OPERATING INSTRUCTIONS
M3688 0701
OMEGA
SH SERIES
Air Heaters
MODEL NUMBERS
SH-73343
SH-73344
SH-73345
SH-73346
SH-73347
SH-73348
⇒ FOR SAFETY AND LONG HEATER LIFE, CAREFULLY READ THIS MANUAL BEFORE USE.
Description
Compact, safe and versatile heating unit for heating air or inert gas up to 1400°F. The SH-Series is available in
wattages from 6kW to 36kW, and can be use with compressed air or a regenerative blower. The SH heater is
designed for closed-loop temperature control, with a solid-state relay or phase angle fired SCR power control.
Sensors inside the heater sense both element temperature and inlet air temperature and limit heater voltage and
prevent element burnout if airflow is suddenly reduced. With this system, full power may safely be applied to the
system with zero airflow. If operated correctly, the heater element will operate continuously for 5000 hours or longer.
Specifications
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•
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•
•
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Max. Static Pressure: 10 PSI
Max. Exit Air Temp: 1400°F
Max. Inlet Air Temp:
Exit Connection:
Inlet Connection:
Control:
130°F
1-1/2" NPT
1-1/4” NPT
Closed Loop: 4-20mADC or Pulsed DC (3-32V, etc.)
Dual-Input Limit Card mounted on a 6” x 3.15” x 1.6” deep snap track.
Mount track to control cabinet using two #8 mounting screws, drilled 5.63” O.C.
Over-Temp Circuit:
System (Heater
+ Over-Temp)
SH-73343
kW
Max. Volts
Max. Amp
Draw
25.0
Replacement
Element P/N
SH-73351
SH-73352
SH-73353
SH-73354
SH-73355
SH-73356
6
6
10
10
18
36
240-1 phase
480-3 phase
240-1 phase
480-3 phase
480-3 phase
480-3 phase
SH-73344
SH-73345
SH-73346
SH-73347
7.2
41.7
12.0
21.7
SH-73348
43.4
Safety
!
!
!
SHOCK HAZARD Only qualified individuals should install this heater and related controls. Follow all applicable
electrical codes and use proper wiring.
WARNING! Sensors are at or near line voltage. Use teflon jacketed, teflon insulated “K” thermocouple wire
to connect heater sensors to the over-temperature board.
BURN/FIRE/EXPLOSION HAZARD Do not use with or near explosive or reactive gases. Avoid contact with the
side, or exposure to the exit-end, during or soon after operation. DO NOT USE NEAR VOLATILE OR
COMBUSTIBLE MATERIALS.
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OPERATING INSTRUCTIONS
OMEGA
S H -S eries M axim um P erform ance
(M easured by "K " therm ocouple located 1" from heater exit with 70°F
inlet air)
1600
1400
1200
1000
800
600
400
200
0
6 K W
10 K W
18 K W
36 K W
0
1000
2000
3000
4000
5000
6000
7000
8000
A ir Flow (S C FH )
N ote: True air tem perature is
approx. 100°F above lines indicated.
Therm ocouple readings tend to be low er due
to therm al m ass/heat sink effects.
Warranty
Omega warrants that all products to be delivered hereunder will be free from defects in material and
workmanship at the time of delivery. Omega's obligation under this warranty shall be limited to (at its option)
repairing, replacing, or granting a credit at the prices invoiced at the time of shipment for any of said products.
This warranty shall not apply to any such products which shall have been repaired or altered, except by
Omega, or which shall have been subjected. Omega shall be liable under this warranty only if (A)
Omega receives notice of the alleged defect within sixty (60) days after the date of shipment; (B) the
adjustment procedure hereinafter provided is followed, and (C) such products are, to Omega’s
satisfaction, determined to be defective.
THE WARRANTY SET FORTH IN THE PRECEDING PARAGRAPH IS EXCLUSIVE AND IN LIEU OF ALL OTHER
WARRANTIES, EXPRESS OR IMPLIED, INCLUDING, WITHOUT LIMITATION, ANY IMPLIED WARRANTY OF
FITNESS FOR A PARTICULAR PURPOSE OR OF MERCHANTABILITY.
The information contained in this manual is based on data considered to be true and accurate. Reasonable
precautions for accuracy has been taken in the preparation of this manual, however Omega assumes no
responsibility for any omissions or errors, nor assumes any liability for damages that may result from the use of the
product in accordance with the information contained in this manual.
Please direct all warranty/repair requests or inquiries with the following information,
in writing:
(A)
(B)
(C)
Order number under which products were shipped
Model/Serial Number of product
Reason for rejection
PRODUCTS CANNOT BE RETURNED AUTHORIZATION.
Replacement, repair, or credit for products found to be defective will be made by the place of purchase. All products
found to be not defective will be returned to the Buyer; transportation charges collect or stored at Buyers expense.
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OPERATING INSTRUCTIONS
OMEGA
WIRING DIAGRAM
MOUNTING DIMENSIONS
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