Hazloc HUH2-20 | Hydronic Unit Heater | Fan Diameter 20″

Hazloc HUH2

hydronic unit Heater

Hazloc huH2-20

Hazloc HUH2 hydronic unit heater is an industrial grade heater specifically designed to meet the harsh requirements of the oil and gas industry.

The Hazloc HUH2 range of heaters are safe, reliable and dependable to be used for applications within pulp & paper mills, power generation, mining, steel mills, foundries, water and wastewater treatment plants, chemical plants and hazardous material storage facilities.

Hazloc HUH2 industrial hydronic heaters are simple to use and are designed to ASME requirements for steam applications with maximum operating pressures up to 400 PSIG (2758 kPa).

HAZLOC huH2-20

Hazloc hazardous area heaters

SPECIFICATION

Fan diameter: 20 inches (508.0 mm)
Air delivery*: 3000 cfm (5097 m³/hr)
Air velocity (approximate): 1309 fpm (6.6 m/s)
Air throw* @ 15 psi steam: 70 ft (21.3 m)
Motor power: ½ hp (373 watts)
Rec. min mounting height: 7.5 ft (2.3 m)
Net weight (no options): 149 lbs (67.6 kg)
Shipping weight (no options): 207 lbs (93.9 kg)

* At 70°F (21°C), 60 Hz and sea level.

General Specifications for HUH2-20” Fan Size Hydronic Unit Heater

1. Pressure/Temperature Ratings
Pressure = 400 psig (2758kPa)
Temperature = 550°F (288°C)
MDMT = – 20° F (-29° C)

2. Heater Materials
Cabinet: 14 Ga, Yellow Epoxy/Polyester Powder Coated
Core: Carbon Steel with Copper-free Aluminium Fins
Louvres: Anodised Extruded Aluminium

3. Fluid Connections
2 in. FNPT
Optional Thread-on 2 in. MNPT (shipped loose)
Optional 2 in. FNPT CL300# flange (shipped loose)

4. Mounting
5/8 in. – 11 UNC diameter holes on top

5. Fan
Spark-proof three-blade aluminium

6. Fan Guard
Split design with close wire spacing. A 3/8 in.
(9.5 mm) diameter probe will not enter

7. Ex-Proof Motors
Class I, Divisions 1 & 2, Groups C & D
Class II, Divisions 1 & 2, Groups F & G
Temperature Code T3B

♦ See T Class Ratings | Hazardous Area Zones

NEMA motors are designed to be operated at rated voltage with tolerances of ± 10%. If the motor is marked 208-230V
the tolerance must be calculated from 230V. If motor is marked 230V it is still suitable for 208V operation but the tolerance must be calculated from 230V. For 3-phase motors the line-to-line full load voltage must be balanced within 1%. Standard Marathon NEMA ex-proof motor is suitable for hazardous area Class I & II, Div. 1 & 2, Groups C, D, F & G; T3B; Maximum ambient air temp of 40°C.

Hazloc HUH2 Dimensions

➡ Note: Inlet and outlet coupling connection locations can be reversed in the field by rotating the core.

Hazloc HUH2-20 Industrial Hydronic Heaters

Dimension	A	B	C	D	E	F	G	H	I	J	K	L	M
Inches (mm)	19.49 (495)	4.02 (102)	2.40 (61)	24.29 (617)	10.51 (267)	5.75 (146)	2.50 (63.5)	3.62 (92)	25.96 (659)	17.00 (432)	1.38 (35)	22.57 (573)	30.48 (774)

Hazloc heaters | HEATING APPLICATIONS

Hazloc Heaters are global suppliers and manufacturers of industrial and explosion-proof heaters and thermostats for hazardous areas and severe duty locations – this includes industrial heating products for non-hazardous and severe-duty applications. Explosion proof and hazardous area certifications include North American (NEC & CE), International (CENELEC & IEC), European (ATEX) and Russian EAEU (EAC EX).