ZRO - Model ASE

ZRO Logo

Commercial/Industrial Electric Unit Heater

All ZRO - Model ASE Literature

Standard Features

  • 6.82-204.72 MBH (2-60 kW)
  • Fuel Type(s): Electricity

Color

  • Almond

Finish

  • Standard: epoxy/polyester powder paint.

Voltage

  • 208V, 240V, 480V, 1 or 3-phase.
  • Some units may be field converted from 3 to 1-phase

Construction

  • 18 and 20-gauge steel.
  • Adjustable louvers to direct air flow.
  • High-limit temperature control with automatic reset.

Fan

  • Totally enclosed factory-lubricated ball bearing motor (except for 15 to 25kW at 208/240V).
  • 58 dBA fan (2 to 10kW), 67 dBA fan (15 to 30kW) and 77 dBA fan (40 to 60kW).
  • Thermally-protected motor mounted in cold compartment.
  • Fan delay purges heater of residual heat.

Heating Element

  • Tubular heating elements; stainless steel (2 to 10kW); finned steel (15 to 60kW).
  • Concentric disposition of heating elements
  • Factory sealed element upon request.

Control

Sterling highly recommends to use a wall thermostat for greater comfort.
Any remote thermostat or relay must be connected to the heater control terminal block.

  • Factory-installed contactor and 240/208V control circuit standard (with transformer if necessary).
  • 24V relay, with or without transformer available
  • 120V control circuit available.
  • Built-in thermostat available

Warranty

  • 1 Year warranty against defects.

Installation

  • Not for residential use in the United States.
  • Horizontal mounting: - 2 to 30kW: wall or ceiling using the supplied brackets which allow 360° rotation. - 40 to 60kW: ceiling only secured by the supplied 4 hooks of suspension.
  • Vertical mounting: - 2 to 60kW: using 4 threaded rods 1/2 in. X 13 UNC (not included). - Diffuser cones available. - Maximum recommended height (horizontal): 2 to 10kW: 8 ft. (2.4 m), 15 to 30kW: 10 ft. (3 m), 40 to 60kW: 15 ft. (4.5 m).
  • Protective screen allows minimum horizontal mounting height: - United States 2 to 30 kW 6 ft. (1.8 m), 40 to 60kW: 8 ft. (2.4 m). - Canada 2 to 30 kW: 24 in. (610 mm), 40 to 60kW: 8 ft. (2.4 m).
  • 85°F (30°C) maximum operating ambient temperature.

Literature

All the Literature associated with the ZRO - Model ASE

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Performance

Performance, Materials and Features for each ZRO - Model ASE capacity model.

Name

2 kw

2 kw

3 kw

3 kw

4 kw

4 kw

5 kw

5 kw

7.5 kw

10 kw

10 kw

15 kw

20 kw

25 kw

2 kw

3 kw

4 kw

5 kw

7.5 kw

10 kw

15 kw

20 kw

25 kw

2 kw

3 kw

4 kw

5 kw

7.5 kw

10 kw

15 kw

20 kw

25 kw

30 kw

40 kw

50 kw

60 kw

Input6.82 MBH (2 kW)6.82 MBH (2 kW)10.24 MBH (3 kW)10.24 MBH (3 kW)13.65 MBH (4 kW)13.65 MBH (4 kW)17.06 MBH (5 kW)17.06 MBH (5 kW)25.59 MBH (7.5 kW)34.12 MBH (10 kW)34.12 MBH (10 kW)51.18 MBH (15 kW)68.24 MBH (20 kW)85.3 MBH (25 kW)6.82 MBH (2 kW)10.24 MBH (3 kW)13.65 MBH (4 kW)17.06 MBH (5 kW)25.59 MBH (7.5 kW)34.12 MBH (10 kW)51.18 MBH (15 kW)68.24 MBH (20 kW)85.3 MBH (25 kW)6.82 MBH (2 kW)10.24 MBH (3 kW)13.65 MBH (4 kW)17.06 MBH (5 kW)25.59 MBH (7.5 kW)34.12 MBH (10 kW)51.18 MBH (15 kW)68.24 MBH (20 kW)85.3 MBH (25 kW)102.36 MBH (30 kW)136.48 MBH (40 kW)170.6 MBH (50 kW)204.72 MBH (60 kW)
Output6.82 MBH (2 kW)6.82 MBH (2 kW)10.24 MBH (3 kW)10.24 MBH (3 kW)13.65 MBH (4 kW)13.65 MBH (4 kW)17.06 MBH (5 kW)17.06 MBH (5 kW)25.59 MBH (7.5 kW)34.12 MBH (10 kW)34.12 MBH (10 kW)51.18 MBH (15 kW)68.24 MBH (20 kW)85.3 MBH (25 kW)6.82 MBH (2 kW)10.24 MBH (3 kW)13.65 MBH (4 kW)17.06 MBH (5 kW)52.59 MBH (15.41 kW)34.12 MBH (10 kW)51.18 MBH (15 kW)68.24 MBH (20 kW)85.3 MBH (25 kW)6.82 MBH (2 kW)10.24 MBH (3 kW)13.65 MBH (4 kW)17.06 MBH (5 kW)25.59 MBH (7.5 kW)34.12 MBH (10 kW)51.18 MBH (15 kW)68.24 MBH (20 kW)85.3 MBH (25 kW)102.36 MBH (30 kW)136.48 MBH (40 kW)170.6 MBH (50 kW)204.72 MBH (60 kW)
Thermal Efficiency100%100%100%100%100%100%100%100%100%100%100%100%100%100%100%100%100%100%100%100%100%100%100%100%100%100%100%100%100%100%100%100%100%100%100%100%
Air Temp Rise13°F (7.222°C)13°F (7.222°C)18°F (10°C)18°F (10°C)25°F (13.889°C)25°F (13.889°C)23°F (12.778°C)23°F (12.778°C)34°F (18.889°C)45°F (25°C)45°F (25°C)36°F (20°C)49°F (27.222°C)61°F (33.889°C)13°F (7.222°C)18°F (10°C)25°F (13.889°C)23°F (12.778°C)34°F (18.889°C)45°F (25°C)36°F (20°C)49°F (27.222°C)61°F (33.889°C)13°F (7.222°C)18°F (10°C)25°F (13.889°C)23°F (12.778°C)34°F (18.889°C)45°F (25°C)36°F (20°C)49°F (27.222°C)61°F (33.889°C)68°F (37.778°C)63°F (35°C)79°F (43.889°C)95°F (52.778°C)
Free Air Delivery CFM510 CFM510 CFM510 CFM510 CFM510 CFM510 CFM700 CFM700 CFM700 CFM700 CFM700 CFM1,300 CFM1,300 CFM1,300 CFM510 CFM510 CFM510 CFM700 CFM700 CFM700 CFM1,300 CFM1,300 CFM1,300 CFM510 CFM510 CFM510 CFM700 CFM700 CFM700 CFM1,400 CFM1,400 CFM1,400 CFM1,400 CFM2,000 CFM2,000 CFM2,000 CFM
Max CFM510 MBH510 MBH510 MBH510 MBH510 MBH510 MBH700 MBH700 MBH700 MBH700 MBH700 MBH1,300 MBH1,300 MBH1,300 MBH510 MBH510 MBH510 MBH700 MBH700 MBH700 MBH1,300 MBH1,300 MBH1,300 MBH510 MBH510 MBH510 MBH700 MBH700 MBH700 MBH1,400 MBH1,400 MBH1,400 MBH1,400 MBH2,000 MBH2,000 MBH2,000 MBH

Motors

Motor HP1/301/301/301/301/301/301/301/301/301/301/301/81/81/81/301/301/301/301/301/301/81/81/81/301/301/301/301/301/301/31/31/31/33/43/43/4
Motor RPM1,550 RPM1,550 RPM1,550 RPM1,550 RPM1,550 RPM1,550 RPM1,550 RPM1,550 RPM1,550 RPM1,550 RPM1,550 RPM1,550 RPM1,550 RPM1,550 RPM1,550 RPM1,550 RPM1,550 RPM1,550 RPM1,550 RPM1,550 RPM1,550 RPM1,550 RPM1,550 RPM1,550 RPM1,550 RPM1,550 RPM1,550 RPM1,550 RPM1,550 RPM1,725 RPM1,725 RPM1,725 RPM1,725 RPM1,140 RPM1,140 RPM1,140 RPM

Fuel

Fuel Type(s)ElectricityElectricityElectricityElectricityElectricityElectricityElectricityElectricityElectricityElectricityElectricityElectricityElectricityElectricityElectricityElectricityElectricityElectricityElectricityElectricityElectricityElectricityElectricityElectricityElectricityElectricityElectricityElectricityElectricityElectricityElectricityElectricityElectricityElectricityElectricityElectricity

Electrical

Voltage208V208V208V208V208V208V208V208V208V208V208V208V208V208V240V240V240V240V240V240V240V240V240V480V480V480V480V480V480V480V480V480V480V480V480V480V
Supply Voltage Phase13/113/113/113/13/1133/13/13/11111111113333333333333

Dimensions

Height12.12 " (307.848mm)12.12 " (307.848mm)12.12 " (307.848mm)12.12 " (307.848mm)12.12 " (307.848mm)12.12 " (307.848mm)12.12 " (307.848mm)12.12 " (307.848mm)12.12 " (307.848mm)12.12 " (307.848mm)12.12 " (307.848mm)17.5 " (444.5mm)17.5 " (444.5mm)17.5 " (444.5mm)12.12 " (307.848mm)12.12 " (307.848mm)12.12 " (307.848mm)12.12 " (307.848mm)12.12 " (307.848mm)12.12 " (307.848mm)17.5 " (444.5mm)17.5 " (444.5mm)17.5 " (444.5mm)12.12 " (307.848mm)12.12 " (307.848mm)12.12 " (307.848mm)12.12 " (307.848mm)12.12 " (307.848mm)12.12 " (307.848mm)17.5 " (444.5mm)17.5 " (444.5mm)17.5 " (444.5mm)17.5 " (444.5mm)23 " (584.2mm)23 " (584.2mm)23 " (584.2mm)
Width16.5 " (419.1mm)16.5 " (419.1mm)16.5 " (419.1mm)16.5 " (419.1mm)16.5 " (419.1mm)16.5 " (419.1mm)16.5 " (419.1mm)16.5 " (419.1mm)16.5 " (419.1mm)16.5 " (419.1mm)16.5 " (419.1mm)21.88 " (555.752mm)21.88 " (555.752mm)21.88 " (555.752mm)16.5 " (419.1mm)16.5 " (419.1mm)16.5 " (419.1mm)16.5 " (419.1mm)16.5 " (419.1mm)16.5 " (419.1mm)21.88 " (555.752mm)21.88 " (555.752mm)21.88 " (555.752mm)16.5 " (419.1mm)16.5 " (419.1mm)16.5 " (419.1mm)16.5 " (419.1mm)16.5 " (419.1mm)16.5 " (419.1mm)21.88 " (555.752mm)21.88 " (555.752mm)21.88 " (555.752mm)21.88 " (555.752mm)25.25 " (641.35mm)25.25 " (641.35mm)25.25 " (641.35mm)
Depth17 " (431.8mm)17 " (431.8mm)17 " (431.8mm)17 " (431.8mm)17 " (431.8mm)17 " (431.8mm)17 " (431.8mm)17 " (431.8mm)17 " (431.8mm)17 " (431.8mm)17 " (431.8mm)22.5 " (571.5mm)22.5 " (571.5mm)22.5 " (571.5mm)17 " (431.8mm)17 " (431.8mm)17 " (431.8mm)17 " (431.8mm)17 " (431.8mm)17 " (431.8mm)22.5 " (571.5mm)22.5 " (571.5mm)22.5 " (571.5mm)17 " (431.8mm)17 " (431.8mm)17 " (431.8mm)17 " (431.8mm)17 " (431.8mm)17 " (431.8mm)22.5 " (571.5mm)22.5 " (571.5mm)22.5 " (571.5mm)22.5 " (571.5mm)34.25 " (869.95mm)34.25 " (869.95mm)34.25 " (869.95mm)
Weight45 " (20.412kg)45 " (20.412kg)45 " (20.412kg)45 " (20.412kg)45 " (20.412kg)45 " (20.412kg)45 " (20.412kg)45 " (20.412kg)45 " (20.412kg)45 " (20.412kg)45 " (20.412kg)85 " (38.555kg)85 " (38.555kg)85 " (38.555kg)45 " (20.412kg)45 " (20.412kg)45 " (20.412kg)45 " (20.412kg)45 " (20.412kg)45 " (20.412kg)85 " (38.555kg)85 " (38.555kg)85 " (38.555kg)45 " (20.412kg)45 " (20.412kg)45 " (20.412kg)45 " (20.412kg)45 " (20.412kg)45 " (20.412kg)85 " (38.555kg)85 " (38.555kg)85 " (38.555kg)85 " (38.555kg)150 " (68.039kg)150 " (68.039kg)150 " (68.039kg)

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Markets

ZRO - Model ASE is quite versitile it can be installed in a variety of applications.

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