PETRA High Efficiency 100% Make Up Outside Air Cooled Roof Top Units .

100% Make Up Outside Air Cooled Roof Top Unit with Recovery Wheel 3 to 30 Nominal Tons Introduction PETRA High Efficiency 100% Make Up Outside Air Cooled Roof Top Units are the Ideal Solution for outdoor installed units. It has a wide capacity range (3-30 nominal tons) with outstanding AHRI efficiency (up to 16 EER). It provides muitiple added values to customer such as lower sounds, compact foot print, recovery option & easy accessible components Compressors & refrigeration components are allocated in a seperation compartment with same unit 2” double wall panels with full access doors or removable panels. This enhance sound damping for the unit. All units are fully assembled & tested in factory before dispatch Sound Heavily attenuated equipment wall, double wall 2” inject foam Vibration isolators to avoid and reduce vibration including RIS,1” or 2” Spring Variable speed compressors operate smooth and quite Compressors heavy duty sound Jacket that can attenuate up to 10-12 DB (Optional) 2” perforated fan section (Optional) Unit rigid structure design & component allocated allows more sound damping 1 / 1 OCTAVE BAND 1 / 3 OCTAVE BAND Petra Acoustic Lab is a non-reverberant lab, specially designed to measure the direct noise levels from the noise source using the latest technology in sound measurement. The lab is designed according to ANSI/AMCA standard and AHRI standard. To ensure very precise measurements the background noise level of the room is around 20 dB Petra Acoustic Lab is equipped with superior sound measuring software and instruments that are capable of taking the noise readings for 1/1 Octave band spectrum and 1/3 octave band spectrum from [8 Hz - 20 kHz] Petra Acoustic Lab is the largest sound lab across the Middle East. The sound tests are conducted in accordance with AHRI 260, AHRI 350, and ISO BS 3744 standards Petra Lab is certified by AHRI to conduct AHRI testing for air cooled chillers up to 400 Tons & water cooled chillers up to 1000 Tons 1

100% Make Up Outside Air Cooled Roof Top Unit with Recovery Wheel 3 to 30 Nominal Tons Performance Table Model CFM Nominal TR EER PPH-03 PPH-04 PPH-05 PPH-06 PPH-07 PPH-10 PPH-12 PPH-15 PPH-20 PPH-25 PPH-30 1,125 1,500 1,875 2,100 2,450 3,500 4,200 5,250 7,000 8,750 10,500 3 4 5 6 7 10 12 15 20 25 30 15.7 15.8 15.4 15.7 15.8 15.2 15.4 14.1 15.8 15.3 14.2 *Data Based on AHRI Conditions 95 F Ambient & 91/73 F EDB/EWB Model Layout ELEVATED VIEW COMPRESSOR COMPARTMENT SUPPLY FAN ROOF COVER RECOVERY WHEEL 2” FILTER 2” FILTER OA HOOD W/SCREEN OA EXHAUST FANS GAS HEATER SA RA EXHAUST GRAVITY SHUTTER 2

100% Make Up Outside Air Cooled Roof Top Unit with Recovery Wheel 3 to 30 Nominal Tons Energy Wheel Energy Recovery Solution meeting the ASHRAE ventilation & energy standards Improving indoor air quality and reducing total HVAC equipment capacity Cost-efficient, sustainable and quick way to reduce global energy consumption, gives better indoor air quality (IAQ) and protect buildings and environment Standard 8” deep Aluminum wheel rotor to provide best solution for cross recovery Easy Maintenance using air Blow & Vacuum Cleaning Available two types of Energy Wheels, Aluminum 8” deep (standard) and Polymer 4”-6” deep (optional) Filters Factory installed 2” pleated filter (MERV 8) MERV 13 efficiency and 4” thick filter are optional Exhaust Fans Standard SWSI EC fans. SWSI plenum & DWDI centrifugal fans are available as optional Fans are statically and dynamically balanced EC fan is controlled by unit microprocessor controller VFD option for SWSI plenum & DWDI centrifugal fans Vibration isolators are available in rubber-in-shear, 1” open type springs or 2” seismic springs Doors Clip on PVC gasket Minimum two PVC AB Ind handles openable from inside & outside One tooled latched handle Thermally broken doors along full door parameter Internal door handle linkage with one handle (optional) 3

100% Make Up Outside Air Cooled Roof Top Unit with Recovery Wheel 3 to 30 Nominal Tons Condenser Fan Axial type statically and dynamically balanced selected for optimum efficiency and for maximum soundpower reduction. Blades are direct driven by external rotor motor type and protected by steel wire guard coated with electrostatic polyester powder coating oven baked Fan/motor assembly come in one single peice Condenser Coil Condenser coils are manufactured from copper tubes mechanically expanded into aluminum fins. All coils are air pressure tested at 900 Psi under water to avoid leakage. The coils undergo dry chemical cleaning after manufacturing for optimum system cleanness Petra offers as optional Copper tubes Copper fins coil, polyurethane post-coating protrction & aluminum microchannel coils Coil guard fabricated from gauge 18 galvanized steel sheet metal & painted with electrostatic powder paint, to provide protection for condenser coil Control Panel NEMA 3R minimum panel enclosure Factory installed ALC controller and electrical disconnect with easy access user inter face Standard communicating control protocol is BACnet (IP or MSTP), Modbus or Lon Talk as optional Panel door has a door retainer to keep door open during service Wiring diagram laminated copy is inserted in door pocket Base Structural welded galvanized steel C-channel base with full supporting cross members, equipped with screwed-in lifting lugs (eye bolts) of suitable loading capacity which are fitted on a welded bracket to the side of the C- channel The base members are coated with primer sprayed paint d to tie-in the unit plastic Welded rods inside the C-channel are added protectiue cover for shipment purposes 4

100% Make Up Outside Air Cooled Roof Top Unit with Recovery Wheel 3 to 30 Nominal Tons Compressor Compartment High efficiency scroll compressors feature excellent reduction in noise and vibration, provide higher redundancy, reduces maintenance costs and enhance integrated part load values (IPLV) Optional digital scroll & VFD control compressor are available Compressors are allocated in seperate double wall 2” injected foam compartment Heating & Cooling Coil Deep DX-Coil HGRC or hot water or electric heater as optional Galvanized steel drain pan under all coils, coated with weatherproof, polyster powder electrostatic pain, oven-baked. SS double Sloped drain pan is optional FD S l D f C Standard / VFD Scroll Danfoss Compressor Standard / Digital Scroll Copeland Compressor Refrigeration Allocated in seperate double wall 2” injected foam compartment Independent/dependent circuits to provide redundancy Easy access with access doors or removable panels Brazed plate heat exchanger as standard (Shell & tube is optional) Standard thermal expansion valve, electronic expansion valve is standard with Variable compressor option Unit Cabinet & Panels Gas Heater Tubular type gas heater made of 409 SS tubes (304 SS optional) Natural gas or Propane gas Modulating kit is provided for each gas heater (up to 10:1) Single gas inlet in case of multible gas heaters Flue stack supplied and installed by others 5 Double Wall G-90 galvanized steel 2” injected foam, 3 pcf insulation density as minimum Thermally broken Panels & doors along full panel parameter (roof, floor & wall panels) 16-20 gauge painted interior and exterior panels Standard panels are galvanized steel , stainless steel and aluminum panels are optional Each panel shall have a machine applied foam gasket that seals all around its edges

100% Make Up Outside Air Cooled Roof Top Unit with Recovery Wheel 3 to 30 Nominal Tons Roof Canopy Double sloped roof canopy with standing top seams as standard Rain Gutters are provided along the full canopy perimeter to ensure positive rainwater drainage All roof canopy components are fully caulked & sealed to prevent any water leakage Roof canopy is coated with weather-proof, polyster powder electrostatic paint, oven-baked Additional rain gutters are provided for access doors/panels (if not covered by rain gutters) Paint P Electrostatic power paint – Oven baked for inner & outer skin Paint is 5000 hours salt spray test certified according to (ASTM 117 A&B) by ITS Semko/ETL Outside Air Hoods Made from G90 painted galvanized steel (20 gauge thick) Factory installed aluminum mesh moisture eliminator filters Hood is shipped loose for site installation Dampers OA & RA Dampers allocated inside unit All dampers are low leakage opposed, aluminum blades type, assembled in aluminum frame Each damper is operated by its own actuator Each damper consists of multiple airfoil blade with individual blade edge seal & PVC gear for each blade Exhaust Gravity Shutter Made from G90 painted galvanized steel (gauge 20) Painted by petra standard paint, 5000 hours salt spray test certified according to ASTM 117 A&B Internal enhanced linkage to combine all blade movement with closed cell insulation for each blade edge 6

Petra Lab is certified by AHRI to conduct AHRI testing for air cooled chillers up to 400 Tons & water cooled chillers up to 1000 Tons 1 / 1 OCTAVE BAND 1 / 3 OCTAVE BAND . 100% Make Up Outside Air Cooled Roof Top Unit with Recovery Wheel . Axial type statically and dynamically Condenser Coil balanced selected for optimum efficiency and for .