Reliable Rooftop Packaged Unit with Economizer Price

Origin: China
Category: Rooftop
Supply Ability: 80
Payment Terms: TT , LC , Others
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Description

It is one of the most significant highlights of this rooftop as it augment occasional proficiency by decreasing the utilization of thermodynamic cooling in mid season.Thermodynamic cooling can be supplanted by Free Cooling when open air temperature is beneath the structure set point setting aside to 15% on yearly vitality utilization. 

Rooftop units are provided with economizer and natural air hood to improve comfort through better outside air the executives and permit vitality investment funds with free cooling.


Structure

Panels and frame are made from galvanized steel protected with polyester powder painting to ensure total resistance to atmospheric agents.

Direct expansion coils with condensate drain tray.


Hermetic compressor

High efficiency scroll compressor for the whole range, with built-in thermal overload cut-out and crankcase heater, mounted on rubber vibration dampers.

Ripple type acoustic insulation for compressor section, and thermal insulation for coil and fan section, low noise.


Centrifugal fan

Forward curve centrifugal fans for air treatment section and axial fans for condensation section.

Front, side and underside air discharge of the treatment unit.

High external pressure, long air supply distance.


Electric panel

Electric panel consists of breakers and contactors for compressors and fan motors, phase sequence relay and other necessary protection devices for the main components.


Easy operation line controller

Cooling/Heating/Auto

Error indication

Timing on/off


Optional

Economizer with fresh, return air dampers and fresh air hood

Free cooling function for low ambient temperature

Low ambient control device for operation of outdoor units at ambient temperatures from less than 20°C down to -10°C

BMS devices

T3 (Tropical climate)

Roof curb

Metal/aluminum filter

Heat recovery to 100%

Evaporating section: double skin with 50mm polyurethane foam

Optional water heating coil

Metal or plastic mesh on condenser coil

Optional supply/return air configurations

Upgraded plug fan

G4 filter, plate and bag filter


Exhaust air

1 Gravity exhaust damper

Gravity exhaust damper Installed with economizer assembly, gravity exhaust damper relief pressure when outside air is being introduced in the system. It is a cheap and smart way to avoid over pressure in a building.

2 Power exhaust fans

Installed with economizer assembly, it provides exhaust air pressure relief when high levels of fresh air are being introduced in the system.

Interlocked to run when return air dampers are being closed and supply air blower is in operation. The extraction fans run when outdoor air dampers are at least 50% open (adjustable). It is also overload protected. A gravity exhaust damper is supplied with this option to prevent air from entering the unit during shutdown. The power exhaust fans have been size to exhaust 50% of the nominal air flow of the unit.

                                                             

                                               Cooling/heating mode without fresh air                                                                                          Free-cooling mode

                                               Cooling/heating mode with fresh air

①Fresh air    ② Return air    ③ Supply air    ④Exhaust air


Technical Data

Model Unit RTU10 RTU12 RTU14 RTU16 RTU20 RTU25 RTU28 RTU32 RTU36 RTU42
Cooling*
Cooling capacity* kW 10.6 12.1 14.3 16.2 21.2 24.2 28.6 32.4 36.2 41.6
Ton 3.0 3.5 4.1 4.6 6.1 6.9 8.2 9.3 10.3 11.9
Nominal current* A 7 7.7 9.3 10 13.4 17.7 18.7 19.5 23.3 25.7
Nominal power input* kW 3.55 4.17 4.92 5.37 6.75 8.25 9.95 10.5 12.7 13.85
Heating*
 
Heating capacity*
kW 11.3 12.8 15 17.3 22.6 25.6 30.2 34.6 38 44.6
Ton 3.2 3.7 4.3 4.9 6.5 7.3 8.6 9.9 10.9 12.7
Nominal current* A 6.5 7.2 8.6 9.2 12.4 14.3 17.3 18 21.3 23.7
Nominal power input* kW 3.26 3.83 4.5 5 6.17 7.57 9.1 9.55 11.6 12.65
Power supply 380~415v/3ph/50Hz
Refrigerant charge Kg 3.2 4.2 5 5.8 7.3 8.4 9.8 10.5 12 13
Compressor
Qty Nr. 1 1 1 1 2 2 2 2 2 2
Type Scroll
Air treatment section
Centrifugal fans number Nr. 1 1 1 1 1 1 1 1 1 1
Drive type / Direct drive Belt drive
Air flow m3/h 1950 2400 2920 3150 4250 5400 5700 6300 6800 7900
External static pressure Pa 150 150 180 180 150 235 305 290 270 250
Motor power kW 0.5 0.5 0.7 0.7 0.7 1.1 1.5 1.5 2.2 2.2
Condensation section      
Axial fans number Nr. 1 1 1 1 1 1 1 1 2 2
Air flow m3/h 4100 4150 6100 7020 8640 9430 11230 12300 14200 18830
Motor power kW 0.25 0.37 0.37 0.55 0.45 0.55 0.75 0.75 2*0.37 2*0.37
Dimensions
Length mm 1350 1350 1350 1350 1820 1820 1820 1820 2540 2540
Width mm 990 990 990 990 1400 1400 1400 1400 1860 1860
Height mm 880 880 880 880 1100 1100 1100 1100 1180 1180
Net weight kg 240 250 260 260 380 430 480 500 780 800
Sound pressure level ** dB(A) 67 68 70 71 72 70 72 72 72 72


Model Unit RTU48 RTU55 RTU64 RTU72 RTU88 RTU104 RTU120 RTU150 RTU170 RTU190
Cooling*
 
Cooling capacity*
kW 47.2 53.2 63.3 71.4 87.2 103.3 118.8 153.4 168.6 188.5
Ton 13.5 15.2 18.1 20.4 24.9 29.5 33.9 43.8 48.1 53.9
Nominal current* A 31.3 32.5 37 45.5 53 68.7 79.7 88.5 113.8 135.3
Nominal power input* kW 16.4 18.7 21.5 26.5 30.6 39.8 46 55 65.8 78.3
Heating*
 
Heating capacity*
kW 50.2 56.4 67 75.6 93.3 110.5 126.8 164.3 182 202
Ton 14.3 16.1 19.1 21.6 26.7 31.6 36.2 46.9 52 57.7
Nominal current* A 29 30.3 34.3 42 47.2 62.3 74.2 84.6 102.5 124.8
Nominal power input* kW 15 17 19 24.1 27.3 36 43 49 59.3 72.2
Power supply 380~415V/3Ph/50Hz
Refrigerant charge Kg 13.5 15.2 18.1 20.4 24.9 29.5 34 43.8 48 54
Compressor
Qty Nr. 2 2 2 2 2 4 4 4 4 4
Type Scroll
Air treatment section
Centrifugal fans number Nr. 1 1 1 1 1 1 1 1 1 1
Drive type / Belt drive
Air flow m3/h 9350 10450 11700 14400 16600 19940 22000 29000 31400 34900
External static pressure Pa 290 280 275 380 345 390 390 360 420 430
Motor power kW 2.2 3 3 4 4 5.5 7.5 7.5 11 15
Condensation section
Axial fans number Nr. 2 2 2 2 2 4 4 4 4 4
Air flow m3/h 19200 21420 24620 28400 37500 43680 49200 67500 72000 84000
Motor power kW 2*0.55 2*0.55 2*0.75 2*0.75 2*1.1 4*0.75 4*0.75 4*1.1 4*1.5 4*2.2
Dimensions
Length mm 2540 2540 3090 3400 3400 4700 4700 5200 5800 5800
Width mm 1860 1860 2200 2200 2200 2240 2240 2240 2240 2240
Height mm 1180 1430 1430 1590 1590 1650 1650 1650 1650 1650
Net weight kg 830 850 1200 1400 1500 1700 1750 2300 2500 2500
Sound pressure level ** dB(A) 75 73 75 75 75 75 80 80 82 84

* Performance values refer to the following conditions:

Cooling: room air temperature 27.0°C DB RH 50%, ambient air temperature 35°C.

Heating: room air temperature 21.0°C DB, ambient air temperature 7°C DB / 6°C WB.

** Noise level measured by adopting average value in the noise lab with background noise of 25 dB(A), at a distance of 1.5m high fan speed.

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