Zehnder Rittling ComfoAir 550 Luxe User guide

ComfoAir 550 Luxe
Installer Manual
Cooling Fresh Air Clean AirHeating

EN - II
All rights reserved.
This manual has been compiled with the most 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 dis putes the Dutch version of these instructions will be binding.

III - EN
Table of Contents
TABLE OF CONTENTS .............................................................................................................................................. III
Preface................................................................................................................................................... 1
1 INTRODUCTION................................................................................................................................................. 1
1.1 Warranty and liability ................................................................................................................................1
1.1.1 Warranty 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 INSTALLER ......................................................................................................................................... 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 .......................................................................................................... 7
2.6.3 Connection of the condensation drain ....................................................................................................8
2.7 Commissioning the ComfoAir................................................................................................................... 9
2.7.1 P menus for the user ................................................................................................................. 10
2.7.2 P menus for the installer............................................................................................................. 11
2.8 Programming air specifications............................................................................................................... 15
2.9 Maintenance by the installer................................................................................................................... 16
2.9.1 Inspecting and cleaning the heat exchanger................................................................................ 16
2.9.2 Inspecting and cleaning the fans ................................................................................................ 17
2.10 Malfunctions ......................................................................................................................................... 17
2.10.1 Malfunction alerts on the digital operating device......................................................................... 17
2.10.2 What to do in the event of a malfunction / Trouble shooting ......................................................... 18
2.10.3 Malfunctions (or problems) without alerts..................................................................................... 26
2.11 Service parts......................................................................................................................................... 27
2.12 Wiring diagram: ComfoAir 550 Luxe – LEFT-HAND version...................................................................... 28
2.13 Wiring diagram: ComfoAir 550 Luxe – RIGHT-HAND version ................................................................... 29
2.14 UL Listing Declaration............................................................................................................................30
2.15 Temperature conversion table ............................................................................................................... 30

EN - 1
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.
NOTE
This manual has been compiled with
the most care. However, no rights can be
derived from it. In addition, we at all times
reserve the right to change the contents of
this manual, without prior notice.
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 UL marking on the identification plate. The
identification plate can be found on top of the Com-
foAir.
1.1 Warranty and liability
1.1.1 Warranty 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 warranty 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”. Any other
use is deemed unintended use and can lead to dam-
age 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.

2 - EN
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;
■ Always take ESD-inhibiting measures when deal-
ing with electronics, such as wearing an antistatic
wristband. The electronics can be damaged by
static charges;
■ The ComfoAir is only suitable for connetion to
230V 50Hz or 240V 60Hz mains. Use 15A circuit
breaker or fuse in supply circuit. Class 3 wiring is
required to be used, in accordance with Article
725 of the National Electrical Code, if the wiring
extends into areas where wet contact is likely;
■ For residential installation only;
■ Do not install in a cooking area or connect direct-
ly to any appliance. Recommended maximum
ambient temperature is 122°F (50°C );
■ It is recommended to take out a maintenance
contract so that the device is checked on a regu-
lar basis.
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 35 inch (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 to the user or
installer.
The ComfoAir identification plate is shown below:









 










 








EN - 3
2 For the Installer
2.1 ComfoAir configuration
The standard ComfoAir configuration consists of:
■ External casing (A) of coated sheeting;
■ Interior (B) of high-quality, expanded polypropylene (E)PP;
■ 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 (with optional moisture exchanger) (F);
■ Display (G) to read data and for setting procedures;
■ Electronics compartment (H) for connecting external switches and controllers;
■ Removable PCB unit (H2);
■ Identification plate (I) detailing information on the ComfoAir (not visible);
■ Condensation drain connector (J);
■ Sticker (K) detailing air connections;
■ Cable for power supply with 240V ground connection plug (L).

4 - EN
2.2 Technical specifications
ComfoAir 550 Luxe (nL setting)
Position Ventilation capacity Power
Absent Setting 29.43 CFM (50 m3/h) at 0.02 in.w.c. (5 Pa) 13 W
Low Setting 88.29 CFM (150 m3/h) at 0.20 in.w.c. (50 Pa) 30 W
Medium Setting 132.43 CFM (225 m3/h) at 0.40 in.w.c. (100 Pa) 69 W
High Setting 194.23 CFM (330 m3/h) at 0.86 in.w.c. (215 Pa) 160 W
Maximum 270.75 CFM (460 m3/h) at 1.65 in.w.c. (410 Pa) 350 W
Position Ventilation capacity Current
Absent Setting 29.43 CFM (50 m3/h) at 0.02 in.w.c. (5 Pa) 0.12 A
Low Setting 88.29 CFM (150 m3/h) at 0.20 in.w.c. (50 Pa) 0.25 A
Medium Setting 132.43 CFM (225 m3/h) at 0.40 in.w.c. (100 Pa) 0.57 A
High Setting 194.23 CFM (330 m3/h) at 0.86 in.w.c. (215 Pa) 1.21 A
Maximum 270.75 CFM (460 m3/h) at 1.65 in.w.c. (410 Pa) 2.46 A
Electricity
Power supply 230 / 50-60 V/Hz
Cos.phi at Maximum 0.8
Connecting Power 1.70 kW
Maximum Power Pre-heater 1.35 kW
Leakage current <1mA
Supply fan noise level (at 0 m)
Position Ventilation capacity Sound power
Absent Setting 29.43 CFM (50 m3/h) at 0.02 in.w.c. (5 Pa) 36 dB(A)
Low Setting 88.29 CFM (150 m3/h) at 0.20 in.w.c. (50 Pa) 54 dB(A)
Medium Setting 132.43 CFM (225 m3/h) at 0.40 in.w.c. (100 Pa) 63 dB(A)
High Setting 194.23 CFM (330 m3/h) at 0.86 in.w.c. (215 Pa) 71 dB(A)
Maximum 270.75 CFM (460 m3/h) at 1.65 in.w.c. (410 Pa) 79 dB(A)
Exhaust fan noise level (at 0 m)
Position Ventilation capacity Sound power
Absent Setting 29.43 CFM (50 m3/h) at 0.02 in.w.c. (5 Pa) 29 dB(A)
Low Setting 88.29 CFM (150 m3/h) at 0.20 in.w.c. (50 Pa) 39 dB(A)
Medium Setting 132.43 CFM (225 m3/h) at 0.40 in.w.c. (100 Pa) 49 dB(A)
High Setting 194.23 CFM (330 m3/h) at 0.86 in.w.c. (215 Pa) 63 dB(A)
Maximum 270.75 CFM (460 m3/h) at 1.65 in.w.c. (410 Pa) 63 dB(A)

EN - 5
ComfoAir 550 Luxe (HL setting)
Position Ventilation capacity Power
Absent Setting 29.43 CFM (50 m3/h) at 0.02 in.w.c. (5 Pa) 13 W
Low Setting 105.94 CFM (180 m3/h) at 0.24 in.w.c. (60 Pa) 41 W
Medium Setting 194.23 CFM (330 m3/h) at 0.86 in.w.c. (215 Pa) 160 W
High Setting 253.09 CFM (430 m3/h) at 1.45 in.w.c. (360 Pa) 310 W
Maximum 270.75 CFM (460 m3/h) at 1.65 in.w.c. (410 Pa) 350 W
Position Ventilation capacity Current
Absent Setting 29.43 CFM (50 m3/h) at 0.02 in.w.c. (5 Pa) 0.12 A
Low Setting 105.94 CFM (180 m3/h) at 0.24 in.w.c. (60 Pa) 0.35 A
Medium Setting 194.23 CFM (330 m3/h) at 0.86 in.w.c. (215 Pa) 1.21 A
High Setting 253.09 CFM (430 m3/h) at 1.45 in.w.c. (360 Pa) 2.22 A
Maximum 270.75 CFM (460 m3/h) at 1.65 in.w.c. (410 Pa) 2.46 A
Electricity
Power supply 230 / 50-60 V/Hz
Cos.phi at Maximum 0.8
Connecting Power 1.70 kW
Maximum Power Pre-heater 1.35 kW
Leakage current <1mA
Supply fan noise level (at 0 m)
Position Ventilation capacity Sound power
Absent Setting 29.43 CFM (50 m3/h) at 0.02 in.w.c. (5 Pa) 36 dB(A)
Low Setting 105.94 CFM (180 m3/h) at 0.24 in.w.c. (60 Pa) 58 dB(A)
Medium Setting 194.23 CFM (330 m3/h) at 0.86 in.w.c. (215 Pa) 71 dB(A)
High Setting 253.09 CFM (430 m3/h) at 1.45 in.w.c. (360 Pa) 78 dB(A)
Maximum 270.75 CFM (460 m3/h) at 1.65 in.w.c. (410 Pa) 79 dB(A)
Exhaust fan noise level (at 0 m)
Position Ventilation capacity Sound power
Absent Setting 29.43 CFM (50 m3/h) at 0.02 in.w.c. (5 Pa) 29 dB(A)
Low Setting 105.94 CFM (180 m3/h) at 0.24 in.w.c. (60 Pa) 44 dB(A)
Medium Setting 194.23 CFM (330 m3/h) at 0.86 in.w.c. (215 Pa) 55 dB(A)
High Setting 253.09 CFM (430 m3/h) at 1.45 in.w.c. (360 Pa) 63 dB(A)
Maximum 270.75 CFM (460 m3/h) at 1.65 in.w.c. (410 Pa) 63 dB(A)
General Specifications
HE Exchanger Material Polystyrene
Interior Material (E)PP / PA / PA
Thermal Yield 95%
Mass 103.62 lb (47 kg)
Maximum ambient temperature 122°F

6 - EN
2.3 Dimension sketch
31.50"
28.52"
22.40"
11.04" 4.90"
19.29"
7.09"
7.87"
11.04"
11.04"
10.43"
ø 1.26
ELECTRICAL AND DATA CONNECTION
CONDENSATION DRAIN
LEFT-HAND VERSION
CONDENSATION DRAIN
RIGHT-HAND VERSION

EN - 7
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 cond
ensation must be drained off frost-free,
at a gradient and incorporate a 'U' bend.
■ We do not recommend installing the ComfoAir in
areas with a higher average humidity (such as ba-
throom 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 an wired switch.
■ 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
atleast 0.39 inch (10 mm).
If these openings are obstructed, due to
draught blockers or deep-pile carpet, the air-
flow 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
in an environmentally friendly manner.
2.5.2 Checking the delivery
Contact your supplier immediately in case of damage
or an incomplete delivery. The delivery must 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 ERV
ComfoAir 550 R Luxe ERV
Meaning of the suffixes:
* L = Left version
* R = Right version
* ERV = Contains a enthalpy exchanger by default.
* Luxe = Contains a connection board with extra function
by default.
ComfoSense panel can be ordered separately.
2.6 Mounting of the ComfoAir
2.6.1 Mounting on the wall
23,6"
9,3" (minimum)
40,7" (minimum)
Mount the ComfoAir against a wall with a minimum
mass of 0.28 lb/in2 (200 kg/m2). For other types of
wall, we recommend 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 40.7 inch (1035 mm)
from the floor (depending on the type of conden-
sation drain selected).
Leave a minimum space of 3.3 feet (1m) in
front of the ComfoAir for carrying out main-
tenance.
2. Hang the ComfoAir on the mounting bracket.
3. Mount the condensation drain under the Com-
foAir. The stated dimension of 9.3 inch (235 mm)
is an indication only, and is dependent on the
type of condensation drain selected.

8 - EN
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 7.09
inch (180 mm), as little air resistance as possible
and free from air leakage.
■ Install a silencer of at least 3.3 feet (1m) straight
directly onto the supply and return aircon-
nections. For relevant advice, please contact
Zehnder.
■ Do not install a flexible air duct system. These
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.
Return air Exhaust air
Supply air Outside air
ComfoAir - Left
Outside air Supply air
Exhaust air Return air
ComfoAir - Right
2.6.3 Connection of the condensation drain
The ComfoAir is fitted with an enthalpy exchanger
the humidity from the extracted air is partly trans-
ferred to the fresh supply air. In this case you delay
the process of drying out the house in dry winter
months, additionally there is no condensate that
must be drained from the ComfoAir. Therefore a
condensation drain is not necessary with an enthal-
py exchanger.
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 stan-
dard screw-cap.

EN - 9
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 temperatures
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.

10 - EN
2.7.1 P menus for the user
Menu P1 ¨ Status of programmes
Status
Sub-menu Description Activated
P10 Is menu 20 currently active? Yes (1) / No (0)
P11 Is menu 21 currently active? Yes (1) / No (0)
P12 Is menu 22 currently active? Yes (1) / No (0)
P13 Is menu 23 currently active? Yes (1) / No (0)
P14 Is menu 24 currently active? Yes (1) / No (0)
P15 Is menu 25 currently active? Yes (1) / No (0)
P16 Is menu 26 currently active? Yes (1) / No (0)
P17 Is the Summermode currently active? Yes (1) / No (0)
P19 Is menu 29 currently active? Yes (1) / No (0)
Menu P2 ¨ Setting time delays
Time delay values
Sub-menu Description Minimum Maximum General
Reset
P20 n/a 0 Min. 180 Min. 0 Min.
P21
(Optional)
Note:
Only applies to systems
fitted with a corded switch and a
second switch in the bathroom.
Delay timer for the bathroom switch (to switch to high
position).
■  'x' minutes after operating the bathroom switch, the
ComfoAir switches to the high setting.
- Low voltage input
0 Min. 15 Min. 0 Min.
P22
(Optional)
Note:
Only applies to systems
fitted with a corded switch and a
second switch in the bathroom.
Overrun timer for the bathroom switch (to switch to normal
position).
■ 'x' minutes after operating the bathroom switch, the
ComfoAir switches back to the normal setting.
- Low voltage input
0 Min. 120 Min. 30 Min.
P23 n/a 0 Min. 120 Min. 0 Min.
P24 Filter warning
■ 'x' weeks after cleaning the filters the "filter dirty" alert
will reappear.
10 weeks 26 weeks 16 weeks
P25 n/a 1 Min. 20 Min. 10 Min.
P26 n/a 1 Min. 120 Min. 30 Min.
P27
Note:
Only applies to systems fitted with a
ComfoSense panel.
Time for the Boost setting.
■ After turning on the PARTY TIMER on the ComfoSense
panel, the ComfoAir will switch to the high setting for 'x'
minutes and then automatically returns tot the NORMAL
setting
If any 3-position switch is operated during this lagging time
the ComfoAir will instantly revert to the ventilation position
as set at that time.
0 Min. 120 Min. 30 Min.
P29 n/a 1% 99% 10%
Menu P9 ¨ Status of programmes (from menu P5 and P6 additional programmes)
Status
Sub-menu Description Activated
P90 Open fire programme active? Yes (1) / No (0)
P91 Bypass Open? Yes (1) / No (0)
P92 n/a Yes (1) / No (0)
P93 Afterheater on? Yes (1) / No (0)
P94 Analogue input (0-10V) active? Yes (1) / No (0)
P95 Frost protection active? Yes (1) / No (0)
P96 n/a Yes (1) / No (0)
P97 Enthalpy programme active? Yes (1) / No (0)

EN - 11
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 ABSEN T POS I T ION.
0% or 15% 97% nL / HL
15% / 15%
P31 Setting the capacity (in %) of the
exhaust fan in LOW POSI T ION.
16% 98% nL / HL
35% / 40%
P32 Setting the capacity (in %) of the
exhaust fan in MEDIUM POSIT I O N.
17% 99% nL / HL
50% / 70%
P33 Setting the capacity (in %) of the
exhaust fan to HI G H P O S ITION.
18% 100% nL / HL
70% / 90%
P34 Setting the capacity (in %) of the
supply fan to AB S ENT P OSITIO N.
0% or 15% 97% nL / HL
15% / 15%
P35 Setting the capacity (in %) of the
supply fan in LOW POSIT I O N.
16% 98% nL / HL
35% / 40%
P36 Setting the capacity (in %) of the
supply fan in M E D IUM P OSITIO N.
17% 99% nL / HL
50% / 70%
P37 Setting the capacity (in %) of the
supply fan in H I G H P O SITION.
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 (= afterheater temperature) - - Current oC
P41 Comfort temperature 12 oC28 oC20 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
All temperatures are in degrees Celsius (°C). In the back of this document you can find an conversion
table. (°F = °C × 1.8 + 32)

12 - EN
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 n/a 0 (= No) 1 (= Yes) 0
Leave the value at '0'.
P52 n/a 0 3 0
P53 n/a 0 (= No) 1 (= Yes) 0
Leave the value at '0'.
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 Afterheater.
■ 0; Afterheater not fitted
■ 1; Afterheater fitted
■ 2; Afterheater 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 an general reset the pre-programming is lost and the setting must be reset.
The right setting is mentioned on the identification plate on top of the ComfoAir.
P58 n/a 0 1 0
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.

EN - 13
Menu P6 ¨ Setting additional programmes
Additional programme values
Submenu Description Minimum Maximum General
Reset
P60 n/a 0 (= No) 3 (= Yes) 0
P61 n/a 0% 99% 0%
P62 n/a 0 oC 15 oC 7 oC
P63 n/a 10 oC 25 oC 23 oC
P64 Tah (Temperature sensor afterheater), desired 5 oC 40 oC 18 oC
The afterheater will switch off when the desired temperature is reached
Menu P7 ¨ Reading malfunctions (and system information)
All temperatures are in degrees Celsius (°C). In the back of this document you can find an conver-
sion table. (°F = °C × 1.8 + 32)
(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 "OK" on the ComfoSense
panel.
0 1
(= activate)
0
P75 General reset.
■ Set value to '1' and press “OK” on the ComfoSense panel
to carry out a general reset.
All original software settings are restored following a
general reset.
0 1
(= activate)
0
Note:
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 Rotation Per Minute (RPM).
■ The bypass valve will open and close.
P77 Resetting filter dirty counter 0 1
(= activate)
0
Note:
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.

14 - EN
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 setting
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
825 0=positive analogue input 2 1=negative setting
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 setting
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 setting
analogue input 4
0 1 0
846 read-out analogue input 4 0 100 -
850 n/a 0 1 0
851 n/a 0 1 0
852 n/a 0 100 50
853 n/a 0 99 0
854 n/a 0 100 100
855 n/a 0 1 0
856 n/a 0 100 -

EN - 15
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.
- ComfoSense panel:
a. Press OK. The display shows SHIFT for 8 se-
conds.
b. Press MENU before the SHIFT text disap-
pears. The display now shows COMF.
c. Press or to select INIT.
d. Press OK. The display flashes the text INIT
ON.
e. Confirm with OK. The display shows OK for 2
seconds.
The text INIT is visible in the main menu.
In programming mode, the bypass valve is al-
ways closed. After 30 minutes, the ComfoAir
automatically terminates the programming
mode.
2. Close all windows and outside doors.
3. Close all inside doors.
4. Check the presence of structural overflow provi-
sions.
The structural overflow provisions must be at
least 0,41 inch per gallon/second (12cm2 per
l/s).
5. Check if both fans function in the three speed
settings.
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.
If no data are known:
– Install the valves and open them as far as
possible.
– Measure the air volumes; starting with the
intake air and then the exhaust air.
– If the measured air volumes deviate from the
nominal air volumes by more than +/-10%,
and the majority of the deviations is positive,
ensure that all deviations are positive. If the
majority of all deviations is negative, ensure
that all deviations are negative. Ensure that
one supply valve and one exhaust continue
to be fully open.
8. Change the fan settings in P menus P30 to P37 of
the digital operating device.
– Select the lowest possible setting in order to
conserve energy.
– Ensure that the ratios between low, medium
and high remain equal.
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
2.8 Programming air specifications
After installation, the ComfoAir must be programmed.

16 - EN
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
2.
- ComfoSense panel:
a. Press OK. The display shows SHIFT for 8 se-
conds.
b. Press MENU before the SHIFT text disap-
pears. The display now shows COMF.
c. Press or to select INIT.
d. Press OK. The display flashes the text INIT
OFF.
e. Confirm with OK. The display shows OK for 2
seconds.
2.9 Maintenance by the installer
The following maintenance must be carry out by the
installer:
■ Inspecting and (if necessary) cleaning the heat
exchanger;
■ Inspecting and (if necessary) cleaning the fans.
A concise explanation of these maintenance activities
is given in the paragraphs below.
Check the condensation drain once every 2
years.
Failure to carry out (periodic) maintenance
on the ComfoAir ultimately compromises
the performance of the ventilation system.
2.9.1 Inspecting and cleaning the heat exchanger
Check the heat exchanger once every 2
years.
1. Disconnect the power (A) from the ComfoAir.
2. Remove the handles (B) from the ComfoAir;
3. Remove the filters from the ComfoAir.
4. Release the front panel by unscrewing the screws
(C).
5. Slide the front panel upwards and remove the
front panel from the ComfoAir.
A
B
C
6. Release the cover panel by unscrewing the
screws (D).
7. Remove the cover panel.
D
When reassembling the front cover, the
lower section must first be inserted behind
the raised edge to ensure a good seal.
E
F
8. Pull the strap (E) to remove the heat exchanger
and the leakage tray (F).
9. Remove the heat exchanger from the leakage
tray (F).
Install the leakage tray correctly underneath
the heat exchanger. The slanting side of the
leakage tray must be on the side of the con-
densation drain.
During assembly of the heat exchanger,
check the position of the four rubber seals.
10. Inspecting and if necessary clean the heat ex-
changer.
- Use a soft brush to clean the lamellae.
- Use a vacuum cleaner or air gun (no high
pressure) to remove dirt and dust.
Always clean against the direction of the air-
flow. This prevent dirt from getting stuck in
the heat exchanger.
a. Submerge the heat exchanger several times in
hot water (max. 40 °C).
b. Rinse the heat exchanger with clean hot tap wa-
ter (max. 40 °C).
c. Clasp the heat exchanger between both hands
(on the coloured side surfaces) and shake the wa-
ter from the heat exchanger.
Do not use aggressive cleaning agents or
solvents.

EN - 17
If the fans also need maintenance do not re-
install the heat exchanger yet.
11. If no more maintenance is necessary install all
parts in reverse order, reconnect the power and
carry out the self-test in accordance with menu
P76.
Fasten the screws to a maximum of 1.2 ft.lbf
(1.5Nm). This is roughly equal to setting 2 of
an average battery-powered drill.
2.9.2 Inspecting and cleaning the fans
Check the fans once every 2 years.
1. Remove the heat exchanger as instructed in the
maintenance chapter of the heat exchanger.
2. Remove the screw from the electronics carriage.
3. Pull the electronics carriage carefully forwards.
4. Release the connectors (J) and the earth wire on
the control circuit board panel and fully remove the
cables including the two grommets (K).
5. Remove the entire scroll casing (L) by pressing
the click fasteners (M).
6 Remove the inflow nozzle (N) by pressing the
click fasteners surrounding the scroll casing.
7. Inspecting and if necessary clean the fans (O).
- Use a soft brush to clean the fan impellers.
- Use a vacuum cleaner to remove dust.
K
J
M
O
N
I
L
Do not damage the fan impellers or tem-
perature sensor.
8. If no more maintenance is necessary install all
parts in reverse order, reconnect the power and
carry out the self-test in accordance with menu
P76.
Fasten the screws to a maximum of 1.5 Nm.
This is roughly equal to setting 2 of an aver-
age battery-powered drill.
2.10 Malfunctions
Malfunctions in the ComfoAir are reported as follows:
■ The malfunction alert appears on the ComfoSen-
se panel.
Malfunction alerts may not appear on the digital ope-
rating device in all cases, even though there is a mal-
function (or problem). A concise explanation of both
types of malfunction (or problem) is given in the para-
graphs below.
2.10.1Malfunction alerts on the digital operating
device
In the event of a malfunction, the corresponding mal-
function code will be displayed on the digital operat-
ing device of the ComfoAir.
Below is a list of the malfunction alerts on the digital
operating device.
In the chapter about trouble shooting is explained
how to solve these malfunctions
Code Description
A0 n/a
A1 NTC sensor T1 is defective.
(= outside air temperature)
A2 NTC sensor T2 is defective.
(= supply air temperature)
A3 NTC sensor T3 is defective.
( =return air temperature)
A4 NTC sensor T4 is defective.
(= exhaust air temperature)
A5 Malfunction in the bypass motor.
A6 n/a
A10 n/a
A11 NTC sensor Tah is defective.
(= afterheater temperature)
E1 Exhaust fan not rotating.
E2 Supply fan not rotating.
E4 ComfoAir has been switched off by
external contact.
EA1 Enthalpy sensor measures excessive
Relative Humidity (RH) values.
EA2 No communication between the enthalpy
sensor and the ComfoAir.
COMM
ERROR
No communication between the
ComfoSense panel and the ComfoAir.
FLTR Internal Filter is dirty.
FLTR EXT External Filter is dirty.