Zehnder Rittling ComfoD 180 User guide

Cooling Fresh Air Clean AirHeating
Ventilation system
ComfoD 180 and ComfoAir 180
Manual for the installer
ComfoD / Basic ComfoAir / Luxe

2 - EN
Foreword
Read this document carefully before use.
This document provides all the information required
for safe and optimal installation of the ComfoD 180
and ComfoAir180. In this document they will be
referred to as “the unit”.
The unit is subject to continuous development and
improvement. As a result, the unit may slightly differ
from the descriptions.
The following pictograms are used in this
document:
Point of attention.
Risk of:
- damage to the device;
- performance of the device is compromised if
instructions are not observed carefully.
Risk of personal injury for the user.
Maintenance
Questions
Please contact the supplier if you have any questions
or would like to order a new document or new filters.
The contact details of the main supplier(s) can be
found in the user manual.
The following information can be found in the
User manual:
Information
General information about the ventilation system.
Operating devices available for the unit.
Warranty and liability conditions.
EEC declaration of conformity.
How to maintain the filters of the unit.
How to maintain the valves of the ventilation system.
The following information can be found in the
Service manual:
Information
How to commission the unit
How to use P-menus.
How to maintain the unit
How to solve errors
All rights reserved.
This documentation 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 document. In case of disputes the English version of
these instructions will be binding.

EN- 3
Table of Contents
Foreword ...................................................................................................................................................................2
1 Safety ........................................................................................................................................................................5
2 Installation conditions ............................................................................................................................................. 5
3 Transport and unpacking.........................................................................................................................................5
4 Technical specifications ..........................................................................................................................................6
4.1 Configuration unit................................................................................................................................................7
4.2 Dimension sketch ................................................................................................................................................8
4.3 Wiring diagram .................................................................................................................................................. 10
5 Installation .............................................................................................................................................................. 12
5.1 Rework Right to Left version ............................................................................................................................. 12
5.2 Wall mounting, standard ................................................................................................................................... 13
5.3 Wall mounting, restricted height........................................................................................................................ 14
5.4 Wall mounting, restricted height and width ....................................................................................................... 15
5.5 Air ducts............................................................................................................................................................ 16
5.5.1 Top air ducts ........................................................................................................................................... 16
5.5.2 Bottom supply air duct............................................................................................................................ 16
5.6 Condensation drain ........................................................................................................................................... 18
5.6.1 U- ben d .................................................................................................................................................... 18
5.6.2 Dry syphon.............................................................................................................................................. 18
5.7 Valves and/or grilles .......................................................................................................................................... 18
5.8 Extractor hood (optional)................................................................................................................................... 19
5.9 External filter (optional)...................................................................................................................................... 19
5.10 Unregulated sub-soil heat exchanger (optional) ................................................................................................ 19

4 - EN

EN- 5
1 Safety
Always follow the safety regulations, warnings,
comments and instructions given in this document.
Personal injury or damage to the unit can arise
from non-compliance with the safety regulations,
warnings, comments and instructions in this
document.
■Only a certified engineer may fit, connect,
commission and maintain the unit unless
otherwise indicated in this document;
■Installation of the unit must be carried out
in accordance with the general and locally
applicable construction, safety and installation
instructions of the local council, electricity and
water boards or other agencies;
■The unit is only suitable for a 230V 50/60Hz
connection;
■The unit is only suitable for residential use and
not for industrial use, such as swimming pools or
saunas;
■Ensure while working on the unit that the
power has been controllered off and cannot be
accidentally controllered back on;
■Always take ESD-inhibiting measures when
dealing with electronics, such as wearing an
antistatic wristband;
■After using the user manual, place it back on the
unit;
■It is prohibited to modify the unit or the
specifications stated in this document;
■The unit cannot be opened without using tools;
■It must not be possible to touch the fans by hand,
which is why ducts of at least 900 mm must be
connected to the unit.
2 Installation conditions
In order to determine whether the unit can be
installed in a certain area, the following aspects
must be taken into account:
■The system must be fitted to allow sufficient
room around the unit for the air duct connections,
condensation drain as well as for carrying out
maintenance activities;
■The unit must be installed in a frost-free space;
■We do not recommend installing the unit in areas
with a higher than average humidity (such as
bathroom or wc). This will prevent condensation
on the outside of the unit;
■The room must offer the following provisions:
- Air duct connections;
- Electrical power connection;
- Wiring for a wired control controller;
- Provisions for the condensation drain.
3 Transport and unpacking
Take the necessary precautions when
transporting and unpacking the unit and
make sure the packing material is disposed
of in an environmentally friendly manner.
Checking the delivery
Contact your supplier immediately in case of damage
or an incomplete delivery. The delivery should at
least include:
■The unit: check the identification plate to ensure
that it is the required type;
■2 Mounting brackets;
■6 Spacers;
■Service/ComfoSense connector;
■Documentation.
Meaning of the suffixes found on the
identification plate
■ComfoAir = Product family name.
■ComfoD = The unit has a display installed as
default.
■180 = Product type name
(Air volumes in m3/h)
■Basic = The unit has a display installed as
default.
■Luxe = The unit has no display installed as
default.
■Enthalpie = The unit has a enthalpy exchanger
installed as default.
■ERV = The unit has a enthalpy exchanger
installed as default.
■PH = The unit has a pre heater installed as
default.
■V = The unit has a pre heater installed as
default.

6 - EN
4 Technical specifications
Position Ventilation capacity Power Current Silencer
housing
Sound power1
Supply fan
Sound power1
Exhaust fan
15% 28 m3/h at 3 Pa 7 W 0.08 A 27. 2 d B ( A ) 39 dB(A) 38 dB(A)
20% 37 m3/h at 6 Pa 8 W 0.09 A 27. 8 d B ( A ) 40 dB(A) 39 dB(A)
30% 55 m3/h at 14 Pa 10 W 0.10 A 29.8 dB(A) 42 dB(A) 40 dB(A)
40% 76 m3/h at 27 Pa 13 W 0.14 A 31.9 dB(A) 45 dB(A) 41 dB(A)
50% 97 m3/h at 44 Pa 18 W 0.20 A 34.7 dB(A) 43 dB(A) 43 dB(A)
60% 118 m 3/h at 64 Pa 26 W 0.27 A 37. 4 d B ( A ) 53 dB(A) 45 dB(A)
70% 141 m3/h at 92 Pa 37 W 0.37 A 40.2 dB(A) 57 dB(A) 48 dB(A)
80% 160 m3/h at 118 Pa 50 W 0.48 A 42.9 dB(A) 59 dB(A) 50 dB(A)
90% 178 m3/h at 147 Pa 66 W 0.61 A 44.7 dB(A) 62 dB(A) 52 dB(A)
100% 195 m3/h at 175 Pa 85 W 0.75 A 45.8 dB(A) 63 dB(A) 53 dB(A)
Default settings air volume
Absent Setting (nL / HL) 15% 15%
Low Setting (nL / HL) 35% 40%
Medium Setting (nL / HL) 50% 70%
High Setting (nL / HL) 70% 90%
Connection data
Power Supply 230V±10%, single phase, 50/60Hz
cos f20.38 – 0.49
Power Maximal 1250 W 5.77 A
Power Pre heater3250 W 4.99 A
General specifications
Material Housing Coated Sheet Steel
Material Interior EPP and ABS
Material Heat Exchanger Polystyrene
Material Enthalpy Exchanger Polyethylene-polyether-copolymer
Thermal Yield2up to 89%
Weight 24kg
Humidity Maximal 72% at 20°C
Ambient temperature (minimum / maximum) 0°C 40°C
IP classification IP40
Filter class (outdoor air / return air) G4 or F7 G4
Type speed control 4 speed
Connecting air ducting Sleeve
Nominal diameter air ducting (top / bottom) rectangular 125
Temperature sensors 10k NTC KTY 81-210
Temperature Resistance MIN. Resistance MID. Resistance MAX.
10 ºC 19,570 kΩ 19,904 kΩ 20,242 kΩ
15 ºC 15.485 kΩ 15,712 kΩ 15,941 kΩ
18 ºC 13,502 kΩ 13,681 kΩ 13,861 kΩ
19 ºC 12,906 kΩ 13,071 kΩ 13,237 kΩ
20 ºC 12,339 kΩ 12,491 kΩ 12,644 kΩ
21 ºC 11,801 kΩ 11,941 k Ω 12,082 kΩ
22 ºC 11,291 kΩ 11,420 kΩ 11,550 kΩ
25 ºC 9,900 kΩ 10,000 kΩ 10,100 kΩ
30 ºC 7, 9 59 k Ω 8,057 kΩ 8,155 kΩ
1The Lw noise power level is measured at 0m
2According to standard EN13141-7
3At -15°C and 180m³/h

EN- 7
4.1 Configuration unit
Position Part
AExternal casing of coated sheetsteel
BInterior of high-quality, expanded polypropylene EPP and ABS
C5 connections for the air ducts
D2 filters for air purification
E2 energy-efficient DC motors with high-efficient fan
FHE (High efficient) heat exchanger or enthalpy exchanger (standard in unit version “Enthalpie” and “ERV”)
GDisplay to read data, and for programming procedures (not present in the unit version “Luxe”)
HElectronics box with the Control PCB of the unit for all the standard connections
IIdentification plate detailing information on the unit (not visible)
JCondensation drain to drain the condensation of the warm return air
KSticker detailing the air connections (not visible)
L2 Service connectors for the ComfoSense or PC
The service connectors cannot be used at the same time
M4 Filter caps
NPre heater (standard in unit version “V” and “PH”)
B
G
A
C
CC
D D N
E
F
G
H
J
K
LI
L
M
M

8 - EN
4.2 Dimension sketch
558
65525 680
115
60
25
022
25
30 30
280 109
12
299
20 C
i
125
87
86 194
140140
144

8 - EN EN- 9
Legend
Code Description
ODA Outdoor air
SUP Supply air
ETA Extract air
EHA Exhaust air
CCondensation drain
655
200
55868 44
680
128 118
100
323347
10
333
150
128 104
SUP
ODA
ETA
EHA
SUP

10 - EN
4.3 Wiring diagram
Legend Colour code
Code Colour Code Colour Code Colour
(N) B Blue (L1) G Grey WWhite
(PE) G/Y Green/ Yellow (L2) Bl Black YYellow
(L3) Br Brown RRed
Legend
Code Decription Code Decription
PH Pre heater T1 NTC-Sensor Outdoor air
M1 Exhaust motor T2 NTC-Sensor Supply air
M2 Supply motor T3 NTC-Sensor Return air
DISPLAY Display T4 NTC-Sensor Exhaust air
BYP Bypass valve BS Bathroom controller
LED n/a SERV Service/ComfoSense connector
Control PCB

10 - EN EN- 11
Power cord Luxe version
ComfoSense
Position controller

12 - EN
5 Installation
5.1 Rework Right to Left version
The unit version “Luxe” can be used as a Right-
hand version or Left-hand version. Just mount the
mounting bracket on the required side.
The unit with display is supplied as a Right-hand
version (the supply and return side are on the right
side of the unit). Follow the steps below when a Left-
hand version is wanted:
1 2 3
Remove the front panel by unscrewing
the 4 screws.
Release the back panel by unscrewing
the 4 screws.
Remove the display connector.
45 6
Remove the grommet including the
display cable.
Release the display by unscrewing the
2 screws.
Place the removed display on the back
side of the unit.
Remove the grommet on the back side
of the unit.
Place the removed grommet on the
front side of the unit.
78 9
Run the display cable to the rear of
the unit.
Make sure the display cable is
fixed between the holding pins
in the middle of the frame.
Slide the grommet on the display
cable to the correct position and place
the grommet into the opening.
Run the display cable between the
holding pins next to the display.
Connect the display connector again.
Place the removed display on the back
side of the unit.
Remove the grommet on the back side
of the unit.

12 - EN EN- 13
5.2 Wall mounting, standard
450mm
131mm524mm
minimum 575mm
minimum
350mm
1 2
Mount the unit against a wall
with a minimum mass of 200
kg/m2.
The stated height is an indication, and
is dependent on the type of air ducts
and condensation drain selected.
Remove the top 2 screws from the
rear.
If no display is fitted:
Use the air-flow direction sticker on
top of the unit to determine which side
is the rear.
Use the screws removed to secure 1
of the mounting brackets supplied to
the unit.
■Place the flat side of the mounting
bracket against the unit;
■Place the sloping side of the
mounting bracket downwards;
34 5
Remove the bottom 2 screws from
the rear.
Use the screws removed to secure 2
of the spacers supplied to the unit.
Mount the second mounting bracket
supplied to the wall, ensuring it is
level.
■Place the flat side of the mounting
bracket against the wall;
■Place the sloping side of the
mounting bracket upwards;
67Example air duct 8Example siphon
Hang the unit on the mounting bracket
fixed to the wall.
Fit the air ducts to the unit as
described in the section on mounting
air ducts.
Fit the siphon to the bottom of the
unit as described in the section on
mounting the condensation drain.
9Example of
controller(s)
10 Example valve
Example grille
11
0
50
100
150
200
250
300
350
400
0 50 100 150 200 250 300
pst [Pa]
Qv [m3/h]
100%
40%
30%
15%
90%
80%
70%
60%
50%
Example graph
Connect the required controllers(s) as
described in the relevant controller
manual.
We recommend using the
front-most connector for the
ComfoSense.
Fit the valves and/or grilles as
described in the section on mounting
valves and/or grilles.
Programme the required air-flow
volumes and time delays as described
in the service manual.
Fill in the installation report.

14 - EN
5.3 Wall mounting, restricted height
minimum
150mm
450mm
minimum
150mm
minimum
332mm
minimum 549mm
1 2
Mount the unit against a wall
with a minimum mass of 200
kg/m2.
The stated height is an indication, and
is dependent on the type of air ducts
and condensation drain selected.
Remove the top 2 screws from the
rear.
If no display is fitted:
Use the air-flow direction sticker on
top of the unit to determine which side
is the rear.
Use the screws removed to secure 1
of the mounting brackets supplied and
2 of the spacers supplied to the unit.
■Place the flat side of the mounting
bracket against the unit;
■Place the sloping side of the
mounting bracket upwards;
Allow the notches in the spacers to
slot over the mounting bracket.
34 5
Remove the bottom 2 screws from
the rear.
Use the screws removed to secure 2
of the spacers supplied to the unit.
Mount the second mounting bracket
supplied to the wall, ensuring it is
level.
■Place the flat side of the mounting
bracket against the wall;
■Place the sloping side of the
mounting bracket downwards;
6Example of
controllers(s)
7Example air duct 8Example siphon
Connect the required controllers(s) as
described in the relevant controller
manual.
We recommend using the
front-most connector for the
ComfoSense.
Fit the air ducts to the unit as
described in the section on mounting
air ducts.
Fit the siphon to the bottom of the
unit as described in the section on
mounting the condensation drain.
910 Example valve
Example grille
11
0
50
100
150
200
250
300
350
400
0 50 100 150 200 250 300
pst [Pa]
Qv [m3/h]
100%
40%
30%
15%
90%
80%
70%
60%
50%
Example graph
Hang the unit on the mounting bracket
fixed to the wall.
Screw the 4 spacers to the wall.
Fit the valves and/or grilles as
described in the section on mounting
valves and/or grilles.
Programme the required air-flow
volumes and time delays as described
in the service manual.
Fill in the installation report.

14 - EN EN- 15
5.4 Wall mounting, restricted height and width
450mm
131mm524mm
minimum 549mm
minimum
332mm
1 2
Mount the unit against a wall
with a minimum mass of
200 kg/m2. The sides should
be stable enough to support
the unit.
The stated height is an indication, and
is dependent on the type of air ducts
and condensation drain selected.
Remove the top 2 screws from the
rear.
If no display is fitted:
Use the air-flow direction sticker on
top of the unit to determine which side
is the rear.
Use the screws removed to secure 1
of the mounting brackets supplied to
the unit.
■Place the flat side of the mounting
bracket against the unit;
■Place the sloping side of the
mounting bracket upwards;
34 5
Remove the bottom 2 screws from
the rear.
Use the screws removed to secure 2
of the spacers supplied to the unit.
Mount the second mounting bracket
supplied to the wall, ensuring it is
level.
■Place the flat side of the mounting
bracket against the wall;
■Place the sloping side of the
mounting bracket downwards;
6Example of
controllers(s)
7 8 Example siphon
Connect the required controllers(s) as
described in the relevant controller
manual.
We recommend using the
front-most connector for the
ComfoSense.
Fit the ComfoPipe Plus air ducts to
the unit as described in the section on
mounting air ducts.
Fit the siphon to the bottom of the
unit as described in the section on
mounting the condensation drain.
910 Example valve
Example grille
11
0
50
100
150
200
250
300
350
400
0 50 100 150 200 250 300
pst [Pa]
Qv [m3/h]
100%
40%
30%
15%
90%
80%
70%
60%
50%
Example graph
Hang/slide the unit onto the mounting
bracket to the wall.
Press the side of the 4 spacers
supplied against the 4 corners of the
unit and screw them onto the side of
the unit.
Ensure that the spacers do
not block the removable front.
Fit the valves and/or grilles as
described in the section on mounting
valves and/or grilles.
Programme the required air-flow
volumes and time delays as described
in the service manual.
Fill in the installation report.

16 - EN
5.5 Air ducts
Legend
Code Decription
ODA Outdoor air
SUP Supply air
ETA Extract air
EHA Exhaust air
SUP
ODA
ETA
EHA
SUP
The following must be taken into account when
fitting the air ducts:
■The distance (E) between the opening of the
supply duct (A) and the opening of the extraction
duct (B) must be at least 1.5 m;
■The position of the supply opening (A) relative
to other possible sources of stale air is very
important (other exhaust-air outlets, street versus
garden, etc.);
■The exhaust duct should drain (D) in the direction
of the unit.
5.5.1 Top air ducts
The unit’s top air duct openings can only be
connected using a connector from the Zehnder
ComfoPipe Plus air duct system. The following types
of connector may be used:
■Right-handed connector;
■Left-handed connector;
■Vertical connector;
To fit the ComfoPipe Plus connector to the unit, refer
to the instructions supplied with the connector.
5.5.2 Bottom supply air duct
At the bottom the unit is equipped with an optional
Ø125mm supply air duct. The supply air fan needs
to be rotated and the top supply air duct must be
closed off when the bottom supply air duct is used.
The top supply air duct can be closed off with a
ComfoPipe Plus Wall feed-through set.
The following aspects must be taken into account,
while installing the bottom air supply duct:
■To prevent unnecessary temperature loss in either
the summer or the winter, we recommend fitting
thermal and damp-proof insulation to the supply
duct from the unit up to the supply valves;
■Install the air duct with a minimum ø of 125mm, as
little air resistance as possible and free from air
leakage;
■Make sure the inside of the air ducts do not have
an obstruction of any sort. Air ducts must not
have sharp bends, dents or long screws inside.
Obstructions will compromise the performance
and maintenance of the system;
■Install a silencer of at least 1m straight directly
onto the supply air connection. For relevant
advice, please contact Zehnder;
■When using a flexible channel only Zehnder
channel systems may be used. Any other flexible
channel will disturb the basic operating principle
of the balanced ventilation system.

16 - EN EN- 17
Follow the steps below when the bottom supply air duct is used:
A
1 2
Seal the top supply air duct and
remove the seal cap from the bottom
opening (A).
Release the front panel by removing
the 4 screws.
Pull on the strap to remove the heat
exchanger, the bypass duct and the
leakage tray.
Do not cut the strap.
34 5
Remove the sensor and its cabling
from the supply-fan casing.
Press the 2 click connectors of the
supply-fan casing outwards and pull
the casing forwards.
Disconnect the fan cabling on the side
and rear of the supply-fan casing.
Guide the cabling through the clamps
on the other side of the supply-fan
casing.
67 8
Remount the supply-fan casing
upside-down (180°) in the 2 click
connectors (E).
Refit the sensor to the supply-fan
casing.
Guide the sensor cabling through
the second clamp on the supply-fan
casing.
Refit the heat exchanger into the unit.
Refit the front panel to the unit.

18 - EN
5.6 Condensation drain
The condensation must be drained off frost-free, at
a gradient and incorporate an air seal (U-bend or dry
syphon). The connection for the condensation drain
is located underneath the unit and has an external
diameter of 20mm .
min 60mm
5.6.1 U-bend
When an Enthalpy exchanger is present the unit
may not be installed with a u-bend.
The following aspects must be taken into account,
while installing the u-bend:
■Connect the condensation drain of the unit, via a
pipe or hose, to a water seal (siphon);
■Position the upper edge of the water seal at least
60mm underneath the condensation drain of the
unit;
■Make sure that the outer end of the pipe or tube
exit is at least 60mm below the water level;
■The u-bend of the unit may not be connected
directly to the domestic waste-water system. The
u-bend of the unit must have a free outlet to the
syphon of the domestic waste-water system.
5.6.2 Dry syphon
When an Enthalpy exchanger is present the unit
must be installed with a dry syphon.
The following aspects must be taken into account,
while installing the dry syphon:
■Position the upper edge of the dry syphon ball at
least 60mm underneath the condensation drain of
the unit;
■The dry syphon of the unit may not be connected
directly to the domestic waste-water system. The
dry syphon of the unit must have a free outlet to
the syphon of the domestic waste-water system.
5.7 Valves and/or grilles
Example grille Example valve
The following aspects must be taken into account,
while installing valves and/or grilles:
■Install the valves and/or grilles at least 1m from
each other;
■To increase the comfort for the user use clean
sector valves when the valves are installed close
to the wall;
■We recommend that the ventilation system is
fitted with supply and extract valves made by
Zehnder;
■A gap or grate should be left near the doors in
order to ensure effective and draught free airflow
in the house. The gap or grate must provide an
overflow of at least 12 cm2per l/s (a gap under
the inside doors must be at least 7600mm2above
the floor finish).
If these openings are obstructed, due to
furniture, draught excluders or deep pile carpet,
the airflow in the house will stagnate. As a result,
system performance will be compromised or fail
altogether.

18 - EN EN- 19
5.8 Extractor hood (optional)
Example extractor hood
It is possible to fit the ventilation system with a non-
powered extractor hood. The extractor hood is part
of the ducting of the ventilation system, and does
not form part of the unit. The unit can therefore not
turn a non-powered extractor hood on and off. We
recommend that the ventilation system is fitted with
a non-powered extractor hood made by Zehnder.
A powered extractor hood may never be
connected to the same ducting as the unit.
To protect the heat exchanger from the dirt removed
with the non-powered extractor hood the ducting
between the non-powered extractor hood and unit
must be at least 3m.
5.9 External filter (optional)
Example external filter
It is possible to fit the ventilation
system with an external filter, for
instance the FilterBox from
Zehnder. The external filter is
part of the ducting of the
ventilation system, and does not
form part of the unit. The unit can therefore not
provide an filter error for the external filter.
5.10 Unregulated sub-soil heat
exchanger (optional)
Example unregulated
sub-soil heat
exchanger inlet
It is possible to fit the ventilation
system with an unregulated
sub-soil heat exchanger. The
sub-soil heat exchanger is part of
the ducting of the ventilation
system, and does not form part
of the unit. It is therefore not
possible to control a sub-soil
heat exchanger from the unit.

SUP
ODA
ETA
EHA
SUP
Quick Installation Guide
Please refer to the full installation manual for detailed
installation and commissioning information.
Legend
Code Colour
ODA Outside air
SUP Supply air
ETA Return air
EHA Exhaust air
NBlue
L1 Grey
L2 Black
L3 Brown
SERV Service/ComfoSense connector
450mm
131mm524mm
minimum 575mm
minimum
350mm
ZGNL-Manual_849050092, V0614, EN, Subject to change