Zehnder Rittling ComfoClime 24 User manual

ComfoClime 24
ComfoClime 36
Service manual
Decorative radiators Comfortable indoor ventilation Heating and cooling ceiling Clean air solutions

EN - 2
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.
Table of Contents
Preface............................................................................................................................3
1 Introduction................................................................................................................... 3
2 ComfoClime unit internal access .....................................................................................4
2.1 Access to the LEFT front coil.............................................................................................. 4
2.2 Access to the LEFT front part ............................................................................................ 5
2.3 Access to the RIGHT back part (siphon and condensation tray) ............................................ 6
2.4 Access to the RIGHT back condensation tray...................................................................... 7
2.5 Replacement of the actuators ............................................................................................ 8
2.6 Wiring diagram ComfoClime..............................................................................................10
3 Logistics & Distribution ................................................................................................. 11
3.1 Part numbers ComfoClime ................................................................................................11
3.2 Part numbers spare parts.................................................................................................12
4 Error and alarm messages............................................................................................ 14
5 Maintenance and cleaning............................................................................................ 15
6 Sales and technical support ......................................................................................... 15
6.1 Communication & Documentation......................................................................................15
6.2 Contacts.........................................................................................................................15
All the manuals are downloadable scanning this QR-code.
You’ll be redirected to the download page where you can select
among a wide range of languages.
All the manuals can be downloaded also at this link:
https://www.product-registration.zehnder-systems.com/document/comfoclime

3 - EN
Preface
IMPORTANT!
Carefully read this manual before use.
This manual provides all the information required for safe and optimal installation and maintenance
of the ComfoClime 24 or ComfoClime 36. It is also intended as a reference for servicing, so that
this can be carried out in a responsible manner. The unit is subject to continuous development
and improvement. As a result, the ComfoClime 24 or ComfoClime 36 may slightly differ from the
descriptions.
NOTE : this manual has been compiled with the utmost 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.
The following pictograms are used in this document:
Symbol Meaning
Consult the manual before using/operate the equipment.
Point of attention / important informations.
Risk of compromised performance or damage to the ventilation system / risk of
personal injury.
Caution electrical hazard!
1 Introduction
Zehnder ComfoClime unit can be configured as left or right version, via software, during the
commissioning of the system.
Zehnder Group International - Via G. di Vittorio 6 - 41011 Campogalliano (MO), Italy
T [phone] - F [phone]

EN - 4
2 ComfoClime unit internal access
2.1 Access to the LEFT front coil
Always comply with the safety regulations, warnings, comments and instructions
given in this document. Failure to comply with the safety regulations, instructions,
warnings and comments may lead to personal injury or damage to the unit.
Before starting any operation, disconnect the main plug from the power supply and
make sure that the unit is voltage free.
In order to proceed with access to the LEFT front coil, follow the steps as described below:
Step Action
1
Remove the ComfoClime black
top cover Aby pulling the cover
and unfastening the 4 hooks.
During this operation be careful
not to damage the electronic
board placed behind the cover.
A
2
Unscrew the two screws on the
top and the two on the bottom of
the front of the unit and remove
the white frontal panel B of the
ComfoClime, lifting it a little then
extracting the lower side.
B
3Remove the front metal sheet C
by unscrewing all the screws D.
D
C

5 - EN
Step Action
4
The coil Eis visible on the left
side (higlighted in red);
it is possible to clean it using a
vacuum cleaner, a compressor
taking care of closing the below
intake of the ComfoAir Q to
avoid dirt falling down into the
ComfoAir Q (see after for access
to condensation tray).
During maintenance operations,
check for gas leakages and
do a visual inspection of the
components.
E
CAUTION!
The supplier shall not be held liable for any damage, to things or people, caused by
accidents due to a failure to comply with the instructions provided in this manual and
in the following chapters.
2.2 Access to the LEFT front part
In order to proceed with access to the LEFT front condensation tray, follow the steps as described
below:
Step Action
1Please follow the previous sequence described in the "Paragraph 2.1 - Step 1 to 3", to
get access to the internal components.
2
Remove the metallic plate A
by unscrewing the two frontal
screws in order to see the bottom
of the condensation tray.
A

EN - 6
Step Action
3
Unscrew the two screws Bthat
lock the bypass flap C then pull
it gently toward you rotating it
slightly.
Pay attention to prevent
the back bolt and its
washer B from falling
down.
B
C
4It is possible to replace the internal siphon extracting gently the rubber hose ends.
2.3 Access to the RIGHT back part (siphon and condensation tray)
Always comply with the safety regulations, warnings, comments and instructions
given in this document. Failure to comply with the safety regulations, instructions,
warnings and comments may lead to personal injury or damage to the unit.
In order to proceed with access to the RIGHT back coil (siphon and condensation tray), follow the
steps as described below:
Step Action
1Please follow the previous sequence described in the "Paragraph 2.1 - Step 1 to 3", to
get access to the internal components.
2
The coil is not visible because
it is behind the metallic wall on
the right side of the unit. To get
access to the right back coil,
please unscrew the metallic panel
A.
A
B

7 - EN
Step Action
3
The coil and the condensation
tray are visible and it’s possible
to clean the coil with a vacuum
cleaner, or a brush taking care
of closing the below intake of
the ComfoAir Q to avoid the dirt
falling down into the ComfoAir Q.
B
2.4 Access to the RIGHT back condensation tray
In order to proceed with access to the RIGHT back condensation tray, follow the steps as described
below:
Step Action
1Please follow the previous sequence described in the "Paragraph 2.1 - Step 1 to 3", to get
access to the internal components.
2Please follow the previous sequence described in the "Paragraph 2.3 - Step 1 to 3", to get
access to the internal components.
3
It is possible to replace the
internal siphon extracting gently
the rubber hose ends A.
A

EN - 8
2.5 Replacement of the actuators
In order to proceed with the replacement of the actuators, follow the steps as described below:
Step Action
1Please follow the previous sequence described in the "Paragraph 2.1 - Step 1 to 3", to
get access to the internal components.
2
Identify the actuators A placed in
the central bottom area, before
the compressor.
The actuator on the
left controls the flap on
the left ; the one on the
right commands the flap
on the right through a
leverage.
A
3Unplug the two connectors Bfrom
the upper part of the actuator.
B

9 - EN
Step Action
4
Unscrew the two screws C that
hold it attached to the frame and
gently pull it out paying attention
not to loose parts of it.
C
CAUTION!
The supplier shall not be held liable for any damage, to things or people, caused by
accidents due to a failure to comply with the instructions provided in this manual and
in the following chapters.
C

EN - 10
2.6 Wiring diagram ComfoClime
FS-1 Power supply lter 10A FS-2 Electric panel lter 10A
AB Air bypass
4W 4 way valve
RT Right coil probe
IPT Right air sensor probe
OT Left coil probe OPT Left air sensor probe
L-H Can-bus EEV Electronic expansion valve BA Airduino board
CM Compressor CP Compressor probe
ID Inductance
PB Power board DB Driver Board MM Main Mcu board BA Airduino board
PB
N
L
PE
N
L
PE
PEPE PEPE
FS-2
BN-
1
mmq
BL-
1mmq
BL-
1mmq
BN-
1mmq
DB
MM
P3 P3 Heater1
Valve
Drain Pump Heater2 P2 Heater1
Valve
Drain Pump Heater2
s
N.O
COM
ACL -IN
ACN -IN
VDC - VDC +
GND +15V
COM M-D r
CN3
FAN PO WER
CN10
COM -CO N
CN1
BRN
CN2
BLU CN4
PE PE PE
CN5
BLK
CN6
Nout
CN8
Lout
CN9
PE
RED
CN7
LAMIERA
QUADRO BASAMENTO
YE-GN-1mmq
YE-GN-1mmq YE-GN-1mmq
BL-1mmq BN-1mmq
MAGNETIC COIL
N276246A
RL1
CN1
RL2
CN2
RL3
CN3
RL4
CN4
RL5
CN5
ELEC .VALV E
CN8
N.C
COM
STEP MO TOR
CN10
CN13 CN13 CN13
Door Door Level
Alarm
Level
Alarm
CN16 CN17 CN18 CN12
V
U
W
COM P XP209
CON
XP101
RED
BLK
GRN
COIL
XP211
ENVI
XP212
N
P
L
ACL_INACN_IN
L
XP107
XP103
CN5
CN10CN14
CN7
DISP LAY
CN11
OUT FA N
CN9
DC IN FAN
CN7
FAN PO WER
CN6
+5V
SCK
DI0 GND RT
IPT
RT
IPT
OT OPT OT OPT TS TS
TX
RX
GND
+5V
+12V
FG
VSP
+15V
GND
+310 V
+15V
IF-PMW IF-FG
+310V GND
+15V GND GND +310V
s s s
P1
s
EEV
OR-22
AWG
AB
4W
AIR-2
DHW
Air-3
Confonet
GND
+5V
RX
TX
+12V
B
GND
CAN -H
CAN -L
12V
BA
A
Air-1
Confoclime
Power Monitor
HL
CM
ID
YE-GN-
1mmq
YE-0.35mmq
GN-0.35mmq
GY-0.35mmq
WT-0.35mmq
BN-0.35mmq
RD-22
AWG
YE-22
AWG
BK-22
AWG
GY-22
AWG
BL-22
AWG
BK-1mmq BK-1mmq
VT-1mmq VT-1mmq
YE-GN-1mmq YE-GN-1mmq
BN-1mmq
GY-1mmq
BK-22
AWG
BK-22
AWG
BK-22
AWG
BK-22
AWG
BK-22
AWG
BK-22
AWG
BK-22
AWG
BK-22
AWG
BN-0.35mmq
YE-0.35mmq
GN-0.35mmq
WT-0.35mmq
YE-GN-1mmq
RD-22
AWG
BK-22
AWG
YE-22
AWG
BL-22
AWG
GY-22
AWG
BN-22
AWG
GN-22
AWG
BN-1mmq
BK-1mmq
RD-1mmq
RD-1mmq RD-1mmq
BK-1mmq
BN-1mmq
BN-1mmq
GY-1mmq
OR-1mmq BN-1mmq RD-1mmq
BK-1mmq
YE-22
AWG
WT-22
AWG
BK-22
AWG
BK-22
AWG
RT
IPT
OT
OPT
CP
FS-1
BN-
1mmq
BL-
1mmq
BL-
1mmq
BN-
1mmq
POWER SUPPLY
-230 VAC-
BN-22
AWG
N500233A
ATADAMRIFACIFIDOM.VERENOIZIRCSEDECIDOC
N570016A
1Rivisto le disposizioni dei cavi all'interno del quadro elettrico Nicola Rossi 19/04/2022
2Aggiunto cavo di terra sulla morsettiera Nicola Rossi 07/11/2022

11 - EN
3 Logistics & Distribution
3.1 Part numbers ComfoClime
Article numbers
Climatic ventilation unit Product number
ComfoClime 24 - EU 471420020
ComfoClime 36 - EU 471420010
ComfoClime 24 - UK 471420070
ComfoClime 36 - UK 471420080
ComfoClime 24 - CH 471420090
ComfoClime 36 - CH 471420100

EN - 12
3.2 Part numbers spare parts
Mechanical Component
POS Part number Name
1471429171 ComfoClime by-pass actuator
2471429172 ComfoClime Q by-pass damper
3471429173 ComfoClime Q filter
4471429174 ComfoClime Q fan
5471429175 ComfoClime plastic bushing
6471429178 ComfoClime short damper
7471429179 ComfoClime long damper
8471429180 SHUTTER BUSH
9471429181 RETURN SHUTTER
10 471429182 SHORT TIE ROD
11 471429183 LONG TIE ROD
12 471429184 CONDENSATION TRAY
13 471429185 FIXED ACTUATOR BUSH
14 471429186 ACTUATOR TRANSFER
15 471429187 LONG SHUTTER
16 471429188 SHORT SHUTTER
17 471429189 EPP ADAPTER
18 471429190 RUBBER GASKETS
19 471429191 ANTI-TIPPING KIT
20 471429192 WALL BRACKET
21 471429193 CONDENSATE DRAIN TRAP
22 471429194 TEMPERATURE SENSOR
23 471429195 RUBBER CAP FOR CONDENSATE DRAIN
24 471429196 TERMINAL BLOCK
25 471429197 FRONT PANEL
26 471429198 AESTHETICS SUP. FRONT
27 471429203 SHORT RUBBER HOSE INTERNAL SYPHON
-471429199 WIRING GROUP (cables)
Electronics
POS Part number Name
28 610000004 ARDUINO ELECTRONIC BOARD
29 610000005 POWER BOARD
30 471429177 COMPRESSOR DRIVER BOARD
31 471429202 HEAT PUMP ELECTRONIC BOARD
-471429176 POWER BOARD

13 - EN
1 19 20
5
117
1 12
1
23
1
26
1
28
1
17
1
24
1
25
1
18
1
2
1
21
116
1
30
129
1
31
1
27

EN - 14
4 Error and alarm messages
In this page it is possible to read the messages coming from the unit: errors, alarms, alert, advice.
Each of them is related to the interested device.
The following table lists the error codes that could appear in this page:
Code Component Description Solution
1Airduino The rotary encoder is set to a forbidden value. Call Zehnder Service
21 CAQ ComfoAirQ communication error. CAQ not
visible on ComfoNet.
Check that the green LED
on CAQ and Clime is fixed
lit. Try rebooting all the
system. Check that all the
firmwares are up to date.
If not fixed call Zehnder
Service
22 CAQ Failed to synchronize CAQ comfort
temperature profile Same as 21
23 CAQ Failed to synchronize CAQ comfort
temperature value Same as 21
24 CAQ Failed to set CAQ comfort temperature mode Same as 21
25 CAQ Failed to synchronize CAQ cooling limit Same as 21
26 CAQ Failed to synchronize CAQ heating limit Same as 21
27 CAQ Failed to get ComfoAirQ orientation Same as 21
28 CAQ ComfoAirQ not commissioned Do the commissioning
procedure on the CAQ
31 HP board Heatpump board communication error Tryt rebooting the system or, if not sorted out, Call
Zehnder Service
32 HP board Clime supply temperature probe failed Call Zehnder Service
33 HP board Clime incoil temperature probe failed Call Zehnder Service
34 HP board Clime mixed air temperature probe failed In ComfoClime36 this
could be due to error 38
35 HP board Clime outcoil temperature probe failed Call Zehnder Service
36 HP board Clime fan error Call Zehnder Service
37 HP board Clime Compressor driver communication
error Call Zehnder Service
38 HP board Clime HP data timeout Call Zehnder Service
39 - 47 HP board Reserved for future use
48 Inverter Inverter phase current limit error Call Zehnder Service
49 Inverter Inverter current limit error Call Zehnder Service
50 Inverter Inverter power limit error Call Zehnder Service
51 Inverter gas discharge temperature probe failed Call Zehnder Service
52 Inverter compressor case temperature sensor error Call Zehnder Service
53 Inverter compressor driver PFC error Call Zehnder Service
54-63 Inverter Reserved for future use -
81 Power
Monitor* Power monitor communication error Call Zehnder Service
* only for ComfoClime Q

15 - EN
5 Maintenance and cleaning
It’s strongly recommended to perform a proper maintenance and cleaning, following the messages
appearing in the CAQ display (filters replacement); an accurate overall cleaning must be performed
at least every 2 years by Zehnder service personnel.
It’s mandatory that only authorized personnel can operate on the internal components of the unit.
6 Sales and technical support
6.1 Communication & Documentation
■User’s quick guide
■Installer manual
■Service manual
■User manual
■BIM files
All the above manuals are downloadable scanning this QR-code.
You’ll be redirected to the download page where you can select
among a wide range of languages.
All the manuals can be downloaded also at this link:
https://www.product-registration.zehnder-systems.com/document/comfoclime
6.2 Contacts
For support please contact the local Zehnder Service Team.

Zehnder Service Manual_REV00-03-2023_Subject to change