1. Dunham Bush Air Cooled Package
(Roof Top Unit)

2. 01
ACPSJ Series

3. NOMENCLATURE

4. Rooftop Units (ACPSJ) Unit Features Condenser Fan
• High Efficiency & Low Noise
• Corrosion Resistant Blade Fan
Guard Protection
Evaporator / Condenser Coil
Copper Tubes & Al. Fin
Rated to AHRI 410
Control Panel
Weather Resistance
Casing
• Acoustic Insulation
(Polyurethane Double Skinned)
• Weather/Corrosion Resistance
(With stand up to 1000 hours
salt spray test)
Compressor
High Efficiency Scroll / Inverter
CE / UL International Standards

5. ACPSJ Series Key Features…
ACPSJ series (Air Cooled Rooftop Unit) with below features and provisions
Downflow – supply & return fans
Backward curve plenum fans
Cooling, Heat pump, natural gas heat
Inverter Scroll Compressor
Airside Economizer
Airflow (Nominal)
4, ,000 CFM
Capacity
15 – 130 tons (189 – 1585 MBH)
Model sizes
9 sizes (15, 25, 35, 45, 55, 80, 100, 115 & 130)
Duty
Cooling; Heat Pump; Gas Heat Option
Return / Supply
Downflow (Optional Horizontal)

6. 02
Air Cooled Package Options

7. 2. ACPSJ Series Key Features… Durable Cabinet Construction
Heavy gauge GI with epoxy painted for excellent finished, weatherability and corrosion resistance. Evaporator section of 1” thick double skin panels with injected PU insulation. Designed for outdoor installation on a roof curb.
Compressor
Fixed speed, high efficiency scroll compressor with crankcase heater. One or multi-stages of capacity control.
Evaporator Coil
Staggered row of 3/8” or ½” OD inner grooved copper tube with mechanically bonded aluminium fins.
Evaporator Fan & Motor
Model : High efficiency direct driven backward curved plenum fan with electronically commutated (EC) motor provides variable speed control.
Model : SWSI backward curved plenum fan, direct driven premium efficiency TEFC motor with factory installed VFD for speed modulation.
Condenser Coil
Staggered row of 3/8” OD inner grooved copper tube with mechanically bonded aluminium fins (hydrophilic fin for heat pump models). Integral with sub-cooling circuit.
Condenser Fan & Motor
Direct driven propeller fan with class H insulation motor.
Filters
2” MERV 8 filters
Drain Pan
Designed to incorporate sloped gutter for complete condensate removal for high IAQ.
Access
Easy open hinged access doors for easy access to all internal components.
Control
DB Director features interoperability with Modbus RTU or BACnet communications for easy integration into building automation system.
EC Fan
Plenum Fan

8. 2. ACPSJ Series Key Features… Options Inverter Compressor
Enhanced part load efficiency,
lower operating cost.
Gas-Fired Heating
Natural gas-fired unit integral within unit.
Tubular heat exchanger constructed of stainless steel.
Economizer
Available with a 0-30% outdoor air or a 0-100% economizer
with fully modulating low leak dampers. Return or exhaust fans are
also available as an option.
EC Evaporator Fan
Multiple high efficiency backward curved variable EC fan for best precise airflow control, building pressure control and energy saving purpose.
EC Condenser Axial Fan
Direct driven axial EC fan provides variable speed for best head pressure
/ low ambient control and energy saving.
Others
Refrigeration service valves, coil fin coating, condenser coil guard,
4” MERV 14 filters, UVR, electric heater, and many more……….

9. 2. ACPSJ Series – UV lights
Ultraviolet light possesses just the right amount of energy to break organic molecular bonds. As micro-organisms pass by the UV rays radiated from the ultraviolet lamp, this bond breakage translates into cellular or genetic damage for micro-organisms, such as germs, viruses & bacteria. This results in the destruction of the micro-organisms.

10. Discharge Orientation
Air Cooled Package CUSTOM Options
Discharge Orientation
Side Discharge
Downflow Discharge
Up-Flow Disharge
Top View
Side View

11. Air Cooled Package Options
Elastomer Insulation
Coil Corrosion Protection
Pressure Gauge
Replaceable Core Filter Drier
Service Valve
Advance Controller
Lock Out Stop
Crankcase Heater

12. Air Cooled Package Options
Evaporator Blower Isolator
Electronic Expansion Valve
Hot Water Heating Coil
Differential Pressure Switch for Evaporator Blower
Liquid Line Solenoid Valve
Indicating Lights
Stainless Steel Fasteners
Stainless Steel Drain Pan

13. 03
Air Cooled Package Custom Options

14. HEPA Filters ACPSJ080 with HEPA filters
Air Cooled Package CUSTOM Options
HEPA Filters
Cabinet size upgrade
ACPSJ080 with HEPA filters

15. Inverter Compressor Technology
Air Cooled Package CUSTOM Options
Inverter Compressor Technology
Inverter compressor on first stage
Inverter compressor for all stages
R-410a
Improved IPLV

16. Dual Plenum/EC Fan options
Air Cooled Package CUSTOM Options
Dual Plenum/EC Fan options
Downflow – supply & return fans
Backward curve plenum fans
ACPSJ055 with dual fans

17. Heat Recovery Wheel ACPSJ035 with Heat Recovery Wheel
Air Cooled Package CUSTOM Options
Heat Recovery Wheel
Cabinet size upgrade
ACPSJ035 with Heat Recovery Wheel

18. 100% Outside Air Air Cooled Package CUSTOM Options
Modulating Hot gas reheat

19. Products That Perform … By People Who Care
Thank You
Products That Perform … By People Who Care
Product That Perform … By People Who Care