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KOMFORT EC L S6

Fig. 1. Unit design and operating logic

DESIGN

The unit has a compact double-skinned aluzinc casing, internally heat- and 

sound insulated with a 25 mm mineral wool layer. 

The casing is equipped with adjustable levelling feet on the bottom panel 

that enable the unit installation on the floor. The KOMFORT EC L300 S6, 

L1/300 S6 and L400 S6 models include a fixing bracket for wall mounting. 

The spigots for connection to the air ducts are located at the side of the unit 

and are equipped with rubber seals for airtight connection to the air ducts. 

The service access to filters is on the side panel which can be installed on 

the left or on the right, seen on the supply air flow direction, during the unit 

mounting. 

The unit is equipped with high-efficient external rotor EC motors.

The KOMFORT EC L300 S6, L1/300 S6 and L400 S6 units are equipped with 

constant flow fans and forward curved blades.

This fan design ensures set air flow even in case of variable resistance in the 

ventilation system, i.e. in case of using a higher filter class.

The  KOMFORT EC L600 S6 unit is equipped with high-efficient external 

rotor EC motors and impellers with backward curved blades. EC motor 

technologies meet the latest engineering demands for saving energy and for 

high-efficient ventilation.

The motors are equipped with integrated  overheating protection with 

automatic restart and ball bearings for longer service life.

The plate cross-flow polystyrene heat exchanger is used for heat recovery in 

the unit. The drain pan under the heat exchanger block is used for condensate 

collection and drainage. 

The integrated freeze protection system is used to prevent  the heat 

exchanger freezing. In case of a freezing danger communicated by the 

temperature sensor the supply fan is turned off. The warm extract air warms 

up the heat exchanger. 

After that the supply fan is turned on and the unit reverts to the normal 

operation mode. 

If air temperature in the exhaust air duct downstream of the heat exchanger 

is below +3 °C the supply fan is turned off. As air temperature rises above 

+3 °C the unit reverts to the previous operation mode. 

Two built-in panel filters with filtering class G4 provide efficient supply and 

extract air filtration.

Optionally a supply F7 filter may be used.  

The unit includes an integrated control system, a multifunctional control 

panel with LCD display and a remote controller. The delivery set includes a 

10 m long cable for connection of the control panel to the unit.

OPERATING LOGIC

Cold fresh air from outside flows through the heat exchanger and is moved to 

the room with the supply fan.

Warm extract air is extracted from the room with the exhaust fan and is 

moved through the heat exchanger, where it transfers its heat energy to the 

intake air. After that it is exhausted outside. 

Heat energy of warm and humid extract air is transferred to the cold fresh air. 

The air flows are fully separated while flowing through the heat exchanger. 

In summer the heat exchanger performs reverse and transfers cold from the 

cooled extract air to the warm fresh air. This contributes to better performance 

of the air conditioner in ventilated premises.

In summer, when the indoor and outdoor temperature difference is low heat 

recovery is not reasonable. In this case the heat exchanger can be temporary 

replaced with a summer block for warm seasons. Available upon separate 

order.

DELIVERY SET

 

Air handling unit 

 1 item;

 

Operation manual 

− 

1 item;

 

Wall-mounted control panel 

 1 item; 

 

Remote control 

 1 item; 

 

Packing 

 1 item.

 

                WARNING

                                   

                                   

Make sure the unit has no visible transport damages 

 

               while accepting the goods.

Check the ordered and the delivered goods for compliance.

!

Drain pipe

Supply filter 

Exhaust fan

Heat exchanger

Drain pan

Supply fan

Extract filter 

Limit switch 

Control unit 

EXTRACT AIR

INTAKE AIR

EXHAUST AIR

SUPPLY AIR

Summary of Contents for KOMFORT EC L S6 Series

Page 1: ...OPERATION MANUAL KOMFORT EC L S6 AIR HANDLING UNIT WITH HEAT RECOVERY EN ...

Page 2: ...nufacturer s warranty 4 Design 4 Operating logic 4 Delivery set 5 Technical data 6 Mounting 10 Condensate drainage 11 Control panel mounting 11 Connection to power mains 12 Unit control 18 Troubleshooting and fault handling 19 Technical maintenance 21 Acceptance certificate 21 Connection certificate 21 Warranty card CONTENTS ...

Page 3: ...RANSPORTATION AND STORAGE RULES Transportation of the unit is allowed by any vehicle provided the unit is transported in the original package and is protected against weather and mechanical damages Use hoist machinery for handling and transportation to prevent possible mechanical damages of the unit Fulfil the requirements for transportation of the specified cargo type during cargo handling operat...

Page 4: ...m extract air warms up the heat exchanger After that the supply fan is turned on and the unit reverts to the normal operation mode If air temperature in the exhaust air duct downstream of the heat exchanger is below 3 C the supply fan is turned off As air temperature rises above 3 C the unit reverts to the previous operation mode Two built in panel filters with filtering class G4 provide efficient...

Page 5: ... 1 230 Max unit power W 140 210 334 Max unit current A 1 2 1 6 2 2 Max air capacity m3 h 300 400 810 RPM min 1 2300 2600 2860 Sound pressure level at 3 m distance dB A 24 45 30 45 Transported air temperature C 25 up to 60 C Casing material Zinc aluminium Insulation 25 mm mineral wool Extract filter G4 Supply filter G4 F7 Connected air duct diameter mm 150 160 200 250 Weight kg 36 67 83 Heat recove...

Page 6: ... other protecting device at outlet from the air duct with a mesh width not exceeding 12 5 mm MOUNTING Safety precautions The unit must be mounted to a rigid and stable structure The unit must be suspended using anchor bolts Before starting mounting check that the mounting structure has sufficient loading capacity for the unit weight The unit mounting is allowed only after power cut off and full st...

Page 7: ...ide 1 Remove 6 screws 2 Open the back panel and disconnect the ground cable Then remove the back panel 1 2 3 Cover dismantling on current service side 1 Remove six triangular screws 2 Open the cover and disconnect the ground cable Remove the cover Ground cable 1 2 4 Limit switch dismantling on current service side 1 Remove the spade terminals and disconnect the limit switch from the wires 2 Press ...

Page 8: ...he limit switch in the fixing bracket 3 Cover the wires with spade terminals to connect the limit switch 6 Cover mounting on selected service side 1 Connect the ground cable to the service panel on selected service side 2 Install the service cover and fix with six triangular screws 7 Back panel mounting Install the service panel and fix it with six screws ...

Page 9: ...ery set The unit is mounted to the wall with a specially designed fixing bracket Table 5 and the unit is installed on the floor using adjustable levelling feet Note wall mounting is not applicable for KOMFORT EC L600 S6 1 Fix the fixing bracket on the wall While mounting the fixing bracket consider the wall material and the unit weight 2 Install the unit on the fixing bracket 3 Tighten the triangu...

Page 10: ...ses fig 6 While laying the hoses provide the slope downward min 3 Fill the system with water prior to connecting it to power supply The U trap must always be filled with water Before starting the unit fill the drain system with water and keep the U trap always filled with water Provide free drainage for the condensed water otherwise it is accumulated inside the unit which may result in the equipme...

Page 11: ...ECTION TO POWER MAINS WARNING Read the operation manual prior to any electric installations Connection of the unit to power mains is allowed by a qualified electrician only The rated electrical parameter are stated on the rating plate No modifications of internal connections are allowed and will result in void warranty service Connect the unit only to power mains with valid electric standards Foll...

Page 12: ...r of the X3 terminal block are enclosed in brackets fig 8 PK contact for connection of the fire alarm panel While connecting the automatic fire alarm system remove the jumper between the terminals 1 and 2 In case of fire a normally closed dry contact opens the control circuit from the central fire alarm panel H contact for connection of the humidity sensor or CO2 sensor The humidity sensor or CO2 ...

Page 13: ... fig 10 Fig 10 Wall mounted control panel and remote controller Fig 11 Wall mounted control panel display in OFF status Fig 12 Wall mounted control panel display in ON status Unit ON OFF Operation control buttons see details below Fan speed control buttons Remote controller Wall mounted control panel Remote Controller Unit ON OFF Fan speed UP FanspeedDOWN High speed ON Low speed ON Medium speed ON...

Page 14: ...r Medium speed activation from the remote controller High speed activation from the remote controller 3 Timer The timer ensures automatic changeover from a current operation mode into high speed mode and revert to the previous operation mode in set time period To activate deactivate timer Timer activation using the wall mounted control panel pressing one time sets the timer for 20 minutes each sub...

Page 15: ... and hold for 3 sec Adjusted speed selection or Supply fan power step up down Each pressing increases decreases the fan power by 1 press and hold press stepping up stepping down Current supply fan power indication during adjustment Current supply fan power Supply fan setup indication when pressed Extract fan power step up down Each pressing increases decreases the fan power by 1 press and hold pre...

Page 16: ...aintenance section After the filter replacement connect the unit to power supply and press a respective button on the wall mounted control panel or on the remote controller to start the unit or Resetting motor hours press synchronously and 7 Date and time setting Press a respective button on the wall mounted control panel to turn the unit off Changeover to the date and time setup mode press and ho...

Page 17: ...using the wall mounted control panel Week day Time Entry number Fan speed press and hold press Selection of the scheduled operation mode parameters The set point blinks during setup press and hold press or Setting the required set point Parameters for scheduled operation setup Entry number each week day has four entries Week day setting week day Fan speed setting the fan speed for a current entry ...

Page 18: ...he impeller blades Automatic switch tripping Short circuit in power grid Turn the unit off and contact your seller for troubleshooting Low air flow Too low set speed Set higher speed The filters and the fans are soiled the heat exchanger is soiled Clean or replace the filters fans and heat exchanger The air dampers the supply diffusers or the exhaust grilles are closed or soiled Remove and clean t...

Page 19: ...times per year The unit technical maintenance includes regular cleaning and other works 1 Filter maintenance 3 4 times per year Dirty filters increase air resistance and decrease air capacity of the unit Clean the filter with a vacuum cleaner or flush it with water After two consecutive cleanings the filter must be replaced Install dry filters only Contact a local distributor for the filters state...

Page 20: ...results in the unit capacity decrease Clean the fan with a soft cloth or a brush Cleaning with water abrasive detergents sharp object or chemicals is not allowed 4 Condensate drain system maintenance once per year Extract air particles may accumulate in the condensate drain system and cause its clogging Pour a drain pan under the unit with water to check free water flow Clean a U trap and the drai...

Page 21: ...EEC and CE marking Directive 93 68 EEC on the approximation of the laws of the Member States relating to electromagnetic compatibility This certificate is issued following test carried out on samples of the product referred to above Approval mark Manufacturing date____________________ Company Name Date Signature The air handling unit with heat recovery KOMFORT EC L300 S6 KOMFORT EC L1 300 S6 KOMFO...

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Page 24: ...www blaubergventilatoren de Komfort EC _L_v 1 3 _EN ...

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