OPERATING INSTRUCTIONS OMEGA
M3688 0701
Pa ge
1
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
•
Max. Static Pressure: 10 PSI
•
Max. Exit Air Temp: 1400°F
•
Max. Inlet Air Temp: 130°F
•
Exit Connection: 1-1/2" NPT
•
Inlet Connection: 1-1/4” NPT
•
Control: Closed Loop: 4-20mADC or Pulsed DC (3-32V, etc.)
•
Over-Temp Circuit: 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.
System (Heater
+ Over-Temp)
kW
Max. Volts
Max. Amp
Draw
Replacement
Element P/N
SH-73343 6 240-1
phase 25.0 SH-73351
SH-73344 6 480-3
phase 7.2 SH-73352
SH-73345 10 240-1
phase 41.7 SH-73353
SH-73346 10 480-3
phase 12.0 SH-73354
SH-73347 18 480-3
phase 21.7 SH-73355
SH-73348 36 480-3
phase 43.4 SH-73356
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.
