Zehnder Rittling ComfoAir E 350 User manual

Cooling Ventilation FilteringHeating
ComfoAir E350
Manual for the service engineer
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2 - EN
Foreword
Please read this manual carefully before operating
the unit.
With the help of this manual, you can install, commission
or carry out maintenance on the ComfoAir E in a safe
and optimal manner. The ComfoAir E is hereinafter
referred to as the “unit”. As the unit is subject to
continuous development and improvement, your unit
may differ slightly from the descriptions in this manual.
The following symbols are used in this manual:
Symbol Meaning
Point of attention.
Risk of compromised performance or
damage of the ventilation system.
Risk of personal injury.
CHANGED
SAME
Questions
Contact the importer if you have any questions or wish
to order a new manual or new filters. Contact details:
Information given in the Instructions for the user
General information about the ventilation system.
Warranty and liability conditions.
EC declaration of conformity.
Replacing filters in the unit.
Cleaning the valves/grilles in the ventilation system.
Use of the display on the unit.
Information given in the Manual for the fitter
Fitting conditions.
Information on transport and unpacking.
Commissioning procedures
Installation procedures.
Available controls.
Available accessories.
Information available on the identification plate
Extension Meaning
ComfoAir E Product family name
350 Maximum air capacity: 350 m3/h.
R The dwelling side is installed at the factory as
standard on the right-hand side of the unit.
L The dwelling side is installed at the factory as
standard on the left-hand side of the unit.
VL/VR The unit is supplied by the factory with a
preheater
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 document. In case of disparity, the English text takes precedent.
Zehnder Group Sales International • Zehnder Group Deutschland GmbH
Almweg 34 · 77933 Lahr · Germany
T [phone] •· F [phone]
[email protected] • www.international.zehnder-systems.com
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2 - EN EN - 3
Contents
Foreword .....................................................................................................................................................................................2
1 Safety instructions ........................................................................................................................................................................4
2 Service procedures ......................................................................................................................................................................5
2.1 Overview of the display .........................................................................................................................................................5
2.2 Service menu .......................................................................................................................................................................6
2.3 Explanation of the SERVICE MODE menu ..............................................................................................................................7
2.4 Programming air specifications ..............................................................................................................................................8
2.5 RF controls...........................................................................................................................................................................9
2.6 Explanation of VENTILATION SETTINGS menu .....................................................................................................................10
2.7 Explanation of REPLACE FILTER warning .............................................................................................................................10
2.8 Explanation of ALTITUDE menu............................................................................................................................................10
2.9 Explanation of TEMPERATURE menu ..................................................................................................................................10
2.10 Explanation of FANS menu..................................................................................................................................................10
2.11 Explanation of UNIT SPECIFICATION menu .........................................................................................................................11
2.12 Explanation of the BALANCE SETTING menu.......................................................................................................................11
2.13 Explanation of ANALOGUE 0-10 V menu (standard) and RF SETTING (optional) ....................................................................11
2.14 Explanation of the PREHEATER menu .................................................................................................................................11
2.15 Explanation of the SYSTEM TEST menu ..............................................................................................................................12
2.16 Explanation of RESTORE TO FACTORY SETTINGS menu ....................................................................................................12
2.17 Explanation of control methods............................................................................................................................................12
3 Technical specifications...............................................................................................................................................................14
3.1 Service parts ......................................................................................................................................................................16
3.2 Connection diagram ...........................................................................................................................................................17
3.3 Dimension sketch ...............................................................................................................................................................19
4 Maintenance procedures ............................................................................................................................................................20
4.1 Procedure for opening the unit ............................................................................................................................................20
4.2 Maintenance of the casing ..................................................................................................................................................21
4.3 Maintenance of the heat exchanger.....................................................................................................................................21
4.4 Maintenance of the bypass flaps .........................................................................................................................................22
4.5 Maintenance of the fans......................................................................................................................................................23
4.6 Maintenance of the preheater..............................................................................................................................................24
4.7 Maintenance of the condensation drain: ..............................................................................................................................25
4.8 Maintenance of the air ducts ...............................................................................................................................................25
4.9 Procedure for completing maintenance................................................................................................................................25
5 Malfunction procedures ..............................................................................................................................................................26
5.1 Malfunction alerts on the display of the unit ..........................................................................................................................26
5.2 Access to the control PCB..................................................................................................................................................27
5.3 Changing the installation position of the preheater ...............................................................................................................27
5.4 Access to the T11/T20 sensor............................................................................................................................................28
5.5 Access to the T12/T21/T22 sensor.....................................................................................................................................29
5.6 Resetting errors ..................................................................................................................................................................29
5.7 Carrying out a system test...................................................................................................................................................29
5.8 What to do if a malfunction alert occurs (problem solving) .....................................................................................................30
5.9 What to do if a malfunction (or problem) occurs without error alert (problem solving)...............................................................35
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4 - EN
1 Safety instructions
■Always comply with the safety
regulations in this document. Failure
to comply with the safety regulations,
instructions, warnings and comments
may lead to personal injury or damage
to the unit.
■Always observe the local building,
safety and installation guidelines of the
municipality, utility companies or other
authorities;
■Always connect air ducts with a
minimum length of 900 mm to the unit
before connecting the power supply to
prevent contact with the rotating fans.
■After installation, all parts that could
lead to personal injury are safely out of
reach behind the casing. The ComfoAir
cannot be opened without using tools.
■It is not permitted to modify the unit
or any of the specifications contained
in this document. This may result in
personal injury or reduced ventilation
system performance.
■Installation, commissioning and
maintenance must be carried out by
a certified person or company, unless
stated otherwise. If this work is carried
out by unauthorised persons, it may
result in personal injury or reduced
performance of the ventilation system.
■Always unplug the power cord before
starting any work on the unit. Using the
unit with the casing open may result in
personal injury. In this case, make sure
that no conductive or rotating parts can
be touched.
■Static charge can damage the
electronics. When working with
electronics, always take protective
measures to prevent electrostatic
discharge, such as wearing an antistatic
wristband.
■If the power cord is damaged, it must
be replaced by the manufacturer, the
service engineer or a qualified person to
avoid risks.
Power supply diagram
PE (YELLOW-GREEN)
N* (BLUE)
L*, BROWN, LOW PRESET
BLACK*, MEDIUM PRESET
GREY*, HIGH PRESET
* Disconnect these poles for servicing
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4 - EN EN - 5
2 Service procedures
2.1 Overview of the display
The unit has a touchscreen display for readout and
programming the unit.
Main screen of display
C
DA
B
Menu screen of display
G
H
E
N
F
I
J
M
L
K
# Explanation
A Current airflow:
■No icon = No ventilation
■= LOW SETTING;
■= MEDIUM SETTING;
■= HIGH SETTING;
B Current status:
■Green = The unit is operating correctly;
■Orange = Replace filters;
■Red = Malfunction.
C Child lock is engaged.
D Icon for activating the menu screen.
E Icon for activating the comfort temperature menu.
F Icon for activating the filter replacement menu.
G Icon for activating the error readout menu.
H Icon for activating the installer/service menu.
I Arrow up:
■Increase value;
■To previous error alert.
J Arrow down:
■Decrease value;
■To next error alert.
K Selection check box for activating the text shown.
Any changes are saved.
L Arrow to return to the previous screen.
Any changes are NOT saved.
M Identification menu for the fitter / service engineer.
N Icon for activating the option menu.
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2.2 Service menu
The service menu lists all the steps required for
commissioning the unit and tracing the causes of any
malfunction.
The service menu is protected by a password (4210)
that remains active for at least 15 minutes. Each number
of the password must be entered individually with the
arrow keys and confirmed with the confirmation key.
Menu structure SERVICE MENU
Login code: 4210
FILTER ALERT
ALTITUDE
VENTILATION SETTINGS
TEMPERATURE (Readout)
HIGH SETTING
OUTDOOR AIR TEMPERATURE
MEDIUM SETTING
EXHAUST AIR TEMPERATURE
LOW SETTING
EXTRACT AIR TEMPERATURE
FANS (Readout)
SUPPLY AIR TEMPERATURE
SUPPLY FAN [RPM]
FIREPLACE MODE (YES/NO)
PREHEATER TEMPERATURE
EXHAUST FAN [RPM]
BALANCE SETTING
SERVICE MODE
SUPPLY FAN [%]
UNIT SPECIFICATION
EXHAUST FAN [%]
ORIENTATION
SUPPLY FAN [m3/h]
TYPE
EXHAUST FAN [m3/h]
VERSION [SW]
BALANCE SETTING
RF SETTING
ANALOGUE 0-10 V
ACTIVATION
ACTIVATION
METHOD
METHOD
SETPOINT (SET)
SETPOINT (SET)
MIN. SETTING (CONTROL)
MIN. SETTING (CONTROL)
MAX. SETTING (CONTROL)
MAX. SETTING (CONTROL)
P VALUE (SET)
P VALUE (SET)
I VALUE (SET)
I VALUE (SET)
CONTROL
READOUT
SYSTEM TEST
CONTROL
READOUT
PREHEATER
FACTORY RESET
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6 - EN EN - 7
2.3 Explanation of the SERVICE MODE menu
To enable maintenance of the unit, it is fitted with a
SERVICE MODE. By activating this mode, the basic
functions of the unit are deactivated and the bypass
valves of the heat exchanger are removed. To prevent
electrically charged parts being touched, the power
must still be manually disconnected from the unit
after setting the SERVICE MODE. Once the power
is reconnected to the unit, the SERVICE MODE will
be deactivated automatically. Also the service menu
password will have to be re-entered.
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8 - EN
2.4 Programming air specifications
1 2 3
Close all windows and doors.
Open all valves connected to the ventilation
system via the ducts.
Connect the device to the mains.
Select a language and confirm that the siphon is
mounted correctly. Check the above illustration
for more information about the installation of the
siphon.
Go to the settings for the installer.
(MENU > Login; Login code= 4210
45
The fans will automatically start rotating
to the set position. The unit is in the
commissioning mode for one hour.
6Example of a flow meter
Set the required total air flow to the maximum
flow rate. (MENU>Login>VENTILATION
SETTINGS>HIGH SETTING)
= Air flow almost at limit value
= Air flow insufficient
If the limit value is lower than the desired air
flow, a further system test must be carried out.
(MENU>Login>SYSTEM TEST) For more
information, see chapter 2.15.
Press to switch the commissioning mode off
again directly without saving the value entered.
Press to save the value entered.
REPEAT THESE STEPS FOR THE MEDIUM AND
LOW SETTINGS
Measure the air flow at each opened valve using
a flow meter.
Write down the air flow for these valves.
Adjust the opened valves to the required air flow
per room.
Measure the air flow again at each opened valve
using a flow meter.
Check that the air flow complies with the
standard for each opened valve.
78 9
If the air flow is fine everywhere:
Press to exit the commissioning mode.
Complete an installation/test report. An example
can be found in the back of the user manual.
The unit’s installation height must be specified in
the “ALTITUDE” menu.
(MENU>Login>ALTITUDE>)
In the menu BALANCE SETTING an unbalance
between supply and exhaust air can be set.
(MENU>Login>BALANCE SETTING>BALANCE
FINE TUNE)
BALANCE SETTING selection: ‘+’= more
exhaust air; ‘-’= less exhaust air.
With the FIREPLACE MODE setting activated,
only less exhaust air (=’-’) is possible.
FROST PROTECTION selection (without
preheater):
(BALANCE SETTING>FIREPLACE MODE)
■FIREPLACE MODE active? YES: (Default)
Exhaust and supply air remain in balance at all
times. As a result, the unit switches off faster
in frost mode than in inactive fireplace mode.
■FIREPLACE MODE active? NO: There is more
supply air than exhaust air. So in frost mode,
ventilation is maintained longer.
Malfunctions of the preheater or bypass can only be reset after the system test has been carried out again.
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8 - EN EN - 9
2.5 RF controls
To enable the use of RF controls, the unit needs to be equipped with an RF PCB. The RF PCB has to be ordered separately
and can be installed later on.
1 2 3
If RF ACTIVATION is set to ON: Set the
RF ACTIVATION on the display of the
unit to OFF. (MENU>SERVICE MENU>RF
SETTING>ACTIVATION>OFF)
The power will now be removed from the RF
PCB.
Set the RF ACTIVATION on the display of
the unit to ON. (MENU>SERVICE MENU>RF
SETTING>ACTIVATION>ON)
You now have 10 minutes to register the RF
control.
Set METHOD on the display of the unit to
DISCRETE CONTROL (MENU>SERVICE
MENU>RF SETTING>METHOD>DISCRETE
CONTROL)
4
≥ 6 sec.
CHANGED
SAME
#1
RFZ: Press button “1” & and button “ ”
together for at least 6 sec.
The airflow rate of the unit changes (see the
unit's display): Registering successful.
The airflow rate of the unit does not change (see
the unit's display): Return to step
1.
Each RF control must be registered separately.
For each extra RF control, return to step 1.
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10 - EN
2.6 Explanation of VENTILATION SETTINGS
menu
The building regulations describe how much fresh
supply air must be provided to each room. The
VENTILATION SETTINGS must be programmed in such
a way that the unit can supply the maximum necessary
volume of fresh air for the entire building. If only HIGH
SETTING is programmed, the unit will automatically
set MEDIUM SETTING to 66% of HIGH SETTING, and
LOW SETTING to 33% of HIGH SETTING. If MEDIUM
SETTING or LOW SETTING is programmed, this
automatic link will be lost. To recover the link, all the
unit's FACTORY SETTINGS must be restored via the
FACTORY RESET function.
FACTORY SETTINGS
ComfoAir E 350
HIGH SETTING 315 m3/h
MEDIUM SETTING 205 m3/h
LOW SETTING 105 m3/h
Once the settings screen or valve setup screen is visible,
the unit switches off all automatic programmes and runs
on the set value so that all valves can be properly set.
After touching the screen, you have 60 minutes to set all
valves. The unit then switches back automatically to the
normal operating mode and the main screen. Every time
the screen is touched, the 60-minute timer is reset. If the
settings screen or valve setup screen is exited manually,
the unit returns directly to the normal operating mode
and after 15 minutes without being touched the unit
returns automatically to the main screen.
2.7 Explanation of REPLACE FILTER warning
The filter warning appears by default 21 days before the
filters need to be replaced. This gives the user enough
time to purchase new filters before the dirty filters are
to be replaced. It is possible to set the alert to appear
earlier by increasing the number of filter order days in
the service menu FILTER ALERT. The filters must be
replaced at least once every 180 days.
2.8 Explanation of ALTITUDE menu
This value compensates for the influence of altitude on
the air volume. In the “Altitude” menu, the altitude of the
installation location of the unit must be specified.
2.9 Explanation of TEMPERATURE menu
The unit is equipped with 5 temperature sensors. The
readout of the current value of these sensors appears in
the TEMPERATURE menu in the sequence given below.
Meaning
OUTDOOR AIR
TEMPERATURE
(TEMP SENSOR 20)
Outdoor air temperature prior to
the preheater
EXHAUST AIR TEMPERATURE
(TEMP SENSOR T12)
Exhaust air temperature
EXTRACT AIR TEMPERATURE
(TEMP SENSOR T11)
Extract air temperature
SUPPLY AIR TEMPERATURE
(TEMP SENSOR T22)
Supply air temperature
PREHEATER TEMPERATURE
(TEMP SENSOR T21)
Outdoor air temperature after the
preheater.
2.10 Explanation of FANS menu
The unit is equipped with 2 fans. The readout of the
current value of these fans appears in the FANS menu in
the sequence given below.
Meaning
SUPPLY FAN [RPM]
(FAN 22)
Speed of the supply fan.
EXHAUST FAN [RPM]
(FAN 12)
Speed of the exhaust fan.
SUPPLY FAN [%]
(FAN 22)
Control percentage (fan duty) of
the supply fan.
EXHAUST FAN [%]
(FAN 12)
Control percentage (fan duty) of
the exhaust fan.
SUPPLY FAN [m3/h]
(FAN 22)
Airflow rate (flow) of the supply
fan.
EXHAUST FAN [m3/h]
(FAN 12)
Airflow rate (flow) of the exhaust
fan.
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