1.5 Secondary circuit expansion vessel 4
1.1.6 Tank legs 4
1.1.7 Electronic control unit - maximum operation temperature 4
1.1.8 Low power electrical supply to control unit and electric anodes 4
1.1.9 Copper piping and water borne chloride ions 4
1.1.9a Isolating connectors 4
1.1.9b Non-sacricial electric anode 4
1.1.9c Simple repair 4
2. Warranty, safety instructions and general information 5
2.1 General 5
2.2 Guarantee 5
2.2.1 Warranty 5
2.2.2 Additional warranty conditions for the stainless steel storage tank 5
2.2.3 Liability 5
2.2.4 Validity clause 5
2.2.5 Choice of law 5
2.3 Safety guidelines 6
2.4 Product description & delivery content 7-9
2.5 Packaging 10
2.6 Compliance statement 10
3. Installation and assembly 11
3.1 Space requirement 11
3.1a Requirement of more space for additional tanks 11
3.2 Installation 12
3.3 Heat exchanger assembly 12
3.4 Cover assembly 12
3.5 Connection dimensions and heights 13
4. Connection piping 14
4.1 General remarks 14
4.2 Cold water connection 14
4.3 Hot water connection 14
4.4 Circulation pipeline 14
4.5 Ventilation 14
4.6 Drainage 14
4.7 Primary circuit connection to boiler 14
4.8 Re-tightening of the ange bolts 14
4.9 Heat exchanger, pumps and valves for EH water heater 15
4.10 Primary control valve and primary side connection dimensions 15
5. Electrical connection 16
5.1 General remarks, safety guidelines, warnings 16
5.2 Electrical loading 17
5.3 Electrical connection diagram 17-23
6. Filling and venting of the water heater 24
6.1 Flushing of the plant 24
6.2 Filling the storage tank and secondary circuit 24
6.3 Filling and venting the primary circuit 24
7. Control Unit description and operation control unit ELC 11 25
7.1 General buttons 25
7.2 Display and keypad 26
7.3 Description of the display units 27
7.3.1.1. Service page 27
7.3.1.2. Time out safety level 27
Contents
Contents

3
ECOTHERM
Heat transfer solutions
®
Operating Instructions High Capacity Water Heaters Models EHRE/EHPE & EDRE - ELC 11
7.3.1.3. Adjusting of date & time 27
7.3.1.4. Adjusting of language 28
7.3.1.5. Screensavertime 28
7.3.1.6. Reset to factory setting 28
7.3.1.7. Touch calibration 28
7.3.1.8. Monitor cleaning 28
7.3.1.9. Network setting 29
7.3.1.10. Data administration 29
7.3.2.1. Parameter input 29
7.3.2.2. Usual or high operation 29
7.3.2.3. Set value hot water 30
7.3.2.4. Shall heating ON 30
7.3.2.5. Serviceparameter 30
7.3.2.5.1. Shall loading OFF 30
7.3.2.5.2. Shall loading ON 30
7.3.2.5.3. Max. boiler temperature 30
7.3.2.5.4. Heat build-up time 31
7.3.2.5.5. Legionella temperature 31
7.3.2.5.6. Legionella parameter 31
7.3.2.5.7. Enter limit WW shall value 31
7.3.2.5.8. Mode of rinsing 32
7.3.2.5.9. Shall value rinsing ON / OFF 32
7.3.2.5.10. Time single ushing 32
7.3.2.5.11. Time lushing in intervalls 33
7.3.2.5.12. Setting of control unit 33
7.3.2.5.13. Slide operation 34
7.3.2.5.14. Boiler return limitation 34
7.3.2.5.15. Sensor equalisation 34
7.3.3. Occurences, Journal 35
7.3.4. Trend display 35
7.3.5. Pollutuion control 36
7.3.6. Alarms 36-37
8. Operating modes 38
8.1 General 38
8.2 Description of the display units 39
8.2.1 Peak load operation mode 39
8.2.2 Manual operation 39
8.2.3 Service parameters page 3 39
8.2.4 Sensor adjustment 39
9. Operating modes 40
9.1 Normal loading operation mode 40
9.2 Loading process at normal operation with remote control 40
9.3 Peak load operation mode 40
9.4 Remote controlled legionella circuit 41
9.5 Defouling cycle 41
9.6 Delta-T operating mode 41
9.7 Emergency operation 41
9.8 Limiting boiler return temperature 41
10.Externalcoldwaterushing(optional) 42-45
11. Start-up 45
11.1 Checks 45
11.2 Start-up 45
12. Cleaning and servicing 46
12.1 Cleaning and servicing of tank vessel 46
12.2 Cleaning and servicing the tube heat exchanger 46
13. Identifying faults 47
13. Summary of parameter settings 47
Introduction

4
ECOTHERM
Heat transfer solutions
®
Operating Instructions High Capacity Water Heaters Models EHRE/EHPE & EDRE - ELC 11
Introduction
1. Introduction
Congratulations!
With the purchase of your high
capacity water heater from
ECOTHERM you have opted for a
device incorporating the ultimate in
hygiene, economy, reliability and
functionality. We are convinced that
youruserswillenjoy thebenets of
your high capacity water heater for a
long time.
This manual contains vital information
on starting-up and service of your
ECOTHERM high capacity water
heater.
Please read this information carefully
before starting up and familiarise
yourself with the operating processes
required.
Compliance with all instructions is
the basis of smooth and trouble-
free operation of the ECOTHERM
high capacity water heater and
safeguards your rights in the event
of warranty claims.
1.1 Preparing for installation
1.1.1 Unpacking storage tanks
Extreme care is required when un-
packing the pre-assembled compo-
nents from the casing. Some items
aretopheavy,andcertainparts(e.g.
microprocessorhousing)cannotbear
theweightofthepre-assemblywhen
laidsidewaysontheoor. When re-
moving storage tanks from a container,
care must be taken while clearing the
doorway not to damage or knock off
the air vent protruding from the top of
the tank.
1.1.2 Non-return valves for cold
water supply and circulation con-
nections
Non-return valves must be provided
for the secondary domestic cold water
supply and circulation connections, in
order to avoid possible convectional or
expansivebackowofheatedwater.
1.1.3 Filter recommendations
To avoid damage to pumps and fouling
of heat exchangers by intake of foreign
bodies, ECOTHERM recommends
that strainers be placed in front of sup-
ply connections as follows:
Primary circuit heating water supply:
Strainer mesh size 150 - 200 µm.
Secondary circuit cold water supply:
Strainermeshsize50-60µm
1.1.4 Primary circuit heating water
pressure from boiler
The heating water supply to the heat
exchanger has minimum pressure re-
quirement of 1.5 bar, and a maximum
of 10 bar. Failure to observe this re-
quirement may potentially expose the
primary circuit to negative pressure
aeration. ECOTHERM recommends
that a closed expansion vessel with
pressurisedll-upbettedtothepri-
mary circuit.
1.1.5 Secondary circuit expansion
vessel
An expansion vessel connected to
the domestic hot water supply line is
required to allow for the increase of
water volume during heating. Failure
to observe this requirement may result
in regular small losses of heated do-
mestic water through the ECOTHERM
product‘s own pressure safety valve
during heating.
1.1.6 Tank legs
Tank legs MUST NOT be screwed or
xed to the oor under any circum-
stances, otherwise expansion strain
will cause cracks, which may lead to
leakage. The tank must be placed on
theoor,supportedbyitslegs,which
must be able to move slightly as the
tankexpandsorcontracts.(Thescrew
holes in the base of the legs are for
transportationpurposesonly.)
1.1.7 Electronic control unit - maxi-
mum operating temperature
Damage to electronic components
may occur if the surrounding air
temperature in the immediate vicinity
rises above 40°C. The ambient air
temperature must be low enough to
enablesufcient heat radiationcool-
ing of the high temperature electronic
components.
1.1.8 Low power electrical supply
to control unit and electric anodes
Sufcient standard household plug
sockets are to be provided within the
area of the front covers of the ECO-
THERM control unit. Rating 230V
±5%, single phase, 2.5 kVA total
power for both sockets.
1.1.9 Copper piping and water borne
chloride ions
The following applies to installations
with copper piping and water borne
chlorideions(>100mg/litre):
1.1.9a Isolating connectors
All connections must be electrically
isolated from the copper piping using
the special isolating ange kits and
isolating screw connectors provided.
1.1.9bNon-sacricialelectricanode
Thenon-sacricialelectricanodesup-
plied must be connected to the mains
power supply and be operational at
all times, in order to inhibit galvanic
transport of material away from stain-
less steel surfaces.
1.1.9c Simple repair
Please note that in the unlikely event
of pitting occurring, affected stainless
steel areas can be quickly and cheaply
repaired to 100 % serviceability on site
by your local ECOTHERM Support
Centre using specialised techniques
developed by ECOTHERM. Stainless
steel therefore offers the best possible
choice for better hygiene, durability
and longer life.

5
ECOTHERM
Heat transfer solutions
®
Operating Instructions High Capacity Water Heaters Models EHRE/EHPE & EDRE - ELC 11
Safety Instructions and General Information
2.1 General
These installation and operating instructions are part of the ECOTHERM
high capacity water heater and shall be handed to user and read carefully to
ensure that the safety aspects are observed at all times.
Intheeventofsaleandre-saleoftheEHECOTHERM high capacity water
heater to third parties the installation and operating instructions shall be
supplied to the purchaser.
We would therefore ask you to keep these instructions safely near the
appliance.
ECOTHERM cannot accept any
liability arising from improper use,
installation or non-compliance
with installation and operating
instructions.
2. Warranty, Safety Instructions and General Information
2.2 Guarantee
2.2.1 Warranty
ECOTHERM stainless steel products are
supplied with a manufacturer’s warranty against
leakage subject to the General Terms and
Condition of Trade. Warranty claims require
compliance with the items listed in chapter 1.1
on page 4, as well as the following:
Goods should be checked for completeness on
delivery and for external or hidden defects on
delivery. In the event of any doubt ECOTHERM
should be notied immediately.
The warranty period is:
5 years on stainless steel goods manufactured
by us.
1 year on everything else (e.g. additional
goods purchased, accessories)
The warranty covers the free replacement of
parts, where it can be proved that the defect
is due to material, production or construction
faults. The warranty does NOT cover:
• Dismantling and re-assembly costs
• Consequential damages or profit loss
which may arise from a defect.
Warranty claims have no delaying
effect on the payment dates and other
demands.
The warranty is no longer valid:
• if the warranty conditions mentioned in § 8
and § 9 of our standard business conditions
are not met
• if damages are caused by misuse or
operating errors.
• If there is evidence of abuse and
improper operation
• If there are violations of the official or
legal regulations
The ECOTHERM high capacity water heater is
exclusively designed for use in closed-circuit
installations.
Any other use shall be deemed as not
conforming with the intended purpose
and shall be excluded from any warranty
claims. Prior to installation and start-up of
the ECOTHERM high capacity heater the
technical specication should be checked to
ensure safe and proper use.
In the event of the ECOTHERM high
capacity water heater being damaged or
functioning unsatisfactorily, please refrain
from attempting repairs yourself and instead
notify your service agent. Repairs may only
be carried out by an ECOTHERM service
engineer using only original ECOTHERM
spare parts. Non-compliance with these
stipulations may affect function and
operational safety of the ECOTHERM high
capacity water heater and will invalidate any
warranty claims.
Installation should be carried out in
accordance with all applicable regulations
and guidelines an also in accordance
with manufacturer‘s specications by an
authorised and qualied installer.
Faulty and improper installation may cause
damage to persons, animals and materials
for which ECOTHERM cannot accept any
liability whatsoever.
For hygienically faultless and safe operation
we recommend regular servicing. Contact
your nearest ECOTHERM Support Centre
for further information. (See Internet www.
ecotherm.com for current address list)
The details and data published in this
technical document reect the current state
of developments. ECOTHERM reserves at
the right to modications serving technical
progress at any time, without any obligation
whatsoever.
2.2.2 Additional warranty conditions
for the stainless steel storage tank
The warranty period of 5 years for the
stainless steel storage tank is valid under the
following additional conditions:
1. The assembly of a fine filter in the cold
water inlet
2. Only stainless steel dummy plugs and
immersion sleeves are used
3. Water of drinking water quality and with
a chlorine content of less than 70 mg
CI/L should be used. If the chlorine
content is higher there must be
sufficient externally powered anodes in
continuous operation.
4. Connecting piping of copper or steel are
to be separated electrically (electronic
separation joint or and electronic
separation sleeves with flange connections)
5. The tank legs are left free standing and
not screwed to the floor
2.2.3. Liability
As regards direct or indirect damages
which arise due to inadequate delivery and
performance, we will only be liable in as
far as a defect can be proved to have
been caused. We assume no liability for
consequential damages or loss of profit.
2.2.4 Validity clause
If individual clauses were to invalidate this
condition, this does not affect the validity of
the remaining conditions.
2.2.5. Choice of law
Austrian law is valid. Place of performance
and jurisdiction is Linz, Austria.

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ECOTHERM
Heat transfer solutions
®
Operating Instructions High Capacity Water Heaters Models EHRE/EHPE & EDRE - ELC 11
Safety Instructions and General Information
2.3 Safety guidelines
Installation and connection should only
be carried out by approved contractors in
accordance with applicable regulations
andtechnicalspecications.
Approved safety devices shall be
installed In the cold water supply.
The operating pressure stated on the
rating plate must not be exceeded.
With higher line pressure, a pressure
reducer should be tted, whose
function can be controlled by a
downstream test valve.
Thesafetyvalveshallbettedinthe
cold water pipe and be non-closing
from the tank. Fitting of dirt traps or
other restrictions in the supply line is
not permitted. The safety valve shall
be installed to react at the permissible
operating pressure at the latest.
The top of the heat exchanger is
provided with a 3/4“ socket for opt-
ional tting of a customer supplied
pressure relief valve.
The cross section of safety valve
piping(max.2elbows,max.length2
m)shallbeatleastthatofthesafety
valve. The outlet of the safety valve
shouldowinto an tundishtoenable
observation, and the drainage piping
should be arranged to ensure that any
blow-offofsteamorhotwatercannot
cause danger to persons present.
The drainage piping after the tundish
must be of at least twice the cross
section of the valve inlet. Safety valve
and and drainage pipes shall be
designed frost-proof and may not be
routed to atmosphere. In the vicinity
of the safety valve a warning sign
shall be provided bearing the following
inscription.
Electrical connection must only be
carriedbyqualiedspecialistpersonnel
of an accredited electrical contractor.
For electrical connection, the TAB,
VDE, ÖVE and TAEV regulations with
the appropriate design specications
shall be complied with.
For cleaning and service of the system
the electric power supply must be
disconnected.
Priortoinitialstart-uptheentirewater
heater must be carefully ushed and
checked for proper installation. Initial
start-upmayonlybeperformedbyan
ECOTHERM service engineer.
For safety reasons, it is normal
for small quantities of water to
escape from the safety valve
during inital heating. Do not
block the safety valve.

P1
P2
5
19
7
ECOTHERM
Heat transfer solutions
®
Operating Instructions High Capacity Water Heaters Models EHRE/EHPE & EDRE - ELC 11
2.4 Product description and
delivery content
The ECOTHERM high capacity water
heater is designed for water heating in
largehousingestates,hospitals,hotels,
sanatoriums, etc. All water carrying
components (tank, heat exchanger
and piping) are manufactured from
titanium stabilised chrome nickel
steel(1.4571)andsuitableforpotable
water. The tank conforms to Federal
Health Ministry recommendations
and DVGW guidelines to avoid the
riskofLegionellainfection(Technical
Specication,WorkSheet
W 551). The tank is charged via
an external tubular heat exchanger.
Hot water owing through the heat
exchanger tubes is separated from
the primary heating circuit by the
tubes located inside the shell of the
heat exchanger.
Free oating rods in the heat
exchanger tubes create a 0.5 to 1.5
mm thick water lm along the tube
walls, ensuring high speed turbulent
ow and optimum heat transfer. The
constantly oscillating rod prevents
lime scale deposits during charging
andensuretheself-cleaningeffect.
A microprocessor controller controls
the charging operation and via a
control valve maintains constant hot
water temperature during charging.
A heating pump or a minimum
admission pressure of 0.6 bar is to be
provided by the customer.
The controller constantly provides
information on the system‘s
operational status by continuously
monitoring operation and performance
oftheindividualcomponents(charging
condition, condition of heat exchanger
andfaultalarm).Theregulationisable
to communicate with external systems
via houseown networks or via internet
(recording, remote request, remote
inuence).
Fig. 1: High capacity water heater model EH
 usingheating-watertypeboilers.
Legend see page 8
Safety Instructions and General Information
Ps
6
T2
1
M
9
11
12
13
14
15
9CW
16
Drain
17
T1
HE feed
Heating off
Heating on
T4
T3
T5
3519
Pp
8
4
7
6
9
9
11
HW feed HW return
HE return.
SV
P1
P2
9
Air vent
17
17
9
9
14
10
9
Z
HW
Circulation
Scope of delivery
Ring heating line - return
Ring heating line - feed
2
18

8
ECOTHERM
Heat transfer solutions
®
Operating Instructions High Capacity Water Heaters Models EHRE/EHPE & EDRE - ELC 11
Safety Instructions and General Information
Fig 2: High capacity water heater model EH (2-tank conguration)
Legend - Fig. 1, Fig. 2a and Fig. 2b:
Warm water ... Hot water connection
Cold water ... Cold water connection
Z ... Circulation
See sections 3.5 and 4.10 for connection sizes
1* ...... Hot water tank
2* ...... Flange 190 mm I.D.
3* ...... Heat exchanger
4* ...... Primary pump (not included on Economizer ED)
5* ...... Secondary hot water pump
6*...... Shut-offvalves
7* ...... Modulating control valve
8* ...... Microprocessor control unit
9...... Shut-offvalves
10 ...... Circulation pump
11...... Finelter
12 ...... Test valve
13 ...... Pressure reducer
14...... Non-returnvalve
15 ...... Pressure gauge connection
16 ...... Safety valve
17* ...... Galvanic isolating union
18*...... Non-returnvalve
19* ...... Differential pressure sensor
20*...... Dirtlter(for steam)
21* ...... Condensate drain and steam blocker
(for steam)
22*...... Motorisedcontrolvalue(for steam)
T1* ...... Temperature sensor Charge „ON“
T2* ...... Temperature sensor Charge „OFF“
T3* ...... Temp. sensor, hot water charging temperature
T4* ...... Temp. sensor, primary circuit delivery
T5...... Temp.sensor,primarycircuitreturn(optional)
SV*...... Pressurereliefvalve(for steam-10bar)
ST ...... Safety termostat
* = Included in the scope of delivery
Ps
T1
1
M
9
11
12
13
14
15
Cold water
16
Drain
Heating
on
T4
T3
T5
3519
Pp
8
4
7
18
6
9
9
11
SV
P1
P2
9
Air vent
17
9
14
10
9
Z
Warm water
Circulation
Scope of delivery
T2
1
Drain
17
Heating
off
9
Air vent
6
22
Heat exchanger
hot water output
(secondary)
Heat exchanger
cold water feed
(secondary)
Boiler circuit
feed (primary side)
Boiler circuit return
(primary side)
Ring heating line - return
Ring heating line - feed

9
ECOTHERM
Heat transfer solutions
®
Operating Instructions High Capacity Water Heaters Models EHRE/EHPE & EDRE - ELC 11
Safety Instructions and General Information
Fig. 2b: High capacity water heater model ED using steam boilers
Fig 2a: High capacity water heater model EH (with external descale funktion)
Ps
T2
1
M
9
11
12
13
14
15
9KW
16
Drain
17
T1
HE feed
Heating off
Heating on
T4
T3
T5
3519
Pp
8
4
7
18
9
9
11
HW feed HW return
HE return
SV
P1
P2
9
Air vent
17
17
9
9
14
10
9
Z
WW
Circulation
Scope of delivery
Ring heating line - return
Ring heating line - feed
M
M
M
2
Ps
6
T2
1
9
11
12
13
14
15
9Cold water
16
Drain
17
T1
Heating
off
Heating
on
T3
3
19
8
18
6
SV
5
P1
P2
9
Air vent
17
17
9
9
14
10
9
Z
Warm water
Circulation
Scope of delivery
2Return
Condensate
steam supply
T4
ST
M
20
21
22
Heat exchanger
hot water output
(secondary)
Heat exchanger
cold water
feed
(secondary)

10
ECOTHERM
Heat transfer solutions
®
Operating Instructions High Capacity Water Heaters Models EHRE/EHPE & EDRE - ELC 11
Packaging - Compliance statement
2.5 Packaging
The ECOTHERM high capacity water heater
is delivered in three packaging units:
●Hot water storage tank with connectors
and rating plate for tank.
● Fibre-eeceinsulationwithacasing
made of synthetic material
●Tube bundle heat exchanger with
connecting pipework and support leg,
microprocessor control unit, heating
waterpump(formodeltypeEHonly).
Frontcover(optional)
2.6 Compliance statement
●CerticationaccordingtoSVGW
●Electrical type tests for household appliances according to
 EN61000-6-2
 EN61000-6-3
 EN61000-6-4

T
S
SD2
S
D1
F
B
P
11
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Operating Instructions High Capacity Water Heaters Models EHRE/EHPE & EDRE - ELC 11
3. Installation and assembly
Installation and Assembly
Storage
capacity B D1 D2 F min. S min. TP min.
Tank
weight
empty
Liter mm mm mm mm mm mm mm kg
300 500 500 660 1000 600 1460 1860 x 1060 60
540 500 650 810 1000 600 1610 2010 x 1210 80
750 500 750 910 1000 600 1710 2110 x 1310 110
1000 500 890 1110 1200 600 1910 2310 x 1510 130
1250 500 1000 1220 1200 600 2020 2420 x 1620 197
1500 500 1100 1320 1200 600 2120 2520 x 1720 228
2000 500 1250 1470 1400 600 2270 2670 x 1870 335
2500 500 1350 1570 1400 600 2370 2770 x 1970 417
3000 500 1350 1570 1400 600 2370 2770 x 1970 470
4000 500 1500 1720 1600 600 2520 2920 x 2120 681
5000 500 1700 1920 1600 600 2720 3120 x 2320 940
3.1 Space requirement
The EH high capacity water heater should be installed in a
frost-protectedroom.Fortankinstallationthefollowingminimum
clearances shown in the following drawings should be provided.
3.1a Space requirement for additional tanks
For ECOTHERM water heater models with more
than one storage tank, the space requirement
for each additional tank is added to the space
requirementofthemaintank(refertosection3.1).
Storage
capacity D1 D2 S
mini-
mum
Additional
plinth P2
minimum
Liter mm mm mm mm
300 500 660 600 1530 x 1060
540 650 810 600 1710 x 1210
750 750 910 600 1810 x 1310
1000 890 1110 600 2010 x 1510
1250 1000 1220 600 2120 x 1620
1500 1100 1320 600 2220 x 1720
2000 1250 1470 600 2370 x 1870
2500 1350 1570 600 2470 x 1970
3000 1350 1570 600 2470 x 1970
4000 1500 1720 600 2620 x 2120
5000 1700 1920 600 2820 x 2320
P = Plinth or Platform
(optional, scope of
building)
Fig 3: Space requirements for type
EH high capacity water heater
Table 1: Clearance distances for the high capacity water heater
P2= Additional plinth or
platform
(optional,scopeofbuilding)
Fig 4: Space requirement per additional tank
Table 1a: Space requirement per additional storage tank
S
SD2
S
D1
P2
S
Additional tank Main tank

12
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1
2
3
4
5
6
8
7
Operating Instructions High Capacity Water Heaters Models EHRE/EHPE & EDRE - ELC 11
WARNING:
The heat exchanger must not be insulated!
Installation and Assembly
Fig 5: Tank installation
3.2 Installation (see Fig. 5 and 6)
● Locateandalignthetank(Item1)into 
the installation position.
ATTENTION: Leave the tank legs (item 2)
freelystanding.Donotscrewthemtotheoor,
otherwise the manufacturer’s warranty will be
invalidated.
●Arrange the insulation shell halves
(200,300,540,750,850litres)
respectivelytwo-partor3-part
(startingat940litres-seegure
5)aroundthetankandsecurewith
clamping rings at top and bottom
● Afxthetankunitratingplate(Item5) 
below the heat exchanger rating plate
 (r.h.sideofcontroller).
3.3 Heat exchanger assembly
● Connect the heat exchanger block
 (Item6)tothetankviatheange 
 connections(Item7).
● Align the adjustable bottom support
 (Item8)
● InsertthethermocouplesT1(Item9),T2
 (Item10)intotheappropriateimmersion 
 sleeves(Item12)onthetankandtighten
 thePGscrewttings.Forstart-upuse
enclosed heat transfer paste.
1 Storage tank
2 Tank legs
3 Fibre-fleece insulation
with violett aluminium
chasing
4 Clamping rings,
removeable
5 Rating plate
6 Heat exchanger block
7 Flange connections
8 adjustable bottom support
9 Immersion sleeves
3.4 Cover assembly (see red
arrow)
● The heat exchanger block
cover can be moved in front of
the heat exchanger block by
lightly lifting at the front.
● The two parts are secured at
the top by sheet metal edges and
at the bottom by a
hinge.

N10
N9
N8
N7
H
M
L
N3
N6
G
N2
N5 E
KN1
A
N4
C
J
135 90
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Operating Instructions High Capacity Water Heaters Models EHRE/EHPE & EDRE - ELC 11
3.5 Connection Dimensions and Heights
Fig 6: Connection schema
Table 1b: Secondary circuit connections (Primary circuit
connections: Refer to section 4.10)
Table 1c: Connection heights
Storage
capacity A J K C L E G, M H
Liter mm mm mm mm mm mm mm mm
300 115 280 300 440 1100 940 1670 1850
540 115 280 300 440 1100 940 1670 1940
750 115 280 300 440 1100 940 1670 1980
1000 115 280 300 440 1100 940 1670 1980
1250 115 280 300 440 1100 940 1670 2000
1500 115 280 300 440 1100 940 1670 2010
2000 115 280 300 440 1290 1190 1670 2030
2500 115 280 300 440 1290 1190 1670 2540
3000 115 280 300 440 1290 1190 1670 2580
4000 115 280 300 440 1290 1190 1670 2610
5000 115 280 300 440 1290 1190 1670 2620
Installation and assembly
Connection Size Angle ° Description
N1 below 2000L 1“ ext 90° Drain
N1 from 2000L 6/4“ ext 90° Drain
N2 2“ ext 270° Cold water inlet
N3 below 2000L DI 200 270° Cleaning flange
N3 from 2000L DI 400 270° Manhole
N4 up to 300kW 5/4“ ext 90° Water outlet to external
heat exchanger
N4 above 300 kW
or from 425 kW
6/4“ ext
2“ ext 90° Water outlet to external
heat exchanger
N5, N6 1/2“ int 90° Temperature sensors
N6=T1(on), N5=T2(off)
N7 6/4“ ext 270° Circulation
N8 up to 300 kW 5/4“ ext 90° Hot water from external
heat exchanger
N8 above 300kW
or from 425 kW
6/4“ ext
2“ ext 90° Hot water from external
heat exchanger
N9 1“ int on top Air vent
N10 2“ ext 270° Hot water outlet

14
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Operating Instructions High Capacity Water Heaters Models EHRE/EHPE & EDRE - ELC 11
Installation
4. Connection piping
4.3 Hot water connection
The hot water connection should be
ttedwithashut-offvalveprovided
by the customer.
ATTENTION:
Whenclosingtheshut-offvalveto
thetankrstensurethattheprimary
boiler circuit is turned off, otherwise
the rise in pressure in the heat
exchanger may cause damage to
vital parts of the Economizer.
4.4 Circulation pipeline
Ashut-offdeviceshouldbettedat
the circulation pipeline inlet to the
storage tank.
When using a circulation pump, this
can be controlled via the controller
with a freely programmable timing
programme.
The circulation pipeline should
bettedwithanon-returnvalve.
To reduce standby losses, the
circulation pipeline should be
provided with appropriate insulation.
4.1 General remarks
When connecting, the regulations
of the local water supply companies
or, respectively, the applicable
standards should be observed.
Copper or steel water pipes leading
to the tank should be electrically
isolated. Only use stainless steel
or brass dummy plugs. Immersion
sleeves must be stainless steel only.
The following DIN regulations have
to be observed during installation:
DIN1988Part2:Start-upand
safety of components and
accessories of water heaters.
DIN 4753 Part 1: Cold water feed
components and layout.
Tchnical Control Regulation W551:
Avoiding Legionella growth in
drinking water heating and piping
equipment.
4.2 Cold water connection
The cold water supply should
bettedwithapprovedsafety
devicesspeciedinDIN4573part
1, section 6.3.1. In addition, the
coldwaterinletshouldbetted
withabackushlterwith50-60
µmmesh.Connectionsshouldbe
pressure resistant.
The operating pressure stated
on the rating plate must not be
exceeded. With higher line pressure
apressurereducershouldbetted,
whose function can be checked via
a downstream test valve.
Thenon-returndeviceshould
meet the requirements of DVGW
worksheet W376. Up to 1000
litre tank capacity a pressure
gauge connecting piece should
be provided, above 1000 litres a
permanentlyttedpressuregauge
is required.
Warning:
It is of utmost importance that the
safety guidlines in section 2.3 on
page 5 are followed. Failure to do
so may cause personal injury.
4.5 Ventilation
The ventilation connecting piece
shouldbettedwithashut-off
device. It is recommended to
provide continuation pipework to
drain water escaping during the
ventilation process.
4.6 Drainage
The drainage connecting piece
shouldbettedwithashut-off
device. The continuation pipeline
should be installed with a fall.
4.7 Primry circuit connection to
boiler
The primary circuit connection
shouldbettedwithshut-offvalves
in the delivery and return lines.
In addition for model type EH it is
recommendedtota150-200
µmmeshlterintheheatingwater
delivery line. Connection to the
primary circuit feed and return lines
of the high capacity water heater
should be made using a quick
screwreleaseorangedunion.
Hot water supply
E-brassisolatingttings*
Stainless steel sensor thermowell
Magnesium anode
Continuous current anode for
stainelss steel storage tank
Heating water from boiler
Return to boiler
Heating water from boiler
Return to boiler
Cold water supply
E-brassisolatingttings*
E-brassisolatingttings*
* Galvanised with copper, steel & piping

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Operating Instructions High Capacity Water Heaters Models EHRE/EHPE & EDRE - ELC 11
Connection
Before starting-up the pressure vessels it is absolutly
necessary to re-tighten the bolts!
torque ...min. 17,7 Nm
(max.30Nm)
Before opening the ange make sure you have a new
gasket ready!
Table 2: Heat exchanger and pump models for High Capacity Water Heater
4.10 Primary control valve and primary side connection dimensions(Pressure drop 0.1 bar max. when fully open)
Table 3: Heat exchanger primary side connection dimensions and control valve specications
Valve drive used:
230V;3-point;60sec.HoneywellTypeML6420A3015
4.9 Heat exchanger, pumps and valves for EH water heater
Modulating2-
control valve
Modulating
3-waycontrol
valve
Heating connection
and line dimension Heat exchanger type / rating kW Primary control valve specification
Honeywell
V5011R1075 Honeywell V5013R1073 1 1/4“ / DN32 WT50/100-180kW KVS-Value16
max. closing pressure: 7 bar
Honeywell
V5011R1083 Honeywell V5013R1081 1 1/2“ / DN40 WT65/200-350kW KVS-Value25
max. closing pressure: 4,6 bar
Honeywell
V5011R1091 Honeywell V5013R1099 2“ / DN50 WT80/375-500kW KVS-Value40
max. closing pressure: 2,6 bar
Heat
exchanger
capacity
kW
Q-
flow
secondary
m3/h
Pump
type
secondary
Pump
nomimal
current
A
Q-
flow
primary
m3/h
Pump
type
primary
Pump nomimal
current
A
100 1,8 UPS25-80N 0,7 4,29 Magna1 25-80 0.09 - 1.03
150 2,69 UPS25-80N 0,7 6,43 Magna1 25-100 0.09 - 1.42
200 3,59 UPS32-80N 0,98 8,58 Magna1 32-120 F 0.17 - 1.48
250 4,49 UPS32-80N 0,98 10,72 Magna1 40-100 F +Ausgleichstück 0.19 - 1.65
300 5,38 UPS32-100N 1,52 12,86 Magna1 40-150 F 0.18 - 2.71
350 6,28 UPS32-100N 1,52 15,00 Magna1 65-150 F 0.31 - 5.53
400 7,18 UPS32-100N 1,52 17,15 Magna1 50-180 F 0.24 - 3.4
450 8,08 UPS32-100N 1,52 19,30 Magna1 65-150 F 0.31 - 5.53
500 8,62 UPS32-120F 1,75/TF 21,44 Magna1 65-150 F 0.31 - 5.53
550 4,90 UPS32-120FB 1,75/TF 23,60 Magna1 65-150 F 0.31 - 5.53
600 10,77 UPS32-120FB 1,75/TF 25,73 Magna1 65-150 F 0.31 - 5.53
(valid for primary 75°C --> 55°C, secondary 12°C --> 60°C)
TF ... Pumpe mit Thermofühler
TIP:
At a water hardness over than 15°
dH we recommend a water softener
station.
4.8 Re-tighten of the ange bolts
(seeframedtextandtheadhesive
labelsontheangeplate)

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Operating Instructions High Capacity Water Heaters Models EHRE/EHPE & EDRE - ELC 11
Electrical Load
5. Electrical Connection
5.1 General remarks, Safety guidelines, warnings:
The cables have to be connected and installed in the
way that the wirings for the thermal contact cannot touch
any energized parts.
If a connected pump doesn't decree a thernal contact,
the intended cables have to be interconnected.
Technical data:
Voltage supply ±5%: 230V/50Hz
The maximum overall performance of all devices
powered by the control unit and the control unit itself:
2300VA
The connection to mains power is to be carried out at the
network terminal X1.
Storageandtransportation:  -20°Cto60°C
Max. rel. Air humidity: 90 % not condensed
Operationtemperature:   0-50°C
Savings* ELC11:
F1-2,5Tforremainingrelayexits
F2-6,3ATforrelayexitsecondarypump
F3-6,3ATforrelayexitprimarypump
F4-125mATfortransformatorpre-savings
F5-2,5ATforrelayexitcontrolvalveOPEN/CLOSE
F6-1ATfortransformatoraftersavings
(*=seearticle5.3)
●Before opening the housing, make sure that it is disconnected from the mains.
●ÖVE and VDE regulations for electrical connections must be observed.
●Electrical installation must be carried out by qualified specialist personnel.
● Amainspowermulti-poledcircuitbreakermustbeconnected.Rating16Aslow.
●Earthing cable must be properly connected.
●The water cooler must be supplied with uninterrupted electrical power during operation.
● Onlyreplacefuseswithoriginalfuses(seebelow).
●The appliance may only be assembled in a dry room corresponding to fouling degree 2.
●There must be an easily accessible decollator in the supply current circuit!
●Warning: Only connect and switch the mains power supply on, once the cabling of the primary
 andsecondarypumps(PpandPs)andthemodulatingcontrolvalveiscompleteandhasbeen
checked!
●Danger of faulty wiring:
 - Dangerofanelectricshock
 - Damagetoordestructionofthecontrolunitortheconnecteddevices
●Inspection of the cabling of the primary and secondary pumps:
Checkthepassage(themeasuredresistancemustalwaysbelessthan10Ohm):
-ConnectionNattheoutputofthecontrolunit←→connectionNatthepump
-ConnectionLattheoutputofthecontrolunit←→connectionLatthepump
Checktheisolations(themeasuredresistancemustalwaysbegreaterthan1Megaohm!): 
-ConnectionNatthepump←→bothwiringsforthethermalcontact   
-ConnectionLatthepump←→bothwiringsforthethermalcontact

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Operating Instructions High Capacity Water Heaters Models EHRE/EHPE & EDRE - ELC 11
Electrical Load
Table 4: Electric connected load of appliances
Type Heat exchanger capacity*
kW
Electrical
connected capacity**
VA
EH-100/... 100 440 (230V)
EH-120/... 120 420 (230V)
EH-140/... 140 420 (230V)
EH-160/... 160 600 (230V)
EH-180/... 180 620 (230V)
EH-200/... 200 620 (230V)
EH-225/... 225 770 (230V)
EH-250/... 250 620 (230V)
EH-275/... 275 770 (230V)
EH-300/... 300 770 (230V)
Type Heat exchanger capacity*
kW
Electrical
connected capacity **
VA
EH-325/... 325 1220 (230V)
EH-350/... 350 1450 (230V)
EH-375/... 375 1210 (230V)
EH-400/... 400 1210 (230V)
EH-425/... 425 1210 (230V)
EH-450/... 450 1450 (230V)
EH-475/... 475 1600 (230V)
EH-500/... 500 2670 (230V/400V)
EH-550/... 550 2670 (230V/400V)
EH-600/... 600 2670 (230V/400V)
5.2 Electrical loading
5.3 Electrical connection diagram
Figure 7
12345678
A
B
C
D
E
F
12345678
A
B
C
D
F
Bearb.
Gepr.
Norm
Datum
Urspr. Ers. f. Ers. d. Bl.
=
+
E
NameDatumÄnderungZust. von
Blatt
A-4070 Eferding
Energie-Technik GmbH
17
16
A-4081 Hartkirchen
ECOTHERM Austria GmbH
Karlingerstr. 8
Moaly
Prüfschaltschrank Sigmatek
09_10_024 19
18
ELC11
F4 F5
F2 F3
F1
STATUS
F6 1,0AT
125mAT
2,5AT
6,3AT
6,3AT
Trafo
Trafo_vor
Trafo_nach
Pp Ps
RV_auf/zu
2,5AT
Rel./Spül
ELC11
1X1
2
3
1X2
2
3
1
X3
2
3
1
X4
2
3
1
X5
2
3
4
1
X12
2
1
2
X13
1
X6
2
3
4
1
X7
2
3
4
1
X8
2
3
4
1
X9
2
3
4
1
X10
2
3
4
1
X11
2
3
4
1
X14
2 3
1
X15
2 3
1
X16
2 3
1
X17
2 3
1
X18
2 3
1
X19
2 3
1
X20
2 3
1
X21
2
1
X22
2
1
X23
2
1
X24
2
1
X25
2
1
X26
2
1
X27
2
1
X28
2 3 4
1
X29
2
PE
6
X100
5
4 3
2
1
-1A1
State
after
open / close
forward
flush

18
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Figure 9
Operating Instructions High Capacity Water Heaters Models EHRE/EHPE & EDRE - ELC 11
Electrical Load
Figure 8
87654321
A
B
C
D
E
F
A
B
C
D
F
Datum =
+
E
ECOTHERM Austria GmbH
18
X14 X15 X16 X17 X18 X19 X20 X21 X22 X23 X25 X26 X27 X28 X29X24
Ventil
unten
Ventil
oben
Fernst. TK Pp TK Ps T1 T2 T3 T4 T5 T6 T7 CAN-Bus
OUT
CAN-Bus
IN
Legion.Diff.-
Drucksens.
X100
Progr.
VARANETHERNUSB
CAN ETV0501
12
-X4
1
2
3
4
5
6
-X5
1+24V2 2DI1
3GND
1+24V2 2DI2
3GND 1+24V2 2DI3
3GND
1+24V2 2DI4 3GND
1+24V2
2DI5
3GND
1+24V2 2DI6
3GND
1+24V2
2AI1 3GND
1AI2 2AGND
1AI3
2AGND
1AI4 2AGND 1AI5
2AGND 1AI6
2AGND
1AI7 2AGND
1AI8
2AGND
1+24V1
2CAN_A 3CAN_B 4GND
1CAN_A
2CAN_B
1
2
3
4 5 6
-1A1
PT1000
Ladetemp.
..
-T3
PT1000
Heizung-VL
..
-T4
PT1000
Speicher
oben
..
-T1
PT1000
Speicher
unten
..
-T2
PT1000
Heizung-RL
Option
..
-T19.9
bn
+gn Yye
-
-P-Diff.
ZU AUF ZU AUF
(SR230A)-2SA
S1 S2 S3 S4 S5
S6
-Ext.Sp.V1
(SR230A)-2SA
S1 S2
S3 S4
S5 S6
-Ext.Sp.V2
11 33 44
6
6
77
99
1010 12
12
2 5
8
11
-X1
M~
TK
T2
T1
-Pp
M~
TK
T2 T1
-Ps
Steckerbelegung Kleinspannung
siehe: Steckerbelegung 230V AC
Touch Control Panel
2
GND 1 +24
1
A2 B3
A4 B5
GND 6
+5V
X1 X2 X3
-1A1
FRONT
USB
Stecker auf Rückseite
1 2
-Fernst.
1 2
-Legion.
Bügel wenn Pumpe
ohne TK
1 2
-W14
1 2
-W15
1
2
-W16
1
2
-W17
1
2 1
2
-W18 -W19
1 2
3 1
2
-W20 -W21
1
2
-W22
1 2
-W23
1 2
-W24
1 2
-W25
1
2
1
2
-W26 -W27
ro ge ws
sw
-W28
EXTERN
INTERN
87654321
A
B
C
D
E
A
B
C
D
E
17 19
X1-230VAC X2 X3 X4 X5 X6 X7 X8 X9 X10 X11 X12 X13
Netz 230V Pp Ps VentilSpülung 1Spülung 2Spülung 3Spülung 4Reserve 1Reserve 2
Brenner
Pot.-frei
Störung
Pot.-frei
1L 2N
3PE 1L 2N
3PE
1L_R01 2N
3PE
1L_R02
2N 3PE
1L_R03 2L_R04
3N
4PE
1L_R05_NC 2L_R05_NO 3N
4PE
1L_R06_NC 2L_R06_NO 3N
4PE
1L_R07_NC 2L_R07_NO
3N
4PE
1L_R08_NC 2L_R09_NO
3N 4PE
1L_R09_NC 2L_R09_NO
3N 4PE
1L_R10_NC 2L_R10_NO 3N 4PE
1L_R11_C
2L_R11_NO
1L_R12_C
2L_R12_NO
-1A1
Netz 230V
50Hz
L N
PE
Netz 400V
50Hz
L1
L2 L3 PE
Ausführung bei
400V-Pumpe
K1
M3~
1
2
3
4
5
6
A1
A2
230V
400V
TK
L1
L2 L3
T1
T2
L
N PE
PE
L1 L2 L3
-Pp
M~
TK
L N
PE
T1
T2
-Pp
M~ Brenner-
anforderung
L
L`
-BA
Störmeldung
L
L`
-SM
Steckerbelegung 230V AC
Regelventil
ML6420A
230V
3-Pkt.
N
1
1
2
2
3
3
A
5
B
-RV
LF230
N
1
1
2
PE
-Ext.Sp.KWa
LF230
N
1
1
2
PE
-Ext.Sp.KWe
SR230A
-2SA
3
L
2
L
1
N
PE
-Ext.Sp.V1
SR230A
-2SA
3
L
2
L
1
N
PE
-Ext.Sp.V1
TK
L
N
PE
T1
T2
-Ps
sw
bl gg
sw
bl gg
-W3 -W4
1 2 3
-W5 -W6
1 2 3
gg
gg
1 2 3
gg
-W7
gg
2 1
-W8
gg
2 1
-W9
gg
2 1
-W10
gg
2 1
-W11
1
-W12
2
1 2
-W13-W1
sw
bl gg
N 1 2 3 5
N 1 PE N 1 PE
3 2 1 PE 3 2 1 PE
EXTERN
INTERN
Net Valve Exscale 1 Exscale 2 Exscale 3 Exscale 4 Burner
Pot.-free
Failure
Pot.-free
INTERNAL
EXTERNAL
Performance at
400 V pump
Net 230V
50Hz
Net 400V
50Hz
Control valve
-RV
Burner
demands
failure message
PIN ALLOCATION 230V AC
PIN ALLOCATION LOW VOLTAGE
Valve
below
Valve
above
Remote
control
Diff. Pressure
sensor
INTERNAL
EXTERNAL
Remote
control
Boiler
above
Boiler
below
Charging
temp.
Heating-VL Heating-RL
Option
Closed Open Closed Open
See: Pin allocation 230V AC
Plug on backside

19
ECOTHERM
Heat transfer solutions
®
Operating Instructions High Capacity Water Heaters Models EHRE/EHPE & EDRE - ELC 11
Electrical Load
PIN ALLOCATION 230V AC SUPPLY
X1 - 230 V AC feeder
3-poledconnectorPhönixRM5,08
Pin Signal Function  CableYSLY-JB3x1,5
1 L Phase Black
2 N Neutral wire Blue
3  PE  Earthwire   Yellow-green
Pin Signal Function  CableYSLY-JB3x1,5
1 L Phase Black
2 N Neutral wire Blue
3  PE  Earthwire   Yellow-green
X2 - 230 V AC earthing
3-poledconnectorPhönixRM5,08
X4 - 230 V AC Relay output secondary pump
3-poledconnectorPhönixRM5,08
PIN ALLOCATION 230V AC RELAY OUTPUT
X3 - 230 V AC Relay output primary pump
3-poledconnectorPhönixRM5,08
Pin Signal Function  CableYSLY-JB3x1,5
1 LRO1 RO1: primary pump Black
2 N Neutral wire Blue
3  PE  Earthwire   Yellow-green
Pin Signal Function  CableYSLY-JB3x1,5
1 LRO2 RO2: secondary pump Black
2 N Neutral wire Blue
3  PE  Earthwire   Yellow-green
X5 - 230 V AC Relay output return flow valve open/closed
4-poledconnectorPhönixRM5,08
Pin Signal Function  CableYSLY-JZ4x1
1 LRO3 RO3: return flow valve open 1
2 LRO4 RO4: return flow valve closed 2
3 N Neutral wire 3
4  PE  Earthwire    Yellow-green

20
ECOTHERM
Heat transfer solutions
®
Operating Instructions High Capacity Water Heaters Models EHRE/EHPE & EDRE - ELC 11
Electrical Load
X6 - 230 V AC Relay output external flushing 1
4-poledconnectorPhönixRM5,08
Pin Signal Function CableYSLY-JZ4x1
1 LRO5_NC RO5:ExternalFlushing1(NC)  1
2 LRO5_NO RO5:ExternalFlushing1(NO)  2
3 N Neutral wire 3
4 PE   Earthwire   Yellow-green
X7 - 230 V AC Relay output external flushing 2
4-poledconnectorPhönixRM5,08
Pin Signal Function CableYSLY-JZ4x1
1 LRO6_NC RO6:ExternalFlushing2(NC)  1
2 LRO6_NO RO6:ExternalFlushing2(NO)  2
3 N Neutral wire 3
4 PE   Earthwire   Yellow-green
X8 - 230 V AC Relay output external flushing 3
4-poledconnectorPhönixRM5,08
Pin Signal Function CableYSLY-JZ3x1
1 LRO7_NC RO7:ExternalFlushing3(NC) 
2 LRO7_NO RO7:ExternalFlushing3(NO)  1
3 N Neutral wire 2
4 PE   Earthwire   Yellow-green
X9 - 230 V AC Relay output external flushing 4
4-poledconnectorPhönixRM5,08
Pin Signal Function CableYSLY-JZ3x1
1 LRO8_NC RO8:ExternalFlushing4(NC) 
2 LRO8_NO RO8:ExternalFlushing4(NO)  1
3 N Neutral wire 2
4 PE   Earthwire   Yellow-green
X10 - 230 V AC Relay output RESERVE 1
4-poledconnectorPhönixRM5,08
Pin Signal Function CableYSLY-JZ3x1
1 LRO9_NC RO9:ExternalFlushing1(NC) 
2 LRO9_NO RO9:ExternalFlushing1(NO)  1
3 N Neutral wire 2
4 PE   Earthwire   Yellow-green
X11 - 230 V AC Relay output RESERVE 2
4-poledconnectorPhönixRM5,08