IUH SERIES Industrial Unit Heater
UNIT HEATERS
Product Overview
Image of the QMARK IUH Series Industrial Unit Heater, a beige, wall-mounted unit with louvers.
Technical Specifications
- Temp Range: 45°-90°F
- CFM: 270-1800
Ideal Spaces
- Factories
- Garages
- Stockrooms
- Stores
- Maintenance Rooms
- Warehouses
- Service Stations
- Workshops
- Stairwells
Color: Beige
Key Features
- All motors and contactor coils are 240V and operate on the secondary of a factory-installed step-down power transformer on 480V and 600V heaters, so a separate fan and motor control power source is not needed.
- Automatic fan delay eliminates cold drafts on start-up and discharges residual heat from the heater body during shut down.
- Steel fins are copper-brazed to low-watt density, steel-sheathed tubular heating elements.
- 5 and 7.5 kW models also come equipped with ceiling mounting bracket for horizontal or vertical flow mounting or any position in between.
- Uniform discharge of all heated air lowers internal operating temperatures and prolongs element life.
- Cabinet is finished with a polyester powder coating for excellent corrosion resistance.
- Element finished with aluminized paint for corrosion resistance.
- Fins and elements are arranged in a uniform grid pattern and fit closely into air discharge area to assure that all incoming air passes through heating element.
- High-limit cut-off automatically shuts off current in the event of overheating and reactivates unit when temperature returns to normal.
- Adjustable louvers provide directional heating to heat desired areas.
Certifications & Warranty
- [UL Certified]
- 5-Year Element Warranty
- 1-Year Workmanship Warranty
Models & Specifications
| CATALOG NO. | UPC | KW | BTU/HR. | VOLTAGE | PHASE | AMPERAGE | CFM | WEIGHT |
|---|---|---|---|---|---|---|---|---|
| JUH520 | 685360041964 | 5** | 17 | 208 | 1-3 | 12.5 | 270 | 26 lbs |
| IUH548 | 685360042022 | 5** | 17 | 480 | 1-3 | 6 | 270 | 31 lbs |
| IUH724 | 685360042091 | 7.5** | 25.6 | 240 | 1-3 | 18.1 | 270 | 27 lbs |
| IUH748 | 685360042121 | 7.5** | 25.6 | 480 | 1-3 | 9 | 270 | 31 lbs |
| IUH1020 | 685360041759 | 10 | 34.1 | 208 | 1-3 | 27.8 | 500 | 72 lbs |
| IUH1024 | 685360041766 | 10 | 34.1 | 240 | 1-3 | 25.7 | 500 | 62 lbs |
| IUH1048 | 685360041803 | 10 | 34.1 | 480 | 1-3 | 12.8 | 500 | 72 lbs |
| IUH1524 | 685360041841 | 15 | 51.2 | 240 | 1-3 | 37.7 | 750 | 68 lbs |
| IUH1548 | 685360041872 | 15 | 51.2 | 480 | 1-3 | 18.8 | 750 | 78 lbs |
| IUH2048 | 685360041902 | 20 | 68.2 | 480 | 1-3 | 24.8 | 1000 | 78 lbs |
| IUH3048 | 685360041940 | 30 | 102.2 | 480 | 3 | 36.9 | 1800 | 142 lbs |
| IUH524 | 685360041971 | 5** | 17 | 240 | 1-3 | 13.8 | 270 | 26 lbs |
| IUH2548 | 685360041926 | 25 | 85.2 | 480 | 3 | 31.1 | 1300 | 136 lbs |
| IUH560 | 685360042046 | 5** | 17 | 600 | 3 | 4.8 | 270 | 31 lbs |
| IUH760 | 685360042145 | 7.5** | 25.6 | 600 | 3 | 7.2 | 270 | 31 lbs |
| IUH1060 | 685360041827 | 10 | 34.1 | 600 | 3 | 9.6 | 500 | 72 lbs |
| IUH1560 | 685360041889 | 15 | 51.2 | 600 | 3 | 14.5 | 750 | 80 lbs |
| JUH2060 | 685360041919 | 20 | 68.2 | 600 | 3 | 19.3 | 1000 | 80 lbs |
| IUH2560 | 685360041933 | 25 | 85.2 | 600 | 3 | 24 | 1300 | 142 lbs |
| IUH3060 | 685360041957 | 30 | 102.2 | 600 | 3 | 28.9 | 1800 | 142 lbs |
SKU Legend: Popular Products; Extended Offering (Contact your local Marley Sales Representative for typically associated lead times)
**5 kW and 7.5 kW can be used in horizontal or vertical position. Heaters come equipped with ceiling mounting bracket for horizontal or vertical flow mounting or any position between.
Optional Accessories
| CATALOG NO. | UPC | DESCRIPTION | SHIP WT. |
|---|---|---|---|
| CWB1A | 685360018201 | Combination wall/ceiling bracket for 5KW thru 15KW units | 4 lbs |
| CWB2A | 685360152400 | Same as above but for 20KW thru 50KW units | 14 lbs |
| UHTA1 | 685360152431 | Single-Pole Thermostat kit 60-120°F temp. range for field installation in all units | 1 lbs |
| IUHDS30* | 685360019956 | 3-pole power disconnect switch kit for field installation on all horizontal unit heaters rated 24 amps or less. | 1 lbs |
| IUHDS63* | 685360019963 | 3-pole power disconnect switch kit for field installation on all horizontal unit heaters 10KW and above rated 24 to 50 amps. | 1 lbs |
| IUHSW | 685360036724 | Summer-Winter Fan Switch Kit. Field installed. Provides summer fan operation. | 1 lbs |
Dimensions and Clearances
| KW Size | A | B | C | D | E | F | G | H | J |
|---|---|---|---|---|---|---|---|---|---|
| 5-7.5 | 14" | 12 1/2" | 12 3/8" | 51½" | 13" | 1 3/4" | 1 3/8" | 1 1/2" | 1/2", 3/4" (2) 1" (3) |
| 10-20 | 18" | 17 1/2" | 9 15/32" | 16" * | 2" | 2 1/2" | 2 1/4" | 1 1/2" | 3/4", 1 1/4" (2) 1 1/2" (3) |
| 25-30 | 26" | 24" | 23 1/8" | 9 15/32" | 20" | 2" | 2 3/4" | 2 1/4" | 1", 1 1/2" (2) 2" (3) |
Diagram illustrating dimensions and clearances for IUH Series heaters, showing measurements A through J and clearance indicators (1), (2), (3) for side and front views.
*16 in. for 10-15 kW units; 16 in. for 20 kW unit. 5 kW and 7.5 kW can be used in horizontal or vertical position. Heaters come equipped with ceiling mounting bracket for horizontal or vertical flow mounting or any position between.
Customized Comfort
The IUH Series Horizontal/Downflow Unit Heater offers basic heating with options for mounting brackets and built-in thermostats for convenient, one-stop solutions. Both heaters feature adjustable louvers and flexible mounting for precise temperature control in cold areas, ensuring lasting warmth and comfort.
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