Bryan Boilers Boiler CLM User Manual

CLM - Atmospheric Series  
“Compliance+” Ultra Low NOx Water or Steam Boilers  
Air Assisted Gas Fired – Sub 12 PPM  
Burner must be Ultra Low NOx type for reduced  
emissions service. Burner NOx reduction strategy  
shall reduce the production of NOx by controlling  
low excess air operation and reducing flame  
temperature. Optimum stoichiometry shall be  
maintained by a fuel metering control with  
adjustments through the modulating range  
assuring NOx reduction and high fuel efficiency.  
Please delete these paragraphs from  
the standard CLM Series Boiler Sample  
Specification:(Form 2137 or 2138)  
GAS BURNER AND CONTROL EQUIPMENT  
The gas burner assembly shall be an integral  
part of the boiler. Burners shall be tubular alloy  
steel atmospheric type for operation with natural  
draft, requiring no motor or blower. Gas pilot is  
to be electrically ignited.  
The special metal fiber burners are provided to  
assure the main flame is combusted properly on  
the burner head.  
The natural gas firing, NOx emissions will not  
exceed 12 ppm.  
The following trim and controls shall be  
furnished:  
1. Pilot cock  
2. Electronic pilot ignition  
All emissions measurements are to be corrected  
to 3% O2.  
3. Gas pilot safety shutoff valve  
4. Honeywell Flame Safeguard RM7890A  
5. Main manual gas shutoff valve  
6. Electric gas valve operator and auxiliary  
safety shutoff gas valve (CLM120 &  
CLM150)  
7. Motorized gas valve operator and auxiliary  
safety shutoff gas valve (CLM180 to  
CLM300)  
Control panel (16” x 20”) includes Honeywell  
RMT840L Flame Safe Guard with UV scanner  
Supply voltage 240-480/3/60 and includes a  
control circuit air assisted transformer  
Natural gas pressure required 20” min/28” max.  
The control will have a 5 to 1 turndown.  
8. High gas pressure switch (CLM270 to  
CLM300)  
9. Pilot and main gas pressure regulators  
And substitute these paragraphs:  
Ultra LOW NOX GAS BURNER AND  
CONTROL EQUIPMENT *  
The Bryan “Compliance +” boiler shall be  
furnished with a UL listed air assisted Ultra Low  
NOx – Gas burner suitable for operation with  
natural gas. Burner shall be complete with  
integral motor and blower for supplying sufficient  
combustion air with normal vent conditions.  
Form 2367  
 Rev 04/21/06   Repl New  
Page 1 of 1  
 

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