CIAT Ereba He Series User manual

Instruction manual
05 - 2019
10195
Inverter Reversible Air-to-Water
Heat Pumps
EREBA He

EREBA He EN-2
CONTENTS
ACRONYMS AND LEGEND .................................................................................5
Acronyms .......................................................................................................................5
Control Configuration Legend..........................................................................................5
Standard installation Legend ...........................................................................................6
1 - INTRODUCTION..............................................................................................7
1.1 - Introduction..............................................................................................................7
1.2 - Safety.......................................................................................................................7
1.3 - Preliminary checks..................................................................................................13
1.4 - Dimensions and clearance for EREBA He units......................................................14
1.5 - Physical data and electrical data of EREBA He units ..............................................16
1.6 - Accessories ............................................................................................................18
2 - INSTALLATION OF UNIT ...............................................................................19
2.1 - General...................................................................................................................19
2.2 - Moving and placing the unit ....................................................................................19
2.3 - Water connections ..................................................................................................21
2.4 - Electrical connections.............................................................................................26
2.5 - Water flow rate control ............................................................................................28
2.6 - Commissioning modes ...........................................................................................32
2.7 - Check before start the unit ......................................................................................32
3 - INSTALLATION OF SYSTEM .........................................................................33
3.1 - General customer electrical connection on terminal block ......................................33
3.2 - First step of configuration: Setting the time and day................................................34
3.3 - Second step of configuration: Parameter menu ......................................................35
3.4 - Installation with electrical booster heaters ..............................................................36
3.5 - Installation with DHW production ............................................................................39
3.6 - Installation with boiler..............................................................................................43
3.7 - Installation with DHW and pool heating production, boiler and buffer tank..............46
3.8 - Master / Slave installation .......................................................................................49
3.9 - Unit with remote user interface................................................................................54
3.10 - Additional OAT sensor ..........................................................................................56
3.11 - IAT sensor.............................................................................................................56
4 - OPERATION ...................................................................................................58
4.1 - Unit range - EREBA He...........................................................................................58
4.2 - Operating modes ...................................................................................................58
4.3 - Major system components......................................................................................72

EN-3 EREBA He
CONTENTS
GRAPHICS CONTENT
Graphic 1: Available static pressure for 5 to 15 kW units with hydraulic module..............31
TABLES CONTENT
Table 1: Minimum and maximum wire section (per phase) for connection to EREBA He
units ..................................................................................................................27
Table 2: Steps to clean, purge, and define a flow rate for hydraulic circuit.......................29
Table 3:
Actions in WUI parameter menu or Service tools to activate the cleaning purge and
control of flow rate for hydraulic circuit......................................................................29
Table 4: Different operating modes .................................................................................59
Table 5: Possible switches to install on system ...............................................................60
Table 6: Different configurations of pump .......................................................................68
Table 7: Different control logic for main pump .................................................................69
Table 8: Different control logic for additional pump..........................................................69
Table 9: Alarms listing .....................................................................................................80
5 - MAINTENANCE..............................................................................................75
5.1 - Standard maintenance............................................................................................75
5.2 - Tightening torques for the main electrical connections ...........................................77
5.3 - Air heat exchanger ..................................................................................................77
5.4 - Water heat exchanger maintenance........................................................................77
5.5 - Unit maintenance....................................................................................................77
5.6 - Refrigerant volume..................................................................................................77
5.7 - Characteristics of R-410A.......................................................................................78
6 - ALARM DESCRIPTION..................................................................................79
6.1 - Inverter board alarm codes (only for 11-15 kW 1Ph or 3Ph units) ...........................79
6.2 - Alarm listing ............................................................................................................80
7 - PARAMETERS OVERVIEW............................................................................83
7.1 - Parameters list ........................................................................................................83
7.2 - Description of customized DI/DO configurations.....................................................90
8 - START-UP CHECKLIST FOR EREBA He HEAT PUMPS (USE FOR JOB FILE)..91
8.1 - General information ................................................................................................91
8.2 - Available options and accessories..........................................................................91
8.3 - Checks before start of unit ......................................................................................92
8.4 - Checks during operation of unit ..............................................................................92
8.5 - Maintenance checks...............................................................................................93

EREBA He EN-4
FIGURES CONTENT
Figure 1: Transport configuration.....................................................................................19
Figure 2: Offloading configuration ...................................................................................19
Figure 3 : How to remove front panel for 11 & 15 kW units ..............................................20
Figure 4 : How to remove front panel for 5 & 7 kW units ..................................................20
Figure 5 : Opening cable knockouts................................................................................21
Figure 6: Water connection on unit..................................................................................23
Figure 7: Typical diagram of the hydraulic circuit with the hydraulic module ....................24
Figure 8:Hydraulic module equipped with variable speed single pump low available pressure
with expansion tank........................................................................................25
Figure 9: Power connection with Main Switch .................................................................26
Figure 10: Customer electrical connection on terminal block .........................................33
Figure 11: Password screen............................................................................................35
Figure 12: Standard installation with electrical booster heaters.......................................37
Figure 13: Electrical connection on terminal block for electrical booster heaters ............38
Figure 14: Standard installation with DHW production ....................................................40
Figure 15: Electrical connection on terminal block for DHW production..........................41
Figure 16: Standard installation with boiler......................................................................44
Figure 17: Electrical connection on terminal block for boiler............................................45
Figure 18: Standard installation with DHW production, pool heating production ans space
heating (floor heating or radiator/fan coils) .....................................................47
Figure 19: Electrical connection on terminal block for DHW, speace heating, pool heating
production and boiler......................................................................................48
Figure 20: Standard installation with Master / Slave (example with 3 slaves) ..................50
Figure 21: Electrical connection on terminal block for Master / Slave installation ............51
Figure 22: WUI screen for Slave 1...................................................................................54
Figure 23: Electrical connection of remote interface .......................................................54
Figure 24: Electrical connection of additional OAT sensor and IAT sensor......................56
Figure 25: Winter position for unit with hydraulic module.................................................65
Figure 26: Operation of booster and backup...................................................................69
Figure 27: Activation and configuration for drying mode .................................................71

EN-5 EREBA He
ACRONYMS AND LEGEND
Acronyms
IAT Indoor Air Temperature
BPHE Brazed Plate Heat Exchanger
CHWS Chiller Water System
DHW Domestic Hot Water
EHS Electric Heater Stage
EWT Entering Water Temperature
FCU Fan Coil Unit
LWT Leaving Water Temperature
NHC New Hydraulic Control (refer to wiring diagram 'Main control card')
OAT Outdoor Air Temperature
PMV Pulse Modulating Valve
SHC Space Heating / Cooling Control
TR Refrigerant Temperature
UFC Underfloor Cooling
UFH Underfloor Heating
WUI User Interface (Wall-mounted User Interface)
Control Configuration Legend
Steps Table Par. Designation Description Range Default Ex. Unit
Numberof
parameter
Value by Default
of parameter Unit of parameter
Description of different value
which can take the parameter
Different steps to be done
to configure the unit
Name of the table to be
used in Customer Com. Bus
Name of parameter to be
used in Customer Com. Bus
Value given in example and
adapted at the described case
Range of
parameter
Possible to configure by direct access on WUI. Refer to WUI end user Manual.
Check to be done
Advanced Configuration Level (for basic operation no need to modify the setting)

EREBA He EN-6
ACRONYMS AND LEGEND
Standard installation Legend
Label Symbol Designation Notes
-Device Field supplied
-
Acc
Accessory Field mounted
-
Acc
Option Factory mounted
-Balancing valve Field supplied
Balancing to adjust the water flow rate
-Stop valve Field supplied
-Automatic Air vent Field supplied
Automatic air vent(s) on highest position in the loop
Add EXP-T
Additional expansion tank
Field supplied
Additional expansion tank depending the total water in the
loop contend - taking in account the expansion tank (XXL)
embedded in hydraulic module
- Boiler Boiler used to boost or backup the heat pump for comfort
EH1 & EH2 Electrical Heater (1 or 2) Electrical heaters up to two with a max. stages up to 3
Used to boost or backup the heat pump for comfort
EH3
EH3
DHW-Electrical Heater Backup (1 stage)
Domestic Hot Water Electrical Heater - one stage used
to backup DHW (when condtions are out of heat pump
map)
DHW-T Domestic Hot Water - Tank Field supplied
DHW-S Domestic Hot Water - Sensor Accessory to mount on top of the DHW-Tank
Measure DHW-Temperature
DHW-V
B
AB
A
Domestic Hot Water - Valve or Diverting valve
Accessory to be field mounted, it will position the valve
to send either to comfort loop or DHW-T, the processed
water
add_pmp
Additional Water Pump Field Supplied, it is used for comfort loop as a secondary
loop
De-Coupling
Tank
De-Coupling Tank Field Supplied, it is used to connect different water loop
rates as well as to receive the boiler loop
Backup-EH
EH1 EH2
Backup electrical heater
Field Supplied, it is used for comfort loop as a Booster
Heater (HP+EH) or Backup (EH only) when HP is out of
the map.
-Flexible Field supply, it is used to lower vibrations transmissions
if necessary
HTSS
HTSS
T>Tmax
High Temperature Safety Switch Field supplied, use to stop system when UFH max, water
temperature is triggered

EN-7 EREBA He
1 - INTRODUCTION
1.1 - Introduction
Prior to the initial start-up of the EREBA
He units, the people involved should be
thoroughly familiar with these instructions
and technical data for the installation.
The EREBA He outdoor systems are
designed to provide a very high level of
safety and reliability making installation,
start-up, operation and maintenance easier
and more secure. They will provide safe and
reliable service when operated within their
application range.
They are designed for an operating life of 15
years by assuming a 75% utilisation factor;
that is approximately 100,000 operating
hours.
The procedures in this manual are
arranged in the sequence required for
machine installation, start-up, operation and
maintenance.
Be sure you understand and follow the
procedures and safety precautions contained
in the instructions supplied with the machine,
as well as those listed in this guide, such as:
protective clothing such as gloves, safety
glasses, safety shoes and appropriate tools,
and suitable qualifications (electrical, air
conditioning, local legislation).
To find out, if these products comply with
European directives (machine safety, low
voltage, electromagnetic compatibility,
equipment under pressure, etc.) check the
declarations of conformity for these products.
1.2 - Safety
1.2.1 - Installation safety considerations
After the unit has been received, and before it
is started up, it must be inspected for damage.
Check that the refrigerant circuits are intact,
especially that no components or pipes have
shifted or been damaged (e.g. following a
shock). If in doubt, carry out a leak tightness
check. If damage is detected upon receipt
and before signature, immediately file a claim
with the shipping company.
This appliance can be used by children
aged from 8 years and above and
persons with reduced physical, sensory or
mental capabilities or lack of experience
and knowledge if they have been given
supervision or instruction concerning use of
the appliance in a safe way and understand
the hazards involved.
Children shall not play with the appliance.
Cleaning and user maintenance shall not be
made by children without supervision.
Do not remove the pallet or the packaging
until the unit is in its nal position. These
units can be moved with a fork lift truck, as
long as the forks are positioned in the right
place and direction on the unit.
The units can also be lifted with slings (refer
to Figure 1 and 2).
Use slings with the correct capacity, and
always follow the lifting instructions on the
certied drawings supplied for the unit.
Safety is only guaranteed, if these
instructions are carefully followed. If this
is not the case, there is a risk of material
deterioration and injuries to personnel.
DO NOT COVER ANY PROTECTION
DEVICES.
This applies to fuse plugs and relief valves
(if used) in the refrigerant or heat transfer
medium circuits. Check if the original
protection plugs are still present at the
valve outlets. These plugs are generally
made of plastic and should not be used.
If they are still present, please remove
them. Install devices at the valve outlets or
drain piping that prevent the penetration of
foreign bodies (dust, building debris, etc.)
and atmospheric agents (water can form
rust or ice). These devices, as well as the
drain piping, must not impair operation and
not lead to a pressure drop that is higher
than 10% of the control pressure.

EREBA He EN-8
Control:
When the unit is subjected to re, the
uid may then be decomposed into toxic
residues when subjected to the ame :
-Stay away from the unit.
-Set up warnings and
recommendations for personnel in
charge to stop the fire.
-Fire extinguishers appropriate to
the system and the refrigerant type
must be easily accessible.
All precautions concerning handling of
refrigerant must be observed in accordance
with local regulations.
Accumulation of refrigerant in an enclosed
space can displace oxygen and cause
asphyxiation or explosions.
Inhalation of high concentrations of
vapour is harmful and may cause heart
irregularities, unconsciousness, or death.
Vapour is heavier than air and reduces the
amount of oxygen available for breathing.
These products cause eye and skin
irritation. Decomposition products can be
hazardous.
Short-circuit power
This equipment complies with EN 61000-
3-12 provided that the short-circuit power
Ssc is greater than or equal to 1,6 MVA
at the interface point between the user’s
supply and the public system. It is the
responsibility of the installer or user of
the equipment to ensure, by consultation
with the distribution network operator if
necessary, that the equipment is connected
only to a supply with a short-circuit power
Ssc greater than or equal to 1,6 MVA.
1.2.2 - Equipment and components
under pressure
These products incorporate equipment or
components under pressure, produced by
manufacturers. We recommend that you
consult your appropriate national trade
association or the owner of the equipment
or components under pressure (declaration,
re-qualification, retesting, etc.). The
characteristics of this equipment/these
components are given on the nameplate or
in the required documentation, supplied with
the products.
The units are intended to be stored and
operate in an environment where the
ambient temperature must not be less than
the lowest allowable temperature indicated
on the nameplate.
Do not introduce signicant static or
dynamic pressure with regard to the
operating pressures used during operation
or for tests in the refrigerant circuit or in the
heat exchange circuits.
NOTES:
Monitoring during operation, re-
qualication, re-testing, exemption from
retesting:
●Follow local regulations on the monitoring
of pressure-containing equipment.
●The user or the operator is usually
requested to create and maintain a
monitoring and maintenance register.
●In absence of regulation or in addition to
the regulations, follow the guidance in
ISO 5149.
●Follow the local professional
recommendations, whenever they exist.
●Regularly monitor the surface of the
components to detect cavernous
corrosion. To do this check an uninsulated
part of the pressure vessel or at a joint in
the insulation.
●Regularly check for possible presence of
impurities (e.g. silicon grains) in the heat
exchange fluids. These impurities can
cause wear and/or pitting corrosion.
●Filter the heat exchange fluid.
●The reports of the periodical checks by
the user or the operator must be included
in the monitoring and maintenance
register.
1 - INTRODUCTION

EN-9 EREBA He
Repair:
Any repair or modication of a pressure
vessel is prohibited.
Only the replacement of the vessel by
an original part from the manufacturer is
allowed. In this case, the replacement must
be carried out by a qualied technician. The
replacement of the vessel must be entered
in the monitoring and maintenance register.
Recycling:
The pressure equipment can be recycled in
whole or in part. After use they may contain
refrigerant vapours and oil residue. Some
parts are painted.
1.2.3 - Maintenance safety
considerations
Professional technicians working on the
electric or refrigeration components must be
authorized, trained and fully qualified to do
so.
All refrigerant circuit work must be carried out
by a trained person, fully qualified to work
on these units. He must have been trained
and be familiar with the equipment and the
installation. All welding operations must be
carried out by qualified specialists.
The units use high-pressure R-410A
refrigerant (the unit operating pressure
is above 40 bar, the pressure at 35°C air
temperature is 50% higher than for R-22).
Special equipment must be used when
working on the refrigerant circuit (pressure
gauge, charge transfer, etc.).
Do not clean the unit with hot water or
steam. This may cause a pressure increase
of the refrigerant.
Any manipulation (opening or closing)
of a shut-off valve must be carried out
by a qualied and authorised technician,
observing applicable standards (e.g. during
draining operations). The unit must be
switched off while this is done.
During any handling, maintenance and
service operations the qualied technician
working on the unit must be equipped with
safety gloves, safety glasses, shoes and
protective clothing.
Never work on a unit that is still energized.
Never work on any of the electrical
components, until the general power supply
to the unit has been cut.
If any maintenance operations are carried
out on the unit, lock the power supply
circuit in the open position and secure the
machine upstream with a padlock.
If the work is interrupted, always ensure
that all circuits are still de-energized before
resuming the work.
Even if the unit has been switched off,
the power circuit remains energized,
unless the unit or customer circuit
disconnect switch is open. Refer
to the wiring diagram for further
details. Attach appropriate safety
labels. When working in a fan area,
specically if the grilles have to be
removed, isolate the power supply to
the fans to prevent their operation.
The variable frequency drives
(VFD) tted to the units have circuit
capacitors whose discharge time is
ve (5) minutes after disconnecting
the power supply.
Therefore, after disconnecting the
power supply of the control box, wait
for 5 minutes before access it.
Before any intervention, verify that
there is no voltage present at any
accessible conducting parts of the
power circuit.
Moreover be careful of contact with
zones at hot temperature inside
the unit, which can exist after the
operation of unit (refrigerant and
electronic parts).
1 - INTRODUCTION

EREBA He EN-10
1 - INTRODUCTION
It is recommended to install an
indicating device to show if part of the
refrigerant has leaked from the valve.
The presence of oil at the outlet orice
is a useful indicator that refrigerant
has leaked. Keep this orice clean to
ensure that any leaks are obvious. The
calibration of a valve that has leaked
is generally lower than its original
calibration. The new calibration may
affect the operating range. To avoid
nuisance tripping or leaks, replace or
re-calibrate the valve.
OPERATING CHECKS:
●IMPORTANT INFORMATION
REGARDING THE REFRIGERANT USED:
This product contains uorinated
greenhouse gas covered by the Kyoto
protocol.
Refrigerant type: R-410A
Global Warming Potential (GWP): 2088
Periodic inspections for refrigerant leaks
may be required depending on European or
local legislation. Please contact your local
dealer for more information.
1. Any intervention on the refrigerant
circuit of this product should be
performed in accordance with the
applicable legislation. In the EU,
the regulation is called F-Gas,
N°517/2014.
2. Ensure that the refrigerant is
never released to the atmosphere
during installation, maintenance
or equipment disposal.
3. The deliberate gas release into the
atmosphere is not allowed.
4. If a refrigerant leak is detected,
ensure that it is stopped and
repaired as quickly as possible.
5. Only a qualified and certified
personnel can perform installation
operations, maintenance,
refrigerant circuit leak test as well
as the equipment disposal and the
refrigerant recovering.
6. The gas recovery for recycling,
regeneration or destruction is at
customer charge.
7. Periodic leak tests have to be
carried out by the customer or by
third parties. The EU regulation
set the periodicity here after:
System WITHOUT
leakage detection No Check 12 Months 6 Months 3 Months
System WITH leakage
detection No Check 24 Months 12 Months 6 Months
Refrigerant charge/circuit
(CO2equivalent) < 5 Tons 5 ≤ Charge
< 50 Tons
50 ≤ Charge
< 500 Tons
Charge >
500 Tons(1)
Refrigerant charge/ Circuit (kg)
R134A
(GWP 1430)
Charge <
3.5 kg
3.5 ≤
Charge <
34.9 kg
34.9 ≤
Charge <
349.7 kg
Charge >
349.7 kg
R407C
(GWP 1774)
Charge <
2.8 kg
2.8 ≤
Charge <
28.2 kg
28.2 ≤
Charge <
281.9 kg
Charge >
281.9 kg
R410A
(GWP 2088)
Charge <
2.4 kg
2.4 ≤
Charge <
23.9 kg
23.9 ≤
Charge <
239.5 kg
Charge >
239.5 kg
HFO’s:
R1234ze No requirement
(1) From 01/01/2017, units must be equipped with a leakage detection system
8. A logbook must be established for
equipments subject to periodic leak
tests. It should contain the quantity
and the type of fluid present within the
installation (added and recovered), the
quantity of recycled fluid, regenerated
or destroyed, the date and output of the
leak test, the designation of the operator
and its belonging company, etc.
9. Contact your local dealer or installer if
you have any questions.
Protection device checks:
●If no national regulations exist, check the
protection devices on site in accordance
with standard ISO 5149: every five years
for external relief valves.
NOTE: The following statements are only
indicated if a pressure switch is available
on the unit.
The company or organisation that conducts
a pressure switch test shall establish and
implement a detailed procedure to fix:
- Safety measures
- Measuring equipment calibration
- Validating operation of protective
devices

EN-11 EREBA He
- Test protocols
- Recommissioning of the equipment.
Consult Service for this type of test. The
manufacturer mentions here only the principle
of a test without removing the pressure switch:
- Verify and record the setpoints of
pressure switches and relief devices
(valves and possible rupture discs)
- Be ready to switch-off the main
disconnect switch (on the unit or on the
installation) of the power supply if the
pressure switch does not trigger (avoid
over-pressure)
- Connect a calibrated pressure gauge
(with Schrader female port of ½ UNF)
Inspect the protection devices such
as valves.
If the machine operates in a corrosive
environment, inspect the protection
devices more frequently.
Check regularly for leaks and repair
immediately. Ensure regularly that
the vibration levels remain acceptable
and close to those at the initial unit
start-up.
Before opening a refrigerant circuit,
transfer the refrigerant to bottles
specically provided for this purpose
and consult the pressure gauges.
Change the refrigerant after an
equipment failure, following a
procedure such as the one described
in NF E29-795 or carry out a refrigerant
analysis in a specialist laboratory.
If the refrigerant circuit remains
open after an intervention (such as a
component replacement, etc.):
●Seal the openings if the duration is
less than a day
●If more than 1 day, charge the
circuit with oxygen free nitrogen
(inertia principle).
Theobjective istopreventpenetration
of atmospheric humidity and the
resulting corrosion.
1.2.4 - Repair safety considerations
All installation parts must be maintained by
the personnel in charge to avoid deterioration
and injury. Faults and leaks must be repaired
immediately. The authorized technician must
have the responsibility to repair the fault
immediately. After each unit repair check
the operation of the protection devices and
create a 100% parameter operation report.
Comply with the regulations and
recommendations in unit and HVAC
installation safety standards, such as: ISO
5149.
If the supply cord is damaged, it must be
replaced by the manufacturer, its service
agent or similarly qualied persons in order
to avoid a hazard.
RISK OF EXPLOSION
Never use air or a gas containing oxygen
during leak tests to purge lines or to
pressurise a machine. Pressurised air
mixtures or gases containing oxygen can
be the cause of an explosion. Oxygen reacts
violently with oil and grease.
Only use dry nitrogen for leak tests, possibly
with an appropriate tracer gas.
If the recommendations above are not
observed, this can have serious or even fatal
consequences and damage the installation.
Never exceed the specied maximum
operating pressures. Verify the allowable
maximum high- and low-side test pressures
by checking the instructions in this manual
and the pressures given on the unit name
plate.
Do not unweld or amecut the refrigerant
lines or any refrigerant circuit component
until all refrigerant (liquid and vapour) as well
as the oil have been removed from the heat
pump. Traces of vapour should be displaced
with dry nitrogen. Refrigerant in contact with
an open ame can produce toxic gases.
The necessary protection equipment
must be available, and appropriate re
extinguishers for the system and the
refrigerant type used must be within easy
reach.
1 - INTRODUCTION

EREBA He EN-12
Do not siphon refrigerant.
Avoid spilling liquid refrigerant on skin
or splashing it into the eyes. Use safety
goggles and safety gloves. Wash any spills
from the skin with soap and water. If liquid
refrigerant enters the eyes, immediately
and abundantly ush the eyes with water
and consult a doctor.
The accidental releases of the refrigerant,
due to small leaks or signicant discharges
following the rupture of a pipe or an unexpected
release from a relief valve, can cause frostbites
and burns to personnel exposed. Do not
ignore such injuries. Installers, owners and
especially service technicians for these units
must:
-Seek medical attention before
treating such injuries.
-Have access to a first-aid kit,
especially for treating eye injuries.
We recommend to apply standard ISO 5149.
Never apply an open ame or live steam to a
refrigerant circuit. Dangerous overpressure
can result.
During refrigerant removal and storage
operations follow applicable regulations.
These regulations, permitting conditioning
and recovery of halogenated hydrocarbons
under optimum quality conditions for the
products and optimum safety conditions
for people, property and the environment
are described in standard NF E29-795.
The units must never be modied to add
refrigerant and oil charging, removal and
purging devices. All these devices are
provided with the units.
Refer to the certied dimensional drawings
for the units.
It is dangerous and illegal to re-use
disposable (non-returnable) cylinders or
attempt to rell them. When cylinders are
empty, evacuate the remaining gas pressure,
and move them to a designated place for
recovery. Do not incinerate.
Do not attempt to remove refrigerant circuit
components or ttings, while the machine
is under pressure or while it is running.
Be sure pressure is at 0 kPa and that the
unit has been shut-down and de-energised
before removing components or opening a
circuit.
Do not attempt to repair or recondition any
safety devices when corrosion or build-up
of foreign material (rust, dirt, scale, etc.) is
found within the valve body or mechanism.
If necessary, replace the device. Do not
install safety valves in series or backwards.
No part of the unit must be used
as a walkway, rack or support.
Periodically check and repair or if
necessary replace any component or
piping that shows signs of damage.
Do not step on refrigerant lines. The
lines can break under the weight and
release refrigerant, causing personal
injury.
Do not climb on a machine. Use a
platform, or staging to work at higher
levels.
Use mechanical lifting equipment
(crane, hoist, winch, etc.) to lift or
move heavy components. For lighter
components, use lifting equipment
when there is a risk of slipping or
losing your balance.
1 - INTRODUCTION

EN-13 EREBA He
Use only original replacement
parts for any repair or component
replacement. Consult the list of
replacement parts that corresponds
to the specication of the original
equipment.
Do not drain water circuits containing
industrial brines, without informing
the technical service department at
the installation site or a competent
body rst.
Close the entering and leaving water
shut-off valves and purge the unit
hydraulic circuit, before working
on the components installed on the
circuit (screen lter, pump, water
ow switch, etc.).
Periodically inspect all valves,
ttings and pipes of the refrigerant
and hydraulic circuits to ensure that
they do not show any corrosion or
any signs of leaks.
It is recommended to wear ear
defenders, when working near the
unit and the unit is in operation.
Always ensure you are using the
correct refrigerant type before
recharging the unit.
Charging any refrigerant other than
the original charge type (R-410A)
will impair machine operation and
can even lead to a destruction of
the compressors. The compressors
operate with R-410A and are charged
with asyntheticpolyol-ester oil.
Before any intervention on the
refrigerant circuit, the complete
refrigerant charge must be recovered.
1.3 - Preliminary checks
Check equipment received:
●Inspect the unit for damage or missing
parts. If damage is detected, or if shipment
is incomplete, immediately file a claim
with the shipping company.
●Confirm that the unit received is the one
ordered. Compare the name plate data
with the order.
●The name plate is attached to the unit in
two locations:
- on the outside on one of the unit sides
- on the inside.
●The unit name plate must include the
following information:
- Model number - size
- CE marking
- Serial number
- Year of manufacture, pressure and
leaktightness test date
- Fluid being transported
- Refrigerant used
- Refrigerant charge per circuit
- PS: Min./max. allowable pressure
(high and low pressure side)
- TS: Min./max. allowable temperature
(high and low pressure side)
- Unit leak test pressure
- Voltage, frequency, number of phases
- Maximum power input
- Unit net weight
●Confirm that all options ordered for on-site
installation have been delivered, and are
complete and undamaged.
The unit must be checked periodically, if
necessary removing the insulation (thermal,
acoustic), during its whole operating
life to ensure that no shocks (handling
accessories, tools, etc.) have damaged it.
If necessary, the damaged parts must be
repaired or replaced. See also chapter §5.
Maintenance.
1 - INTRODUCTION

EREBA He EN-14
1.4 - Dimensions and clearance for EREBA He units
1.4.1 - Dimensions and location of hydraulic connections
a
b
c
A
B
G
C
D
F
E
H
L
A
B
G
C
D
F
E
H
L
a
b
c
EREBA He A B C D E F G H L masse (kg)
5_1Ph 908 821 326 350 87 356 466 40 60 57
7_1Ph 908 821 326 350 87 356 466 40 60 69
11_1Ph 908 1363 326 350 169 645 744 43 73 115
15_1Ph 908 1363 326 350 169 645 744 43 73 115
11_3Ph 908 1363 326 350 169 645 744 43 73 121
15_3Ph 908 1363 326 350 169 645 744 43 73 121
NOTE : Dimensions are given in mm
1 - INTRODUCTION

EN-15 EREBA He
1.4.2 - Clearances to ensure the correct air flow
The picture presents the minimal distances of the wall to ensure the correct air flow on air
heat exchanger(1).
150
500
1000
1000
150150 300300 300
200
1000
300
200
300
1000
000200510001 200
300
150
200
003051
500
1000 150
(1) Anticipate different maintenance actions before to place the unit (access of different parts / opening of panel/ part replacement…)
1 - INTRODUCTION

EREBA He EN-16
1.5 - Physical data and electrical data of EREBA He units
1.5.1 - Physical data EREBA He
EREBA He 5 (1Ph) 7 (1Ph) 11 (1Ph) 15 (1Ph) 11 (3Ph) 15 (3Ph)
Sound levels
Standard unit
Sound power level (2) dB(A) 64 65 68 69 69 69
Sound pressure level at 10 m (3) dB(A) 33 34 37 38 38 38
Dimensions
Length mm 908 908 908 908 908 908
Width mm 350 350 350 350 350 350
Height mm 821 821 1363 1363 1363 1363
Operating Weight (1)
Standard unit kg 57 69 107 115 121 121
Compressors Rotary compressor 1 1 1 1 1 1
Refrigerant R410A
Charge (1) kg 1,1 1,6 2,8 2,8 3 3
Capacity control
Minimum capacity (5) % 23% 20% 20% 17% 20% 17%
Condenser Grooved copper tubes, aluminium ns
Fans Axial type
Quantity 1 1 2 2 2 2
Maximum total air flow l/s 800 800 1800 1800 1800 1800
Maximum rotational speed rpm 560 660 820 820 820 820
Evaporator Brazed plate heat exchanger
Water volume l 1,7 2,3 4,4 4,4 4,4 4,4
Hydraulic module Circulator, relief valve, paddle ow switch, expansion tank
Circulator Centrifugal pump (variable speed)
Expansion tank volume l 223333
Max. water-side operating pressure with hydraulic module (4) kPa 300 300 300 300 300 300
Water connections
Inlet diameter (BSP GAS) inch 1 1 1 1 1 1
Outlet diameter (BSP GAS) inch 1 1 1 1 1 1
Chassis paint colour Colour code: RAL 7035 RAL 7035 RAL 7035 RAL 7035 RAL 7035 RAL 7035
(1) Values are guidelines only. Refer to the unit nameplate.
(2) In dB ref=10-12 W, (A) weighting. Declared dualnumber noise emission values in accordance with ISO 4871 (with an associated uncertainty of +/-3dB(A)). Measured
in accordance with ISO 9614-1 and certified by Eurovent.
(3) In dB ref 20 μPa, (A) weighting. Declared dualnumber noise emission values in accordance with ISO 4871 (with an associated uncertainty of +/-3dB(A)). For information,
calculated from the sound power level Lw(A).
(4) Min. water-side operating pressure with variable speed hydraulic module is 40 kPa.
(5) Cooling Eurovent condition
1.5.2 - Electrical data EREBA He
EREBA He 5 (1Ph) 7 (1Ph) 11 (1Ph) 15 (1Ph) 11 (3Ph) 15 (3Ph)
Power circuit
Nominal power supply V-ph-Hz 230-1+N-50 230-1+N-50 230-1+N-50 230-1+N-50 400-3+N-50 400-3+N-50
Voltage range V 220-240 220-240 220-240 220-240 380-415 380-415
Control circuit supply 24V AC via internal transformer
Maximum unit power input (Un) (1) kW 1,80 3,38 4,73 5,18 10,32 10,32
Cos Phi unit at maximum power (1) 0,98 0,98 0,98 0,98 0,98 0,98
Maximum unit current drawn (Un-10%) (2) A 8,9 16,7 23,3 25,6 16,8 16,8
Maximum unit current drawn (Un) (3) A 8 15 21 23 15,2 15,2
Maximum Start-up current, standard unit (4) A Not Applicable (less than the operating current)
(1) Power input, compressors and fans, at the unit operating limits (saturated suction temperature 15 °C, saturated condensing temperature 68.3 °C) and nominal voltage
of 400 V (data given on the unit nameplate).
(2) Maximum unit operating current at maximum unit power input and at 360 V.
(3) Maximum unit operating current at maximum unit power input and at 400 V (values given on the unit nameplate).
(4) Maximum instantaneous start-up current at operating limits (maximum operating current of the smallest compressor(s) + fan current + locked rotor current of the
largest compressor).
1 - INTRODUCTION

EN-17 EREBA He
1 - INTRODUCTION
1.5.3 - Inside view
Electrical box 5 - 7 kW unit (1 Ph)
1
11 - 15 kW unit (1 Ph) 11 - 15 kW unit (3 Ph)
1
1
1

EREBA He EN-18
1 - INTRODUCTION
1.6 - Accessories
Accessories Reference Description Advantages Utilisation
Hydraulic tubes 7187601 Tubes are used to decoupling hydraulic circuits
and the units
Reduces vibration transmission to hydraulic
installation EREBA He
Rubber cushion 7447060 Cushion installed under the unit to avoid
vibration trasmission Reduces vibration transmission EREBA He
Floor heating thermal cut off 7274278 Floor heating protection Reduces risk of floor heating dammage EREBA He
Backup heater 5kW 7148641 Electrical backup system
Easy and fast installation, stepped power,
hydraulic securities integrated (water relief
valve, automatic purge)
EREBA He
Backup heater 9kW 7148642 Electrical backup system
Easy and fast installation, stepped power,
hydraulic securities integrated (water relief
valve, automatic purge)
EREBA He
Backup heater for 9 kW for buffer tank
(100L & 200L) 7221389 Electrical backup system Easy and fast installation inside the buffer tank EREBA He
Buffer tank 50L 7328746 Buffer tank available to resolve installions
constraints
Reduce unit cycling increasing reliability, play
the roule of hydraulic separation to improve
the control of water flow rate and water
temperature in the system and finally, increase
thermal inertia during defrost and options mode
operation
EREBA He
Buffer tank 100L 7328744 Buffer tank available to resolve installation
constraints
Reduce unit cycling increasing reliability, play
the roule of hydraulic separation to improve the
control of water flow rate and water temperature
in the system and increase thermal inertia
during defrost and options mode operation
EREBA He
Buffer tank 200L 7328747 Buffer tank available to resolve installation
constraints
Reduce unit cycling increasing reliability, play
the roule of hydraulic separation to improve
the control of water flow rate and water
temperature in the system and finally, increase
thermal inertia during defrost and options mode
operation
EREBA He
Master / Slave sensor 7484985
Unit equipped with supplementary water outlet
temperature sensor kit to be field-installed
allowing master/slave operation of two to four
units connected in parallel
Optimised operation of chillers connected in
parallel with operating time equalisation EREBA He
Domestic hot water tank 300 L 7385910 Tank designed to satisfy sanitary hot water
productions
Easy and fast installation, isolated tank to
reduce heat loss EREBA He
Domestic hot water management
sensor and 3 way valve 7411357
Sensor enabling to manage the water setpoint
inside the tank used for domestic hot water
production
Useful for domestic hot water production EREBA He
"Pool heating management sensor
and 3 way valve" 7111122 Sensor enabling to manage the water setpoint
used for pool heating Useful for pool heating production EREBA He
Pool heating heat exchanger
(ITEX POOL +) 7268480 Essential parts to ensure good working of pool
heating
Titanium exchangers plates, removable, easy
maintenance EREBA He
Remote human interface Standard Remotely installed user interface
Remote heat pump control with room
temperature sensor used to offset the water
control point.
Possibility to configure the unit on field.
EREBA He
Additional outdoor ambient
temperature sensor 7484983 Additional outdoor ambient temperature sensor Better reading of outdoor air temperature EREBA He
Water filling kit 7013876 System enabling to fill the hydraulic circuit Hydraulic circuit easy filling EREBA He
DUO hydraulic module (for floor
heating < 11kW) 3911008
This hydraulic module allows to manage two
differents heat emitters (Ex: floor heating and
radiators)
Easy and fast installation, independant control
integrated EREBA He

EN-19 EREBA He
2 - INSTALLATION OF UNIT
2.1 - General
To install an unit EREBA He the following
steps are requested
1. Place the unit
2. Make hydraulic connections to filling the
system with water or brine fluid
3. Make electrical connections
4. Check for water leaks and the water flow
rate control
5. Finally, make commissioning of the unit
2.2 - Moving and placing the unit
2.2.1 - Moving
See §1.2.1 Installation safety considerations.
Figure 1: Transport configuration
Figure 2: Offloading configuration
2.2.2 - Placing the unit
In case of extra-high units the machine
environment must permit easy access for
maintenance operations.
Always refer to § 1.4. Dimensions and
clearances to conrm that there is
adequate space for all connections and
service operations. For the centre of
gravity coordinates, the position of the unit
mounting holes, and the weight distribution
points, refer to the certied dimensional
drawing supplied with the unit.
Typical applications of these units do not
require earthquake resistance. Earthquake
resistance has not been veried.
Only use slings at the designated
lifting points (refer to Figure 2 to
ofoad the unit).
Before siting the unit check that:
●the permitted loading at the site is
adequateorthatappropriatestrengthening
measures have been taken.
●if the unit has to operate as a heat pump
in temperatures below 0°C it must be
raised at least 300 mm from the ground.
This is necessary to avoid ice build-up
on the unit chassis and also to permit
correct unit operation in locations where
the snow level may reach this height.
●the unit is installed level on an even
surface (maximum tolerance is 5 mm in
both axes).
●there is adequate space above the unit
for air flow and to ensure access to the
components (see dimensional drawings).
●the number of support points is adequate
and that they are in the right places.
●the location is not subject to flooding.
●for outdoor installations, where heavy
snowfall is likely and long periods of
sub-zero temperatures are normal,
provision has to be made to prevent snow
accumulating by raising the unit above
the height of drifts normally experienced.
Baffles may be necessary to deflect
strong winds. They must not restrict air
flow into the unit.

EREBA He EN-20
2 - INSTALLATION OF UNIT
●OAT sensor, located on the coil, should
not be exposed to the sun or other heat
sources.
Before lifting the unit, check that
all casing panels are securely xed
in place. Lift and set down the unit
with great care. Tilting and jarring
can damage the unit and impair unit
operation.
If EREBA He units are hoisted with rigging, it
is advisable to protect coils against crushing
while a unit is being moved. Use struts or a
lifting beam to spread the slings above the
unit. Do not tilt a unit more than 15°.
Never push or lever on any of the
enclosure panels of the unit. Only
the base of the unit frame is designed
to withstand such stresses. If a unit
includes a hydraulic module, the
hydraulic module and pump piping
must be installed in a way that
does not submit it to any strain.
The hydraulic module pipes must
be tted so that the pump does not
support the weight of the pipes.
2.2.3 - Removing the unit panel
To access at the inside of the unit (refrigerant parts / electrical parts), the panel can be
removed. This operation must be carried out by a qualified technician.
Figure 3 : How to remove front panel for 11 & 15 kW units
Figure 4 : How to remove front panel for 5 & 7 kW units