Hazloc SRH2-12 | Steam Rig Heater | Fan Diameter 12″

Hazloc SRH2 Heaters

Steam Rig Heater

Hazloc SRH2-12

The Hazloc SRH2-12 steam rig heater is an industrial grade heater specifically designed for steam applications on oil and gas drilling rigs where boiler neglect can lead to freeze-up conditions. The harsh operating conditions of these industries require equipment to be safe, reliable and dependable.

The Hazloc SRH2 series of heaters can prevent boiler failure or system neglect, which could result in an accidental freeze-up of a heating system. SRH2 heaters are simple to use and are designed to meet ASME requirements for steam applications with a maximum operating pressure up to 150 PSIG (1034 kPa).

Steam unit heaters condense steam rapidly, especially during warm-up periods. The return piping must be planned to keep the heat exchanger’s core free of condensate during periods of maximum heat output, and steam piping must be able to carry a full supply of steam to the unit heater to take the place of condensed steam. Adequate pipe size is especially important when a unit heater fan is operated under on-off control because the condensate rate fluctuates rapidly.

HAZLOC SRH2-12

Hazloc hazardous area heaters

SPECIFICATION

Fan diameter: 12 inches (304.8 mm)
Air delivery*: 1090 cfm (1852 m³/hr)
Air velocity (approximate): 1305 fpm (6.6 m/s)
Air throw* @ 15 psi steam: 45 ft (13.7 m)
Motor power: 1/4 hp (186 watts) or 1/3 hp (248 watts)
Rec. min mounting height: 7.5 ft (2.3 m)
Net weight (no options): 88 lbs (39.9 kg)
Shipping weight (no options): 138 lbs (62.6 kg)

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

General Specifications for SRH2-12 12” Fan Size Steam Rig Heater

1. Pressure/Temperature Ratings
Pressure = 150 psig (1034kPa)
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 aluminum

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 SRH2 Dimensions

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

Hazloc SRH2-12 Steam Rig Heater

Dimension	A	B	C	D	E	F	G	H	I	J	K	L	M
Inches (mm)	12.60 (320)	4.02 (102)	1.85 (47)	16.30 (414)	9.76 (248)	6.77 (172)	(2 holes)	2.64 (67)	19.07 (484)	11.02 (280)	1.38 (35)	19.86 (504)	22.49 (571)

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).