AB CA Ostberg 4020528, HERU 14 S AC, HERU 19 S AC, HERU 35 S AC, HERU 52 S AC User Manual
Installation and
directions for use
HERU 14 S AC, HERU 19 S AC
HERU 35 S AC, HERU 52 S AC
UL VERSION
CONTENTS
UNIT DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . .3
INSTALLATION AND SECURITY . . . . . . . . . . . . . .4
”USE” ”SECURITY” ”MOUNTING””WARRANTY” . . . . . .4
”PLACING” ”FREE SPACE”
”SCHEMATIC DIAGRAM FOR PLACING” . . . . . . . . . . . . .5
STARTING UP THE UNIT . . . . . . . . . . . . . . . . . . . .6
CONTROL DIAGRAMS . . . . . . . . . . . . . . . . . . . . .7
REGULATION FUNCTIONS . . . . . . . . . . . . . . . . . .8
OPERATING THE CONTROL UNIT . . . . . . . . . . . .9
VIEW MODES 1-4 . . . . . . . . . . . . . . . . . . . . . . . .10
MAIN MENU . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
”FAN SPEED” MENU . . . . . . . . . . . . . . . . . . . . . .11
”TEMPERATURE” MENU . . . . . . . . . . . . . . . . . . .11
”BOOST” MENU . . . . . . . . . . . . . . . . . . . . . . . . .11
”OVERPRESSURE” MENU . . . . . . . . . . . . . . . . . .12
”WEEK TIMER” MENU . . . . . . . . . . . . . . . . . . . .12
”UNIT ON/OFF” MENU . . . . . . . . . . . . . . . . . . . .13
”ALARMS” MENU . . . . . . . . . . . . . . . . . . . . . . . .13
”SETTINGS” MENU . . . . . . . . . . . . . . . . . . . . . . .14
THE ”SERVICE MENU” . . . . . . . . . . . . . . . . . .14-21
”FILTER MEASUREMENT” ”AC FAN SETUP” . . . . . . . . . .15
”DISPLAY CONTRAST” ”BOOST” ”OVERPRESSURE” . . .16
”ALARM””CO2” . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17
”RH” ”HEATER” ”COOLER” . . . . . . . . . . . . . . . . . . . . .18
”SUPPLY LIMITS” ”REGULATION MODE”
”SUMMER COOLING” . . . . . . . . . . . . . . . . . . . . . . . . . .19
”FREEZE PROTECTION”FLOW DIRECTION”
”LOAD/SAVE SETTINGS” ”VERSION INFO” . . . . . . . . . . .20
”DEVICE PAIRS” . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21
OTHER FUNCTIONS . . . . . . . . . . . . . . . . . . . . . .21
SERVICE HERU S . . . . . . . . . . . . . . . . . . . . . . .22-23
ACCESSORIES . . . . . . . . . . . . . . . . . . . . . . . . . . .24
SPARE PARTS . . . . . . . . . . . . . . . . . . . . . . . . . . .25
ERROR DETECTION DIAGRAM . . . . . . . . . . .26-27
ERROR DETECTION . . . . . . . . . . . . . . . . . . . . . . .28
INTERNAL SETTINGS . . . . . . . . . . . . . . . . . . . . .29
TECHNICAL INFORMATION
DIMENSIONS . . . . . . . . . . . . . . . . . . . . . . . . . . .30
TECHNICAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . .31
SOUND DATA . . . . . . . . . . . . . . . . . . . . . . . .32-33
PRESSURE-FLOW DIAGRAMS . . . . . . . . . . . .34-35
WIRING DIAGRAMS . . . . . . . . . . . . . . . . . . .36-37
This ”Installation and directions for use” contains following products:
HERU 14 S AC, HERU 19 S AC, HERU 35 S AC and HERU 52 S AC.
IMPORTANT! Please read this manual before installing the unit.
HERU 35 S AC
UNIT DESCRIPTION
HERU 52 S AC
HERU 14 S AC
HERU 19 S AC
• HERU S is approved according to the standard
UL 1812 ”Ducted Heat Recovery Ventilators” and
CSA-C22.2 No. 113 ”Fans and Ventilators”.
• HERU S is a heat recovery unit (HRV) or an energy recovery unit (ERV). It is designed for supply
and exhaust air ventilation combined with heat
and cool recovery.
• HERU S can be used in homes, offices, apartments
etc. where there is a need for:
-clean. filtered and fresh air
-high temperature efficiency
-energy saving
-low sound levels
-safe operation
• HERU S;
- has a rotating heat exchanger, of hygroscopic or
non-hygroscopic type and is manufactured of aluminium, placed centrally in the unit. The ERV exchanger has a humidity efficiency of up to 85%.
The HRV exchanger has a temperature efficiency
of up to 85%.
- has backwardcurved centrifugal fans with maintenance free external rotor motors, which are connected with quick contacts, and are easily to
remove for cleaning.
- has built-in control for heating/cooling.
- can be fitted with a built-in electric heater.
- has as standard, disposable bagfilter,
class MERV 13.
- has a wireless remote controller for the operation
and monitoring of the unit.
- has a double skinned galvanised sheet steel casing
with intermediate insulation.
• The HERU S can be mounted in either warm or
cold space.
• The HERU S is delivered galvanized.
• All HERU S are operated via a wireless remote
controller which can operate and to preset the required parameters as well as monitor the unit’s
status. The operating range is approximately 50
meters/164 feet.
The antenna which is placed next to the unit can
have the range reduced if there are heavy reinforcing bars in the concrete structure and it should
then be moved either to a position where the signal is not shielded or nearer to the controller.
WARRANTY
The warranty is only valid under condition that the
HERU S unit is installed, adjusted and has been
record by a qualified person according to this
”Installation and directions for use”, and that regular
maintenance had been made.
NOTE!
Östberg Americas Inc. reserve the right to make
changes without further notice.
3
INSTALLATION AND SECURITY
USE
• When installing HERU consideration must be
given to any approval authority requirements and
recommendations concerning siting, accessibility,
electrical connections, etc.
• The HERU unit is accessible for the user, according to IEC 60335-2-40, to by themselves do the
service and maintenance, according to this
Directions for use. But before this work the unit
must be currentless.
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 metal capabilities, or lack of experience and
knowledge, unless they have been given supervision or instruction concerning use of the appliance
by a person responsible for their safety.”
”Children should be supervised to ensure that they
do not play with the appliance.”
• The HERU unit should be storage in a sheltered
and dry place before installation.
• Dimensioned air flow should not exceed 60% of
the unit's maximum capacity.
• Check at regular intervals that supply air and exhaust air works.
• To avoid condensation in the unit during the cold
season, the unit should not be turned off for a
longer period. When installed in warm moisturre
environment as e.g. bathroom and utilityroom condense may appear on the outside of the unit at low
outside temperatures.
MOUNTING THE HERU S
• HERU S should be installed according to the
assembly instruction, see picture below.
• Place the unit on a high density insulation board,
min. 50 mm.
• Supply and extract air must be duct connected on
the same side of the unit.
• Acoustic silencer should be planned with the help
of sound data and required sound levels.
• Use duct clamp or flange with encompassing insulation when connecting to duct.
• If the supply and the extract air ducts are installed
in a cold space they should be insulated. To prevent condensation the supply air duct should also
be insulated if installed in warm space at low supply air temperatures.
• The fresh air and exhaust air duct should always be
condense insulated.
• The ducts should be insulated all the way towards
the unit.
• The duct sensor GT7 should be mounted in the
supply air duct, and the antenna on a suitably position beside the unit (not against metal).
• If a heating coil is connected a cut off damper must
be mounted in the fresh air duct.
• Cooker hoods must not be connected to the
HERU S.
SECURITY
Attention! Do not apply electric power until after
completion of the installation. Ensure the installation
and wiring is in accordance with CEC, NEC and
local electrical codes..
• Attention, look out for sharp edges and corners on
the HERU unit and fans.
• Consider the weight of the unit. See page 31.
• Before maintenance work the HERU unit must be
currentless. If there is a need of changing or complement any electrical components, it should be
done by a qualified person.
• The HERU unit includes rotating parts that could
cause serious danger on the occasion of contact.
This is why the unit must be duct connected and
the lid closed with the screws tightened, before
starting up the unit.
• After the current is cut for service and maintenance the electric heater may still be warm.
• Make sure that the access cable is not damage at
mounting and installation.
• The HERU S needs a permanent electrical supply.
The unit must be connected via a safety switch.
Any electrical connections must be made by a qualified electrician.
INSULATION BOARD
min. 50 mm
FLOOR
4
PLACING THE HERU S UNIT
A B C D
The HERU S should be installed with the lid upwards (A) or on the side (B). Because of the risk of injury
we do not recommend installing the unit vertically (C) or with the lid downwards (D). Allowances must be
made to access the unit for servicing or maintenance.
CLEARANCEE FOR SERVICING AND MAINTENANCE
mm A+D B C
®
H E R U
50 S 2, 75 S 2, 100 S EC 21
®
H E R U
130 S 2, 130 S EC 2 24 39
H E R U®180 S 2, 180 S EC 2 28 48 24
7/8311/2
16
3/8201/2
Clearance for servicing and maintenance
7/8
SCHEMATIC DIAGRAM FOR HERU S PLACED IN AN ATTIC
5
STARTING UP THE UNIT
Note! Important information before starting!
WARNING!
Improper installation, adjustment, alternation, service or maintenance can cause property damage, personel injury or loss of life.
Installation and service must be performed by a
qualified installer or service agency.
Carefully read through the manual before starting
up the unit.
• Note! Always mount the temperature sensor GT7
in the supply air duct. See page 7 and 36-37. GT7
is connected at the relay card. The temperature
sensor GT7 is placed in the control cabinet when
delivered.
• The antenna should be mounted outside the unit.
The antenna for HERU S is delivered connected,
is placed in the control cabinet.
Note! The antenna should not
any metal area or metal items as this will shield
the signal.
The antenna should be mounted as central as
possible. This to achieve the best signal all over
the house. If neede an extension cord is available
as an accessorie.
be mounted against
age, always check so the unit is starting up again.
• HERU S is supplied for right handing applica-
tion, see picture below. If the unit is installed left
handed, and no electrical heater is fitted, changes
can be made in the ”Service Menu” and in the submenu ”Flow Direction”. See page 20.
• Important when adjusting the flow: Go to Service
Menu (password 1199), choose “AC-motor setup”.
This disable functions such as Summer cooling or
Boost during flow adjustment. The preset fan
speed is standard. See page 11.
When adjusting the airflow of AC-fans there is a
possibility to change the voltage for the different
fan speeds via the separate transformers for supply
resp. exhaust fan. Normal operation should be
done in standard mode. HERU 14 S/19 S has 5step transformers and HERU 35 S/52 S has 7-step.
See wiring diagrams on pages 36-37.
Note! When ajusting fan speed manully, make
sure that the speed keeps the sequences.
• All HERU can be fitted with a built-in electric
heater. Choose heater ”On/Off” according to the
instruction on page 18.
• Install the 3 AA batteries in the wireless control
unit that are placed inside the HERU when delivered.
• HERU S starts automatically (with a few minutes
delay) when the power is switched on, or alternative with the wireless control unit. At power out-
EXHAUST
AIR
FRESH
AIR
• Set the temperature according to the instruction
on page 11.
• Save settings according to the instruction on page 20.
• Note! The unit must not be operating without
filter.
EXTRACT
AIR
SUPPLY
AIR
CONTROL CABINET
6
CONTROL DIAGRAM HERU
®
S
shows all sensors, flow direction right
*Accessories
*
*
*
*
*
*
*
*
*
*
*
*
*
7
REGULATION FUNCTIONS
REGULATE THE TEMPERATURE
The air temperature can be regulated either for constant supply air temperature, constant room temperature or constant exhaust air temperature.
For constant room temperature a sensor should be
placed in the room for room regulation (this is also
suitable when a cooling coil is incorporated in the
system).
Exhaust air regulation functions in a similar way
but with the difference being that the sensor is
placed in the extract air duct.
The temperature can be regulated in 5 sequences:
1.Cooling recovery + After cooling: The regulation
unit can control a cooling coil (e.g. cooling water
from bedrock), when the cooling recovery from
the rotor is not enough.
2.Cooling recovery or regulated fresh air cooling:
The rotary heat exchanger starts if the extract air
temperature is lower than outside temperatur.
Fresh air cooling: The outside temperature is lower
than desired room temperature. The rotor regulate
the supply air temperature.
3.Outside temperature = desired temperature: When
the outside temperature is the same as desired sup-
ply air temperature the rotor stops.
4.Heat recovery: The rotary heat exchanger starts to
recover the warmer room temperature.
5.Heat recovery + heat: In climate conditions where
the rotary heat exchanger, in spite of its high effi-
ciency, is not sufficient to reach the desired supply
air temperature, the controller can regulate either
the built-in electric duct heater or a heating coil.
FAN CAPACITY
Airflow (fan speed) is regulated via the week timer
that can be programmed for specific time points
when the fan speed should change from one speed to
antoher (e.g. home or away setting). A special feature
is that you can pressure compensate when supplementary heating, using an open fire or stove (the
exhaust air fan then drops to a lower speed).
The wireless control unit can also manually adjust
the fan speed and even boost the airflow for an indicated length of time. The fan speed can also be controlled by a carbon dioxide (CO
(RH) sensor so that the unit gives a higher airflow
(boost) when the maximum limit value is reached.
”Summer Cooling” is a function where you can use
the cool outside temperature at night, to cool down
the inside air. The fan speed is boosted when the
ratio between the outside temperature and the
exhaust air temperature is within the programmed
criteria.
Via the wireless control unit the HERU can be put in
an ”Off mode”, which means that the motors for fans
and rotor are ”Off” but the unit is ”Stand by”. If there
is a requirement of totally cut off power, a switch
must be mounted on the mains.
Boosting the airflow for a specified time can be done
via the wireless control, there is also a opportunity to
do that via a timer connected to the ”0” and ”Boost”
connection on the PCB. With the connectors closed
the boost function will be ”On”.
) and humidity
2
Regulated
cooling coil
0-100%
Rotor 100%
1.
Cooling recovery
+
Cooling coil
Regulated rotor
0-100%
2.
Cooling recovery
Regulated rotor
0-100%
4.
Heat recovery
or Fresh air cooling
3.
Outside temperature = Desired temperature
8
Regulated
after heating
0-100%
Rotor 100%
5.
Heat recovery
+
After heat
OPERATING THE CONTROL UNIT
StdStd
SYSTEMSYSTEM OK......
Information of the units current status such as temperature, fan speed, the rotor temperature efficiency when
operating, heat respectively cooling needs is shown in the VIEW MODE 1, 2, 3 and 4. These menus is normally
not lit up for battery-saving purposes but is lit up after the first press of the button and is switched off after
about 2 minutes of not being in use.
The control unit automatically returns to VIEW MODE 1 after one minute when one has viewed other submenus.
Note! At new setting a delay of 15 seconds should be taken into consideration.
Bottom row
shows the possible
choices with key
E.g turn on/off
the unit with the
USER INFORMATION FOR RF DEVICE:
Changes or modifications not expressly approved by the
party responsible for compliance could void the user’s authority to operate the equipment.
This exuipment has been tested and found to comply
with the limits for Class B digital device, pursuant to part
15 of the FCC Rules. These limits are digned to provide
reasonable protection against harmful interference in a
residential installation. This equipment generates, uses and
can radiate radio frequency energy and, if not installed and
used in accordance with the instruction, may cause harmful interference to radio communications. However, there
Top row
and
middle field
displays
current
or .
values
and
activities.
key.
FCC ID: A8W-4020528
This device complies with part 15 of the FCC Rules
and RSS-210 of IC Rules. Operation is subject to
the following two conditions: (1) This device may
not cause harmful interference, and (2) this device
must accept any interference received, including
interference that may cause undesired operation of
the device.
To activate or disable
the keylock;
press down the key
for 3 seconds.
FCC ID: ASW-4020527
This device complies with part 15 of the FCC Rules
and RSS-210 of IC Rules. Operation is subject to
the following two conditions: (1) This device may
not cause harmful interference, and (2) this device
must accept any interference received, including
interference that may cause undesired operation of
the device.
is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful
interference to radio or television reception, which can be
determined by turning the equipment off and on, the user
is encouraged to try to correct the interference by one or
more of the following measures: -Reorient or relocate the
receiving antenna. -Increase the separation between the
equipment and receiver. -Connect the equipment into an
outlet on a circuit different from that to which the receiver is connected. Consult the dealer or an experienced
radio/tv technician for help.
9
CO2
+
CO2
+
...
VIEW MODE 1
+
960
1060
Extract
SYMBOLS THAT CAN BE DISPLAYED IN VIEW MODE 1:
In order to go to
view mode 2, 3
or 4 press
or .
In order to
return to view
mode 1, press .
= Indicates that the rotor is operating.
+
= heat recovery
- = cooling recovery
= Fan speed. Choose from min,
standard, medium, max.
= Symbol indicates that
the heating coil is on.
= Summer cooling is active.
= Week timer is active.
= Function of A-key.
Press A-key to regulate ”boost”
of supply & extract air flow.
= Function of B-key.
Press B-key to turn off
pressure compensation.
VIEW MODE 2
SYMBOLS THAT CAN BE DISPLAYED IN VIEW MODE 2:
In order to go to
view mode 3
or 4 press
or .
In order to
return to view
mode 1, press .
IN VIEW MODE 1 AND 2 BOOST OFF/ON AND AWAY OFF/ON CAN BE CHOOSEN.
Press key to choose Boost off/on of the
supply & extract air flow for a specific time (time
and fan speed settings during the boost
is made in the Service menu ”Boost” page 11).
When the ”plus”
right corner, the boost is activated.
+
symbol is displayed in the
= Indicates that the rotor is operating.
= heat recovery
- = cooling recovery
= Temperature efficiency.
= Symbol indicates that
the heating coil is on.
= Symbol indicates that
the cooling coil is on.
= Week timer is active.
= Summer cooling is active.
= Outside temperature.
= Exhaust air temperature.
= Supply air temperature.
= Extract air temperature.
= CO
compensation is active.
2
= Function of B-key.
Press B-key to choose
”Away” on or off.
= Symbol indicates that
the cooling coil is on.
= Function of keys up and down
for view mode 2, 3 and 4.
= Alarm
= Indicates Boost is active.
= Indicates Away is active.
= Pressure compensation is active.
= Function of A-key.
Press A-key to regulate ”boost”
of supply & extract air flow
= Function of B-key.
Press B-key to turn off
pressure compensation.
= Function of B-key.
Press B-key to choose
”Away” on or off.
= Function of keys up and down
for view mode 1, 3 and 4.
= Alarm
= Indicates Boost is active.
= Indicates Away is active.
= Pressure compensation is active.
= RH compensation is active.
Press key to choose Away off/on.
When the symbol ”suitcase” is
displayed in the right corner, the away
mode is activated, i.e. the fan speed is
minimum.
9
In order to go to
view mode 2
or 4 press
or .
In order to
return to view
mode 1, press .
VIEW MODE 4 (only for HERU®EC)
In order to go to
view mode 2
or 3 press
or .
In order to
return to view
mode 1, press .
VIEW MODE 3
SYMBOLS THAT CAN BE DISPLAYED IN VIEW MODE 3:
= Display weekday and time.
= Indicates that Summer
cooling is active.
= Indicates that week timer
is active.
= Room temperature.
Sensor placed in room.
= Relative air humidity in per cent.
= Carbon dioxide level in PPM
(part per million).
SYMBOLS THAT CAN BE DISPLAYED IN VIEW MODE 4:
Displayes fan speed of supply and extract air in rpm.
At Constant pressure regulation the max speed, the fan speed and current pressure
sensor value is displayed in per cent.
= Supply air temperature
after the rotor.
= Function of keys up and down
for view mode 1, 2 and 4.
= Indicates Boost is active.
= Pressure compensation is active.
compensation is active.
= CO
2
= RH compensation is active..
10
”MAIN MENU”
In order to go forward in the menu from the View mode to the Main Menu press .
In the Main Menu is used to select the desired menu, after the choice is made with .
The procedure is the same in the submenu. In order to return to the previous page press .
”FAN SPEED” MENU (Only for Heru
In this menu desired fan speed is chosen. You can choose from 4 speeds: Min, Standard, Medium and Max.
Normal operation should be done in standard mode
Press in order to go forward from the Main Menu. Press again and then in order to choose
the desired fan speed. Confirm with .
Made settings is overridden if Week Timer is activated.
®
AC)
”TEMPERATURE” MENU
In this menu desired temperature is chosen (supply air, extract air or room temperature) depending on what
kind of regulation that is choosed, see page 19.
Press in order to go forward from the Main Menu. Press again and then in order to choose the
desired temperature (15°C-30°C); .Confirm with .
Made settings is overridden if Week Timer is activated.
”BOOST” MENU
In this menu Boost On/Off is chosen. The time has the factory setting of 30 min. and fan speed Medium.
To adjust the fan speed and time, see page 16.
Boost is activated/disable (On/Off) with the key.
The Boost function can also be activated with an external switch with double pressure or timer.
See wiring diagram page 36-37. The Boost is On as long as the breaker is closed.
11
“OVERPRESSURE” MENU
Off
Overpressure is a special feature were you can pressure compensate when supplementary
heating using an open fire or stove. The extract air fan then drops to a lower speed
during set time.
In this menu Overpressure On/Off is chosen. The time has the factory setting of 15 min.
To adjust the time, see page 16.
Overpressure is activated/disable (On/Off) with the key.
When pressure compensate is
activated the symbol ”Away”
will be change to the symbol
”Overpressure” in View
mode 1 and 2.
Than press directly in the
View mode to turn off Overpressure.
“WEEK TIMER” MENU
When in normal operation the unit runs with the fan speed that was choosen in the “Fan Speed” menu and
the temperature that was choosen in the “Temperature” menu. A departure from these programmed values that
you periodically want to recall is done in this menu. For example if you want to have a lower flow/temperature
during the daytime when nobody is at home then there is the possibility to adjust this here.
Week timer. If end time is the same or less than start time the program will end the following day.
Press in order to go forward from the Main Menu.
Press again and then in order to choose off/on of the week timer. Confirm with .
Press to choose/adjust the desired program. There are 5 programs for the adjustment of the fan speed
and temperature available. Press to choose a program.
Press in order to go forward to choose a weekday, start time, end time, fan speed and temperature.
Use the keys to choose the settings of weekday, start time, and end time, fan speed (Min, Standard,
Medium, Max) and temperature (15°C-30°C).
Cont. next line.
Cont.
Cont. next line.
Cont
N.B! The activated Week Timer is overridden manuel settings of fan speed and temperature.
12
Loading...