MTD MTD-ERV 350 Specifications

™
MTD-ERV 350 / 365
Installation &
Operating Manual
All rights reserved.
This manual has been produced with the greatest care and attention.Nevertheless, the publisher accepts no liability for damage resulting from missing or incorrect information in this manual.
II
Table of Contents
1
INTRODUCTION ............................................................................................................................. 1
1.1 Foreword .................................................................................................................................. 1
1.2 CE Symbol ............................................................................................................................... 1
1.3 Warranty and Liability ............................................................................................................. 1
1.3.1 General ..................................................................................................................... 1
1.3.2 Warranty Terms......................................................................................................... 1
1.3.3 Liability ...................................................................................................................... 1
1.4 Safety........................................................................................................................................ 2
1.4.1 Safety Precautions.................................................................................................... 2
1.4.2 Safety Installations and Safety Measures ................................................................. 2
1.4.3 Symbols Used .......................................................................................................... 2
2
INSTRUCTIONS FOR THE USER .................................................................................................. 3
2.1
Definition of Terms ............................................................................................................. 3
2.1.1 Balanced Ventilation ................................................................................................. 3
2.1.2 Heat Recovery .......................................................................................................... 3
2.1.3 Bypass for Free Cooling ........................................................................................... 3
2.1.4 Frost Protection ........................................................................................................ 3
2.1.5 Chimney Sweep Control ........................................................................................... 3
2.1.6 Moisture Recovery (Option) ...................................................................................... 4
2.2
Available Operating Aids ................................................................................................... 4
2.2.1 CC Ease Operating Unit ........................................................................................... 4
2.2.2 3-position Switch (Option) ........................................................................................ 5
2.2.3 Bathroom Switch (Option) ........................................................................................ 6
2.3
Use of the CC Ease Operating Unit .................................................................................. 6
2.3.1 Setting Date and Time .............................................................................................. 6
2.3.2 Reading and Setting Comfort Temperature .............................................................. 6
2.3.2 Reading and Setting Ventilation Level ...................................................................... 7
2.3.4 Switching Extractor Hood On and Off (Option)* ....................................................... 8
2.3.5 Switching Supply and Exhaust Air Fan On and Off .................................................. 8
2.3.6 Setting Ventilation Programme ................................................................................. 9
2.3.7 Setting Additional Functions via the P Menus ........................................................ 10
2.4
Use of the Switch(es) (Option) ........................................................................................ 13
2.4.1 Setting Ventilation Using 3-position Switch(es)....................................................... 13
2.4.1 Setting Ventilation Using Bathroom Switch(es)....................................................... 13
2.5
Service by the User .......................................................................................................... 13
2.5.1 Cleaning or Replacing Filters ................................................................................. 14
2.5.2 Cleaning Valves (in the Home) ............................................................................... 15
2.6
Malfunctions ..................................................................................................................... 15
2.6.1 Malfunction indication on the CC Ease Display ...................................................... 15
2.6.2 3-position Switch with Malfunction LED .................................................................. 15
2.6.3 What to Do in the Event of a Malfunction? ............................................................. 16
2.7 End of Service Life ................................................................................................................ 16
Table of Contents III
3
4
FUNCTION OF THE SYSTEM ...................................................................................................... 17
3.1
Components of the Balanced Ventilation System ......................................................... 17
3.2
Controlled Ventilation System......................................................................................... 17
3.3
MTD-ERV 350 .................................................................................................................... 18
3.4
Additional Options ........................................................................................................... 19
3.4.1 Ventilation via Extractor Hood* ............................................................................... 19
3.4.2 Preheater in MTD-ERV 350 ................................................................................... 20
3.4.3 Post-heater* in Duct System ................................................................................... 20
3.4.4 CO2 Sensor* in the Home ...................................................................................... 21
3.4.5 RH Sensor* in the Home ........................................................................................ 21
3.4.6 Underground Geothermal Heat Exchanger*........................................................... 22
3.4.7 Chimney Sweep Control ......................................................................................... 22
3.5
Technical Specifications ................................................................................................. 23
3.6
Dimension Sketch ............................................................................................................ 25
INSTRUCTIONS FOR THE INSTALLER ...................................................................................... 26
4.1
Preconditions for Installation ......................................................................................... 26
4.2
Installation of the MTD-ERV 350 ..................................................................................... 26
4.2.1 Transport and Unpacking ........................................................................................ 26
4.2.2 Checking the Scope of Supply................................................................................ 26
4.3
Wall Mounting ................................................................................................................... 27
4.3.1 Connection of the Air Ducts .................................................................................... 27
4.3.2 Connection of the Condensation Drain ................................................................... 27
4.4
Commissioning the MTD-ERV 350 ................................................................................. 28
4.5
Setting the Air Specifications ......................................................................................... 34
4.6
Maintenance by the Installer ........................................................................................... 34
4.6.1 Inspection of Heat Exchanger and Fans ................................................................. 34
4.6.2 Filter Cleaning, if Preheater is Fitted ...................................................................... 36
4.7
Malfunctions ..................................................................................................................... 37
4.7.1 Malfunction Indications on the CC Ease Display .................................................... 37
4.7.2 Malfunction Indications on the CC Ease Display ‡ Remedy ................................. 38
4.7.3 Malfunctions (or Problems) without Indications ...................................................... 43
4.8
Spare Parts ....................................................................................................................... 44
4.9
Wiring Diagram: MTD-ERV 350 – LEFT-HAND Standard Version ................................. 45
4.10
Wiring Diagram: MTD-ERV 350 – LEFT-HAND Luxury Version .................................... 46
4.11
Wiring Diagram: MTD-ERV 350 – RIGHT-HAND Standard Version............................... 47
4.12
Wiring Diagram: MTD-ERV 350 – RIGHT-HAND Luxury Version .................................. 48
4.13
EC Declaration of Conformity ......................................................................................... 49
IV Table of Contents
I
1 Introduction
This chapter contains general information on the MTD-ERV 350.
1.1
Foreword
Apart from this general chapter, this operating manual consists of:
• A section for the user,
• A section with technical specifications, and …
• A section for the installer.
Read this operating manual carefully before putting the unit into operation.
- User  Chapters 1 to 3.
- Installer  Chapter 4.
This operating manual contains all the information
required for safe and optimum installation, operation and maintenance of the MTD-ERV 350. In addition, it should serve you as a reference manual
during service work so that this can be carried
out safely and responsibly. The unit is subject to
ongoing improvement and further development.
Your MTD-ERV 350 may therefore differ slightly
from the descriptions in this operating manual.
NOTE:
This manual has been produced with the
greatest care and attention. However, no
rights can be derived from this. Furthermore,
the company reserves the right to change the
contents of this operating manual at any time
without prior notification.
1.2
CE Symbol
The unit is marketed under the name MTD-ERV 350.
The MTD-ERV 350 is a balanced ventilation system
with heat recovery for healthy, balanced and energy-saving ventilation of living premises.
The year of construction of the MTD-ERV 350 is
shown on the identification plate of the ComfoAir
350.
1.3
Warranty and Liability
1.3.1 General
Our “General Terms and Conditions” in their latest
wording apply to the MTD-ERV 350. The warranty
period begins with commissioning, but not later
than one month after delivery. This applies to material replacement and does not include labour. It
applies only on proof of maintenance having been
performed by a specialist company in accordance
with our instructions.
1.3.2 Warranty Terms
The manufacturer's warranty on the MTD-ERV 350
is for a period of 24 months after installation, but up
to a maximum of 30 months after the date of manufacture of the MTD-ERV 350.Warranty claims can be
made only for material flaws and/or design errors
discovered during the warranty period. In the event
of a warranty claim, the MTD-ERV 350 must not be
dismantled without the prior written authorisation
of the manufacturer. The manufacturer's warranty
covers spare parts only if these have been installed
by an installer approved by the manufacturer.
The warranty will be voided if:
•
•
•
•
The warranty period has expired;
The unit is operated without filter;
Parts not supplied by the manufacturer are installed;
Unauthorised changes or modifications are
made to the unit.
1.3.3 Liability
The MTD-ERV 350 has been developed and manufactured for use in "balanced ventilation systems".
Use in any other way does not constitute an 'intended use' and can result in damage to the MTD-ERV
350 or in personal injury for which the manufacturer
accepts no liability.
The manufacturer accepts no liability for damage or
injury resulting from the following causes:
•
•
•
•
Failure to observe the safety, operating and
maintenance instructions contained in this operating manual.
Installation of spare part not supplied by the
manufacturer.
The responsibility for the use of such spare
parts lies solely with the installer.
Normal wear.
Introduction
1
I
1.4
Safety
1.4.1 Safety Precautions
Observe the safety precautions given in this operating manual at all times. Failure to observe the safety
precautions, warnings, comments and instructions
can result in personal injury or damage to the MTDERV 350.
Only an approved installer is authorised to install,
connect, commission and service the MTD-ERV 350
in a way other than that described in this operating
manual.
•
•
•
•
•
•
•
•
2
Introduction
The MTD-ERV 350 must be installed in accordance with the general local building, safety and
installation regulations of the responsible public utility and other relevant safety authorities
(such as the GIW - Dutch Institute for Certified
Builders).
Follow the safety precautions, warnings, comments and instructions given in this operating
manual at all times.
Store this operating manual in the vicinity of
the MTD-ERV 350 at all times during its whole
service life.
The instructions on the regular cleaning and/
or changing of the filters and air inlet/outlet
valves must be strictly observed
The specifications contained in this document
must not be altered.
All modifications to the MTD-ERV 350 are strictly forbidden.
The MTD-ERV 350 is not suitable for connection
to an AC power supply.
In order to ensure that the unit is inspected at
regular intervals, we recommend that the user
concludes a service contract.Your supplier can
provide you with the addresses of authorised
installers in your vicinity.
1.4.2 SafetyInstallationsandSafetyMeasures
•
•
The MTD-ERV 350 cannot be opened without
the use of tools.
It must not be possible to touch the fans with
your hand. An air duct must therefore be connected to the MTD-ERV 350. The minimum
duct length is 900 mm.
1.4.3 Symbols Used
The following symbols are used in this operating
manual:
Caution!
Danger of:
- Damage to the unit, or
- Physical injury to the user, or
- Impairment of the operating of the
unit
if the instructions are not correctly
followed.
2
2.
Instructions for the User
This chapter describes how you should use the MTD-ERV 350.
Congratulations, you are now the owner of
the MTD-ERV 350,
the heat recovery unit from Zehnder Comfosystems. We wish you every comfort.
2.1
Definition of Terms
The MTD-ERV 350 has the following functions:
• Balanced ventilation.
• Heat recovery.
• Bypass for free cooling.
• Frost protection.
• Chimney sweep control.
• Moisture recovery (option).
These terms/properties are described in more detail
briefly in the following sections.
2.1.1 Balanced Ventilation
The MTD-ERV 350 is a balanced ventilation system.This is the most economical and balanced
form of ventilation for homes. In a balanced
ventilation system, polluted air from kitchen,
bathroom, toilet and possibly even store room
is drawn off and replaced by an equal volume
of fresh air in the living room and bedroom. Air
gaps under the doors ensure good air circulation in the home. This air circulation is literally
balanced.
Ensure that these gaps are not covered
by, for example, rubber door seal strips
or high-pile carpets. This would prevent
the system from operating optimally.
2.1.2 Heat Recovery
Apart from ensuring the right balance between supply and exhaust air, the MTD-ERV 350 also offers the
advantage that the heat from the exhaust air is given
off to the fresh, generally cooler outside air. This is
made possible by the integral heat exchanger. In
this way, roughly 95% of the discharged heat is recovered. The supply air can enter the rooms almost
at room temperature. Draughts are now a thing of
the past.
2.1.3 Bypass for Free Cooling
Apart from transferring heat from the exhaust air
to the fresh, generally cooler outside air, the MTDERV 350 also offers the possibility of discharging
the warmer exhaust air directly into the atmosphere
without passing through the heat exchanger.This is
made possible by the integral bypass.The bypass is
an additional circulating air duct that (temporarily)
interrupts the heat transfer between the exhaust air
and supply air. The cool outside air is then not preheated before it enters the dwelling.
The bypass is used particularly on warm days dur-
ing the summer months. Admitting the cool night
air on warm days allows the room temperature in
the home to be reduced.The bypass functions automatically. You simply have to set your comfort temperature. See section 2.3.2 for further information.
The MTD-ERV 350 then maintains this temperature
as closely as possible.
Ensure that the comfort temperature
in winter is not set below the temperature you prefer.
If the comfort temperature in winter is
below the preferred temperature, it is
possible for the heating to be switched
on with the bypass open. That is a waste
of energy.
2.1.4 Frost Protection
The MTD-ERV 350 also has a frost protection system.
This protects the heat exchanger (or the optional
combined heat and moisture exchanger, see section 2.1.6) from freezing. The risk of freezing exists
in the winter months with moderate to heavy frost.
The MTD-ERV 350 is equipped as standard with an
automatically activated frost protection system that
- when there is a risk of frost - temporarily
reduces the supply of outside air so that condensation in the exchanger cannot freeze.A preheater can
also be installed in the MTD-ERV 350 as an option.
This has the advantage that the balanced ventilation
then remains operational. The inlet of cold outside
air then no longer needs to be reduced. In addition,
this option offers greater comfort as the supply air is
again preheated to more or less room temperature.
If there is no preheater installed in your MTD-ERV
350, ask your installer about the possibilities.
2.1.5 Chimney Sweep Control
The MTD-ERV 350 also has a chimney sweep control
system.This is a system that prevents the MTD-ERV
350 from creating an imbalance in the ventilation
system, i.e. between the supply and exhaust air.
The chimney sweep control system functions automatically.This system blocks or resets other ventilation control systems that could possibly create an
imbalance in the ventilation system and that can be
automatically switched on and off by the software.
One example of this is that the supply and exhaust
air fans cannot be switched off separately when the
chimney sweep control system is active.
The chimney sweep control system is employed in
dwellings with open fire, as here air can be drawn
back by the draught of the chimney. If problems
occur with the smoke discharge via the draught of
the chimney, this situation must on no account be
caused (or exacerbated) by the MTD-ERV 350. The
chimney sweep control system then interacts with
the existing ventilation control systems in such a
way that the MTD-ERV 350 cannot (or can no longer)
cause an imbalance in the ventilation system.
Instructions for the User
3
2
2.1.6 Moisture Recovery (Option)
In addition to the heat transfer from the exhaust air
to the fresh, generally cooler outside air, the MTDERV 350 also offers the possibility of transferring
part of the moisture of the exhaust air to the fresh,
generally dryer outside air. This is made possible
by the (optional) integral moisture exchanger. The
moisture exchanger is supplied as a combined heat
and moisture exchanger and is not installed as an
additional exchanger alongside the heat exchanger
of the MTD-ERV 350.This exchanger then has an additional function, i.e. recovering moisture in addition
to the recovery of heat. In this way, up to 65% of the
moisture is recovered from the exhaust air.The supply air can thus enter the rooms with an increased
moisture content.
2.2.1 CC Ease Operating Unit
The MTD-ERV 350 is operated using the CC Ease operating unit.
The CC Ease (= Comfort Control Ease) operating unit
is installed on the wall in the living room and communicates from there with the MTD-ERV 350.
The MTD-ERV 350 is equipped as
standard with only a heat exchanger.
The exchanger with combined heat and
moisture recovery can be ordered as an
option.
2.2
Available Operating Aids
The MTD-ERV 350 is equipped with the following
operating aids:
• CC Ease operating unit of the MTD-ERV 350.
• Position switch (option) for setting the ventilation levels.
• Bathroom switch (option) for temporarily setting the highest ventilation level.
These operating aids are described in more detail
briefly in the following sections.
4
Instructions for the User
The next section describes briefly what information
can be read off.
2
Day and time
Air supply and/or air
exhaust OPEN or CLOSED
Automatic or
manual ventilation
Geothermal heat recovery,
post-heater and/or
bypass on
Warning to replace internal (I)
or external (E) Filter
Actual ventilation position
(with activated extractor
hood, if applicable)
Comfort temperature setting
(also indicates whether
system is heating or cooling)
The CC Ease operating unit has various keys for operating and setting the MTD-ERV 350.These keys are explained
below.
This key is used to switch the extractor hood on or off.
- Press for less than 1 second! ON.
- Press for longer than 1 second! OFF.
This key is used to switch the supply and/or discharge of air on or off.
- Press once! SUPPLY OFF (and EXHAUST ON).
- Press twice! SUPPLY and EXHAUST OFF.
- Press three times! EXHAUST OFF (and SUPPLY ON).
- Press four times! SUPPLY and EXHAUST ON.
This key allows you to read off or set the comfort temperature.
- Press for less than 1 second! READ OFF.
- Press for longer than 1 second ! SET.
This key allows you to switch from AUTO to MANUAL ventilation.
- Press for less than 1 second ! Set ventilation programme.
- Press for longer than 1 second! Set date and time.
These keys allow two functions to be set:
- In AUTO ventilation  Select the ventilation level.
- In MANUAL ventilation  Enter the setting values.
2.2.2 3-position Switch (Option)
Ventilation with the MTD-ERV 350 can also be operated by means of a 3-position switch.
Type 1
Type 2
A 3-position switch can be used to set the ventilation
levels of the MTD-ERV 350. One or more 3-position
switches can be installed in a home (for example, in
the kitchen). The exact version may differ slightly
from the images above. The following switch types
are available:
• Type 1 Standard 3-position switch.
• Type 2 3-position switch with LED for malfunction and filter indication.
• Type 3 Wireless 3-position switch with:
LED for malfunction and filter indication.
Auxiliary switch: position 3 is activated for a given time (2 possibilities for setting the time).
Type 3
Instructions for the User
5
2
2.2.3 Bathroom Switch (Option)
Ventilation with the MTD-ERV 350 can also be operated by means of a bathroom switch.
A bathroom switch can be used to temporarily
set the highest ventilation level of the MTD-ERV
350. This switch can be installed in the bathroom,
for example, for discharging excess moisture as
quickly as possible after showering. As the bathroom switches can have very different designs,
no switch is illustrated here.
If desired, the user can also enter an activation
and deactivation delay for the bathroom switch
via the CC Ease operating unit (see section
2.3.7). This allows the user to specify, for example, that the MTD-ERV 350 switches to the highest ventilation level 5 minutes after the bathroom
switch is activated and then returns to the normal
(or originally set) ventilation level automatically
after 20 minutes.
In many cases, however, no separate bathroom
switch is installed and the bathroom ventilation
control is integrated into the bathroom light switch.
The MTD-ERV 350 then switches automatically to
the highest ventilation level when the bathroom
light is switched on. The MTD-ERV 350 then returns to the normal (or originally set) ventilation
level as soon as the bathroom light is switched
off. Here again, an activation and deactivation delay can be set via the CCE Ease operating unit.
2.3
Use of the CC Ease Operating Unit
The following functions can be set using the CC Ease
operating unit:
• Reading off and setting date and time.
• Reading off and setting the comfort temperature.
• Reading off and setting the ventilation levels.
• Switching the extractor hood on and off (option)*.
• Switching the supply and exhaust air fans on
and off.
• Setting an individual ventilation programme.
• Setting additional ventilation control functions/options in the P menus.
These functions are described in more detail
briefly in the following sections.
2.3.1 Setting Date and Time
" briefly again.
8. Wait until the minutes, e.g. " 00 ", start to flash.
9. Select with "
" or "
" the correct min-
utes.
10 Press "
" briefly again to quit the menu.
2.3.2 ReadingandSettingComfortTemperature
Via the CC Ease operating unit it is possible:
v To read off and set the comfort temperature.
The comfort temperature is the temperature at
which the MTD-ERV 350:
(a) Uses the heat exchanger for heat recovery;
(b) Switches on the bypass (hence bypassing
the heat exchanger) to (temporarily) interrupt the
exchange of heat between the exhaust air and
the supply air.
You can read off the comfort temperature, but
also set the desired temperature. The MTD-ERV
350 will then automatically maintain this temperature as closely as possible after setting. The
comfort temperature generally corresponds to
the temperature that you have set on the room
thermostat (of your central heating).
Via the CC Ease operating unit it is possible:
• To set the date and time.
Reading off the comfort
temperature
Proceed as follows:
1. Press "
1. Press for two seconds on "
".
2. Wait until the day, e.g. "Sa", starts to flash.
3. Select with "
4. Press "
" or "
".
2. Wait until the comfort temperature is displayed.
3. Press "
" briefly now to quit the menu.
" briefly.
6. Select with "
Instructions for the User
Proceed as follows:
" the correct day.
5. Wait until the hours, e.g. " 12 ", start to flash.
6
7. Press "
" or "
" the correct hour.
Without pressing the key, the menu is
quit automatically after 30 seconds.
2
Setting the comfort temperature
Proceed as follows:
1. Press for two seconds on "
".
2. Wait until the comfort temperature, e.g. " 20.0 ",
starts to flash.
3. Select the desired comfort temperature with "
" or "
4
Press "
".
" briefly now to quit the menu.
Position 1 ! Low.
- Use for a low ventilation require
ment.
Position 2 ! Normal.
- Use for a normal ventilation requirement.
Position 3 ! High.
- Use this level during cooking,
showering and when additional
ventilation is desired..
As far as the ventilation is concerned,
the MTD-ERV 350 adjusts to the highest
ventilation level set in the dwelling, unless otherwise set in the automatic software control.
The ventilation level can be set as follows:
1. Press "
" to increase the ventilation level.
2. Press "
" to decrease the ventilation level.
2.3.3 ReadingandSettingVentilationLevel
Via the CC Ease operating unit it is possible:
•
To read off and set the ventilation level.
Reading off the ventilation level
The currently set ventilation level, e.g. “2”, is shown
as standard on the CC Ease display. The MTD-ERV
350 normally regulates the necessary ventilation
level automatically. During automatic ventilation,
"AUTO" is shown on the CC Ease display.
During ventilation set by hand, the indication "MANUAL" appears on the CC Ease display.
3. Press "
" to quit the menu.
Setting the ventilation level
You can also set the ventilation level by hand and
thus increase or decrease the level.You have a choice
of 4 ventilation levels. These are:
• Level A ! Absent.
- Use during absence.
In level A, the dwelling is ventilated with
the prescribed minimum air volume.
If level A is set on the CC Ease operating
unit, the 3-position switches cannot be
used.
Instructions for the User
7
2
2.3.4 Switching Extractor Hood On and Off
(Option)*
Via the CC Ease operating unit it is possible:
To switch the extractor hood on and off.
This level can be used in the summer when the
windows are open. The fresh air is then drawn
into the house through the open windows and not
via the supply air valves.
Proceed as follows:
2. Press "
" twice to
switch off the exhaust air fan (and at the
4. Press for two seconds on "
".
5. Wait until the symbol for the extractor hood ap-
same time switch on the supply air fan
again).
pears.
6. Select with "
" or "
" the ventilation
level, e.g. “ 3”.
3. Press "
" three times to
switch on the supply and exhaust air fans
again.
7. Press "
" briefly to switch off the extrac-
tor hood.
After switching off the extractor hood, the symbol
for the extractor hood disappears again from the CC
Ease display.
Note that by switching off the supply or
exhaust air fan, you temporarily have no
balanced ventilation with heat and (if installed) moisture recovery in your home.
2.3.5 SwitchingSupplyandExhaustAirFansOn
and Off
Via the CC Ease operating unit it is possible:
To switch the supply air or exhaust air fan on and
off.
Proceed as follows:
1. Press "
" once to
to switch off the supply air fan.
8
Instructions for the User
Never leave the fans switched off for
longer than 12 hours.
2
2.3.6 Setting Ventilation Programme
Via the CC Ease operating unit it is possible:
To set an individual ventilation programme.
A standard ventilation programme was set on the MTD-ERV 350 during manufacture.
This ventilation programme offers a suitable ventilation pattern for most homes. If you wish, you can adapt this
standard ventilation programme to your own ventilation requirements. For example, for a week and a weekend
programme.
Weekday fan
position
Weekend fan
position
The ventilation programme can be set/changed
as follows:
1. Press simultaneously for two seconds on "
" and "
".
This functions only with ventilation set
to "AUTO".
The number of the switching moment
flashes in the bottom right-hand corner.
2. Wait until the day appears.
3. Program the desired days or a sequence of
days.
–
Select the desired day/days with "
" or "
".
You have the following choices:
–
Sequence of days: “SaSu”.
–
Sequence of days: “MoTuWeThFri”.
–
Sequence of days: “SaSuMoTuWeThFri”.
–
Individual days: “Sa”, “Su”, “Mo”, “Tu”, “We”,
“Th” and “Fri”.
–
Select the switching moment by pressing "
–
Press "
" or "
".
" to confirm the switching mo-
ment.
4. Program the starting time for the desired
ventilation level.
–
Press "
–
Select with "
".
" or "
" the desired
time in hours.
Instructions for the User
9
2
2. Wait until "P menu" appears on the display.
" or "
3. Select the desired P menu with "
", e.g. " 2 ".
–
–
–
Press "
" again.
Wait until the minutes, e.g. " 00 " start to
flash.
Select with "
" or "
" the desired
time in minutes.
–
–
–
Press "
" again.
Wait until the ventilation symbol starts to
flash.
Select the desired ventilation level with "
" or "
4. Press "
" to confirm the P menu.
5. Select the desired P sub-menu with "
"
or "
", e.g. " 23 ".
" to confirm the P sub-menu.
6. Press "
Making settings in the P menus
".
The minimum and maximum values for
the available ventilation functions are
stored in the software.
–
Press "
" to store the switching moment.
5. Program the next ventilation programme, if
required.
– Then perform steps 1 to 5 for the next venti
7. Select a new value for the function with "
" or "
".
8. Press "
" to save the value.
9. Repeat steps 5 to 8 to
set several P sub-menus in turn in the same
P menu.
Or
Return to the P menu; press once on
"
lation programme.
" and possibly start again at step 3.
2.3.7 Setting Additional Functions via the
P Menus
Via several P menus of the CC Ease operating
unit you can:
• Read off the status of various ventilation
functions;
• Activate or deactivate time delays for various
ventilation functions;
• Set time delays for various ventilation functions.
In the P menus the user may:
- only set the additional functions P1,
P2 and P9.
The remaining P menus P3 to P8 are reserved for the installer.
Access to the P menus
Proceed as follows:
1. Press "
10 Instructions for the User
" and "
" simultaneously.
Or
Return to the main window
Press "
" twice.
2
Menu P1 ! Status of the functions
Sub-menu
P10
P11
P12
P13
P14
P15
P16
P17
P18
P19
Description
Menu 20 currently active?
Menu 21 currently active?
Menu 22 currently active?
Menu 23 currently active?
[Not available]
Menu 25 currently active?
Menu 26 currently active?
Menu 27 currently active?
Menu 28 currently active?
Menu 29 currently active?
Ventilation functions
Activated / not activated
Yes (1) / No (0)
Yes (1) / No (0)
Yes (1) / No (0)
Yes (1) / No (0)
[Not available]
Yes (1) / No (0)
Yes (1) / No (0)
Yes (1) / No (0)
Yes (1) / No (0)
Yes (1) / No (0)
Menu P2 ! Set time delays
Sub-menu
P20
(Option)*
P21
(Option)*
Description
Deactivation delay for extractor hood
function.
• 'x' minutes after pressing the extractor hood switch, the MTD-ERV 350
returns to the previously set level.
Activation delay for the bathroom
switch (to switch to the HIGHEST LEVEL).
• 'x' minutes after turning on the
bathroom switch, the MTD-ERV 350
switches to the HIGHEST LEVEL.
Time delay values
Minimum Maximum Default
setting
0 Min.
180 Min. 30 Min.
0 Min.
Note:
Only for systems with wired
switch and only if your system is
equipped with a second position
switch in the bathroom.
P22
Deactivation delay for the
0 Min.
(Option)*
bathroom switch (to switch to the NORMAL LEVEL).
Note:
• 'x' minutes after turning on the bathOnly for systems with wired
room switch, the MTD-ERV 350 reswitch and only if
turns to the NORMAL LEVEL.
your system is equipped with
a second position switch in the
bathroom.
P23
Deactivation delay
0 Min.
for ventilation position 3.
Note:
• When position 3 (HIGHEST LEVEL) is
Only for systems with a wired
switched on briefly (< 3 seconds), the
position switch.
MTD-ERV 350 remains at this position
for the time set in this menu.
15 Min.
0 Min.
120 Min.
30 Min.
120 Min.
30 Min.
If, within the run-down time, the position switch or the radio remote control
is activated, the MTD-ERV 350 switches
immediately to the set ventilation level.
P24
Filter warning
• Here the user can select when "FILTER
DIRTY" is to appear on the CC Ease
display.
1 week
26 weeks 16 weeks
Instructions for the User 11
2
Deactivation delay
for ventilation position 3 (with "
").
Note:
• When
Only for systems with a remote
"
" is pressed BRIEFLY (< 2 sec.),
control switch.
the MTD-ERV 350 switches to the
HIGHEST LEVEL for ‘x’ minutes and
then switches back automatically to
the set level. ‘x’ can be set between 1
and 20 minutes.
P25
Sub-menu
P26
Note:
Only for systems with a
remote control switch.
P29
(Option)*
Description
1 Min.
20 Min.
10 Min.
Time delay values
Minimum Maximum Default
setting
120 Min. 30 Min.
"). 1 Min.
Deactivation delay for ventilation position 3 (with "
When
"
" is held depressed (> 2 sec.), the MTD-ERV 350
switches to the HIGHEST LEVEL for 'x' minutes and then
switches back automatically to the set level. ‘x’ can be set
between 1 and 120 minutes.
Setting the Levels for the Extractor Hood.
1%
99%
10%
When the extractor hood is switched on, the ventilation
levels for the extractor hood can be set a few percent
higher than the corresponding 'normal' ventilation levels.
Menu P9 ! Status of the functions (from menu P5)
Sub-menu Description
P90
Chimney
sweep control active?
P91
Bypass open (=yes)
/ closed (=no)?
P92
Valve of the geothermal heat
(Option)* exchanger open (=yes)
/ closed (=no)?
P93
Post-heater active?
(Option)*
P94
0 – 10 V control active?
(Option)*
P95
Frost protection
(standard or preheater) active?
P96
Extractor
(Option)* hood control active?
P97
Moisture control active?
12 Instructions for the User
Ventilation functions
Activated / not activated
Yes (1) / No (0)
Yes (1) / No (0)
Yes (1) / No (0)
Yes (1) / No (0)
Yes (1) / No (0)
Yes (1) / No (0)
Yes (1) / No (0)
Yes (1) / No (0)
2
2.4
Use of the Switch(es) (Option)
Leave the MTD-ERV 350 at the highest position for some time after cooking and
showering to remove excess moisture and odours as quickly as possible.
If several position switches are installed in the apartment, the MTD-ERV 350 adjusts
as far as the ventilation is concerned to the highest ventilation position unless
other values are set in an automatic software control.
2.4.1 Setting Ventilation Using 3-position Switch(es)
A 3-position switch allows 3 ventilation levels to be set.
•
•
•
Position 1  Low.
- Use for a low ventilation requirement.
Position 2  Normal.
- Use for a normal ventilation requirement.
Position 3  High.
- Use this level during cooking, showering and when additional ventilation is required.
1
2
3
The CC Ease operating unit allows an additional ventilation level, the absence level, to be
set in addition to these 3 ventilation levels. For further information, see section 2.3.3.
2.4.2 Setting Ventilation Using Bathroom Switch(es)
A bathroom switch allows the MTD-ERV 350 to be temporarily set to the highest ventilation level (position 3):
• Actuate the bathroom switch for maximum ventilation.
• Actuate the bathroom switch again to return to the normal (or previously set) ventilation level.
You can set an activation and deactivation delay for the bathroom ventilation control in P
menus P21 and P22. For further information, see section 2.3.7.
The bathroom ventilation control can also be integrated into the bathroom light switch.
2.5
Service by the User
As user you have to service the MTD-ERV 350 as follows:
• Clean or replace the filters.
• Clean the valves (in the home).
These measures are described in more detail briefly in the following sections.
If these measures are not performed (regularly), there is a danger that the ComfoAir 350
will cease to function correctly.
Instructions for the User 13
2
2.5.1 Cleaning or Replacing Filters
As soon as the corresponding warning appears
on the display of the CC Ease operating unit, the
filters have to be cleaned or replaced.
•
•
“ FILTER I ” ! The internal filters must be
cleaned or replaced.
“ FILTER E ” ! The external filters* must be
cleaned or replaced.
One of the filter indications shown above then appears on the CC Ease display.
B
•
Push the filters (A) back into
the MTD-ERV 350.
•
Insert the plug of the MTD-ERV 350 into the
plug socket again.
•
Press "
" to cancel the filter indication.
For replacement ...
As soon as the filters have to be replaced, proceed
as follows:
The internal filters are supplied as standard with the MTD-ERV 350. The external
filters* form part of the duct system of
the ventilation system and do not belong
to the MTD-ERV 350.
The MTD-ERV 350 is equipped as standard with
two internal filters. The external filters* form part
of the duct system of the ventilation system and
do not belong to the MTD-ERV 350. Should your
ventilation system be equipped with external filters, the monitoring of these filters must be connected to the PCB panel (extended version) of
the MTD-ERV 350.
Monitoring of the external filters* must
be connected to the PCB panel (extended version) of the MTD-ERV 350 by the
installer.
•
Remove the mains plug from the plug socket.
•
Pull the filters (A) out of the MTD-ERV 350.
A
•
A
Remove the clamps (C) holding the two filter
cloths to the filter brackets.
•
Push the filter cloths (D) off the filter brackets
(F).
C
For cleaning ...
You can clean the filters when necessary:
•
Remove the mains plug from the plug socket.
•
Pull the filters (A) out of the MTD-ERV 350.
D
Ensure that the cloth is not damaged by
the corners of the filter bracket.
A
•
A
Clean the filters (B) using a vacuum cleaner.
14 Instructions for the User
Before putting the MTD-ERV 350 into operation the first time, you should clean
the filters (and the valves) because the
ventilation system may have been soiled
with building dust during the building
phase.
2
Push the new filter cloths (E) over the filter
•
Ensure that you ALWAYS install all the
valves in exactly the same position (and
in the same ventilation slot in the wall
or ceiling) after cleaning, otherwise optimum operation of the ventilation system
cannot be assured.
brackets (F).
•
Fasten the clamps (C) again.
•
Push the filters (A) back into the ComfoAir 350.
The ventilation air is admitted and discharged via
valves. Gaps under the doors in the dwelling ensure that the air circulates in the right direction. In
order to ensure that the right volume of ventilation
air is maintained in the right rooms, pay attention
to the following points:
• Do not seal the gaps.
• Do not change the setting of the valves.
• Do not interchange the valves.
E
F
•
Insert the plug of the MTD-ERV 350 into the
plug socket again.
•
Press "
" to cancel the filter indication.
Replace all filters (at least) once a year.
2.5.2 Cleaning Valves (in the Home)
The ventilation system is equipped with the following valves:
2.6
Malfunctions
A malfunction in the MTD-ERV 350 is displayed as
follows:
• A malfunction indication appears on the display of the CC Ease.
• The malfunction LED on the 3-position switch
lights up.
These measures are described in more detail in the
following sections.
Exhaust air valve (STB)
Exhaust air valve (STV)
Exhaust air valve (STC)
Exhaust air valve (STK)
2.6.1 Malfunction indication on the CC Ease
Display
In the event of a malfunction, a malfunction code
appears on the CC Ease display.The display then always shows an 'A' or 'E' code with the corresponding
numbers. By referring to the overview of malfunctions in section 4.7.1, you can find out what the particular malfunction indication means.
Supply air valve (STH)
These valves have to be cleaned (at least) twice a
year.
• Remove the valve from the wall or ceiling.
• Clean the valve in a warm soap solution.
• Rinse the valve thoroughly and dry it carefully.
• Install the valve again EXACTLY IN THE SAME
POSITION (and IN THE SAME HOLE).
• Repeat this procedure for the other valves.
On the position of the valves ...
The installer has set all the valves so that the ventilation system operates optimally with respect to the
volumetric air flows. Do not therefore change the
setting of the valves.
2.6.2 3-position Switch with Malfunction LED
In the event of a malfunction, 3-position switches
with a malfunction LED start to light up. Depending
on the type of 3-position switch, this takes place in
one of two ways:
• 3-position switch with malfunction LED.
" ! The LED lights up in the event of a malfunction (and in the event of a filter warning).
• Wireless 3-position switch with malfunction
LED.
" ! The LEDs light up as soon as the 3-position switch is used.
The LED lights up
green once to signal that a communication
has been made. In the event of a malfunction or a 'Filter dirty' warning, both LEDs light
up red three times. Finally both LEDs light
Instructions for the User 15
2
up green again.
The malfunction LED on the 3-position
switch lights up not only in the event of
malfunctions, but also in the event of a
'Filter dirty' warning.
2.6.3 What to Do in the Event of a
Malfunction?
In the event of a malfunction, please contact the installer. Note the malfunction code that appears on
the display of the CC Ease operating unit.Also note
your MTD-ERV 350 type.It can be found on the identification plate on the top of the MTD-ERV 350.
The plug must always remain in the plug socket as
long as the MTD-ERV 350 does not have to be shut
down due to a serious malfunction, for filter cleaning or replacement or for some other urgent reason.
If the plug were to be removed from the plug socket,
the dwelling would no longer be mechanically ventilatedandmoistureaswellasfungusproblemscould
occur in the longer term. Avoid at all costs leaving
the MTD-ERV 350 switched off for prolonged periods.
2.7 End of Service Life
Discuss with your supplier what you should do with
your MTD-ERV 350at the end of its service life.If you
cannot return the MTD-ERV 350 to your supplier, do
not simply throw it away; contact your local authorities to find out about possibilities of re-using components or the environmentally safe recycling of the
materials.
• Do not throw the batteries of the wireless
switches into the domestic refuse; dispose of
them at the official waste collection point.
16 Instructions for the User
2
3
Function of the System
This chapter describes the design of the balanced ventilation system and its function in conjunction with the MTDERV 350.
3.1
Components of the Balanced Ventilation System
The complete balanced ventilation system consists of the following components:
·
MTD-ERV 350 with CC Ease operating unit
with software prepared for the connection of
the following options:
- Preheater.
- Enthalpy exchanger (heat and moisture
recovery).
- 3-position switch without malfunction and
filter display or 3-position switch with malfunction and filter display.
- Wireless 3-position switch(es).
- Bathroom switch.
- Sensors with 0 – 10 V control (2x).
·
Duct system.
- Supply and exhaust air duct system.
- Supply and exhaust air valves.
·
Options that can only be connected to the
MTD-ERV 350 Luxury versions.
- Exhausting via extractor hood.
- Post-heater in duct system.
- Sensors with 0 – 10 V control (2x).
- Moisture sensor in living areas of the
dwelling.
- Geothermal heat exchanger.
-Chimney sweep control with pressure
sensor in the chimney.
- Malfunction indication (with signal) (see
wiring diagram).
- ComfoControl Avignon (touch screen
remote control with additional operating
options compared with the CC Ease operating unit).
These components/functions of the ventilation system are described in the following sections.
3.2
Controlled Ventilation System
A balanced ventilation system generally consists of the following elements:
· MTD-ERV 350 (A).
· Duct system for the intake of outside air (B) and the discharge of indoor air (C).
· Air supply valves in the living rooms and bedrooms (D).
· Exhaust air valves in the kitchen, bathroom, toilet and possibly the store room (E).
· Non-powered extractor hood with 3-position switch (F).
B
C
A
D
D
E
D
E
D
E
F
Instructions for the User 17
3
3.3
MTD-ERV 350
The MTD-ERV 350 consists as standard of the following components:
· Outer casing (A) of coated sheet steel.
· Inner lining (B) of high-quality expanded polypropylene (E)PP.
· 4 rotatable air-side connections (C) for the air ducts.
· 2 G3 filters (D) for air filtration.
· 2 energy-saving DC motors (E) with high-speed impeller.
· (High-efficiency) heat exchanger (with optional moisture exchanger) (F) with a thermal efficiency exceeding 95% in which moisture as well as heat is recovered from the exhaust air.
· CC Ease operating unit (G) for reading off data and for settings.
· PCB panel (H2) with connections for the CC Ease operating unit, the enthalpy exchanger and the sensors with 0 - 10 V controller (2x).
· PCB panel (H1) with connections for the fans, bypass, preheater, temperature sensors (T1 to T4), 3-position switch with or without malfunction and filter display (option) and the bathroom switch (option).
· Identification plate (I) with the data on the MTD-ERV 350 (not visible).
· Condensation drain (J) for discharging the condensation from the warm exhaust air.
· Sticker (K) with the air connections (not visible).
· 230 V plug (L).
L
K
I
C
C
H2
C
C
A
D
H1
D
E
F
B
G
J
18 Function of the System
E
3
MTD-ERV 350 Methods of Operation
The MTD-ERV 350 has been designed and produced as a system for controlled ventilation of residential buildings. It
comprises two air flows that hygienically exchange their energy.
E
G
A
I
C
H
Filter
J
F
B
D
·
·
·
·
·
·
·
·
·
·
Polluted air is drawn off by the exhaust air fan (A) from,
for example, the kitchen, toilet and shower (B).
The heat exchanger (C) absorbs the heat from the exhaust air.
The supply air fan (D) draws in fresh air from outside (E).
The heat exchanger (C) heats up the intaken air using the heat absorbed from the exhaust air.
If a moisture exchanger is installed (option), moisture is also transferred from the exhaust air to the supply air (for further information, see section 2.1.6).
The heated fresh air is delivered into the living rooms and bedrooms (F).
The now cooled polluted air from the kitchen, bathroom and toilet is discharged into the atmosphere (G).
The bypass (H) allows the exhaust air to be discharged to the atmosphere without passing through the
heat exchanger so that no heat is transferred to the fresh air (for further information, see section 2.1.3).
The preheater (I) (option) ensures preheating of outside air so that balanced ventilation with heat recovery is assured even with moderate to severe frost (up to 150 m³/h at -15° C) (for further information, see
section 3.4.2).
The post-heater (J) (option) additionally heats the supply air (after it has already been heated in the heat
exchanger) before it is delivered into the living rooms (for further information, see section 3.4.3).
The balanced ventilation system contributes to energy saving, a healthy room climate and an optimum living climate
and prevents problems with moisture.
3.4. Additional Options
Only for MTD-ERV 350 Luxury versions, with the exception of the preheater that can be installed in any MTDERV 350.
Please refer to the identification plate on the top of the MTD-ERV 350 to determine whether you have
a basic or luxury version of the system.
These are external devices that can be connected to the MTD-ERV 350 Luxury versions (preheater
also to Basic versions).
3.4.1. Preheater in MTD-ERV 350
All MTD-ERV 350 systems with “VV” in the device name (see identification plate on the top of the MTD-ERV
350) are equipped as standard with a preheater. All other MTD-ERV 350 versions can be equipped with a preheater as an option.
The preheater is a heating element that is installed in the outside air duct of the MTD-ERV 350
just upline of the heat exchanger. The preheater
heats the cold outside air before it reaches the
heat exchanger in the event of moderate to severe frost. In this way the heat exchanger is protected against freezing in addition to the standard
frost protection system.
The advantage of the preheater compared with the
standard frost protection system is that balanced
ventilation can be maintained even in the event of
frost. In the event of a frost risk, the intake of out-
Function of the System 19
3
side air no longer has to be temporarily reduced (or
even interrupted for a short time) in order to prevent condensation freezing in the heat exchanger.
Instead the preheater is temporarily switched on.
In addition, this option offers greater comfort as
the supply air is preheated to more or less room
temperature.
The preheater is switched on and off automatically. As soon as the temperature of the outside
air is below 0 oC for a certain period, the air duct
of the preheater is opened and the preheater is
switched on to heat the intaken outside air to at
least 1 oC. Here a temperature sensor in the supply air duct of the MTD-ERV 350 measures the
temperature. This preheating control ensures balanced ventilation up to a maximum of 150 m³/h at
-15 oC. The user cannot influence the automatic
preheater control. The installer has to modify the
preheating control, for example during installation of the MTD-ERV 350, in menu P52 via the CC
Ease operating unit (for further information, see
section 4.4).
The preheater and the corresponding
temperature sensor must be connected
to the PCB panel behind the front panel
of the MTD-ERV 350 by the installer. In
the event of retrofitting, installation instructions are supplied with the installation kit.
3.4.2. Ventilation via Extractor Hood*
An extractor hood can be connected to the MTDERV 350.
This allows moisture (steam) and food odours
to be discharged as quickly as possible via the
ventilation system. For this, the extractor hood
must be connected to the PCB panel (extended
version) of the MTD-ERV 350. The extractor hood
can then be operated via the CC Ease operating
unit of the MTD-ERV 350.
Switching the extractor hood on and off,
see section 2.3.4.
As soon as the extractor hood is switched on
using the CC Ease operating unit, the valve of
the extractor hood opens and the MTD-ERV 350
switches to the 'Extractor hood' function. Ventilation positions 1, 2 or 3 can be set. These ventilation positions for the extractor hood correspond
to the 'normal' ventilation positions. Please note,
however, that these ventilation positions for the
extractor hood are always slightly higher (by x%)
than the 'normal' ventilation positions. The user
can set this x% value himself in menu P29 on the
CC Ease operating unit (see also section 2.3.7).
The following increase values can be selected:
20 Function of the System
In addition to this ventilation via the extractor
hood, a temperature sensor is also installed in
the extractor hood. This temperature sensor
measures the temperature of the air discharged
via the extractor hood. Should this temperature
become too high, i.e. more than 60 oC, the valve
in the extractor hood will close to protect the
MTD-ERV 350 and in particular the heat/moisture
exchanger.
3.4.3 Post-heater* in Duct System
As an option, the ventilation system can also be
equipped with a post-heater.
The post-heater is a heater element that is installed in the duct system of the ventilation system, in other words downstream of the MTD-ERV
Menu P29:
Setting the rate of increase
v
Rate of increase
Minimum
1%
v
Rate of increase
Standard
10%
v
Rate of increase
Maximum
99%
350. The post-heater
ensures that after the
outside air has first
been heated in the
heat/moisture
exchanger of the MTDERV 350, the supply air is additionally
heated before it enters the living rooms.
The advantage of the
post-heater is that the supply air can be directly
admitted to the living rooms at the comfort temperature set for the dwelling. That means additional comfort.
The post-heater is not supplied as standard with the MTD-ERV 350. It is actually
part of the duct system of the ventilation
system and does not belong to the scope
of supply of the MTD-ERV 350.
The post-heater is switched on and off automatically. As soon as the temperature of the supply
air drops below the set comfort temperature, the
post-heater is switched on to heat up the supply air
to the comfort temperature. A temperature sensor
in the duct system measures the temperature of
the supply air immediately behind the post-heater. The user cannot influence the automatic postheater control system. The post-heater reacts to
3
the set comfort temperature. This temperature
can, however, be altered by the user (for further
information, see section 2.3.2). The installer simply has to indicate whether or not a post-heater
has been integrated into the ventilation system
in menu P55 of the CC Ease operating unit during installation of the MTD-ERV 350 (for further
information, see section 4.4).
The post-heater and the corresponding
temperature sensor must be connected
to the PCB panel (extended version) of
the MTD-ERV 350 by the installer.
air fan, and (b) the old air is drawn off faster by the
exhaust air fan. As soon as the CO2 concentration in the house has reached acceptable values
again, the settings of the two fans are gradually
reduced again.
The CO2 sensor must be connected to
the PCB panel in the electronics casing
on the top of the MTD-ERV 350 by the
installer.
3.4.5. RH Sensor* in the Home
A RH sensor can be connected to the MTD-ERV
350.
This RH sensor allows the MTD-ERV 350 to regu-
3.4.4 CO2 Sensor* in the Home
A CO2 sensor can be connected to the MTD-ERV
350.
This CO2 sensor allows the MTD-ERV 350 to
regulate the CO2 concentration in the house. For
this, a CO2 sensor is installed in one of the living
rooms to measure the current CO2 concentration
in the indoor air.
Living space
late the relative humidity in the house. For this, an
RH sensor is installed in one of the living rooms to
measure the current relative humidity of the indoor
air.
If the humidity is too high compared with the set
(and hence highest admissible) humidity, the settings of the supply and exhaust air fans will be
gradually increased to reduce the humidity. Living
rooms with an excessively high humidity, such as
bathrooms during showering, are quickly freed of
the humidity by the additional ventilation. Problems due to high humidity can thus be avoided in
this way. The user can set the maximum admissible humidity (within the given limits) manually in
menu P28 via the CC Ease operating unit (see
also section 2.3.7). The following humidity levels
can be selected:
Living space
Living space
If the CO2 concentration is too high compared
with the set (and hence highest admissible) CO2
concentration, the settings of the supply and exhaust air fans will be gradually increased to reduce the CO2 concentration. In this way the air
in rooms with a high carbon dioxide concentration that can occur, for example, during a party
with a large number of people, can be quickly 'exchanged' by additional ventilation. The user can
set the maximum admissible CO2 content (within
the given limits) himself in menu P27 via the CC
Ease operating unit (see also section 2.3.7). The
following CO2 concentrations can be set:
Menu P27:
Setting CO2 concentration
v CO2 concentration
Minimum
ppm to be decided
v CO2 concentration
Standard
ppm to be decided
v CO2 concentration
Maximum
ppm to be decided
The
starting
point for this
CO2 control is
the assumption
that the outside
air is generally
the fresh(er) air.
The CO2 concentration can
be reduced by
this system in
that (a) fresh air is drawn in faster with the supply
Living space
Menu P28:
Setting the humidity level
v
Humidity level
v
Humidity level
Standard
60%
v
Humidity level
Maximum
100%
Minimum
0%
The starting point
for this humidity
control is the assumption that the
outside air is generally the dry (drier) air. The humidity can be reduced
by this system in
that (a) dry air is
drawn in faster with the supply air fan, and (b) the
humid air is drawn off faster by the exhaust air
fan. As soon as the humidity in the dwelling has
reached acceptable values again, the settings of
the two fans are gradually reduced again.
Function of the System 21
3
The RH sensor must be connected to
the PCB panel in the electronics casing
on the top of the MTD-ERV 350 by the
installer.
3.4.6 Underground Geothermal Heat
Exchanger*
As an option, the ventilation system can also be
equipped with a geothermal heat exchanger.
The geothermal heat exchanger is an additional underground air duct at a depth of at least 1
metre and with a length of 20 to 40 metres that
forms part of the ventilation system. The geothermal heat exchanger allows the outside air to
be admitted to the house under ground instead
of above ground. The heat of the soil is thereby
given off to the outside air as it flows through the
geothermal heat exchanger.
The geothermal heat exchanger is thus an outstanding solution both in winter and in summer.
In frosty weather, the outside air can be heated
by the underground geothermal heat exchanger
before it enters the house via the MTD-ERV 350.
During hot weather in the summer, on the other
hand, the outside air can be cooled by the underground geothermal heat exchanger before it
enters the house via the MTD-ERV 350.
The geothermal heat exchanger functions automatically. A temperature sensor installed anywhere on the outside of the house measures
the temperature of the outside air. As soon as
can modify the automatic control of the geothermal heat exchanger to a slight extent in menu
P61 at the CC Ease operating unit, if necessary.
The geothermal heat exchanger and the
corresponding temperature sensor must
be connected to the PCB panel (extended version) of the MTD-ERV 350 by the
installer.
3.4.7 Chimney Sweep Control
Apart from the chimney sweep control set as
standard in the software, an additional unit can
be connected to the PCB panel (extended version) of the MTD-ERV 350 as an option that can
switch off the fans of the MTD-ERV 350 via a floating contact.
By means of a pressure sensor installed in the
room in which the hearth to be monitored is installed, the unit measures the pressure in the
room with the hearth. The pressure in the room
in which the hearth is installed and the adjacent
rooms must not exceed - 4 Pa so that fumes and
smoke cannot enter the house. At a pressure
higher than - 4 Pa, the fans of the MTD-ERV350
are switched off. Malfunction code "E4" appears
on the display. In this case, please contact the
installation company that installed the pressure
sensor and/or the heating. There is probably a
problem with the discharge of the fumes from the
hearth.
The additional unit and the corresponding pressure sensor do not belong to the
standard scope of supply of the MTDERV 350.
The additional unit and the corresponding pressure sensor must be connected
to the PCB panel (extended version) of
the MTD-ERV 350 by the installer.
The installer cannot influence the automatic chimney sweep control system. It reacts to settings at
the PCB panel (extended version) stored in the
software. The installer simply has to indicate
whether or not a chimney sweep control system
has been integrated into the ventilation system in
menu P50 of the CC Ease operating unit during
installation of the MTD-ERV 350 (for further information, see section 4.4).
the temperature of the outside air is between 0
and 15 oC in winter months and between 10 and
25oC in summer months, the geothermal heat
exchanger is activated to allow the outside air to
flow through the heat exchanger. The user cannot influence the automatic geothermal heat exchanger control system. The installer simply has
to indicate whether or not a geothermal heat exchanger has been integrated into the ventilation
system in menu P60 of the CC Ease operating
unit during installation of the MTD-ERV 350 (for
further information, see section 4.4). The installer
22 Function of the System
3
3.5. Technical Specifications
MTD-ERV 350 nL (normal Air Volume)
Position
Ventilation rate
Absent
at
Low
at
Medium
at
High
at
Maximum
at
Value
Power supply
Supply voltage
Power factor (cos phi)
Noise output supply air fan
Position
Ventilation rate
Absent
at
Low
at
Medium
at
High
at
Maximum
at
Value
Noise output exhaust air fan
Position
Ventilation rate
Absent
at
Low
at
Medium
at
High
at
Maximum
at
Value
Function of the System 23
3
MTD-ERV 350 nL (normal Air Volume)
Position
Ventilation rate
Absent
at
Low
at
Medium
at
High
at
Maximum
at
Value
Power supply
Supply voltage
Power factor (cos phi)
Noise output supply air fan
Position
Ventilation rate
Absent
at
Low
at
Medium
at
High
at
Maximum
at
Value
Noise output exhaust air fan
Position
Ventilation rate
Absent
at
Low
at
Medium
at
High
at
Maximum
at
Value
General specifications of the MTD-ERV 350
HE exchanger material
Inner lining material
Heating capacity
Weight
24 Function of the System
Polystyrene
3
3.6
Dimension Sketch
Function of the System 25
3
4
Instructions for the Installer
This chapter describes how you have to install the MTD-ERV 350.
4.1
Preconditions for Installation
4.2
Installation of the MTD-ERV 350
In order to be able to assess whether the ComfoAir
350 can be installed in a particular room, please pay 4.2.1 Transport and Unpacking
attention to the following points:
• Work carefully when transporting and unpack• The MTD-ERV 350 must be installed in according the MTD-ERV 350.
ance with the local safety regulations and installation instructions of i.a. the public utilities,
Ensure that the packaging materials are
and in accordance with the instructions in this
disposed of in an environmentally favourable
manual.
• The installation location must be selected such manner.
that there is sufficient space around the MTDERV 350 for air connections and for carrying
4.2.2 Checking the Scope of Supply
out maintenance work.
Should you discover any damage or missing parts
• The following installations must be present in
of the supply product, please contact your supplier
the room:
without delay. The scope of supply includes:
- Air duct connections.
• MTD-ERV 350.
- 230 V power supply with fused wall plug
• Check the identification plate to see whether it
socket.
is the correct type.
- Installations for condensation drainage.
• 4 x 45° connection elbows.
• Roof openings must be air and vapour-tight.
• Mounting brackets.
The outside air and exhaust air ducts must be
• Operating Manual.
insulated vapour-tight between the roof/gable
opening and the MTD-ERV 350. This prevents
The MTD-ERV 350 is available in the following
the formation of condensation on the outside
types:
of the ducts.
• The exhaust air duct must have a doublewalled or insulated roof opening. This prevents
Type
the formation of condensation between the
MTD-ERV 350 L
layers of the roof. The exhaust air duct must be
MTD-ERV 350 R
laid with a gradient towards the MTD-ERV 350.
MTD-ERV 350 L VV
• The MTD-ERV 350 must be installed in a frostMTD-ERV 350 R VV
free room. The condensation must be disMTD-ERV 350 L Luxe
charged frost-free, with a downward gradient
MTD-ERV 350 R Luxe
and using a siphon. The MTD-ERV 350 must be
firmly connected to the siphon.
• The MTD-ERV 350 may only be connected to a
Type
non-powered extractor hood. Any other type
MTD-ERV 350 L Luxe VV
of extractor hood system would interfere with
MTD-ERV 350 R Luxe VV
the basic function of the balanced ventilation
MTD-ERV 350 L Luxe CC
system.
• We recommend that silencers are installed
MTD-ERV 350 R Luxe CC
on both the air intake and air discharge sides
MTD-ERV 350 L Luxe CC VV
of the MTD-ERV 350. For further information,
MTD-ERV 350 R Luxe CC VV
please contact your supplier.
Meaning of the suffixes:
In order to ensure a good and draught-free
ventilation of the dwelling, gaps were deliberately left under the inside doors. If these gaps
are sealed, for example with door seals or highpile carpets, the ventilation in the apartment
will stagnate. This would prevent the system
from operating optimally.
26 Function of the System
•
•
•
•
L
R
VV
Luxe
•
CC
=
=
=
=
Left.
Right.
Preheater.
Refers to the extended version of
the PCB panel.
= ComfoControl Avignon. This is the
touch screen remote control with additional operating options compared
with the CC Ease operating unit.
4
No space is required to the sides of the MTD-ERV 350
for its proper operation.
Exhaust air
Stale air
Supply air
Do not install the MTD-ERV 350 with a side
against a wall to avoid possible contact
noise.
Outside air
4.3.1 Connection of the Air Ducts
ComfoAir 350 – LEFT
Outside air
Intake air
Stale air
Exhaust air
ComfoAir 350 – RIGHT
Install a suitable silencer directly at the air intake and
air discharge connections. Information on silencers
is available from your supplier.
The air ducts to be connected, minimum diameter
150 mm, must be installed with as little air resistance
as possible and air tight.
•
4.3
Wall Mounting
•
Insulate the outside air duct and the stale air
duct vapour-tight between the roof/gable
opening and the MTD-ERV 350. This prevents
the formation of condensation on the outside
of the ducts.
Install the exhaust air duct with a gradient towards the MTD-ERV 350.
4.3.2 Connection of the Condensation Drain
Install the MTD-ERV 350 on a wall with a load-bearing capacity of at least 200 kg/m².
For other walls we recommend the use of a base for
installation on the floor (available as an option, see
section 4.8 with service parts). This helps to avoid
the transmission of structure-borne noise.
• Fasten the supplied mounting bracket to the
wall horizontally.
• Connect the condensation drain (not supplied)
to the underside of the MTD-ERV 350.The value
shown of 235 mm is only an indicative value.
The actual value depends on the type of condensation drain selected, see also section 4.3.2
for the connection of the condensation drain.
• Ensure that at least 1 metre of space is left in
front of the MTD-ERV 350 for later maintenance
work.
Connection
MTD-ERV 350
LEFT
Instructions for the Installer 27
4
Connection
n
MTD-ERV 350 RIGHT
The warm exhaust air is cooled by the outside air in
the heat exchanger. As a result, the moisture contained in the room air condenses in the heat exchanger. The condensation forming in the heat exchanger is discharged via the condensation tray into
the condensation drain.
The connection for the condensation drain has an
outside diameter of 32 mm. This is located on the
underside of the MTD-ERV 350.
• Connect the condensation drain to the water
lock of the home drainage system using a pipe
or hose.
• Position the upper edge of the water lock at
least 40 mm below the condensation drain of
the MTD-ERV 350.
• Ensure that the end of the pipe or hose ends
under the water level.
Ensure that the water lock of the connection to the house sewage system is always
filled with water.
Ensure that the hose end terminates at
least 60 mm below the water level. This
will prevent the MTD-ERV 350 from drawing in air.
4.4
Commissioning can be carried out with the P menus
via the CC Ease operating unit.These P menus allow
various settings (in particular for ventilation control)
to be selected for the MTD-ERV 350. An overview of
the available P menus is given below:
Menu
P1
P2
P3
P4
P5
P6
P7
P8
P9
Possibilities
Read off the status (from menu P2)
Set time delays (and indication “FILTER
DIRTY” and setting values for extractor
hood and sensors)
Setting the ventilation levels
Read off the temperature, relative humidity and CO2 concentration.
Setting additional control functions
Setting additional control functions
Read off and reset malfunctions (and
system information)
Setting 0-10 V connections
Read off the status (from menu P5)
The P menus P1, P2 and P9 are accessible for the user
and serve mainly for reading off statuses and for setting time delays.For further information, see section
2.3.7.The remaining P menus P3 to P7 are reserved
exclusively for the installer.
In the P menus the user may:
- only set the additional functions P1,
P2 and P9.
The remaining P menus P3 to P7 are reserved for the installer.
Commissioning the MTD-ERV 350
The MTD-ERV 350 can be put into operation after
installation.
Access to the P menus
Proceed as follows:
1
Press simultaneously on "
2
Wait until the "P menu" appears on the display.
"
" and
".
The P menus P1, P2 and P9 are now
accessible.
28 Instructions for the Installer
4
"
".
10 Press "
" to confirm the value.
11 Repeat steps 7 to 10
to set several parameters in turn in
the same P menu.
Or
Return to the P menu: Press "
3
Press
"
4
" once.
Or
" and "
" simultaneously for 2 seconds.
Return to the main window
Wait until the "P menu" P3 appears on the display.
The P menus P3 to P8 are now accessible.
1
5
Select with "
" or "
Press "
" twice.
" the desired P
menu, e.g. " 5 ".
6
Press "
7
Select with "
" to confirm the P menu.
" or "
" the desired P sub-
menu, e.g. " 51 ".
8
Press "
" to confirm the P sub-menu.
Making settings in the P menus
The minimum and maximum
values for the available
setting parameters are
stored in the software.
9
Select a value for the parameter with "
" or
Instructions for the Installer 29
4
Menu P3 ! Set ventilation controls
Sub-menu
P30
P31
P32
P33
P34
P35
P36
P37
P38
P39
Values for ventilation controls
Minimum
Maximum
Standard
0%
97%
Normal / High
15% / 15%
16%
98%
Normal / High
35% / 40%
17%
99%
Normal / High
50% / 70%
18%
100%
Normal / High
70% / 90%
0%
97%
Normal / High
15% / 15%
16%
98%
Normal / High
35% / 40%
17%
99%
Normal / High
50% / 70%
18%
100%
Normal / High
70% / 90%
Current %
Description
Setting the power (in %) of the exhaust air
fan in position "Absent".
Setting the power (in %) of the exhaust air
fan in position "Low".
Setting the power (in %) of the exhaust air
fan in position "Medium".
Setting the power (in %) of the exhaust air
fan in position "High".
Setting the power (in %) of the supply air
fan in position "Absent".
Setting the power (in %) of the supply air
fan in position "Low".
Setting the power (in %) of the supply air
fan in position "Medium".
Setting the power (in %) of the supply air
fan in position "High".
Current power (in %) of the exhaust air
fan.
Current power (in %)
of the supply air fan.
-
Current %
Menu P4 ! Read off the temperatures (% and ppm)
Sub-menu
P40
P41
P42
P43
P44
P45
P46
P47
P48
P49
Description
Current value of TPOST-HEATER
Comfort temperature
Current value CO2
Current value relative humidity.
Current value of TEXTRACTOR HOOD
Current value of T1
(= temperature of the outside air)
Current value of T2
(= temperature of the supply air)
Current value of T3
(= temperature of the exhaust air)
Current value of T4
(= temperature of the stale air)
Current value of TGHE
(= temperature of the outside air for geothermal heat exchanger)
30 Instructions for the Installer
Read off the temperatures (% and ppm)
Minimum
Maximum
Standard
Current oC
28 oC
20 oC
12 oC
Current ppm
Current %
Current oC
Current oC
-
-
Current oC
Current oC
Current oC
Current oC
4
Menu P5 ! Setting additional control functions
Sub-menu
P50
P51
P52
Description
Activation of
the chimney sweep control system.
Indicate whether
preheater is installed.
Values for additional control functions
Minimum
Maximum
Standard
0 (= No)
1 (= Yes)
0
0 (= No)
1 (= Yes)
0
Note:
change only if a preheater was subsequently installed.
If the MTD-ERV 350 has to be reset to the works settings via P75, a subsequently installed
preheater will be reset as standard to "ABSENT".
• Check the presence of the preheater after a general reset via menu P75.
Setting the
0
3
2
preheater control.
v Level 0
Particularly safe setting.
v Level 1
Safe setting.
v Level 2
Nominal setting.
v Level 3
Economy setting.
Note:
The PREHEATER IS SWITCHED ON EARLIEST WITH THE particularlysafesetting.Thislevelthusoffersthe
greatest safety for maintaining balanced ventilation. On the other hand, the preheater is
switchedonthelatestinthe ECONOMY SETTING.Thislevelthusofferstheleastsafetyformaintaining balanced ventilation.
During commissioning of the MTD-ERV 350 the preheater control can generally be left on
Level 2:NOMINAL SETTING (= works setting).Only in areas with cold winters (with daytime temperaturesregularlyapprox.-10°Corbelow)shouldLevel1:SAFESETTING orevenLevel0:PARTICULARLY SAFE SETTINGS be selected.
Sub-menu
P53
Values for additional control functions
Description
Minimum
Maximum
Standard
Indicate presence of an extractor hood. 0 (= No)
1 (= Yes)
0
P54
Note:
If an extractor hood is connected to the
ventilation system, the user can set the
ventilation levels for the extractor hood
via P29.
Indicate presence of a bypass.
0 (= No)
P55
P56
1 (= Yes)
1
Note:
The MTD-ERV 350 is equipped with a bypass as standard.The value can therefore
be left at '1'.
Indicate presence of a post-heater.
0 (= No)
1 (= Yes)
0
Setting the necessary air volume for the nL
HL
nL
dwelling.
• nL: "Normal air volume".
• HL: "High air volume".
Note:
Setting the air volume in P56 (to "nL" or "HL") forms the basis for setting the air specifications
and hence for setting the fans. For further information, see section 4.5 and P30 to P37.
Instructions for the Installer 31
4
Sub-menu
P57
Description
Setting the MTD-ERV 350 Type.
• Li = Left-hand version.
• Re = Right-hand version.
Values for additional control functions
Minimum
Maximum
Standard
Li
Re
Li
Note:
The MTD-ERV 350 is set correctly at the
factory.
• Refer also to the identification plate for
these data.
P58
0
Setting the fan type.
(Not yet avail- • 0 = Standard.
able)
• 1 = Constant volume.
• 2 = Constant pressure.
P59
Note:
The MTD-ERV 350 is set correctly at the
factory.
• Constant volume or constant pressure
fans cannot be installed subsequently.
Enthalpy exchanger installed
0 (= No)
2
0
1 (= Yes) with
moisture sensor
2 (= Yes) without moisture
sensor
Menu P6  Setting additional control functions
Sub-menu
P60
P61
P62
P63
P64
Description
Indicate presence of a
geothermal heat exchanger (GHE).
Setting the percentage that the supply air fan must run higher when
the valve of the geothermal heat exchanger (EWT) is open.
Tghe, low
Tghe, high
Tnaheater, desired
Values for additional control functions
Minimum
Maximum
Standard
0 (= No)
1 (= Yes)
0
0%
99%
0%
0%
10%
5%
15%
25%
40%
7%
23%
18%
Menu P7 ! Read off malfunctions (and system information)
Sub-menu
P70
P71
Description
Current software version.
Last malfunction.
P72
Last malfunction but one
P73
Last malfunction but two
P74
Reset a malfunction on the
MTD-ERV 350.
32 Instructions for the Installer
Values (malfunction) information
Minimum
Maximum
Standard
Software version number
Code corresponding to alarm and malfunction
display (see section 4.7)
Code corresponding to alarm and malfunction
display (see section 4.7)
Code corresponding to alarm and malfunction
display (see section 4.7)
0
1
0
4
Sub-menu Description
P75
Complete reset.
Values (malfunction) information
Minimum Maximum
Standard
0
0
0
• Press
"
" for 5 seconds to carry out a com-
plete reset.
A complete reset returns all settings to
the original works settings.
After a complete reset, the MTD-ERV 350 prompts you to enter “nL / HL” (see P56)
and “Li / Re” (see P57) again.
After a complete reset, all settings in menus P2 and P3 and the existing controls P5
and P6 have to be made again.
P76
If the MTD-ERV 350 is equipped with a preheater, this must be logged in again in
menu P51, as it is set to "Logged out" as standard after a complete reset.
Self-test of the MTD-ERV 350.
0
1
0
Explanation
The MTD-ERV 350 switches to the highest level immediately after activation of the self-test.In addition, the bypass valve opens and closes immediately after activation of the self-test.If this self-test is
completed without malfunctions, the valve of the preheater (if installed) then opens and closes.
Menu P8  Open-loop and closed-loop control
Selection between open-loop and closed-loop control
Sub-menu Description
P80
0= Open-loop control 1 = Closed-loop control (by analogy with input 1)
P81
0= Open-loop control 1 = Closed-loop control (by analogy with input 2)
P82
Min. setting by analogy with input 1
P83
Max. setting by analogy with input 1
P84
Min. setting by analogy with input 2
P85
Max. setting by analogy with input 2
Max
Min
0V
10
Instructions for the Installer 33
4
4.5
Setting the Air Specifications
tions so that they are all in the minus range.
Ensure also that a supply and an exhaust
valve remain fully open.
The MTD-ERV 350 must be set after installation.
This can be performed using the air specifications of the MTD-ERV 350 shown above.
v Setting the normal air volume ‘nL’ corresponds to the presetting of the G 90.
v Setting the normal air volume ‘nL’ corresponds to the presetting of the G 91.
•
The standard settings of the MTD-ERV 350, nL,
are as follows:
Position ABSENT
Position LOW
Position MEDIUM
Position HIGH
Use the MTD-ERV 350 air specification
diagram for setting the fans.
15%
35%
50%
70%
•
•
The standard settings of the ComfoAir 350, HL, are
as follows:
Position ABSENT
Position LOW
Position MEDIUM
Position HIGH
15%
40%
70%
90%
To set the MTD-ERV 350 (after installation), proceed
as follows:
• Switch the MTD-ERV 350 to the setting mode.
– Press simultaneously for two seconds on
"
" and "
".
– Wait until "InR" appears on the CC Ease
display.
In setting mode, bypass and preheater
are always deactivated. The MTD-ERV
350 switches the setting mode off again
automatically after 30 minutes.
•
•
•
Close all windows and outside doors.
Close all inside doors.
Check the presence of air circulation systems in
the building (at least 12 cm2 per l/s).
The air circulation systems in the building must achieve at least 12 cm2 per l/s.
Check whether both fans function in the
three speed ranges.
• Switch the MTD-ERV 350 to the high position.
• Install all the valves and set them according to
the instructions or as in the reference dwelling.
If no data are known:
– Install the valves and open them as far
as possible.
– Measure the air volumes, first the supply air
and then the exhaust air.
– differ by more than approx. 10% from the
nominal air volumes and the majority of
the deviations are in the plus range, adjust
the fan so that all the deviations are in the
plus range. If the majority of the deviations
are in the minus range, adapt all the devia•
34 Instructions for the Installer
Change the fan settings in the P menus P30 to
P37 via the CC Ease operating unit.
– Select the lowest possible setting in order to minimise energy consumption.
– Ensure that the ratio of the air volumes between high, medium and low remains the
same.
•
4.6
If the previously set air volumes still differ
too much:
– Adjust the valves further.
Check the whole system again after adjustment
of all the valve stages.
Switch the MTD-ERV 350 (back) to ventilation
position 2.
Maintenance by the Installer
As installer you have to service the MTD-ERV 350 as
follows:
• Inspect the heat exchangers and fans
• Clean the filter if a preheater is installed.
These measures are described in more detail briefly
in the following sections.
If these measures are not performed
(regularly), there is a danger that the
MTD-ERV 350 will cease to function correctly.
4.6.1 Inspection of Heat Exchanger and
Fans
The fans and the heat exchanger must be inspected
every 4 years.
• Remove the mains plug (A) from the plug socket.
• Pull the filters (B) out of the MTD-ERV 350.
• Remove the front plate by removing the screws
(C).
• Push the front plate in the direction of the arrow and remove it from the MTD-ERV 350.
• Remove the sealing plate by removing the
screws (D).
4
A
Designated as R
B
E
G
F
C
Right-hand version
Then:
• Remove the heat exchanger (F) from the drain
plate (G).
Caution!
There may still be water in the heat exchanger!
D
•
During installation of the sealing
plate, its underside must first be
inserted behind the raised edge so
that a good seal is achieved.
MTD-ERV 350 – L
Pull the tape (E) to remove the heat exchanger (F) and the drain plate (G).
Remove the bypass duct (H) on the left-hand
version of the MTD-ERV 350.
•
•
MTD-ERV 350 – R
Remove the bypass duct (H) on the right-hand
version of the MTD-ERV 350.
Pull the tape (E) to remove the heat exchanger
(F) and the drain plate (G).
•
•
Designated as L
G
E
B
F
Left-hand version
Clean the heat exchanger (F), if necessary.
– Immerse the heat exchanger in warm water (max. 40° C) to clean.
– Finally rinse the heat exchanger thoroughly with warm tap water (max. 40° C).
– Hold the heat exchanger with both hands
at the green side surfaces and shake out
all the water.
Caution!
On no account should aggressive or solvent-based cleaning agents be used.
Do not install the heat exchanger yet
(the fans can be removed, inspected and
cleaned, if necessary, in the following
steps).
If an enthalpy heat exchanger is installed, observe the corresponding instruction.
Do not install the heat exchanger yet if the fans
are also to be inspected. The following section
describes how to remove, inspect and clean the
fans, if necessary, after the heat exchanger:
• Remove the plastic plate (I) in front of the PCB
panel by loosening the two screws.
• Loosen the connectors (J) and the earth cable
(J) at the PCB panel and remove the cables with
the two grommets (K) completely.
• Remove the complete fan casing (L) by pressing
in the tabs (M).
• Remove the inlet neck (N) by pressing in the
tabs around the fan casing.
• Clean the fans (O).
Instructions for the Installer 35
4
K
J
I
L
N
O
M
Use a soft brush to clean
the fan blades.
Remove dust using a vacuum cleaner.
Caution!
Take care not to damage the fan blades.
Caution!
Take care not to damage the temperature sensor.
•
•
Install all the parts again in the reverse order.
Carry out the self-test described under P76, see
section 4.4.
Install the drain plate (G) again correctly
under the heat exchanger. The holes in
the drain plate must be on the side of
the condensation drain.
Tighten the screws to a maximum torque
of 1.5 Nm. This corresponds to roughly
level 2 of a normal screw drill.
4.6.2 Filter Cleaning, if Preheater is Fitted
The filter of the preheater (if installed) must be
cleaned every 4 years.
• Remove the mains plug (A) from the plug socket.
• Pull the filters (B) out of the MTD-ERV 350.
• Remove the front plate by removing the screws
(C).
• Push the front plate in the direction of the arrow and remove it from the MTD-ERV 350.
• Remove the sealing plate by removing the
screws (D).
• Remove the plastic plate (I) in front of the PCB
panel by loosening the two screws.
• Loosen the connectors (J) and the earth cable
(J) at the PCB panel and remove the cables with
the two grommets (K) completely.
• Remove the cable (P) of the PCB panel.
• Remove the bottom (Q) of the preheater.
36 Instructions for the Installer
•
•
•
•
– The bottom is secured in the electronic
carriage by 4 tabs. Two tabs are located on
the front side (visible) and two on the rear
side (not visible).
Clean the filter using a brush.
Remove any caked soiling with a damp cloth.
Install all the parts again in the reverse order.
Carry out the self-test described under P76, see
section 4.4.
Install the drain plate (G) again correctly
under the heat exchanger. The holes in
the drain plate must be on the side of
the condensation drain.
Tighten the screws to a maximum
torque of 1.5 Nm. This corresponds
to roughly level 2 of a normal screw
drill.
4
4.7
Malfunctions
In the event of a malfunction in the MTD-ERV 350:
• A malfunction indication normally appears on the display of the CC Ease operating unit.
Not all malfunction indications appear on the CC Ease display, however, even when there is a malfunction (or
problem). Both types of malfunction (or problem) are described briefly in the following sections.
4.7.1 Malfunction Indications on the CC Ease Display
The following table contains an overview of the malfunction indications that are shown on the CC Ease display.
Code
A0
A1
A2
A3
A4
A5
A6
A7
A8
A10
A11
E1
E2
E3
EA1
EA2
Description
NTC sensor TEWT defective.
NTC sensor T1 defective.
(= temperature of the outside air)
NTC sensor T2 defective.
(= temperature of the supply air)
NTC sensor T3 defective.
(= temperature of the return air)
NTC sensor T4 defective.
(= temperature of the exhaust air)
Bypass motor malfunction.
Preheater motor malfunction.
Preheater does not heat up sufficiently.
Preheater becomes too hot.
NTC sensor Tch defective.
NTC sensor Trh defective.
Exhaust air fan not running (M1).
Supply air fan not running (M2).
Temperature sensor extractor hood too
high.
Enthalpy sensor measures excessively
high moisture values.
No communication with the enthalpy
sensor.
Caution!
The electrical connections must not come into contact with moisture.
Pay attention during installation of the heat exchanger and drain plate that the condensation drain is on the same side as the condensation drain fitting.
Inspect the components of the condensation drain every 2 years.
Instructions for the Installer 37
4
4.7.2 Malfunction indications on the CC Ease Display à Remedy
This section contains tips on remedying the malfunctions described in section 4.7.1 that can appear on the CC Ease
display.
’FiL‘ ’tEr’
in display
Remove plug
from socket
Clean or
replace filter
Mount filter with the rounded
part of the handle pointing
downwards
Reinsert the
plug in the
socket
Press
until ’FiL‘ ’tEr‘ disappears
E1 / E2
Exhaust air/supply air fan
malfunction
CAUTION!
Avoid contact with the PCB
and frost protection
element due to risk
of electrocution
Remove the filter,
the plastic front cover
and the metal cover
Yes
Do the fan
connection and the PCB
register 230 VAC?
Then initiate the
self-test (P76 on 1)
Yes
Do the fan
and the PCB
register current
(1.5 – 10 VDC)?
No
Replace the PCB
CAUTION: Reset unit
No
Replace the PCB
CAUTION: Reset unit
Remove the heat exchanger
and the foam part of the
bypass and replace the fan
Left-hand or right-hand version of the MTD-ERV 350?
See illustration on plastic cover for location of PCB
ERV 350
ERV 350
38 Instructions for the Installer
Left: Supply fan left
Right: Supply fan right
4
E3
Extractor hood temperature
sensor too high.
Caution!
Avoid contact with the
PCB and frost protection
element due to risk of
electrocution
Is something
cooking on the hob?
Yes
No
Turn hob off and
remove item from
heat source
Resistance OK?
Yes
Replace PCB
Caution:
Reset unit!
No
Replace
temperature sensor
E4
MTD-ERV 350 switched off
via external switch
Caution!
Avoid contact with the
PCB and frost protection
element due to risk of
electrocution
Cause depends on unit
connected to the MTD-ERV 350:
check the connected unit.
E A1
Moisture sensor registers >60%
relative humidity in exhaust air.
Consult the user;
fit standard heat exchanger??
Caution!
Avoid contact with the
PCB and frost protection
element due to risk of
electrocution
E A2
Cannot read out moisture
sensor
Connection
between sensor
and PCB OK?
Yes
No
Repair
connection
Check sensor
resistance
Yes
Replace PCB
Caution:
Reset unit!
Resistance
OK?
No
Replace
temperature sensor
Instructions for the Installer 39
4
A1 / A2 / A3 / A4
Temperature sensor malfunction
T1 / T2 / T3 / T4
CAUTION!
Avoid contact with the
PCB and frost protection
element due to risk of
electrocution
Temp
Remove the plug from
the socket
Remove the filter, the plastic
front cover and the metal cover
Remove temperature
sensor from the PCB
Check temperature sensor
resistance; see table
Is resistance OK?
Yes
Resistance [K!]
o
C
MIN
MED
MAX
10
19.570
19.904
20.242
15
15.485
15.712
15.941
18
13.502
13.681
13.861
19
12.906
13.071
13.237
20
12.339
12.491
12.644
21
11.801
11.941
12.082
22
11.291
11.420
11.550
25
9.900
10.000
10.100
30
7.959
8.057
8.155
No
[KΩ
[°C]
Replace the PCB
Replace the
temperature sensor
CAUTION: Reset unit!
A5 / A6
Motor bypass / frost protection element
malfunction
Remove the filter,
the plastic front cover and
the metal cover
Then initiate the
self-test (P76 on 1)
Is the motor
running?
Yes
Check connection and PCB;
12 VDC if motor is
running (see menu P76)
Remove the motor and
the cog (incl. plastic part)
Yes
Is the cog defective?
No
No
Yes
Does the
PCB register
current?
No
Replace the PCB
Replace cog
40 Instructions for the Installer
Replace motor
Replace motor
CAUTION: Reset unit!
4
A7
Malfunction
Frost protection element does
not warm up (sufficiently)
CAUTION!
Avoid contact with the
PCB and frost protection
element due to risk of
electrocution
Remove the plug
from the socket
Remove the filter,
the plastic front cover and
the metal cover
Remove the plug of frost
protection element from the PCB
Is the resistance
of the plug of the frost
protection element
> 300 ohm?
Yes
Remove the heat exchanger and
the frost protection element
(and also the foam part in case
of right-hand version)
Yes
No
Is resistance
of T1 OK?
No
Replace the PCB
Yes
Is the resistance of
the cable of the frost
protection element
infinite?
Replace T1
temperature sensor
No
Check resistance of the cable
and check connections with the
frost protection element
If fuse is blown,
replace cable
A8
Malfunction
Frost protection element gets too hot
CAUTION!
Avoid contact with the
PCB and frost protection
element due to risk of
electrocution
Remove the filter,
the plastic front cover and
the metal cover
Yes
Check the following factors:
- Fan settings (too low?)
- Supply air valves (opened too wide?)
- The entire duct system (blockage?)
Does the frost protection
element flap work properly?
(Check with P76)
No
See A5 / A6 Malfunction
section “Initiate self-test”
Instructions for the Installer 41
4
A0 / A10 / A11
Malfunction
Temperature sensor
Tghe / TCH / TAH
CAUTION!
Avoid contact with the
PCB and frost protection
element due to risk of
electrocution
Temp.
Check temperature sensor
resistance; see table
Yes
Replace PCB
Caution:
Reset unit!
42 Instructions for the Installer
Resistance
OK?
Resistance
[KΩ]
[°C]
No
Replace
temperature sensor
(°C)
MIN.
10
19.570
19.904
MED.
20.242
MAX.
15
15.485
15.712
15.941
18
13.502
13.681
13.861
19
12.906
13.071
13.237
20
12.339
12.491
12.644
21
11.801
11.941
12.082
22
11.291
11.420
11.550
4
4.7.3 Malfunctions (or Problems) without Indications
This section gives an overview of the malfunctions (or problems) that are not displayed on the CC Ease display.
Problem/Malfunction Cause
All OFF
Supply voltage
High air delivery temperature in summer
Low air delivery temperature in winter
No or insufficient air
supply, shower remains wet
No supply voltage
Bypass remains closed
Bypass remains open
Filter clogged
Valves clogged
Heat exchanger clogged by dirt.
Heat exchanger frozen
Fan dirty
Too noisy
Ventilation ducts clogged
MTD-ERV 350 in frost mode
Fan bearings defective
Fan settings
Scraping noise
• Siphon is empty
• Siphon does not seal
Whistling noise
• An air leak somewhere in the system
Air flow noises
• Valves do not seal against duct.
• Valves not sufficiently open
Check / measure
Check the fuse on the PCB panel.
• If the fuse is OK, the circuit board is defective.
The mains power supply has failed.
Lower
the comfort temperature.
Increase
the comfort temperature.
Replace
the filters.
Clean
the valves.
Clean
the heat exchanger.
Thaw
the heat exchanger.
Clean
the fan.
Clean
the ventilation ducts.
Replace
the fan bearings.
Change
the ventilation control settings.
Install
the siphon again.
Seal
the air leak.
Install
the valves again.
Set
the valves again.
Leaking condensation Condensation drain clogged
Clean
the condensation drain.
Condensation from exhaust duct does not Check whether
run into drain plate
the connections are correct.
Wired 3-position
Wiring is not OK
Check the circuitry of the 3-position switch
switch does not func- Switch is defective
using a voltmeter:
tion
• Voltage only on N & L3:
[The fans run at position 1].
• Voltage only on N & L3 & L2:
[The fans run at position 2].
• Voltage only on N & L3 & L1 or N & L3 & L2
& L1:
[The fans run at position 3].
Wireless 3-position
Battery is discharged
Check
switch does not functhe battery.
tion
• Replace the battery, if necessary.
Instructions for the Installer 43
4
4.8
Spare Parts
3
4
6
2
11
9
10
9
5
8
7
1
12
The following table contains an overview of the spare parts available for the MTD-ERV 350.
Number
1
2
3
4
5
6
7
8
9
10
11
12
13
14
Part
Fans (left and right)
PCB panel in MTD-ERV 350.
PCB panel in top-mounted casing, Basic or Luxury version.
Temperature sensors T1 / T3 (in top of unit, on electronic carriage).
Temperature sensors T2 / T4 (in fan casing of both fans).
Servo motor & cable (for bypass and preheater)
Heat exchanger (or combined heat/enthalpy exchanger)
Filter clamp (2x)
Filter cloths (2x)
Filter set (with filter clamps, filter cloths and filter holders).
Preheater (also available as an optional kit for subsequent installation).
Mounting frame for installation on the floor (option).
Remote control transmitter (option)
Display (option).
44 Instructions for the Installer
Brown
Blue
Red
Black
White
Brown
White
Brown
White
Yellow
Blue
Preheater valve
Green/ Yellow
Black
Red
White
Braun
White
Brown
Blue
Yellow
White
Bypass valve
Blue
Brown
Preheater
Green/ Yellow
4.9
Green/ Yellow
4
Wiring Diagram:
MTD-ERV 350 – LEFT-HAND Standard Version
Supply air
Blue
Brown
Blue
Brown
Blue
Bathroom switch
Brown
Exhaust air
Enthalpy
Instructions for the Installer 45
hb
ha
GND
Spare
Spare
Spare
Ext. Comm.
GND
CCa
CCb
GND
TX
RX
12V
GND
Aa
Ab
12V
GND
Ea
Eb
12V
RS232 - KFB
E/C
N
L
N
Extractor hood
Spare
CC EASE
Comfocontrol
Enthalpy
sensor
(IN 0-10V)
Analogue 2
Brown
Blue
TRI
1
Artic
12V
Spare
12V
FIL
12V
GND
Spare
010
GND
Red
Black
White
Brown
White
Brown
White (
)
Gelb (0-10V)
Blau (-)
Preheater valve
VENT.
(IN 0-10V)
010
010
Spare
Spare
Tnav
T extractor
hood
External filter
Switch off Heat
Exchanger
Green/ Yellow
VENT.
Analogue 4
(IN 0-10V)
GND
GND
Tah
GND
Tch
GND
FIE
GND
OFF
Green/ Yellow
T2/T4
Analogue 3
(IN 0-10V)
010
GND
Tge
GND
CH
GND
BS
GND
Malfunction
T1/T3
Analogue 1
T.GHE
Extractor hood
switch
Bathroom
switch
0-10V OUT
ERR
M
ERR
VENT.
AH
T2/T4
VENT.
BYP/PIE
T2
T3
46 Instructions for the Installer
T1/T3
Brown
Blue
Bypass valve
Preheater
Black
Red
White
Brown
White
Brown
Blue (-)
Yellow (0-10V)
White (
)
Green/ Yellow
+
-
BYP/PIE
T4
T1
Post-heater
4
4.10 Wiring Diagram:
MTD-ERV 350 – LEFT-HAND Luxury Version
Supply air
M
M
SA 1-3V
2
1
(N) Blue
(N) Blue
(L3) Brown
(L3) Brown
(L2) Black
L2
(L1) Grey
L1
RJ11
RS232
(N) Blue
Bathroom switch
L2
L1
(L3) Brown
M
Exhaust air
Comm. Basis
RS232 - PC
N
N
L2
L1
L
L2
PE
PE
PE
PE
PE
PE
4
BS
1
2
3
4
+
LED
SAI 1-3V
Bypass valve
Brown
Blue
Red
Black
White
Brown
White
Brown
White
Yellow
Blue
Green/ Yellow
Green/ Yellow
Black
Red
White
Braun
White
Brown
Blue
Yellow
White
Preheater valve
Blue
Brown
Preheater
Green/ Yellow
4
4.11 Wiring Diagram:
MTD-ERV 350 – RIGHT-HAND Standard Version
Exhaust air
Blue
Brown
Blue
Brown
Blue
Bathroom switch
Brown
Supply air
Enthalpy
Instructions for the Installer 47
hb
ha
GND
Spare
Spare
Spare
Ext. Comm.
GND
CCa
CCb
12V
GND
TX
RX
12V
GND
Aa
Ab
12V
GND
Ea
Eb
RS232 - KFB
E/C
N
L
N
Extractor hood
CC EASE
Comfocontrol
Enthalpy
sensor
(IN 0-10V)
Brown
Blue
Red
Black
White
Brown
White
Brown
White (
)
Yellow (0-10V)
Blue (-)
TRI
1
Artic
12V
Spare
Spare
Analogue 2
Bypass valve
FIL
12V
GND
Spare
GND
12V
Tnav
T extractor
hood
External filter
Switch off Heat
Exchanger
VENT.
(IN 0-10V)
010
010
Spare
Spare
010
GND
Tah
GND
Tch
GND
FIE
GND
OFF
Green/ Yellow
Green/ Yellow
VENT.
Analogue 4
(IN 0-10V)
GND
010
GND
Tge
GND
CH
GND
BS
GND
Malfunction
T2/T4
Analogue 3
(IN 0-10V)
Analogue 1
T.GHE
Extractor hood
switch
Bathroom
switch
0-10V OUT
ERR
ERR
M
AH
VENT.
T2
T3
48 Instructions for the Installer
T1/T3
T2/T4
VENT.
BYP/PIE
T1/T3
Black
Red
White
Brown
White
Brown
Blue (-)
Yellow (0-10V)
White (
)
Green/ Yellow
Brown
Blue
Preheater valve
Preheater
+
-
BYP/PIE
T4
T1
Post-heater
4
4.12 Wiring Diagram:
MTD-ERV 350 – RIGHT-HAND Luxury Version
Exhaust air
M
M
SA 1-3V
2
1
(N) Blue
(N) Blue
(L3) Brown
(L3) Brown
(L2) Black
L2
(L1) Grey
L1
RJ11
RS232
(N) Blue
Bathroom switch
L2
(L3) Brown
L1
M
Supply air
Comm. Basis
RS232 - PC
N
N
L2
L1
L
L2
PE
PE
PE
PE
PE
PE
4
BS
1
2
3
4
+
LED
SAI 1-3V
4
4.13 EC Declaration of Conformity
J.E. Stork Ventilatoren B.V. are the manufacturers of the MTD-ERV 350
8028 PM Zwolle-NL
Commercial Register Zwolle 22293
EC Declaration of Conformity
Designation of the appliance:
: Heat Recovery Unit: MTD-ERV 350
Conforms to the directives
: Machine Safety Directive (98/37/EC)
Low Voltage Directive
(73/23/EEC) (98/37/EC)
EMC Directive
(89/336/EEC, 92/31/EEC, 93/68/EEC)
Zwolle, 16 June 2007
J.E. Stork Ventilatoren B.V.
E v Heuveln,
General Managing Director
Instructions for the Installer 49
™
MTD SOLUTIONS LTD
Unit 1, Burgage Business Park, Blessington, Co. Wicklow, Ireland.
Tel: +353 (0)45 900 590 Fax: +353 (0)45 900 623
Email: info@mtd-solutions.com
www.mtd-solutions.com