Lindab RHR-CF Instruction manual

Lindab Residential
Heat Recovery
Counterflow Unit
RHR- CF
Quick user guide

Contents
Benefits of MVHR ………………………………………………………………………….. 3
User modes ……………………………………………………………………………….... 4
Inside the unit ……………………………………………………………………………..... 5
General site installation ……………………………………………………………….... 6-8
Unit maintenance ………………………………………………………………………. 9-10
Unit alarms/ faults ………………………………………………….............................… 11
Installation guidelines …………………………………………………….………..… 12-18
2

Benefits of MVHR
3
A Mechanical Ventilation Heat Recovery (MVHR) unit is designed to extract the humid / stale
air from wet rooms in your property-kitchen, WC, bathrooms, utility room etc. The heat from
these rooms is used to heat up the heat exchanger within the unit, which in turn heats up the
incoming supply air from outside and supplying this back to habitable rooms-living room,
bedrooms etc. Providing your property with warm fresh air.
RHR units are equipped with a summer bypass function, for when its beneficial to use the
fresh air for comfort cooling. If the supply air coming in to the property is cooler than the
extracted air the bypass will activate and create a sensation of cooling within the property.

User modes
4
Party Mode
A timed function, active for 3 hours after activation, in which the nominal speed is
increased by 30%. When this function is active on the main screen, the icon will also be
active. The 30% boost is used to offset the increased CO2 and Humidity levels created by
increased occupancy.
Holiday mode
An anti-mould function with the fans at minimum speed. When this function is active on
the main screen, the icon will also be active. To be activated during extended periods of
time away from the property for example when you’re on holiday.
Automatic mode
The fan’s speed is controlled by means of an automatic control cycle taking into account
any ambient change in humidity and CO2. This mode is only available for the Pro version
or for units equipped with an air quality sensor (humidity by default or CO2). The RHR
should be running on this constantly unless specified otherwise. When this function is
active on the main screen, the icon will also be active

Inside the unit
1. RHR-CF-V PRO external structure made from painted
galvanised sheet panels with 25mm thick padding on the
side and30mm thick padding on the front.
2. EPDM fan access closure
3. EPDM filter access closure
4. Electric defrosting pre-heater
5. High efficiency F7 supply, and M5 extract filters
6. Inlet and outlet flow connection
7 & 11. Extract and supply fans. EC motor with overheating
protection of the motor and electronic components. High
efficiency ABS fans with backwards curved blades
8. High efficiency static heat exchanger. PET Counter flow
exchange plates allows the reachable efficiency to be
higher than 90%, No moving parts guarantee high reliability
and safe operation.
9. Main bypass damper
10. Secondary bypass damper
12. T-EP controller
5

General site installation
Positioning the appliance
Position the appliance by hooking it to the
hanging bracket (1)
A. Position the supplied spacer foot (2) to
make sure that the appliance is level
B. Secure the appliance to the wall (3)
C. Mount the condensate drain to the bottom
of the appliance
PLEASE NOTE: The condensate drain is
positioned depending on the configuration of
the unit, please check the handing before
mounting the condensate drain and cap.
The screws are not supplied with the unit. Use
the relevant screws and plugs based on the
type of wall.
6
1
2
3

General site installation
Condensate drain connection
The connection for the condensate drain
is located underneath the appliance.
Connect the condensate drain to the
domestic sewage system using a duct or
pipe (siphoned).
Condensate must be drained from a
minimum height of 100mm.
PLEASE NOTE: If your RHR is right-
handed, the connection shown on the
illustrations must be inverted.
ATTENTION! Make sure that the siphon
of the condensate drain is fully connected
to the domestic sewer system and is
always full of water.
ATTENTION! Make sure that the end of
the siphon is at least 100mm below the
water level
7
Min. 100mm
Floor installation of appliance
The RHR Can be installed using floor
stands accessories.
1. Fix the Fix the stands (1) using the
screws (2) and washers (3) supplied
with the unit feet, at the bottom of
the RHR (4). Fasten the crossbar
(5) to the support (1).
2. Lift the unit and position it vertically
3. Use the spirit level to check the
position of the RHR

General site installation
8
PLEASE NOTE:
•Intake and exhaust ducts MUST be
insulated to atmosphere.
•ALL ducts and distribution boxes in
COLD spaces MUST be insulated – All
ducts in UNHEATED spaces MUST also
be insulated.
•Units fitted with preheater cannot be re-
configured and handing must be
confirmed before order.
LEFT SIDE
CONFIGURATION
OPTIONAL
RIGHT SIDE
CONFIGURATION
OPTIONAL
Intake
Exhaust Supply
Extract
Intake
Exhaust
Supply
Extract
SupplyExhaust ExtractIntake
Airflow Direction Legend:

Unit maintenance
The following maintenance highlighted
in red is recommended to be carried
out by the installer or by qualified
personnel, If you are not qualified to
carry out the following maintenance
you risk damaging the unit or it’s
components:
•Inspect the filters and clean them if
necessary
•Inspect the heat exchanger and
clean it if necessary
•Inspect the fans and clean them if
necessary*
•Check the condensate drain once
every two years*
Now it is possible to switch off the
icon display
•Go to the User Setting menu, press
the ‘M’ button
•Use the touch pad to select the icon
of filter activation
•Press the confirm button
•The timer to change the filters has
been reset .
9
Check the filters
Servicing involving the user is limited to
periodically replacing the filters. The filters
must only be replaced when indicated on the
controller display (icon).
In the meantime it is recommended you check
the filters for debris and dust at the intervals by
following this procedure:
Always disconnect power before accessing the
unit.
A. Open the front panel
B. Remove the caps (A)
C. Extract the filters and replace them (B).
D. Put all the components back in the
opposite order and reconnect power.
PLEASE NOTE: comply with the codes on the
filters and the type of unit connection used
(standard or right side).

Unit maintenance
Check the heat exchanger
Check the heat exchanger once every two years. Always disconnect
power before accessing the unit.
A. Open the front panel
B. Unscrew the front panel and remove it.
C. Pull the band (A) to remove the heat exchanger
ATTENTION! The heat exchanger may contain residual water.
Inspect the condition of the heat exchanger and clean it if necessary:
•Use a soft brush to clean the fins.
•Use a vacuum cleaner or compressor (not high pressure) to remove
filth and dust.
IMPORTANT! Always clean in the opposite direction of the air flow.
•If no more operation is necessary, refit all the components in the
opposite order and reconnect power.
10
A
B
C

Unit alarms
•Alarms can be found on the T-EP
controller, they are silent but will
flash continuously on the controller
screen till they have been
addressed
•Alarms should be reported to the
MVHR servicer as to be
addressed properly this is with the
exception of the filter replacement
alarm, as detailed previously.
•All the details needed to report the
alarm should be indicated on the
controller, or you can identify it
yourself via this table
11

1. Installation of the unit
12
Wall installation
Hanging bracket
DON’T FORGET THE FOOT SPACER
TO LEVEL THE UNIT CORRECTLY!
>20cm for siphon
Floor installation
This base is an accessory
which must be ordered separately
e

2. Left or right side units
13
Left side (standard) Right side
F7 filter
M5 filter
Plug the unused
condensate drain hole
with the provided cap
Exhaust air
Supply air
Siphon
on the LEFT
Electric Pre-heater
Mandatory if outdoor
temperature can go under -10°C
Outdoor air
Extract air Extract air
Supply air Outdoor air
Exhaust air
M5 filter
F7 filter
Siphon
on the RIGHT

2. Left or right side units
MVHR Units without Electric Preheater
•The units are standardly configurated ‘LEFT SIDE’.
•They can be configurated ‘RIGHT SIDE’ by reversing the
position of the F7 and M5 filters. The configuration dip 1 on
the PCB must be switched ON.
MVHR Units with Electric Preheater
•These units cannot be reversed on site and must be directly
ordered LEFT or RIGHT:
•RHR-CF-V XX PRO EL (Left Side) or RHR-CF-V XX PRO
ER (Right Side)
•Check that the positions of the filters and of the configuration
dips were correctly set in the factory:
•Left side: dip 2 and 9 are ON. Others are OFF. F7 filter on the
left and M5 filter on the right.
•Right side: dip 1, 2 and 9 are ON. Others are OFF. F7 filter
on the right and M5 filter on the left.
14

3. Airflows & ducts
15

Electric operations
16
Electric cable:
3*0.5mm2
20m max
Take off
cover
To access
PCB
A. Remote control panel (optional)
-Set or check the setting of dip-switches KD1
(see page 14)
-If connected to BMS, set Modbus address
with dipswitches KD2
The DIP-SWITCHES must be set
when the unit is OFF GRID!
B. PCB
C. Plug power chord

Set the nominal airflow rate, the clock and the day
1. When you start for the first time, the unit runs at the default airflow and it is written TAb on the
screen. To modulate the speed of the fans, the NOMINAL AIRFLOW RATE must firstly be set.
17
2. When the appliance is ON, press the buttons ON/OFF and M at the same
time to access the TECHNICAL MENU. Select INSTALLER MENU and
then select V.
3. Set the Nominal AirFlow Rate (m3/h) with the TOUCH PAD and press ENTER.
4. The control system will then vary the voltage control signal of the fans on the Supply and then
on the Exhaust sides until measuring the correct airflow with the differential pressure
transmitters on the fans. If needed, the airflows on the supply and exhaust sides can slightly be
unbalanced in the parameter menu after this operation.
5. Go back in the TECHNICAL MENU. Select the CLOCK
ICON and set the time and the day of the week
The unit is then completely operational!