OSTBERG HERU 400 Series User manual

Other languages in digital format can be downloaded at www.ostberg.com
HERU®400–1200 S/T
INSTALLATION | EN
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1. Scope of assembly/installation instructions . 5
DESCRIPTION OF UNIT . . . . . . . . . . . . . . . . . . . . . . 5
INSTALLATION AND SAFETY . . . . . . . . . . . . . . . . . . 6
ASSEMBLY/INSTALLATION INSTRUCTIONS . . . . . . . 7
FREE CLEARANCE FOR SERVICE . . . . . . . . . . . . . . . 7
BEFORE STARTING . . . . . . . . . . . . . . . . . . . . . . . . . 8
STARTING. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
2. Important information . . . . . . . . . . . . . . . . . . 9
ABBREVIATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
REFERENCE DOCUMENT. . . . . . . . . . . . . . . . . . . . . 9
3. Flowchart and function descriptions . . . . . . 10
CONTROL DIAGRAM . . . . . . . . . . . . . . . . . . . . . . 10
TEMPERATURE REGULATION . . . . . . . . . . . . . . . . 11
4. Control system function description . . . . . . 12
CONTROL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
4.1 Operating times . . . . . . . . . . . . . . . . . . . 12
4.2 Timer/Boost . . . . . . . . . . . . . . . . . . . . . . 12
4.3 Circulation pumps . . . . . . . . . . . . . . . . . 12
4.4 Cooling down the electric heater . . . . . . 12
4.5 Rotary heat exchanger . . . . . . . . . . . . . . 12
REGULATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
4.6 Temperature regulation . . . . . . . . . . . . . 12
4.7 Extract air regulation . . . . . . . . . . . . . . . 12
4.8 Outside compensated temp. regulation . 13
4.9 Fan compensation . . . . . . . . . . . . . . . . . 13
4.10 Support operation . . . . . . . . . . . . . . . . 13
4.11 Night cooling . . . . . . . . . . . . . . . . . . . . 13
PROTECTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
4.12 Freeze protection . . . . . . . . . . . . . . . . . 13
4.13 Rotary heat exchanger . . . . . . . . . . . . . 13
4.14 EHC . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
4.15 Efficiency extract air measurement . . . . 14
4.16 Fire/smoke . . . . . . . . . . . . . . . . . . . . . . 14
ALARMS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
4.17 Multifunctional input . . . . . . . . . . . . . . 14
5. Password handling . . . . . . . . . . . . . . . . . . . . 15
6. Control unit HMI-TM . . . . . . . . . . . . . . . . . . . 16
FUNCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
6.1 LCD . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
6.2 Up -S, Down -Tand ENTER - √. . . . . . 16
6.3 Info - i. . . . . . . . . . . . . . . . . . . . . . . . . 16
6.4 Info - i -LED display . . . . . . . . . . . . . . . . 17
6.5 Alarm - . . . . . . . . . . . . . . . . . . . . . . . 17
6.6 Alarm - -LED display . . . . . . . . . . . . . . 18
6.7 ESC - . . . . . . . . . . . . . . . . . . . . . . . . . . 18
CONNECTING HMI . . . . . . . . . . . . . . . . . . . . . . . . 18
SCREEN LAYOUT . . . . . . . . . . . . . . . . . . . . . . . . . 19
6.8 Screen . . . . . . . . . . . . . . . . . . . . . . . . . . 19
6.9 Navigation rows . . . . . . . . . . . . . . . . . . . 19
6.10 Display row . . . . . . . . . . . . . . . . . . . . . 19
6.11 Preferences row . . . . . . . . . . . . . . . . . . 19
DISCRETE PARAMETER SETTINGS . . . . . . . . . . . . . 20
6.12 When only one value is selectable . . . . 20
6.13 When several values are selectable. . . . 20
ANALOGUE PARAMETER SETTINGS . . . . . . . . . . . 20
7. Getting started, a few simple steps. . . . . . . 21
LOG IN WITH PASSWORD. . . . . . . . . . . . . . . . . . . 21
7.1 To log in. . . . . . . . . . . . . . . . . . . . . . . . . 21
DATE AND TIME SETTINGS . . . . . . . . . . . . . . . . . . 21
7.2 Date and time are used for . . . . . . . . . . 21
7.3 Changing date and time . . . . . . . . . . . . 21
LANGUAGE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
7.4 Changing language . . . . . . . . . . . . . . . . 22
ALARM HANDLING. . . . . . . . . . . . . . . . . . . . . . . . 22
7.5 Resetting alarms. . . . . . . . . . . . . . . . . . . 22
CHANGING SETPOINTS. . . . . . . . . . . . . . . . . . . . . 23
7.6 Temperature setpoint . . . . . . . . . . . . . . . 23
7.7 Fan setpoint . . . . . . . . . . . . . . . . . . . . . . 23
MANUAL CONTROL OF HERU®CX . . . . . . . . . . . . 24
7.8 Stopping the unit for service . . . . . . . . . 24
7.9 Manual start. . . . . . . . . . . . . . . . . . . . . . 24
TIME SWITCH PROGRAM . . . . . . . . . . . . . . . . . . . 25
7.10 Default programming. . . . . . . . . . . . . . 25
7.11 Week schedule. . . . . . . . . . . . . . . . . . . 25
7.12 Programming the month’s times . . . . . 25
7.13 Copy the month’s times . . . . . . . . . . . . 26
EXAMPLES OF THE TIME SWITCH PROGRAM . . . . 26
7.14 Operation past midnight . . . . . . . . . . . 26
7.15 Operation at different speeds. . . . . . . . 26
8. Connection of mains voltage . . . . . . . . . . . . 27
CONSUMPTION AND OUTPUTS . . . . . . . . . . . . . . 27
ENGLISH
CONTENTS
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9. External components basic unit . . . . . . . . . . 28
GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
SENSORS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
9.1 Temperature sensors . . . . . . . . . . . . . . . 29
9.2 Internal temp. sensor . . . . . . . . . . . . . . . 29
9.3 Supply air temperature sensor . . . . . . . . 29
9.4 Room temperature sensor . . . . . . . . . . . 30
9.5 Outside temperature sensor . . . . . . . . . . 31
DAMPER MOTORS . . . . . . . . . . . . . . . . . . . . . . . . 32
9.6 Connection of spring-return motor . . . . 32
9.7 Connection On/Off motor . . . . . . . . . . . 32
SHUNT GROUP . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
9.8 Connection of actuator
and circulation pumps . . . . . . . . . . . . . . 33
9.9 Heating . . . . . . . . . . . . . . . . . . . . . . . . . 33
9.10 Cooling . . . . . . . . . . . . . . . . . . . . . . . . 34
9.11 Freeze protection . . . . . . . . . . . . . . . . . 34
9.12 Water heating external,
not integrated in HERU®CX . . . . . . . . . 34
9.13 Electric heater, EH . . . . . . . . . . . . . . . . 35
9.14 External electric heater
not integrated in HERU®CX . . . . . . . . . 35
9.15 Filter monitors . . . . . . . . . . . . . . . . . . . 36
9.16 Filter monitor with display . . . . . . . . . . 36
9.17 Cooling unit . . . . . . . . . . . . . . . . . . . . . 37
9.18 Combi coil, DX cooler and heat pump . 37
9.19 Configuration when integrated heater
is a water coil . . . . . . . . . . . . . . . . . . . 38
9.20 Configuration when integrated heater
is electric . . . . . . . . . . . . . . . . . . . . . . . 38
CONTROL INPUTS TIMER ETC. . . . . . . . . . . . . . . . 39
9.21 Timer control, Siemens KOP5 . . . . . . . . 39
9.22 Timer TM1, prolonged operation . . . . . 39
9.23 Timer TM1, boost operation. . . . . . . . . 39
9.24 Presence detector................. 40
9.25 External control from BMS,
multiple speeds .................. 40
9.26 Quick stopp ..................... 41
INDICATIONS FOR EXTERNAL SIGNALS ......... 42
9.27 Operation indication............... 42
9.28 Alarm indication.................. 42
9.29 AUX operation indication ........... 42
9.30 Room unit 2-wire ................. 43
9.31 External HMI-DM (IP31) ............ 44
10. Modbus pressure sensor
for pressure regulation................ 45
10.1 Designations and measuring ranges
of the pressure sensors ............. 45
PRESSURE SENSOR QBM68.................. 45
10.2 Settings and connections ........... 45
10.3 Assembly ....................... 45
10.4 Pressure regulation,
addressing of pressure sensor ........ 46
11. Miscellaneous. . . . . . . . . . . . . . . . . . . . . . . . 47
ROTARY HEAT EXCHANGER CONTROL UNIT . . . . 47
11.1 Stepping motor Varimax. . . . . . . . . . . . 47
TIME SWITCH PROGRAM . . . . . . . . . . . . . . . . . . . 48
11.2 General . . . . . . . . . . . . . . . . . . . . . . . . 48
11.3 Week schedule. . . . . . . . . . . . . . . . . . . 48
11.4 Day schedule . . . . . . . . . . . . . . . . . . . . 48
11.5 Calendar (exceptions and stops) . . . . . 49
11.6 Configuration. . . . . . . . . . . . . . . . . . . . 50
COMMUNICATION . . . . . . . . . . . . . . . . . . . . . . . . 51
11.7 General . . . . . . . . . . . . . . . . . . . . . . . . 51
11.8 MODBUS . . . . . . . . . . . . . . . . . . . . . . . 52
11.9 Initiation of internal MODBUS interface 52
CHECKING IO CONFIGURATION . . . . . . . . . . . . . . 53
11.10 Unconfigured IO’s . . . . . . . . . . . . . . . 53
11.11 Double configured IO’s. . . . . . . . . . . . 53
11.12 HERU®CX I/O configuration . . . . . . . . 55
11.13 HERU®address list Modbus master . . 55
PROGRAM VERSIONS . . . . . . . . . . . . . . . . . . . . . . 56
11.14 BSP and application in the controller . 56
11.15 BSP in HMI . . . . . . . . . . . . . . . . . . . . . 56
ALARM HANDLING. . . . . . . . . . . . . . . . . . . . . . . . 56
11.16 General . . . . . . . . . . . . . . . . . . . . . . . 56
11.17 Principles . . . . . . . . . . . . . . . . . . . . . . 56
11.18 Alarm button function . . . . . . . . . . . . 57
11.19 Procedure for non-saving alarms . . . . 57
11.20 Procedure for saving alarms . . . . . . . 57
11.21 Alarm list information. . . . . . . . . . . . . 58
MENU STRUCTURE . . . . . . . . . . . . . . . . . . . . . . . . 58
11.22 Menu overview . . . . . . . . . . . . . . . . . 58
11.23 Start page > Main index > Unit . . . . . 59
11.24 Start page > Main index >
System overview. . . . . . . . . . . . . . . . . 60
11.25 Start page > Main index >
Configuration. . . . . . . . . . . . . . . . . . . 60
12. Service HERU®. . . . . . . . . . . . . . . . . . . . . . . 61
13.1 Service interval . . . . . . . . . . . . . . . . . . . 61
13.2 Service . . . . . . . . . . . . . . . . . . . . . . . . . 61
13.3 Damper . . . . . . . . . . . . . . . . . . . . . . . . 61
13.4 Cooling coil . . . . . . . . . . . . . . . . . . . . . 62
13.5 Electric heater . . . . . . . . . . . . . . . . . . . 63
13.6 Fans . . . . . . . . . . . . . . . . . . . . . . . . . . . 64
13.7 Filter. . . . . . . . . . . . . . . . . . . . . . . . . . . 65
13.8 Rotary heat exchanger . . . . . . . . . . . . . 66
13.9 Heating coil . . . . . . . . . . . . . . . . . . . . . 67
13. Accessories . . . . . . . . . . . . . . . . . . . . . . . . . 68
options. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68
14. Spare parts list . . . . . . . . . . . . . . . . . . . . . . . 68
15. Troubleshooting . . . . . . . . . . . . . . . . . . . . . 69
ENGLISH
CONTENTS
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4
GARANTI
Warranty period valid according to purchase con-
tract calculated from date of purchase. Unless other-
wise agreed, the usual warranty period is two (2)
years in accordance with NL01, amendment VU03.
SCOPE OF WARRANTY
The warranty covers faults occurring during the war-
ranty period which are reported to the retailer, or
which have been confirmed by H. Östberg AB (the
warrantor) or the warrantor’s representative, and
which concern design, manufacturing or material
faults and consequential faults that have occurred on
the product itself. The above-mentioned faults will
be rectified so that the product is made operational.
GENERAL WARRANTY LIMITATIONS
The warrantor’s responsibility is limited in accor-
dance with these warranty terms and the warranty
does not cover property damage or personal injury.
Verbal promises made in addition to this warranty
agreement are not binding for the warrantor.
WARRANTY LIMITATIONS
This warranty applies on condition that the product
is used in a normal fashion or under comparable
circumstances for its intended purpose and that the
instructions for use are followed.
This warranty does not cover faults caused by:
– Transport of the product.
– Careless use or overstraining of the product.
– Failure on the part of the user to follow instruc-
tions concerning installation, use, maintenance,
care and handling.
– Incorrect installation or incorrect positioning of
the product.
– Conditions that are not due to the warrantor,
e.g. excessive voltage variations, lightning, fire
and other accidents.
– Repair, maintenance or design changes made by
an unauthorized party.
– Faults that do not impact operation, e.g. surface
scratches.
– Parts that through handling or normal wear are
exposed to greater than average hazard, e.g.
lamps, glass, ceramic, paper and plastic parts, and
filters and fuses are not covered by the warranty.
– Settings; information on use, care, handling,
service or cleaning that are customarily described
in the instructions for use; or works caused by the
user neglecting to observe warning or installation
instructions; or investigation of such are not cove-
red by the warranty.
– The warrantor is only responsible for the function
if approved accessories are used.
– The warranty does not cover product faults cau-
sed by accessories/equipment from another
manufacturer.
Deviations from the unit’s factory settings must be
documented in the enclosed delivery/commissioning
report (see tab 4) to avoid costs for faults, if any. The
warrantor is not liable for costs such as adjustment
costs related to the replacement of fans and control
boards in the unit.
SERVICE TERMS DURING THE WARRANTY PERIOD
In cases where service partners are used, the custo-
mer will not be charged for work, replaced parts,
necessary transports or travel costs for repairs cove-
red by the warranty..
This, however, requires that:
– The warrantor and the service partner agree in
advance on appropriate measures.
– The unit is installed and adjusted according to
relevant instructions.
– The defective parts are handed over to the service
partner for forwarding to the warrantor.
– Repairs starting and work is carried out during
normal working hours. For urgent repairs or
repairs conducted outside normal working hours,
the service partner is entitled to charge for extra
costs. However, if the fault may pose a health
risk or cause substantial economic damage, the
fault will be repaired immediately at no extra
charge.
– Service vehicles or public modes of transport run-
ning on a set timetable may be used (public
modes of transport here do not include boats,
aircraft or snow vehicles).
RECTIFICATION MEASURES WHEN
A FAULT IS DETECTED
When a fault is detected, the customer must notify
this to the retailer. Specify the product it concerns.
The part number and date of manufacture (year and
week) is given on the product label. Describe the
fault as accurately as possible and describe how the
fault occurred. For a warranty repair to be perfor-
med, the customer must prove that the warranty is
valid by presenting the receipt of purchase. After the
warranty period has expired, warranty claims that
have not been made in writing before the expiration
of the warranty period will not be valid. The current
terms of sale at H. Östberg AB otherwise apply.
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1. Scope of assembly/installation instructions
DESCRIPTION OF UNIT
The HERU®400–1200 T/S energy recovery unit is designed for supply air and exhaust
air ventilation with cooling and heat recovery. The unit is equipped with plug fans with
maintenance-free EC motors and integrated heating function via water or electricity.
A large number of optional accessories are available for the unit, such as U pipes,
shunts, dampers, silencers, cooling coil, etc.
The unit panels are made of double sheet steel with 50 mm thick mineral wool insula-
tion.
HERU®400 T/S, 600 T/S, 800 S and 1200 S have a steel design with minimized ther-
mal bridges. HERU®800 T and 1200 T have an aluminium frame and hatch design.
• HERU®can be used in environments with stringent demands for:
– high temperature efficiency
– low energy consumption
– low sound level
– high operating reliability
• HERU®
– is equipped with a non-hygroscopic, aluminium rotary heat exchanger located in
the centre of the unit. The heat exchanger has a temperature efficiency rate of up
to 86%.
– is designed for simple installation, maintenance and cleaning.
– is supplied with the Siemens Climatix control system as standard. The unit is
also available without a control system.
– can be equipped with an integrated electric heater.
– is supplied with an incinerable bag filter ePM1 65% as standard.
– is equipped with wired control unit for operation and monitoring.
– can handle Modbus communication via RS485 and TCP IP.
– is supplied with integrated web server.
• HERU®is suitable for placement in both warm and cold areas.
HERU®400 T EC
HERU®600 T EC
HERU®800 T EC
HERU®1200 T EC
HERU®400 S EC
HERU®600 S EC
HERU®800 S EC
HERU®1200 S EC
5
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6
INSTALLATION AND SAFETY
USE
• For an optimal indoor climate and to avoid moisture damage in the property,
there must be continuous and adequate air exchange. The unit must be run-
ning continuously and only stopped for service.
The airflow is controlled via various settings on the control panel:
- Reduced – Reduced airflow, can be used when no one is in the property.
-Normal – This is set by the installer and should not be changed by the user.
-Boost – Higher airflow than normal, medium/max can be selected. This
should be used when the load on the property is higher than what the
standard mode is set for, e.g. when there are more people than normal in
the property.
• When installing HERU®, follow applicable regulatory requirements and
recommendations concerning location, access, duct insulation, etc.
• The user may, in accordance with IEC 60335-2-40, independently perform
the service and maintenance on HERU®that is described in this user manual.
However, the unit must be disconnected from any power supply before all
such work. With reservation according to IEC 60335-2-7.12 ”This appliance is
not intended for use by persons (including children) with reduced physical,
sensory or mental capabilities, or lack of experience and knowledge, unless
they have been given supervision or instruction concerning use of the appli-
ance by a person responsible for their safety. Children should be supervised to
ensure that they do not play with the appliance.”
• HERU®should be kept in a sheltered and dry environment during storage
before installation.
• Dimensioned airflow should not exceed 75% of the unit’s maximum capacity.
• Check regularly to ensure that supply air and extract air are functioning
properly.
• To avoid condensation in the unit in cold weather, the unit should not be
turned off for a prolonged period of time. If the unit is installed during cold
weather and not operated immediately, the ducts should be plugged to pre-
vent condensation.
SAFETY
• Maintenance and operation of the unit may only be performed by personnel
who have the requisite knowledge concerning maintenance of the ventilation
unit and who have read this manual.
• Consider the weight of the unit when installing. See technical specification for
weight data.
• Bear in mind that HERU®and the fan housing may have sharp corners and
edges.
• Before commissioning, make sure there are no foreign objects inside the unit
which could cause serious injury or damage to the unit.
• Always follow the electrical safety regulations concerning free clearance for
control cabinets and electric heaters.
• Make sure that the unit is always locked and that the keys are stored in a
location that is not accessible to unauthorized persons.
• Do not open the service doors while the unit is in operation. Overpressure
from the fans could cause the doors to swing open.
• The unit should be fitted with a locking safety switch placed nearby.
• Turn off the unit via the control panel and wait two (2) minutes before
opening the service doors
• The safety switches must be switched off and locked before starting any
service work.
• Do not use the safety switches for normal start and stop of the unit.
• Electrical installation, electrical and mechanical work and work inside the unit
and its peripheral equipment may only be performed by certified electricians
or personnel designated by H. Östberg AB.
• Note that the surfaces of the unit may be cold in winter conditions.
• HERU®contains rotating parts that could cause serious injury in the event
of contact. The unit must therefore be connected to a duct, the doors closed
and locked and the key removed.
• The heating coil in the unit could cause burns. The heating coil may still be
hot after the voltage has been switched off for service, maintenance and repair
work (approx. 60°C).
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7
ASSEMBLY AND INSTALLATION INSTRUCTIONS
The HERU®T/S-units must stand even and stable. Note and take into account the
unit’s weight.
When lifting the unit, always use a pallet jack or truck with forks with a minimum
length as the width of the unit.
1. Make sure the unit is level using a spirit level.
- If the floor is uneven use the adjustable feet.
- Use the underlying Novibra mat to reduce vibrations against the floor joists.
2. Connect the ducts. Note! Make sure to connect the supply/extract/exhaust/fresh
air connections to the corresponding duct.
Use duct clamp or flange with encompassing insulation when connecting to
duct.
3. The ducts should be insulated all the way towards the unit casing.
- The supply and the extract air ducts should be insulated if installed in
a cold space.
- To prevent condensation the supply air duct should also be insulated if
installed in warm space.
- The fresh air and exhaust air ducts should always be condense insulated.
4. If a heating coil is connected a damper motor with spring return must be
mounted in the fresh air duct.
5. Connect the electrical cables according to wiring diagrams, see chapter 2
”Reference document”.
6. The duct sensor GT1 should always be installed in the supply air duct and
connected to the unit. See chapter 9 ”Supply air temperature sensor”.
7. Ensure there is space enough in front of and above the unit according to the
recommended service clearance, see below.
8. The cooling coil must always lean slightly towards the drainage connection to
avoid the risk of stagnant water.
9. Locking safety switches should be placed near the unit (not supplied by
H. Östberg AB).
HERU®400 and 600 T/S are delivered in one part.
HERU®800 and 1200 T/S are delivered in two parts.
Screw the unit together using the fixed internal
corner joints (rear) and the corner post angles (front).
Use the duct connection to reach the corner at
the far end.
Note!
CLEARANCE FOR SERVICE AND MAINTENANCE
HERU®T HERU®S
500 mm 500 mm
1200 mm
1200 mm
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8
STARTING
Carefully read the operating instructions before starting up the unit.
HERU®starts automatically (with a few minutes delay) when the power is switched
on. In the event of a power failure, always check so the unit is starting up again.
Never run the unit without the filters!
• Ensure that HERU®is installed correctly.
• Make sure that all ducts, water pipes and electrical connections are correctly assembled.
• Make sure no objects or dirt are left behind in the unit during construction, as this
could lead to injury and/or damage to the unit.
• Ensure that the service doors are closed and locked.
• Make sure that the connection cable has not been damaged during assembly and
installation.
BEFORE STARTING
Note!
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9
2. Important information
The menu information in the control unit/HMI is describe for each individual function.
Because of this, the information in the example menu screenshots may not be consis-
tent with the information provided in the HMI of each individual HERU®CX unit.
Sometimes all information rows are described, when in reality only a limited number of
menu rows will be visible. The reason for this is that, to simplify handling for the user,
non-selected functions and settings are “turned off” at configuration.
If any information is not provided in the display, that function or input is probably not
configured/enabled. See chapter 11.6 for more information
This manual describes general functions and components that are directly connected
to the HERU® CX unit.
The software may include functions and concepts related to moisture, humidification
and/or dehumidification. All such information has been omitted in this document.
H. Östberg AB does not accept any responsibility for these functions, as it is not our
intention to treat air using humidification or dehumidification.
The software is continuously developed and improved, therefore H. Östberg AB is not
to be held accountable for any discrepancies that may appear in this document, and
also reserves the right to modify data and design.
ABBREVIATIONS
Förkortning Förklaring
BMS....................................................................................... Building Management System (parent control system)
BSP ......................................................................................................................Board Support Package (firmware)
EXP1 ....................................................................... Expansion module no. 1, module for multiple outlets and inlets
EHC............................................................................................................................. Electrical Heater (heating coil)
HERU®S CX .................................................................................. Side connected HERU®unit with Climatix control
HERU®T CX ...................................................................................Top connected HERU®unit with Climatix control
HERU®CX ...................................................................HERU® unit with Climatix control (data applies to both S & T)
HMI .......................................................................................................... Human Machine Interface (control panel)
LED .................................................................................................. Light Emitting Diode (light diode for indication)
NC........................................................................................................... Normally Closed (opening switch at signal)
NO .............................................................................................................. Normally Open (closing switch at signal)
OEM ..................................................................................................................... Original Equipment Manufacturer
PROC1 ............................................................................................................. Processing unit 1 (Climatix base unit)
REFERENCE DOCUMENT
Dokumenttitel Art.no.
Wiring diagram HERU®400-600 T/S ................................................................................................... 999500003
Wiring diagram HERU®800-1200 T/S ................................................................................................. 999500002
Climatix Room unit POL822.60 (2-wire interface) ............................................................................... 999720001
Climatix Basic documentation............................................................................................................ 999720005
Climatix Modbus Guide & reference list ........................................................................................... 999720006
Climatix LON-Guide............................................................................................................................. 999720007
Climatix BACnet-/IP-Guide & tag list ................................................................................................. 999720008
Climatix OPC Guide & tag List............................................................................................................ 999720009
Climatix AWM Advanced Web Module Guide ................................................................................. 999720010
Climatix Modbus Pressure Sensor QBM68........................................................................................ 999720014
The referenced documentation is digital and available at www.ostbergs.com
Important!
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10
3. Flowchart and function descriptions
The flowchart and function descriptions describes most of the functions the controller
can handle. Regarding to the unit configuration, all functions may not be available in
the supplied model. Some can be selected in the HMI and are described as Optional
in the HMI. Other functions do not have the external components required for selec-
tion.
If you have any questions about a specific function, please contact your nearest
H. Östberg AB sales office for assistance. The controller supplier constantly works
with product development and we reserve the right to continuously improve our pro-
duct. As such, there may be new functions in the software version this unit is equipped
with, even if this function is not described in the function description.
CONTROL DIAGRAM HERU®CX
The unit comes as standard with: Filter, fans, heat exchanger, heating coil/electric heater, EMS, EMS RV,
GT1, GT2, GT3, GT42 and GT8/GT9.
Other components are optional.
ID Description
GT1 Temp.sensor, supply air
GT2 Temp.sensor, extract air
GT3 Temp.sensor, outside air
GT42 Temp.sensor, exhaust air
GT8 Freeze protection sensor
GT9 Overtemp. sensor
GTR Temp.sensor, room air
GTU Outside temp.sensor
GP1 Pressure switch, supply air
GP2 Pressure switch, extract air
GP3 Flow detector, supply air
GP4 Flow detector, extract air
GP5 (Pressure switch/flow detector) EHC
GF1 Supply air flow
GF2 Extract air flow
ST1 Actuator supply/outside air
ST2 Actuator extract/exhaust air
ID Description
EMS Speed control rotary heat exchanger
EMS-M Drive motor EMS
EMS-RV Rotation monitor EMS
CP1 Circulation pump heating
CP2 Circulation pump cooling
SV1 Valve actuator heating
SV2 Valve actuator cooling
DX-C DX-cooling 1…3 stage
DX-CHP Direct expansion cooling and
heating pump (or water)
GQ1 CO2-sensor, room or extract air
GM1 Humidity sensor, room or extract air
GN1 Presence detector
TM1 Timer OT/Boost
TU1 Setpoint impact room pot.
RU1 Room unit
TF-EC Supply air fan, EC motor
FF-EC Extract air fan, EC motor
Important!
ID Description
1 HERU®unit
2 Room
3 Rotary heat exchanger
4Filter
5Electrical heater
6 Heating coil
7 Cooling coil
Incl. in the basic version
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11
TEMPERATURE REGULATION
3.
Outside temperature = Desired temperature
1.
Cooling recovery
+
cool down
2.
Cooling recovery
or cool down
4.
Heat recovery
5.
Heat recovery
+
heating
Regulated
cool down 0-100% Regulated
heating 0-100%
Rotor 100% Regulated rotor
0-100% Rotor 100%
Regulated
rotor 0-100%
The temperature can be regulated as constant supply air regulation or room
regulation/extract air regulation.
• When constant supply air regulation, the air supply temperature remains constant.
• When room regulation, a sensor is placed in the room to obtain a constant room
temperature (suitable when a cooling coil is installed).
• Extract air regulation works in a similar way, but with the difference that
the temperature is measured on the unit’s extract air side.
THE TEMPERATURE CAN BE REGULATED IN 5 STAGES:
1. Cooling recovery + cooling:
The control unit can regulate a cooling coil (e.g. cooling water from geothermal
heating), when the cooling recovery from the rotor is insufficient.
2. Cooling recovery and/or regulated cool down:
The rotary heat exchanger starts if the extract air temperature is lower than
the outside temperature.
- Regulated cool down: If the temperature outside is lower than the desired
room temperature and is not sufficient for lowering the room temperature,
the cool down will start.
3. Outside temperature = desired temperature:
When the outside temperature is the same as the desired supply air tempera-
ture, the rotor will stop.
4. Heat recovery:
The rotary heat exchanger starts to recover the warmer indoor temperature.
5. Heat recovery + heating:
In climate zones in which the rotary heat exchanger, in spite of its high effici-
ency, is insufficient to achieve the desired supply air temperature, the control
unit can also regulate either an electric heater or a heating coil connected to
the duct.
”Night cooling” is a function which utilizes the cool outdoor temperature and cools
down the building at night without using any other additional energy. The fan speed is
boosted when the ratio between the outside and the extract air temperature is within
the programmed criteria.
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12
4. Control system function description
CONTROL
OPERATING TIMES
The unit is controlled via a built-in timing channel.
At start-up, the dampers ST1/ST2 opens and efter inställd tid startar, , and according
to a set time the extract air fan (FF) starts and then heat recovery (EMS) is control-
led to maximum recovery if the outside temperature is under the adjustable set value
[15°C]. The supply air fan (TF) then starts after an adjustable time delay, and a nor-
mal regulation starts.
When the unit is stopped, the fans will stop and then the dampers ST1/ST2 will close
according to the set time, with control voltage or spring return.
TIMER/BOOST
The unit is controlled to the set fan stage for prolonged operation or boost during the
set time via push button TM1, push button timer (time in timer) or pulse-controlled
push button (spring return with adjustable time in PROC1).
CIRCULATION PUMPS
Circulation pump heating CP1 goperates automatically when heating is required or at
outside temperature below the minimum setting (adjustable in HMI. Exercised once a
week.
Cirkulationspump, cooling CP2 går enligt automatik vid kylbehov. The pump is
blocked if outside temperature is below the minimum setting in HMI. Exercised once
a week.
COOLING DOWN WHEN ELECTRIC HEATING
If electric heating is configured and operation is stopped, the supply air fan will switch
to prolonged operation to cool down the electric heater. ST1 and ST2 remains open
during cool down.
ROTARY HEAT EXCHANGER
Time controlled blow-off when the unit is stopped or when heating is not required.
The control is integrated in EMS.
REGULATION
TEMPERATURE REGULATION
The supply air temperature is regulated via GT1.
At increased heating requirement, temperature is regulated according to following
sequence:
1. Cooling valve SV2 is closing, or cooling unit KM1 reducing the output.
2. Heat exchanger EMS increases the heat recovery, if GT2 > GT3.
3. Heating valve SV1 opens for heating, or electric heater EHC increasing the output.
At reduced heating/increased cooling requirement, the above sequence is reversed.
Models with DX cooling and heating pumps and integrated heating:
1. The cooling and heating pump CHP reducing the cooling effect.
2. Heat exchanger EMS increases heat recovery, if GT2 > GT3.
3. The cooling and heating pump CHP increasing the heating effect.
4. Heating valve SV1 opens for heating, or electric heater EHC increasing the output.
At reduced heating/increased cooling requirement, the above sequence is reversed.
EXTRACT AIR REGULATION (cascade control)
Can be selected in HMI. Temperature sensor GT2 becomes main sensor and tempera-
ture sensor GT1 becomes sensor for supply air limit according to set value inHMI.
Cascade control in combination with supply air regulation [Extract air SuWi].
Selectable in HMI; switching between extract air and supply air regulation according
to outside temperature or annual calendar, or digital input (summer/winter change-
over).
4.1
4.2
4.3
4.4
4.5
4.6
4.7
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Different setpoints apply for cascade control and supply air regulation.
If room sensor GTR is used, room regulation in combination with supply air regulation
is also selectable [Room SuWi].
OUTSIDE COMPENSATED TEMPERATURE REGULATION
Selected in HMI. Temperature is shifted via 4 breakpoints, according to adjustable
value, from [start point] till [end point] according to [ΔK] for summer/winter.
FAN COMPENSATION (boost/ reduction)
Selected in HMI. Possible to fan compensate via outside temperature, room tempera-
ture GTR, air quality GQ1 and humidity GM1. The different fan compensations will
be added to the total fan compensation value.
Temperature exercise:
Is used for support heating and/or cooling or night cooling when there is no room tem-
perature sensor.
Temperature exercise ramps/starts up the unit after an extended period of inactivity
(switched off) and updates the extract air temperature duct sensor.
SUPPORT OPERATION
Selected in HMI. Heating, cooling or heating and cooling is selectable.
Temperature regulation support heating when unit is stopped (night time), as follows:
1. Heat exchanger
2. Heating coil in sequence according to specified order.
Support cooling with cooling coil.
NIGHT COOLING (summer night cooling)
Selected in HMI. Night cooling starts automatically to cool premises at night with cool
fresh air.
Heat exchanger, heating and cooling coil are blocked during night cooling.
Conditions for automatic start:
– Time switch program must be in OFF mode.
– Outside temperature is higher than min. outside temperature.
– Outside temperature is lower than the difference between the room/extract air
temperature.
– (minus) Δ [1K].
– Room/extract air temperature is higher than room/extract air setpoint.
Night cooling is cancelled if the Timer input is enabled, or if the above conditions
cease during operation.
13
PROTECTION
FREEZE PROTECTION
At low return temperature GT8 in the heating coil, the heating valve SV1 will be
overridden (open more than the heating requirement demands), according to set
value in HMI. If the temperature continues to decrease, an alarm will go off and the
unit will stop. When the unit stops, the coil will maintain heat according to set value.
Freeze protection sensor is reset in HMI.
HEAT EXCHANGER
Rotation monitor RV1 monitors the rotation of the rotary heat exchanger, EMS alarm
goes to HMI. EMS has an integrated motor protection. In the event of over-current, an
alarm is sent from the heat exchanger to HMI. The alarm is reset in EMS (by unplug-
ging main voltage/external switch disconnector) and in HMI. Alarm class is selectable
in HMI.
EHC
GT9 consists of an alarm for low temperature (aut. return) and high temperature
(man. return). If the GT9 alarm is triggered, EHC will be blocked and cool down will
begin. The electric heating alarm can be reset in HMI. If the high temperature protec-
tion also is triggered, GT9 must also be reset on the EHC electric heater.
GP5 monitors minimum supply air flow/pressure. If pressure falls below the set value,
EHC is blocked and the alarm will not be triggered.
4.8
4.9
4.10
4.11
4.12
4.13
4.14
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4.15
4.16
4.17
4.18
4.19
4.20
4.21
14
OPTIONS via add on module EXP-1 (9050054)
The following features are optional and are not included in the basic version supp-
lied from H. Östberg AB.
Besides the respective sensor, an EXP1 is also required to obtain multiple I/Os
(inputs/outputs).
PRESSURE REGULATION
Duct pressure regulation, designed to be combined with VAV systems. The fans are
controlled to maintain a pre-set pressure (setpoint), via GP1 and GP2, in each duct
system.
FLOW REGULATION
Flow regulation is designed to be used in systems where a constant flow is desired. The
fans are controlled to maintain a pre-set flow (setpoint), e.g. compensate for increased
filter clogging via GF1 and GF2.
PRESSURE REGULATION WITH FLOW MEASUREMENT
This function can also be combined with one fan operating as MASTER/duct pressure
regulation and the other fan as SLAVE/flow regulated.
MASTER-/SLAV regulation requires GP1/GP2, GF1 and GF2.
FAN COMPENSATION
Fan compensation can be obtained via air quality/humidity sensor GQ1/GM1 (duct or
room model). The fan can be boosted to a higher flow at higher PPM/RH.
ALARMS
• Deviation alarm: GT1, GT2, GT3, GP1, GP2, GP3, GP4, GF1 and GF2
• Recovery alarm (rotor control EMS)
• Fan alarm
• Freeze protection sensor GT8/Overheating electric heater GT9
• Low efficiency
MULTIFUNCTIONAL INPUT
The following functions are located at the same signal input and cannot be combined:
– Control input 1: Timer input for additional speeds.
– Control input 2: Additional speeds from BMS.
– Quick stop input
– Common filter alarm: Active via pressure sensor, supplied as optional accessory.
EFFICIENCY MEASUREMENT EXTRACT AIR
Temperature efficiency is calculated via temperature sensors GT2, GT42 and GT3,
provided that the heat exchanger signal is 100%.
Alarm is triggered if efficiency falls below the set value.
FIRE/SMOKE
When a signal is received from the parent fire/smoke system, the fire/smoke alarm will
not be triggered.
In the event of alarm, the following functions can be selected:
• The unit is stopped and the damper closes.
• Extract fan speeds up to the fire setpoint and supply fan is stopped.
Dampers ST1/ST2 remains open.
• Supply fan speeds up to the fire setpoint and extract fan is stopped.
Dampers ST1/ST2 remains open.
• Supply + extract fan speed up to the fire setpoint. Dampers ST1/ST2 remains
open.
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4.22
4.23
4.24
15
5. Password handling
Password protection can be set for up to 9 levels. Only 3 levels are defined in this
application.
The following actions are possible at the different levels:
• Without password:
– Read access to all menus except system parameters,
configuration and detailed menus.
– Read access to alarm lists and alarm history.
• Password 1000/”User” level 6:
– The same rights as for “without password” plus:
– Read access to all menus except configuration menus.
– Write access to the main setpoints.
– –Alarm and alarm history can be acknowledged and reset.
• Password 2000/“Service” level 4:
– The same rights as for “User”, plus:
– Rights for all menus and system settings.
If password 2000 must be used, the utmost caution should prevail!
There is a high risk that a change may damage basic settings/configurations.
PUMP MONITORING
Monitoring is done using current relay and feedback to PROC1. If the pump does not
draw current when the pump is in operation, an alarm is triggered and heat maintenan-
ce of the freeze protection sensor will take over.
Monitoring is possible for both CP1 and CP2.
DIRECT EXPANSION COOLING UNIT
Can control 1-STAGE (On/Off)/ 2-STAGE stage-connected (50/50 stage)./ 3-STAGE
binary (1/3-2/3 stage).
Alarm from direct expansion cooling or operation indication from direct expansion
(DX) cooling.
SU/WI-SWITCH
Summer/Winter switch. can switch between summer/winter from BMS system or via
supply pipe thermostat at COMBI COI.
Caution!
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16
FUNCTIONS
6. Control unit HMI-TM
Control display/HMI-TM, IP65 [POL871.71/STD] ....................Art.no 994020643
GENERAL
HMI-TM is a separate control unit. The backside has a magnetic area for accurate pla-
cement on the HERU®CX casing.
The connection cable has a semi-spiral design, i.e. the 50% closest to the HMI-TM is
spiral and the rest is astraight cable.
The temperature operating range is –40...+60°C.
1
2
3
4
5
6
7
HMI-TM
LCD
1. LCD display, blue or white background lighting (adjustable),
resolution 240x148.
Viewing of menus, parameters, parameter values, etc.
UPS, DOWNTAND ENTER√
2. 3. 4. Buttons for menu navigation.
• Maneuver with:
– Pos. 2: UPS
– Pos. 3: DOWNT
– Pos. 4: Select with ENTER √,
• Change the parameter values:
– Open the value you would like to change by pressing ENTER √.
– Increase or decrease the value with UPS/ DOWNT
– Acknowledge/confirm the changed value by pressing ENTER √ again.
• Move to the lower levels by pressing ENTER √.
If a higher password level is required, a ”shortcut” to the password handling/login/
logout menu is possible, by pressing ENTER √for about 3 seconds.
Once the password is keyed, you automatically return to the previous menu location.
INFO- i
5. Shortcut button to the main index and start page.
• Go to main index.
• Switch between main index and start page.
6.1
6.2
6.3
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17
INFO- i- LED DISPLAY
5. The LED display may indicate the following:
• Not lit
– The unit is not in operation
• Green/flashing
– Start up
– Night operation test
– Night cooling
– Support operation
• Green/steady light
– Normal operation
• Orange/steady
– Quick stop enabled (designated in the HMI as Emergency stop)
• Orange/flashing
– Fire damper exercise (not available on HERU®CX)
• Alternating Green/Orange
– Operation OFF (see Menu: Startpage ÆManuell operation)
– Operation in Manual mode (see Menu: Startpage ÆManuell operation)
ƑEcon. St1
  Ƒ Comf. St1
  Ƒ Econ. St2
  Ƒ Comf. St2
  Ƒ Econ. St3
  Ƒ Comf. St3
To return to time switch program mode, choose Auto.
– Room unit overrides settings in HMI
– Manual control of any output or value.
Can mean that one or more outputs or values/signals in the HMI are set as manual
values. In this mode the outputs, parameter values and signals are not controlled auto-
matically.
When any of the signals or values are set in manual mode, the utmost caution must
prevail.
All use of manual control of signals or values is at your own risk.
When resetting manual control of signals or values, the parameter must always be
reset to ZERO (ZERO stands for automatic mode).
All parameters are set to Auto (Zero) through:
Main menu ÆConfiguration ÆSet IO to, choose Auto.
ALARM 
6. Alarm handling buttom.
• Go to Alarm list
– If an alarm is triggered:ÆAlarm list, shows triggered alarms
– If no alarm is triggered: ÆAlarm history
• Go to the latest triggered alarm in the Alarm list
– Possibility to acknowledge/reset triggered alarm
• Go to Alarm entry
– Alarm list sorting
  Ƒ Name
  Ƒ Time
  Ƒ Prio
  Ƒ Status
– Alarm history sorting
  Ƒ Name
  Ƒ Time
  Ƒ Prio
  Ƒ Status
Alarm handling is also listed under:
Main index ÆAlarm handling ÆAlarm reset:
For more information about Alarm handling, see chapter 7.5 and 12.18.
Important!
6.4
6.5
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18
CONNECTING HMI
When needed, it is possible to extend the cable up to 15 m.
The connector is a modular RJ45, for connection in the Basic regulator.
See image below (PROC1/T-HI).
The simplest way to extend the cable is to use a 15 m CAT5 cable and a splice block.
Type: female-female RJ45. (should be X marked).
ALARM -LED DISPLAY
6. The LED display may indicate the following:
• No lit LED
– No alarm.
• Red/flashing LED
– One or more alarms are triggered.
• Red/steady LED
– Tried to acknowledge the alarm, but not reset.
ESC
7. ESC button:
• Returns one level in the menu.
• Cancels any changes made.
• Go to the main page in HMI: Press ESC for about 3 seconds.
For more info about Alarm, see chapter 12.16.
6.6
6.7
PROC1 / T-HI
Tip!
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SCREEN
a. Current authority level:
• No symbol: No authority level.
• 1st key: authority level 6.
• 2nd key: authority level 4.
• 3rd key: authority level 2.
b. Title of displayed page.
c. 7: The number of the marked row. 16: Total number of rows at the page
(incl. this row).
d. The page includes additional rows above; press the up arrow to display.
e. The page includes additional rows below; press the down arrow to display.
f. The navigation arrow shows that there is sub level under this level.
g. Highlighted row.
NAVIGATION ROWS
On the navigation rows, the option is shown with dark text on a light-coloured
background when it is highlighted.
In front of the navigation arrow, the current value for the option is shown.
• Go to the row to be highlighted: Press the arrow UPSor DOWNT.
• Go to the sub level with the navigation arrow X: Press ENTER √.
DISPLAY ROW
The option is shown with a dark background even when viewed in read-only mode.
Current value of the option is shown. The navigation arrow is not shown in read-only
mode (non-authorized level).
PREFERENCES ROW
The parameter name and the current value are shown with a dark background.
Setting of value:
• Go to the row to be highlighted: Press the arrow UPSor DOWNT.
The highlighted row is shown with a dark text.
•
• Switch to preferences page: Press ENTER √.
• Set the parameter value: Press the arrow UPSor DOWNT.
• Close the preferences page and apply the changed parameter value: Press ENTER √.
• Close the preferences page without applying the changed parameter value:
Press ESC .
offOperating state
off Ź
Extract fan
ȳ

Ÿ
ź
я
Extract fan off Ź
Actual fan step off Ź
Fire mode off
Fire setpoint 80%
Disable high speed -20.0°C
Disable fan comp None
Summer comp 0.0 %
7/16
Fan control
Disable fan comp None
bd
a
f
g
c
Ÿ
ź
e
19
SCREEN LAYOUT
6.8
6.9
6.10
6.11
offNight cooling
offNight cooling
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off
¥heating
heating cooling
cooling
20
WHEN ONE VALUE IS SELECTABLE ONLY
The set value is shown on the row preceded by a check mark (here “Heating”).
To change the value:
• Choose a new value: Press the arrow UPSor DOWNT.
• Switch to editable mode: Press ENTER √.
• Set the parameter value: Press the arrow UPSor DOWNT.
• Close editing mode and apply the changed parameter value: Press ENTER √.
• Close the preferences page without applying the changed parameter value:
Press ESC .
WHEN SEVERAL VALUES ARE SELECTABLE
The set value is shown on the row preceded by a check mark.
To change the value:
• Choose a new value: Press the arrow UPSor DOWNT.
• Select or deselect a value: Press ENTER √.
• Apply the new value(s):
– Go to Done (at the bottom of the menu): Press the arrow UPS
or DOWNT.
– Choose Done: Press ENTER √.
or
• Keep the old value and close the preferences page: Press ESC .
The scale above shows the minimum and maximum values that can be set.
Changing set values:
• Change the value below the arrow: Press the arrow UPSor DOWNT.
• Increase the value in increments of 10, 100 or 1000:
Press the arrow UPSfor some time. After a moment, the value will increase
by increments of 10, then by increments of 100, and so on.
• To slow the rate of the increased from 1000s to 100s to 10s to 1s:
Do not press the arrow UPSor DOWNTfor at least a second. The cursor
will then move from 1000Æ100, after another second, from 100Æ10,
10 Æ1 and so on.
• Keep the new value and close the preferences page: Press ENTER √.
or
• Keep the old value and close the preferences page: Press ESC .
0 љ5000
1117
DISCRETE PARAMETER SETTINGS
6.12
6.13
ANALOGUE PARAMETER SETTINGS
enblLowLimit
¥enblOffNormal
selfRelease
¥typeAlarm
¥evtOffNormal
enblFault
1270466_utg3_HERU_400_1200_eng.indd 20 2020-10-28 11:59:41
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