User Manual
 Omega II
® 
Installation, Operation & Service 
  Combustion Research Corporation 
INSTALLER 
PLEASE TAKE TIME TO READ AND UNDERSTAND THESE INSTRUCTIONS PRIOR TO 
ANY INSTALLATION. Contact your representative or the factory if you have any questions 
OWNER 
Retain this manual in a safe place to provide your 
serviceman with information if the situation arises. 
TABLE OF CONTENTS 
PAGE(S) 
Heater Safety & Burner Label Placement  1 & 2 
Warning Symbols  3 
Standards, Certifications and Codes  3 & 4 
Installer Qualifications & Responsibility  4 
Assembly – Tube and Reflectors  5 - 7 
Suspension Methods  8 
Combustion Tube Installation  9 
Reflector Mounting  9 
Customizing System  9 
Seismic Restraint Suspension  10 
Burner Connection & Installation  11 
Gas Supply  12 
Flexible gas Connector Installation  13 
Technical Data  14 
System Dimensions  15 
Clearance To Combustibles  16 & 17 
Side Shield Installation  18 
Combustion Air  19 & 20 
Venting  22 – 24 
Electrical Information  25 
Thermostat Wiring  27 
System Start-Up  28 & 29 
Sequence Of Operation  29 
Service & Maintenance  29 – 33 
Trouble Shooting Flow Chart  34 & 35 
Burner Parts List  36 & 37 
Accessories & Optional Equipment  38 – 40 
Warranty Statement and Terms and Conditions  41 & 42 
Sample Clearance To Combustible Warning Sign  43 
Omega II
®
 heating systems DO NOT qualify for use in explosion proof installations. 
Heaters SHALL NOT be used in living/sleeping areas. 
2016 COMBUSTION RESEARCH CORPORATION, INC. 
All rights reserved. No part of this work covered by the copyrights hereon in may be reproduced or copied in any 
form or by any means - graphic, electronic, or mechanical, including photocopying, recording, taping, or 
information storage and retrieval systems - without written permission of COMBUSTION RESEARCH 
CORPORATION, Inc. 










