™ MTD-ERV 350 / 365 Installation & Operating Manual
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Table of Contents 1 INTRODUCTION ............................................................................................................................. 1 1.1 Foreword .................................................................................................................................. 1 1.2 CE Symbol ............................................................................................................................... 1 1.3 Warranty and Liability .................................
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 ....................................................................................................................
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.
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 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).
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.
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.
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.
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..
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.
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.
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.
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 (
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. ").
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.
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.
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.
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.
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 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.
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).
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.
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).
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.
3 3.5.
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 Heatin
3 3.
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.
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.
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.
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.
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".
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".
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.
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.
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.
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.
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.
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.
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.
4 E3 Extractor hood temperature sensor too high.
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.
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 ver
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.
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.
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).
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.
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.
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.
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.
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.
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