Zehnder Rittling ComfoAir 550 Luxe User guide

Cooling Fresh Air Clean AirHeating
ComfoAir 550 Luxe
Installer manual

EN - II
All rights reserved.
This manual has been compiled with the utmost care. The publisher cannot be held liable for any damage caused as a result
of missing or incorrect information in this manual. In case of disputes the Dutch version of these instructions will be binding.

III - EN
Table of Contents
Preface ............................................................................................................................................................. 1
1 INTRODUCTION.............................................................................................................................................. 1
1.1 Warranty and liability.......................................................................................................................... 1
1.1.1 Guarantee conditions ............................................................................................................... 1
1.1.2 Liability...................................................................................................................................... 1
1.2 Safety ................................................................................................................................................... 2
1.2.1 Safety regulations..................................................................................................................... 2
1.2.2 Safety provisions and measures.............................................................................................. 2
1.2.3 Pictograms used....................................................................................................................... 2
2 FOR THE FITTER............................................................................................................................................ 3
2.1 ComfoAir configuration......................................................................................................................3
2.2 Technical specifications..................................................................................................................... 4
2.3 Dimension sketch ............................................................................................................................... 6
2.4 Installation conditions ........................................................................................................................ 7
2.5 Installation of the ComfoAir ............................................................................................................... 7
2.5.1 Transport and unpacking ......................................................................................................... 7
2.5.2 Checking the delivery...............................................................................................................7
2.6 Mounting of the ComfoAir.................................................................................................................. 7
2.6.1 Mounting on the wall................................................................................................................ 7
2.6.2 Connection of the air ducts...................................................................................................... 8
2.6.3 Connection of the condensation drain .............................................................................................8
2.7 Commissioning the ComfoAir ........................................................................................................... 9
2.7.1 CC Ease panel ........................................................................................................................ 10
2.7.2 P menus for the installer ........................................................................................................ 11
2.8 Programming air specifications ...................................................................................................... 16
2.9 Maintenance by the installer............................................................................................................ 17
2.9.1 Inspecting and cleaning the heat exchanger ........................................................................ 17
2.9.2 Inspecting and cleaning the fans........................................................................................... 18
2.9.3 Inspecting and cleaning the pre heater filter ........................................................................ 19
2.10 Malfunctions...................................................................................................................................... 19
2.10.1 Malfunction alerts on the digital operating device ...............................................................19
2.10.2 3-position switch with malfunction indicator ........................................................................ 20
2.10.3 What to do in the event of a malfunction / Troubleshooting ................................................ 21
2.10.4 Malfunctions (or problems) without alerts............................................................................. 33
2.11 Service parts...................................................................................................................................... 34
2.12 Wiring diagram: ComfoAir 550 Luxe – LEFT-HAND version......................................................... 35
2.13 Wiring diagram: ComfoAir 550 Luxe – RIGHT-HAND version....................................................... 36
2.14 EEC declaration of conformity......................................................................................................... 37
2.15 Commissioning & Inspection Record ............................................................................................ 38

EN - IV

1 - EN
Preface
Carefully read this manual before use.
This manual provides all the information required for
safe and optimal installation and maintenance of the
ComfoAir 550 Luxe. It is also intended as a reference
for servicing, so that this can be carried out in a re-
sponsible manner. The device is subject to continu-
ous development and improvement. As a result, the
ComfoAir 550 Luxe may slightly differ from the de-
scriptions.
1 Introduction
The device's name is ComfoAir 550 Luxe. In the fol-
lowing it will be referred to as ComfoAir.
The ComfoAir is a balanced ventilation system with
heat recovery in order to create healthy, balanced
and energy-efficient ventilation in houses. The Com-
foAir has a CE marking on the identification plate.
The identification plate can be found on top of the
ComfoAir.
1.1 Warranty and liability
1.1.1 Guarantee conditions
The ComfoAir is covered by a manufacturer’s war-
ranty for a period of 24 months after fitting up to a
maximum of 30 months after the date of manufac-
ture. Warranty claims may only be submitted for ma-
terial faults and/or construction faults arising during
the warranty period. In the case of a warranty claim,
the ComfoAir must not be dismantled without written
permission from the manufacturer. Spare parts are
only covered by guarantee, if they were supplied by
the manufacturer and have been installed by an ap-
proved installer.
The warranty becomes invalid if:
■The guarantee period has elapsed;
■The device is used without filters;
■Parts are used that have not been supplied by the
manufacturer;
■Non-authorised changes or modifications have
been made to the unit.
1.1.2 Liability
The ComfoAir has been designed and manufactured
for use in balanced ventilation systems incorporating
Zehnder heat recovery systems. Any other applica-
tion is seen as inappropriate use and can result in
damage to the ComfoAir or personal injury, for which
the manufacturer cannot be held liable.
The manufacturer is not liable for any damage origi-
nating from:
■Non-compliance with the safety, operating and
maintenance instructions in this manual;
■The use of components not supplied or recom-
mended by the manufacturer.
Responsibility for the use of such components
lies entirely with the installer;
■Normal wear and tear.

EN - 2
1.2 Safety
1.2.1 Safety regulations
Always comply with safety regulations in this manual.
Non-compliance with the safety regulations, warn-
ings, notes and instructions in this manual can cause
personal injury or damage to the ComfoAir.
■The ComfoAir may only be installed, connected,
rendered operational and maintained by an ap-
propriately approved installer, unless otherwise
indicated in this manual;
■Installation of the ComfoAir must be carried out in
accordance with the general and locally applica-
ble construction, safety and installation instruc-
tions of the local council, electricity and water
boards or other agencies;
■Observe the safety regulations, warnings, com-
ments and instructions as prescribed in this man-
ual at all times;
■Keep this manual with the ComfoAir throughout
its life;
■Instructions with regard to cleaning or replacing
the filters of the intake and exhaust valves must
be carefully observed;
■The specifications stated in this document may
not be changed;
■Modifying the ComfoAir is not allowed;
■The ComfoAir is only suitable for connection to
230V 50Hz mains;
■It is recommended to take out a maintenance
contract so that the device is checked on a regu-
lar basis. The supplier can provide a list of regis-
tered installers nearby.
1.2.2 Safety provisions and measures
■The ComfoAir cannot be opened without using
tools;
■It should not be possible to touch the fans, there-
fore ducting must be connected to the ComfoAir
at a minimum duct length of 900mm.
1.2.3 Pictograms used
The following pictograms are used in this manual:
Point of attention.
Risk of:
- damage to the device;
- performance of the device is compro-
mised if instructions are not observed
carefully.
Risk of personal injury for the user or
installer.

3 - EN
2 For the Fitter
2.1 ComfoAir configuration
The standard ComfoAir configuration consists of:
■External casing (A) of coated sheeting;
■Interior (B) of high-quality, expanded polypropylene EPP;
■4 connections (C) for the air ducts;
■2 plate filters (D) for air purification. Filter classification: outside air G4, return air G4;
■2 energy-efficient DC motors (E) with high-efficient fan;
■HE (High efficient) heat exchanger (F);
■Control circuit board (H) with connections for the fans, the bypass, the Pre heater, temperature sensors (T1 to
T4), the 3-position switch with or without malfunction indicator (optional) and the bathroom switch (optional);
■Connector panel (H) with all the extra connections of the ComfoAir Luxe;
■Removable PCB unit (H2);
■Identification plate (I) detailing information on the ComfoAir (not visible);
■Condensation drain (J) to drain the condensation of the warm return air;
■Sticker (K) detailing the air connections (not visible);
■Cable for power supply (not visible).

EN - 4
2.2 Technical specifications
ComfoAir 550 nL (normal air volumes)
Position Ventilation capacity Power
Absent Setting 50 m3/h at 5 Pa 13 W
Low Setting 150 m3/h at 50 Pa 30 W
Medium Setting 225 m3/h at 100 Pa 69 W
High Setting 330 m3/h at 215 Pa 160 W
Maximum 460 m3/h at 410 Pa 350 W
Position Ventilation capacity Current
Absent Setting 50 m3/h at 5 Pa 0.12 A
Low Setting 150 m3/h at 50 Pa 0.25 A
Medium Setting 225 m3/h at 100 Pa 0.57 A
High Setting 330 m3/h at 215 Pa 1.21 A
Maximum 460 m3/h at 410 Pa 2.46 A
Electricity
Power supply 230/50 V/Hz
Cos.phi 0.46 - 0.62
Supply fan noise level (at 0 m)
Position Ventilation capacity Sound power
Absent Setting 50 m3/h at 5 Pa 36 dB(A)
Low Setting 150 m3/h at 50 Pa 54 dB(A)
Medium Setting 225 m3/h at 100 Pa 63 dB(A)
High Setting 330 m3/h at 215 Pa 71 dB(A)
Maximum 460 m3/h at 410 Pa 79 dB(A)
Exhaust fan noise level (at 0 m)
Position Ventilation capacity Sound power
Absent Setting 50 m3/h at 5 Pa 29 dB(A)
Low Setting 150 m3/h at 50 Pa 39 dB(A)
Medium Setting 225 m3/h at 100 Pa 49 dB(A)
High Setting 330 m3/h at 215 Pa 63 dB(A)
Maximum 460 m3/h at 410 Pa 63 dB(A)

5 - EN
ComfoAir 550 HL (high air volumes)
Position Ventilation capacity Power
Absent Setting 50 m3/h at 5 Pa 13 W
Low Setting 180 m3/h at 60 Pa 41 W
Medium Setting 330 m3/h at 215 Pa 160 W
High Setting 430 m3/h at 360 Pa 310 W
Maximum 460 m3/h at 410 Pa 350 W
Position Ventilation capacity Current
Absent Setting 50 m3/h at 5 Pa 0.12 A
Low Setting 180 m3/h at 60 Pa 0.35 A
Medium Setting 330 m3/h at 215 Pa 1.21 A
High Setting 430 m3/h at 360 Pa 2.22 A
Maximum 460 m3/h at 410 Pa 2.46 A
Electricity
Power supply 230/50 V/Hz
Cos.phi 0.46 - 0.62
Supply fan noise level (at 0 m)
Position Ventilation capacity Sound power
Absent Setting 50 m3/h at 5 Pa 36 dB(A)
Low Setting 180 m3/h at 60 Pa 58 dB(A)
Medium Setting 330 m3/h at 215 Pa 71 dB(A)
High Setting 430 m3/h at 360 Pa 78 dB(A)
Maximum 460 m3/h at 410 Pa 79 dB(A)
Exhaust fan noise level (at 0 m)
Position Ventilation capacity Sound power
Absent Setting 50 m3/h at 5 Pa 29 dB(A)
Low Setting 180 m3/h at 60 Pa 44 dB(A)
Medium Setting 330 m3/h at 215 Pa 55 dB(A)
High Setting 430 m3/h at 360 Pa 63 dB(A)
Maximum 460 m3/h at 410 Pa 63 dB(A)
General Specifications
HE Exchanger Material Polystyrene
Interior Material (E)PP / PA / PA
Thermal Yield 95%
Mass 47 kg

EN - 6
2.3 Dimension sketch
800
724.5
569
280.5 124.5
490
180
200
208.5
208.5
265
ø 32
ELECTRICAL AND DATA CONNECTION
CONDENSATION DRAIN
LEFT-HAND VERSION
CONDENSATION DRAIN
RIGHT-HAND VERSION

7 - EN
2.4 Installation conditions
In order to determine whether the ComfoAir can be
installed in a certain area, the following aspects must
be taken into account:
■The ComfoAir must be installed according to the
general and locally applicable safety and installa-
tion regulations of power and water companies, as
well as the instructions in this manual.
■The system must be fitted to allow sufficient room
around the ComfoAir for the air connections and
supply and exhaust ducts as well as for carrying
out maintenance activities.
■ T he ComfoAir must be installed in a frost-free space.
The condensation must be drained off frost-free, at a
gradient and incorporate a 'U' bend.
We do not recommend installing the Com-
foAir in areas with a higher average humidity
(such as bathroom or toilet). This will prevent
condensation on the outside of the ComfoAir.
■The room must offer the following provisions:
- Air duct connections.
- 230V electrical connection.
- Provisions for the condensation drain.
- Wiring for a wired 3-position switch
(optional).
■The cable used to connect the CC Ease panel or
the CC Luxe panel must have the following speci-
fications:
- Cable type: shielded twisted pair 4x0.34mm2.
- Cable length: 40m maximum.
The connections of the CC Ease panel must
be crossed. (Rx must be connected to Tx).
■A gap should be left near the doors in order to
ensure effective and draughtfree airflow in the
house. A gap under the inside doors must be at
least 10mm.
If these openings are obstructed, due to
draught excluders or deep-pile carpet, the
airflow in the house will stagnate. As a result,
system performance will be compromised or
fail altogether.
2.5 Installation of the ComfoAir
2.5.1 Transport and unpacking
Take the necessary precautions when transporting
and unpacking the ComfoAir.
Make sure the packing material is disposed
of in an environmentally friendly manner.
2.5.2 Checking the delivery
Contact your supplier immediately in case of dam-
age or an incomplete delivery. The delivery should
include:
■ComfoAir;
Check the identification plate to ensure that it is
the required type.
■Mounting bracket;
■Documentation.
The ComfoAir is supplied in the following types:
Type
ComfoAir 550 L Luxe
ComfoAir 550 R Luxe
ComfoAir 550 L Luxe PH
ComfoAir 550 R Luxe PH
Meaning of the suffixes:
* L = Left version
* R = Right version
* PH = Contains a pre heater by default.
* Luxe = Contains a connection board
with extra function by default.
CC Ease panel or CC Luxe panel (optional) can be
ordered separately.
2.6 Mounting of the ComfoAir
2.6.1 Mounting on the wall
Mount the ComfoAir against a wall with a minimum
mass of 200 kg/m2. For other types of wall, we recom-
mend using the Zehnder mounting frame on the floor
(available as an optional extra). This reduces contact
noise as much as possible. The ComfoAir does not
require any space at the sides for effective operation.
Do not mount the side of the ComfoAir
against the wall due to the risk of impact
sound.
1. Fasten the mounting bracket to the wall. Make
sure it is level and at least 1035mm from the floor
(depending on the type of condensation drain se-
lected).
Leave a minimum space of 1m in front of the
ComfoAir for carrying out maintenance.
2. Hang the ComfoAir on the mounting bracket.
3. Mount the condensation drain under the Com-
foAir. The stated dimension of 235 mm is an in-
dication only, and is dependent on the type of
condensation drain selected.

EN - 8
2.6.2 Connection of the air ducts
The following aspects must be taken into account,
while installing the air ducts:
■Install the air exhaust duct so it drains in the di-
rection of the ComfoAir.
■Insulate the outside air supply and the air ex-
haust duct between the roof/wall passage to
render the ComfoAir damp proof. This prevents
the formation of condensation on the outside of
the ducts.
■To prevent unnecessary temperature loss in ei-
ther the summer or the winter, we recommend
fitting thermal and damp-proof insulation to the
supply ducts from the ComfoAir up to the supply
valves.
■Install the air ducts with a minimum ø of 180
mm, as little air resistance as possible and free
from air leakage.
■Install a silencer of at least 1m straight directly
onto the supply and return air connections. For
relevant advice, please contact Zehnder.
■When using flexible channels only Zehnder
channel systems may be used. Any other flexible
channel will disturb the basic operating principle
of the balanced ventilation system.
■ We recommend that the ventilation system is
fitted with intake and exhaust valves made by
Zehnder.
ComfoAir 550 - LEFT
ComfoAir - Right
Return air
Supply air
Exhaust air
Outside air
Outside air
Exhaust air
Supply air
Return air
2.6.3 Connection of the condensation drain
Standard heat exchanger
600
810
1 1/4”
min. 60
min. 60
Ø32
ComfoAir 550 - LEFT
ComfoAir 550 - RIGHT
Warm exhaust air is cooled by the outside air in the
heat exchanger. This causes the moisture in the
indoor air to condense in the heat exchanger. The
condensation water created in the heat exchanger is
fed to a PVC condensation drain.
The connection for the condensation drain has an
external diameter of 32 mm. It is located underneath
the ComfoAir.
■Connect the condensation drain, via a pipe or
hose, to the water seal (U bend) of the domestic
waste-water system.
■Position the upper edge of the water seal at least
40 mm underneath the condensation drain of
the ComfoAir.
■Make sure that the outer end of the pipe or tube
exits is at least 60mm below the water level.
Ensure that the water seal connected to the
domestic waste-water system is always full
of water. This prevents the ComfoAir from
sucking in any leakage air.

9 - EN
Enthalpy heat exchanger
When the ComfoAir is fitted with an enthalpy ex-
changer the moisture from the indoor air is transferred
to the outside air. In this case there is no condensate
which must be drained from the ComfoAir. Therefore
a condensation drain is not necessary when an en-
thalpy exchanger is fitted.
Ensure that the condensation drain is sealed.
This prevents the ComfoAir from sucking in
any leakage air.
The condensation drain can be sealed with a standard
screw-cap.
2.7 Commissioning the ComfoAir
After installation, the ComfoAir must be commis-
sioned.
This can be done via the P menus on the digital op-
erating device. These P menus can be used to enter
various settings (ventilation programmes, in particu-
lar) for the ComfoAir. An overview of the available P
menus is given below:
Menu Options
P1 Reading statuses (from menu P2)
P2 Setting time delays
P3 Setting and reading the ventilation
levels
P4 Setting and reading the temperatu-
res
P5 Setting additional programmes
P6 Setting additional programmes
P7 Reading and resetting malfunctions
(and system information)
P8 Setting the RF input and analogue
inputs (0-10V)
P9 Reading statuses (from menu P5
and P6)
P menus P1, P2 and P9 can be accessed by the user,
mainly to read statuses and set time delays. The re-
maining P menus P3 to P8 are intended solely for the
installer.
The ComfoAir's bypass valve will not work
for the first 4 minutes after a power cut un-
less the programme mode is activated.

EN - 10
2.7.1 CC Ease panel
The ComfoAir Luxe can be operated and commis-
sioned by means of a CC Ease panel, which can
be ordered separately. The CC (Comfort Control)
Ease panel is a digital operating device which can
be mounted on the wall in the living room and from
there communicates with the ComfoAir.
Accessing the P menus
1. Press and hold " " and " " for 2 seconds,
simultaneously.
- Wait until "P 2" appears on the display.
P menus P1, P2 and P9 can now be ac-
cessed.
2. Press and hold " " and " " for 2 seconds,
simultaneously.
- Wait until P menu ”P3" appears on the
display.
P menus P3 to P8 can now be accessed.
3. Select the desired P menu, e.g. " 5 ", using "
" or " ".
4. Press " ".
5. Select the desired P sub-menu, e.g. " 51 ", using
" " or " ".
6. Press " ".
Entering settings in P menus
The minimum and maximum values for the
available settings parameters are preset in
the software.
7. Select a value for the parameter using " " or
" ".
8. Press " " to store the settings.
9. Repeat steps 5 to 8 to set multiple parameters in
succession.
Or
Press " " to return to the P menu so steps 3
to 8 can be repeated.
10. Press " " twice to return to the main screen.
Some P menus (such as P1 and P9) can only
be read.
Leaving Reading menu
■Press " " (instead of " " at step 8)

11 - EN
2.7.2 P menus for the installer
Menus with a line at minimum and maximum value are Reading menus.
Menu P3 Setting ventilation programmes
Ventilation programme values
Submenu Description Minimum Maximum General
Reset
P30 Setting the capacity (in %) of the
exhaust fan in ABSENT POSITION.
0% or 15% 97% nL / HL
15% / 15%
P31 Setting the capacity (in %) of the
exhaust fan in LOW POSITION.
16% 98% nL / HL
35% / 40%
P32 Setting the capacity (in %) of the
exhaust fan in MEDIUM POSITION.
17% 99% nL / HL
50% / 70%
P33 Setting the capacity (in %) of the
exhaust fan to HIGH POSITION.
18% 100% nL / HL
70% / 90%
P34 Setting the capacity (in %) of the
supply fan to ABSENT POSITION.
0% or 15% 97% nL / HL
15% / 15%
P35 Setting the capacity (in %) of the
supply fan in LOW POSITION.
16% 98% nL / HL
35% / 40%
P36 Setting the capacity (in %) of the
supply fan in MEDIUM POSITION.
17% 99% nL / HL
50% / 70%
P37 Setting the capacity (in %) of the
supply fan in HIGH POSITION.
18% 100% nL / HL
70% / 90%
P38 Current capacity (in %) of the
exhaust fan.
- - Current %
P39 Current capacity (in %) of the
supply fan.
- - Current %
Menu P4 Reading the temperatures
Temperature values
Submenu Description Minimum Maximum General
Reset
P40 Current value of Tah
(= Post heater temperature)
- - Current oC
P41 Comfort temperature 12 oC 28 oC 20 oC
P44 n/a - - Current oC
P45 Current value of T1
(= outside air temperature)
- - Current oC
P46 Current value of T2
(= supply air temperature)
- - Current oC
P47 Current value of T3
(= return air temperature)
- - Current oC
P48 Current value of T4
(= exhaust air temperature)
- - Current oC
P49 Current value TGE
(= outside air temperature
for the geothermal heat exchanger)
- - Current oC

EN - 12
Menu P5 Setting additional programmes
Additional programme values
Submenu Description Minimum Maximum General
Reset
P50 Activation of the open fire programme. 0 (= No) 1 (= Yes) 0
P51 Confirming the presence of
a pre heater
0 (= No) 1 (= Yes) 0
Only change if a pre heater is installed afterwards or a general reset is given.
P52 Setting the pre heater programme.
■0; Guaranteed protection.
■1; High protection.
■2; Nominal protection.
■3; Economy.
032
In GUARANTEED PROTECTION MODE the pre heater is switched on soonest; this level offers the best guarantee of
balanced ventilation. Vice versa, in ECONOMY MODE the pre heater switches on at the last possible moment;
balanced ventilation is not guaranteed in this mode.
When commissioning the ComfoAir, the pre heater programme can usually be left at level 2: NOMINAL MODE
(factory setting). In areas with frequent cold spells in winter (frequent periods of -10°C or lower), level 1
should be selected: HIGH PROTECTION or even level 0: GUARANTEED PROTECTION.
P53 n/a 0 (= No) 1 (= Yes) 0
Always keep this setting on Default.
P54 Confirming the presence of a bypass. 0 (= No) 1 (= Yes) 1
The standard ComfoAir configuration includes a bypass. Therefore, leave the value at ‘1’.
P55 Confirming the presence of a post heater.
■0; Post heater not fitted
■1; Post heater fitted
■2; Post heater is fitted and is regulated by a Pulse
Width Modulation (PWM) signal.
0 (= No) 2 (= PWM) 0
P56 Setting the required air volume in the house.
■nL: ”normal air volume”.
■HL: "high air volume".
nL HL HL
Setting the air volume is the starting point for programming the air specifications and setting the fans.
P57 Setting the ComfoAir type.
■Li = ”Left-hand version”.
■Re = ”Right-hand version”.
Li Re Li
With delivery the ComfoAir is correctly pre-programmed at the factory.
After a general reset the pre-programming is lost and the setting must be reset.
The correct setting is mentioned on the identification plate on top of the ComfoAir.
P58 Enter controller priorities.
■0; The highest air setting is leading INCLUDING the sig-
nals from the analogue inputs
■1; The highest air setting is leading EXCLUDING the
signals from the analogue inputs
010

13 - EN
Additional programme values
Submenu Description Minimum Maximum General
Reset
P59 Confirming the presence of an enthalpy exchanger.
■0; Enthalpy exchanger not fitted
■1; Enthalpy exchanger with RH sensor.
■2; Enthalpy exchanger without RH sensor.
0 (= No) 2 (= Yes) 0
Ensure the condensation drain is sealed.
If an enthalpy exchanger without a sensor is selected, then the safety programme will not be
activated and malfunction alerts EA1 & EA2 will never occur.
Menu P6 Setting additional programmes
Additional programme values
Submenu Description Minimum Maximum General
Reset
P60 Confirming the presence of a geothermal heat exchanger.
■0; Geothermal heat exchanger not fitted
■1; Geothermal heat exchanger fitted
■3; Geothermal heat exchanger unregulated.
0 (= No) 3 (= Yes) 0
If a valveless geothermal heat exchanger is fitted, then the unregulated setting must be selected
so that the ComfoAir's bypass valve continues to function properly.
P61 Setting the percentage by which the supply fan must in-
crease its speed when the valve of the geothermal heat ex-
changer is opened.
0% 99% 0%
P62 Tge (Temperature sensor geothermal heat exchanger), low 0 oC 15 oC7
oC
The valve of the geothermal heat exchanger will open if the temperature is below the set temperature.
The valve of the geothermal heat exchanger will close if the temperature is above the set temperature.
The valve of the geothermal heat exchanger will only respond if the ComfoAir is in Wintermode.
P63 Tge (Temperature sensor geothermal heat exchanger), high 10 oC 25 oC 23 oC
The valve of the geothermal heat exchanger will open if the temperature is above the set temperature.
The valve of the geothermal heat exchanger will close if the temperature is below the set temperature.
The valve of the geothermal heat exchanger will only respond if the ComfoAir is in Summermode.
P64 Tah (Temperature sensor post heater), desired 5 oC 40 oC 18 oC
The post heater will switch off when the desired temperature is reached

EN - 14
Menu P7 Reading malfunctions (and system information)
(Malfunction) information values
Submenu Description Minimum Maximum General
Reset
P70 Current software version. Version number of the software (without “v”)
P71 Most recent malfunction. Code in accordance with alarm and malfunction alert
P72 Malfunction before the most recent one Code in accordance with alarm and malfunction alert
P73 Malfunction before the most recent two Code in accordance with alarm and malfunction alert
P74 Resseting malfunction(s)
■Set value to '1' and press “ ” on the
CC-Ease panel.
01
(= activate)
0
P75 General reset.
■Press “ ” on the CC-Ease panel for
at least 5 seconds to carry out a general
reset.
All original software settings are restored
following a general reset.
01
(= activate)
0
After a general reset, the ComfoAir will ask you to reset the “nL / HL” (see P56) and “Li
/ Re” (see P57) settings.
Following a general reset, all settings and programmes need to be checked and set to
the right value.
P76 Self-testing the ComfoAir 0 1
(= activate)
0
• The ComfoAir will run at maximum Rotations Per Minute (RPM).
• The bypass valve will open and close.
• The pre heater valve will open and close after the bypass has closed (If a pre heater is fit-
ted).
P77 Resetting filter dirty counter 0 1
(= activate)
0
This resets the counter that triggers a dirty filter alert on the ComfoAir. This allows the filter to be
cleaned or replaced before the dirty filter alert appears.
Menu P8 Setting the RF input and digital inputs (0-10V)
Analogue input values
Submenu Description Minimum Maximum General Reset
810 Analogue input 1
0= not fitted 1= fitted
0 1 0
811 0= controlling 1= programming (analogue
input 1)
0 1 0
812 set point analogue input 1
(programming)
0 100 50
813 min. setting analogue input 1 0 99 0
814 max. setting analogue input 1 0 100 100
815 0=positive analogue input 1 1=negative set-
ting analogue input 1
0 1 0
816 read-out analogue input 1 0 100 -
820 Analogue input 2
0= not fitted 1= fitted
0 1 0
821 0= controlling 1= programming (analogue
input 2)
0 1 0
822 set point analogue input 2
(programming)
0 100 50
823 min. setting analogue input 2 0 99 0
824 max. setting analogue input 2 0 100 100

15 - EN
Analogue input values
Submenu Description Minimum Maximum General Reset
825 0=positive analogue input 2 1=negative set-
ting analogue input 2
0 1 0
826 read-out analogue input 2 0 100 -
830 Analogue input 3 0= not fitted 1= fitted 0 1 0
831 0= controlling 1= programming (analogue
input 3)
0 1 0
832 set point analogue input 3
(programming)
0 100 50
833 min. setting analogue input 3 0 99 0
834 max. setting analogue input 3 0 100 100
835 0=positive analogue input 3 1=negative set-
ting analogue input 3
0 1 0
836 read-out analogue input 3 0 100 -
840 Analogue input 4
0= not fitted 1= fitted
0 1 0
841 0= controlling 1= programming (analogue
input 4)
0 1 0
842 set point analogue input 4
(programming)
0 100 50
843 min. setting analogue input 4 0 99 0
844 max. setting analogue input 4 0 100 100
845 0=positive analogue input 4 1=negative set-
ting analogue input 4
0 1 0
846 read-out analogue input 4 0 100 -
850 RF input 1 0= not fitted 1= fitted 0 1 0
851 0= controlling 1= programming (RF input 1) 0 1 0
852 set point RF input 1
(programming)
0 100 50
853 min. setting RF input 1 0 99 0
854 max. setting RF input 1 0 100 100
855 0=positive RF input 1 1=negative setting RF
input 1
0 1 0
856 Read-out RF input 0 100 -

EN - 16
2.8 Programming air specifications
After installation, the ComfoAir must be programmed.
This can be done using the air specifications of the
ComfoAir above.
The default settings of the ComfoAir nL are:
Position ABSENT 15%
Position LOW 35%
Position MEDIUM 50%
Position HIGH 70%
The default settings of the ComfoAir HL are:
Position ABSENT 15%
Position LOW 40%
Position MEDIUM 70%
Position HIGH 90%
Follow this procedure to programme the ComfoAir
(after installation):
1. Set the ComfoAir in programming mode.
- Press simultaneously for at least 3 seconds on
"" and " " until “InR” appears on the CC
Ease panel.
In programming mode, the bypass and Pre
heater valves are always closed. After 30
minutes, the ComfoAir automatically termi-
nates the programming mode.
2. Close all windows and outside doors.
3. Close all inside doors.
4. Check the presence of structural overflow provi-
sions.
5. Check if both fans function in the three speed set-
tings.
6. Switch the ComfoAir to high speed.
7. Install all valves and set the valves according to
the settings given or as set in the reference house.
8. Change the fan settings in P menus P30 to P37 of
the digital operating device if required.
Use the chart of the ComfoAir's air specifica-
tions to set the fans.
9. In the event that the currently set air volumes still
deviate too much: Adjust the valves.
10. Check the entire installation again, after all valves
have been set.
11. Switch the ComfoAir (back) to ventilation position
1.
- Press simultaneously for 3 seconds on "
" and " " until “InR” disappears of the CC
Ease panel.
15%
20%
30%
40%
60%
50%
70%
80%
90%
100%
0
20
100
40
300
200
100
0
0
2
Pst
Pa(N/m )
800
700
500
400
200
60
m /h
3
300
l/s80
qv
400
100 120
600
160
600
140
500