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ROOF Series Blowers

Series Overview

The Plastec R Series includes roof-mounted fans. Specifically, the product line consists of the ROOF series and ROOF XP series blowers. These blowers were developed and built for an intended use, though the specific intended use is not detailed in the provided sources. The sources do not specify the materials used, key benefits such as corrosion resistance, or the industries where this series is commonly used.

Models Available

The following models are available within the ROOF and ROOF XP series, with mechanical and electrical data provided in the sources:

Model Number Max. Flow (cfm) Min. Flow (cfm) Max. Static (in. Wg) Min. Static (in. Wg) Phase Power (hp) RPM Voltage (V) FLA Blower Weight (lbs) ØA (OD) ØF (OD)
ROOF 15                     5.78 4.91
R15SS6P025 200 11 0.28 0.1 Single 0.25 1120 115/208-230 4.16/2.26-2.08 41.45    
R15ST6P025 200 11 0.28 0.1 Three 0.25 1120 208-230/460 1.33-1.25/0.62 37.05    
R15SS4P033 310 11 0.63 0.1 Single 0.33 1720 115/208-230 3.49/1.88-1.74 37.49    
R15ST4P033 310 11 0.63 0.1 Three 0.33 1715 208-230/460 1.43-1.39/0.70 35.86    
R15CT4P033 310 11 0.63 0.1 Three 0.33 1700 575 0.53 35.86    
R15SS2P050 600 11 2.55 0.1 Single 0.5 3370 115/208-230 4.50/2.59-2.25 37.05    
R15ST2P050 600 11 2.55 0.1 Three 0.5 3470 208-230/460 1.68-1.57/0.78 36.476    
R15CT2P050 600 11 2.55 0.1 Three 0.5 3380 575 0.68 36.476    
ROOF 15 XP                     5.78 4.91
R15XS6P033 200 11 0.28 0.1 Single 0.33 1160 115/208-230 3.8/2.7 52.23    
R15XS4P033 310 11 0.63 0.1 Single 0.33 1760 115/208-230 4.6/2.3 50.03    
R15XT4P033 310 11 0.63 0.1 Three 0.33 1715 208-230/460        
ROOF 20                     7.94 6.29
R20SS6P025 610 30 0.63 0.15 Single 0.25 1120 115/208-230 4.16/2.26-2.08 43.14    
R20ST6P025 610 30 0.63 0.15 Three 0.25 1120 208-230/460 1.33-1.25/0.62 38.74    
ROOF 20 XP                     7.94 6.29
R20XS6P033 610 30 0.63 0.15 Single 0.33 1160 115/208-230 3.8/2.7 53.92    
R20XS4P033 910 30 1.44 0.15 Single 0.33 1760 115/208-230 4.6/2.3 51.72    
R20XT4P033 910 30 1.44 0.15 Three 0.33 1715 208-230/460 1.18/0.62 52.82    
R20XS2P100 765 30 5.8 0.15 Single 1 3450 115/208-230 9.3/5.3 57.22    
R20XT2P100 765 30 5.8 0.15 Three 1 3490 208-230/460 2.78/1.46 53.92    
R20XS2P150 1200 30 5.8 0.15 Single 1.5 3510 115/208-230 13.1/8.75 57.22    
R20XT2P150 1200 30 5.8 0.15 Three 1.5 3510 208-230/460 3.9/2.02 53.922    
R20CX2P150 1200 30 5.8 0.15 Three 1.5 3510 575 1.64 49.742    
ROOF 25                     9.04 7.86
R25SS6P025 1120 100 0.88 0.25 Single 0.25 1120 115/208-230 4.16/2.26-2.08 47.28    
R25ST6P025 1120 100 0.88 0.25 Three 0.25 1120 208-230/460 1.33-1.25/0.62 42.88    
ROOF 25 XP                     9.04 7.86
R25XS6P033 1120 100 0.88 0.25 Single 0.33 1160 115/208-230 3.8/2.7 58.06    
R25XS4P050 1700 100 2 0.25 Single 0.5 1720 115/208-230 5.9/2.9 54.76    
R25XT4P050 1700 100 2 0.25 Three 0.5 1720 208-230/460 1.64/0.89 56.96    
R25XS4P075 1700 100 2 0.25 Single 0.75 1740 115/208-230 7.2/4.3 59.16    
R25XT4P075 1700 100 2 0.25 Three 0.75 1730 208-230/460 2.35/1.29 59.16    
R25XT2P300 2100 100 8 0.25 Three 3 3520 208-230/460 7.5/4.19 73.46    
R25CX2P300 2100 100 8 0.25 Three 3 3490 575 2.94 64.438    
R25XT2P400 2100 100 8 0.25 Three 4 3520 208-230/460 10.2/5.3 99.858    
R25CX2P400 2100 100 8 0.25 Three 4 3490 575 3.96 69.278    
ROOF 30                     11.48 9.83
R30SS6P075 2200 270 1.36 0.3 Single 0.75 1140 115/208-230 7.05/4.04-3.89 61.97    
R30ST6P075 2200 270 1.36 0.3 Three 0.75 1130 208-230/460 3.86/2.23 60.43    
ROOF 30 XP                     11.48 9.83
R30XS6P075 2200 270 1.36 0.3 Single 0.75 1130 115/208-230 8.6/3.8 63.07    
R30XT6P075 2200 270 1.36 0.3 Three 0.75 1150 208-230/460 2.68/1.61 63.07    
ROOF 35                     14.66 12.38
R35ST8P200 3730 500 1.4 0.4 Three 2 870 208-230/460 7.59-7.23/3.61 157.30    
R35ST6P300 5000 500 2.4 0.4 Three 3 1175 208-230/460 9.16-8.94/4.47 174.24    
ROOF 35 XP                     14.66 12.38
R35XT6P300 5000 500 2.4 0.4 Three 3 1170 208-230/460 5.1/4.8 208.34    
R35XT4P1000 6400 500 5.45 0.4 Three 10 1770 208-230/460 26.8-25/12.5 281.42    
R35CX4P1000 6400 500 5.45 0.4 Three 10 1760 575 9.55 217.36    

The mechanical data sections list ØA (OD) and ØF (OD) dimensions for each fan size (ROOF 15, 20, 25, 30, 35). Optional Roof Curbs are available in 18in and 24in. These are roof-mounted fans, and the optional roof curb suggests roof mounting is a primary method. Other mounting options are not mentioned in the provided sources.

Performance and Dimensions

The performance of the R Series blowers is detailed in the specification sheets, varying by model, horsepower, and RPM. The models listed cover the following ranges:

  • Max Flow: from 200 cfm up to 6400 cfm
  • Min Flow: from 11 cfm up to 500 cfm
  • Max Static Pressure: from 0.28 in. Wg up to 8 in. Wg
  • Min Static Pressure: from 0.1 in. Wg up to 0.4 in. Wg

Performance curves (Static Pressure vs Air Flow) are provided for different standard RPM and frequency variations for each ROOF and ROOF XP size (15, 20, 25, 30, 35).

The dimensions provided in the mechanical data are ØA (OD) and ØF (OD). Specific overall physical dimensions of the blowers are not included in the provided sources.

Installation and Wiring

It is explicitly stated that you DO NOT INSTALL, USE OR OPERATE this equipment until the Installation, Operation, and Maintenance Manual has been read. Necessary safety precautions should be taken when handling the fan(s).

For installations involving explosion-resistant products, it is critical that ALL INSTALLATIONS MUST BE DONE BY QUALIFIED PERSONNEL WHO MEET THE REQUIRED CERTIFICATIONS. All such installations must also follow specific installation procedures.

Regarding wiring, after the blower is installed, it is a WARNING to ENSURE THAT MOTOR JUNCTION BOX LID IS COMPLETELY SEALED AND THAT ANY GASKET IS SEATED PROPERLY. FAILURE TO DO SO CAN RESULT IN EXHAUST GASES ENTERING THE MOTOR JUNCTION BOX. Furthermore, ENSURE THAT ALL CABLE GLANDS ARE SECURELY FASTENED TO THE MOTOR JUNCTION BOX AND THAT ALL SEALS ARE IN PLACE.

Standard power requirements vary by model and are listed as Single Phase or Three Phase, with various voltage options including 115/208-230V and 208-230/460V, and some models offering 575V.

A WARNING is given that Elprom motors are not frequency inverter duty certified.

Certifications and Compliance

The provided sources do not contain information regarding specific certifications such as AMCA or UL, nor do they mention compliance with regulatory standards like OSHA or other safety standards.

Discharge Configurations

The provided sources do not describe specific discharge configurations (such as upblast or horizontal) for the R Series fans.

Compatible Applications

The sources state that the ROOF series and ROOF XP series blowers were developed and built for their intended use, but they do not list specific compatible applications such as fume hood exhaust, chemical storage, or laboratory ventilation.