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7.5. 

Equipment’s manufacturing label 

(1) 

Model, nominal capacity 

(2) 

Manufacturing number 

(3) 

Year of production 

(4) 

Weight 

(5) 

Nominal capacity of fans 

(6) 

Fan type 

(7) 

Fan power supply 

(8) 

Filter class 

(9) 

Filter cloth dimensions 

(10) 

Heat recovery exchanger type 

(11) 

Control system type 

8 .

I m p o r ta n t   n o t i c e s

DUPLEX series heat recovery units are designed for comfort ventilation in areas with normal environmental conditions and

relative humidity up to 60 %. If the equipment were to be used for other purposes such as to dry out new buildings or not to be

run properly in compliance with instructions contained in the operation and maintenance manual, the manufacturer would not be

liable for any resulting damage.

Only adult persons who have read and are sufficiently familiar with the operation, use and maintenance manual may operate the

equipment.

The user is not allowed to tamper with or modify any part of the equipment, particularly its electrical wiring!!

Only professional service technicians with relevant qualifications may perform equipment repairs. Unprofessional repairs are

very risky and may result in a loss of warranty.

Before opening the door of the equipment for cleaning, filter cloth replacement or general maintenance, make sure that it is

disconnected from power supply and prevent its reconnection by another person.

To prevent injury caused by a fan impeller, ductwork of at least 2 metres in length must always be connected on the fan

discharge side. The ductwork must be fastened to the equipment in such a way that it cannot be removed without tools.

The equipment can only be installed in areas with temperatures up to 10 °C and relative humidity 60 % at 20 °C.

If the equipment has been out of operation for a long period, extra care must be taken during its re-commissioning.

The equipment designed for normal environmental conditions may be operated within the temperature range of ventilation air

between -25 °C and +45 °C and relative air humidity up to 70 %, in an environment where there is no risk of fire or explosion of

flammable gases and fumes, not containing organic solvents or aggressive substances that might damage the mechanical parts

of the equipment. If there is a danger of such gases and fumes temporarily entering the duct system (e.g. floor bonding,

painting), the equipment must be switched off sufficiently beforehand.

Only persons with relevant electrical engineering qualifications may make electrical connections, commissioning and setting of

the equipment.

The units must be protected with a 1 x 10A char. C circuit breaker.

If additional protection against a dangerous touch of live and neutral parts using a current protector is used, a special current

protector designed for circuits with frequency convertors and switched-mode power supplies is necessary. It is a protector

sensitive to alternate, pulse and residual currents and resistant to current surges 5kA.

Before installing and commissioning the equipment, thoroughly read the installation, use and maintenance manual!

The equipment and all accessories must be installed and used in compliance with the design, the technical conditions of the

manufacturer and applicable legislative regulations and technical standards.

The equipment must not be installed and operated in an aggressive environment which could damage its external and internal

components.

Before putting the equipment into permanent operation, an initial inspection report for the equipment’s power supply must be

provided.

In the event of a defect the equipment must be immediately disconnected from power supply!

During the installation and handling of the equipment observe all rules of safe work, including safe work in heights and work with

suspended loads, and use suitable protective equipment.

During installation make sure the equipment’s enclosure does not get damaged or deformed.

The manufacturer is not liable for damage caused by improper installation which fails to observe the 

installation manual and common practice in installing HVAC units and control systems. 

Summary of Contents for DUPLEX 250 Easy

Page 1: ...DUPLEX 250 300 400 Easy Use maintenance and installation manual Version 08 EN Issue 22 04 2014 Code R_19_01_V08_EN_2014_04 ...

Page 2: ... G4 F7 filter cloth replacement 10 3 3 Cleaning the plastic heat recovery exchanger 11 3 4 Cleaning the CPA controller 12 3 5 Other miscellaneous maintenance 12 4 Faults errors and troubleshooting 13 4 1 Description of fault messages and their causes 13 5 Equipment installation and commissioning 14 6 Equipment installation and commissioning 14 6 1 Package content 14 6 2 Key dimensions of the equip...

Page 3: ...t room temperature and operating mode Alerts to the need for air filter replacement Display 1 Time 2 Alerts e g the need for filter replacement 3 Date 4 Current room temperature 5 Air reheating indication if the system includes a reheater 6 Ventilation capacity setting in 7 Selected operating mode Description of controls Short press general controls and parameter settings Long press 3 s of the ven...

Page 4: ...y with the capacity set at outside temperatures as follows Above approx 5 C to approx 25 m3 h person i e for 4 persons 100 m3 h with 70 m3 h set at night Below approx 5 C to approx 20 m3 h person i e for 4 persons 80 m3 h with 50 m3 h set at night Weekly program a general ventilation mode with a required rate of ventilation provided by the unit according to schedule parameters Automatic mode the c...

Page 5: ...ne parameter is shown in the menu you can switch between these by a short press a parameter can be set by pressing and repeatedly setting can be faster if you press and hold the symbol 2 3 3 Menu PROGRAM weekly program Setting a weekly program time schedule for ventilation capacity Setting a weekly program for starting air reheat Changes made in a weekly program for a selected period of Mon Sun Mo...

Page 6: ...eration is indicated in the basic menu by symbols and Note Air reheating with an electric heater is only possible with a minimum ventilation capacity of 30 due to a sufficient air flow rate for cooling the heating elements 2 4 User system settings Using directional arrows you can move between individual user menus MODE VENTILATION REHEAT FILTER TIME SETTINGS By pressing OK in the SETTINGS menu oth...

Page 7: ...10 100 with input DI1 closed Setting a function s start delay time in a range of 0 300 s in 10 second steps Setting a function s run down time in a range of 0 300 s in 10 second steps If a button is used the start delay time must be set to 0 s in order for the short press of the button to be accepted and the run down time must be set to a non zero value 2 4 5 SENSOR menu analogue input IN1 Setting...

Page 8: ...ernal air temperature in a range of 3 C in 0 5 C steps 2 4 8 DISPLAY menu Setting the display brightness and contrast recommended values are 70 and 50 2 4 9 LANGUAGE menu Setting the menu language Note If the controller has been disconnected from power supply for more than 48 hours the language is automatically set to English when switched on again 2 4 10 Automatic ventilation modes If there is a ...

Page 9: ... front panel with display Now it is possible to replace the CR1632 battery and put the two parts of the controller back together After turning it on it is necessary to set the correct time and date 2 4 13 Supply air reheat mode Only external EPO PTC series duct electric air heaters fitted with their own thermostat to set air temperature downstream the heater can be connected to the equipment Up to...

Page 10: ...aximum ventilation capacity levels a full range of 0 100 is set by the manufacturer Description 1 Setting of min ventilation capacity 2 Setting of max ventilation capacity 3 E qui pm e nt m a i nt e na nc e by t he us e r 3 1 Basic instructions filter replacement maintenance and cleaning Maintenance involves visually checking the equipment regularly replacing filters and cleaning the heat recovery...

Page 11: ...rom one side to another Press the cover into the unit s enclosure so that it is flush with the lid s edge along the entire perimeter 3 3 Cleaning the plastic heat recovery exchanger The recommended interval of heat recovery exchanger cleaning is about 2 years depending on the nature of the operating environment If necessary wash the heat recovery exchanger block with warm water with a detergent se...

Page 12: ...icating only the seal with silicon oil for easy sliding and increasing the flexibility and life span of the seal 3 4 Cleaning the CPA controller The CPA controller requires the same maintenance as the lighting switch cleaning is only possible using a dry cloth no water may enter the inside of the controller Liquids which might damage its surface must not be used for its cleaning e g organic solven...

Page 13: ...the heater has been started supply air continues to be cold The electric heater is not connected to power supply Connect the equipment to power supply switch on upstream safety circuit breakers can only be done by an authorized person Response of the electric heater s heat protection Wait to see if the fault does not sort itself out after approx 1 hour Low maximum capacity of the heater Does not c...

Page 14: ...uring transport the equipment must be protected against any falls mechanical damage water leaks and any other adverse effects that could damage the equipment or its packaging 6 E qui pm e nt i ns t a l l a t i on a nd c om m i s s i oni ng 6 1 Package content The basic package of DUPLEX Easy units contains the following accessories The operation maintenance and installation manual An abridged cont...

Page 15: ...GEND e1 Fresh air supply from the outside e2 Supply of air after heat recovery to the interior i1 Exhaust air extraction from the interior i2 Exhaust air discharge into the atmosphere K Condensate drain Installati on position View Configuration of ports and condensate drain positions Under ceiling PODSTROPNÍ PODLAHOVÁ PARAPETNÍ K K K K K K K K Floor standing PODSTROPNÍ PODLAHOVÁ PARAPETNÍ K K K K ...

Page 16: ...the elements supplied and a threaded rod and an anchor The threaded rod and the is not included Anchoring points DUPLEX 250 Easy DUPLEX 300 Easy DUPLEX 400 Easy 618 4xO9 280 805 4xO9 805 775 280 618 4xO9 80 Anchoring detailed view 3 2 1 4 5 6 7 délka závitové tyče 230 délka kotvení 1 DUPLEX Easy unit 2 Threaded rod M8 NOT INCLUDED 3 Wall ceiling anchor NOT INCLUDED 4 DIN 9021 M8 washer INCLUDED 5 ...

Page 17: ...e distribution silencer with sound dampening insulation Recommended distances min 250 min 75 min 350 min 350 6 6 Fitting the condensate drain The unit must have a condensate drain fitted in exhaust air outlet section i2 see paragraph 6 3 Condensate drains not in use must remain sealed The condensate drain line must be connected so that it does not get damaged during handling the unit In under ceil...

Page 18: ...eedn t be cut out just push out the plug being pushed out Fitting the bushing into the unit s enclosure Fitting The point designed to fit the condensate drain with accessories Push out the middle part of the hole using just your finger the hole below the outlines of the smaller hole Remove the plug Insert the bushing with the flange on the inside of the unit Put on a washer from the other side and...

Page 19: ... permanently flooded After the unit has been out of operation it is necessary to check the siphon for flooding and free passage before re commissioning the unit Siphon arrangement on a flexible hose Detailed view of securing the siphon with a plastic clip DUPLEX EASY under ceiling DUPLEX EASY floor standing DUPLEX EASY floor standing flat ...

Page 20: ...cover and the unit Tighten four screws for attaching the lid and upper part of the unit SK cover 6 11 Filter types The basic version of the equipment is supplied with a Class G4 filter cloth in a stainless frame with a Class F7 cloth available as an optional extra 6 12 Installing optional accessories The following external pre heaters or reheaters can be connected to the unit An EPO PTC external a...

Page 21: ...troller CPA Installation on the wall 7 2 Permanent disballancing of supply and exhaust fans The unit it must be disconnected from power supply before any intervention with Use the MX terminal block mounted on terminals inside the unit under the hood blue accessory on terminals Me and Mi to disballance performance of Mi exhaust and Me supply fans The disballance can be a maximum of 30 Turn adjustme...

Page 22: ...out the air filters Unscrew sensor T1 from its original position Pull it out of the terminals red Put the sensor in its new position Screw it into the guide Insert it into the terminals either polarity Unscrew sensor T2 from its original position Pull it out of the terminals blue Unscrew the screw from the fan Put the sensor in its new position Screw sensor T2 on Insert it into the terminals eithe...

Page 23: ...23 7 4 Wiring diagram ...

Page 24: ... between 25 C and 45 C and relative air humidity up to 70 in an environment where there is no risk of fire or explosion of flammable gases and fumes not containing organic solvents or aggressive substances that might damage the mechanical parts of the equipment If there is a danger of such gases and fumes temporarily entering the duct system e g floor bonding painting the equipment must be switche...

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