FOUR-FHR Counter Flow Heat Recovery Unit. is a registered trademark of Doğu İklimlendirme A.Ş.

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1 FOUR-FHR is a registered trademark of Doğu İklimlendirme A.Ş.

2 Venues Breathe with DOGU HVAC Systems! DOGU HVAC founded in 1999, started its activities in order to manufacture HVAC Equipment and Air Handling Units. Now, it manufactures in 3 main groups including HVAC Equipment, HVAC Devices and Kitchen Ventilation according to European norms. DOGU presents all of the products in the device group to the market with the Four Season brand. DOGU HVAC operates in 2 plants in Izmir, size of 25. m² closed and totally 45. m² area with 13 different types of products. In addition to center office, 3 branches in Istanbul, Ankara and Antalya in Turkey and authorized dealers in many countries, are actively working for sales and after sales activities. DOGU HVAC achieved a rapid growth with its strong sales network, more than 25 employees, wide production capacity and advantage of complete certification, adapting the principle of Customer Satisfaction and Fefect Policy. Thus DOGU HVAC presents in more than 4 countries. DOGU HVAC R&D department developed new products, such as Make-Up Kitchen Hood, Recirculated Laminar Airflow Unit, Single Piece Square Ceiling Diffuser and Ecology Units, and became the first manufacturer of these products in Turkey. DOGU HVAC guaranteed its quality of management by having advantages of ISO 91, ISO 11, ISO 11 certifications. Air Handling Units have EUROVENT, TUV Hygiene (in accordance with DIN , VDI 622-1, DIN EN 1353 standards), CE, TSEK, GOST-R certifications; Fire Dampers have EN and EN CE certifications; Smoke Control Dampers have EN and CE certifications; Kitchen Ventilation Products have TSE, CE and GOST-R quality certifications.

3 Supply Air Filter (M5+F7) 2. Bypass Damper 3. Control Box 4. Extract Filter 5. Extract Fan 6. Counter-Flow Heat Exchanger 7. Supply Fan FOUR-FHR Low sound level high efficient EC fans. Recuperator efficiency up to 94%. Optional electrical heater or heating /cooling coil. 3 stage air flow speed control. (All stages can be set between -) Full integrated plug & play control system. Bypass damper. (Night cooling, freecooling and anti-freeze protection of the heat exchanger) Filters Large filtering area for energy efficiency and long service period. (up to 6 months) M5 filters on both supply and extract air side. Optional F7 filter for supply side available as well. Heat Exchanger High efficiency aluminium counter flow heat exchanger. Efficiency up to 94%. (calculated for balanced air flows) Special application for the anti-freeze protection. SPI = SFP = P (W) E q (m³) v h Psfm+Pefm (kw) qmax (m³) s [According to EN 13142] [According to EN 13779] Fans SPI (W/m 3 /h) SFP (kw/m³/s) SFP Class EN Preferred EC plug fans for low power consumption and low sound level. 1 years lifetime. (4. hours) FHR-17 FHR-25,295,264 2,11 1,9 SFP Class 5 SFP Class 4 FHR-3,274 1,97 SFP Class 4 FHR-45,28 2,2 SFP Class 5 FHR-65,278 2 SFP Class 4 FHR-85,33 2,38 SFP Class 5 FHR-11,41 2,98 SFP Class 5 *SFP and SPI values are calculated for both supply and exhaust fans. * DOGU HVAC reserves the right to introduce changes of parameters and sizes in the process of improvement of the devices. 1

4 FHR-17 SUPPLY AIR EXHAUST AIR 25 6% 7% 8% 6% 7% 8% 9% % 3 1 6% 7% 8% 6% 7% 8% 9% % 3 1 SPECIFIC FAN POWER - SFP kw / (m³s) SFP 2,5 SFP 2, SFP 1, Temperature Efficiency (%) C C FHR-25 SUPPLY AIR EXHAUST AIR 9 9% 8% 3 7% 3 6% 1 1 6% 7% 8% 9% % 8% 3 7% 3 6% 1 1 6% 7% 8% 9% * DOGU HVAC reserves the right to introduce changes of parameters and sizes in the process of improvement of the devices.

5 SPECIFIC FAN POWER - SFP kw / (m³s) 9 3 SFP=2, SFP=1,5 SFP= Temperature Efficiency (%) C 86-5 C FHR-3 SUPPLY AIR EXHAUST AIR % 7% 8% 6% 7% 8% 9% % % 8% 7% 3 3 6% 1 1 6% 7% 8% 9% SPECIFIC FAN POWER - SFP kw / (m³s) 9 SFP = 2 3 SFP = 1,5 SFP= Temperature Efficiency (%) C 81-5 C * DOGU HVAC reserves the right to introduce changes of parameters and sizes in the process of improvement of the devices. 3

6 FHR-45 SUPPLY AIR EXHAUST AIR 9 1 9% 8% 3 7% 6% 1 6% 7% 8% 9% % 8% 3 7% 6% 1 6% 7% 8% 9% 3 SPECIFIC FAN POWER - SFP kw / (m³s) 9 3 SFP = 2 SFP = 1,5 1 SFP = 1 3 Temperature Efficiency (%) C 8-5 C FHR-65 1 SUPPLY AIR 6% 7% 8% 9% 6% 7% 8% 9% EXHAUST AIR 1 1 9% 9% 1 8% 1 8% 7% 6% 7% 6% * DOGU HVAC reserves the right to introduce changes of parameters and sizes in the process of improvement of the devices.

7 1 SPECIFIC FAN POWER - SFP kw / (m³s) 1 SFP=2 SFP=1,5 SFP= Temperature Efficiency (%) C 8-5 C 75 3 FHR-85 SUPPLY AIR EXHAUST AIR 1 1 6% 7% 8% 6% 7% 8% 9% % % 8% 7% 6% % 7% 8% 9% SPECIFIC FAN POWER - SFP kw / (m³s) 1 1 SFP=3 SFP=2 SFP=1, Temperature Efficiency (%) C 85-5 C * DOGU HVAC reserves the right to introduce changes of parameters and sizes in the process of improvement of the devices. 5

8 FHR-11 SUPPLY AIR EXHAUST AIR % 125 8% 3 7% 75 6% 25 6% 7% 8% 9% % 1 8% 7% 6% % 7% 8% 9% SPECIFIC FAN POWER - SFP kw / (m³s) SFP=3 SFP=2 25 SFP=1, Temperature Efficiency (%) C 85-5 C * DOGU HVAC reserves the right to introduce changes of parameters and sizes in the process of improvement of the devices.

9 FANS FHR-17 FHR-25 FHR-3 FHR-45 FHR-65 FHR-85 FHR-11 SUPPLY FAN Voltage(V) 23V~1 23V~1 23V~1 38~3 38~3 38~3 38~3 SUPPLY FAN RPM(1/min) SUPPLY FAN Power/current(W/A) 49W/2,2A W/2,2A 73W/3,2A 114W/1,8A 185W/2,9A 3W/4,6A 537W/8,3A EXTRACT FAN Voltage(V) 23V~1 23V~1 23V~1 38~3 38~3 38~3 38~3 EXTRACT FAN RPM(1/min) EXTRACT FAN Power/current(W/A) 49W/2,2A W/2,2A 73W/3,2A 114W/1,8A 185W/2,9A 3W/4,6A 537W/8,3A FILTERS SUPPLY FILTER Class M5+F7 M5+F7 M5+F7 M5+F7 M5+F7 M5+F7 M5+F7 EXTRACT FILTER Class M5 M5 M5 M5 M5 M5 M5 INSULATION mm CONTROL SYSTEM integrated integrated integrated integrated integrated integrated integrated FHR-17 FHR-25 FHR-3 FHR-45 FHR-65 FHR-85 FHR-11 MAXIMUM AIR FLOW (m³/h) P(EXTERNAL) (Pa) NOMINAL AIR FLOW (m³/h) P(EXTERNAL) (Pa) 1 1 * DOGU HVAC reserves the right to introduce changes of parameters and sizes in the process of improvement of the devices. 7

10 L W H L1 W1 A B C FHR FHR *All units are in mm. 8 * DOGU HVAC reserves the right to introduce changes of parameters and sizes in the process of improvement of the devices.

11 L W H L1 W1 A B C FHR FHR FHR FHR FHR *All units are in mm. * DOGU HVAC reserves the right to introduce changes of parameters and sizes in the process of improvement of the devices. 9

12 Operation Description Availability On / Off Display Display Fan Speed Control Fan Speed Control Fan Speed Control Bypass Damper Function ModBus Filter Function Control panel or external start stop function is available. Digital control panel is available. Wireless controller is avaliable as option. 3 steps fan speed control of supply and exhaust fan is available. Constant air flow is available with pressure sensors. Airflow control based on the air quality sensor is available. Free cooling is available, by controlling the indoor and outdoor air conditions. It controls all functions of unit via PC or central control system board. There are 2 alternatives to control filters: Alternative 1: It records run time of the unit and when set time expires, control panel gives an alert for filter change. Alternative 2: Filter change time can be controlled with pressure switch mechanically. By this way, control panel gives an alert when f ilter needs to be changed. Optional Optional Optional Boost Function It is used in order to increase fan speed: Alternative 1: Via boast button on the control panel. Alternative 2: Via dry contact or light power input (23V) on PCB board. Safety Fire Alarm Function Wireless Sensors It automatically stops operating in case of interfering to the unit while it is working. It will be active in case of f ire. Upon request, wireless CO2, differential pressure, temperature and humidity sensors are avaliable. Optional Heating Coil Heating coil valves on the devices which include optional heating coil, are controlled by proportional valve motors with PID logic and sensitivity. Optional Frost Control Optional heating coils also include frost thermostat to prevent coil freeze. Optional 1 * DOGU HVAC reserves the right to introduce changes of parameters and sizes in the process of improvement of the devices.

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16 18218 Factory İTOB Organize Sanayi Bölgesi 11 Sk. No: Tekeli, Menderes, İzmir/TURKEY Tel: Faks: İstanbul Area Ağaoğlu My Office Barbaros Mah. Çiğdem Sk. No: 1 Kat: 4/18 Ataşehir, İstanbul/TURKEY Tel: Faks: Ankara Area Lizbon Cad. (Eski 165 Cad.) No: 55/14 Öveçler, Çankaya, Ankara/TURKEY Tel: Faks: