HAZLOC Heater Systems
Manufacturer of Industrial Unit Heaters for hazardous and severe-duty locations
CRG Boiler Systems also offers the HAZLOC heaters configurations for rugged conditions and inclement weather locations. The HAZLOC line of heating applications delivers climate control solutions through heating systems for asset protection solutions and improved work environment conditions. CRG regards the HAZLOC line of heating applications as a "Tier One" product selection for meeting industry demands in the most of uncompromising elements.
Steam Rig Heater Series
The SRH series of heat-exchanger unit heaters is designed for steam applications on drilling rigs where boiler neglect can lead to freeze-up conditions. During an accidental freeze-up the SafeDeform™ core headers are designed to accommodate ice expansion. The SRH Series is designed for pressures up to 100 psi in single-pass configurations only. SRH heaters meet ASME requirements with a CRN.
Steam Rig Heater Series
The Steam Rig Heater (SRH) series of heat-exchanger unit heaters is specifically designed to meet the demanding requirements of the oil & gas well drilling industry. The harsh operating conditions of this industry require heating equipment that is safe, reliable, dependable, and available when you need it. The SRH series of heaters are built with you in mind, because we know that boiler failure or crew neglect could result in an accidental freeze-up of the heating system.
Simple, yet effective... with you in mind!
All Hazloc Heaters™ SRH models are designed to ASME requirements for steam applications with maximum operating pressures up to 100 PSIG (689 kPa). The five sizes of SRH heaters include our SafeDeform™ top and bottom core headers which are designed to deform to the increased volume, due to ice expansion, during freeze-up conditions. This feature allows SRH heaters to be frozen several times without critical damage which keeps your safety in mind. With our SafeDeform™ feature, multi-pass core configurations are not available.
Interchangeable with other brands of heaters!
Hazloc Heaters™ SRH series are designed with cabinet dimensions and mounting holes equivalent to a major competitor’s heaters making them easily interchangeable. Furthermore, Hazloc Heaters’ rugged and superior SRH SafeDeform™replacement cores are also designed to slide into equivalent sizes of their heaters. An added benefit is our 18-month heater warranty!
Maximum durability… rugged fin tubes!
All SRH SafeDeform™ heat-exchanger cores are constructed using rugged 16-gauge (0.065 in.) carbon-steel tubes with tension-wound aluminum fins and 12-gauge (0.105 in.) carbon-steel headers for maximum durability, resistance to corrosion, and longer life in your demanding applications.
• † Available in single-pass
configuration only due to SafeDeformTM design.
• * Other voltages and 3-phase motors available upon request.
• Longer lead times may apply. Contact factory.
• Motors are designed to be operated at rated voltage with tolerances of ± 15%.
• If ordering explosion-proof motor, ensure equipment meets the requirements of your hazardous area rating.
SRH Physical Dimensions
Heater Size |
12 | 16 | 20 | 24 | 30 |
Dim. |
Inches |
Inches |
Inches |
Inches |
Inches |
(mm) | (mm) | (mm) | (mm) | (mm) | |
A |
12.6 |
15.51 |
19.49 |
23.46 |
29.53 |
(320) | (394) | (495) | (596) | (750) | |
B |
4.02 |
4.02 |
4.02 |
4.65 |
5.71 |
(102) | (102) | (102) | (118) | (145) | |
C |
1.85 |
2.38 |
2.4 |
2.4 |
2.4 |
(47) | (60.5) | (61) | (61) | (61) | |
D |
16.3 |
20.28 |
24.29 |
28.27 |
34.33 |
(414) | (515) | (617) | (718) | (872) | |
E |
9.76 |
9.76 |
10.51 |
11.81 |
13.78 |
(248) | (248) | (267) | (300) | (350) | |
F |
6.77 |
5.77 |
5.75 |
6.69 |
7.48 |
(172) | (146.5) | (146) | (170) | (190) | |
G |
(2 holes) |
1.75 |
2.5 |
2.76 |
3.15 |
(44.5) | (63.5) | (70) | (80) | ||
H |
2.64 |
2.64 |
3.62 |
4.29 |
4.37 |
(67) | (67) | (92) | (109) | (111) | |
J |
11.02 |
15 |
17 |
19.69 |
25.59 |
(280) | (381) | (432) | (500) | (650) | |
K |
1.38 |
1.38 |
1.38 |
1.38 |
1.38 |
(35) | (35) | (35) | (35) | (35) | |
L |
21.65 |
21.65 |
22.83 |
24.21 |
27.36 |
(550) | (550) | (580) | (615) | (695) |
Steam Performance Tables
SRH1-12 @60 Hz | Entering Air Temperature |
||||||||||
PSIG |
°F |
Performance |
-10 | 0 | 10 | 20 | 30 | 40 | 50 | 60 | 70 |
10 | 239 | Output (103 btu/hr) |
77 | 74 | 70 | 66 | 63 | 59 | 56 | 53 | 49 |
Cond. (lbs/hr) |
81 | 77 | 73 | 69 | 66 | 62 | 59 | 55 | 52 | ||
FAT (°F) |
45.6 | 54.2 | 62.6 | 71.0 | 79.3 | 87.5 | 95.7 | 103.9 | 111.9 | ||
20 | 259 | Output (103 btu/hr) |
84 | 80 | 76 | 72 | 69 | 65 | 62 | 58 | 55 |
Cond. (lbs/hr) |
89 | 85 | 81 | 77 | 73 | 69 | 66 | 62 | 59 | ||
FAT (°F) |
50.2 | 58.8 | 67.3 | 75.8 | 84.1 | 92.2 | 100.4 | 108.6 | 116.8 | ||
40 | 287 | Output (103 btu/hr) |
92 | 88 | 85 | 81 | 77 | 74 | 70 | 67 | 63 |
Cond. (lbs/hr) |
100 | 96 | 92 | 88 | 84 | 80 | 76 | 72 | 69 | ||
FAT (°F) |
56.3 | 65.0 | 73.6 | 82.1 | 90.6 | 99.0 | 107.3 | 115.5 | 123.7 | ||
60 | 307 | Output (103 btu/hr) |
98 | 95 | 91 | 87 | 83 | 80 | 76 | 73 | 69 |
Cond. (lbs/hr) |
109 | 104 | 100 | 96 | 92 | 88 | 84 | 80 | 77 | ||
FAT (°F) |
61.0 | 69.7 | 78.4 | 87.0 | 95.5 | 103.9 | 112.3 | 120.6 | 128.9 | ||
80 | 324 | Output (103 btu/hr) |
104 | 100 | 96 | 92 | 89 | 85 | 82 | 78 | 75 |
Cond. (lbs/hr) |
116 | 112 | 108 | 103 | 99 | 95 | 91 | 87 | 83 | ||
FAT (°F) |
64.9 | 73.7 | 82.5 | 91.1 | 99.7 | 108.2 | 116.6 | 125.0 | 133.2 | ||
100 | 338 | Output (103 btu/hr) |
108 | 105 | 101 | 97 | 93 | 89 | 86 | 82 | 79 |
Cond. (lbs/hr) |
123 | 118 | 114 | 110 | 105 | 101 | 97 | 93 | 89 | ||
FAT (°F) |
68.1 | 76.9 | 85.7 | 94.4 | 103.0 | 111.6 | 120.0 | 128.4 | 136.7 |
SRH1-16 @60 Hz | Entering Air Temperature |
||||||||||
PSIG |
°F |
Performance |
-10 | 0 | 10 | 20 | 30 | 40 | 50 | 60 | 70 |
10 | 239 | Output (103 btu/hr) |
123 | 117 | 111 | 105 | 100 | 94 | 89 | 84 | 78 |
Cond. (lbs/hr) |
129 | 122 | 116 | 110 | 104 | 99 | 93 | 88 | 82 | ||
FAT (°F) |
48.5 | 56.9 | 65.3 | 73.5 | 81.7 | 89.8 | 98.0 | 106.0 | 113.9 | ||
20 | 259 | Output (103 btu/hr) |
132 | 126 | 121 | 115 | 109 | 104 | 98 | 93 | 87 |
Cond. (lbs/hr) |
141 | 134 | 128 | 122 | 116 | 110 | 104 | 99 | 93 | ||
FAT (°F) |
53.1 | 61.6 | 70.0 | 78.3 | 86.6 | 94.8 | 103.0 | 111.0 | 119.0 | ||
40 | 287 | Output (103 btu/hr) |
146 | 140 | 134 | 128 | 123 | 117 | 111 | 106 | 101 |
Cond. (lbs/hr) |
159 | 152 | 146 | 139 | 133 | 127 | 121 | 115 | 109 | ||
FAT (°F) |
59.8 | 68.3 | 76.9 | 85.3 | 93.6 | 101.9 | 110.1 | 118.3 | 126.4 | ||
60 | 307 | Output (103 btu/hr) |
157 | 151 | 144 | 138 | 133 | 127 | 121 | 116 | 110 |
Cond. (lbs/hr) |
173 | 166 | 159 | 153 | 146 | 140 | 134 | 128 | 121 | ||
FAT (°F) |
64.6 | 73.3 | 81.9 | 90.4 | 98.8 | 107.1 | 115.4 | 123.6 | 131.7 | ||
80 | 324 | Output (103 btu/hr) |
166 | 159 | 153 | 147 | 141 | 135 | 130 | 124 | 118 |
Cond. (lbs/hr) |
185 | 178 | 171 | 165 | 158 | 151 | 145 | 139 | 132 | ||
FAT (°F) |
68.9 | 77.6 | 86.2 | 94.8 | 103.2 | 111.6 | 119.9 | 128.2 | 136.3 | ||
100 | 338 | Output (103btu/hr) |
173 | 166 | 160 | 154 | 148 | 142 | 136 | 130 | 125 |
Cond. (lbs/hr) |
195 | 188 | 181 | 174 | 168 | 161 | 154 | 148 | 141 | ||
FAT (°F) |
72.2 | 81.0 | 89.6 | 98.2 | 106.7 | 115.1 | 123.5 | 131.8 | 140.0 |
Steam Performance Tables
SRH1-20 @60 Hz | Entering Air Temperature |
||||||||||
PSIG |
°F |
Performance |
-10 | 0 | 10 | 20 | 30 | 40 | 50 | 60 | 70 |
10 | 239 | Output (103 btu/hr) |
207 | 197 | 187 | 178 | 168 | 159 | 150 | 141 | 132 |
Cond. (lbs/hr) |
217 | 207 | 196 | 186 | 177 | 167 | 157 | 148 | 139 | ||
FAT (°F) |
44.3 | 52.9 | 61.2 | 69.7 | 78.1 | 86.4 | 94.6 | 102.8 | 110.9 | ||
20 | 259 | Output (103 btu/hr) |
227 | 217 | 207 | 197 | 187 | 178 | 168 | 159 | 150 |
Cond. (lbs/hr) |
241 | 230 | 220 | 209 | 199 | 189 | 179 | 169 | 159 | ||
FAT (°F) |
49.4 | 58.0 | 66.5 | 75.0 | 83.4 | 91.7 | 100 | 108.1 | 116.2 | ||
40 | 287 | Output (103 btu/hr) |
251 | 240 | 230 | 220 | 210 | 201 | 191 | 182 | 172 |
Cond. (lbs/hr) |
272 | 261 | 250 | 239 | 228 | 218 | 207 | 197 | 187 | ||
FAT (°F) |
55.7 | 64.4 | 73.0 | 81.5 | 90.0 | 98.4 | 106.7 | 115.0 | 123.2 | ||
60 | 307 | Output (103 btu/hr) |
269 | 258 | 248 | 237 | 227 | 218 | 208 | 198 | 189 |
Cond. (lbs/hr) |
296 | 285 | 273 | 262 | 251 | 240 | 229 | 219 | 208 | ||
FAT (°F) |
60.3 | 69.1 | 77.7 | 86.4 | 94.9 | 103.3 | 111.7 | 120.0 | 128.3 | ||
80 | 324 | Output (103 btu/hr) |
284 | 273 | 262 | 252 | 242 | 232 | 222 | 212 | 203 |
Cond. (lbs/hr) |
317 | 305 | 294 | 282 | 271 | 260 | 249 | 238 | 227 | ||
FAT (°F) |
64.3 | 73.1 | 81.8 | 90.4 | 99.0 | 107.5 | 115.9 | 124.3 | 132.6 | ||
100 | 338 | Output (103 btu/hr) |
296 | 285 | 274 | 264 | 254 | 243 | 234 | 224 | 214 |
Cond. (lbs/hr) |
335 | 323 | 311 | 299 | 287 | 276 | 265 | 254 | 243 | ||
FAT (°F) |
67.4 | 76.3 | 85.0 | 93.7 | 102.3 | 110.8 | 119.3 | 127.7 | 136.0 |
SRH1-24 @60 Hz | Entering Air Temperature |
||||||||||
PSIG |
°F |
Performance |
-10 | 0 | 10 | 20 | 30 | 40 | 50 | 60 | 70 |
10 | 239 | Output (103 btu/hr) |
426 | 403 | 383 | 362 | 342 | 323 | 304 | 286 | 267 |
Cond. (lbs/hr) |
446 | 422 | 401 | 379 | 359 | 338 | 319 | 299 | 280 | ||
FAT (°F) |
77.9 | 85.1 | 92.5 | 99.8 | 107.0 | 114.2 | 121.2 | 128.1 | 135.0 | ||
20 | 259 | Output (103 btu/hr) |
471 | 448 | 427 | 406 | 385 | 364 | 344 | 325 | 305 |
Cond. (lbs/hr) |
500 | 476 | 453 | 431 | 409 | 387 | 366 | 345 | 325 | ||
FAT (°F) |
87.2 | 94.7 | 102.1 | 109.4 | 116.6 | 123.7 | 130.6 | 137.5 | 144.3 | ||
40 | 287 | Output (103 btu/hr) |
521 | 498 | 476 | 454 | 433 | 412 | 392 | 372 | 352 |
Cond. (lbs/hr) |
565 | 540 | 516 | 493 | 470 | 447 | 425 | 403 | 382 | ||
FAT (°F) |
97.6 | 105.2 | 112.7 | 120.1 | 127.4 | 134.7 | 141.7 | 148.7 | 155.6 | ||
60 | 307 | Output (103 btu/hr) |
557 | 535 | 512 | 490 | 469 | 448 | 427 | 407 | 387 |
Cond. (lbs/hr) |
615 | 590 | 565 | 541 | 517 | 494 | 471 | 448 | 426 | ||
FAT (°F) |
105.3 | 113.0 | 120.6 | 128.1 | 135.5 | 142.8 | 149.9 | 157.0 | 163.9 | ||
80 | 324 | Output (103 btu/hr) |
589 | 566 | 543 | 521 | 499 | 477 | 456 | 436 | 415 |
Cond. (lbs/hr) |
659 | 633 | 608 | 583 | 558 | 534 | 510 | 487 | 465 | ||
FAT (°F) |
111.9 | 119.7 | 127.3 | 134.9 | 142.3 | 149.6 | 156.9 | 164.0 | 171.0 | ||
100 | 338 | Output (103 btu/hr) |
614 | 591 | 568 | 545 | 523 | 501 | 480 | 459 | 439 |
Cond. (lbs/hr) |
696 | 669 | 643 | 618 | 593 | 568 | 544 | 520 | 497 | ||
FAT (°F) |
117.1 | 124.9 | 132.7 | 140.3 | 147.8 | 155.1 | 162.4 | 169.6 | 176.7 |
SRH1-30 @60 Hz | Entering Air Temperature |
||||||||||
PSIG |
°F |
Performance |
-10 | 0 | 10 | 20 | 30 | 40 | 50 | 60 | 70 |
10 | 239 | Output (103 btu/hr) |
658 | 625 | 593 | 561 | 530 | 499 | 470 | 441 | 412 |
Cond. (lbs/hr) |
690 | 655 | 621 | 588 | 555 | 523 | 492 | 462 | 432 | ||
FAT (°F) |
84.0 | 91.2 | 98.4 | 105.4 | 112.4 | 119.2 | 126.1 | 132.7 | 139.3 | ||
20 | 259 | Output (103 btu/hr) |
711 | 678 | 644 | 612 | 580 | 549 | 520 | 490 | 461 |
Cond. (lbs/hr) |
755 | 719 | 684 | 650 | 617 | 584 | 552 | 520 | 490 | ||
FAT (°F) |
91.6 | 98.9 | 106.1 | 113.2 | 120.3 | 127.1 | 134.1 | 140.8 | 147.5 | ||
40 | 287 | Output (103 btu/hr) |
788 | 753 | 720 | 686 | 654 | 622 | 591 | 561 | 531 |
Cond. (lbs/hr) |
854 | 817 | 780 | 744 | 709 | 675 | 641 | 608 | 576 | ||
FAT (°F) |
102.4 | 109.9 | 117.2 | 124.5 | 131.7 | 138.7 | 145.6 | 152.5 | 159.3 | ||
60 | 307 | Output (103 btu/hr) |
844 | 809 | 775 | 741 | 708 | 676 | 644 | 613 | 583 |
Cond. (lbs/hr) |
931 | 892 | 854 | 817 | 781 | 745 | 710 | 676 | 643 | ||
FAT (°F) |
110.5 | 118.0 | 125.5 | 132.8 | 140.1 | 147.1 | 154.2 | 161.1 | 168.0 | ||
80 | 324 | Output (103 btu/hr) |
892 | 857 | 821 | 787 | 754 | 721 | 688 | 657 | 627 |
Cond. (lbs/hr) |
998 | 958 | 919 | 880 | 843 | 806 | 770 | 735 | 701 | ||
FAT (°F) |
117.4 | 125.0 | 132.5 | 139.9 | 147.1 | 154.3 | 161.4 | 168.4 | 175.3 | ||
100 | 338 | Output (103 btu/hr) |
930 | 894 | 859 | 824 | 790 | 757 | 725 | 693 | 661 |
Cond. (lbs/hr) |
1,054 | 1,013 | 973 | 933 | 895 | 857 | 821 | 785 | 749 | ||
FAT (°F) |
122.9 | 130.6 | 138.1 | 145.5 | 152.9 | 160.1 | 167.2 | 174.2 | 181.2 |
How to Order
When ordering please follow the “Model Code Sequence Required for Ordering” in SRH Model Coding to specify base model, motor voltage, phase, frequency and motor enclosure type. If ordering explosion-proof motors also specify motor hazardous location area rating required.
Example Model Code: SRH1-16-C-1-230160-E (suitable for Class I, Div.1, Group D, T3B)
Nomenclature
• 103 – 1000
• BTU – British Thermal Unit
• Cond. – Condensate Flow Rate
• FPM – Feet Per Minute
• FAT – Final Air Temperature
• PSIG – Pounds Per Square Inch Gauge Pressure
• CFM – Cubic Feet Per Minute
SRH Specifications by Model Size
Model | SRH1-12 |
SRH1-16 |
SRH1-20 |
SRH1-24 |
SRH1-30 |
|
Fan diameter | in. (mm) |
12 (304.8) |
16 (406.4) |
20 (508.0) |
24 (609.6) |
30 (762.0) |
Air delivery* | cfm (m3/hr) |
1090 (1852) |
1650 (2803) |
3000 (5097) |
3800 (6456) |
5500 (9344) |
Approx. air velocity* | fpm (m/s) |
1305 (6.6) |
1111 (5.6) |
1309 (6.6) |
1138 (5.8) |
1066 (5.4) |
Air throw* @ 15 psi steam | ft (m) |
45 (13.7) |
65 (19.8) |
70 (21.3) |
80 (24.4) |
85 (25.9) |
Motor power | hp (watts) |
¼ (186) |
¼ (186) |
½ (373) |
½ (373) |
1 (746) |
Rec. min. mounting height | ft (m) |
7.5 (2.3) |
7.5 (2.3) |
7.5 (2.3) |
7.5 (2.3) |
7.5 (2.3) |
Net weight | lbs (kg) |
78 (35.4) |
98 (44.4) |
132 (59.9) |
200 (90.7) |
257 (116.6) |
Approx. shipping weight | lbs (kg) |
138 (62.6) |
158 (71.7) |
207 (93.9) |
275 (124.7) |
347 (157.4) |
Approval |
CRN: 0H6664.2 - steam or fluids
(not for use with lethal fluids as defined by ASME, Section VIII, Div. 1,
A03, UW-2). |
Maximum pressure rating |
100 psig (689
kPa). |
Maximum design temperature |
550 °F (288°C). |
Cabinet material |
14-gauge (0.075
in.) (1.9 mm) steel. Yellow epoxy/polyester powder coated with five-stage
pretreatment, including iron phosphate. |
Louver blades |
Anodized
extruded aluminum. |
Fan |
Spark-proof
three-blade aluminum (except SRH1-30 which is two blade). |
Fan guard |
Split design
with close wire spacing. A 3/8 in. (9.5 mm) diameter probe will not enter. |
Motor type |
Thermally
protected CSA or UL Listed 1725 RPM permanently lubricated ball bearing type
with 56 frame. See page 3 for ordering requirements. |
Mounting holes |
5/8 in. - 11 UNC
– 4 holes at top of heater (2 holes, SRH1-12). |
Fluid connections |
2 in. NPT female
inlet and outlet. |
Header material |
Minimum 12 gauge
(0.105 in.) (2.7 mm) carbon steel conforming to ASME requirements. |
Finned tubes |
5/8 in. (15.9
mm) outside diameter [16-gauge, 0.065 in. (1.6 mm) wall thickness] carbon
steel tubes with 1-1/2 in. (38.1 mm) outside diameter copper-free, L-foot,
tension-wound aluminum fins @ 10 fins per in. |
Accessories – Mounting Brackets
WMB*
Wall Mounting Bracket For use in buildings that have substantial walls. The Z sections provide additional support where necessary.
BMB*
Basic Mounting Bracket For applications where the support arm can be bolted or welded directly to structural steel or concrete.
PMB*
Pipe Mounting Bracket
For buildings with insufficient strength to use other types of mounting brackets. Requires 3 in. pipe (3.5 in. O.D., min. Sch. 40, not supplied).
HMB
Hanging Mounting Bracket
Ideal and economical if adequate overhead structure exists. Requires 1/2 in. pipe, cut and threaded (min. Sch. 40 not supplied).
Note:
When ordering mounting brackets, please specify the type of bracket preferred and the basic model code of the heater to be mounted. Example, PMB-SRH1-16. Mounting kits are made of steel with a black enamel paint finish. Structural support of heater and bracket during transit is required.
Thermostats
ET5STS (SPST)
Line-Voltage Thermostat 22 Amps Resistive Load, 277 VAC Max 3/4 HP@125 VAC; 1-1/2 HP@ 250/277 VAC Ship wt - 0.6 lbs (0.28 kg)
TBX1 (SPDT)
Explosion-proof Thermostat -
Class I, Groups C&D, Class II, Groups E, F & G
Temperature range: 40°F to 80°F (5°C to 27°C),
3/4” - NPT conduit opening on top and bottom.
22 Amps Resistive Load, 277 VAC Max; 3/4 HP@125 VAC;
1-1/2 HP@ 250/277 VAC
Overall dimensions - 6.4 in (16.2 cm) W x 5.6 in (14.3 cm) H x 4.4 in (11.1 cm) D
Ship wt - 5.3 lbs (2.4 kg)
* Not suitable for model SRH1-30
Additional Products Available
HUH
The HUH series of heat-exchanger unit heaters is designed for steam, hot water, glycol or other fl uid circulating heating systems. Suitable for pressures and temperatures up to 400 psi and 550 °F respectively. Meets ASME requirements with a CRN.
HHP
The high performance series of heat-exchanger unit heaters is designed for steam, hot water, glycol or other fluid circulating heating systems. Suitable for pressures and temperatures up to 450 psi and 550 °F respectively. Meets ASME requirements with a CRN.
XEU1
The XEU1 series of explosion-proof electric air heaters are designed to meet U.S. and Canadian certification standards. The three sizes of XEU1 heaters are available in 27 model choices of voltage and heat output combinations to meet your specific requirements.
Limited 18-Month Warranty
Hazloc Heaters™ warrants all SRH series of explosion-proof electric heaters against defects in materials and workmanship under normal conditions of use for a period of eighteen
(18) months from date of purchase based on the following terms:
• 1. The heater must not be modified ed in any way.
• 2. The heater must be stored, installed and used only in accordance with the owner’s manual and attached data
plate information.
• 3. Replacement parts will be provided free of charge as necessary to restore any unit to normal operating
condition, provided that the defective parts be returned to us freight prepaid and that the replacement parts
be accepted freight collect.
• 4. The complete heater may be returned to our manufacturing plant for repair or replacement (at our discretion),
freight charges prepaid.
• 5. Contamination by dirt, dust, etc. or corrosion will not be considered as defects.
• 6. This warranty shall be limited to the actual equipment involved and, under no circumstances, shall include or
extend to installation or removal costs, or to consequential damages or losses.