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Chromalox Dragon Portable DRA Industrial Electric Blower Spot Comfort Heater

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Chromalox Electric Heaters and Controls
Mor Electric Heating is an authorized distributor for
Chromalox®

The Chromalox DRA is a rugged industrial grade, self contained, highly mobile, electric blower heater. The DRA can be left unattended without the threat of poisoning from combustion by-products associated with fuel fired heaters. The built in safety features include an adjustable thermostat to control the outlet air temperature, auto-reset cutouts for the fan motor and heating elements. The thermo-stat provides settings for full off, fan only and temperature control in the heating setting. Dragon heaters feature a large, easily accessible control and wiring compartment containing a magnetic contactor; additional safety is provided by a 120 volt control voltage transformer and motor starter on 480 and 600 volt units. The bright red polyester powder coated heating cylinder is highly visible and can be rotated to direct heat or fan driven air movement where it is needed. For assured safety, all standard units meet the requirements of UL (File No. E207486) and CSA (File No. LR40859).

Leg Assembly
Each side consists of a one piece, 12 gauge, formed steel member, which accepts a steel tubular handle, held in place with a 1 1/2" long x 1/4" bolt on each side. The handle can be raised from the shipping position if desired. The rubber, pneumatic wheels are 10" diameter and 3 1/2" wide to provide ease of transporting the heater on irregular and gravel surfaces. The large wheels make it easy to roll up stairways without damage to decorative step surfaces.

Heating Cylinder
A structural frame consisting of 2 spun steel rings and 2 formed steel channels support a 20 gauge steel cylinder phosphate coated for corrosion resistance, and finished in red polyester powder coat paint. The heating cylinder pivots vertically to direct air flow.

Safety Guards
Front and rear grills are 10 gauge finished in black polyester powder coat and are designed to meet OSHA safety requirements.

Heating Assembly
The patented metal sheath Fintube® heating elements consist of steel fins furnace brazed on industrial grade .475 diameter steel sheath tubular heaters for maximum heat transfer. The elements are held in place with steel bulkhead fittings for durability. The elements feature a high temperature finish for corrosive protection.

Fan Assembly
The self-centering fan assembly consists of a totally enclosed, permanently lubricated motor and a dynamically balanced aluminum fan blade for smooth, quiet operation.

Controls
A thermostat, with a temperature range of 40 °F to 100 °F is included, with a full off position, a fan only position and an adjustable range of temperature settings in the heating mode position. Each unit includes a 3 pole magnetic contactor and auto-reset thermal cutout. 480 volt and 600 volt units also include a motor relay and 120 volt control voltage transformer for personnel safety.

Applications

Advantages

Cord & Plug Selection Guide:

Power Cord based on 600V Hard Service Cord Rated 90C

Cubic Feet Heated In 2 Hours With One Heater:
Temperature Rise °F

Heater Output kW

7.5 9.75 15 20 30
10 35,000 45,500 70,000 93,330 140,000
20 17,500 22,750 35,000 46,650 69,980
30 11,667 15,170 23,340 31,110 46,670
40 8,750 11,375 17,500 23,330 35,000
50 7,000 9,100 14,000 18,670 28,000
60 5,830 7,580 11,660 15,550 23,300
70 5,000 6,500 10,000 13,335 20,000
80 4,375 5,690 8,755 11,675 17,500
90 3,890 5,060 7,785 10,380 15,600

Area heated assumes 15’ maximum ceiling height and with little or no outside exposure. No roof or floor with outside exposure; only one wall exposed with not over 15% door and window area.

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Delivery times:

For heaters with a stock status of S (Stock): Typically in 5-7 workdays or less plus allow additional time for your selected UPS or FedEx shipping method.

For heaters with a stock status of NS (Non Stock): These products are non-returnable. Typically ships in 25-27 workdays or less plus allow additional time for your selected UPS or FedEx shipping method.

Cable kits and Plug kits are (S) Stock

Price below does not include shipping cost which is calculated using your address before entering your credit card number.

Item Id Catalog No. kW Volts Phase Amps* BTU/H HP CFM Temp Rise  (°F) Stock Wt. (Lbs.) Click "Select" below to see our price and actual real-time quantity in stock
CHROM295523 DRA-07-83 7.5 208 1 and 3 36.3/21.0 25,590 0.06 1070 23 NS 65

Select

CHROM295531 DRA-07-23 7.5/5.6 240/208 1 and 3 31.5/18.3** 25,590 0.06 1070 23 S 65

Select

CHROM295540 DRA-10-83 9.75 208 1 and 3 47.1/27.3 33,267 0.06 1070 31 S 65

Select

CHROM295558 DRA-10-23 9.7/7.3 240/208 1 and 3 40.8/23.7** 33,267 0.06 1070 31 S 65

Select

CHROM295566 DRA-15-83 15 208 3 41.8 51,180 0.06 1070 46 NS 65

Select

CHROM295574 DRA-15-23 15/11.2 240/208 3 36.3** 51,180 0.06 1070 46 S 65

Select

CHROM295582 DRA-15-43 15 480 1 and 3 31.4/18.2 51,180 0.06 1070 46 S 65

Select

CHROM295596 DRA-15-93 15 600 1 and 3 25.2/14.6 51,180 0.06 1070 46 NS 65

Select

CHROM295603 DRA-20-23 19.5/15 240/208 3 47.1** 66,534 0.06 1070 61 S 75

Select

CHROM295611 DRA-20-43 20 480 1 and 3 42.0/24.4 68,240 0.06 1070 62 S 75

Select

CHROM295620 DRA-20-93 20 600 1 and 3 33.5/19.4 68,240 0.06 1070 62 NS 75

Select

CHROM295638 DRA-30-43 30 480 3 36.3 102,360 0.06 1070 92 S 75

Select

CHROM295646 DRA-30-93 30 600 3 29.1 102,360 0.06 1070 92 NS 75

Select

+ = Temperature rise at 240V operation
* = Includes motor amps
** = 208V amperage is 86% of 240V value
All units are factory wired for 3 phase operation. Models designated 1 and 3 phase can be field wired for single phase operation.

Plug Kits:


PGL-15-20

PGL-15-30

PGL-16-30

PGL-17-30

PGL-3763C

 

PGN-6-50

PGN-15-20

PGN-15-50
 
Item Id Catalog No. Plug Type Description Volts Amps NEMA# ANSI# Cable Dia Click "Select" below to see our price and actual real-time quantity in stock
CHROM338845 PGL-15-20 Locking 3 Pole, 4Wire 250 20 L15-20 C73.85 .385”-.780

Select

CHROM338853 PGL-15-30 Locking 3 Pole, 4 Wire 250 30 L15-30 C73.86 .385”-.780

Select

CHROM338861 PGL-16-30 Locking 3 Pole, 4 Wire 480 30 L16-30 C73.88 .595”-1.150

Select

CHROM338870 PGL-17-30 Locking 3 Pole, 4 Wire 600 30 L17-30 C73.89 .595”-1.150

Select

CHROM338917 PGL-3763C Locking 2 Pole, 3 Wire 600 50 - - .750”-1.125

Select

CHROM338888 PGN-6-50 Non Locking 2 Pole, 3 Wire 250 50 6-50 C73.53 .625”-1.187

Select

CHROM338896 PGN-15-20 Non Locking 3 Pole, 4 Wire 250 20 15-20 C73.59 .390”-.775

Select

CHROM338909 PGN-15-50 Non Locking 3 Pole, 4 Wire 250 50 15-50 C73.61 .750”-1.250

Select

The above plugs are designed to be used with specific ranges of cable diameters. If not used with Chromalox Cable Kits, check cable manufacturers cable diameter to be sure plug fits selected cable.

Cable Kits for Chromalox DRA Series Portable Blower Heaters

Cable packages include 25 feet Type SO cable, with either 3-conductors or 4-conductors, depending on the heater requirements. Each cable assembly includes the proper cord (connector). Plugs are not included. All models are factory wired for 3-phase, but can be field wired for single phase, select plug and cord accordingly.

Item ID Catalog No. Used on Heaters Size/Type Max. Amp Temperature
Ratings
NPT Click "Select" below to see our price and actual real-time quantity in stock
CHROM295427 PLC-2514-4 15kW 600V 3PH 14/4 SO 15 90 Deg.C 3/4”

Select

CHROM295435 PLC-2512-4 7.5kW 240V 3PH
15kW 480V 3PH
20kW 600V 3PH
12/4 SO 20 90 Deg.C 1”

Select

CHROM295443 PLC-2510-3 15kW 600V 1PH 10/3 SO 30 90 Deg.C 1”

Select

CHROM295451 PLC-2510-4 7.5kW 208V 3PH
9.75kW 240V 3PH
20kW 480V 3PH
10/4 SO 25 90 Deg.C 1”

Select

CHROM295460 PLC-2508-3 7.5kW 208V 1PH
7.5kW 240V 1PH
15kW 480V 1PH
20kW 600V 1PH
8/4 SO 35 90 Deg.C 1”

Select

CHROM295478 PLC-2508-4 9.75kW 208V 3PH
30kW 600V 3PH
8/4 SO 35 90 Deg.C 1”

Select

CHROM295486 PLC-2506-3 9.75kW 208V 1PH
9.75kW 240V 1PH
20kW 480V 1PH
6/3 SO 55 90 Deg.C 1”

Select

CHROM295494 PLC-2506-4 15kW 240V 3PH
30kW 480V 3PH
6/4 SO 45 90 Deg.C 1”

Select

CHROM295515 PLC-2504-4 19.5kW 240V 3PH 4/4 SO 60 90 Deg.C 1 1/4”

Select

SO = hard Service Cord, 600V Length = 25 Feet

Chromalox Installation, Operation and Renewal Parts Identification
Chromalox Product Information Sheet

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Chromalox® is a registered trademark.

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5880 Alpine Ave. NW - Comstock Park, MI 49321  USA
Tel 616-784-1121 - 800-442-2581 - Fax 616-784-7775
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